WO2024063020A1 - 椎間板治療剤 - Google Patents
椎間板治療剤 Download PDFInfo
- Publication number
- WO2024063020A1 WO2024063020A1 PCT/JP2023/033663 JP2023033663W WO2024063020A1 WO 2024063020 A1 WO2024063020 A1 WO 2024063020A1 JP 2023033663 W JP2023033663 W JP 2023033663W WO 2024063020 A1 WO2024063020 A1 WO 2024063020A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stem cells
- mesenchymal stem
- intervertebral disc
- derived
- free
- 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
- 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
- A61K35/32—Bones; Osteocytes; Osteoblasts; Tendons; Tenocytes; Teeth; Odontoblasts; Cartilage; Chondrocytes; Synovial membrane
-
- 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
- A61P19/08—Drugs for skeletal disorders for bone diseases, e.g. rachitism, Paget's disease
-
- 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
- A61K35/28—Bone marrow; Haematopoietic stem cells; Mesenchymal stem cells of any origin, e.g. adipose-derived stem 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
- A61L27/36—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
- A61L27/3604—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 characterised by the human or animal origin of the biological material, e.g. hair, fascia, fish scales, silk, shellac, pericardium, pleura, renal tissue, amniotic membrane, parenchymal tissue, fetal tissue, muscle tissue, fat tissue, enamel
- A61L27/3633—Extracellular matrix [ECM]
-
- 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
- A61L27/3804—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 characterised by specific cells or progenitors thereof, e.g. fibroblasts, connective tissue cells, kidney cells
- A61L27/3834—Cells able to produce different cell types, e.g. hematopoietic stem cells, mesenchymal stem cells, marrow stromal cells, embryonic stem 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
- A61L27/36—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
- A61L27/3839—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 characterised by the site of application in the body
- A61L27/3843—Connective tissue
- A61L27/3852—Cartilage, e.g. meniscus
- A61L27/3856—Intervertebral discs
-
- 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
- A61L27/54—Biologically active materials, e.g. therapeutic substances
-
- 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
-
- 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
- C12N5/0031—Serum-free culture media
-
- 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
- C12N5/0062—General methods for three-dimensional 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
- 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
- C12N5/0662—Stem cells
- C12N5/0668—Mesenchymal stem cells from other natural sources
-
- 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
- A61L2430/00—Materials or treatment for tissue regeneration
- A61L2430/38—Materials or treatment for tissue regeneration for reconstruction of the spine, vertebrae or intervertebral discs
Definitions
- the present invention relates to an intervertebral disc therapeutic agent.
- Patent Document 1 proposes a scaffold-free self-organizing three-dimensional artificial tissue that has tissue strength that can be used clinically.
- Non-Patent Document 1 describes the treatment of intervertebral disc damage by transplanting a tissue engineered construct (TEC) produced by the method described in Patent Document 1 using mesenchymal stem cells derived from rat fat. It has been shown to be effective.
- TEC tissue engineered construct
- Non-Patent Document 1 leaves room for improvement in terms of survival of the transplanted tissue regeneration material.
- One aspect of the present invention aims to provide an intervertebral disc treatment agent that survives well after transplantation.
- an intervertebral disc therapeutic agent contains a scaffold-free artificial tissue in which synovium-derived mesenchymal stem cells form a three-dimensional structure.
- FIG. 1 is a diagram illustrating the evaluation of endplate damage score (CT score) using CT in an example.
- CT score endplate damage score
- FIG. 2 is a diagram showing an X-ray photograph of the surgical site of a group of rats used in Examples. It is a figure showing the result of DHI and CT score evaluated in an example.
- FIG. 3 is a diagram showing vimentin staining results in Examples.
- the intervertebral disc therapeutic agent contains a scaffold-free artificial tissue in which synovial membrane-derived mesenchymal stem cells form a three-dimensional structure.
- the present inventors have discovered that a scaffold-free artificial tissue in which synovium-derived mesenchymal stem cells form a three-dimensional structure is effective in treating intervertebral discs.
- a scaffold-free artificial tissue in which synovium-derived mesenchymal stem cells form a three-dimensional structure has good engraftment at the transplant site and remains at the transplant site for a long period of time. I found out what to do.
- intervertebral disc treatment agents containing scaffold-free artificial tissue in which synovium-derived mesenchymal stem cells have formed a three-dimensional structure have excellent therapeutic effects and are also excellent in sustaining therapeutic effects. There is.
- the intervertebral disc treatment agent can be used to treat damaged or defective areas of the intervertebral disc.
- Intervertebral disc therapeutic agents treat damage or defects in intervertebral discs by administering them to areas that require treatment. By administering the intervertebral disc therapeutic agent to the injured or defective area of the intervertebral disc, regeneration of the intervertebral disc at the administration site is promoted, and the injured or defective intervertebral disc can be treated.
- the method of administering the intervertebral disc therapeutic agent is not particularly limited, and examples include transplanting the intervertebral disc therapeutic agent to the treatment site, or injecting an injection solution containing the intervertebral disc therapeutic agent into the treatment site.
- Examples of methods include: Intervertebral disc therapeutic agents may be administered to the treatment site alone or in combination with other therapeutic agents.
- mesenchymal stem cells refer to somatic stem cells that differentiate into tissues belonging to the mesenchymal system.
- mesenchymal stem cells include mesenchymal stem cells isolated from mesenchymal stem cells with specific properties, mesenchymal stem cells subjected to some kind of stimulation such as cytokine stimulation, and mesenchymal stem cells This also includes those into which genes have been introduced.
- MUSE cells, MAPC cells, SP-1 cells, etc. are also included in mesenchymal stem cells.
