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EP1880003A1 - Substance expansive pour culture in vitro de cellules souches, procédé de multiplication de cellules souches in vitro et utilisation des cellules souches multipliées selon ledit procédé - Google Patents

Substance expansive pour culture in vitro de cellules souches, procédé de multiplication de cellules souches in vitro et utilisation des cellules souches multipliées selon ledit procédé

Info

Publication number
EP1880003A1
EP1880003A1 EP06742280A EP06742280A EP1880003A1 EP 1880003 A1 EP1880003 A1 EP 1880003A1 EP 06742280 A EP06742280 A EP 06742280A EP 06742280 A EP06742280 A EP 06742280A EP 1880003 A1 EP1880003 A1 EP 1880003A1
Authority
EP
European Patent Office
Prior art keywords
stem cells
pdgf
expansion medium
prp
medium
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.)
Withdrawn
Application number
EP06742280A
Other languages
German (de)
English (en)
Inventor
Markus Tonak
Wiltrud Richter
Julia Vogel
Philip Kasten
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.)
Stiftung Orthopadische Universitatsklinik
Original Assignee
Stiftung Orthopadische Universitatsklinik
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 Stiftung Orthopadische Universitatsklinik filed Critical Stiftung Orthopadische Universitatsklinik
Publication of EP1880003A1 publication Critical patent/EP1880003A1/fr
Withdrawn legal-status Critical Current

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
    • C12N5/0018—Culture media for cell or tissue culture
    • 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
    • C12N2500/00—Specific components of cell culture medium
    • C12N2500/70—Undefined extracts
    • C12N2500/80—Undefined extracts from animals
    • C12N2500/84—Undefined extracts from animals from mammals
    • 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
    • C12N2501/00—Active agents used in cell culture processes, e.g. differentation
    • C12N2501/10—Growth factors
    • C12N2501/11—Epidermal growth factor [EGF]
    • 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
    • C12N2501/00—Active agents used in cell culture processes, e.g. differentation
    • C12N2501/10—Growth factors
    • C12N2501/135—Platelet-derived growth factor [PDGF]

