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EP4422693A1 - Conjugués de trans-cyclooctène - Google Patents

Conjugués de trans-cyclooctène

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Publication number
EP4422693A1
EP4422693A1 EP22821794.9A EP22821794A EP4422693A1 EP 4422693 A1 EP4422693 A1 EP 4422693A1 EP 22821794 A EP22821794 A EP 22821794A EP 4422693 A1 EP4422693 A1 EP 4422693A1
Authority
EP
European Patent Office
Prior art keywords
alkylene
conjugate
alkyl
pharmaceutically acceptable
acceptable salt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22821794.9A
Other languages
German (de)
English (en)
Inventor
Jose Manuel Mejia ONETO
Michael ZAKHARIAN
Amir MAHMOODI
Jesse M. McFARLAND
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tambo Inc
Original Assignee
Tambo Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tambo Inc filed Critical Tambo Inc
Publication of EP4422693A1 publication Critical patent/EP4422693A1/fr
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
    • A61K47/50—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates
    • A61K47/51—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent
    • A61K47/54—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an organic compound
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00—Antineoplastic agents

Definitions

  • the present disclosure relates generally trans-cyclooctene conjugates for bioorthogonal delivery of a payload to a targeted location in a subject, which conjugates have applications, e.g., in the treatment of cancer, tumor growth, and immunotherapy.
  • BACKGROUND [0004] Bioorthogonal conjugation or click reactions are selective and orthogonal (non-interacting with) functionalities found in biological systems, and have found use in various applications in the fields of chemistry, chemical biology, molecular diagnostics, and medicine, where they can be used to facilitate the selective manipulation of molecules, cells, particles and surfaces, and the tagging and tracking of biomolecules in vitro and in vivo.
  • conjugates for use in bioorthogonal reactions which conjugates comprise a payload covalently bonded to one or more optionally substituted trans-cyclooctene moieties via a linker.
  • the payload is selected from an inhibitor of poly (ADP-ribose) polymerase (PARP), a duocarmycin, a pyrrolobenzodiazepine (PBD), hemiasterlin, HTI-286, and a monoclonal antibody, or a derivative, or analog thereof.
  • PARP ADP-ribose polymerase
  • PBD pyrrolobenzodiazepine
  • HTI-286 hemiasterlin
  • monoclonal antibody or a derivative, or analog thereof.
  • a method for delivering an effective amount of a payload i.e., an inhibitor of poly (ADP-ribose) polymerase (PARP inhibitor), a duocarmycin, a pyrrolobenzodiazepine (PBD), hemiasterlin, HTI-286, and a monoclonal antibody, or a derivative, or analog thereof
  • a payload i.e., an inhibitor of poly (ADP-ribose) polymerase (PARP inhibitor), a duocarmycin, a pyrrolobenzodiazepine (PBD), hemiasterlin, HTI-286, and a monoclonal antibody, or a derivative, or analog thereof
  • a method for treating cancer comprising administering to a subject in need thereof, a therapeutic support composition as described herein to a target location, and administering to the subject a conjugate, or the pharmaceutically acceptable salt or composition thereof, as described herein.
  • the cancer is metastatic.
  • the cancer is melanoma, renal cancer, prostate cancer, ovarian cancer, endometrial carcinoma, breast cancer, glioblastoma, lung cancer, soft tissue sarcoma, fibrosarcoma, osteosarcoma, pancreatic cancer, gastric carcinoma, squamous cell carcinoma of head/neck, anal/vulvar carcinoma, esophageal carcinoma, pancreatic adenocarcinoma, cervical carcinoma, hepatocellular carcinoma, kaposi's sarcoma, Non-Hodgkins lymphoma, Hodgkins lymphoma Wilm’s tumor/neuroblastoma, bladder cancer, thyroid adenocarcinoma, pancreatic neuroendocrine tumors, prostatic adenocarcinoma, nasopharyngeal carcinoma, or cutaneous T-cell lymphoma.
  • the cancer is a melanoma, renal cancer, prostate cancer, ovarian cancer, breast cancer, glioma, lung cancer, soft tissue carcinoma, soft tissue sarcoma, osteosarcoma, or pancreatic cancer.
  • the cancer is a solid tumor.
  • the cancer is a lymphoma or leukemia.
  • the cancer is a hematolical malignancy.
  • FIG.1 and Fig.2 show effect of the trans-cyclooctene conjugate of Example 20 in the absence or presence of tetrazine activator versus unmodified Gardiquimod on proliferation of fresh murine splenocytes.
  • concentrations up to 10 ⁇ g/mL are tested.
  • Fig.2 up to 50 ⁇ g/mL of conjugate with or without tetrazine is tested.
  • DETAILED DESCRIPTION [0011] The following description sets forth exemplary embodiments of the present technology. It should be recognized, however, that such description is not intended as a limitation on the scope of the present disclosure but is instead provided as a description of exemplary embodiments. 1.
  • the modifier “about” used in connection with a quantity is inclusive of the stated value and has the meaning dictated by the context (for example, it includes at least the degree of error associated with the measurement of the particular quantity).
  • the modifier “about” should also be considered as disclosing the range defined by the absolute values of the two endpoints.
  • the expression “from about 2 to about 4” also discloses the range “from 2 to 4.”
  • the term “about” may refer to plus or minus 10% of the indicated number.
  • “about 10%” may indicate a range of 9% to 11%, and “about 1” may mean from 0.9-1.1.
  • Other meanings of “about” may be apparent from the context, such as rounding off, so, for example “about 1” may also mean from 0.5 to 1.4.
  • the conjunctive term “or” includes any and all combinations of one or more listed elements associated by the conjunctive term.
  • the phrase “an apparatus comprising A or B” may refer to an apparatus including A where B is not present, an apparatus including B where A is not present, or an apparatus where both A and B are present.
  • the phrases “at least one of A, B, ... and N” or “at least one of A, B, ... N, or combinations thereof” are defined in the broadest sense to mean one or more elements selected from the group comprising A, B, ... and N, that is to say, any combination of one or more of the elements A, B, ...
  • alkoxy refers to an alkyl group, as defined herein, appended to the parent molecular moiety through an oxygen atom.
  • alkoxy include, but are not limited to, methoxy, ethoxy, propoxy, 2-propoxy, butoxy, and tert-butoxy.
  • alkyl as used herein, means a straight or branched, saturated hydrocarbon chain containing from 1 to 30 carbon atoms.
  • lower alkyl or “C 1 -C 6 -alkyl” means a straight or branched chain hydrocarbon containing from 1 to 6 carbon atoms.
  • C 1 -C 3 - alkyl means a straight or branched chain hydrocarbon containing from 1 to 3 carbon atoms.
  • alkyl include, but are not limited to, methyl, ethyl, n-propyl, iso-propyl, n-butyl, sec-butyl, iso-butyl, tert- butyl, n-pentyl, isopentyl, neopentyl, n-hexyl, 3-methylhexyl, 2,2-dimethylpentyl, 2,3-dimethylpentyl, n- heptyl, n-octyl, n-nonyl, and n-decyl.
  • alkenyl as used herein, means a hydrocarbon chain containing from 2 to 30 carbon atoms with at least one carbon-carbon double bond.
  • the alkenyl group may be substituted or unsubstituted.
  • the alkenyl group may be substituted with an aryl group, such as a phenyl.
  • alkynyl refers to straight or branched monovalent hydrocarbyl groups having from 2 to 30 carbon atoms, such as 2 to 20, or 2 to 10 carbon atoms and having at least 1 site of triple bond unsaturation.
  • alkyne also includes non-aromatic cycloalkyl groups of from 5 to 20 carbon atoms, such as from 5 to 10 carbon atoms, having single or multiple rings and having at least one triple bond.
  • alkynyl groups include, but are not limited to acetylenyl (-C ⁇ CH), and propargyl (-CH 2 C ⁇ CH), and cycloalkynyl moieties, such as, but not limited to, substituted or unsubstituted cyclooctyne moieties.
  • alkoxyalkyl refers to an alkoxy group, as defined herein, appended to the parent molecular moiety through an alkyl group, as defined herein.
  • alkylene refers to a divalent group derived from a straight or branched chain hydrocarbon of 1 to 30 carbon atoms, for example, of 2 to 10 carbon atoms.
  • alkylene include, but are not limited to, -CH 2 -, -CH(CH 3 )-, -C(CH 3 ) 2 -, -CH 2 CH 2 -, -CH(CH 3 )CH 2 -, -C(CH 3 ) 2 CH 2 -, -CH 2 CH 2 CH 2 -, -CH(CH 3 )CH 2 CH 2 -, -C(CH 3 ) 2 CH 2 CH 2 -, -CH 2 C(CH 3 ) 2 CH 2 -, -CH 2 CH 2 CH 2 CH 2 -, and –CH 2 CH 2 CH 2 CH 2 CH 2 -.
  • amino acid refers to both natural and unnatural amino acids, protected natural and unnatural amino acids, as well as amino acid analogs and amino acid mimetics that function in a manner similar to the naturally occurring amino acids.
  • Naturally encoded amino acids include 20 common amino acids (alanine, arginine, asparagine, aspartic acid, cysteine, glutamine, glutamic acid, glycine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, proline, serine, threonine, tryptophan, tyrosine and valine) and pyrrolidine and selenocysteine.
  • Amino acid analogs refer to compounds having the same basic chemical structure as a naturally occurring amino acid, i.e., by way of example only, an ⁇ -carbon attached to a hydrogen, carboxyl group, amino group, and R group. Such analogs can have a modified R group (e.g., norleucine as an example) or retain a modified peptide backbone while retaining the same basic chemical structure as a natural amino acid.
  • a modified R group e.g., norleucine as an example
  • Non-limiting examples of amino acid analogs include citrulline, homoserine, norleucine, methionine sulfoxide, methionine methylsulfonium, homophenylalanine, ornithine, formyl glycine, phenyl glycine, para-azidophenyl glycine, para- azidophenylalanine, para-acetophenylalanine, 4-(3-methyl-(1,2,4,5-tetrazine))-phenylglyine, and 4-(3- methyl-(1,2,4,5-tetrazine))-phenylalanine.
  • aryl refers to a phenyl group, or bicyclic aryl or tricyclic aryl fused ring systems.
  • Bicyclic fused ring systems are exemplified by a phenyl group appended to the parent molecular moiety and fused to a phenyl group.
  • Tricyclic fused ring systems are exemplified by a phenyl group appended to the parent molecular moiety and fused to two other phenyl groups.
  • Representative examples of bicyclic aryls include, but are not limited to, naphthyl.
  • tricyclic aryls include, but are not limited to, anthracenyl.
  • the monocyclic, bicyclic, and tricyclic aryls are connected to the parent molecular moiety through any carbon atom contained within the rings, and can be unsubstituted or substituted.
  • the term “azide” as used herein, refers to the functional group –N 3 .
  • the term “cycloalkyl” as used herein, refers to a carbocyclic ring system containing three to ten carbon atoms, zero heteroatoms and zero double bonds.
  • cycloalkyl include, but are not limited to, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, cyclononyl and cyclodecyl.
  • Cycloalkyl also includes carbocyclic ring systems in which a cycloalkyl group is appended to the parent molecular moiety and is fused to an aryl group as defined herein, a heteroaryl group as defined herein, or a heterocycle as defined herein.
  • cycloalkenyl as used herein, means a non-aromatic monocyclic or multicyclic ring system containing at least one carbon-carbon double bond and preferably having from 5-10 carbon atoms per ring.
  • exemplary monocyclic cycloalkenyl rings include cyclopentenyl, cyclohexenyl or cycloheptenyl.
  • cyclooctene refers to a substituted or unsubstituted non-aromatic cyclic alkyl group of 8 carbon atoms, having a single ring with a double bond.
  • cyclooctene groups include, but are not limited to, substituted or unsubstituted trans-cyclooctene (TCO).
  • TCO trans-cyclooctene
  • fluoroalkyl means an alkyl group, as defined herein, in which one, two, three, four, five, six, seven or eight hydrogen atoms are replaced by fluorine.
  • Representative examples of fluoroalkyl include, but are not limited to, 2-fluoroethyl, 2,2,2-trifluoroethyl, trifluoromethyl, difluoromethyl, pentafluoroethyl, and trifluoropropyl such as 3,3,3-trifluoropropyl.
  • alkoxyfluoroalkyl refers to an alkoxy group, as defined herein, appended to the parent molecular moiety through a fluoroalkyl group, as defined herein.
  • fluoroalkoxy means at least one fluoroalkyl group, as defined herein, is appended to the parent molecular moiety through an oxygen atom.
  • Representative examples of fluoroalkyloxy include, but are not limited to, difluoromethoxy, trifluoromethoxy and 2,2,2- trifluoroethoxy.
  • halogen or “halo” as used herein, means Cl, Br, I, or F.
  • haloalkyl as used herein, means an alkyl group, as defined herein, in which one, two, three, four, five, six, seven or eight hydrogen atoms are replaced by a halogen.
  • haloalkoxy as used herein, means at least one haloalkyl group, as defined herein, is appended to the parent molecular moiety through an oxygen atom.
  • heteroalkyl as used herein, means an alkyl group, as defined herein, in which one or more of the carbon atoms has been replaced by a heteroatom selected from S, Si, O, P and N. The heteroatom may be oxidized.
  • heteroalkyls include, but are not limited to, alkyl ethers, secondary and tertiary alkyl amines, and alkyl sulfides.
  • heteroaryl refers to an aromatic monocyclic ring or an aromatic bicyclic ring system or an aromatic tricyclic ring system.
  • the aromatic monocyclic rings are five or six membered rings containing at least one heteroatom independently selected from the group consisting of N, O and S (e.g.1, 2, 3, or 4 heteroatoms independently selected from O, S, and N).
  • the five membered aromatic monocyclic rings have two double bonds and the six membered six membered aromatic monocyclic rings have three double bonds.
  • the bicyclic heteroaryl groups are exemplified by a monocyclic heteroaryl ring appended to the parent molecular moiety and fused to a monocyclic cycloalkyl group, as defined herein, a monocyclic aryl group, as defined herein, a monocyclic heteroaryl group, as defined herein, or a monocyclic heterocycle, as defined herein.
  • the tricyclic heteroaryl groups are exemplified by a monocyclic heteroaryl ring appended to the parent molecular moiety and fused to two of a monocyclic cycloalkyl group, as defined herein, a monocyclic aryl group, as defined herein, a monocyclic heteroaryl group, as defined herein, or a monocyclic heterocycle, as defined herein.
  • monocyclic heteroaryl include, but are not limited to, pyridinyl (including pyridin-2-yl, pyridin-3-yl, pyridin-4-yl), pyrimidinyl, pyrazinyl, thienyl, furyl, thiazolyl, thiadiazolyl, isoxazolyl, pyrazolyl, and 2-oxo-1,2-dihydropyridinyl.