- Mesenchymal stem cells have the ability to proliferate and differentiate into bone cells, chondrocytes, muscle cells, stromal cells, tendon cells, adipocytes, and the like.
- Mesenchymal stem cells are known to be isolated not only from adult tissues such as bone marrow, adipocytes, synovial cells, alveolar bone, and periodontal ligament, but also from placenta, umbilical cord, umbilical cord blood, and various fetal cells. It is being
- the synovial membrane-derived mesenchymal stem cells that form the artificial tissue contained in the intervertebral disc treatment agent are stem cells contained in the synovial membrane, and can be obtained from synovial tissue by a known method.
- Synovium-derived mesenchymal stem cells have the ability to differentiate into chondrocytes.
- the mesenchymal stem cells derived from the synovium may be mesenchymal stem cells derived from the synovium of non-human animals such as rats and mice, but are preferably mesenchymal stem cells derived from the synovium of humans.
- Mesenchymal stem cells derived from human synovium have better engraftment at the treatment site when an intervertebral disc treatment agent is administered to the treatment site of a human, and have excellent sustainability of therapeutic effects.
- mesenchymal stem cells derived from human synovium can reduce the risks of biological contamination and contamination of immunogenic substances to humans to whom intervertebral disc therapeutic agents are administered.
- Synovium-derived mesenchymal stem cells may be those cultured by conventionally known methods, preferably serum-free or low-serum culture, and serum-free culture is preferred. More preferred. In addition, serum-free cultured synovium-derived mesenchymal stem cells have better engraftment at the treatment site when an intervertebral disc treatment agent is administered to the treatment site in humans, resulting in excellent long-lasting therapeutic effects. ing.
- the culture is serum-free
- the culture components are known.
- serum since serum is derived from natural components, there are differences in the components from lot to lot, but such differences do not occur in serum-free media. Therefore, serum-free cultured synovium-derived mesenchymal stem cells are superior in safety and quality. Furthermore, risks such as biological contamination and mixing of immunogenic substances can be minimized, and substances that do not exist in the body can be minimized. Furthermore, since the biological raw materials contained are clearly defined, quality control is easy. Furthermore, mesenchymal stem cells that are cultured without serum in some serum-free media such as STK (registered trademark) medium have an excellent proliferation rate.
- STK registered trademark
- serum-free culture is intended to mean culture without serum. For example, it is intended to culture using a serum-free medium, which is a medium that does not contain serum.
- low serum culture refers to culture using a medium containing a smaller amount of serum than a general serum-containing medium (for example, 10% FBS-containing medium), and culture using a general serum-containing medium. It is intended that the culture period using a serum-containing medium is shorter than that of culture.
- the basal medium for constituting the serum-free medium is not particularly limited as long as it is a well-known animal cell culture medium in the art, and preferred basal media include, for example, Ham's F12 medium, DMEM medium, and RPMI-1640 medium. , MCDB medium, etc. These basal media may be used alone or in combination.
- the basal medium for constituting the serum-free medium is preferably a medium in which MCDB and DMEM are mixed at a ratio of 1:1.
- a serum-free medium supplemented with FGF, PDGF, TGF- ⁇ , HGF, EGF, at least one phospholipid, and at least one fatty acid is added to the above-mentioned basal medium. It can be used for culture.
- the final concentration of FGF in the basal medium is preferably 0.1 to 100 ng/ml, more preferably 3 ng/ml.
- the final concentration of PDGF in the basal medium is preferably 0.5 to 100 ng/ml, more preferably 10 ng/ml.
- the final concentration of TGF- ⁇ in the basal medium is preferably 0.5 to 100 ng/ml, more preferably 10 ng/ml.
- the content of HGF in the basal medium is preferably 0.1-50 ng/ml, more preferably 5 ng/ml, in final concentration.
- the content of EGF in the basal medium is preferably 0.5-200 ng/ml, more preferably 20 ng/ml, in final concentration.
- the total content of phospholipids in the basal medium is preferably 0.1-30 ⁇ g/ml, more preferably 10 ⁇ g/ml, in final concentration.
- the total content of fatty acids in the basal medium is preferably 1/1000-1/10 of the basal medium, more preferably 1/100.
- the serum-free medium may contain phospholipids.
- phospholipids include phosphatidic acid, lysophosphatidic acid, phosphatidylinositol, phosphatidylserine, phosphatidylethanolamine, phosphatidylcholine, and phosphatidylglycerol.
- Phospholipids may be contained alone or in combination.
- the serum-free medium may contain a combination of phosphatidic acid and phosphatidylcholine, and these phospholipids may be of animal or plant origin. .
- the serum-free medium may contain fatty acids.
- fatty acids include linoleic acid, oleic acid, linolenic acid, arachidonic acid, myristic acid, palmitoic acid, palmitic acid, and stearic acid, and the culture medium additive according to the present embodiment contains these fatty acids alone. They may be contained or may be contained in combination.
- the serum-free medium according to this embodiment may further contain cholesterol in addition to the above fatty acids.
- FGF is intended to be a growth factor selected from the fibroblast growth factor (FGF) family, preferably FGF-2 (bFGF), but FGF It may also be selected from other FGF families such as -1.
- FGF fibroblast growth factor
- PDGF is intended to be a growth factor selected from the platelet derived growth factor (PDGF) family, and is preferably PDGF-BB or PDGF-AB.
- TGF- ⁇ is intended to be a growth factor selected from the transforming growth factor- ⁇ (TGF- ⁇ ) family, TGF- ⁇ 1. is preferred, but may also be selected from other TGF- ⁇ families.
