JP2019533017A - システイン改変抗体−毒素複合体及びその製造方法 - Google Patents
システイン改変抗体−毒素複合体及びその製造方法 Download PDFInfo
- Publication number
- JP2019533017A JP2019533017A JP2019540482A JP2019540482A JP2019533017A JP 2019533017 A JP2019533017 A JP 2019533017A JP 2019540482 A JP2019540482 A JP 2019540482A JP 2019540482 A JP2019540482 A JP 2019540482A JP 2019533017 A JP2019533017 A JP 2019533017A
- Authority
- JP
- Japan
- Prior art keywords
- antibody
- cysteine
- pab
- mmae
- tdc
- 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.)
- Granted
Links
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
- A61K47/68—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 antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment
-
- 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
- A61K47/68—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 antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment
- A61K47/6801—Drug-antibody or immunoglobulin conjugates defined by the pharmacologically or therapeutically active agent
- A61K47/6803—Drugs conjugated to an antibody or immunoglobulin, e.g. cisplatin-antibody conjugates
- A61K47/6811—Drugs conjugated to an antibody or immunoglobulin, e.g. cisplatin-antibody conjugates the drug being a protein or peptide, e.g. transferrin or bleomycin
- A61K47/6817—Toxins
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
-
- 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
- A61K47/68—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 antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment
- A61K47/6801—Drug-antibody or immunoglobulin conjugates defined by the pharmacologically or therapeutically active agent
- A61K47/6803—Drugs conjugated to an antibody or immunoglobulin, e.g. cisplatin-antibody conjugates
- A61K47/68031—Drugs conjugated to an antibody or immunoglobulin, e.g. cisplatin-antibody conjugates the drug being an auristatin
-
- 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
- A61K47/68—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 antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment
- A61K47/6801—Drug-antibody or immunoglobulin conjugates defined by the pharmacologically or therapeutically active agent
- A61K47/6803—Drugs conjugated to an antibody or immunoglobulin, e.g. cisplatin-antibody conjugates
- A61K47/6807—Drugs conjugated to an antibody or immunoglobulin, e.g. cisplatin-antibody conjugates the drug or compound being a sugar, nucleoside, nucleotide, nucleic acid, e.g. RNA antisense
- A61K47/6809—Antibiotics, e.g. antitumor antibiotics anthracyclins, adriamycin, doxorubicin or daunomycin
-
- 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
- A61K47/68—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 antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment
- A61K47/6835—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 antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment the modifying agent being an antibody or an immunoglobulin bearing at least one antigen-binding site