  • bicyclic heteroaryl include, but are not limited to, chromenyl, benzothienyl, benzodioxolyl, benzotriazolyl, quinolinyl, thienopyrrolyl, thienothienyl, imidazothiazolyl, benzothiazolyl, benzofuranyl, indolyl, quinolinyl, imidazopyridine, benzooxadiazolyl, and benzopyrazolyl.
  • tricyclic heteroaryl include, but are not limited to, dibenzofuranyl and dibenzothienyl.
  • the monocyclic, bicyclic, and tricyclic heteroaryls are connected to the parent molecular moiety through any carbon atom or any nitrogen atom contained within the rings, and can be unsubstituted or substituted.
  • heterocycle or “heterocyclic” as used herein, means a monocyclic heterocycle, a bicyclic heterocycle, or a tricyclic heterocycle.
  • the monocyclic heterocycle is a three-, four-, five-, six-, seven-, or eight-membered ring containing at least one heteroatom independently selected from the group consisting of O, N, and S.
  • the three- or four-membered ring contains zero or one double bond, and one heteroatom selected from the group consisting of O, N, and S.
  • the five-membered ring contains zero or one double bond and one, two or three heteroatoms selected from the group consisting of O, N and S.
  • the six-membered ring contains zero, one or two double bonds and one, two, or three heteroatoms selected from the group consisting of O, N, and S.
  • the seven- and eight-membered rings contains zero, one, two, or three double bonds and one, two, or three heteroatoms selected from the group consisting of O, N, and S.
  • monocyclic heterocycles include, but are not limited to, azetidinyl, azepanyl, aziridinyl, diazepanyl, 1,3-dioxanyl, 1,3-dioxolanyl, 1,3-dithiolanyl, 1,3-dithianyl, 1,3-dimethylpyrimidine-2,4(1H,3H)-dione, imidazolinyl, imidazolidinyl, isothiazolinyl, isothiazolidinyl, isoxazolinyl, isoxazolidinyl, morpholinyl, oxadiazolinyl, oxadiazolidinyl, oxazolinyl, oxazolidinyl, oxetanyl, piperazinyl, piperidinyl, pyranyl, pyrazolinyl, pyrazolidinyl, pyrrolinyl,
  • the bicyclic heterocycle is a monocyclic heterocycle fused to a phenyl group, or a monocyclic heterocycle fused to a monocyclic cycloalkyl, or a monocyclic heterocycle fused to a monocyclic cycloalkenyl, or a monocyclic heterocycle fused to a monocyclic heterocycle, or a spiro heterocycle group, or a bridged monocyclic heterocycle ring system in which two non-adjacent atoms of the ring are linked by an alkylene bridge of 1, 2, 3, or 4 carbon atoms, or an alkenylene bridge of two, three, or four carbon atoms.
  • bicyclic heterocycles include, but are not limited to, benzopyranyl, benzothiopyranyl, chromanyl, 2,3- dihydrobenzofuranyl, 2,3-dihydrobenzothienyl, 2,3-dihydroisoquinoline, 2-azaspiro[3.3]heptan-2-yl, azabicyclo[2.2.1]heptyl (including 2-azabicyclo[2.2.1]hept-2-yl), 2,3-dihydro-1H-indolyl, isoindolinyl, octahydrocyclopenta[c]pyrrolyl, octahydropyrrolopyridinyl, and tetrahydroisoquinolinyl.
  • Tricyclic heterocycles are exemplified by a bicyclic heterocycle fused to a phenyl group, or a bicyclic heterocycle fused to a monocyclic cycloalkyl, or a bicyclic heterocycle fused to a monocyclic cycloalkenyl, or a bicyclic heterocycle fused to a monocyclic heterocycle, or a bicyclic heterocycle in which two non- adjacent atoms of the bicyclic ring are linked by an alkylene bridge of 1, 2, 3, or 4 carbon atoms, or an alkenylene bridge of two, three, or four carbon atoms.
  • tricyclic heterocycles include, but are not limited to, octahydro-2,5-epoxypentalene, hexahydro-2H-2,5-methanocyclopenta[b]furan, hexahydro-1H-1,4-methanocyclopenta[c]furan, aza-adamantane (1-azatricyclo[3.3.1.1 3,7 ]decane), and oxa-adamantane (2-oxatricyclo[3.3.1.1 3,7 ]decane).
  • hydroxyl as used herein, means an —OH group.
  • hydroxyalkyl as used herein, means an alkyl group, as defined herein, in which one, two, three, four, five, six, seven or eight hydrogen atoms are replaced by a hydroxyl group.
  • the number of carbon atoms in a hydrocarbyl substituent is indicated by the prefix “C x -C y -” or “C x-y ,” wherein x is the minimum and y is the maximum number of carbon atoms in the substituent.
  • C 1 -C 3 -alkyl” and “C 1-3 alkyl” refer to an alkyl substituent containing from 1 to 3 carbon atoms.
  • the two conventions “C x -C y -” and “C x-y ” are used interchangeably and have the same meaning.
  • substituted refers to a group that may be further substituted with one or more non- hydrogen substituent groups.
  • tetrazine refers to a substituted or unsubstituted aromatic cyclic group of 2 carbon atoms and 4 nitrogen atoms, having a single ring with three double bonds.
  • tetrazine groups include 1,2,3,4-tetrazine and 1,2,4,5-tetrazine.
  • 1,2,4,5-tetrazine is referred to as a “Tz” group.
  • selective delivering refers to delivering an agent (e.g., a payload) to an organ or tissue (or portion thereof) in need of treatment or diagnosis, without significant binding to other non- target organs or tissues (or portions thereof).
  • the term “payload” refers to an agent for delivery to a target site in a subject. Payloads include therapeutic agents.
  • therapeutic agent refers to an agent capable of treating and/or ameliorating a condition or disease, or one or more symptoms thereof, in a subject. Therapeutic agents of the present disclosure also include prodrug forms of therapeutic agents.
  • diagnostic agent refers to agents that assist in diagnosing conditions or diseases. Representative diagnostic agents include imaging agents such as paramagnetic agents, optical probes, radionuclides, and the like. Paramagnetic agents are imaging agents that are magnetic under an externally applied field.
  • paramagnetic agents include, but are not limited to, iron particles including iron nanoparticles and iron microparticles.
  • Optical probes are fluorescent compounds that can be detected by excitation at one wavelength of radiation and detection at a second, different, wavelength of radiation.
  • Optical probes of the present disclosure include, but are not limited to, Cy5.5, Alexa 680, Cy5, DiD (1,1’-dioctadecyl-3,3,3’,3’-tetramethylindodicarbocyanine perchlorate) and DiR (1,1’- dioctadecyl-3,3,3’,3’-tetramethylindotricarbocyanine iodide).
  • Other optical probes include quantum dots.
  • Radionuclides are elements that undergo detectable radioactive decay. Radionuclides useful in embodiments of the present disclosure include, but are not limited to, 3 H, 11 C, 13 N, 18 F, 19 F, 60 Co, 64 Cu, 67 Cu, 68 Ga, 82 Rb, 89 Zr, 90 Sr, 90 Y, 99 Tc, 99m Tc, 111 In, 123 I, 124 I, 125 I, 129 I, 131 I, 137 Cs, 177 Lu, 186 Re, 188 Re, 211 At, Rn, Ra, Th, U, Pu, and 241 Am.
  • targeting agent refers to a chemical or biological agent that specifically binds to a target (e.g., a targeted organ or tissue), thereby forming a stable association between the targeting agent and the specific target.
  • a target e.g., a targeted organ or tissue
  • stably associated or “stable association” is meant that a moiety is bound to or otherwise associated with another moiety or structure under standard physiological conditions. Bonds may include covalent bonds and non-covalent interactions, such as, but not limited to, ionic bonds, hydrophobic interactions, hydrogen bonds, van der Waals forces (e.g., London dispersion forces), dipole- dipole interactions, and the like.
  • a targeting agent may be a member of a specific binding pair, such as, but are not limited to: a member of a receptor/ligand pair; a ligand-binding portion of a receptor; a member of an antibody/antigen pair; an antigen-binding fragment of an antibody; a hapten; a member of a lectin/carbohydrate pair; a member of an enzyme/substrate pair; biotin/avidin; biotin/streptavidin; digoxin/antidigoxin; a member of a DNA or RNA aptamer binding pair; a member of a peptide aptamer binding pair; and the like.
  • Targeting agents include ligands that specifically bind (or substantially specifically bind) a particular clinically-relevant target receptor or cell surface target.
  • the ligand can be an antibody, peptide, nucleic acid, phage, bacteria, virus, or other molecule with a specific affinity for a target receptor or cell surface target.
  • receptors and cell surface targets include, but are not limited to, PD-1, CTLA-4, HER2/neu, HER1/EGFR, VEGFR, 4-1BB, GITR, LT4 - human mAb directed against the inhibitory immune checkpoint receptor immunoglobulin-like transcript 4 (ILT4; leukocyte immunoglobulin-like receptor subfamily B member 2, LILRB2, lymphocyte immunoglobulin-like receptor 2, LIR2, monocyte/macrophage immunoglobulin-like receptor 10, MIR-10, CD85d, or other cellular receptors or cell surface targets. Additional examples are included in various embodiments disclosed herein. [0049]
  • the term “targeted organ or tissue” refers to an organ or tissue that is being targeted for delivery of the payload.
  • Representative organs and tissues for targeting include those that can be targeted by chemical or biological targeting agents, as well as those organs and tissues that cannot be targeted by chemical or biological targeting agents.
  • the term “implanting” refers to surgical implantation into a subject’s body.
  • the term “contacting” or “contact” refers to the process of bringing into contact at least two distinct species such that they can interact with each other, such as in a non-covalent or covalent binding interaction or binding reaction. It should be appreciated, however, the resulting complex or reaction product can be produced directly from an interaction or a reaction between the added reagents or from an intermediate from one or more of the added reagents or moieties, which can be produced in the contacting mixture.
  • binding agent refers to an agent having a functional group capable of forming a covalent bond to a complementary functional group of another binding agent in a biological environment. Binding between binding agents in a biological environment may also be referred to as bioconjugation. Binding agents include bioorthogonal binding agents, which are binding agents having bioorthogonal functional groups. Bioorthogonal functional groups of bioorthogonal binding agents selectively react with a complementary bioorthogonal functional group of another bioorthogonal binding partner. Selective reaction between bioorthogonal binding partners can minimize side reactions with other binding agents, biological compounds, or other non-complementary bioorthogonal binding agents or non- complementary bioorthogonal functional groups.
  • Bioorthogonal moieties or functional groups of bioorthogonal binding agents include, but are not limited to, an azide and alkyne for formation of a triazole via Click-chemistry reactions, trans-cyclooctene (TCO) and tetrazine (Tz) (e.g., 1,2,4,5- tetrazine), and others.
  • TCO trans-cyclooctene
  • Tz tetrazine
  • the binding agents useful in the present disclosure may have a high reactivity with the corresponding binding agent so that the reaction is rapid.
  • the term “functionalized” refers to a moiety having a functional group attached to the moiety, such as for example a moiety having a binding agent functional group (e.g., a bioorthogonal functional group) attached thereto.
  • administering refers to any suitable route of administration to a subject, such as, but not limited to, oral administration, administration as a suppository, topical contact, parenteral, intravenous, intraperitoneal, intramuscular, intralesional, intranasal or subcutaneous administration, intrathecal administration, or the implantation of a slow-release device e.g., a mini-osmotic pump, to the subject.
  • parenterally refers to modes of administration which include intravenous, intramuscular, intraperitoneal, intrasternal, subcutaneous and intraarticular injection and infusion.
  • the term “leaving group” refers to an atom (or a group of atoms) with electron withdrawing ability that can be displaced as a stable species, taking with it the bonding electrons.
  • suitable leaving groups include halides (e.g., Br, Cl, I), sulfonate esters (e.g., triflate, mesylate, tosylate, and brosylate), and nitrophenols.
  • pharmaceutically effective amount” and “therapeutically effective amount” refer to an amount of a compound sufficient to treat a specified disorder or disease or one or more of its symptoms and/or to prevent or reduce the risk of the occurrence or reoccurrence of the disease or disorder or symptom(s) thereof.
  • a pharmaceutically or therapeutically effective amount comprises an amount sufficient to, among other things, cause the tumor to shrink or decrease the growth rate of the tumor.
  • the term “subject,” “patient,” or “organism” includes humans and mammals (e.g., mice, rats, pigs, cats, dogs, and horses). Typical subjects to which an agent(s) of the present disclosure may be administered may include mammals, particularly primates, especially humans. For veterinary applications, suitable subjects may include, for example, livestock such as cattle, sheep, goats, cows, swine, and the like; poultry such as chickens, ducks, geese, turkeys, and the like; and domesticated animals particularly pets such as dogs and cats.
  • suitable subjects may include mammals, such as rodents (e.g., mice, rats, hamsters), rabbits, primates, and swine such as inbred pigs and the like.
  • the term “treating” or “treatment” as used herein means the treating or treatment of a disease or medical condition or symptom(s) thereof in a patient, such as a mammal (particularly a human) that includes: (a) ameliorating the disease or medical condition or symptom(s) thereof, such as, eliminating or causing regression of the disease or medical condition or symptom(s) thereof in a patient; (b) suppressing the disease or medical condition or symptom(s) thereof, for example by, slowing or arresting the development of the disease or medical condition or symptom(s) thereof in a patient; or (c) alleviating a symptom of the disease or medical condition or symptom(s) thereof in a patient.
  • physiological conditions is meant to encompass those conditions compatible with living cells, e.g., predominantly aqueous conditions of a temperature, pH, salinity, etc. that are compatible with living cells.
  • groups and substituents thereof may be selected in accordance with permitted valence of the atoms and the substituents, such that the selections and substitutions result in a stable compound, e.g., which does not spontaneously undergo transformation such as by rearrangement, cyclization, elimination, etc.
  • the compounds may exist as stereoisomers wherein asymmetric or chiral centers are present.
  • the stereoisomers are “R” or “S” depending on the configuration of substituents around the chiral carbon atom.
  • R and S used herein are configurations as defined in IUPAC 1974 Recommendations for Section E, Fundamental Stereochemistry, in Pure Appl. Chem., 1976, 45: 13-30.
  • Stereoisomers include enantiomers and diastereomers and mixtures of enantiomers or diastereomers.
  • Individual stereoisomers of the compounds may be prepared synthetically from commercially available starting materials, which contain asymmetric or chiral centers or by preparation of racemic mixtures followed by methods of resolution well-known to those of ordinary skill in the art.
  • the present disclosure also includes isotopically-labeled compounds, which are identical to those recited herein, but for the fact that one or more atoms are replaced by an atom having an atomic mass or mass number different from the atomic mass or mass number usually found in nature.
  • isotopes suitable for inclusion in the compounds of the invention are hydrogen, carbon, nitrogen, oxygen, phosphorus, sulfur, fluorine, and chlorine, such as, but not limited to, 2 H, 3 H, 13 C, 14 C, 15 N, 18 O, 17 O, 31 P, 32 P, 35 S, 18 F, and 36 Cl, respectively.
