WO2013113514A1 - Matrix zur zellbesiedelung - Google Patents
Matrix zur zellbesiedelung Download PDFInfo
- Publication number
- WO2013113514A1 WO2013113514A1 PCT/EP2013/000324 EP2013000324W WO2013113514A1 WO 2013113514 A1 WO2013113514 A1 WO 2013113514A1 EP 2013000324 W EP2013000324 W EP 2013000324W WO 2013113514 A1 WO2013113514 A1 WO 2013113514A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- matrix
- mixture
- polymers
- layer
- coating
- 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.)
- Ceased
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/70—Web, sheet or filament bases ; Films; Fibres of the matrix type containing drug
- A61K9/7007—Drug-containing films, membranes or sheets
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K35/00—Medicinal preparations containing materials or reaction products thereof with undetermined constitution
- A61K35/12—Materials from mammals; Compositions comprising non-specified tissues or cells; Compositions comprising non-embryonic stem cells; Genetically modified cells
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/28—Materials for coating prostheses
- A61L27/34—Macromolecular materials
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/36—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix
- A61L27/38—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix containing added animal cells
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/50—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
- A61L27/56—Porous materials, e.g. foams or sponges
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/50—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
- A61L27/58—Materials at least partially resorbable by the body
Definitions
- the present application relates to porous matrixes for cell colonization for therapeutic or diagnostic purposes.
- Cell implants based on porous matrices of biocompatible polymers are known from WO 2004/108810 AI.
- the pores are cross-linked and serve as a template for the location of cells in vivo (eg, therapeutically) or in vitro (eg, diagnostically).
- a bioresorbable matrix can serve for the temporary localization of the graft.
- the invention therefore sets itself the goal of achieving an improvement in the clinical performance of the template.
- the invention proposes to provide on one side of the usually disc-shaped template a surface with less than 20% of the average pore content of the other side (s).
- This asymmetric structure allows the template to be placed in the body so that the implanted vital cells stay in it longer.
- the invention provides methods of making porous bioresorbable matrices, initially forming a polymer layer without a pore former, followed by coating a mixture of at least two polymers, a solvent for one of the polymers, and a water-soluble pore former, followed by evaporation of the solvent and then water to remove the pore-forming agent. Between these last two steps, in one variant, pressurization for compacting may still take place. Both methods lead to highly porous polymer matrix disks, but one side of which has a pore-free or at least low-pore membrane. Despite this membrane, the supply of the cells in use in the case of the application is sufficient, the However, loss rates due to emigration are considerably reduced. If, in one variant, such a template serves as connective tissue support, the continuous polymer layer can have sufficient hold for z. B. Provide suture for fixation of the template.
- the porous matrix is hydrophilic, e.g. B. coated with (meth) acrylic acid polymer. This is followed by a plasma coating step followed by a plasma-free
- Coating step whereby the required layer thicknesses of more than one micrometer can be achieved.
- matrices are provided for colonization with functional cells, for example hepatocytes and / or Langerhans' islet cells.
- functional cells for example hepatocytes and / or Langerhans' islet cells.
- Such biochemical function cells attach to the inner walls of the pores of the foamy matrix (attachment rates over 80% or, suitably coated, over 95%) and can be transplanted with the matrix into mesothelial pockets, ideally the cell donor itself In this case, no rejection reaction takes place, but only a comparatively mild, for the therapeutic process favorable foreign body stimulus is exercised.
- the matrix becomes vascularized and the implanted cells no longer rely on diffusive supply.
- the matrices are placed so that the low-pore (or -free) side is inside and the pore-rich side is outward, through the rate of loss To keep brain drainage low.
- a gradual dissolution of part of the degradable matrix occurs (within 3-4 months, or at least 2 and / or less than 7 months), thereby affecting the physiological milieu in a manner which is also conducive to therapeutic success. It is useful if a portion of the polymer mixture erodes more slowly (ratio of degradation times at least 5) and the structural cohesion longer time, z. B. 2.5-3 years (or at least 2 and / or less than 5 years) guaranteed.
- Such polymers are useful based on -hydroxy- carboxylic acids such as lactic acid and / or glycolic acid, eg. PLA or PLGA. Manufacturers of such polymers approved for use in the human body indicate the nominal degradation times that are relevant here.
- coated matrices namely those which in a combined PECVD / CVD process are first plasma-coated with a thin (eg 20-30 nm) PAA layer and subsequently with a thicker PAA layer (eg 20-30 pm) without plasma exposure.
- This upper layer forms a crystalline, hydrophilic layer.
