WO2000008130A2 - Verfahren zur herstellung einer knorpelzellsuspension - Google Patents
Verfahren zur herstellung einer knorpelzellsuspension Download PDFInfo
- Publication number
- WO2000008130A2 WO2000008130A2 PCT/EP1999/004600 EP9904600W WO0008130A2 WO 2000008130 A2 WO2000008130 A2 WO 2000008130A2 EP 9904600 W EP9904600 W EP 9904600W WO 0008130 A2 WO0008130 A2 WO 0008130A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- serum
- cartilage
- cells
- cartilage cells
- frozen
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
- C12N5/06—Animal cells or tissues; Human cells or tissues
- C12N5/0602—Vertebrate cells
- C12N5/0652—Cells of skeletal and connective tissues; Mesenchyme
- C12N5/0655—Chondrocytes; Cartilage
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P19/00—Drugs for skeletal disorders
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
-
- 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
Definitions
- Cartilage is a tissue that consists of 70 to 80% by weight water.
- the structure of the cartilage is such that the cartilage cells are distributed in a matrix that is produced and excreted by the cartilage cells.
- cartilage In contrast to bone, cartilage is not supplied by the nervous, vascular or lymphatic systems.
- the matrix of the articular cartilage essentially consists of type II collagen and the proteoglycans.
- Proteoglycans are proteins with long polysaccharide chains, the glycosaminoglycans. These include keratan sulfate, chondroitin 4 sulfate and chondroitin 6 sulfate.
- Cartilage cells are isolated from a piece of the patient's cartilage and grown in vitro in a culture medium containing fetal calf serum. After the in vitro propagation, these cartilage cells are first used to produce an artificial piece of cartilage tissue in vitro, in which the cartilage cells are stimulated to produce an extracellular matrix.
- This matrix consists of collagen fibrils and sulfated proteoglycans, which include chondroitin-6-sulfate and keratan sulfate.
- an artificial piece of cartilage tissue is grown in vitro, which consists of cartilage cells distributed in a matrix consisting of substances produced and excreted by these cartilage cells.
- This artificial cartilage tissue can then be transplanted to the patient.
- a disadvantage of this method is that the use of foreign sera, here fetal calf serum, cannot prevent the transmission of diseases which can be caused by viruses or bacteria, for example.
- foreign sera here fetal calf serum
- spongioform bovine encephalopathy spongioform bovine encephalopathy
- the company co.don ® Society for Molecular Medicine and Biotechnology mbH offers a modified process for cartilage cell isolation and reproduction as a service. However, no antibiotics or fungistatic agents are added to the culture medium. This is to ensure that the cells' ability to proliferate and differentiate is retained.
- the technical task was therefore to find a process for producing cartilage cell suspensions in which the problems mentioned do not occur.
- it was the task to make the period between cartilage removal and cartilage cell transplantation flexible and still prevent the risk of irreversible dedifferentiation and loss of the ability of the cells to proliferate through cultivation over a longer period of time.
- the technical problem was solved by a method for producing a cartilage cell suspension, the cartilage cells being propagated in a culture medium which contains serum or serum substitute and the cartilage cells being frozen at a temperature of below -10 ° C. after the cell multiplication.
- These cartilage cells preferably originate from cartilage tissue isolated from patients.
- the cells are frozen in a medium which contains human serum, fetal calf serum, calf serum, serum from other mammalian species, serum from other animal species, serum replacement, serum albumin or combinations thereof.
- a medium which contains human serum, fetal calf serum, calf serum, serum from other mammalian species, serum from other animal species, serum replacement, serum albumin or combinations thereof.
- the use of the patient's own serum or serum replacement is particularly advantageous.
- cartilage cells are frozen in a medium which contains a glycosaminoglycan, preferably hyaluronic acid, dermatan sulfate, heparin sulfate, keratan sulfate, chondroitin sulfate or combinations thereof.
- a glycosaminoglycan preferably hyaluronic acid, dermatan sulfate, heparin sulfate, keratan sulfate, chondroitin sulfate or combinations thereof.
- cells are used which, after stimulation, differentiate into cells which produce the extracellular matrix which is typical for articular cartilage, where they include substances such as type II collagen and sulfated proteoglycans, which, for example, chondroitin 6-sulfate, chondroitin Contain 4-sulfate and keratan sulfate.
- substances such as type II collagen and sulfated proteoglycans, which, for example, chondroitin 6-sulfate, chondroitin Contain 4-sulfate and keratan sulfate.
- Cartilage tissues are isolated from humans or from a mammal or other animal species. These cartilage tissues can be hyaline articular cartilage, nasal septum cartilage or costal cartilage. Chondrocytes are isolated from the removed cartilage tissue by adding proteolytic enzymes, for example pronase, papain, collagenase, trypsin, chondroitinase ABC, chondroitinase AC II, hyaluronidase, elastase, cathepsin G or mixtures thereof, in a test tube. The cells to be isolated are cartilage cells, which are also called chondrocytes. The following cells are defined as cartilage cells in the sense of this application:
- cartilage cells are grown in a culture medium. It is also possible to genetically modify and multiply the isolated cartilage cells.
- the multiplication of the cartilage cells takes place in a culture medium with or without serum, ⁇ -ketoglutarate, L-glutamine, buffer, vitamin C and / or other vitamin addition as well as with and without antibacterial active substances and / or antifungal substances.
- the serum additive to the culture medium can be selected from the group of human serum, fetal calf serum, calf serum, serum from other mammalian species, serum from other animal species, serum replacement or combinations thereof.
