CN108245481A - 微针及微针贴片 - Google Patents
微针及微针贴片 Download PDFInfo
- Publication number
- CN108245481A CN108245481A CN201810030840.0A CN201810030840A CN108245481A CN 108245481 A CN108245481 A CN 108245481A CN 201810030840 A CN201810030840 A CN 201810030840A CN 108245481 A CN108245481 A CN 108245481A
- Authority
- CN
- China
- Prior art keywords
- microneedle
- matrix
- mold
- dextran
- active ingredient
- 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
Links
- 229920002307 Dextran Polymers 0.000 claims abstract description 37
- 239000011159 matrix material Substances 0.000 claims abstract description 33
- TUSDEZXZIZRFGC-UHFFFAOYSA-N 1-O-galloyl-3,6-(R)-HHDP-beta-D-glucose Natural products OC1C(O2)COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC1C(O)C2OC(=O)C1=CC(O)=C(O)C(O)=C1 TUSDEZXZIZRFGC-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000001263 FEMA 3042 Substances 0.000 claims abstract description 19
- LRBQNJMCXXYXIU-PPKXGCFTSA-N Penta-digallate-beta-D-glucose Natural products OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-PPKXGCFTSA-N 0.000 claims abstract description 19
- 239000004480 active ingredient Substances 0.000 claims abstract description 19
- 229920002258 tannic acid Polymers 0.000 claims abstract description 19
- LRBQNJMCXXYXIU-NRMVVENXSA-N tannic acid Chemical compound OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-NRMVVENXSA-N 0.000 claims abstract description 19
- 229940033123 tannic acid Drugs 0.000 claims abstract description 19
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- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 34
- 239000000243 solution Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 10
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 claims description 9
- 108090000623 proteins and genes Proteins 0.000 claims description 9
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- -1 vaccine Substances 0.000 claims description 9
- 102000004190 Enzymes Human genes 0.000 claims description 8
- 108090000790 Enzymes Proteins 0.000 claims description 8
- GVJHHUAWPYXKBD-IEOSBIPESA-N α-tocopherol Chemical compound OC1=C(C)C(C)=C2O[C@@](CCC[C@H](C)CCC[C@H](C)CCCC(C)C)(C)CCC2=C1C GVJHHUAWPYXKBD-IEOSBIPESA-N 0.000 claims description 8
- 239000003963 antioxidant agent Substances 0.000 claims description 7
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- 239000000203 mixture Substances 0.000 claims description 7
- 229960005486 vaccine Drugs 0.000 claims description 7