  • the compound may incorporate positron-emitting isotopes for medical imaging and positron-emitting tomography (PET) studies for determining the distribution of receptors.
  • positron-emitting isotopes that can be incorporated are 11 C, 13 N, 15 O, and 18 F.
  • Isotopically-labeled compounds disclosed herein can generally be prepared by conventional techniques known to those skilled in the art or by processes analogous to those described in the accompanying Examples using appropriate isotopically- labeled reagent in place of non-isotopically-labeled reagent.
  • B. Conjugates [0067] Provided herein are conjugates for use in bioorthogonal reactions.
  • a conjugate of Formula I or a pharmaceutically acceptable salt thereof: wherein: m is an integer from 1-150; G, at each occurrence, is independently an optionally substituted trans-cyclooctene moiety; D 1 is a payload selected from an inhibitor of poly (ADP-ribose) polymerase (PARP), a duocarmycin, a pyrrolobenzodiazepine (PBD), hemiasterlin, HTI-286, a monoclonal antibody, a topoisomerase inhibitor, lurbinectedin, MSA-2, gardiquimod, ciprofloxacin, mitomycin C, etoposide, and exatecan, or a derivative, or analog thereof; L 1 , at each occurrence, is independently a linker.
  • PARP poly (ADP-ribose) polymerase
  • PPD pyrrolobenzodiazepine
  • HTI-286 hemiasterlin
  • HTI-286 a monoclonal antibody
  • conjugates for use in bioorthogonal reactions.
  • a conjugate of Formula I or a pharmaceutically acceptable salt thereof: wherein m is an integer from 1-150; G, at each occurrence, is independently an optionally substituted trans-cyclooctene moiety; D 1 is a payload selected from an inhibitor of poly (ADP-ribose) polymerase (PARP), a duocarmycin, a pyrrolobenzodiazepine (PBD), hemiasterlin, HTI-286, and a monoclonal antibody, or a derivative, or analog thereof; L 1 , at each occurrence, is independently a linker.
  • PARP ADP-ribose
  • PBD pyrrolobenzodiazepine
  • L 1 at each occurrence, is independently a linker.
  • each trans-cyclooctene moiety is independently: wherein: R 1A , at each occurrence, is independently selected from the group consisting of C 1-4 alkyl, C 1-4 haloalkyl, and C 1-4 alkoxy; q is 0, 1, or 2; q1 is 0 or 1; R 1B , at each occurrence, is independently selected from the group consisting of G 1 , -OH, –NR 1c –C 1-4 alkylene–G 1 , –NR 1c –C 1-4 alkylene–N(R 1d ) 2 , –NR 1c –C 1-6 alkylene–N(C 1-4 alkyl) 3 + , –N(R 1c )CHR 1e CO 2 H, –N(R 1c )–C 1-6 alkylene–CO 2 H, –N(R 1f )–C 2-4 alkylene–(N(C 1-4 alkylene–
  • each trans-cyclooctene moiety (G) is independently: wherein: R 1A , at each occurrence, is independently selected from the group consisting of C 1-4 alkyl, C 1-4 haloalkyl, and C 1-4 alkoxy; q is 0, 1, or 2; q1 is 0 or 1; R 1B , at each occurrence, is independently selected from the group consisting of G 1 , -OH, –NR 1c –C 1-4 alkylene–G 1 , –NR 1c –C 1-4 alkylene–N(R 1d ) 2 , –NR 1c –C 1-6 alkylene–N(C 1-4 alkyl) 3 + , –N(R 1c )CHR 1e CO 2 H, –N(R 1c )–C 1-6 alkylene–CO 2 H, –N(R 1f )–C 2-4 alkylene–(N(C 1-4 alkyl
  • the trans-cyclooctene moiety (G) is 2 and R is -OH, 2- aminoethanesulfonic acid, an N-linked natural or unnatural amino acid, or an optionally substituted ethylenediamine; wherein R 2 may be optionally further substituted with a polyether.
  • the trans-cyclooctene moiety (G) is: .
  • the trans-cyclooctene moiety is: [0074] In some embodiments, the trans-cyclooctene moiety is ,. [0075] In some embodiments, the trans-cyclooctene moiety is .
  • the trans-cyclooctene moiety is [0077] In some embodiments, the trans-cyclooctene moiety is . [0078] In some embodiments, the trans-cyclooctene moiety is . [0079] In some embodiments, the trans-cyclooctene moiety is . [0080] In some embodiments, the trans-cyclooctene moiety is .
  • the trans-cyclooctene moiety is [0082] In some embodiments, the trans-cyclooctene moiety is [0083] In some embodiments, G–L 1 , at each occurrence, is independently , and R 2 is -OH, 2-aminoethanesulfonic acid, an N-linked natural or unnatural amino acid, or an optionally substituted ethylenediamine; wherein R 2 may be optionally further substituted with a polyether. [0084] In some embodiments, m is 1-20. In some embodiments, m is 1-10. In some embodiments, m is 1-5.
  • m is 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, or 1. In some embodiments, m is 1.
  • a pharmaceutical composition comprising the conjugate, or a pharmaceutically acceptable salt thereof, as disclosed herein and a pharmaceutically acceptable carrier.
  • payload is intended to refer to an inhibitor of poly (ADP-ribose) polymerase (PARP inhibitor), a duocarmycin, a pyrrolobenzodiazepine (PBD), hemiasterlin, HTI-286, and a monoclonal antibody, or a derivative, or analog thereof.
  • PARP inhibitor ADP-ribose
  • PBD pyrrolobenzodiazepine
  • HTI-286 hemiasterlin
  • monoclonal antibody or a derivative, or analog thereof.
  • the terms “derivative” or “analog” or “derived from” as used in reference to a payload means that one or more atoms, including hydrogen or non-hydrogen atoms, of the original, unmodified payload is replaced by a covalent bond to one or more linker L 1 .
  • the D 1 payloads are derived from the known payload and are modified to be covalently bonded to at least one optionally substituted trans-cyclooctene via a linker L 1 .
  • the D 1 payloads even after modification to arrive at the compounds described herein, maintain biological activity which is comparable to that observed in the original, unmodified payload.
  • the D 1 payloads exhibit a binding activity or inhibition which is at least about 98%, about 95%, about 90%, about 85%, about 80%, about 75%, about 70%, about 65%, about 60%, about 55%, or about 50% of that observed in the original, unmodified payload.
  • a hydrogen atom bound to a heteroatom e.g., N, O, or S
  • a halogen atom on a payload is replaced for attachment to the remainder of the compound.
  • a hydrogen atom on a payload is replaced for attachment to the remainder of the compound.
  • the hydrogen atom is on a heteroatom. In certain embodiments, the hydrogen atom is on a nitrogen. In certain embodiments, the hydrogen atom is on an oxygen. In certain embodiments, the hydrogen atom is on a carbon. [0089] In some embodiments, at least one payload is selected from an inhibitor of poly (ADP-ribose) polymerase (PARP), a duocarmycin, a pyrrolobenzodiazepine (PBD), hemiasterlin, HTI-286, an anti- CD3 ( ⁇ CD3) monoclonal antibody, lurbinectedin, MSA-2, gardiquimod, ciprofloxacin, paclitaxel, gemcitabine, mitomycin C, etoposide, exatecan, and MMAE, or a derivative, or analog thereof.
  • PARP poly (ADP-ribose) polymerase
  • PBD pyrrolobenzodiazepine
  • hemiasterlin HTI-286
  • HTI-286 an
  • At least one payload is selected from an inhibitor of poly (ADP-ribose) polymerase (PARP), a duocarmycin, a pyrrolobenzodiazepine (PBD), hemiasterlin, HTI-286, and an anti- CD3 ( ⁇ CD3) monoclonal antibody, or a derivative, or analog thereof.
  • PARP poly (ADP-ribose) polymerase
  • PPD pyrrolobenzodiazepine
  • hemiasterlin hemiasterlin
  • HTI-286 hemiasterlin
  • ⁇ CD3 anti- CD3
  • at least one payload is selected from lurbinectedin, MSA-2, gardiquimod, ciprofloxacin, paclitaxel, gemcitabine, mitomycin C, etoposide, exatecan, Seco-Duocarmycin SA, and MMAE, or a derivative, or analog thereof.
  • a monoclonal antibody for use herein as a payload can be an entire monoclonal antibody, or a fragment thereof (e.g., antigen-binding fragment (Fab)).
  • the antibody is an immune cell engager, and as such would induce or elicit an immune response.
  • the antibody, or fragment thereof targets one or more of CD3 (NCBI Gene ID 916), CD28 (NCBI Gene ID 940), CD137 (4-1BB) (NCBI Gene ID 3604), CD16 (NCBI Gene ID 2214), NKG2D (NCBI Gene ID 22914), CD64 (NCBI Gene ID 2209), GITR/TNFRSF18 (NCBI Gene ID 8487), CD25 (NCBI Gene ID 3559), CD40 (NCBI Gene ID 958), CD4 (NCBI Gene ID 920), CXCR4 (NCBI Gene ID 7852), G-CSFR (NCBI Gene ID 1441), GM-CSFR (NCBI Gene ID 1438), CD122 (NCBI Gene ID 3560), PD1 (NCBI Gene ID 5133), CTLA4 (NCBI Gene ID 1493), LAG3 (NCBI Gene ID 3902), TIGIT (NCBI Gene ID 201633), NCR1 (NCBI Gene ID 9437), TIM3 (NCBI Gene ID 84868), VISTA (NCBI Gene ID 916), CD28
  • the payload is an antibody or antibody fragment which targets CD3, such as OKT3, SP34, UCHT1, teplizumab, otelixizumab, visilizumab, or foralumab, or an antibody fragment derived therefrom.
  • the payload is an antibody or antibody fragment which targets CD28, such as theralizumab, TGN1412, or FR104, or an antibody fragment derived therefrom.
  • the payload is an antibody or antibody fragment which targets CD137 (4-1BB), such as utomilumab, urelumab, LVGN6051, or AGEN2373, or an antibody fragment derived therefrom.
  • the payload is an antibody or antibody fragment which targets CD16, such as AFM13, or an antibody fragment derived therefrom.
  • the payload is an antibody or antibody fragment which targets NKG2D, such as NNC0152-0002 or JNJ-64304500, or an antibody fragment derived therefrom.
  • the payload is an antibody or antibody fragment which targets CD64, such as H22, or an antibody fragment derived therefrom.
  • the payload is an antibody or antibody fragment which targets GITR/TNFRSF18, such as MK-4166, TRX518, MS-986156, AMG-228, or INCAGN01876, or an antibody fragment derived therefrom.
  • the payload is an antibody or antibody fragment which targets CD25, such as daclizumab, RG6292, basiliximab, or HuMax-TAC, or an antibody fragment derived therefrom.
  • the payload is an antibody or antibody fragment which targets CD40, such as iscalimab, ABBV-323, bleselumab (ASKP-1240), BI-655064, FFP-104, BMS986090, dacetuzumab, or lucatumumab, or an antibody fragment derived therefrom.
  • the payload is an antibody or antibody fragment which targets CD4, such as MAX.16H5, IT1208, zanolimumab (HuMax-CD4), UB-421, or MTRX1011A, or an antibody fragment derived therefrom.
  • CD4 such as MAX.16H5, IT1208, zanolimumab (HuMax-CD4), UB-421, or MTRX1011A, or an antibody fragment derived therefrom.
  • the payload is an antibody or antibody fragment which targets CXCR4, such as F50067, or an antibody fragment derived therefrom.
  • the payload is an antibody or antibody fragment which targets G-CSFR, such as CSL324, or an antibody fragment derived therefrom.
  • the payload is an antibody or antibody fragment which targets GM- CSFR, such as mdressimumab, or an antibody fragment derived therefrom.
  • the payload is an antibody or antibody fragment which targets CD122, such as Hu-Mik(beta)1, or an antibody fragment derived therefrom.
  • the payload is an antibody or antibody fragment which targets PD-1, such as CC-90006, cemiplimab, camrelizumab, or TSR-042, or an antibody fragment derived therefrom.
  • the payload is an antibody or antibody fragment which targets CTLA4, such as tremelimumab or ipilimumab, or an antibody fragment derived therefrom.
  • CTLA4 such as tremelimumab or ipilimumab
  • the payload is an antibody or antibody fragment which targets LAG3, such as relatlimab (BMS-986016), GSK2831781, cemiplimab (REGN3767), favezelimab, ieramilimab, or mavezelimab, or an antibody fragment derived therefrom.
  • the payload is an antibody or antibody fragment which targets TIGIT, such as BMS-986207, tiragolumab, vibostolimab, etigilimab, domvanalimab, ASP-8374, IBI939, BGB- A1217, COM902, or M6223, or an antibody fragment derived therefrom.
  • TIGIT such as BMS-986207, tiragolumab, vibostolimab, etigilimab, domvanalimab, ASP-8374, IBI939, BGB- A1217, COM902, or M6223, or an antibody fragment derived therefrom.
  • NCR1 such as hNKp46.02
  • the payload is an antibody or antibody fragment which targets TIM3, such as cobolimab, Sym023, LY3321367, BMS-986258, SHR-1702, dabatolimab, or INCAGN02390, or an antibody fragment derived therefrom.
  • the payload is an antibody or antibody fragment which targets VISTA, such as SG7, K01401-020, CI-8993, or JNJ-61610588, or an antibody fragment derived therefrom.
  • the payload is an antibody or antibody fragment which targets CD134, such as KHK4083 or ISB830, or an antibody fragment derived therefrom.
  • the payload is an antibody or antibody fragment which targets CD27, such as varlilumab, MK-5890, or CDX-527, or an antibody fragment derived therefrom.
  • the payload is an antibody or antibody fragment which targets CD40L, such as dapirolizumab, or an antibody fragment derived therefrom.
  • the payload is an antibody or antibody fragment which targets ICOS, such as MEDI-570, KY1044, JTX-2011, or GSK3359609, or an antibody fragment derived therefrom.
  • the payload is an antibody or antibody fragment which targets BAFFR, such as ianalumab, or an antibody fragment derived therefrom.
  • the payload is an antibody or antibody fragment which targets LFA-1, such as efalizumab, or an antibody fragment therefrom.
  • the payload is an antibody or antibody fragment which targets BTLA, such as icatolimab, or an antibody fragment derived therefrom.
  • a payload is an inhibitor of poly (ADP-ribose) polymerase (PARP), or a derivative, or analog thereof.
  • PARP poly (ADP-ribose) polymerase
  • the inhibitor of poly (ADP-ribose) polymerase is niraparib, talazoparib, olaparib, pamiparib, rucaparib, veliparib, iniparib, 3- aminobenzamide, CEP-9722, E7016, or a derivative, or analog thereof.
  • D 1 is: .
  • a payload is a duocarmycin, or a derivative, or analog thereof.