- HGF is intended to be a growth factor selected from the hepatocyte growth factor family
- EGF is intended to be a growth factor selected from the epidermal growth factor (EGF) family. growth factors are contemplated.
- the serum-free medium may further contain at least two factors selected from the group consisting of connective tissue growth factor (CTGF), vascular endothelial growth factor (VEGF), and an ascorbic acid compound.
- CTGF connective tissue growth factor
- VEGF vascular endothelial growth factor
- ascorbic acid compound an ascorbic acid compound
- ascorbic acid compound is intended to be ascorbic acid (vitamin C) or ascorbic acid diphosphate, or compounds similar thereto.
- the above-mentioned growth factors contained in the serum-free medium may be natural or may be produced by genetic recombination.
- the serum-free medium preferably contains a lipid antioxidant.
- the lipid antioxidant contained in the serum-free medium can be DL- ⁇ -tocopherol acetate (vitamin E).
- the serum-free medium may also further contain a surfactant.
- the surfactant contained in the serum-free medium can be Pluronic F-68 or Tween 80.
- the serum-free medium may further contain insulin, transferrin, and selenate.
- insulin may be an insulin-like growth factor and may be derived from natural cells or produced recombinantly.
- the culture medium additive according to the present invention may further contain dexamethasone or other glucocorticoids.
- mesenchymal stem cells isolated from the synovial tissue of animals such as humans by a conventional method are seeded in the above-mentioned serum-free medium and cultured until they proliferate to the desired number.
- culture conditions it is preferable to seed 1 to 2 x 104 mesenchymal stem cells per ml of medium, and the culture temperature is preferably 37°C ⁇ 1°C, the culture time is 48 to 96 hours, and the culture is preferably performed under 5% CO2 .
- the culture container used for culture is not particularly limited as long as mesenchymal stem cells can proliferate.
- a 75 cm 2 flask manufactured by Falcon, a 75 cm 2 flask manufactured by Sumitomo Bakelite, etc. can be suitably used.
- cell proliferation may be affected by the type of culture container used. Therefore, in order to more efficiently proliferate synovium-derived mesenchymal stem cells, a culture vessel suitable for proliferation is used for each mesenchymal stem cell to be proliferated (hereinafter also referred to as "proliferation target cell"). It is preferable to culture.
- An example of a method for selecting a culture vessel suitable for the proliferation of cells to be proliferated is a method in which the cells to be proliferated are allowed to select an optimal culture vessel. Specifically, multiple types of culture vessels are prepared, cells to be proliferated are grown under the same culture conditions except for the different types of culture vessels, and the number of cells is measured by a known method two weeks after the start of culture. However, it can be determined that the culture vessels are suitable for propagating the cells to be proliferated in descending order of the number of cells.
- the proliferation rate of the cells to be proliferated is fast, even before two weeks have passed from the start of culture, the proliferation of the cells to be proliferated will be increased in descending order of the time it takes to reach 80-90% of the confluent state. It can be determined that this is a suitable culture vessel.
- cell adhesion molecules include fibronectin, collagen, and gelatin. These cell adhesion molecules may be used alone or in combination.
- the content of cell adhesion molecules in the serum-free medium is preferably 1 to 50 ⁇ g/ml in final concentration, more preferably 5 ⁇ g/ml.
- the adhesion efficiency of cells to be proliferated to the culture vessel can be improved by adding fibronectin to the serum-free medium at a final concentration of 5 ⁇ g/ml. .
- synovium-derived mesenchymal stem cells may be passaged at least once.
- Mesenchymal stem cells proliferate in an anchorage-dependent manner, so if mesenchymal stem cells are proliferating unevenly locally, it is possible to culture them by passage synovium-derived mesenchymal stem cells during proliferation. Conditions can be improved.
- the method for passage of mesenchymal stem cells derived from the synovium is not particularly limited, and the cells can be passaged using conventionally known methods for passage of mesenchymal stem cells. Since the mesenchymal stem cells derived from the synovium are in good condition after passaging, when passaging, use a cell detachment agent that does not contain components derived from mammals or microorganisms to remove the above mesenchymal stem cells. Preferably, the stem cells are detached. Examples of the above-mentioned "cell detachment agent that does not contain components derived from mammals and microorganisms" include TrypLE Select CTS (Thermo Fisher Scientific Inc.), ACCUTASE (Innovative Cell Technologies, Inc.), etc.
- the artificial tissue contained in the intervertebral disc therapeutic agent according to one aspect of the present invention is a scaffold-free artificial tissue in which synovium-derived mesenchymal stem cells form a three-dimensional structure.
- the artificial tissue may be a tissue engineered construct (TEC).
- TEC tissue engineered construct
- the intervertebral disc treatment agent according to one aspect of the present invention contains a scaffold-free artificial tissue with a three-dimensional structure, cells can easily adhere to the transplant site and exert a long-term therapeutic effect. Can be done.
- a scaffold-free artificial tissue with a three-dimensional structure may be prepared by processing a cell mass of mesenchymal stem cells into a three-dimensional structure using a conventionally known method.
- the term "three-dimensional structure" refers to an object that extends in three dimensions, in which the matrix is three-dimensionally oriented, the cells are arranged three-dimensionally, and the cells maintain their intercellular bonds and orientation.
- the area, thickness, and strength of the artificial tissue may be appropriately set to suit the treatment of intervertebral discs, and those skilled in the art can appropriately set the size.
- This size can be set depending on the environment to be ported.
- Small-sized artificial tissues have the advantage of being able to be injected into body cavities with a needle.
- large-sized artificial tissues have the advantage of being easy to handle, such as being easy to grasp with pins during surgery, making it easy to administer a sufficient number of cells.
- the artificial tissue When the artificial tissue is to be transplanted, it is preferable that it has at least a certain size.