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- NOESYZHRGYRDHS-UHFFFAOYSA-N insulin Chemical compound N1C(=O)C(NC(=O)C(CCC(N)=O)NC(=O)C(CCC(O)=O)NC(=O)C(C(C)C)NC(=O)C(NC(=O)CN)C(C)CC)CSSCC(C(NC(CO)C(=O)NC(CC(C)C)C(=O)NC(CC=2C=CC(O)=CC=2)C(=O)NC(CCC(N)=O)C(=O)NC(CC(C)C)C(=O)NC(CCC(O)=O)C(=O)NC(CC(N)=O)C(=O)NC(CC=2C=CC(O)=CC=2)C(=O)NC(CSSCC(NC(=O)C(C(C)C)NC(=O)C(CC(C)C)NC(=O)C(CC=2C=CC(O)=CC=2)NC(=O)C(CC(C)C)NC(=O)C(C)NC(=O)C(CCC(O)=O)NC(=O)C(C(C)C)NC(=O)C(CC(C)C)NC(=O)C(CC=2NC=NC=2)NC(=O)C(CO)NC(=O)CNC2=O)C(=O)NCC(=O)NC(CCC(O)=O)C(=O)NC(CCCNC(N)=N)C(=O)NCC(=O)NC(CC=3C=CC=CC=3)C(=O)NC(CC=3C=CC=CC=3)C(=O)NC(CC=3C=CC(O)=CC=3)C(=O)NC(C(C)O)C(=O)N3C(CCC3)C(=O)NC(CCCCN)C(=O)NC(C)C(O)=O)C(=O)NC(CC(N)=O)C(O)=O)=O)NC(=O)C(C(C)CC)NC(=O)C(CO)NC(=O)C(C(C)O)NC(=O)C1CSSCC2NC(=O)C(CC(C)C)NC(=O)C(NC(=O)C(CCC(N)=O)NC(=O)C(CC(N)=O)NC(=O)C(NC(=O)C(N)CC=1C=CC=CC=1)C(C)C)CC1=CN=CN1 NOESYZHRGYRDHS-UHFFFAOYSA-N 0.000 claims description 6
- 229930006000 Sucrose Natural products 0.000 claims description 5
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 102000004169 proteins and genes Human genes 0.000 claims description 5
- 239000005720 sucrose Substances 0.000 claims description 5
- GSDSWSVVBLHKDQ-JTQLQIEISA-N Levofloxacin Chemical compound C([C@@H](N1C2=C(C(C(C(O)=O)=C1)=O)C=C1F)C)OC2=C1N1CCN(C)CC1 GSDSWSVVBLHKDQ-JTQLQIEISA-N 0.000 claims description 4
- 229940087168 alpha tocopherol Drugs 0.000 claims description 4
- 230000003078 antioxidant effect Effects 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 4
- CZBZUDVBLSSABA-UHFFFAOYSA-N butylated hydroxyanisole Chemical compound COC1=CC=C(O)C(C(C)(C)C)=C1.COC1=CC=C(O)C=C1C(C)(C)C CZBZUDVBLSSABA-UHFFFAOYSA-N 0.000 claims description 4
- 239000008406 cosmetic ingredient Substances 0.000 claims description 4
- 229960003376 levofloxacin Drugs 0.000 claims description 4
- 229940126586 small molecule drug Drugs 0.000 claims description 4
- 229960000984 tocofersolan Drugs 0.000 claims description 4
- 239000002076 α-tocopherol Substances 0.000 claims description 4
- 235000004835 α-tocopherol Nutrition 0.000 claims description 4
- 102000004877 Insulin Human genes 0.000 claims description 3
- 108090001061 Insulin Proteins 0.000 claims description 3
- 230000003444 anaesthetic effect Effects 0.000 claims description 3
- 229940125396 insulin Drugs 0.000 claims description 3
- BSYNRYMUTXBXSQ-UHFFFAOYSA-N Aspirin Chemical compound CC(=O)OC1=CC=CC=C1C(O)=O BSYNRYMUTXBXSQ-UHFFFAOYSA-N 0.000 claims description 2
- 241000588724 Escherichia coli Species 0.000 claims description 2
- 229960001138 acetylsalicylic acid Drugs 0.000 claims description 2
- 230000001580 bacterial effect Effects 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 150000004676 glycans Chemical class 0.000 claims description 2
- 230000003834 intracellular effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- OGJPXUAPXNRGGI-UHFFFAOYSA-N norfloxacin Chemical compound C1=C2N(CC)C=C(C(O)=O)C(=O)C2=CC(F)=C1N1CCNCC1 OGJPXUAPXNRGGI-UHFFFAOYSA-N 0.000 claims description 2
- 229960001180 norfloxacin Drugs 0.000 claims description 2
- 229920001282 polysaccharide Polymers 0.000 claims description 2
- 239000005017 polysaccharide Substances 0.000 claims description 2