- A61K47/6849—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 antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment the modifying agent being an antibody or an immunoglobulin bearing at least one antigen-binding site the antibody targeting a receptor, a cell surface antigen or a cell surface determinant
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
- C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
- C07K16/28—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
- C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
- C07K16/28—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
- C07K16/2863—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants against receptors for growth factors, growth regulators
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
- C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
- C07K16/28—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
- C07K16/30—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants from tumour cells
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K2039/505—Medicinal preparations containing antigens or antibodies comprising antibodies
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/50—Immunoglobulins specific features characterized by immunoglobulin fragments
- C07K2317/52—Constant or Fc region; Isotype
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/50—Immunoglobulins specific features characterized by immunoglobulin fragments
- C07K2317/52—Constant or Fc region; Isotype
- C07K2317/522—CH1 domain
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/70—Immunoglobulins specific features characterized by effect upon binding to a cell or to an antigen
- C07K2317/73—Inducing cell death, e.g. apoptosis, necrosis or inhibition of cell proliferation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/90—Immunoglobulins specific features characterized by (pharmaco)kinetic aspects or by stability of the immunoglobulin
- C07K2317/92—Affinity (KD), association rate (Ka), dissociation rate (Kd) or EC50 value
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/90—Immunoglobulins specific features characterized by (pharmaco)kinetic aspects or by stability of the immunoglobulin
- C07K2317/94—Stability, e.g. half-life, pH, temperature or enzyme-resistance
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Immunology (AREA)
- General Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Organic Chemistry (AREA)
- Pharmacology & Pharmacy (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Molecular Biology (AREA)
- Epidemiology (AREA)
- Biochemistry (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Biophysics (AREA)
- Genetics & Genomics (AREA)
- Cell Biology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Toxicology (AREA)
- Peptides Or Proteins (AREA)
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
- Medicinal Preparation (AREA)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
- Saccharide Compounds (AREA)
Abstract
【選択図】 無し
Description
好ましくは、前記抗体の重鎖は、IgG1、IgG2、IgG3又はIgG4アイソタイプを含む。