- a size is, for example, 1 cm 2 or more, preferably 2 cm 2 or more, and more preferably 3 cm 2 or more with respect to the area of the artificial tissue forming the three-dimensional structure. More preferably, it is 4 cm 2 or more, 5 cm 2 or more, 6 cm 2 or more, 7 cm 2 or more, 8 cm 2 or more, 9 cm 2 or more, 10 cm 2 or more, and 15 cm 2 or more.
- or 20 cm 2 or more may be, for example, 40 cm 2 or less, 30 cm 2 or less, 20 cm 2 or less, but the area is not limited to these, depending on the use, the area is 1 cm 2 or less, or 40 cm 2 or more It can be.
- the size is preferably 2 mm 3 or more, more preferably 40 mm 3 or more, and may be, for example, 40 cm 3 or less, or 20 cm 3 or less, but is not limited thereto. However, it may be less than 2mm3 .
- the sufficient thickness of the implantable artificial tissue varies depending on the area to be implanted, but those skilled in the art can set the thickness as appropriate. This thickness can be set depending on the environment to be implanted. It is intended that the thickness of the artificial tissue be 2 mm or more, more preferably 3 mm or more, even more preferably 5 mm or more. When the artificial tissue is applied to cartilage, it may be, for example, 1 mm or more, preferably 2 mm or more, more preferably 3 mm or more, even more preferably 5 mm or more. Further, in any case, the length may be 1 mm or less, 10 mm or less, or 5 mm or less.
- the number of cells that make up the artificial tissue can be selected appropriately, but may be, for example, a mass of 50 to 200 cells, or a mass of 1 million to 100 million cells. The mass may also be small or large.
- materials for such a scaffold include, but are not limited to, chemical polymer compounds, ceramics, and biological preparations such as polysaccharides, collagen, gelatin, and hyaluronic acid.
- Scaffold refers to a material that is substantially solid and contains strength capable of supporting cells or tissues.
- “scaffold type” is a material that is processed into a three-dimensional structure by artificially adding a scaffolding material for cells and tissues to attach or retain cells and enable their growth. ” cell preparations are the mainstream.
- methods have been developed that do not artificially add scaffolds, such as stimulating the cells themselves to produce an environment that can serve as their own scaffold. Development of “scaffold-free” cell preparations is underway.
- the artificial tissue is a scaffold-free three-dimensional structure
- the amount of materials other than mesenchymal stem cells contained in the intervertebral disc treatment agent can be reduced.
- the components are known, the risks of biological contamination and the mixing of immunogenic substances are minimized, and the presence in the body It is possible to minimize the amount of substances that are not used.
- natural products such as collagen may be used as scaffolds. The components of such natural products vary from lot to lot.
- the scaffold-free three-dimensional structure has known components, it has excellent safety and quality stability.
- natural products such as those described above are at risk of containing biological contamination and immunogenic substances. Such risks can be reduced if the artificial tissue is a scaffold-free three-dimensional structure.
- a scaffold-free artificial tissue which is a three-dimensional structure containing synovium-derived mesenchymal stem cells, which is included in the intervertebral disc therapeutic agent according to one aspect of the present invention
- a conventionally known low adhesion plate can be used.
- a method using a micropatterned surface plate, and a hanging drop method can be adopted.
- an artificial tissue may be produced using the method described in Japanese Patent No. 4,522,994.
- a commercially available product may be used, and for example, gMSC (registered trademark) 1 (manufactured by Two Cell Co., Ltd.) can be suitably used.
- the intervertebral disc therapeutic agent according to one aspect of the present invention may further contain an extracellular matrix derived from mesenchymal stem cells.
- extracellular matrix refers to a substance, also called extracellular matrix, that exists between somatic cells, regardless of whether they are epithelial cells or non-epithelial cells.
- Extracellular matrix is one of the biological substances produced by cells, and is known to be involved not only in tissue support but also in the composition of the internal environment necessary for the survival of all body cells.
- Typical extracellular matrices include, for example, collagen, elastin, vitronectin, fibronectin, laminin, thrombospondin, proteoglycans (for example, decorin, biglycan, fibromodulin, lumican, hyaluronic acid, aggrecan, etc.).
- Various extracellular matrices that play a role in cell adhesion can be used in the present invention, but are not limited to these.
- the extracellular matrix preferably contains at least one selected from the group consisting of collagen, vitronectin, and fibronectin.
- the extracellular matrix may be integrated with the artificial tissue to form a three-dimensional structure, or may exist independently from the artificial tissue in the intervertebral disc therapeutic agent.
- the intervertebral disc treatment agent may further contain reagents, buffers, etc. for stably holding the artificial tissue.
- a method for treating an intervertebral disc according to one aspect of the present invention includes the step of administering a scaffold-free artificial tissue in which synovial membrane-derived mesenchymal stem cells form a three-dimensional structure.
- the mesenchymal stem cells that form the artificial tissue administered in the method for treating intervertebral discs may be cultured in a serum-free manner.
- the mesenchymal stem cells forming the artificial tissue administered in the method for treating intervertebral discs may be derived from the human synovium.
- the artificial tissue administered in the intervertebral disc treatment method may further contain an extracellular matrix derived from mesenchymal stem cells.
- the description of the artificial tissue refers to the description of the artificial tissue in the intervertebral disk treatment agent. do.
- the artificial tissue can be administered by, for example, transplanting the artificial tissue to the treatment site or injecting an injection solution containing the artificial tissue into the treatment site.
- the artificial tissue may be administered alone or in combination with other therapeutic agents.
- the dosage of the artificial tissue in the administration step can be determined by a person skilled in the art, taking into account the therapeutic purpose, target disease (type, severity, etc.), patient's age, weight, sex, medical history, form or type of tissue, etc. It can be determined as appropriate.
- the administration frequency of the artificial tissue in the administration process can also be determined by those skilled in the art as appropriate, taking into consideration the therapeutic purpose, target disease (type, severity, etc.), patient's age, weight, sex, past medical history, and treatment course. can be determined.
- the frequency of administration includes, for example, daily to once every few months (eg, once a week to once a month).
- the amount and frequency of administration of the artificial tissue in the administration step may be adjusted as appropriate depending on the course of treatment.
- the treatment site to which the artificial tissue is administered is a damaged or defective area of the intervertebral disc.
- Mesenchymal stem cells for use in intervertebral disc treatment are mesenchymal stem cells for use in the treatment of intervertebral discs, are derived from synovium, and are capable of forming a scaffold-free artificial tissue having a three-dimensional structure. There is.
- Mesenchymal stem cells for use in treating intervertebral discs may be cultured serum-free.
- Mesenchymal stem cells for use in treating intervertebral discs may also be derived from the human synovium.
- mesenchymal stem cells for use in treating intervertebral discs may further contain a mesenchymal stem cell-derived extracellular matrix.
- the mesenchymal stem cells for use in the treatment of intervertebral discs are mesenchymal stem cells that form the artificial tissue contained in the therapeutic agent for intervertebral discs according to one embodiment of the present invention.
- the explanation of mesenchymal stem cells and artificial tissues in intervertebral disc treatment agents is incorporated.
- Mesenchymal stem cells for use in the treatment of intervertebral discs can be used to treat damaged or defective areas of the intervertebral disc.
- Mesenchymal stem cells for use in the treatment of intervertebral discs are administered to the site in need of treatment to treat damage or defects in the intervertebral disc.
- mesenchymal stem cells to produce intervertebral disc treatment drugs The use of mesenchymal stem cells for producing a therapeutic drug for intervertebral disc according to one aspect of the present invention is the use of mesenchymal stem cells for producing a therapeutic drug for intervertebral disc, wherein the mesenchymal stem cells It forms a scaffold-free artificial tissue with a three-dimensional structure.
- the mesenchymal stem cells may be cultured in a serum-free manner.
- the mesenchymal stem cells may be derived from the human synovium.
- the artificial tissue may further contain an extracellular matrix derived from mesenchymal stem cells. That is, since one aspect of the artificial tissue in the use of mesenchymal stem cells for producing a therapeutic agent for intervertebral discs is the artificial tissue included in the therapeutic agent for intervertebral discs according to one aspect of the present invention, the description of the artificial tissue is as follows. The explanation of the artificial tissue in the intervertebral disc treatment agent is referred to.
- the intervertebral disc treatment drug produced using mesenchymal stem cells may further include a pharmaceutically acceptable carrier, as well as a scaffold-free artificial tissue in which synovium-derived mesenchymal stem cells form a three-dimensional structure.
- Pharmaceutically acceptable carriers included in intervertebral disc therapeutics include any materials known in the art.
- Pharmaceutically acceptable carriers include antioxidants, preservatives, colorants, flavors, and diluents, emulsifiers, suspending agents, solvents, fillers, fillers, buffers, delivery vehicles, diluents, Including, but not limited to, excipients and/or pharmaceutical adjuvants.
- Intervertebral disc therapeutics produced using mesenchymal stem cells can be used to treat damaged or defective areas of intervertebral discs.
- Intervertebral disc therapeutic agents treat damage or defects in intervertebral discs by administering them to the area in need of treatment.
- an intervertebral disc therapeutic agent By administering an intervertebral disc therapeutic agent to a damaged or defective area of an intervertebral disc, regeneration of the intervertebral disc at the administration site is promoted, and the injury or defect of the intervertebral disc can be treated.
- the intervertebral disc therapeutic agent according to aspect 1 of the present invention contains a scaffold-free artificial tissue in which synovium-derived mesenchymal stem cells form a three-dimensional structure.
- the mesenchymal stem cells may be those cultured in a serum-free manner.
- the mesenchymal stem cells may be derived from the human synovium.
- the intervertebral disc therapeutic agent according to Aspect 4 of the present invention may further contain an extracellular matrix derived from the mesenchymal stem cells in any of Aspects 1 to 3 above.
- the intervertebral disc treatment method according to aspect 5 of the present invention includes the step of administering a scaffold-free artificial tissue in which synovial membrane-derived mesenchymal stem cells have formed a three-dimensional structure.
- the mesenchymal stem cells may be those cultured in a serum-free manner.
- the mesenchymal stem cells may be derived from the human synovium.
- the method for treating an intervertebral disc according to aspect 8 of the present invention is any one of aspects 5 to 7, in which the artificial tissue may further contain an extracellular matrix derived from the mesenchymal stem cells.
- the mesenchymal stem cells according to aspect 9 of the present invention are mesenchymal stem cells for use in the treatment of intervertebral discs, are derived from synovium, and are capable of forming a scaffold-free artificial tissue having a three-dimensional structure. There is.
- the mesenchymal stem cells according to aspect 10 of the present invention may be those cultured in a serum-free manner in aspect 9 above.
- the mesenchymal stem cells according to aspect 11 of the present invention may be derived from the human synovium in aspect 9 or 10.
- the mesenchymal stem cells according to aspect 12 of the present invention may further contain an extracellular matrix derived from the mesenchymal stem cells in any of aspects 9 to 11.
- mesenchymal stem cells is the use of mesenchymal stem cells for producing a therapeutic drug for intervertebral discs, and the mesenchymal stem cells are derived from synovial membrane and form a three-dimensional scaffold-free artificial tissue.
- the mesenchymal stem cells may be those cultured in a serum-free manner.
- the mesenchymal stem cells may be derived from the human synovium.
- mesenchymal stem cells according to aspect 16 of the present invention is in any one of aspects 13 to 15, wherein the artificial tissue further contains an extracellular matrix derived from the mesenchymal stem cells.
- gMSC (registered trademark) 1 was transplanted to the nucleus pulposus removal site.
- a nucleus pulposus removal group in which the annulus fibrosus and skin were closed without transplanting anything, a nucleus reimplantation group in which the excised nucleus pulposus was reimplanted and the wound was closed, and a TEC group in which rat synovial TECs were transplanted were prepared.
- a Sham group was also created in which only the incision and expansion of the annulus fibrosus were performed without enucleation.
- CT score was evaluated according to the criteria shown in FIG. 2.
- FIG. 3 shows X-ray photographs of the surgical sites of the nucleus pulposus removal group, TEC group, and gMSC (registered trademark) 1 group.
- gMSC registered trademark
- the DHI and CT scores of each group are shown in Figure 4.
- the intervertebral disc height was maintained in the TEC group and the gMSC (registered trademark) 1 group, and the endplate damage score was also good.
- the gMSC (registered trademark) group 1 was superior to the TEC group at least in the effect of maintaining intervertebral disc height.
- Figure 5 shows the vimentin staining results of gMSC (registered trademark) group 1. As shown in FIG. 5, 6 weeks after the surgery, a thickened annulus fibrosus and human vimentin-positive cells were confirmed. The survival of cells derived from gMSC (registered trademark) 1 was confirmed even 6 weeks after the surgery, indicating good engraftment, and the effect of maintaining the hypertrophy of the surrounding annulus fibrosus and the intervertebral disc structure.
- gMSC registered trademark
- the present invention it is possible to provide a highly useful transplant therapeutic agent using mesenchymal stem cells, so it can be suitably used in regenerative medicine such as transplant therapy using mesenchymal stem cells.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Zoology (AREA)
- Medicinal Chemistry (AREA)
- Cell Biology (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Veterinary Medicine (AREA)
- Biotechnology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Organic Chemistry (AREA)
- Epidemiology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Developmental Biology & Embryology (AREA)
- Genetics & Genomics (AREA)
- Wood Science & Technology (AREA)
- Transplantation (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dermatology (AREA)
- Pharmacology & Pharmacy (AREA)
- Botany (AREA)
- Physical Education & Sports Medicine (AREA)
- Rheumatology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Immunology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Urology & Nephrology (AREA)
- Hematology (AREA)
- General Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- General Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Virology (AREA)
- Molecular Biology (AREA)
- Vascular Medicine (AREA)
- Biophysics (AREA)
Abstract
Description
本発明の一態様に係る椎間板治療剤は、滑膜由来の間葉系幹細胞が三次元構造を形成したスキャフォールドフリーの人工組織を含有する。
本明細書において「間葉系幹細胞」は、間葉系に属する組織に分化する体性幹細胞を意味する。また、間葉系幹細胞には、間葉系幹細胞からさらに特定の性質を有するものを単離したもの、間葉系幹細胞に対してサイトカイン刺激等何らかの刺激を与えたもの、間葉系幹細胞に対して遺伝子導入したもの等も包含される。例えば、MUSE細胞、MAPC細胞、SP-1細胞なども間葉系幹細胞に包含される。間葉系幹細胞は、増殖能と、骨細胞、軟骨細胞、筋肉細胞、ストローマ細胞、腱細胞、脂肪細胞等への分化能とを有する。間葉系幹細胞は、骨髄、脂肪細胞、滑膜細胞、歯槽骨、歯根膜等の成人の組織からだけでなく、胎盤、臍帯、臍帯血、胎児の種々の細胞等から単離されるものも知られている。
椎間板治療剤に含まれる人工組織を形成する滑膜由来の間葉系幹細胞を、無血清培養するために用いる無血清培地の一例について説明する。無血清培地を構成するための基礎培地は、当該分野において周知の動物細胞用培地であれば特に限定されず、好ましい基礎培地としては、例えば、Ham’s F12培地、DMEM培地、RPMI-1640培地、MCDB培地などが挙げられる。これらの基礎培地は、単独で使用されても、複数を混合して使用されてもよい。一実施形態において、無血清培地を構成するための基礎培地は、MCDBとDMEMとを1:1の比率で混合した培地が好ましい。
本発明の一態様に係る椎間板治療剤に含まれる人工組織は、滑膜由来の間葉系幹細胞が三次元構造を形成したスキャフォールドフリーの人工組織である。人工組織は、組織再生材料(TEC;Tissue Engineered Construct)であり得る。細胞懸濁液を患部に投与することにより細胞を移植する場合、投与される細胞が移植箇所から離脱しやすく、移植箇所に留まらないという報告がある。しかしながら、本発明の一態様に係る椎間板治療剤は、三次元構造であるスキャフォールドフリーの人工組織を含有しているので、細胞が移植箇所に生着しやすく、長時間治療効果を発揮させることができる。
本明細書において「スキャフォールドフリー(足場フリー、基盤材料なし;scaffold-free)」とは、人工組織を生産するときに従来使用されている材料(基盤材料=スキャフォールド)を実質的に含まないことをいう。そのようなスキャフォールドの材料としては、例えば、化学高分子化合物、セラミック、あるいは多糖類、コラーゲン、ゼラチン、ヒアルロン酸などの生物製剤などを挙げることができるがそれらに限定されない。スキャフォールドとは、実質的に固形であり、細胞又は組織を支持することができる強度を含む材料をいう。
本発明の一態様に係る椎間板治療剤は、間葉系幹細胞由来の細胞外マトリクスをさらに含有していてもよい。本明細書において「細胞外マトリクス」は、細胞外基質とも称される、上皮細胞及び非上皮細胞を問わず体細胞の間に存在する物質を意味している。
本発明の一態様に係る椎間板の治療方法は、滑膜由来の間葉系幹細胞が三次元構造を形成したスキャフォールドフリーの人工組織を投与する工程を含む。椎間板の治療方法において投与する人工組織を形成する間葉系幹細胞は、無血清培養されたものであってもよい。また、椎間板の治療方法において投与する人工組織を形成する間葉系幹細胞は、ヒトの前記滑膜由来であってもよい。さらに、椎間板の治療方法において投与する人工組織は、間葉系幹細胞由来の細胞外マトリクスをさらに含有していてもよい。すなわち、椎間板の治療方法における人工組織の一態様は、本発明の一態様に係る椎間板治療剤に含まれる人工組織であるため、人工組織についての説明は、椎間板治療剤における人工組織の説明を援用する。
本発明の一態様に係る間葉系幹細胞は、椎間板の治療における使用のための間葉系幹細胞であって、滑膜由来であり、三次元構造であるスキャフォールドフリーの人工組織を形成している。椎間板の治療における使用のための間葉系幹細胞は、無血清培養されたものであってもよい。また、椎間板の治療における使用のための間葉系幹細胞は、ヒトの前記滑膜由来であってもよい。さらに、椎間板の治療における使用のための間葉系幹細胞は、間葉系幹細胞由来の細胞外マトリクスをさらに含有していてもよい。すなわち、椎間板の治療における使用のための間葉系幹細胞は、本発明の一態様に係る椎間板治療剤に含まれる人工組織を形成する間葉系幹細胞であるため、間葉系幹細胞についての説明は、椎間板治療剤における間葉系幹細胞及び人工組織の説明を援用する。
本発明の一態様に係る椎間板治療薬を製造するための間葉系幹細胞の使用は、椎間板治療薬を製造するための間葉系幹細胞の使用であって、前記間葉系幹細胞は、滑膜由来であり、三次元構造であるスキャフォールドフリーの人工組織を形成している。椎間板治療薬を製造するための間葉系幹細胞の使用において、間葉系幹細胞は、無血清培養されたものであってもよい。また、椎間板治療薬を製造するための間葉系幹細胞の使用において、間葉系幹細胞は、ヒトの前記滑膜由来であってもよい。さらに、椎間板治療薬を製造するための間葉系幹細胞の使用において、人工組織は、間葉系幹細胞由来の細胞外マトリクスをさらに含有していてもよい。すなわち、椎間板治療薬を製造するための間葉系幹細胞の使用における人工組織の一態様は、本発明の一態様に係る椎間板治療剤に含まれる人工組織であるため、人工組織についての説明は、椎間板治療剤における人工組織の説明を援用する。
本発明の態様1に係る椎間板治療剤は、滑膜由来の間葉系幹細胞が三次元構造を形成したスキャフォールドフリーの人工組織を含有する。
(gMSC(登録商標)1及びラット滑膜TECの移植)
オスの10週齢SDラットを実験に用いた。無血清培養されたヒト滑膜由来の間葉系幹細胞が三次元構造を形成したスキャフォールドフリーの人工組織として、gMSC(登録商標)1(株式会社ツーセル製)を用いた。ラット滑膜由来の間葉系幹細胞が三次元構造を形成したスキャフォールドフリーの人工組織として、ラット滑膜由来の間葉系幹細胞を用いて、日本国特許第4522994号公報に記載の方法により生成したラット滑膜TECを用いた。
移植から6週間後に、三種混合麻酔を用いてラットを麻酔し、尾椎側面X線写真を撮影した。椎間板高をDisk Height Index(DHI)を用いて評価した。DHIは図1に示す部位を測定し、以下の式1により算出した。
パラフィン組織切片(5μm厚)を脱パラフィンした後、EDTA(AbcamTris-EDTAバッファー ab93684、80℃、15分)で抗原賦活化し、一次抗体はAbcam Anti-Vimentin antibody(ab16700、200倍希釈、室温1時間)、二次抗体はシンプルステインラットMAX-PO(ニチレイ、室温30分)を反応させ、DAB発色した(室温5分)。ヘマトキシリン溶液で核染色を行い封入した。
髄核摘出群、TEC群、及びgMSC(登録商標)1群の手術部位のX線写真を図3に示す。図3に示すように、gMSC(登録商標)1群は、TEC群と同様に終板変性が抑制されていた。
本発明は上述した各実施形態又は各実施例に限定されるものではなく、請求項に示した範囲で種々の変更が可能である。異なる実施形態又は実施例にそれぞれ開示された技術的手段を適宜組み合わせて得られる実施形態についても本発明の技術的範囲に含まれる。
Claims (4)
- 滑膜由来の間葉系幹細胞が三次元構造を形成したスキャフォールドフリーの人工組織を含有する、椎間板治療剤。
- 前記間葉系幹細胞は、無血清培養されたものである、請求項1に記載の椎間板治療剤。
- 前記間葉系幹細胞は、ヒトの前記滑膜由来である、請求項1又は2に記載の椎間板治療剤。
- 前記間葉系幹細胞由来の細胞外マトリクスをさらに含有する、請求項1又は2に記載の椎間板治療剤。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020257012890A KR20250067939A (ko) | 2022-09-20 | 2023-09-15 | 추간판 치료제 |
| CN202380066839.2A CN119907675A (zh) | 2022-09-20 | 2023-09-15 | 一种椎间盘治疗剂 |
| EP23868141.5A EP4591869A1 (en) | 2022-09-20 | 2023-09-15 | Intervertebral disc therapeutic agent |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022-149224 | 2022-09-20 | ||
| JP2022149224A JP2024043961A (ja) | 2022-09-20 | 2022-09-20 | 椎間板治療剤 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024063020A1 true WO2024063020A1 (ja) | 2024-03-28 |
Family
ID=90454411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2023/033663 Ceased WO2024063020A1 (ja) | 2022-09-20 | 2023-09-15 | 椎間板治療剤 |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP4591869A1 (ja) |
| JP (1) | JP2024043961A (ja) |
| KR (1) | KR20250067939A (ja) |
| CN (1) | CN119907675A (ja) |
| WO (1) | WO2024063020A1 (ja) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005012512A1 (en) | 2003-08-01 | 2005-02-10 | Norimasa Nakamura | Scaffold-free self-organized 3d synthetic tissue |
-
2022
- 2022-09-20 JP JP2022149224A patent/JP2024043961A/ja active Pending
-
2023
- 2023-09-15 CN CN202380066839.2A patent/CN119907675A/zh active Pending
- 2023-09-15 KR KR1020257012890A patent/KR20250067939A/ko active Pending
- 2023-09-15 EP EP23868141.5A patent/EP4591869A1/en active Pending
- 2023-09-15 WO PCT/JP2023/033663 patent/WO2024063020A1/ja not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005012512A1 (en) | 2003-08-01 | 2005-02-10 | Norimasa Nakamura | Scaffold-free self-organized 3d synthetic tissue |
| JP4522994B2 (ja) | 2003-08-01 | 2010-08-11 | 憲正 中村 | スキャフォールドフリー自己組織性三次元人工組織(Scaffold−freeSelf−Organized3Dsynthetictissue) |
Non-Patent Citations (4)
| Title |
|---|
| H. ISHIGURO, ACTA BIOMATERIALIA, vol. 87, 2019, pages 118 - 129 |
| TAKASHI KAITO ET AL.: "1-8-S11-2 Intervertebral disc regeneration by transplantation of three-dimensional composite derived from mesenchymal stem cells", THE JOURNAL OF JAPANESE ORTHOPAEDIC SURGICAL SOCIETY, NIPPON SEIKEI GEKA GAKKAI, TOKYO, JP, vol. 96, no. 8, 15 September 2022 (2022-09-15) - 14 October 2022 (2022-10-14), JP , pages S1611, XP009555214, ISSN: 0021-5325 * |
| TAKASHI KAITO ET AL.: "2-4-S14-3 Intervertebral disc regeneration using three-dimensional composite tissue created from mesenchymal stem cells", THE JOURNAL OF JAPANESE ORTHOPAEDIC SURGICAL SOCIETY, NIPPON SEIKEI GEKA GAKKAI, TOKYO, JP, vol. 95, no. 8, 1 January 2021 (2021-01-01) - 15 October 2021 (2021-10-15), JP , pages S1607, XP009555215, ISSN: 0021-5325 * |
| YOSHIKAWA HIDEKI, NORIMASA NAKAMURA, KOICHIRO TSUJI : "Non-clinical studies contributing to the application for regulatory approval of threedimensional artificial tissue derived from allogeneic synovial mesenchymal stem cells manufactured using a serum-free culture method", HEALTH, LABOR AND WELFARE SCIENTIFIC RESEARCH RESULTS DATABASE, 9 July 2018 (2018-07-09), XP093150951, Retrieved from the Internet <URL:https://mhlw-grants.niph.go.jp/project/24674> [retrieved on 20240412] * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN119907675A (zh) | 2025-04-29 |
| EP4591869A1 (en) | 2025-07-30 |
| KR20250067939A (ko) | 2025-05-15 |
| JP2024043961A (ja) | 2024-04-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20240182861A1 (en) | Isolated discogenic cells, methods of using, and methods of preparing same from mammalian tissue | |
| JP7113430B2 (ja) | 生体組織損傷の修復剤および当該修復剤の製造方法 | |
| EP3028722A1 (en) | Cartilage-damage treatment agent and method for producing same | |
| WO2005105992A1 (en) | Chondrocyte culture formulations | |
| WO2024063020A1 (ja) | 椎間板治療剤 | |
| AU2020354743B2 (en) | Method for manufacturing repairing agent for biological tissue damage, and repairing agent for biological tissue damage | |
| JP2024178803A (ja) | 関節軟骨治療剤 | |
| HK40119617A (en) | Isolated discogenic cells, methods of using, and methods of preparing same from mammalian tissue | |
| JP2024178805A (ja) | 関節軟骨再生材料 | |
| HK40022222A (en) | Isolated discogenic cells, methods of using, and methods of preparing same from mammalian tissue | |
| KR20120097815A (ko) | 양수 유래 줄기세포를 함유하는 요실금 치료제 | |
| HK1217213B (en) | Isolated discogenic cells, methods of using, and methods of preparing same from mammalian tissue |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 23868141 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202380066839.2 Country of ref document: CN |
|
| ENP | Entry into the national phase |
Ref document number: 20257012890 Country of ref document: KR Kind code of ref document: A |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 1020257012890 Country of ref document: KR |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2023868141 Country of ref document: EP |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 2023868141 Country of ref document: EP Effective date: 20250422 |
|
| WWP | Wipo information: published in national office |
Ref document number: 202380066839.2 Country of ref document: CN |
|
| WWP | Wipo information: published in national office |
Ref document number: 2023868141 Country of ref document: EP |