- 108090000765 processed proteins & peptides Proteins 0.000 claims description 2
- 229920001503 Glucan Polymers 0.000 claims 1
- 125000004122 cyclic group Chemical group 0.000 claims 1
- 210000003491 skin Anatomy 0.000 abstract description 14
- 229920000642 polymer Polymers 0.000 abstract description 6
- 241001391944 Commicarpus scandens Species 0.000 abstract description 5
- 210000000434 stratum corneum Anatomy 0.000 abstract description 5
- 229920001864 tannin Polymers 0.000 abstract description 5
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- 239000001648 tannin Substances 0.000 abstract description 5
- 239000013543 active substance Substances 0.000 abstract description 4
- 230000037317 transdermal delivery Effects 0.000 abstract description 3
- 238000013268 sustained release Methods 0.000 abstract description 2
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- 239000003292 glue Substances 0.000 abstract 1
- 230000000379 polymerizing effect Effects 0.000 abstract 1
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 31
- CXQXSVUQTKDNFP-UHFFFAOYSA-N octamethyltrisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C CXQXSVUQTKDNFP-UHFFFAOYSA-N 0.000 description 27
- 238000004987 plasma desorption mass spectroscopy Methods 0.000 description 27
- 239000000843 powder Substances 0.000 description 10
- 229910001220 stainless steel Inorganic materials 0.000 description 8
- 239000010935 stainless steel Substances 0.000 description 8
- MYSWGUAQZAJSOK-UHFFFAOYSA-N ciprofloxacin Chemical compound C12=CC(N3CCNCC3)=C(F)C=C2C(=O)C(C(=O)O)=CN1C1CC1 MYSWGUAQZAJSOK-UHFFFAOYSA-N 0.000 description 6
- 239000003814 drug Substances 0.000 description 6
- 229940079593 drug Drugs 0.000 description 5
- 239000011259 mixed solution Substances 0.000 description 5
- 229910021642 ultra pure water Inorganic materials 0.000 description 5
- 239000012498 ultrapure water Substances 0.000 description 5
- 239000004322 Butylated hydroxytoluene Substances 0.000 description 4
- 235000010354 butylated hydroxytoluene Nutrition 0.000 description 4
- 229940095259 butylated hydroxytoluene Drugs 0.000 description 4
- 229960003405 ciprofloxacin Drugs 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
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- 210000004207 dermis Anatomy 0.000 description 2
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- 239000007924 injection Substances 0.000 description 2
- 238000013271 transdermal drug delivery Methods 0.000 description 2
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 1
- 239000004255 Butylated hydroxyanisole Substances 0.000 description 1
- 229920000832 Cutin Polymers 0.000 description 1
- 230000037374 absorbed through the skin Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
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- 230000004888 barrier function Effects 0.000 description 1
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- 235000019282 butylated hydroxyanisole Nutrition 0.000 description 1
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- 238000002716 delivery method Methods 0.000 description 1
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- 239000003193 general anesthetic agent Substances 0.000 description 1
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- 125000002791 glucosyl group Chemical group C1([C@H](O)[C@@H](O)[C@H](O)[C@H](O1)CO)* 0.000 description 1
- UQEAIHBTYFGYIE-UHFFFAOYSA-N hexamethyldisiloxane Polymers C[Si](C)(C)O[Si](C)(C)C UQEAIHBTYFGYIE-UHFFFAOYSA-N 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
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- CQIOFKRONDXZJC-UHFFFAOYSA-N n-methylideneprop-2-enamide Chemical compound C=CC(=O)N=C CQIOFKRONDXZJC-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
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- A61M37/0015—Other apparatus for introducing media into the body; Percutany, i.e. introducing medicines into the body by diffusion through the skin by using microneedles
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- A61K31/045—Hydroxy compounds, e.g. alcohols; Salts thereof, e.g. alcoholates
- A61K31/05—Phenols
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- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
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- A61K31/33—Heterocyclic compounds
- A61K31/335—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin
- A61K31/35—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having six-membered rings with one oxygen as the only ring hetero atom
- A61K31/352—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having six-membered rings with one oxygen as the only ring hetero atom condensed with carbocyclic rings, e.g. methantheline
- A61K31/353—3,4-Dihydrobenzopyrans, e.g. chroman, catechin
- A61K31/355—Tocopherols, e.g. vitamin E
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- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/495—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
- A61K31/496—Non-condensed piperazines containing further heterocyclic rings, e.g. rifampin, thiothixene or sparfloxacin
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- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/535—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with at least one nitrogen and one oxygen as the ring hetero atoms, e.g. 1,2-oxazines
- A61K31/5375—1,4-Oxazines, e.g. morpholine
- A61K31/5383—1,4-Oxazines, e.g. morpholine ortho- or peri-condensed with heterocyclic ring systems
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- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/60—Salicylic acid; Derivatives thereof