好ましくは、前記システインはチオール基(−SH)を含む。
好ましくは、チオール基(−SH)は化学的に結合することができる
好ましくは、リンカーを介してシステイン挿入変異遊離チオール基に部位特異的結合する小分子高活性の細胞毒素は、MMAE、MMAF、PBD、SN−38、Dox及びそれらの誘導体を含むが、これらに限定されない。MMAE、MMAF、PBD、SN−38及びDoxの分子式は、
である。
>LC−Cys205ins−Kappa
TVAAPSVFIFPPSDEQLKSGTASVVCLLNNFYPREAKVQWKVDNALQSGNSQESVTEQDSKDSTYSLSSTLTLSKADYEKHKVYACEVTHQGLSSPCVTKSFNRGEC
GLSSPCVTKSFNにおけるCは部位特異的結合位置であって、mc−vc−PAB−payloadと部位特異的結合するものである。
SEQ ID NO:8 LC−Cys206ins軽鎖定常領域(Kappa)アミノ酸配列
>LC−Cys206ins−Kappa
TVAAPSVFIFPPSDEQLKSGTASVVCLLNNFYPREAKVQWKVDNALQSGNSQESVTEQDSKDSTYSLSSTLTLSKADYEKHKVYACEVTHQGLSSPVCTKSFNRGEC
GLSSPVCTKSFNにおけるCは部位特異的結合位置であって、mc−vc−PAB−payloadと部位特異的結合するものである。
SEQ ID NO:10 IgG1−Fc−Cys439ins重鎖定常領域(Fc)アミノ酸配列
>IgG1−Fc−Cys439ins
ASTKGPSVFPLAPSSKSTSGGTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSSGLYSLSSVVTVPSSSLGTQTYICNVNHKPSNTKVDKRVEPKSCDKTHTCPPCPAPELLGGPSVFLFPPKPKDTLMISRTPEVTCVVVDVSHEDPEVKFNWYVDGVEVHNAKTKPREEQYNSTYRVVSVLTVLHQDWLNGKEYKCKVSNKALPAPIEKTISKAKGQPREPQVYTLPPSRDELTKNQVSLTCLVKGFYPSDIAVEWESNGQPENNYKTTPPVLDSDGSFFLYSKLTVDKSRWQQGNVFSCSVMHEALHNHYTQKSLSCLSPGK
TQKSLSCLSPGKにおけるCは部位特異的結合位置であり、mc−vc−PAB−payloadと部位特異的結合するものである。
SEQ ID NO:12 LC−V205C軽鎖定常領域(Kappa)アミノ酸配列
>LC−V205C−Kappa
TVAAPSVFIFPPSDEQLKSGTASVVCLLNNFYPREAKVQWKVDNALQSGNSQESVTEQDSKDSTYSLSSTLTLSKADYEKHKVYACEVTHQGLSSPCTKSFNRGEC
GLSSPCTKSFNにおけるCは部位特異的結合位置であり、mc−vc−PAB−payloadと部位特異的結合するものである。
FreestyleTM 293−F(Invitrogen)懸濁細胞を用いて目的抗体を発現した。トランスフェクションの1日前、6×105個/mLの密度で細胞を300mL F17完全培地(FreestyleTM F17発現培地、Gibco社)を含む1L振盪フラスコに接種し、細胞培養シェーカーを用いて37℃、5%CO2、120rpmで一晩培養した。翌日、PEIで抗体発現プラスミドのトランスフェクションを行なった。ここで、プラスミド:PEIは2:1であった。トランスフェクションの翌日、2.5%(v/v)でTN1フィード培地を加え、引き続き4日培養した後、遠心分離して上澄みを収集した。
カラム:Proteomix(登録商標) HICBu‐NP5(5μm,4.6x35mm)
移動相:A:硫酸アンモニウム2M、pH7のリン酸塩緩衝液0.025M;B:pH7のリン酸塩緩衝液0.025M;C:100%イソプロパノール
緩衝液Aは平衡化、緩衝液B及び緩衝液Cは勾配溶出に用いられ、25℃、214nm及び280波長で検出した。
図1〜3に基づいて算出した部位特異的結合DARは1.6〜1.7であり、優れた化合物の均一性を示す。
図4〜6に基づいて算出した部位特異的結合DARは1.60−1.95であり、優れた化合物の均一性を示す。
図7〜8に基づいて算出した部位特異的結合DARは1.60−1.90であり、優れた化合物の均一性を示す。
RP−HPLCによる毒素と抗体との比DARを測定し、采用逆相疎水性高速液体クロマトグラフィーによりDTTで処理したサンプルを分析し、対応するピーク面積に基づいてDARを算出した。具体的な方法は以下の通りである。
カラム:Proteomix RP−1000(5μm, 4.6×100mm)
移動相:A:0.1%TFA水溶液;B:0.1%アセトニトリル溶液
移動相A及び移動相Bを用いて割合で勾配溶出を行い、80℃、214nm及び280波長で検出した。
図9に基づいて算出した部位特異的結合DARは1.82であり、優れた化合物の均一性を示す。
カラム:TSKgel SuperSW mAb HR(7.8mm×30cm)
移動相:硫酸ナトリウム0.1M、pH6.7のリン酸塩緩衝液0.1M
25℃、280nmで検出した。
図10−13に示すように、SEC−HPLCによりTDC抗体骨格4D3、4D3−LC−Cys205ins、4D3−LC−Cys206ins及び4D3−HC−Cys439insの凝集状況を検出した。サンプルを37℃で4週間保存した後、凝集体の含有量は基本的に変化していない。
用間接ELISA法により4E1−LC−Cys205ins−MVPM、4E1−LC−Cys206ins−MVPM、4E1−HC−Cys439ins−MVPM及び4E1のEGFRvIIIに対する相対親和性を比較した。具体的な方法は以下の通りである。
以下の実験によりTDC細胞毒性活性を測定した。即ち、TDCをそれぞれEGFRが過剰発現されるか又はEGFRVIIIが発現されるヒトの腫瘍細胞培地に加え、72時間培養した後、細胞生存率を測定した。細胞によるインビトロ試験により、細胞生存率、細胞毒性、及び本発明のTDC誘導アポトーシスを測定した。
4E1−LC−Cys205ins−mc−vc−PAB−MMAE TDC、4E1−LC−Cys206ins−mc−vc−PAB−MMAE TDC及び4E1−HC−Cys439ins−mc−vc−PAB−MMAE TDCは、U87−MG細胞毒性活性及び結合位置には一定の相関があり、439位插入変異TDCの活性は、205位及び206位挿入変異TDCよりもやや良く、TDCの活性は、親抗体の活性よりも顕著に良い。
4D3−LC−Cys205ins−mc−vc−PAB−MMAE TDC、4D3−LC−Cys206ins−mc−vc−PAB−MMAE TDC及び4D3−HC−Cys439ins−mc−vc−PAB−MMAE TDCは、膵臓がん細胞株BXPC−3に対して細胞毒性活性が相当し、439位插入変異TDCの活性が205位及び206位挿入変異TDCよりもやや良く、TDCの活性は親抗体の活性よりも顕著に良い。