  • the duocarmycin is duocarmycin A, duocarmycin B1, duocarmycin B2, duocarmycin C1, duocarmycin C2, duocarmycin D, duocarmycin SA, CC-1065, adozelesin, carzelesin, bizelesin, or a derivative, or analog thereof.
  • D 1 is: [0125]
  • a payload is a pyrrolobenzodiazepine (PBD), or a derivative, or analog thereof.
  • the pyrrolobenzodiazepine (PBD) is [1,2]diazepino[3,4-e]indole, or a derivative, or analog thereof.
  • D 1 is:
  • a payload is an inhibitor of tubulin polymerization.
  • a payload is hemiasterlin, HTI-286, or a derivative, or analog thereof.
  • D 1 is derived from: .
  • D 1 is a topoisomerase inhibitor.
  • D 1 is camptothecin, or a derivative, or analog thereof.
  • D 1 is topotecan, irinotecan, silatecan, cositecan, exatecan, lurtotecan, gimatecan, belotecan, or rubitecan.
  • D 1 is [0131] In some embodiments, D 1 is [0132] In some embodiments, D 1 is [0133] In some embodiments, D 1 is [0134] In some embodiments, D 1 is [0135] In some embodiments, D 1 is [0136] In some embodiments, D 1 is [0137] In some embodiments, the payload comprises a polypeptide. In some embodiments, the polypeptide comprises one or more lysine, serine, threonine, or tyrosine residues. In some embodiments, the linker L 1 is covalently bonded to a lysine, serine, threonine, or tyrosine residue present on the payload.
  • the polypeptide comprises one or more lysine residues.
  • the linker L 1 is covalently bonded to a lysine residue present on the payload.
  • the payload comprises an N-terminal amino acid, wherein the linker L 1 is covalently bonded to a N-terminal amino acid.
  • m is 1-20.
  • linker L 1 may be a bond.
  • linker L 1 may have 1 to 100 linking atoms, and may include ethylene-oxy groups, amines, esters, amides, carbamates, carbonates, and ketone functional groups.
  • linkers may have from 1 to 50 linking atoms, or from 5 to 50 linking atoms, or from 10 to 50 linking atoms, or from 1 to 40 linking atoms, or from 1 to 30 linking atoms, or from 1 to 20 linking atoms, or from 1 to 10 linking atoms, or from 1 to 5 linking atoms, or from 5 to 30 linking atoms, or from 10 to 30 linking atoms, or from 5 to 40 linking atoms, or from 5 to 50 linking atoms, or from 10 to 50 linking atoms.
  • the linker L 1 in Formula I may comprise one or more (e.g., 1-10 or 1-5) chain heteroatoms (e.g., O, N, S) and one or more (e.g., 1-10 or 1-5) alkylene, alkenylene, alkynylene, arylene, heteroarylene, cycloalkylene or heterocycloalkylene moieties; wherein each alkylene, alkenylene, alkynylene, arylene, heteroarylene, cycloalkylene or heterocycloalkylene moiety, may be independently optionally substituted with one to five substituents independently selected from oxo, halo, C 1-4 alkyl, C 1-4 alkoxy, and C 1-4 haloalkyl.
  • chain heteroatoms e.g., O, N, S
  • alkylene, alkenylene, alkynylene, arylene, heteroarylene, cycloalkylene or heterocycloalkylene moieties wherein each alkylene, al
  • the linker L 1 is not a bond. In some embodiments, L 1 is a cleavable linker. In some embodiments, L 1 is a non-cleavable linker.
  • each R 110 is independently hydrogen, C 1-4 alkyl, C 1-4 haloalkyl, aryl, heteroaryl, cycloalkyl or heterocyclyl; and each R 120 is independently hydrogen, C 1-4 alkyl, C 1-4 haloalkyl, aryl, heteroaryl, cycloalkyl or heterocyclyl.
  • Representative linkers include, but are not limited to, those shown below: .
  • linkers include, but are not limited to, those shown below: .
  • the linker in Formula I may comprise one or more of polyethylene glycol (e.g., PEG having an average molecular weight of from 300 g/mol to 10,000 g/mol), ethylene-1,2-diylbis(methylcarbamate, an arylene (e.e., phenylene), ethylene-oxy, amine, ester, amide, carbamate, ketone (i.e., formyl), or carbonate.
  • the linker in Formula I may comprise .
  • the linker L 1 may comprise one or more natural or unnatural amino acids, which may be referred to as a peptide linker.
  • the linker may be bound thereto using a peptide linker made up of a carboxylic acyl unit, and one or more amino acids making up a protein or peptide sequence.
  • the linker may also contain a self-immolating spacer which spaces the drug and the protein peptide sequence.
  • the linker L 1 may be a peptide linker represented by “A—Y—Z—X—W” in which “A” is the carboxylic acyl unit, “Y” and “Z” are each one or more natural or unnatural amino acids and together form a peptide sequence, and “X” and “W” are optional additional linkers having from 1 to 50 linking atoms, or from 5 to 10 linking atoms, or from 1 to 10 linking atoms which spaces the peptide and the drug, D 1 , or the bioorthogonal moiety.
  • one or more of the amino acids in the peptide linker is N-methylated.
  • Y may be at least one amino acid selected from the group consisting of alanine, valine, leucine, isoleucine, methionine, phenylalanine, tryptophan and proline. In some embodiments, Y may be at least one amino acid selected from the group consisting of phenylalanine, alanine, and valine.
  • Z may be at least one amino acid selected from the group consisting of alanine, lysine, lysine protected with acetyl or formyl, arginine, arginine protected with tosyl or nitro groups, histidine, ornithine, ornithine protected with acetyl or formyl, and citrulline.
  • Z may be at least one amino acid selected from the group consisting of alanine, lysine and citrulline.
  • Y-Z combinations include Valine-Citrulline; Valine-Alanine; and Alanine-Alanine.
  • A is -OC(O)-.
  • X is -OC(O)-.
  • W is -OC(O)-.
  • X is absent and W is -OC(O)-.
  • —X—W is [0158] In certain embodiments, —X—W is [0159]
  • the peptide linker is specifically tailored so that it will be selectively cleaved (e.g., enzymatically cleaved) releasing the drug, such as by one or more of the tumor-associated proteases.
  • the peptide linker has a chain length of two to four amino acid residues (i.e., a di-, tri-, or tetra-peptide). It will be understood, however, that peptide linkers up to five, six, seven, or eight amino acid residues may also suitably be employed.
  • the peptide linker is Phe-Lys, Val-Lys, Val-Ala, Ala-Ala, Phe-Phe-Lys, D-Phe-Phe-Lys, Gly-Phe-Lys, Ala-Lys, Val-Cit, Phe-Cit, Leu-Cit, Ile-Cit, Trp-Cit, Phe-Ala, Gly-Phe- Leu-Gly [SEQ ID NO: 1], Ala-Leu-Ala-Leu [SEQ ID NO:2], Phe-N 9 -tosyl-Arg, or Phe-N 9 -Nitro-Arg.
  • the peptide linker is Phe-Lys, Val-Lys, Val-Ala, Ala-Ala, Val-Val, Val-Cit, or D- Phe-L-Phe-Lys. In certain embodiments, the peptide linker is Val-Cit, Val-Ala, or Ala-Ala. [0162] In certain embodiments, the linker L 1 in Formula I is: (e.g., [0163] The foregoing linkers may attach on the right-hand side to amino acid side chains of D 1 such lysine or cysteine (e.g., ).
  • L 1 is –OC(O)L 4 – or –OC 1-6 alkyleneC(O)L 4 –;
  • L 4 is a bond, –N(R 12 )–C 2-3 alkylene–N(R 13 )C(O)–, —CH(NHC(O)R 14 )C 1-4 alkylene–S–S–C 1-4 alkylene– OC(O)–, —NHNHC(O)CH(NHC(O)R 15 )CH 2 C(O)–, –C 1-6 alkylene–CH(G x )OC(O)–,
  • R 12 , R 13 , R 14 , R 15 , and R 19 are each independently hydrogen or C 1-4 alkyl;
  • R 16 is hydrogen, C 1-4 alkyl, –C 1-4 alkylene–OH, –C 1-4 alkylene–OC 1-4 alkyl, –C 1-4 alkylene–CO 2 H, or –C1- 4alkylene–
  • G–L 1 at each occurrence, is independently , .
  • G–L 1 at each occurrence, is independently When attached to polypeptide a lysine residue, the conjugate may have formula wherein PPM is a polypeptide moiety having the lysine residue and lysine side chain and the PPM may also have additional lysines, or other amino acid side chains conjugated to the group [0167]
  • R 1B is selected from the group consisting of G 1 , OH, –NR 1c –C 1-4 alkylene–G 1 , –NR 1c –C 1-4 alkylene–N(R 1d ) 2 , –N(R 1c )CHR 1e CO 2 H, –N(R 1c )CH 2 CO 2 H, and –N(R 1f )–CH 2 CH 2 –(N(CH 2 CO 2 H)CH 2 CH 2 ) n –
  • R 1B is selected from the group consisting of –NR 1c –C 2-4 alkylene– N(C 1-4 alkyl) 3 + , –N(R 1c )–C 1-6 alkylene–SO 3 H, –N(R 1c )–(CH 2 CH 2 O) 1-3 –CH 2 CH 2 N((CH 2 CH 2 O) 1-3 –C 1-6 alkylene–CO 2 H) 2 , and –N(R 1c )–CH(CH 2 O–(CH 2 CH 2 O) 0-2 –C 1-6 alkylene–CO 2 H) 2 .
  • R 1B is selected from the group consisting of –NR 1c –CH 2 CH 2 –N(CH 3 ) 3 + , –N(R 1c )–CH 2 CH 2 –SO 3 H, –N(R 1c )–(CH 2 CH 2 O) 3 –CH 2 CH 2 N((CH 2 CH 2 O) 3 –CH 2 CH 2 –CO 2 H) 2 , and –N(R 1c )–CH(CH 2 O–CH 2 CH 2 –CO 2 H) 2 .
  • R 1A is C 1-4 alkyl.
  • R 1A is CH 3 .
  • R 1c is hydrogen.
  • R 1A is C 1-4 alkyl
  • R 1B is selected from the group consisting of G 1 , OH, -NR 1c -C 1-4 alkylene-G 1 , –NR 1c –C 1-4 alkylene–N(R 1d ) 2 , -N(R 1c )CHR 1e CO 2 H, -N(R 1c )CH 2 CO 2 H, and -N(R 1f )–CH 2 CH 2 -(N(CH 2 CO 2 H)CH 2 CH 2 ) n - N(CH 2 CO 2 H) 2 ;
  • R 1e is –C 1-4 alkylene–CO 2 H;
  • R 1f is hydrogen or C 1-4 alkylene–CO 2 H;
  • G 1 is a 4- to 8-membered monocyclic heterocyclyl containing a first nitrogen and optionally one additional heteroatom selected from nitrogen, oxygen, and sulfur, G 1 being attached at the
  • R 1A is CH 3 ;
  • R 1e is –CH 2 CO 2 H;
  • R 1f is hydrogen or CH 2 CO 2 H;
  • G 1 is a piperazinyl, morpholinyl, piperidinyl, azepanyl, or pyrrolidinyl, attached through a ring nitrogen atom and optionally substituted with 1-4 substituents independently selected from the group consisting of C 1-4 alkyl, C 1-4 haloalkyl, halo, cyano, OH, –OC 1-4 alkyl, and oxo.
  • L 2 is –C(O)–.
  • R 1B is selected from the group consisting of OH, N(H)CH 2 CO 2 H, –N(H)CHR 1e CO 2 H, –N(H)–CH 2 CH 2 –(N(CH 2 CO 2 H)CH 2 CH 2 ) n –N(CH 2 CO 2 H) 2 , and –N(CH 2 CO 2 H)–CH 2 CH 2 –N(CH 2 CO 2 H) 2 ; and R 1e is –CH 2 CO 2 H.
  • a conjugate of Formula IIA or a pharmaceutically acceptable salt thereof, wherein R 2 is -OH, 2-aminoethanesulfonic acid, an N-linked natural or unnatural amino acid, or an optionally substituted ethylenediamine; wherein R 2 may be optionally further substituted with a polyether.
  • a conjugate of Formula IIB or a pharmaceutically acceptable salt thereof, wherein R 2 is -OH, 2-aminoethanesulfonic acid, an N-linked natural or unnatural amino acid, or an optionally substituted ethylenediamine; wherein R 2 may be optionally further substituted with a polyether; and R 17 is hydrogen, optionally substituted alkyl, or optionally substituted aryl.
  • a conjugate of Formula IIC or a pharmaceutically acceptable salt thereof, wherein R 2 is -OH, 2-aminoethanesulfonic acid, an N-linked natural or unnatural amino acid, or an optionally substituted ethylenediamine; wherein R 2 may be optionally further substituted with a polyether; and R 17 is hydrogen, optionally substituted alkyl, or optionally substituted aryl.
  • R 17 is hydrogen, alkyl, or aryl; wherein the alkyl, or aryl is optionally substituted with 1-4 substituents independently selected from the group consisting of C 1-4 alkyl, C 1-4 haloalkyl, halo, cyano, OH, –OC 1-4 alkyl, and oxo.
  • R 17 is hydrogen, alkyl, or aryl; wherein the alkyl, or aryl is optionally substituted with 1-4 substituents independently selected from the group consisting of C 1-4 alkyl, C 1-4 haloalkyl, halo, cyano, OH, –OC 1-4 alkyl, and oxo.
  • provided is a conjugate, or a pharmaceutically acceptable salt thereof, where the conjugate is selected from Table 1. Table 1
  • a method for delivering an effective amount of a payload i.e., an inhibitor of poly (ADP-ribose) polymerase (PARP inhibitor), a duocarmycin, a pyrrolobenzodiazepine (PBD), hemiasterlin, HTI-286, and a monoclonal antibody, or a derivative, or analog thereof
  • a payload i.e., an inhibitor of poly (ADP-ribose) polymerase (PARP inhibitor), a duocarmycin, a pyrrolobenzodiazepine (PBD), hemiasterlin, HTI-286, and a monoclonal antibody, or a derivative, or analog thereof
  • PARP inhibitor an inhibitor of poly (ADP-ribose) polymerase
  • PPD pyrrolobenzodiazepine
  • hemiasterlin hemiasterlin
  • HTI-286 hemiasterlin
  • monoclonal antibody a derivative, or analog thereof
  • Supports may be biocompatible supports compositions, i.e., compatible with the subject’s body.
  • a support is non-toxic to the subject and does not substantially react with tissue or biological compounds in the subject.
  • the support can be a hydrogel, among others.
  • a support is capable of implantation into a subject’s body and supporting binding agents (e.g., tetrazine-containing group), as well as payloads after the binding agents conjugate.
  • Representative supports include, but are not limited to polymers, viscous or non-viscous liquid materials, gels, hydrogels, polysaccharide hydrogels, a cross-linked polymer matrix, a metal, a ceramic, a plastic, a bone graft material, alginate, cellulose, chitosan, hyaluronic acid, chondroitin sulfate, heparin, and the like. Supports also include particles, such as nanoparticles, microparticles, and the like.
  • Hydrogels may be polysaccharide hydrogels, alginate, cellulose, hyaluronic acid, chitosan, chitosin, chitin, hyaluronic acid, chondroitin sulfate, heparin, and the like.
  • Other suitable sugar-based biomaterials include those described in Polymer Advanced Technology, 2014, 25, 448-460.
  • Polymers that may be used as the support can include, but are not limited to, polyphosphazenes, polyanhydrides, polyacetals, poly(ortho esters), polyphosphoesters, polycaprolactones, polyurethanes, polylactides, polycarbonates, polyamides, and polyethers, and blends/composites/co-polymers thereof.
  • Representative polyethers include, but are not limited to, poly(ethylene glycol) (PEG), polypropylene glycol) (PPG), triblock Pluronic ([PEG] n -[PPG] m -[PEG]n), PEG diacrylate (PEGDA), and PEG dimethacrylate (PEGDMA).
  • the support can also include proteins and other poly(amino acids), such as collagen, gelatin, elastin and elastin-like polypeptides, albumin, fibrin, poly(gamma-glutamic acid), poly(L-lysine), poly(L-glutamic acid), poly(aspartic acid), and the like.
  • the support is a hydrogel.
  • the support is an alginate.
  • the support is chitin.
  • the support is a hyaluronic acid (e.g., a non-hydrogel hyaluronic acid substantially without crosslinks).
  • the support is chitosin.
  • the support is a particle.
  • Particles of the present disclosure can have a diameter that is 2 cm or less, such as 1.5 cm or less, or 1 cm or less, or 0.5 cm or less.
  • the particles can be nanoparticles or microparticles.
  • Nanoparticles include particles having average dimensions in the nanometer scale (e.g., 1000 nm or less).
  • Microparticles are particles having average dimensions in the micrometer scale (e.g., 1000 ⁇ m or less).
  • average is meant the arithmetic mean.
  • the nanoparticles have a diameter ranging from 1 nm to 1 ⁇ m, such as from 10 nm to 1 ⁇ m, or 25 nm to 1 ⁇ m, or 50 nm to 1 ⁇ m, or 75 nm to 1 ⁇ m, or 100 nm to 1 ⁇ m, or 150 nm to 1 ⁇ m, or 200 nm to 1 ⁇ m, or 250 nm to 1 ⁇ m, or 300 nm to 1 ⁇ m, or 350 nm to 1 ⁇ m, or 400 nm to 1 ⁇ m, or 450 nm to 1 ⁇ m, or 500 nm to 1 ⁇ m.
  • 1 nm to 1 ⁇ m such as from 10 nm to 1 ⁇ m, or 25 nm to 1 ⁇ m, or 50 nm to 1 ⁇ m, or 75 nm to 1 ⁇ m, or 100 nm to 1 ⁇ m, or 150 nm to 1 ⁇ m, or 200 nm to 1
  • the microparticles have a diameter ranging from 1 ⁇ m to 1 mm, such as from 10 ⁇ m to 1 mm, or 25 ⁇ m to 1 mm, or 50 ⁇ m to 1 mm, or 75 ⁇ m to 1 mm, or 100 ⁇ m to 1 mm, or 150 ⁇ m to 1 mm, or 200 ⁇ m to 1 mm, or 250 ⁇ m to 1 mm, or 300 ⁇ m to 1 mm, or 350 ⁇ m to 1 mm, or 400 ⁇ m to 1 mm, or 450 ⁇ m to 1 mm, or 500 ⁇ m to 1 mm.
  • 1 ⁇ m to 1 mm such as from 10 ⁇ m to 1 mm, or 25 ⁇ m to 1 mm, or 50 ⁇ m to 1 mm, or 75 ⁇ m to 1 mm, or 100 ⁇ m to 1 mm, or 150 ⁇ m to 1 mm, or 200 ⁇ m to 1 mm, or 250 ⁇ m to 1 mm, or 300 ⁇ m to 1
  • small particles on the order of 10-100 nm in diameter may be assembled to form larger complexes, such as clusters or assemblies on the order of 1-10 ⁇ m.
  • Particles of the present disclosure may be substantially spherical, such that the particles have a substantially circular cross-section.
  • Other particle shapes may also be used, such as, but not limited to, ellipsoid, cubic, cylindrical, conical, needle, or other irregular shapes.
  • a “particle” may take the form of any fabricated material, a molecule, cryptophan, a virus, a phage, etc.
  • the particle may be composed of a material, such as, but not limited to, a metal, a ceramic, a plastic, a glass, a composite, a polymer, a hydrogel, and the like.
  • the particles may be made of an inert material, such as alginate or iron oxide.
  • the particles may be magnetic and can be formed from a paramagnetic, super-paramagnetic or ferromagnetic material, or other material that responds to a magnetic field.
  • a particle may be of any shape, for example, spheres, rods, non- symmetrical shapes, etc.
  • the particles, or a group of several particles in a complex may be functionalized with a receptor that has a specific affinity to bind to or interact with a clinically relevant substrate.
  • the receptor may be inherent to the particle itself.
  • the particle itself may be a virus or a phage with an inherent affinity for certain substrates.
  • the particles can be functionalized by covalently or otherwise attaching or associating a receptor that specifically binds or otherwise recognizes a particular clinically relevant substrate.
  • the functionalized receptor can be an antibody, peptide, nucleic acid, phage, bacteria, virus, or any other molecule with a defined affinity for a target substrate.
  • Examples of material that may be used for the “particles” and/or “carrier” include polylactic acid, polyglycolic acid, PLGA polymers, alginates and alginate derivatives, gelatin, collagen, fibrin, hyaluronic acid, laminin rich gels, agarose, natural and synthetic polysaccharides, polyamino acids, polypeptides, polyesters, poly anhydrides, polyphosphazines, poly(vinyl alcohols), poly(alkylene oxides), poly(allylamines)(PAM), poly(acrylates), modified styrene polymers, pluronic polyols, polyoxamers, poly(uronic acids), poly(vinylpyrrolidone) and copolymers or graft copolymers of any of the above.
  • the particles, or a group of several particles in a complex may be functionalized with a targeting agent (e.g., a ligand or antibody) that specifically binds (or substantially specifically binds) to a target (e.g., a target receptor or a cell surface target, such as a clinically relevant receptor or cell surface target (e.g., antigen)).
  • a targeting agent e.g., a ligand or antibody
  • the targeting agent may be attached directly to the particle itself.
  • the targeting agent can be an antibody, peptide, nucleic acid, phage, bacteria, virus, or any other molecule with a specific affinity for a target receptor or cell surface target.
  • the receptor or cell surface target is PD-1, CTLA-4, HER2/neu, HER1/EGFR, VEGFR, 4-1BB, GITR, or other cellular receptors or cell surface targets.
  • the targeting agent is a monoclonal antibody.
  • a monoclonal antibody can be an entire monoclonal antibody, or a fragment thereof (e.g., antigen-binding fragment (Fab)).
  • the targeting agent is an antibody, or antibody fragment, that targets one or more of CD25 (NCBI Gene ID 3559), CEA (NCBI Gene ID 634), CEACAM5 (NCBI Gene ID 1048), ASPH (NCBI Gene ID 444), EGFR (NCBI Gene ID 1956), EPCAM (NCBI Gene ID 4072), VEGFR (NCBI Gene ID 3791), PDGFR (NCBI Gene ID 5159), TROP2 (NCBI Gene ID 4070), Nectin4 (NCBI Gene ID 81607), PSMA (NCBI Gene ID 2346), BCMA (NCBI Gene ID 608), CD22 (NCBI Gene ID 933), CD20 (NCBI Gene ID 920), CD19 (NCBI Gene ID 930), CD79b (NCBI Gene ID 974), CD38 (NCBI Gene ID 952), CD45 (NCBI Gene ID 5788), Endoglin (NCBI Gene ID 2022), FGFR2 (NCBI Gene ID 14183), C4.4A (NCBI Gene ID 27076), Claudin-18
  • CD25
  • the targeting agent is an antibody, or antibody fragment, that targets CD25, such as Daclizumab, RG6292, basiliximab, or HuMax-TAC, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets CEA, such as Labetuzumab, 15-1-32, PR1A3, or cT84.66, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets CEACAM5, such as Tusamitiamab or CC4, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets ASPH, such as PAN-622, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets EGFR, such as Cetuximab, necitumumab, nimotuzumab, matuzumab, AMG595, depatuxizumab, dapatuxizumab, duligotuzumab, futuximab, GC1118, imgatuzumab, panitumumab, alutumumab, tomuzotuximab, or laprituximab, or an antibody fragment derived therefrom.
  • EGFR such as Cetuximab, necitumumab, nimotuzumab, matuzumab, AMG595, depatuxizumab, dapatuxizumab, duligotuzumab, futuximab, GC1118, imgatuzumab, panit
  • the targeting agent is an antibody, or antibody fragment, that targets EPCAM, such as oportuzumab, citatuzumab, tucotuzumab, catumaxomab, edrecolomab, or adecatumumab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets VEGFR, such as ramucizumab, ramucirumab, or vulinacimab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets PDGFR, such as olaratumab or ramucirumab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets TROP2, such as sacituzumab or Pr1E11, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets Nectin4, such as enfortumab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets PSMA, such as J591 or MLN591, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets BCMA, such as belantamab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets CD22, such as moxetumomab, inotuzumab, epratuzumab, or pinatuzumab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets CD20, such as ublituximab, ofatumumab, rituximab, obinutuzumab, tositumomab, or ibritumomab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets CD19, such as loncastuximab, XMAB-5574, MOR208, coltuximab, denintuzumab, taplitumomab, or MDX-1342, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets CD79b, such as polatuzumab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets CD38, such as isatuximab, daratumumab, MOR202, or TAK-079, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets CD45, such as I-131-BC8, or Iomab-B, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets endoglin, such as carotuximab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets FGFR2, such as bemarituzumab or aprutumab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets C4.4A, such as lupartumab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets Claudin-18.2, such as zolbetuximab, or claudiximab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets MMP9, such as andecaliximab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets folate receptor, such as mirvetuximab, farletuzumab, MORAb-202, MORAb-003, or SP8166, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets DLL3, such as rovalpituzumab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets CD138, such as indatuximab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets CD56, such as lorvotuzumab, promiximab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets CD37, such as BI 836826, otlertuzumab, or naratuximab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets CD74, such as milatuzumab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets mesothelin, such as anetumab, amatuximab, or MMOT-0530A, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets IL- 6R, such as tocilizumab or sarilumab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets SLAMF7, such as elotuzumab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets BAFF, such as belimumab, or an antibody fragment therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets MUC1, such as KL-6, MY.1E12, hMUC1-1H7, TAB004, huC242, clivatuzumab, 8HuDS6, gatipotuzumab, AR20.5, or cantuzumab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets GPC3, such as codrituzumab, ECT204, or MDX-1414, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets HER2, such as pertuzumab, trastuzumab, or margetuximab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets HER3, such as patritumab, seribantumab, lumretuzumab, elgemtumab, AV-203, CDX-3379, or GSK284933, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets CD30, such as brentuximab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets CD33, such as gemtuzumab, BI 835858, vadastuximab, or lintuzumab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets CD123, such as KHK2823, taclotuzumab, or G4723A, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets GPNMB, such as glembatumumab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets cMET, such as telisotuzumab, onartuzumab, or SAIT301, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets CD142, such as tisotumab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets NaPi2B, such as lifastuzumab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets GCC, such as indusatumab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets STEAP1, such as vandortuzumab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets MUC16, such as sofituzumab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets CD70, such as vorsetuzumab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets CD44, such as bivatuzumab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets vWF, such as caplacizumab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets TNF, such as ozoralizumab, V565, or PF-05230905, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets IL- 6R, such as vobarilizumab, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets BCMA, such as LCAR-B38M, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets ADAMTS5, such as M6495, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets CX3CR1, such as BI 655088, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets CXCR4, such as AD-214 or ALX-0651, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets TfR1, such as TXB4, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets VEGFR, such as CDP791, or an antibody fragment derived therefrom.
  • the targeting agent is an antibody, or antibody fragment, that targets PSMA, such as GY1, or an antibody fragment derived therefrom.
  • the support is a bone graft material, such as a bone graft substitute material.
  • a bone graft substitute material is a material structurally similar to bone.
  • a bone graft substitute material is bioresorbable such that the bone graft substitute material can dissolve or be absorbed in the body over time.
  • a bone graft substitute material can be osteoconductive, such that it facilitates blood vessel and new bone formation into the bone graft substitute material.
  • the bone graft substitute material is osteoinductive, such that it facilitates the formation of new bone through active recruitment of mesenchymal stem cells from the surrounding tissue.
  • growth factors such as bone morphogenetic proteins
  • Bone graft substitute materials include, but are not limited to, hydroxyapatite, tricalcium phosphate, demineralized bone matrix, bovine collagen, calcium sulfate, calcium phosphate, cancellous bone chips, and the like, and combinations thereof.
  • Therapeutic support compositions of the present disclosure include a support and a first binding agent covalently linked to the support.
  • the binding agent may be attached to the support on a surface of the support, such as a solvent-accessible surface of the support (e.g., a surface of the support that is in contact with the surrounding solvent).
  • the binding agent is attached directly to the support.
  • the binding agent may be covalently attached to the surface of the support, e.g., through a covalent bond, such as an amide, amine, ester, carbamate, urea, thioether, thiocarbamate, thiocarbonate, thiourea, etc.
  • the binding agent is covalently attached to the support through an amide bond.
  • the binding agent may be linked to the support via a linker.
  • linker can be used to link the binding agent to the support.
  • Representative linkers can have from 1 to 100 linking atoms, and can include ethylene-oxy groups, amines, esters, amides, carbamates, carbonates, and ketone functional groups.
  • linkers may have from 1 to 50 linking atoms, or from 5 to 50 linking atoms, or from 10 to 50 linking atoms.
  • linkers may have from 1 to 50 linking atoms, or from 5 to 50 linking atoms, or from 10 to 50 linking atoms.
  • the therapeutic support composition comprises units of formula: [0257] In some embodiments, the therapeutic support compositions comprise units of formula: . [0258] In some embodiments, the therapeutic support compositions comprise units of formula: [0259] In some embodiments, the therapeutic support compositions comprise substituted hyaluronic acid having units of formula (II): wherein G 2 is R 22 is a linker 20 of 1 to 100 linking atoms; and R is as defined herein. [0260] In further embodiments, G 2 is [0261] In still further embodiments, G 2 is 20 and R is hydrogen or C 1-4 alkyl.
  • R 20 is hydrogen or C 1-4 alkyl.
  • the therapeutic support compositions comprise units of formula: .
  • Additional therapeutic support compositions are exemplified in WO2017/044983, WO/2015/139025A1, and WO/2014/205126A1, the entire contents of each of which is incorporated herein by reference in their entirety.
  • the hyaluronic acid derivative includes a hyaluronic acid having a plurality of glucuronic acid units and a tetrazine-containing group linked or directly bonded to a glucuronic acid unit of the hyaluronic acid.
  • the hyaluronic acid may also have a plurality of N-acetylglucosamine units.
  • the N-acetylglucosamine units of the hyaluronic acid are not linked or conjugated to the tetrazine-containing group.
  • the tetrazine-containing group can be linked or directly bonded through a carboxylic acid of a glucuronic acid unit.
  • the tetrazine-containing group can be incorporated into the hyaluronic acid from about 0.1% to about 80% as measured by the % of carboxylic acids being linked or conjugated to the tetrazine-containing group, such as about 1% to about 75%, about 5% to about 75%, about 10% to about 50%, or about 40% to about 75% as measured by the % of carboxylic acids being linked or conjugated to the tetrazine-containing group.
  • D. Methods of Treatment [0267] Aspects of the present disclosure include methods for delivering a payload to a target location in a subject. In certain embodiments, the method includes selectively delivering a payload to the target location in a subject.
  • a support composition of the present disclosure may be localized to a desired target location in a subject.
  • methods of the present disclosure may include administering to a subject a support composition as described herein.
  • the support composition may be administered to the subject at a desired target location in the subject.
  • the support composition may be implanted into the subject at the desired target location in the subject.
  • the support composition may be attached to a targeting agent as described herein, and the method may include administering the support composition to the subject (e.g., administered systemically).
  • the support composition that is attached to a targeting agent may localize at a desired target location in the subject through specific binding of the targeting agent to its target (e.g., antibody- antigen interaction, and the like), or may localize on the surface of a desired target (e.g., a cell surface) through specific binding of the targeting agent to its target (e.g., antibody-antigen interaction, and the like).
  • the method includes administering to the subject a functionalized payload such that the functionalized payload binds to the support composition to form a support complex.
  • the functionalized payload may be administered systemically to the subject.
  • selective delivery of the functionalized payload results in a concentration of the payload at the target location that is greater than the concentration of the payload elsewhere in the subject (e.g., at non-targeted areas in the subject).
  • a method of treating cancer comprising administering to a subject in need thereof, a therapeutically effective amount of a conjugate as described herein, or a pharmaceutically acceptable salt thereof, and a therapeutic support composition.
  • the cancer is metastatic.
  • the cancer is melanoma, renal cancer, prostate cancer, ovarian cancer, endometrial carcinoma, breast cancer, glioblastoma, lung cancer, soft tissue sarcoma, fibrosarcoma, osteosarcoma, pancreatic cancer, gastric carcinoma, squamous cell carcinoma of head/neck, anal/vulvar carcinoma, esophageal carcinoma, pancreatic adenocarcinoma, cervical carcinoma, hepatocellular carcinoma, Kaposi’s sarcoma, Non-Hodgkin lymphoma, Hodgkin’s lymphoma Wilm’s tumor/neuroblastoma, bladder cancer, thyroid adenocarcinoma, pancreatic neuroendocrine tumors, prostatic adenocarcinoma, nasopharyngeal carcinoma, or cutaneous T-cell lymphoma.
  • the approach can be used for the treatment and/or diagnosis of hematological malignancies such as myelodysplastic syndromes, acute myeloid leukemia, myeldysplastic syndromes, chronic myelogenous leukemia, chronic myelomonocytic leukemia, primary myelofibrosis, diffuse large B-cell lymphoma, chronic lymphocytic leukemia, monoclonal gammopathy, plasma cell myeloma, follicular lymphoma, marginal zone lymphoma, classical Hodgkin lymphoma, monoclonal B- cell lymphocytosis, lymphoproliferative disorder NOS, T-cell lymphoma, precursor B-lymphoblastic leukemia, mantle cell lymphoma, plasmacytoma, Burkitt lymphoma, T-cell leukemia, hairy-cell leukemia, precursor T-lymphoblastic leukemia, nodular lymphocyte predominant Hodgkin
  • the cancer is a melanoma, renal cancer, prostate cancer, ovarian cancer, breast cancer, glioma, lung cancer, soft tissue carcinoma, soft tissue sarcoma, osteosarcoma, or pancreatic cancer.
  • the cancer is a solid tumor.
  • the cancer is a soft tissue sarcoma.
  • the soft tissue sarcoma is a fibrosarcoma, rhabdomyosarcoma, or Ewing’s sarcoma.
  • the method also comprises enhancing or eliciting an immune response.
  • the immune response is an increase in one or more of leukocytes, lymphocytes, monocytes, and eosinophils.
  • the method further comprising administering a therapeutically effective amount of an additional therapeutic agent selected from the group consisting of an anticancer agent, an immunomodulatory agent, or a trans-cyclooctene prodrug thereof.
  • an additional therapeutic agent selected from the group consisting of an anticancer agent, an immunomodulatory agent, or a trans-cyclooctene prodrug thereof.
  • Anticancer agents, immunomodulatory agents, and their trans-cyclooctene prodrugs are known in the art.
  • Indications for this approach include cancer, both hematological and solid cancers.
  • the approach can be used for the treatment and/or diagnosis of soft tissue sarcomas: rhabdomyosarcoma, fibrosarcoma, Ewing’s sarcoma, and all the different subtypes of soft tissue sarcoma as well as osteosarcoma.
  • the compositions can be for the treatment and/or diagnosis of pigmented vilonodular synovitis.
  • the compositions of the present disclosure find use in treatment and/or diagnosis of a condition or disease in a subject that is amenable to treatment or diagnosis by administration of the payload (e.g., the parent drug (i.e., the drug prior to conjugation to the composition)).
  • treatment is meant that at least an amelioration of the symptoms associated with the condition afflicting the subject is achieved, where amelioration is used in a broad sense to refer to at least a reduction in the magnitude of a parameter, e.g., symptom, associated with the condition being treated.
  • amelioration also includes situations where the pathological condition, or at least symptoms associated therewith, are completely inhibited, e.g., prevented from happening, or stopped, e.g., terminated, such that the subject no longer suffers from the condition, or at least the symptoms that characterize the condition.
  • Treatment may include inhibition, that is, arresting the development or further development of clinical symptoms, e.g., mitigating or completely inhibiting an active disease.
  • Treatment may include relief, that is, causing the regression of clinical symptoms.
  • the term “treating” includes any or all of: reducing growth of a solid tumor, inhibiting replication of cancer cells, reducing overall tumor burden, prolonged survival and ameliorating one or more symptoms associated with a cancer.
  • the subject to be treated can be one that is in need of therapy, where the subject to be treated is one amenable to treatment using the parent drug. Accordingly, a variety of subjects may be amenable to treatment using the compositions disclosed herein. Generally, such subjects are “mammals,” with humans being of interest.
  • Other subjects can include domestic pets (e.g., dogs and cats), livestock (e.g., cows, pigs, goats, horses, and the like), rodents (e.g., mice, guinea pigs, and rats, e.g., as in animal models of disease), as well as non-human primates (e.g., chimpanzees, and monkeys).
  • domestic pets e.g., dogs and cats
  • livestock e.g., cows, pigs, goats, horses, and the like
  • rodents e.g., mice, guinea pigs, and rats, e.g., as in animal models of disease
  • non-human primates e.g., chimpanzees, and monkeys.
  • the functionalized payloads, therapeutic support compositions, additional therapeutic agents, and methods can be used for the treatment, prevention, and/or diagnosis of solid tumors, including but not limited to, melanoma (e.g., unresectable, metastatic melanoma), renal cancer (e.g., renal cell carcinoma), prostate cancer (e.g., metastatic castration resistant prostate cancer), ovarian cancer (e.g., epithelial ovarian cancer, such as metastatic epithelial ovarian cancer), endometrial carcinoma, breast cancer (e.g., triple negative breast cancer), glioblastoma (e.g., glioblastoma multiforme), and lung cancer (e.g., non-small cell lung cancer), soft tissue sarcoma, fibrosarcoma, osteosarcoma, pancreatic cancer, gastric carcinoma, squamous cell carcinoma of head/neck, anal/vulvar carcinoma, esophageal carcinoma, pancreatic cancer
  • melanoma
  • the disclosed approach lends itself well as an adjuvant / neoadjuvant system.
  • particles as disclosed herein could be placed during the biopsy, once the results from the study come back, the practitioner could deliver the appropriate cocktail to the desired site in the body. This would minimize the size of the tumor particularly in the context of a surgically resectable tumor. Then at the end of the surgery, the surgeon could place more particles around the surgical cavity and treat the patient with further doses of treatment (e.g. chemotherapy through the disclosed approach) to minimize the risk of any cancer cells that may have been missed in the surgical margins.
  • the disclosed methods provide the ability to place particles as disclosed herein at the time of the biopsy.
  • the practitioner can deliver through to the biopsy site immunomodulatory agents such as TLR agonists, STING agonists, chemokines (agents that attract cancerous cells and/or immune cells) and adjuvants to enhance the immune system with fewer side effects as well as the chemotherapeutics agents combined with immunotherapy agents.
  • immunomodulatory agents such as TLR agonists, STING agonists, chemokines (agents that attract cancerous cells and/or immune cells) and adjuvants to enhance the immune system with fewer side effects as well as the chemotherapeutics agents combined with immunotherapy agents.
  • the chemotherapy agent would treat the solid tumor or specific location, while the enhanced response of the immunotherapy would help with distant metastatic sites.
  • the disclosed compositions and methods could employ or be used with anthracyclines, taxanes, gemcitabine and other agents to enhance the efficacy of one or more immunomodulatory agents such as ipilimumab, nivolumab, pembrolizumab, avelumab (also known as MSB0010718C; Pfizer).
  • immunomodulatory agents such as ipilimumab, nivolumab, pembrolizumab, avelumab (also known as MSB0010718C; Pfizer).
  • the disclosed methods may be used to treat or prevent cancer, including metastatic cancer. Cancer is a group of related diseases that may include sustained proliferative signaling, evasion of growth suppressors, resistance to cell death, enablement of replicative immortality, induction of angiogenesis, and the activation of invasion and metastasis.
  • Cancer that may be treated by the disclosed methods includes, but is not limited to, astrocytoma, adrenocortical carcinoma, appendix cancer, basal cell carcinoma, bile duct cancer, bladder cancer, bone cancer, brain cancer, brain stem cancer, brain stem glioma, breast cancer, cervical cancer, colon cancer, colorectal cancer, cutaneous T-cell lymphoma, diffuse intrinsic pontine glioma, ductal cancer, endometrial cancer, ependymoma, Ewing’s sarcoma, esophageal cancer, eye cancer, fibrosarcoma, gallbladder cancer, gastric cancer, gastrointestinal cancer, germ cell tumor, glioma, hepatocellular cancer, histiocytosis
  • the cancer that may be treated by the disclosed methods is melanoma, renal cancer, prostate cancer, ovarian cancer, breast cancer, glioma, lung cancer, soft tissue carcinoma, soft tissue sarcoma, osteosarcoma, or pancreatic cancer.
  • the cancer is a solid tumor.
  • the cancer is a soft tissue carcinoma.
  • the cancer is afibrosarcoma.
  • the cancer is diffuse intrinsic pontine glioma.
  • the cancer is a metastatic cancer.
  • anti-cancer agents e.g., anthracyclines, cyclophosphamide, oxaliplatin
  • ICD immune-associated molecular patterns
  • Calreticulin one of the DAMP molecules, which is normally in the lumen of endoplasmic reticulum (ER), is translocated after the induction of immunogenic apoptosis to the surface of dying cell where it functions as an "eat me” signal for professional phagocytes.
  • Other important surface exposed DAMPs are heat-shock proteins (HSPs), namely HSP70 and HSP90, which are under stress condition also translocated to the plasma membrane.
  • HSPs heat-shock proteins
  • HSP70 and HSP90 heat-shock proteins
  • APC antigen-presenting cell
  • HMGB1 secreted amphoterin
  • ATP ATP
  • TLR Toll-like receptor
  • the functionalized payloads, therapeutic support compositions, and methods can be used for the treatment, prevention, and/or diagnosis of solid tumors, including but not limited to, melanoma (e.g.
  • unresectable, metastatic melanoma renal cancer (e.g., renal cell carcinoma), prostate cancer (e.g., metastatic castration resistant prostate cancer), ovarian cancer (e.g., epithelial ovarian cancer, such as metastatic epithelial ovarian cancer), breast cancer (e.g., triple negative breast cancer), glioblastoma (e.g., glioblastoma multiforme), and lung cancer (e.g., non-small cell lung cancer), soft tissue sarcoma, fibrosarcoma, osteosarcoma, pancreatic cancer, among others.
  • the disclosed approach lends itself well as an adjuvant / neoadjuvant system.
  • therapeutic support compositions as disclosed herein could be placed during the biopsy, once the results from the study come back, the practitioner could administer the appropriate cocktail to deliver treatment to the desired site in the body (compound of Formula I and optional additional therapeutic agent(s)).
  • the results of the biopsy may indicate the amount and type of treatment to deliver to the site of a tumor.
  • chemokines agents that attract cancerous cells and/or immune cells
  • adjuvants to enhance the immune system with fewer side effects as well as the chemotherapeutics agents
  • the disclosed compounds and compositions may be administered prior to surgical resection.
  • the disclosed methods may minimize the size of the tumor prior to surgical resection.
  • the disclosed conjugates, compounds and compositions may be administered during surgical resection.
  • the disclosed conjugates, compounds and compositions may be administered after surgical resection.
  • Therapeutic support composition may be placed around the surgical cavity at the end of surgical resection and the subject may then be treated with further doses of a treatment to minimize the risk of any cancer cells that may have been missed in the surgical margins.
  • the disclosed methods may include multiple systemic doses of functionalized payload that focus at one location.
  • the disclosed methods may be used to deliver a second payload.
  • the disclosed methods may be used to administer a second functionalized payload if the tumor is resistant to the first payload.
  • a second payload may be a TCO-labeled payload of gemcitabine or docetaxel.
  • the TCO-labeled payload of gemcitabine or docetaxel may be administered in combination with doxorubicin.
  • the second functionalized payload may be activated by the therapeutic support composition used for the first prodrug.
  • the functionalized payloads disclosed herein may function as adjuvants. This combination approach would be beneficial to patients.
  • the chemotherapy agent would treat the solid tumor or specific location and may enhance or elicit an immune response, while the enhanced response of the immunotherapy of the functionalized payload and/or separate agent may help with distant metastatic sites.
  • the disclosed compositions and methods could employ or be used with anthracyclines, auristatins, vinca alkaloids, taxanes, gemcitabine, campothecin analogues and other agents to enhance the efficacy of ipilimumab, nivolumab, pembrolizumab, avelumab (also known as MSB0010718C; Pfizer).
  • the disclosed methods may be used to treat diffuse intrinsic pontine gliomas.
  • Diffuse intrinsic pontine gliomas are pediatric brainstem tumors that may be highly malignant and may be difficult to treat.
  • DIPG intracranial pressure
  • Diagnosis of DIPG may begin with clinical symptoms and may be confirmed by MRI. The disease may begin with several months of generalized symptoms, including behavioral changes and difficulties in school, double vision, abnormal or limited eye movements, an asymmetric smile, loss of balance, and weakness.
  • the disclosed methods may be used to deliver molecular payloads to the site of a DIPG .
  • the disclosed methods may include delivering drugs systemically that are only activated at the tumor site.
  • the disclosed methods may be used as a neoadjuvant or adjuvant therapy.
  • the biomaterial may be placed during a biopsy.
  • the results of the biopsy may indicate the amount and type of treatment to deliver to the site of a tumor.
  • the disclosed compounds and compositions may be administered prior to surgical resection.
  • the disclosed methods may minimize the size of the tumor prior to surgical resection.
  • the disclosed compounds and compositions may be administered during surgical resection.
  • the disclosed compounds and compositions may be administered after surgical resection.
  • Biomaterial may be placed around the surgical cavity at the end of surgical resection and the subject may then be treated with further doses of a treatment.
  • the disclosed biodegradable gel may be implanted at the time of biopsy or surgery.
  • the disclosed methods may not require an additional invasive procedure to deliver additional doses of the disclosed compounds and compositions.
  • the disclosed methods may include multiple systemic doses of functionalized payload that focus at one location.
  • the disclosed methods may be used to deliver a second payload.
  • the disclosed methods may be used to administer a second functionalized payload if the tumor is resistant to the first payload.
  • a second payload may be a TCO-labeled payload of paclitaxel, docetaxel, anthracyclines, auristatins, vinca alkaloids, taxanes, gemcitabine, campothecin analogues, or other agents .
  • the TCO-labeled payload of gemcitabine, paclitaxel, or docetaxel may be administered in combination with doxorubicin.
  • the second functionalized payload may be activated by the therapeutic support composition used for the first prodrug.
  • Modes of Administration [0298] Methods of treatment may include any number of modes of administering a disclosed conjugate, compound or composition.
  • Modes of administration may include tablets, pills, dragees, hard and soft gel capsules, granules, pellets, skin patches, skin creams, skin gels, aqueous, lipid, oily or other solutions, emulsions such as oil-in-water emulsions, liposomes, aqueous or oily suspensions, syrups, elixirs, solid emulsions, solid dispersions or dispersible powders.
  • the conjugate, compound or compositions disclosed herein may also be dispersed in a microparticle, e.g. a nanoparticulate composition.
  • the conjugates, compounds or compositions disclosed herein may be dissolved or suspended in a physiologically acceptable diluent, such as water, buffer, oils with or without solubilizers, surface-active agents, dispersants or emulsifiers.
  • a physiologically acceptable diluent such as water, buffer, oils with or without solubilizers, surface-active agents, dispersants or emulsifiers.
  • Suitable oils may include, for example, olive oil, peanut oil, cottonseed oil, soybean oil, castor oil and sesame oil.
  • the conjugates, compounds or compositions disclosed herein may be administered in the form of an aqueous, lipid, oily or other kind of solution or suspension, or even administered in the form of liposomes or nano-suspensions.
  • compositions are preferably administered locally at the site of a tumor, such as by injection or implantation.
  • Functionalized payloads such as conjugates of Formula I or (III), may be administered by any convenient route, in view of a subject’s condition and judgment of medical professionals.
  • Parenteral administration is a suitable means of administering conjugates of Formula I.
  • the amount of composition administered to a subject can be initially determined based on guidance of a dose and/or dosage regimen of the parent drug.
  • compositions can provide for targeted delivery and/or enhanced serum half-life of the bound drug, thus providing for at least one of reduced dose or reduced administrations in a dosage regimen.
  • compositions can provide for reduced dose and/or reduced administration in a dosage regimen relative to the parent drug prior to being conjugated in a composition of the present disclosure.
  • the pharmaceutical formulation may be provided in unit dosage form. In such form the pharmaceutical formulation may be subdivided into unit doses containing appropriate quantities of the compositions of the present disclosure.
  • the unit dosage form can be a packaged preparation, the package containing discrete quantities of the preparation, such as packeted tablets, capsules, and powders in pouches, vials or ampoules.
  • kits comprising a conjugate, or a pharmaceutically acceptable salt thereof, as described herein, or the pharmaceutical composition comprising the same, and instructions for use thereof.
  • the kit further comprising the therapeutic support composition.
  • Compositions of the present disclosure can be present in any suitable amount, and can depend on various factors including, but not limited to, weight and age of the subject, state of the disease, etc. Suitable dosage ranges for the composition of the present disclosure include from 0.1 mg to 10,000 mg, or 1 mg to 1000 mg, or 10 mg to 750 mg, or 25 mg to 500 mg, or 50 mg to 250 mg.
  • suitable dosages for the composition of the present disclosure include 1 mg, 5 mg, 10 mg, 20 mg, 30 mg, 40 mg, 50 mg, 60 mg, 70 mg, 80 mg, 90 mg, 100 mg, 150 mg, 200 mg, 250 mg, 300 mg, 350 mg, 400 mg, 450 mg, 500 mg, 550 mg, 600 mg, 650 mg, 700 mg, 750 mg, 800 mg, 850 mg, 900 mg, 950 mg or 1000 mg.
  • multiple doses of a composition are administered.
  • the frequency of administration of a composition can vary depending on any of a variety of factors, e.g., severity of the symptoms, condition of the subject, etc.
  • a composition is administered once per month, twice per month, three times per month, every other week (qow), once per week (qw), twice per week (biw), three times per week (tiw), four times per week, five times per week, six times per week, every other day (qod), daily (qd), twice a day (qid), or three times a day (tid).
  • the compositions of the present disclosure can be administered at any suitable frequency, interval and duration.
  • the composition of the present disclosure can be administered once an hour, or two, three or more times an hour, once a day, or two, three, or more times per day, or once every 2 days, 3 days, 4 days, 5 days, 6 days, or 7 days, so as to provide the desired dosage level to the subject.
  • representative intervals include 5 min, 10 min, 15 min, 20 min, 30 min, 45 min and 60 minutes, as well as 1 hr, 2 hr, 4 hr, 6 hr, 8 hr, 10 hr, 12 hr, 16 hr, 20 hr, and 24 hours.
  • composition of the present disclosure can be administered once, twice, or three or more times, for an hour, for 1 to 6 hours, for 1 to 12 hours, for 1 to 24 hours, for 6 to 12 hours, for 12 to 24 hours, for a single day, for 1 to 7 days, for a single week, for 1 to 4 weeks, for a month, for 1 to 12 months, for a year or more, or even indefinitely.
  • the compositions of the present disclosure can be co-administered with another active agent.
  • Co-administration includes administering the composition of the present disclosure and active agent within 0.5 hr, 1 hr, 2 hr, 4 hr, 6 hr, 8 hr, 10 hr, 12 hr, 16 hr, 20 hr, or 24 hours of each other.
  • Co- administration also includes administering the composition of the present disclosure and active agent simultaneously or approximately simultaneously (e.g., within about 1 min, 5 min, 10 min, 15 min, 20 min, or 30 minutes of each other), or sequentially in any order.
  • the composition of the present disclosure and the active agent can each be administered once a day, or two, three, or more times per day so as to provide the desired dosage level per day. [0310]
  • Co-administration can be accomplished by coimplantation or coinjection.
  • co-administration can be accomplished by co-formulation, e.g., preparing a single pharmaceutical formulation including both the composition of the present disclosure and the active agent.
  • the composition of the present disclosure and the active agent can be formulated separately and co-administered to the subject.
  • the composition of the present disclosure and the active agent can be present in a formulation in any suitable weight ratio, such as from 1:100 to 100:1 (w/w), or 1:50 to 50:1, or 1:25 to 25:1, or 1:10 to 10:1, or 1:5 to 5:1 (w/w).
  • composition of the present disclosure and the other active agent can be present in any suitable weight ratio, such as 1:100 (w/w), 1:75, 1:50, 1:25, 1:10, 1:5, 1:4, 1:3, 1:2, 1:1, 2:1, 3:1, 4:1, 5:1, 10:1, 25:1, 50:1, 75:1, or 100:1 (w/w).
  • suitable weight ratio such as 1:100 (w/w), 1:75, 1:50, 1:25, 1:10, 1:5, 1:4, 1:3, 1:2, 1:1, 2:1, 3:1, 4:1, 5:1, 10:1, 25:1, 50:1, 75:1, or 100:1 (w/w).
  • Other dosages and dosage ratios of the composition of the present disclosure and the active agent are suitable in the formulations and methods described herein.
  • the invention provides a method of treating cancer or enhancing or eliciting an immune response comprising administering to a subject in need thereof: a therapeutically effective amount of a conjugate of the invention (e.g., Formula I), or a pharmaceutically acceptable salt or composition thereof; a therapeutic support composition, as described herein; and a therapeutically effective amount of an additional therapeutic agent selected from the group consisting of an anticancer agent, an immunomodulatory agent, or a trans-cyclooctene prodrug thereof.
  • a conjugate of the invention e.g., Formula I
  • an additional therapeutic agent selected from the group consisting of an anticancer agent, an immunomodulatory agent, or a trans-cyclooctene prodrug thereof.
  • the invention also provides a pharmaceutical combination comprising a conjugate described herein, or a pharmaceutically acceptable salt, or composition thereof; a therapeutic support composition, as described herein; and an additional therapeutic agent selected from the group consisting of an anticancer agent, an immunomodulatory agent, or a trans-cyclooctene prodrug thereof, for use in the treatment or prevention of a cancer or for use in enhancing or eliciting an immune response.
  • the invention also provides the use of a pharmaceutical combination comprising a conjugate described herein, or a pharmaceutically acceptable salt, or composition thereof; a therapeutic support composition; and a therapeutically effective amount of an additional therapeutic agent selected from the group consisting of an anticancer agent, an immunomodulatory agent, or a trans-cyclooctene prodrug thereof for the treatment or prevention of a cancer or for use in enhancing or eliciting an immune response.
  • an additional therapeutic agent selected from the group consisting of an anticancer agent, an immunomodulatory agent, or a trans-cyclooctene prodrug thereof for the treatment or prevention of a cancer or for use in enhancing or eliciting an immune response.
  • the components of the pharmaceutical combinations may be administered/used simultaneously, separately, or sequentially, and in any order, and the components may be administered separately or as a fixed combination.
  • the delay of progression or treatment of diseases according to the invention may comprise administration of the first active ingredient in free or pharmaceutically acceptable salt form and administration of the second active ingredient in free or pharmaceutically acceptable salt form, simultaneously or sequentially in any order, in jointly therapeutically effective amounts or effective amounts, e.g. in daily dosages corresponding to the amounts described herein.
  • the individual active ingredients of the combination can be administered separately at different times during the course of therapy or concurrently in divided or single dosage forms. The present disclosure is therefore to be understood as embracing all such regimes of simultaneous or alternating treatment and the term "administering" is to be interpreted accordingly.
  • a pharmaceutical combination defines either a fixed combination in one dosage unit form or separate dosages forms for the combined administration where the combined administration may be independently at the same time or at different times.
  • the therapeutic support composition and conjugate may be administered/used simultaneously (e.g., through coinjection or coimplantation), separately, or sequentially, followed by administration of the additional therapeutic agent selected from the group consisting of an anticancer agent, an immunomodulatory agent, or a trans- cyclooctene prodrug thereof.
  • the methods and uses in treating cancer include administering/localizing the therapeutic support composition at a tumor.
  • the administration of the conjugate, or a pharmaceutically acceptable salt, or composition thereof; the therapeutic support composition; and the additional therapeutic agent may inhibit the growth of the tumor.
  • Additional therapeutic agent(s) may be administered simultaneously or sequentially with the disclosed conjugates and compositions. Sequential administration includes administration before or after the disclosed conjugates and compositions. An additional therapeutic agent may be administered before the disclosed conjugates and compositions. An additional therapeutic agent may be administered after the disclosed conjugates and compositions. An additional therapeutic agent may be administered at the same time as the disclosed conjugates and compositions. In some embodiments, the additional therapeutic agent or agents may be administered in the same composition as the disclosed conjugates. In other embodiments, there may be an interval of time between administration of the additional therapeutic agent and the disclosed conjugates or compositions.
  • administration of an additional therapeutic agent with a disclosed conjugate or composition may allow lower doses of the other therapeutic agents and/or administration at less frequent intervals.
  • the conjugates or compositions of the present invention and the other active ingredients may be used in lower doses than when each is used singly.
  • the pharmaceutical compositions of the present invention include those that contain one or more other active ingredients, in addition to a conjugates of the present disclosure.
  • Anticancer agents include, but are not limited to, Abiraterone Acetate, Abitrexate (Methotrexate), Abraxane (Paclitaxel Albumin- stabilized Nanoparticle Formulation), ABVD, ABVE, ABVE-PC, AC, AC-T, Adcetris (Brentuximab Vedotin), ADE, Ado-Trastuzumab Emtansine, Adriamycin (Doxorubicin Hydrochloride), Adrucil (Fluorouracil), Afatinib Dimaleate, Afinitor (Everolimus), Aldara (Imiquimod), Aldesleukin, Alemtuzumab, Alimta (Pemetrexed Disodium), Aloxi (Palonosetron Hydrochloride), Ambochlorin (Chlorambucil), Aminolevulinic Acid, Anastrozole, Aprepitant, Aredia (Pamidron), Abidron, ABVE,
  • the anticancer agent may be a PBD dimer, calicheamicin, speromycin, tubulysin B, rhizoxin, dolastatin, didemnin B, camptothecin, CBI, temsirolimus, actinomycin D, epothilone B, taxol, cryptophycin, SN38, velcade, bruceantin, DAVLBH, DM1, Phyllanthoside, Alimta, T2 Toxin, MMC, vantalanib, vinorelbine, brefeldin, sunitinib, daunomycin, semaxanib, tarceva, iressa, irinotecan, LY- 541503, geldanomycin, gemcitabine, methotrexate, gleevec, topotecan, bleomycin, doxorubicin, cisplatin, N-mustards, etoposide, or 5-FU
  • an anticancer agent is an anthracycline. In certain embodiments, anticancer agent is a taxane. In certain embodiments, anticancer agent is gemcitabine. In certain embodiments, anticancer agent is doxorubicin. In certain embodiments, anticancer agent is docetaxel. In certain embodiments, anticancer agent is SN38. In certain embodiments, anticancer agent is monomethyl auristatin E. In certain embodiments, an anticancer agent is an alkylating agent, antimetabolite (folate antagonist, purine antagonist, pyrimidine antagonist), antibiotic, taxane, vinca alkaloid, or campothecin analogue. 7.
  • the conjugates may be prepared using the methods disclosed herein and routine modifications thereof, which will be apparent given the disclosure herein and methods well known in the art. Conventional and well-known synthetic methods may be used in addition to the teachings herein. The synthesis of typical compounds described herein may be accomplished as described in the following examples. If available, reagents and starting materials may be purchased commercially, e.g., from Sigma Aldrich or other chemical suppliers. [0323] It will be appreciated that where typical or preferred process conditions (i.e., reaction temperatures, times, mole ratios of reactants, solvents, pressures, etc.) are given, other process conditions can also be used unless otherwise stated.
  • process conditions i.e., reaction temperatures, times, mole ratios of reactants, solvents, pressures, etc.
  • Optimum reaction conditions may vary with the particular reactants or solvent used, but such conditions can be determined by one skilled in the art by routine optimization procedures.
  • conventional protecting groups may be necessary to prevent certain functional groups from undergoing undesired reactions.
  • Suitable protecting groups for various functional groups as well as suitable conditions for protecting and deprotecting particular functional groups are well known in the art. For example, numerous protecting groups are described in Wuts, P. G. M., Greene, T. W., & Greene, T. W. (2006). Greene's protective groups in organic synthesis. Hoboken, N.J., Wiley- Interscience, and references cited therein.
  • the conjugates of this disclosure may contain one or more chiral centers.
  • such conjugates can be prepared or isolated as pure stereoisomers, i.e., as individual enantiomers or diastereomers or as stereoisomer-enriched mixtures. All such stereoisomers (and enriched mixtures) are included within the scope of this disclosure, unless otherwise indicated. Pure stereoisomers (or enriched mixtures) may be prepared using, for example, optically active starting materials or stereoselective reagents well-known in the art. Alternatively, racemic mixtures of such conjugates can be separated using, for example, chiral column chromatography, chiral resolving agents, and the like. [0326] The starting materials for the following reactions are generally known compounds or can be prepared by known procedures or obvious modifications thereof.
  • Step-2 To a solution of compound 1.2 (1.0 g, 4.0 mmol, 1.0 eq.) in anhydrous DCM (30 mL) was added pyridine (0.9 g, 12 mmol, 3.0 eq.). The mixture was cooled in an ice bath. To this mixture was added a solution of p-nitrophenyl chloroformate (1.0 g, 5 mmol, 1.3 eq.) in DCM (5 mL) over two minutes.
  • Step-3 To a solution of compound-1.3 (138 mg, 0.33 mmol, 1.0 eq.), (4- aminophenyl)methanol (40.4 mg, 0.33 mmol, 1.0 eq.), and HOBt (111 mg.0.66, 2.0 eq) in DMF (2.0 mL) was added DIEA (85 mg, 0.66 mmol, 2.0 eq.) sequentially. The mixture was stirred at rt overnight and monitoring by LCMS. Upon the completion of the reaction, the mixture was loaded directly in C18 flash chromatography (25 g, Agela) with a stepwise gradient of acetonitrile in water (0-60% for 16 min; product eluted out at ⁇ 40% acetonitrile in water).
  • Step 5 To a solution of compound 1.5 (40 mg, 0.07 mmol, 1.0 eq.) and (2S)- N-((4S,5S)-1-((S)-2-((1R,2R)-3-(((1S,2R)-1-hydroxy-1-phenylpropan-2-yl)amino)-1-methoxy-2-methyl- 3-oxopropyl)pyrrolidin-1-yl)-3-methoxy-5-methyl-1-oxoheptan-4-yl)-N,3-dimethyl-2-((S)-3-methyl-2- (methylamino)butanamido)butanamide (50 mg, 0.07 mmol, 1.0 eq), and HOBt (27 mg, 0.14 mmol, 2.0 eq.; 80% pure) in DMF (1.0 mL) was added DIPEA (14 mg, 0.14 mmol, 2.0 eq.).
  • Step 6 To compound 1.6 in water from the above step was diluted with MeOH (3.0 mL). To the mixture was added LiOH (7 mg, 0.28 mmol, 4 eq.). The mixture was stirred at rt for 1 h and monitoring by LCMS. Upon the completion of the reaction, the mixture was partially concentrated to remove most of the MeOH and acidified to pH 3 with HCl (1 N) to observed a sticky solid. To the aqueous solution was extracted with EtOAc (10 mL) four times. The combined organic layers were dried with Na 2 SO 4 , filtered, and concentrated.
  • Gly(OMe)-TCO (2) A solution of trans-cyclooctene 1, glycine methyl ester, DIPEA, and HOBt in DCM is charged to a round bottom flask fitted with a magnetic stir bar. To the solution is added EDC and the resulting mixture is stirred for 1 h at ambient temperature. The starting material is observed to be consumed by HPLC. The reaction mixture is partitioned between ethyl acetate and citrate buffer (pH 4.5). The organic layer is then washed with citrate buffer (2x) followed by sodium bicarbonate (2x), and brine. The organic layer is dried over sodium sulfate, filtered, and the filtrate is concentrated under reduced pressure. The resulting residue is purified by flash chromatography to yield intermediate 2.
  • Gly(OFm)-TCO-N-Boc-spacelink carbamate (8) A solution of carbonate 7 and pyridine in DCM is charged to a round bottom flask fitted with a magnetic stir bar. To the solution is added N-Boc-N,N’- dimethyl-1,2-diaminoethane and the resulting mixture is stirred at ambient temperature. The starting material is observed to be consumed by HPLC. The reaction mixture is then partitioned between ethyl acetate and citrate buffer (pH 4.5). The organic layer is washed with citrate buffer (2x) followed by sodium bicarbonate (3x), and brine.
  • TCO-PBD (12). To a solution of SG3199 in DMF is added bis-NHS-TCO 11 and HOBt. The reaction mixture is stirred at ambient temperature protected from light until the starting material is consumed. To the reaction mixture is added lithium hydroxide (solution in water) and methanol and the resulting solution is stirred for additional time at ambient temperature. The reaction mixture is then concentrated under reduced pressure and the resulting residue is purified by reverse phase chromatography (10-100% MeCN/water with 0.1% ammonium formate) to yield the desired product Compound 5.
  • Example 6 TCO(ammonium)-exatecan conjugate (Compound 6) [0346] To a mixture of triphosgene (177 mg, 0.6 mmol) in THF (10 mL) was added (1R,6R,E)-6- hydroxy-1-methylcyclooct-4-ene-1-carboxylic acid (220 mg, 1.20 mmol) and DMAP (292 mg, 2.40 mmol). The mixture was stirred at room temperature for 30 min.
  • Example 7 TCO(PEG)-exatecan conjugate (Compound 7) [0348] A solution of 13-(2,2-dimethyl-4-oxo-3,8,11,14-tetraoxa-5-azahexadecan-16-yl) - 4,7,10,16,19,22-hexaoxa-13-azapentacosanedioic acid (42 mg, 60 ⁇ mol) in TEA:DCM (1:5) (5 mL) was stirred at 0 °C for 1 hr. The mixture was concentrated to give the crude Intermediate B.
  • Example 8 TCO(gly)-exatecan conjugate (Compound 8) [0349] To a solution of Intermediate A (65 mg, 100 ⁇ mol) and HOSU (18 mg, 150 ⁇ mol) in DMF (5 mL) was added DIEA (38 mg, 300 ⁇ mol). The mixture was stirred at 25 °C for 30 min. Then glycine (16 mg, 200 ⁇ mol) and NaHCO 3 (17 mg, 200 ⁇ mol) was added. The mixture was stirred at 25 °C for 5 hr. The mixture was concentrated and purified by Prep-HPLC (CH 3 CN/H 2 O with 0.01% formic acid) 0% to 70%) to give Compound 8 (32 mg, 45.2%).
  • Example 11 TCO-Mitomycin C (Compound 11) [0373] To a mixture of intermediate 3A (350 mg, 1.05 mmol), DIEA (345 mg, 2.67 mmol) and DMAP (109 mg, 890 ⁇ mol) in DMF (5.0 mL) was added a solution of intermediate 3 (400 mg, 890 ⁇ mol) in DMF (5.0 mL) at 0 °C. The mixture stirred at 20 °C for 12 hrs. Then to the reaction mixture was added TBAF (1 M, 4.45 mmol) at 0 °C and stirred at 20 °C for 2 hrs. LCMS showed a main peak with desired mass was detected.
  • the reaction mixture was diluted with ice water (100 mL), then extracted with DCM (100 mL * 4) and organic layers were dried over filtered and concentrated under reduced pressure to give a residue.
  • the aqueous phase was quenched by addition 1 M HCl 100 mL at 0 °C and NaClO solution 100 mL at 0 °C.
  • the residue was purified by prep-HPLC (Welch XB-C187 ⁇ m 110 ⁇ 250*50 mm; mobile phase: [water(0.01 mol/L NH 3 HCO 3 in H 2 O)-ACN]; B%: 10-30%-40 min. Retention time: 20 min, 20 mL/min). Compound 11 (102 mg, 20.8% yield) was obtained.
  • Example 12 TCO-(taurine)-Gemcitabine (Compound 12) [0376] To a mixture of intermediate 15 (200 mg, 422 ⁇ mol) and intermediate 15A (106 mg, 845 ⁇ mol) in DMF (2.0 mL) was added EDCI (162 mg, 845 ⁇ mol), HOBt (114 mg, 845 ⁇ mol) and DIEA (164 mg, 1.27 mmol) at 20 °C. The mixture stirred at 20 °C for 12 hrs. LCMS showed a main peak with desired mass was detected. The mixture was filtered and concentrated under reduced pressure.
  • the mixture was purified by prep-HPLC (column: YMC-Actus Triart C18150*30 mm*5 ⁇ m; mobile phase: [water(TFA)-ACN]; B%: 43%-63%, 10.5 min) and further purified by prep-HPLC (column: YMC-Actus Triart C18, 250*10 mm, 5 ⁇ m, 120 ⁇ ; mobile phase: [water-ACN]; B%: 30-60%-50 min. Retention time: 30min, 2 mL/min). Compound 16 (10.8 mg, 14.3% yield) was obtained.
  • Example 19 TCO-STINGa (Compound 19) [0391] To a solution of intermediate 2 (2.0 g, 10.8 mmol) in DCM (10 mL) was added DIEA (4.21 g, 32.5 mmol) and EDCI (4.16 g, 21.7 mmol) and DMAP (2.65 g, 21.7 mmol) and intermediate 6 (1.54 g, 13.0 mmol). The mixture was stirred at 25 °C for 16 hrs. TLC indicated intermediate2 was consumed completely and one new spot formed. The reaction mixture was partitioned between DCM (10 mL) and H 2 O (10 mL).
  • intermediate 7 (285 g, crude) which was carried forward as is.
  • General procedure for preparation of intermediate 8 [0406] To a solution of intermediate 7 (285 g, crude) in MeOH (2000 mL) was added KOH (42.5 g, 758 mmol) in H 2 O (1000 mL). The mixture was stirred at 25 °C for 1 hrs. LC-MS showed intermediate 7 was consumed completely and one main peak with desired mass was detected. The reaction mixture was concentrated under reduced pressure to remove MeOH. The residue was extracted with MTBE (5 L). The aqueous phase layers were diluted with sat. KHSO 4 (1L) aq.
  • TCO-Lurbinectedin (Compound 22).
  • Example 23 Anti-CD3-Fab-TCO Therapeutic Conjugate TCO-PEG3-NHS
  • Fab is prepared from OKT3 using a commercial kit (PierceTM Fab Preparation Kit #44985) according to the manufacturers protocol and purified by protein G resin (BioVision #6511-25). To the purified Fab is added 10 mM TCO-PEG3-NHS is prepared in DMSO. The two components are reacted at 3:1 drug to protein molar ratio at 25 ° C for 2 hours before it is dialyzed against PBS, pH 7.4 to remove excess TCO-PEG3-NHS compound from the protein component.
  • Example 24 anti-CD3 Fab – PEG3-TCO Conjugate Preparation
  • Fab of the anti-CD3 antibody 2C11 was synthesized by plasmid construction, HEK293 cell expression and purification.
  • the Fab-TCO conjugate was prepared by reacting TCO-PEG3-NHS (structure shown below, purchased from SiChem; catalog No. SC-8406) to primary amines on the Fab to form stable amide bonds.
  • Fab protein was dialyzed against PBS, pH 7.4 overnight with one buffer exchange at about 4 hours from the start.10 mM TCOt-PEG3-NHS was prepared in DMSO. The two components were reacted at 3:1 drug to protein molar ratio at 25 o C for 2 hours before it was dialyzed against PBS, pH 7.4 to remove excess TCO-PEG3-NHS compound from the protein component. LCMS analysis demonstrated the average loading of 1.9 TCO-PEG3 per Fab.
  • Biochemical Examples Biochemical Example 1 TLR7/8a (Gardiquimod); effect on proliferation of fresh murine splenocytes
  • Lymphocytes were isolated from spleens of C57BL/6 mice. Spleens were grinded and cells strained through a 70 ⁇ m cell strainer using DBPS. Red blood cells were lysed, and cells were washed with DPBS. Isolated lymphocytes were suspended in culture medium. Cells were plated at 50,000 cells/well in a 96-well plate at 90 ⁇ L/well, then incubated at 37°C, 5% CO 2 , 95% air and 100% relative humidity overnight.
  • IR inhibition rate
  • Fig.1 shows the results from an experiment with the highest concentration tested as 10 ⁇ g/mL.
  • Fig.2 shows a repeat of the experiment with TCO-gly- gardiquimod in the absence or presence of tetrazine up to 50 ⁇ g/mL concentrations.
  • TCO-gly- gardiquimod had no to minimal effects on cell viability over the various concentrations. Even at the highest dose (50 ⁇ g/mL) its activity was minimal. This suggests an effective attenuation of activity.
  • TCO-gly-gardiquimod Treatment with TCO-gly-gardiquimod in the presence of tetrazine led to a concentration- dependent increase in cell viability/proliferation rate.
  • concentrations over 5 ⁇ g/mL TCO-gly- gardiquimod in the presence of tetrazine displayed even greater activity on proliferation compared to unmodified gardiquimod, suggesting potentially superior activity compared to the unmodified drug.
  • Therapeutic support compositions as described herein can be prepared as described in WO2018/187740. Methods for testing and using the conjugates in combination with the support compositions can likewise be found in WO2018/187740.

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Abstract

La présente divulgation concerne de manière générale des conjugués de trans-cyclooctène pour l'administration bioorthogonale d'une charge utile à un emplacement ciblé chez un sujet. Les compositions et les méthodes ont des applications dans le traitement de cancers, de croissances tumorales et d'immunothérapie.
EP22821794.9A 2021-10-29 2022-10-31 Conjugués de trans-cyclooctène Pending EP4422693A1 (fr)

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