- A61K31/612—Salicylic acid; Derivatives thereof having the hydroxy group in position 2 esterified, e.g. salicylsulfuric acid
- A61K31/616—Salicylic acid; Derivatives thereof having the hydroxy group in position 2 esterified, e.g. salicylsulfuric acid by carboxylic acids, e.g. acetylsalicylic acid
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- 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
- A61K47/06—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
- A61K47/26—Carbohydrates, e.g. sugar alcohols, amino sugars, nucleic acids, mono-, di- or oligo-saccharides; Derivatives thereof, e.g. polysorbates, sorbitan fatty acid esters or glycyrrhizin
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- A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
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- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
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- A61K8/60—Sugars; Derivatives thereof
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- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/0012—Galenical forms characterised by the site of application
- A61K9/0019—Injectable compositions; Intramuscular, intravenous, arterial, subcutaneous administration; Compositions to be administered through the skin in an invasive manner
- A61K9/0021—Intradermal administration, e.g. through microneedle arrays, needleless injectors
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- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/80—Process related aspects concerning the preparation of the cosmetic composition or the storage or application thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M37/00—Other apparatus for introducing media into the body; Percutany, i.e. introducing medicines into the body by diffusion through the skin
- A61M37/0015—Other apparatus for introducing media into the body; Percutany, i.e. introducing medicines into the body by diffusion through the skin by using microneedles
- A61M2037/0046—Solid microneedles
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M37/00—Other apparatus for introducing media into the body; Percutany, i.e. introducing medicines into the body by diffusion through the skin
- A61M37/0015—Other apparatus for introducing media into the body; Percutany, i.e. introducing medicines into the body by diffusion through the skin by using microneedles
- A61M2037/0053—Methods for producing microneedles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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Abstract
本发明涉及一种微针和微针贴片,所述微针包括微针形状的基质和包埋于基质中的活性成分,所述基质为葡聚糖与单宁酸聚合而成的水凝胶,所述活性成分为具有医疗或美容功效的物质,将贴片敷于皮肤上时,经过拇指的短暂按压,能够将微针插入皮肤中之后提供所述治疗活性成分的持续释放。本发明的微针及微针贴片,在无高度的熟练或痛症的情况下,可有效地进行药理活性物质的经皮传递。葡聚糖和单宁聚合物为网络结构,具有更强的硬度和韧性,所制成的微针不易折断,更易于穿透皮肤角质层。
Description
技术领域
本发明涉及微针,更详细地,涉及将生物来源的无毒可生物降解的具有生物相容性的葡聚糖用于药学、医学或美容功效的活性物质的经皮给药的微针及微针贴片。
背景技术
常见的给药方式主要有口服给药和注射给药。口服给药是最方便的一种给药方式,但由于胃内某些水解酶和肝脏首过代谢,对于一些蛋白质类药物不能达到治疗效果。注射给药需要高度熟练专业技术的医师,疼痛不安全,并且会产生尖锐的医疗废物。
经皮给药(transdermal drug delivery)为近年来受到瞩目的一种给药方式。利用直径和高度限于数十或数百微米的微针装置穿过作为经皮药传递的主要屏障层的皮肤的角质层,形成贯穿毛皮部的许多微通道,通过这些微通道,充分量的药物可到达表皮层或真皮层,之后药物通过血管和淋巴腺被吸收。其能够利用非侵入性的给药方式,让药物或疫苗通过皮肤吸收而发挥药效。皮肤中水解酶活性较低,可以避免蛋白与多胺类药物的失活。
作为其它应用,上述多个微针也用于美容目的。例如在微针上涂覆上述美容生理活性物质后,通过利用上述多个微针在皮肤内形成的多个微通道来经皮传递。
上述微针是由葡聚糖改性后制成,葡聚糖是由重组大肠杆菌产胞内酶经细胞破碎后得到的酶液再催化蔗糖产生,生物来源的葡聚糖具有无毒、良好的生物相容性和生物可降解性,不会引起生物组织体免疫反应,是一种理想的微针及微针贴片的原料。葡聚糖聚合物微针在活的皮肤层中降解后,所述活性成分被逐渐释放。
然而,当微针及微针贴片特别用于传输医药活性成分或疫苗活性成分时,如何控制医药活性成分或疫苗活性成分的携带量就变得相当重要。而且,葡聚糖虽然有良好的生物相容性和生物可降解性,但是由于其硬度和韧性不够,作为微针的材质使用,常常易折断,不易刺入皮肤。而且如何有效控制微针贴片中医药活性成分或疫苗活性成分的携带量也是一个难题,现有的工艺方法仍有改进的必要。
此外,现有技术中,往往使用N,N-亚甲基丙烯酰胺、过氧化二异丙苯等作为交联剂,而此类化学物质在人体中不能降解,对细胞有害。
发明内容
本发明的目的在于提供一种基于葡聚糖和单宁聚合物水凝胶的微针及微针贴片,该微针及微针贴片可在无高度的熟练并不产生疼痛感的情况下,有效地进行药学或美容物质的经皮传递,使用方便,并且,葡聚糖和单宁聚合物相比于葡聚糖,其硬度和韧性都更强,所制成的微针不易折断,更易于穿透皮肤角质层。
为达成前述目的,本发明提供一种微针,所述微针包括微针形状的基质和包埋于基质中的活性成分,所述基质为葡聚糖与单宁酸聚合而成的水凝胶,所述活性成分为具有医疗或美容功效的物质。
单宁酸的结构为单宁酸是一种植物提取物,也具有生物相容性和生物可降解性,葡聚糖和单宁聚合物为网络结构,具有更强的硬度和韧性,使微针能穿透皮肤角质层而不易折断。
优选的,所述活性成分为小分子药物、蛋白质、肽、基因、抗体、麻醉剂、胰岛素、疫苗、多糖类或美容成分。
优选的,所述小分子药物为环丙沙星、阿司匹林、左氧氟沙星或诺氟沙星。
优选的,所述的葡聚糖每个葡萄糖残基含有三个羟基,其分子式为
优选的,所述的葡聚糖由细菌产酶催化蔗糖产生。
优选的,所述的葡聚糖是由重组大肠杆菌产胞内酶经细胞破碎后得到的酶液再催化蔗糖产生的。
优选的,所述的葡聚糖分子量大于等于5000。
所述的微针形基质,其表面的针密度为2~100个/cm2。
优选的,所述的微针形基质,其表面的针的宽度为20μm~1000μm,高度为20μm~1000μm。
优选的,所述的基质中还包含有抗氧化剂。
优选的,所述的抗氧化剂为丁基羟基甲苯、丁基羟基苯甲醚或α-生育酚中的一种或多种。
优选的,所述的抗氧化剂在所述微针的干燥尖端中的质量分数为小于等于3%。
优选的,所述的抗氧化剂在所述微针的干燥尖端中的质量分数为0.03~2%。
本发明还提供一种基于上述微针的微针贴片,所述的微针贴片包括基板和形成于基板上的所述微针。
由蔗糖催化形成的可溶性葡聚糖本身具有较大的粘性,可以代替化学胶黏剂将微针与通气性医用纱布基板通过低温冷轧粘合在一起。
将贴片敷于皮肤上时,经过拇指的短暂按压,能够将微针插入皮肤中之后提供所述治疗活性成分的持续释放。
本发明还提供一种上述微针的制作方法,其包括以下步骤:
(1)将葡聚糖配置成终浓度为10~30g/L的水溶液,之后向葡聚糖的水溶液中加入单宁酸,使得单宁酸的终浓度为2~5g/L,于20~25℃混合反应20~60min,得到基质溶液;
(2)向所述基质溶液中加入活性成分,使得所述活性成分的质量分数为30%~65%;
(3)将基质溶液涂敷于具有用于成型微针的腔阵列的模具上;
(4)对涂覆有基质溶液的所述模具进行干燥后,将干燥成型的微针与所述模具分离。
优选的,步骤(3)所述模具的制备方法包括如下步骤:
(3-1)制备包含多个锥形凸起的金属阳模;
(3-2)将上述金属阳模按压在成型的聚二甲基硅氧烷(polydimethylsiloxane,PDMS)模块的平整表面,使得所述锥形凸起刺入所述聚二甲基硅氧烷,形成表面带有锥形凹陷的聚二甲基硅氧烷阴模,所述阴模即为所述模具。所述的聚二甲基硅氧烷模块可以是任意带有平整表面的立体块状。
优选的,步骤(4)所述的干燥温度为55~60℃。
本发明的有益效果在于:
本发明的微针及微针贴片,在无高度的熟练或痛症的情况下,可有效地进行药理活性物质的经皮传递。葡聚糖和单宁聚合物为网络结构,具有更强的硬度和韧性,所制成的微针不易折断,更易于穿透皮肤角质层。
附图说明
图1是本发明所述的基质结构的示意图。
图2是本发明实施例2的制备方法过程示意图,其中1是金属阳模,2是PDMS模具,3是所述水凝胶基质。
图3是所述微针贴片的剖视图。图中黑点代表所述活性成分。
图4是微针贴片经过按压透过皮肤角质层及在真皮中释放有效活性因子的示意图。
具体实施方式
实施例1
(1)去离子超纯水溶解干燥并纯化后的葡聚糖粉末(分子量5000)至终浓度为30g/L,加入单宁酸粉末至终浓度为2g/L,旋涡混合器上快速混匀,于20℃反应20min,得到基质溶液。
(2)向所述基质溶液中加入环丙沙星,使得环丙沙星的质量分数为30%。
(3)将步骤(2)得到的混合液迅速用注射器或毛细管分配器注入PDMS模具的微小凹陷中。PDMS模具上的凹陷为锥形,其密度为100个/cm2,每个凹陷的宽度为20μm,深度为100μm。
(4)将模具整体放入烘箱内,于60℃干燥4小时。
(5)轻轻将成型的微针从模具的微小凹陷中取出。
实施例2
首先采用如下方法制备PDMS模具:
首先制备包含多个锥形凸起的不锈钢阳模,锥形凸起的密度为2个/cm2,每个锥形凸起的宽度为200μm(锥形底部),深度为20μm。将不锈钢阳模按压在成型的PDMS方块的平整表面,使得锥形凸起刺入PDMS,形成锥形凹陷。此时该PDMS方块即为PDMS模具。
(1)去离子超纯水溶解干燥并纯化后的葡聚糖粉末(分子量9000)至终浓度为10g/L,加入单宁酸粉末至终浓度为3g/L,旋涡混合器上快速混匀,于23℃反应30min,得到基质溶液。
(2)向所述基质溶液中加入功能性基因,使得功能性基因的质量分数为40%,加入丁基羟基甲苯,使得丁基羟基甲苯占葡聚糖与单宁酸总干质量的0.01%。
(3)将步骤(2)得到的混合液迅速用注射器或毛细管分配器注入PDMS模具的微小凹陷中。
(4)将模具整体放入烘箱内,于55℃干燥5小时。
实施例3
首先采用如下方法制备PDMS模具:
首先制备包含多个锥形凸起的不锈钢阳模,锥形凸起的密度为50个/cm2,每个锥形凸起的宽度为1000μm(锥形底部),深度为1000μm。将不锈钢阳模按压在成型的PDMS方块的平整表面,使得锥形凸起刺入PDMS,形成锥形凹陷。此时该PDMS方块即为PDMS模具。
(1)去离子超纯水溶解干燥并纯化后的葡聚糖粉末(分子量10000)至终浓度为20g/L,加入单宁酸粉末至终浓度为4g/L,旋涡混合器上快速混匀,于25℃反应60min,得到基质溶液。
(2)向所述基质溶液中加入左氧氟沙星,使得左氧氟沙星的质量分数为65%,加入丁基羟基苯甲醚和α-生育酚,使得丁基羟基苯甲醚和α-生育酚的总质量占葡聚糖与单宁酸总干质量的0.03%。
(3)将步骤(2)得到的混合液迅速用注射器或毛细管分配器注入PDMS模具的微小凹陷中。
(4)将模具整体放入烘箱内,于60℃干燥4小时。
实施例4
首先采用如下方法制备PDMS模具:
首先制备包含多个锥形凸起的不锈钢阳模,锥形凸起的密度为70个/cm2,每个锥形凸起的宽度为500μm(锥形底部),深度为500μm。将不锈钢阳模按压在成型的PDMS方块的平整表面,使得锥形凸起刺入PDMS,形成锥形凹陷。此时该PDMS方块即为PDMS模具。
(1)去离子超纯水溶解干燥并纯化后的葡聚糖粉末(分子量50000)至终浓度为25g/L,加入单宁酸粉末至终浓度为5g/L,旋涡混合器上快速混匀,于22℃反应40min,得到基质溶液。
(2)向所述基质溶液中加入美容成分,使得美容成分的质量分数为45%,加入丁基羟基甲苯,使得丁基羟基甲苯质量占葡聚糖与单宁酸总干质量的1%。
(3)将步骤(2)得到的混合液迅速用注射器或毛细管分配器注入PDMS模具的微小凹陷中。
(4)将模具整体放入烘箱内,于60℃干燥4小时。
实施例5
首先采用如下方法制备PDMS模具:
首先制备包含多个锥形凸起的不锈钢阳模,锥形凸起的密度为10个/cm2,每个锥形凸起的宽度为10μm(锥形底部),深度为300μm。将不锈钢阳模按压在成型的PDMS方块的平整表面,使得锥形凸起刺入PDMS,形成锥形凹陷。此时该PDMS方块即为PDMS模具。
(1)去离子超纯水溶解干燥并纯化后的葡聚糖粉末(分子量150000)至终浓度为30g/L,加入单宁酸粉末至终浓度为5g/L,旋涡混合器上快速混匀,于20℃反应50min,得到基质溶液。
(2)向所述基质溶液中加入麻醉剂,使得麻醉剂的质量分数为30%,加入丁基羟基甲苯,使得丁基羟基甲苯质量占葡聚糖与单宁酸总干质量的0.1%。
(3)将步骤(2)得到的混合液迅速用注射器或毛细管分配器注入PDMS模具的微小凹陷中。
(4)将模具整体放入烘箱内,于60℃干燥4小时。
实施例6
实施例6与实施例5的区别仅在于:
步骤(1)中选择的葡聚糖分子量为500000,步骤(2)加入的活性成分为蛋白质,其质量分数为50%;步骤(3)丁基羟基甲苯质量占葡聚糖与单宁酸总干质量的0.5%。
实施例7
实施例7与实施例5的区别仅在于:
步骤(1)中选择的葡聚糖分子量为100000,步骤(2)加入的活性成分为胰岛素,其质量分数为65%;步骤(3)丁基羟基甲苯质量占葡聚糖与单宁酸总干质量的2%。步骤(3)改以刮刀式涂布法涂布基质溶液到模具的多个微小凹陷中。
实施例8
实施例8与实施例5的区别仅在于:
步骤(1)中选择的葡聚糖分子量为10000,步骤(2)加入的活性成分为疫苗;步骤(3)丁基羟基甲苯质量占葡聚糖与单宁酸总干质量的3%。
实施例9
微针贴片的制备
采用实施例1的步骤,在步骤(4)干燥前,使用手指压力将贴片基板施加在模具的表面上,使得微针粘附于基板表面,然后再进行步骤(4)的干燥,干燥后,通过基板轻轻将成型的微针从模具的微小凹陷中取出。
Claims (10)
1.一种微针,其特征在于,包括微针形状的基质和包埋于基质中的活性成分,所述基质为葡聚糖与单宁酸聚合而成的水凝胶,所述活性成分为具有医疗或美容功效的物质;优选的所述活性成分为小分子药物、蛋白质、肽、基因、抗体、麻醉剂、胰岛素、疫苗、多糖类或美容成分;优选的所述小分子药物为环丙沙星、阿司匹林、左氧氟沙星或诺氟沙星。
2.根据权利要求1所述的微针,其特征在于,所述的葡聚糖由细菌产酶催化蔗糖产生;优选的,所述的葡聚糖是由重组大肠杆菌产胞内酶经细胞破碎后得到的酶液再催化蔗糖产生的。
3.根据权利要求1所述的微针,其特征在于,所述的葡聚糖分子量大于等于5000。
4.根据权利要求1所述的微针,其特征在于,所述的微针形基质表面的针密度为2~100个/cm2,宽度为20μm~1000μm,高度为20μm~1000μm。
5.根据权利要求1所述的微针,其特征在于,所述的基质中还包含有抗氧化剂;优选的抗氧化剂为丁基羟基甲苯、丁基羟基苯甲醚或α-生育酚中的一种或多种。
6.根据权利要求5所述的微针,其特征在于,所述的抗氧化剂在所述微针的干燥尖端中的质量分数为小于等于3%;优选的质量分数为0.03~2%。
7.一种微针贴片,其特征在于,所述的微针贴片包括基板和形成于基板上的权利要求1-6任一所述微针。
8.一种权利要求1-6任一所述微针的制作方法,其包括以下步骤:
(1)将葡聚糖配置成终浓度为10~30g/L的水溶液,之后向葡聚糖的水溶液中加入单宁酸,使得单宁酸的终浓度为2~5g/L,于20~25℃混合反应20~60min,得到基质溶液;
(2)向所述基质溶液中加入活性成分,使得所述活性成分的质量分数为30%~65%;
(3)将基质溶液涂敷于具有用于成型微针的腔阵列的模具上;
(4)对涂覆有基质溶液的所述模具进行干燥后,将干燥成型的微针与所述模具分离。
9.根据权利要求8所述的方法,其特征在于,步骤(3)所述模具的制备方法包括如下步骤:
(3-1)制备包含多个锥形凸起的金属阳模;
(3-2)将上述金属阳模按压在成型的聚二甲基硅氧烷模块的平整表面,使得所述锥形凸起刺入所述聚二甲基硅氧烷,形成表面带有锥形凹陷的聚二甲基硅氧烷阴模,所述阴模即为所述模具。
10.根据权利要求8所述的方法,其特征在于,步骤(4)所述的干燥温度为55~60℃。
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