WO2005073365A1 - 移植用細胞の処理方法、細胞懸濁液、移植用補綴物、および損傷部位の治療方法 - Google Patents
移植用細胞の処理方法、細胞懸濁液、移植用補綴物、および損傷部位の治療方法 Download PDFInfo
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- WO2005073365A1 WO2005073365A1 PCT/JP2005/000919 JP2005000919W WO2005073365A1 WO 2005073365 A1 WO2005073365 A1 WO 2005073365A1 JP 2005000919 W JP2005000919 W JP 2005000919W WO 2005073365 A1 WO2005073365 A1 WO 2005073365A1
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- transplantation
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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
- C12N5/066—Tenocytes; Tendons, Ligaments
-
- 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
-
- 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
-
- 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
- C12N2501/15—Transforming growth factor beta (TGF-β)
Definitions
- the present invention relates to a method for treating cells for transplantation, a cell suspension, a prosthesis for transplantation, and a method for treating a damaged site.
- ACL anterior cruciate ligament
- ACL As one of the treatment methods for ACL, a treatment method by transplantation is known, and transplantation with an artificial ligament has been attempted. ACL reconstruction with tendon transplantation is most commonly known.
- an ACL autologous tendon transplantation model as an experimental model has been established and research is being conducted to establish a method for healing earlier. As described in Non-Patent Document 1, this ACL autologous tendon transplantation model can be produced by performing freeze-thaw processing on ACL to necrotize endogenous fibroblasts.
- Non-Patent Document 2 discloses that by administering a low concentration of TGF-1 to an ACL autologous tendon transplantation model, the mechanical properties seen in ACL autologous tendon transplantation are sufficiently suppressed, and the autologous tendon transplantation is suppressed.
- ACL reconstruction model has been established to enable early repair
- Patent Literature 1 and Non-Patent Literature 3 describe therapeutic methods by gene transfer. Gene therapy in which TGF-j31 is produced in vivo using a denovirus or the like has been disclosed. In this method, a vector containing a gene is produced to produce TGF-jS1 at a high concentration, and the recombinant vector is transfected into fibroblasts. Has been injected.
- Patent Document 1 Japanese Patent Application Publication No. 2002-542801
- Non-patent document 1 Journal of Biomechanical Engineering, 2000, Vol. 122, p. 594-599
- Non-patent document 2 Journal of Orthopaedic Research, 2002, Vol. 20, p. 1345- 1351
- Non-patent document 3 Arthritis Research & Therapy , 2003, Vol. 5, pl32- 139
- TGF- / 31 administration of TGF- / 31 to a living body at a high concentration does not improve the mechanical properties of ACL, and cannot deny the possibility that undesirable side effects of TGF_j31 may occur.
- gene therapy in addition to the above-mentioned problems relating to dispersion, there are problems such as side effects due to the use of a virus-derived vector.
- the present invention provides a method for treating cells for transplantation, a cell suspension, a prosthesis for transplantation, and a method for treating a damaged site for early and good repair (reconstruction) of transplanted tissue or damaged living tissue.
- the purpose is to provide.
- the method for treating cells for transplantation of the present invention is characterized by comprising a culturing step of culturing connective tissue cells in a medium containing at least one factor of the TGF- / 3 superfamily.
- the cell suspension of the present invention is characterized by containing the cells for transplantation treated by the method for treating cells for transplantation.
- the transplant prosthesis of the present invention is characterized by being produced by the method for treating cells for transplant of the present invention.
- the method for treating a damaged site comprises a culturing step for culturing connective tissue cells in a medium containing at least one factor of the transforming growth factor (TGF) _ / 3 super family, and an activation method obtained by the culturing step. And a transplantation step of transplanting the cultured cells into a patient.
- TGF transforming growth factor
- the present invention since connective tissue cells cultured in a medium containing at least one factor of the TGF_i3 superfamily are used, transplantation for promptly and satisfactorily repairing a transplanted tissue or a damaged biological tissue is performed.
- the present invention can provide a method for treating cells for use, a cell suspension, a prosthesis for transplantation, and a method for treating a damaged site.
- FIG. 1 is an image of a right knee ACL stained with hematoxylin-eosin (HE) 12 weeks after freezing and thawing according to an example of the present invention.
- HE hematoxylin-eosin
- FIG. 2 is a graph comparing the mechanical properties (a. Tensile strength, b. Tangential elasticity) of the right knee ACL 12 weeks after freezing and thawing with the examples of the present invention.
- FIG. 3 is a transmission electron microscopy (TEM) photograph of a right knee ACL 12 weeks after a freeze-thaw treatment using an example of the present invention.
- TEM transmission electron microscopy
- the method of treating cells for transplantation of the present invention comprises a culturing step of culturing connective tissue cells in a medium containing at least one factor of the TGF- / 3 superfamily. Since the connective tissue cells are pre-activated by culturing them in a medium containing the TGF-j3 superfamily, transplantation of the treated cells involves direct administration of the activated cells to the site of transplantation or injury. This results in the infiltration of activated connective tissue cells, which are different from those infiltrated during the tissue repair process during the natural healing process The living tissue can be repaired early and effectively without causing significant tissue deterioration, and the treatment can be completed in a short time.
- transplantation can be performed in a short period of 12 weeks (about 3 months). Repair of tissue or damaged tissue can be achieved.
- the cells for transplantation mentioned here may be administered in the form of cells such as a cell suspension, but are preferably transplanted in the form of tissue such as a cultured fibroblast sheet. When cells for transplantation in the form of tissue are transplanted, local healing can be expected to be performed more effectively. Also, for skin defects such as wrinkles, by injecting in the form of a cell suspension, it is possible to repair the defective part (injured part) at an early stage.
- the TGF-j3 superfamily used here includes TGF- ⁇ 1, TGF- ⁇ 2, TGF- ⁇ 3, TGF- ⁇ 4, TGF- ⁇ 5, BMP (osteogenic protein) _2, BMP_3, BMP_4, BMP_5, BMP_6, BMP-7 and the like.
- TGF- can be used as isolated and purified from living organisms, and purified and commercially available TGF- can also be used.
- TGF-iS purified from platelet homogenate can be used as cell-derived TGF-iS.
- TGF-J3 may be used alone or in combination as long as it is a factor belonging to this superfamily.
- TGF-iS1 is particularly preferable in terms of the mechanism of action.
- TGF-jS1 can be used at a concentration of 0.1 ng / ml to 100 ng / ml, preferably 4 ng / ml to 10 ng / ml.
- the connective tissue cells in the present invention may be connective tissue cells constituting a living tissue, and from the viewpoint of ease of collection, cells obtained from tissues such as skin, synovium, muscle, bone marrow, and the like.
- the cells are cells differentiated from the cells.
- the connective tissue cells may be any cells capable of avoiding rejection during the period from the use as cells for transplantation or tissue to the time of repair, and are most preferably autologous.
- connective tissue cells skin-derived fibroblasts, synovium-derived fibroblasts, and muscle and fibroblasts, which are preferred by fibroblasts and stem cell-like cells in terms of cell group proliferation ability and repair ability, are preferred.
- Fibroblasts differentiated from mesenchymal stem cells such as bone marrow are included.
- ACL tissue collection and cell proliferation, for example, ACL
- a skin-derived fibroblast is preferable.
- Such connective tissue cells are used after tissue collection in order to proliferate to a sufficient number of cells in advance and to differentiate or select suitable cells of interest from other cells.
- preliminary culture may be performed prior to the culture step. Examples of such preculture include those usually performed as an explant culture method, a cell culture method, and the like. For example, in synovium-derived fibroblasts, after synovial tissue explants are collected using an arthroscopy, they are cultured for several days to several weeks using a tissue explant culture method. Can be obtained. Subculture may be performed as necessary.
- a medium used in the culturing step a liquid medium usually used for culturing can be used.
- a medium usually used for culturing
- examples of such a medium include Dulbecco's modified Eagle's medium (DMEM).
- DMEM Dulbecco's modified Eagle's medium
- An appropriate medium can be selected depending on the type of connective tissue cells to be cultured. Substances and the like may be added in appropriate amounts.
- a sheet-shaped transplantation tissue composed of fibroblasts including the extracellular matrix produced by fibroblasts
- this cultured fibroblast sheet has sufficient strength, it has good operability, and local healing can be expected even after transplantation.
- Te applying a cell culture method seeding density of connective tissue cells at the start of cultivation, is appropriately selected depending on the cell type and growth rate, in general, IX 10 3 cells / cm 2 - 1 X 10 7 cells / cm 2, preferably, 1 X 10 4 cells / cm 2 - a 1 X 10 6 cells / cm 2.
- the culture step is continued until the number and state (morphology) of cells that can be used as transplantation cells or tissues are obtained and connective tissue cells are appropriately activated by TGF- ⁇ .
- the period of the culturing step varies depending on the cell type, the seeding density and the like, but is generally 17 days per day, preferably 2 days to 5 days, more preferably 2 days.
- the connective tissue cells are more preferably carried on a scaffold material, and more preferably carried. Easy to handle cells for transplantation by supporting on scaffold material At the same time, the activated cells can be placed at a local transplant site, and the transplant cells can be efficiently healed without being dispersed.
- the scaffold material examples include fibrin, collagen, and hyaluronic acid from the viewpoint of biological action, and fibrin and collagen are particularly preferable from the viewpoint of embedding and supporting cells.
- fibrin a commercially available fibrin 'sealant (fibrin glue) formed by mixing fibrinogen and thrombin can be used.
- a scaffold material derived from a living body is preferable.
- One of such scaffolds derived from living organisms is the aforementioned extracellular matrix typified by collagen, which regulates the growth, migration, differentiation, etc. of force cells, and as various other extracellular matrix components. As long as the function is maintained, it is not limited to a natural product, and may be an artificial extracellular matrix component. These can be used alone or in combination.
- a bioabsorbable material or a biocompatible material artificial or natural material may be used as another scaffolding material.
- a bioabsorbable or biocompatible material include polylactic acid (PLA), polyglycolic acid (PGA), polyglycolic acid lactic acid copolymer (PGLA), polytaxane, gelatin, chitin, chitosan , Canolaresium anoregate, polyrotaxane hydrogel, and the like.
- Still other scaffold materials include bio-inert materials.
- a biologically inert material is a material in which a thin film (foreign material film) is interposed between living tissue and a living tissue when implanted in a living body. Examples thereof include alumina ceramics, carbon ceramics, and zirconia. Ceramics, titanium, titanium alloys, cobalt-chromium alloys, cobalt-chromium-molybdenum alloys, stainless steels, and the like.
- These scaffold materials are preferably in the form of a mesh, gel, or sponge.
- any form may be used as long as the shape is suitable for transplanting cells for transplantation.
- it is shaped. Therefore, by using a three-dimensional shape that matches the shape of the tissue defect, the defect can be physically compensated, while by adopting a sheet shape, the transplanted or damaged tissue can be operable over a wide range with good operability. Capable of covering and fixing.
- Connective tissue cells may be seeded on the surface of the scaffold material or embedded in the scaffold material. Good. In particular, it is preferable that the cells are cultured in a gel-like extracellular matrix component. In this case, the connective tissue cells are encapsulated in the scaffold material by mixing with the scaffold material in a conventional manner.
- the seeding density of the connective tissue cells depends on the anticipated culture period, the type of culture carrier, and the composition of the medium, but is generally 1 ⁇ 10 4 Zml—1 ⁇ 10 8 Zml. is suitable, from about 1 X 10 5 cells Zml- 1 X 10 preferably eight Zml instrument about 1 X 10 6 cells Zml- about 1 X 10 7 cells Zml is more preferable. If the seeding density is lower than this range, the growth rate is not sufficient, so it is not preferable. It is not efficient if the seeding density is higher than this range.
- Encapsulation can be performed before or after the culturing step.
- cells When embedding is performed before the culturing step, cells may be inoculated into a mixture of a normal medium and a scaffold material. In this case, cell growth and activation with TGF-3 can be performed simultaneously in the encapsulated state.
- the encapsulation when the encapsulation is performed after the culturing step, the cells after growing to a predetermined number of cells may be mixed with the scaffold material. In this case, activation by TGF- / 3 can be performed regardless of the timing of the encapsulation. Which of these methods to carry out the encapsulation can be easily determined by those skilled in the art according to the cell type and the state of the cells.
- the cell suspension of the present invention contains the cells for transplantation obtained by the method for treating cells for transplantation, and is a culture step of culturing connective tissue cells in a medium containing at least one factor of the TGF_i3 superfamily. It can be obtained by processing with a processing method including
- the liquid medium in the cell suspension of the present invention may be any liquid as long as it can be injected into humans, and examples thereof include phosphate buffer (PBS) and physiological saline.
- PBS phosphate buffer
- a basal medium such as DMEM can also be used. Since the cell suspension contains cells activated by the treatment method of the present invention, when injected into a skin defect such as a wrinkle, it actively produces extracellular matrix and rapidly It can repair damaged areas.
- the prosthesis for transplantation of the present invention contains the cells for transplantation obtained by the above-described method for treating cells for transplantation, and is formed using a medium containing at least one factor of the TGF- / 3 superfamily. It can be produced by a treatment method including a culturing step of culturing a synthetic tissue cell. Preferably, it is supported on a scaffold material, that is, it has a supporting step of supporting connective tissue cells on the scaffold material.
- Such a prosthesis for transplantation can be used for treatment of a transplanted tissue or a damaged tissue in a living body, for example, ligaments, tendons, skin, cartilage, bone, and the like, and particularly, ligaments, tendons, and skin. It is preferred that The application of the prosthesis for transplantation includes a transplanted tissue or a damaged tissue in a living tissue.
- the transplanted tissue may be an autotransplant, an allograft, a cultured transplant, or an artificial material transplant that is transplanted into a tissue defect.
- the prosthesis for transplantation is different from a conventional cultured tissue for transplantation (cultured transplant) for directly supplementing a tissue defect, such as an autotransplanted tissue directly transplanted to the tissue defect.
- the purpose of this method is to make the transplant of the present invention quickly and efficiently compatible and to complete the healing by tissue repair.
- the prosthesis for transplantation of the present invention contains cells useful for tissue repair and is indirectly involved in the repair of transplanted or damaged tissues.
- the concept of cell therapy in which tissue is repaired in situ, is applied to orthopedic surgery, especially to the treatment of tendon's ligament. .
- connective tissue cells are used for treatment.
- a method including a transplantation step of transplanting the transplanted cells or transplanted prosthesis after transplantation into a transplanted tissue or a damaged tissue of a patient is employed.
- the cells for transplantation after culturing are embedded in a scaffold material. It is particularly preferable that the scaffold material has a sheet shape.
- the implanting step preferably comprises coating the implant or tissue lesion with a sheet-shaped implant prosthesis.
- a sheet-shaped implant prosthesis Particularly, it is preferable for treating ligaments and tendons.
- the implantable prosthesis can be handled with good operability, and the healing effect is not dissipated due to dispersion, so that it is effective for local treatment.
- the scaffold material is not used and the above-mentioned cultured fibroblast sheet is used.
- the ACL on the right knee of the heron was exposed, and the ACL was frozen using a cryoprobe composed of a stainless steel tube and a urethane foam-coated syringe.
- the liquid nitrogen in the syringe flows through the tube and is discharged into the air as nitrogen gas.
- the tube section comes into contact with the ACL and freezes the ACL.
- the ACL was then thawed by injecting 25 ° C saline into the joint cavity. This freeze-thaw procedure was repeated three times for each ACL. This method can kill 95-100% of cells in ACL.
- tissue injury site ACL autologous tendon transplant model
- FIG. 1 As shown in Fig. 1, many connective tissue cells were observed inside the right knee ACL in gnorape I (Fig. La), and cell proliferation and cell infiltration into the ACL were performed early and efficiently. It was clear. This indicates that transplanted ACLs or damaged ACLs can be effectively repaired.
- the right knee femur ACL—tibia complex was used for biomechanical evaluation using a video dimension analyzer. was subjected to a tensile test. Statistical analysis of the test results was performed by one-way ANOVA using Fisher's PLSD and Scheffs F tests for multiple comparisons. The result is shown in figure 2.
- Fig. 2a tensile strength
- Fig. 2b tangential elastic modulus
- TGF-iS1 promoted the reconstitution of collagen 'fibrils at the tissue injury site from the early stage of transplantation.
- increasing the diameter of such collagen 'fibrils also contributes to the improvement of mechanical properties.
- the mechanical properties and ultrastructure of the ACL autologous tendon transplantation model can be restored in a short period of three weeks. It can be restored to the same state as ACL.
- the conventional method using autologous tendon transplantation requires one year to recover more than 70%, whereas the application of the present invention can shorten this time to 12 weeks (about 3 months). Conceivable.
- the present invention since connective tissue cells cultured in a medium containing at least one factor of the TGF- / 3 superfamily are used, when the connective tissue cells are used for transplantation, the effect is early and effective.
- the living tissue is repaired.
- the present invention is effective in treating damaged tissues and the like, and is a very useful technique in industries that are deeply involved in the biological and medical fields.
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- Biomedical Technology (AREA)
- Rheumatology (AREA)
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- Wood Science & Technology (AREA)
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- Cell Biology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Oral & Maxillofacial Surgery (AREA)
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- Animal Behavior & Ethology (AREA)
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JP2012147713A (ja) * | 2011-01-18 | 2012-08-09 | Terumo Corp | シート形成細胞播種システム |
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Cited By (5)
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US7759354B2 (en) | 2005-06-14 | 2010-07-20 | Schering Corporation | Bicyclic guanidine derivatives as asparyl protease inhibitors, compositions, and uses thereof |
WO2009119935A1 (en) * | 2008-03-26 | 2009-10-01 | Industry-University Cooperation Foundation Hanyang University | Method and composition for inducing regeneration of damaged cartilage using microfracture and hyaluronic acid |
JP2012147713A (ja) * | 2011-01-18 | 2012-08-09 | Terumo Corp | シート形成細胞播種システム |
US9238090B1 (en) | 2014-12-24 | 2016-01-19 | Fettech, Llc | Tissue-based compositions |
US11938246B2 (en) | 2014-12-24 | 2024-03-26 | Fettech, Llc | Tissue-based compositions and methods of use thereof |
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