一定量のADCサンプルを取り、ヒトIgGが除去されたヒト血漿に加え、ADCごとに2管繰り返し、37℃水浴中でそれぞれ0時間、72時間インキュベートした後、ADCサンプルを取り出し、各管にプロテインA(MabSelect SuReTM LX Lot:#10221479 GE、PBSで洗浄したもの)100ulを加え、縦型ミキサーで2時間振盪し、洗浄、溶出により、インキュベートされたADCを得た。特定の時間インキュベートされたADCサンプルに対してHIC−HPLC及びRP−HPLC検出を行い、サンプルの血漿安定性を判定した。
Claims (9)
- システイン改変抗体−毒素複合体であって、
前記抗体は、システイン位置特異的挿入抗体であり、前記システイン挿入位置は、kappa/λ軽鎖定常領域におけるKabat番号第205位、軽鎖定常領域におけるKabat番号第206、及びIgG抗体重鎖定常領域におけるKabat番号第439位のうちの1つ又は複数の部位を含む、ことを特徴とするシステイン改変抗体−毒素複合体。 - 前記システイン挿入位置のアミノ酸配列は、
LC−205ins:GLSSPCVTKSF、LC−206ins:GLSSPVCTKSF、及びHC−439ins:TQKSLSCLSPGKのうちの1つ又は複数の配列を含み、
前記Cは、目的抗体軽鎖の第205位若しくは第206位、又は重鎖の第439位に挿入されたシステインである、ことを特徴とする請求項1に記載のシステイン改変抗体−毒素複合体。 - 高活性の細胞毒素は、リンカーを介して挿入されたシステインの遊離チオール基に部位特異的結合し、リンカーと挿入されたシステインとが結合した抗体の軽鎖のアミノ酸配列はGLSSPCVTKSF及びGLSSPVCTKSFであり、リンカーと挿入されたシステインとが結合した抗体の重鎖のアミノ酸配列はTQKSLSCLSPGKであり、
前記Cは、目的抗体軽鎖の第205位若しくは第206位、又は重鎖の第439位に挿入されたシステインである、ことを特徴とする請求項1に記載のシステイン改変抗体−毒素複合体。 - 前記抗体の軽鎖は、kappa又はλアイソタイプを含む、ことを特徴とする請求項1に記載のシステイン改変抗体−毒素複合体。
- 前記抗体の重鎖は、IgG1、IgG2、IgG3又はIgG4アイソタイプを含む、ことを特徴とする請求項1に記載のシステイン改変抗体−毒素複合体。
- 前記システインは、チオール基を含む、ことを特徴とする請求項1に記載のシステイン改変抗体−毒素複合体。
- 前記チオール基は、化学的に結合することができる、ことを特徴とする請求項5に記載のシステイン改変抗体−毒素複合体。
- リンカーを介してシステイン挿入変異遊離チオール基に部位特異的結合する高活性細胞毒素は、MMAE、MMAF、PBD、SN−38又はDox及びそれらの誘導体からなる群より選択される、ことを特徴とする請求項1に記載のシステイン改変抗体−毒素複合体。
- 部位特異的結合のステップは、
まず、還元剤で抗体を還元することにより、抗体上の改変したシステイン残基上のマスキング基を除去し、陽イオン交換クロマトグラフィー又は、限外濾過及び液体交換などの方式によりDTT及びマスキング基を除去し、次いで、酸化剤で抗体を酸化して抗体鎖間のジスルフィド結合を再結合させ、最後に、リンカー−毒素を加えてシスチン残基上の遊離チオール基に結合させ、陽イオン交換クロマトグラフィー又は限外濾過及び液体交換などの方式により抗体分子に結合していないリンカー−毒素を除去することである、ことを特徴とする請求項1に記載のシステイン改変抗体−毒素複合体。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610876568 | 2016-10-08 | ||
CN201610876568.9 | 2016-10-08 | ||
PCT/CN2017/104706 WO2018064964A1 (zh) | 2016-10-08 | 2017-09-30 | 半胱氨酸改造的抗体-毒素偶联物及其制备方法 |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2019533017A true JP2019533017A (ja) | 2019-11-14 |
JP2019533017A5 JP2019533017A5 (ja) | 2020-08-20 |
JP6998386B2 JP6998386B2 (ja) | 2022-02-10 |
Family
ID=61533952
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2019540482A Active JP6998386B2 (ja) | 2016-10-08 | 2017-09-30 | システイン改変抗体-毒素複合体及びその製造方法 |
Country Status (11)
Country | Link |
---|---|
US (1) | US11484605B2 (ja) |
EP (1) | EP3524273B1 (ja) |
JP (1) | JP6998386B2 (ja) |
KR (2) | KR102480873B1 (ja) |
CN (3) | CN118846112A (ja) |
AU (1) | AU2017340314B2 (ja) |
CA (1) | CA3039559A1 (ja) |
IL (1) | IL265838B2 (ja) |
RU (1) | RU2762594C2 (ja) |
SG (1) | SG11201903084UA (ja) |
WO (1) | WO2018064964A1 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7153082B2 (ja) * | 2017-06-20 | 2022-10-13 | バイリ-バイオ(チェンドゥ)ファーマスーティカル シーオー.,エルティーディー. | システイン改変抗体-毒素複合体(tdc)の部位特異的結合サイトのスクリーニング |
CN110872339A (zh) * | 2018-08-30 | 2020-03-10 | 中国人民解放军军事科学院军事医学研究院 | 含有芳硝基的连接子、含连接子的抗体偶联药物及连接子的用途 |
WO2020233174A1 (zh) * | 2019-05-20 | 2020-11-26 | 烟台迈百瑞国际生物医药有限公司 | 一种抗体药物偶联物中间体的一锅法制备工艺 |
KR102720758B1 (ko) * | 2021-06-25 | 2024-10-22 | 강원대학교산학협력단 | 주류담배연기 노출 장치 |