Definitions

  • the present invention relates to an expansion medium for in vitro cultivation of stem cells in a composition comprising all the components required for growth of the stem cells, excluding xenogenic additives, and a method of propagating stem cells in vitro, and to the use of the stem cells propagated by the method for transplantation or reimplantation into a recipient organism.
  • stem cells of different donors can be cultured for different periods before they lose their pluripotency.
  • no media are known without xenogenic additives, ie media with purely allogenic or autogenous additives in which the stem cells can be expanded quickly and in a sufficiently large number for each application.
  • the MSCs are obtained from the bone marrow aspirate of a donor organism which, for example, is from the iliac crest, sternum, or occasionally from the long bones, if opened in the course of surgery. After removal of the bone marrow aspirate, follow Purification and selection steps to isolate the MSC.
  • the purified and isolated MSC are then contains, in a culture medium containing xenogeneic additives, under suitable standard culture conditions, usually with 6% CO 2 air saturation at 37 0 C and 98% humidity in an incubator in bottles, Petri dishes or other culture containers up to one for the planned clinical application expands sufficient cell count.
  • a xenogenic additive found in the expansion media used by many research groups is, for example, a fetal bovine serum (FCS).
  • FCS fetal bovine serum
  • the improvement of bone healing and bone production using the expanded mesenchymal stem cells in combination with a suitable carrier material is considered.
  • Another approach for obtaining a sufficient number of MSCs is the mixing ("pooling") of MSCs from different donors, a problem that arises from the fact that the recipient organism not only owns (as in the case of a reimplantation or autologous transplant) but also transplantation (allograft), which may lead to infections or immunological reactions in the recipient organism, as a result of which a healing process of the bone or cartilage defect to be treated is worsened or even in the case of an immunological reaction of the recipient organism to the alien MSC the transplanted tissue is repelled, healing of the bone or cartilage defect to be treated is thereby prevented and, overall, the overall condition of the recipient deteriorates.
  • the transplantation of stem cells that have been expanded in a medium containing bovine serum products under a significant health hazard, namely with the risk that the recipient of mad cow disease (BSE) takes place.
  • BSE mad cow disease
  • immunological reactions of human recipients to bovine serum products have become known.
  • the present invention is based on the object, an expansion medium and a method for rapid propagation of stem cells in vitro in a sufficient number for clinical applications, excluding infections or immunological reactions of the recipient organism, which are caused by xenogeneic components, and the use of the increased To provide stem cells for clinical applications.
  • the above object is achieved with respect to the expansion medium by a composition for an expansion medium having the features of claim 1.
  • the composition of the aforementioned type is designed such that the composition contains platelet-rich plasma (PRP) and at least one growth factor.
  • PRP platelet-rich plasma
  • the above object is to provide a method for rapidly increasing stem cells in vitro in a sufficient number for clinical applications, excluding infections or immunological reactions of the recipient organism caused by xenogeneic components, by a method having the features of the claim 10 solved. Thereafter, a method for propagating stem cells in vitro of the type mentioned is designed such that the stem cells are propagated in an expansion medium without xenogeneic additives containing the components required for the growth of stem cells, platelet-rich plasma (PRP) and at least one growth factor.
  • PRP platelet-rich plasma
  • the addition of PRP for example, in place of fetal bovine serum (FCS)
  • FCS fetal bovine serum
  • the use of the PRP can effectively prevent immunological reactions or human recipient infections to xenogenic additives in the medium, such as reactions to bovine serum products.
  • expansion of the stem cells can be accelerated by the addition of growth factors.
  • the stem cells propagated by the method according to the invention in the expansion medium according to the invention can be used for transplantation and / or reimplantation into a recipient organism.
  • the expansion medium composition for in vitro cultivation of stem cells may contain platelet-rich plasma (PRP) having a 0.5 to 2.5-fold increased concentration of platelets compared to whole blood. More preferably, the PRP has a 2.5 to 4.5-fold increased concentration of platelets compared to whole blood, and most preferably, the PRP has a 3 to 6.5-fold increased concentration of platelets compared to whole blood.
  • PRP platelet-rich plasma
  • the PRP can be enriched so much that a concentration of platelets of more than 6.5 times in comparison to whole blood can be achieved.
  • the enriched PRP can be used in a final concentration of 0.5 to 10% (v / v) in the expansion medium for culturing the stem cells. Depending on the type and nature of the stem cells, however, a final concentration of the PRP in the expansion medium of more than 10% (v / v) can also be used.
  • the PRP has its origin in the type of the recipient. Concretely, the PRP has a human origin ("allogeneic transplantation") for the expansion of human stem cells. "Avoiding immunological reactions to foreign platelet-rich plasma of the same species is achievable by using the recipient's own plasma to propagate their own stem cells (“ autologous Transplantation"). As additional ingredients, the composition for the expansion medium contains at least two different growth factors.
  • a platelet-dependent growth factor (PDGF) with an epidermal growth factor (EGF) proves to be particularly advantageous in combination with the PRP in order to achieve rapid expansion of the stem cells, in particular of mesenchymal stem cells.
  • PDGF platelet-dependent growth factor
  • EGF epidermal growth factor
  • recombinant human growth factors such as, for example, rh EGF and rh PDGF are preferred for multiplying human mesenchymal stem cells.
  • the composition preferably contains this in combination with the recombinant human Growth factor rh EGF the recombinant human growth factor rh PDGF-AA, more preferably the recombinant human growth factor rh PDFG-AB, and most preferably the recombinant human growth factor rh PDGF-BB.
  • a final concentration in the expansion medium of the respective growth factors of 2 to 5 ng / ml is considered to be preferred. More preferably, the final concentration is from 6 to 8 ng / ml, and most preferably, the expansion medium has a final concentration of the respective growth factors of 8 to 10 ng / ml.
  • final concentrations of the respective growth factors of more than 10 ng / ml can also be used in the expansion medium, in particular for rapid expansion of the cells in the shortest possible time . It is conceivable that when using different growth factors, these are added to the medium in a ratio of 1: 1 or in a ratio that is not equal to 1: 1 in order to be able to control the expansion time and the expansion of the stem cells in a targeted manner.
  • stem cells in particular of human mesenchymal stem cells, proves to be a composition containing the following components per one liter of medium in the stated amount or final concentration:
  • Glucose content (eg Dulbecco ' s Modified
  • Trace elements e.g., MCDB 201 (Sigma) 400 ml
  • Dexamethasone (20 ⁇ g / ml in 1 ml of ethanol and 45 ml of H 2 O) 400 ⁇ l 0.02 ⁇ M
  • Ascorbic acid 2-phosphate 1 5 mg 580 ul 0.1 mM
  • EGF freshness 250 ⁇ l 10 ng / ml rh PDGF-BB, rh PDGF-AA or rh PDGF-AB (fresh) 250 ⁇ l 10 ng / ml,
  • the medium components can be sterile-filtered at -2O 0 C store for up to 8 weeks and the PRP and the growth factors are added fresh to the medium components.
  • Particularly advantageous is the standing and cooling of the medium and the subsequent processing of the medium, for example the pipetting up or down or stirring the medium, on the ability to divide the stem cells, since by letting at cooling temperatures, the platelets in the medium clumping and By processing the medium, the PRP forms "clots" that have a positive effect on the ability of the stem cells to divide.
  • the cells do not differentiate into bone, cartilage, fat or tendon cells and beyond that, retain their ability to divide. This makes it possible to expand primary mesenchymal stem cells from the bone marrow aspirate of a donor to a number of more than 10 6 cells (up to more than 10 8 cells). It is advantageous that repeated bone marrow aspiration on a donor is superfluous and that bone marrow aspirate can be used by almost any donor, regardless of age or health.
  • the stem cells which have been propagated in said expansion medium by the said process can be used for transplantation or reimplantation into a recipient organism.
  • expanded stem cells derived from a donor different from the recipient but of the same species may be used for allogeneic transplantation.
  • endogenous stem cells of the recipient such as mesenchymal stem cells for reimplantation or autologous transplantation, are used to treat and cure a bone or cartilage defect of the recipient. More specifically, at the time of reimplantation, the donor of the bone marrow and the MSC expanded therefrom and the recipient of the expanded MSC are the same person, thus precluding an immunological response to exogenous antigens.
  • mesenchymal stem cells of a primary culture of a donor can be used in conjunction with the carrier material for the treatment and healing of bone defects having a size of 0.5 cm to 10 cm and 0.5 cm to 5 cm in diameter.
  • hydroxyapatite preferably hydroxyapatite (HA), a dimineralized bone matrix (DBM), a polyactide matrix or polyglycol matrix is used as the carrier material, in particular in the field of tissue engineering
  • a ⁇ -tricalcium phosphate ⁇ -TCP
  • CDHA calcium-deficient hydroxyapatite
  • support materials such as a collagen matrix, a gelatin matrix, a chitosan matrix or decellularized tissue, such as mucosa, or combinations of the materials enumerated hereinabove are also useful.
  • the increased root lines according to said method for the regeneration, treatment and healing of tissue defects other than the bone or cartilage defects are used.
  • tissue defects other than the bone or cartilage defects
  • connective tissue, nerve, vascular or tendon defects could be treated and regenerated.
  • stem cells which are the progenitor cells of the skin are propagated and used.
  • Suitable carrier materials are, for example, absorbable materials which can be applied to the body parts with the ingrown cells as a "second" skin.
  • Human mesenchymal cells were obtained from the bone marrow aspirate, which was removed from the iliac crest of a donor by bone marrow puncture.
  • the bone marrow aspirate was purified and selected, and the secreted mesenchymal stem cells in an expansion medium (see below) under standard culture conditions (6% CO 2 , 37 0 C and 98% humidity) increased.
  • D-MEM Dulbecco 's Modified Eagle Liquid Medium
  • MCDB 201 Sigma, Cat # l-1884
  • 20 ml supplement [10 mg / l final conc .] human insulin (Sigma, Cat # l-9278), [10 mg / l final conc.] human transferrin, Cat # T-8158) and [10 ⁇ g / l final conc.] sodium selenite (Sigma, Cat # S-9133))
  • Dexamethasone Sigma, Cat # D-8893
  • the solution thus prepared was at -2O 0 C to max. Frozen for 8 weeks.
  • To prepare the fresh medium the required amount of medium was thawed and 30 ml [3% final conc.]
  • Concentrated fresh PRP (3 to 6.5-fold concentration of thrombocytes compared to whole blood) and 250 .mu.l [10 ng / ml final conc.
  • Rh PDGF-BB (Strathmann Biotec hEGF-500 and hPDGF-BB-10, respectively) were added and no longer sterile-filtered. After that, the standing of the medium followed for at least 2 hours at -4 0 C to allow the platelets clumped. After standing, the medium was made ready for use by pipetting up and down to form a "clot".
  • the ready-to-use fresh PRP expansion medium without xenogenic additives was compared to a conventional expansion medium with xenogeneic addition of FCS (fetal bovine serum) for the rate of proliferation of media-cultured human mesenchymal stem cells.
  • FCS fetal bovine serum
  • the use of the PRP expansion medium without xenogenic additives for the expansion of mesenchymal stem cells has been used in the animal model for so-called "tissue engineering", namely in conjunction with excipients, for example in conjunction with a dimineralized bone matrix (DBM), a ⁇ -tricalcium phosphate ( ⁇ -TCP) and a calcium-deficient hydroxyapatite (CDHA) ceramic body of 84% porosity with an average pore diameter in the macroscopic range of 0.2 to 0.6 mm (55 vol%) and a pore diameter in the microscopic range of ⁇ 5 ⁇ m and a specific surface tested on average 0.5 m 2 / g.
  • DBM dimineralized bone matrix
  • ⁇ -TCP ⁇ -tricalcium phosphate
  • CDHA calcium-deficient hydroxyapatite
  • the ability of the MSC produced in the PRP expansion medium to evolve bone in vivo has also been demonstrated.
  • the MSC retain their desired properties to differentiate into bone and cartilage.
  • the desired surface markers of the cells are retained in the expansion process.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Biotechnology (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Genetics & Genomics (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Microbiology (AREA)
  • Biochemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Cell Biology (AREA)
  • Materials For Medical Uses (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)

Abstract

L'invention concerne une substance expansive pour cultiver des cellules souches in vitro, dans une composition comportant tous les constituants requis pour la croissance de cellules souches, à l'exclusion d'additifs xénogènes. Ladite substance se présente de manière que la composition contienne du plasma riche en plaquettes (PRP) et au moins un facteur de croissance.
EP06742280A 2005-05-09 2006-04-26 Substance expansive pour culture in vitro de cellules souches, procédé de multiplication de cellules souches in vitro et utilisation des cellules souches multipliées selon ledit procédé Withdrawn EP1880003A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510022032 DE102005022032A1 (de) 2005-05-09 2005-05-09 Expansionsmedium zur in vitro Kultivierung von Stammzellen, Verfahren zur Vermehrung von Stammzellen in vitro und Verwendung der nach dem Verfahren vermehrten Stammzellen
PCT/DE2006/000737 WO2006119727A1 (fr) 2005-05-09 2006-04-26 Substance expansive pour culture in vitro de cellules souches, procede de multiplication de cellules souches in vitro et utilisation des cellules souches multipliees selon ledit procede

Publications (1)

Publication Number Publication Date
EP1880003A1 true EP1880003A1 (fr) 2008-01-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP06742280A Withdrawn EP1880003A1 (fr) 2005-05-09 2006-04-26 Substance expansive pour culture in vitro de cellules souches, procédé de multiplication de cellules souches in vitro et utilisation des cellules souches multipliées selon ledit procédé

Country Status (3)

Country Link
EP (1) EP1880003A1 (fr)
DE (1) DE102005022032A1 (fr)
WO (1) WO2006119727A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT505008B1 (de) * 2007-06-06 2008-10-15 Angewandte Biotechnologie Gmbh Verfahren zum kultivieren von sehnenzellen aus nicht embryonalen pluripotenten zellen mesenchymaler herkunft

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070122906A1 (en) * 2003-12-29 2007-05-31 Allan Mishra Method of culturing cells

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006119727A1 *

Also Published As

Publication number Publication date
WO2006119727A1 (fr) 2006-11-16
DE102005022032A1 (de) 2006-11-16

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