- Particle size distribution mixed mixed with a solution of one of the polymers in chloroform and then added to the already prepared polymer layer.
- the solvent evaporates at slightly elevated temperature (45 ° C-65 ° C) and this can then be compacted if desired by applying pressure. Subsequently, the compact is watered to provide the desired porosity by removing the salt. However, the initially produced polymer layer remains pore-free. Depending on the application, the thickness of the low-pore layer can be adjusted by the amount and concentration of the initial solution.
- the resulting membrane has a thickness of about 10-20 pm, in the latter case about 0.5-1 mm.
- the saline particles of the mixture to be coated are somewhat coarser (median at 350-370 pm) than the polymer particles (median of the slower degradable polymer between 210 pm and 230 pm, that of the faster degradable polymer between 150 pm and 170 pm).
- the distribution widths (5% / 95%) are similar, namely about ⁇ 85-95 pm for salt or polymer in total.
- the distribution form can be bi- or trimodal.
- the composition of the layer mixture is about 96% salt, 1-1.5% solid polymer and another about 3-5% dissolved polymer, wherein the volume fractions of solids and liquid are about the same. Overall, the proportion of the rapidly degradable polymer is only about 5-20% of the polymer.
- the total thickness of the pore-forming layer is 5-6 mm.
- the salt can be chosen a little coarser (median about 400-420 pm).
- the total thickness of the pore-forming layer 4-5 mm can be dispensed with the compaction with pressure.
- the water lasts about 24 h and is followed by drying at 45-50 ° C. If a coating is made, the matrix is on the low-pore side and therefore is predominantly the open-pore side coated.
- the polymers used here are z. Available from the company Evonik and bear the designations L210s, L210, L09s, L207s, L206s (slower degradable PLGA polymers) and RG502, RG502H, RG505 (faster degradable PLGA polymers).
- a matrix as described above may serve to fix cells exposed to agents in a bioreactor.
- defined cell types can be this way whether or not they respond to eligible drugs, and the therapy may be scheduled in response to such assay results.
- drug development can be simplified because toxicity is detected early.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Epidemiology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Transplantation (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dermatology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Cell Biology (AREA)
- Zoology (AREA)
- Pharmacology & Pharmacy (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Botany (AREA)
- Dispersion Chemistry (AREA)
- Biotechnology (AREA)
- Virology (AREA)
- Immunology (AREA)
- Developmental Biology & Embryology (AREA)
- Materials For Medical Uses (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
Description
Claims
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201380007651.7A CN104245002A (zh) | 2012-02-01 | 2013-02-01 | 用于细胞移殖的基体 |
| US14/376,131 US9381165B2 (en) | 2012-02-01 | 2013-02-01 | Matrix for the infiltration with cells |
| JP2014555126A JP5784249B2 (ja) | 2012-02-01 | 2013-02-01 | 細胞の浸潤のためのマトリックス |
| SG11201404478WA SG11201404478WA (en) | 2012-02-01 | 2013-02-01 | Matrix for the infiltration with cells |
| RU2014135278A RU2014135278A (ru) | 2012-02-01 | 2013-02-01 | Матрица для колонизации клеток |
| EP13702345.3A EP2809366A1 (de) | 2012-02-01 | 2013-02-01 | Matrix zur zellbesiedelung |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP12000650.7A EP2628490B1 (de) | 2012-02-01 | 2012-02-01 | Matrix zur Zellbesiedelung |
| EP12000650.7 | 2012-02-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2013113514A1 true WO2013113514A1 (de) | 2013-08-08 |
Family
ID=47632975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2013/000324 Ceased WO2013113514A1 (de) | 2012-02-01 | 2013-02-01 | Matrix zur zellbesiedelung |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US9381165B2 (de) |