AU2023370350A1 (en) * | 2022-10-26 | 2025-05-29 | Curon Biopharmaceutical (Shanghai) Co., Limited | Humanized l1cam antibody-drug conjugate |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008516896A (ja) * | 2004-09-23 | 2008-05-22 | ジェネンテック・インコーポレーテッド | システイン操作抗体および結合体 |
JP2013512927A (ja) * | 2009-12-04 | 2013-04-18 | ジェネンテック, インコーポレイテッド | 多重特異性抗体、抗体アナログ、組成物、及び方法 |
WO2015157595A1 (en) * | 2014-04-11 | 2015-10-15 | Medimmune, Llc | Conjugated compounds comprising cysteine-engineered antibodies |
WO2016131769A2 (en) * | 2015-02-16 | 2016-08-25 | Lonza Ltd | Antibodies |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2144628B1 (en) * | 2007-05-08 | 2012-10-17 | Genentech, Inc. | Cysteine engineered anti-muc16 antibodies and antibody drug conjugates |
BRPI0813514A2 (pt) * | 2007-07-16 | 2019-09-24 | Genentech Inc | anticorpos anti-cd79b humanizados e imunoconjugados e métodos de uso |
AU2008312457B2 (en) * | 2007-10-19 | 2014-04-17 | Genentech, Inc. | Cysteine engineered anti-TENB2 antibodies and antibody drug conjugates |
EP2657253B1 (en) * | 2008-01-31 | 2017-07-19 | Genentech, Inc. | Anti-CD79b antibodies and immunoconjugates and methods of use |
PL2953976T3 (pl) * | 2013-02-08 | 2021-11-02 | Novartis Ag | Specyficzne miejsca modyfikowania przeciwciał dla wytwarzania immunokoniugatów |
CN106467575B (zh) * | 2015-08-18 | 2020-07-31 | 四川百利药业有限责任公司 | 半胱氨酸改造的抗体-毒素偶联物 |
TWI812873B (zh) | 2015-11-30 | 2023-08-21 | 美商輝瑞股份有限公司 | 用於部位專一性接合之抗體和抗體片段 |
CN106866822A (zh) * | 2016-12-25 | 2017-06-20 | 四川百利药业有限责任公司 | 半胱氨酸改造的抗体‑毒素偶联物 |
-
2017
- 2017-09-29 CN CN202410922502.3A patent/CN118846112A/zh active Pending
- 2017-09-29 CN CN202311413663.1A patent/CN117398475A/zh active Pending
- 2017-09-29 CN CN201710910870.6A patent/CN107789630A/zh active Pending
- 2017-09-30 WO PCT/CN2017/104706 patent/WO2018064964A1/zh active IP Right Grant
- 2017-09-30 IL IL265838A patent/IL265838B2/en unknown
- 2017-09-30 AU AU2017340314A patent/AU2017340314B2/en active Active
- 2017-09-30 JP JP2019540482A patent/JP6998386B2/ja active Active
- 2017-09-30 SG SG11201903084UA patent/SG11201903084UA/en unknown
- 2017-09-30 RU RU2019113758A patent/RU2762594C2/ru active
- 2017-09-30 KR KR1020197013122A patent/KR102480873B1/ko active Active
- 2017-09-30 US US16/339,719 patent/US11484605B2/en active Active
- 2017-09-30 EP EP17857845.6A patent/EP3524273B1/en active Active
- 2017-09-30 CA CA3039559A patent/CA3039559A1/en active Pending
- 2017-09-30 KR KR1020227044769A patent/KR102579211B1/ko active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008516896A (ja) * | 2004-09-23 | 2008-05-22 | ジェネンテック・インコーポレーテッド | システイン操作抗体および結合体 |
JP2013512927A (ja) * | 2009-12-04 | 2013-04-18 | ジェネンテック, インコーポレイテッド | 多重特異性抗体、抗体アナログ、組成物、及び方法 |
WO2015157595A1 (en) * | 2014-04-11 | 2015-10-15 | Medimmune, Llc | Conjugated compounds comprising cysteine-engineered antibodies |
WO2016131769A2 (en) * | 2015-02-16 | 2016-08-25 | Lonza Ltd | Antibodies |
Non-Patent Citations (1)
Title |
---|