- Antifreezes which can be used are alkyl sulfoxides, for example methyl ethyl sulfoxide, diethyl sulfoxide, dibutyl sulfoxide, methyl butyl sulfoxide, ethyl butyl sulfoxide, but preferably dimethyl sulfoxide (DMSO) or other suitable cell-penetrating organic solvents, such as, for example, polyalcohols, for example ethylene glycol, propylene glycol, butanediol and glycerol combinations, and glycerol combinations Antifreeze among themselves.
- DMSO dimethyl sulfoxide
- polyalcohols for example ethylene glycol, propylene glycol, butanediol and glycerol combinations, and glycerol combinations Antifreeze among themselves.
- suifat in a concentration of 1 to 10 wt .-%, preferably 2.5 wt .-% are added to a freezing medium.
- This freezing medium can consist of 1 to 95% by volume of serum, preferably 10 to 90% by volume of serum.
- a cultural dium can be any buffered physiological solution, for example buffered
- the isolated chondrocytes obtained above are in a density of about 1 x 10 2 to 5 x 10 6 cells / cm 2 , preferably with a density of 5 x 10 2 to 1 x 10 5 cells / cm 2 , particularly preferably with a density of
- trypsin-EDTA ethylenediaminetetraacetic acid
- the chondrocytes are centrifuged for 5 minutes at 150 to 200 x g at 4 ° C. The supernatant is removed. Sufficient fresh, ice-cooled (antibiotic-free) culture medium with 10% (v / v) human serum is added to the cell suspension so that the cells are twice as concentrated as is ultimately desired for cryopreservation.
- the chondrocyte suspension is then poured into chilled cryotubes in small 1 ml portions. Each of these tubes contains approximately 1 x 10 6 cells.
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Chemical & Material Sciences (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Genetics & Genomics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Animal Behavior & Ethology (AREA)
- Medicinal Chemistry (AREA)
- Public Health (AREA)
- General Chemical & Material Sciences (AREA)
- Rheumatology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biotechnology (AREA)
- Zoology (AREA)
- Pharmacology & Pharmacy (AREA)
- Wood Science & Technology (AREA)
- Microbiology (AREA)
- Cell Biology (AREA)
- Biochemistry (AREA)
- General Engineering & Computer Science (AREA)
- Physical Education & Sports Medicine (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- Materials For Medical Uses (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000563757A JP2003508008A (ja) | 1998-08-05 | 1999-07-02 | 軟骨細胞懸濁液を調製するための方法 |
EP99931242A EP1100871A2 (de) | 1998-08-05 | 1999-07-02 | Verfahren zur herstellung einer knorpelzellsuspension |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19835368A DE19835368C1 (de) | 1998-08-05 | 1998-08-05 | Verfahren zur Herstellung einer Knorpelzellsuspension |
DE19835368.5 | 1998-08-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2000008130A2 true WO2000008130A2 (de) | 2000-02-17 |
WO2000008130A3 WO2000008130A3 (de) | 2000-05-11 |
Family
ID=7876548
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1999/004600 WO2000008130A2 (de) | 1998-08-05 | 1999-07-02 | Verfahren zur herstellung einer knorpelzellsuspension |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1100871A2 (de) |
JP (1) | JP2003508008A (de) |
DE (1) | DE19835368C1 (de) |
WO (1) | WO2000008130A2 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10038700B4 (de) * | 2000-07-31 | 2006-09-07 | Michael Priv.-Doz. Dr. Sittinger | Autologe Bindegewebe, Verfahren zu ihrer Herstellung und ihre Verwendung |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997035472A1 (en) * | 1996-03-25 | 1997-10-02 | Advanced Reproduction Technologies, Inc. | Use of arabinogalactan in cell cryopreservation media |
WO1998017791A1 (en) * | 1996-10-23 | 1998-04-30 | Advanced Tissue Sciences, Inc. | Production of cartilage tissue using cells isolated from wharton's jelly |
-
1998
- 1998-08-05 DE DE19835368A patent/DE19835368C1/de not_active Expired - Fee Related
-
1999
- 1999-07-02 JP JP2000563757A patent/JP2003508008A/ja not_active Withdrawn
- 1999-07-02 WO PCT/EP1999/004600 patent/WO2000008130A2/de not_active Application Discontinuation
- 1999-07-02 EP EP99931242A patent/EP1100871A2/de not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997035472A1 (en) * | 1996-03-25 | 1997-10-02 | Advanced Reproduction Technologies, Inc. | Use of arabinogalactan in cell cryopreservation media |
WO1998017791A1 (en) * | 1996-10-23 | 1998-04-30 | Advanced Tissue Sciences, Inc. | Production of cartilage tissue using cells isolated from wharton's jelly |
Non-Patent Citations (3)
Title |
---|
BRITTBERG, M. ET AL.: "Treatment of deep cartilage defects in the knee with autologous chondrocyte transplantation" THE NEW ENGLAND JOURNAL OF MEDICINE, Bd. 331, Nr. 14, 6. Oktober 1994 (1994-10-06), Seite 889-895 XP002071931 in der Anmeldung erw{hnt * |
BUJIA, J. ET AL.: "Engineering of cartilage tissue using bioresorbable polymer fleeces and perfusion culture" ACTA OTO-LARYNGOLOGICA, Bd. 115, Nr. 2, M{rz 1995 (1995-03), Seiten 307-310, XP002129462 * |
NIXON, A.J. ET AL.: "Isolation, propagation, and cryopreservation of equine articular chondrocytes" AMERICAN JOURNAL OF VETERINARY RESEARCH, Bd. 53, Nr. 12, Dezember 1992 (1992-12), Seiten 2364-2370, XP002129461 * |
Also Published As
Publication number | Publication date |
---|---|
EP1100871A2 (de) | 2001-05-23 |
JP2003508008A (ja) | 2003-03-04 |
WO2000008130A3 (de) | 2000-05-11 |
DE19835368C1 (de) | 2000-02-10 |
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