| EP (2) | EP2628490B1 (de) |
| JP (2) | JP5784249B2 (de) |
| CN (1) | CN104245002A (de) |
| ES (1) | ES2474121T3 (de) |
| PL (1) | PL2628490T3 (de) |
| RU (1) | RU2014135278A (de) |
| SG (1) | SG11201404478WA (de) |
| WO (1) | WO2013113514A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103908701A (zh) * | 2014-03-27 | 2014-07-09 | 杭州市第三人民医院 | 一种基于不对称膜的人体黑素细胞的培养方法 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109289090A (zh) * | 2018-10-31 | 2019-02-01 | 陈津 | 一种胰岛移植微环境及其构建方法 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000078928A2 (en) * | 1999-06-23 | 2000-12-28 | Celltran Limited | Surface for cell culture |
| EP1264607A1 (de) * | 2001-06-05 | 2002-12-11 | Ethicon, Inc. | Befestigung von absorbierbarem Stützgewebe an Fixierungsvorrichtungen |
| WO2004108810A1 (de) | 2003-06-06 | 2004-12-16 | Humanautocell Gmbh | Matrix, zellimplantat, verfahren zu deren herstellung und deren verwendung |
| WO2006061229A1 (de) * | 2004-12-08 | 2006-06-15 | Humanautocell Gmbh | Verfahren zum testen von substanzen an biomatrices |
| EP1674048A1 (de) * | 2004-12-23 | 2006-06-28 | Radi Medical Systems Ab | Gewebeimplantat zur Verwendung in der Rekonstruktion von Weichgewebedefekten |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4529410B2 (ja) * | 2003-10-23 | 2010-08-25 | 株式会社ジェイ・エム・エス | 培養担体、該培養担体を使用した培養物と培養物の作製方法 |
| JP5552690B2 (ja) | 2006-09-13 | 2014-07-16 | ディーエスエム アイピー アセッツ ビー.ブイ. | 被覆された医療装置 |
| US7763456B2 (en) | 2006-09-28 | 2010-07-27 | University Of Washington | 3D micro-scale engineered tissue model systems |
| DK2252661T3 (en) | 2008-03-12 | 2017-01-16 | Dsm Ip Assets Bv | HYDROPHIL COATING |
| US20100297675A1 (en) * | 2008-11-24 | 2010-11-25 | Huayun Deng | Substrate and method for culturing breast cells |
-
2012
- 2012-02-01 ES ES12000650.7T patent/ES2474121T3/es active Active
- 2012-02-01 PL PL12000650T patent/PL2628490T3/pl unknown
- 2012-02-01 EP EP12000650.7A patent/EP2628490B1/de not_active Not-in-force
-
2013
- 2013-02-01 SG SG11201404478WA patent/SG11201404478WA/en unknown
- 2013-02-01 RU RU2014135278A patent/RU2014135278A/ru not_active Application Discontinuation
- 2013-02-01 EP EP13702345.3A patent/EP2809366A1/de not_active Withdrawn
- 2013-02-01 WO PCT/EP2013/000324 patent/WO2013113514A1/de not_active Ceased
- 2013-02-01 JP JP2014555126A patent/JP5784249B2/ja not_active Expired - Fee Related
- 2013-02-01 US US14/376,131 patent/US9381165B2/en not_active Expired - Fee Related
- 2013-02-01 CN CN201380007651.7A patent/CN104245002A/zh active Pending
-
2015
- 2015-07-21 JP JP2015143732A patent/JP2015226811A/ja active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000078928A2 (en) * | 1999-06-23 | 2000-12-28 | Celltran Limited | Surface for cell culture |
| EP1264607A1 (de) * | 2001-06-05 | 2002-12-11 | Ethicon, Inc. | Befestigung von absorbierbarem Stützgewebe an Fixierungsvorrichtungen |
| WO2004108810A1 (de) | 2003-06-06 | 2004-12-16 | Humanautocell Gmbh | Matrix, zellimplantat, verfahren zu deren herstellung und deren verwendung |
| WO2006061229A1 (de) * | 2004-12-08 | 2006-06-15 | Humanautocell Gmbh | Verfahren zum testen von substanzen an biomatrices |
| EP1674048A1 (de) * | 2004-12-23 | 2006-06-28 | Radi Medical Systems Ab | Gewebeimplantat zur Verwendung in der Rekonstruktion von Weichgewebedefekten |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103908701A (zh) * | 2014-03-27 | 2014-07-09 | 杭州市第三人民医院 | 一种基于不对称膜的人体黑素细胞的培养方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015226811A (ja) | 2015-12-17 |
| SG11201404478WA (en) | 2014-10-30 |
| US9381165B2 (en) | 2016-07-05 |
| EP2628490B1 (de) | 2014-04-02 |
| EP2628490A1 (de) | 2013-08-21 |
| JP5784249B2 (ja) | 2015-09-24 |
| EP2809366A1 (de) | 2014-12-10 |
| ES2474121T3 (es) | 2014-07-08 |
| PL2628490T3 (pl) | 2014-09-30 |
| US20150010611A1 (en) | 2015-01-08 |
| RU2014135278A (ru) | 2016-03-27 |
| CN104245002A (zh) | 2014-12-24 |
| JP2015505491A (ja) | 2015-02-23 |
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