GRIFFIN, L. M. ET AL.: "Analysis of heavy and light chain sequences of conventional camelid antibodies from Camelus dromedar", J. IMMUNOL. METHODS, JPN6021015397, 2014, pages 405 - 35, ISSN: 0004492812 * |
Also Published As
Publication number | Publication date |
---|---|
IL265838B2 (en) | 2024-03-01 |
EP3524273A1 (en) | 2019-08-14 |
RU2019113758A (ru) | 2020-11-09 |
AU2017340314B2 (en) | 2021-04-29 |
IL265838A (en) | 2019-06-30 |
SG11201903084UA (en) | 2019-05-30 |
KR20190065374A (ko) | 2019-06-11 |
EP3524273B1 (en) | 2025-06-18 |
NZ752462A (en) | 2024-10-25 |
US11484605B2 (en) | 2022-11-01 |
CN118846112A (zh) | 2024-10-29 |
CN117398475A (zh) | 2024-01-16 |
US20200129635A1 (en) | 2020-04-30 |
IL265838B1 (en) | 2023-11-01 |
AU2017340314A1 (en) | 2019-05-02 |
JP6998386B2 (ja) | 2022-02-10 |
KR20230003663A (ko) | 2023-01-06 |
WO2018064964A1 (zh) | 2018-04-12 |
KR102579211B1 (ko) | 2023-09-15 |
CA3039559A1 (en) | 2018-04-12 |
RU2019113758A3 (ja) | 2020-12-25 |
RU2762594C2 (ru) | 2021-12-21 |
KR102480873B1 (ko) | 2022-12-26 |
EP3524273A4 (en) | 2020-07-15 |
CN107789630A (zh) | 2018-03-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP7224365B2 (ja) | 酸性自己安定化ジョイントを有する抗体薬物複合体 | |
JP7402807B2 (ja) | グリピカン3抗体およびそのコンジュゲート | |
AU646121B2 (en) | Acid-labile linker molecules | |
TWI819474B (zh) | 細胞毒性苯并二氮呯衍生物 | |
JP6998386B2 (ja) | システイン改変抗体-毒素複合体及びその製造方法 | |
CN110997673A (zh) | 用作免疫刺激剂Toll样受体7(TLR7)激动剂的6-氨基-7,9-二氢-8H-嘌呤-8-酮衍生物 | |
KR20180021176A (ko) | 시스테인 조작된 항체의 콘주게이트 | |
EP0560947A1 (en) | Tri- and tetra-valent monospecific antigen-binding proteins | |
JP2024503074A (ja) | カンプトテシン抗体-薬物コンジュゲート及びその使用方法 | |
JP7549631B2 (ja) | システイン改変抗体-毒素複合体(tdc)の部位特異的結合サイトのスクリーニング | |
CN106467575A (zh) | 半胱氨酸改造的抗体-毒素偶联物 | |
CN117100857B (zh) | 一种抗体金纳米笼载药系统、制备方法和用途 | |
CA3198230A1 (en) | Conjugate and use thereof | |
CN120187728A (zh) | 可用于偶联反应的化合物及其偶联物 | |
HK40005253A (en) | Cysteine modified antibody-drug conjugate and preparation method thereof | |
HK40035179A (en) | Screening of fixed-point coupling sites of cysteine-modified antibody-toxin conjugate (tdc) | |
TWI884535B (zh) | 抗cd33抗體和抗cd33抗體-藥物偶聯物及其用途 | |
WO2025151608A1 (en) | Connecting units for ligand-drug conjugates and methods of making and using thereof | |
WO2025031923A1 (en) | Imidazo[4,5-d]pyridazine compounds and conjugates thereof, their preparation, and their therapeutic applications | |
KR20250096894A (ko) | 고안정성 친수성 연결 유닛을 갖는 아우리스타틴 약물 및 이의 접합체 | |
KR20230127918A (ko) | 신규 항체 약물 접합체 | |
TW202515913A (zh) | Nectin-4抗體及抗體藥物結合物 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20200708 |
|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20200708 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20210416 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20210427 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20210630 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20211124 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20211220 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 6998386 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313113 |
|
S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |