WO2008053892A1 - Produit pharmaceutique servant à favoriser la régénération fonctionnelle d'un tissu endommagé - Google Patents
Produit pharmaceutique servant à favoriser la régénération fonctionnelle d'un tissu endommagé Download PDFInfo
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- WO2008053892A1 WO2008053892A1 PCT/JP2007/071133 JP2007071133W WO2008053892A1 WO 2008053892 A1 WO2008053892 A1 WO 2008053892A1 JP 2007071133 W JP2007071133 W JP 2007071133W WO 2008053892 A1 WO2008053892 A1 WO 2008053892A1
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- A—HUMAN NECESSITIES
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- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/70—Carbohydrates; Sugars; Derivatives thereof
- A61K31/7088—Compounds having three or more nucleosides or nucleotides
- A61K31/711—Natural deoxyribonucleic acids, i.e. containing only 2'-deoxyriboses attached to adenine, guanine, cytosine or thymine and having 3'-5' phosphodiester links
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K38/00—Medicinal preparations containing peptides
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K38/00—Medicinal preparations containing peptides
- A61K38/16—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- A61K38/17—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K48/00—Medicinal preparations containing genetic material which is inserted into cells of the living body to treat genetic diseases; Gene therapy
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- A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
- A61P1/04—Drugs for disorders of the alimentary tract or the digestive system for ulcers, gastritis or reflux esophagitis, e.g. antacids, inhibitors of acid secretion, mucosal protectants
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P11/00—Drugs for disorders of the respiratory system
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P17/00—Drugs for dermatological disorders
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P17/00—Drugs for dermatological disorders
- A61P17/02—Drugs for dermatological disorders for treating wounds, ulcers, burns, scars, keloids, or the like
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P17/00—Drugs for dermatological disorders
- A61P17/14—Drugs for dermatological disorders for baldness or alopecia
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- 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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P37/00—Drugs for immunological or allergic disorders
- A61P37/02—Immunomodulators
- A61P37/06—Immunosuppressants, e.g. drugs for graft rejection
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- 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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P9/00—Drugs for disorders of the cardiovascular system
- A61P9/10—Drugs for disorders of the cardiovascular system for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- C07K14/52—Cytokines; Lymphokines; Interferons
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/5005—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells
- G01N33/5008—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells for testing or evaluating the effect of chemical or biological compounds, e.g. drugs, cosmetics
- G01N33/5044—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells for testing or evaluating the effect of chemical or biological compounds, e.g. drugs, cosmetics involving specific cell types
- G01N33/5073—Stem cells
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/68—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving proteins, peptides or amino acids
- G01N33/6863—Cytokines, i.e. immune system proteins modifying a biological response such as cell growth proliferation or differentiation, e.g. TNF, CNF, GM-CSF, lymphotoxin, MIF or their receptors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2500/00—Screening for compounds of potential therapeutic value
- G01N2500/10—Screening for compounds of potential therapeutic value involving cells
Definitions
- the present invention relates to a medicament for promoting functional regeneration of damaged tissue.
- Stem cells that can be mobilized to an injured site include tissue stem cells that exist in the damaged part or in the vicinity thereof, and bone marrow-derived stem cells that exist in peripheral blood. Recently, it has been reported that bone marrow-derived cells contribute to the regeneration of many damaged tissues, but the mechanism of bone marrow-derived cell recruitment to damaged tissues is unclear. Bone marrow-derived cells here are distinguished from hematopoietic stem cells capable of differentiating into blood cells (leukocytes, erythrocytes), and are present in stem cells or bone marrow represented by cells that have been called bone marrow mesenchymal stem cells. Tissue progenitor cell populations.
- Bone marrow mesenchymal stem cells are undifferentiated stem cells that have the ability to differentiate into osteoblasts, adipocytes, and chondrocytes, and further differentiate into other mesenchymal cells such as fibroblasts, muscle cells, stromal cells, and tendon cells. It is possible to do. In recent years, it has been proved that bone marrow mesenchymal stem cells differentiate into nerve cells, as well as epithelial cells (skin keratinocytes, etc.) and vascular endothelial cells (Non-patent Document 9).
- Tissue progenitor cells are defined as undifferentiated cells that have the ability to unidirectionally differentiate into specific tissue cells other than the blood system, and are used for the aforementioned mesenchymal tissue, epithelial tissue, nerve tissue, parenchymal organ, and vascular endothelium. Including undifferentiated cells having differentiation ability.
- HMGB1 High mobility group box 1 protein
- HMGB1 High mobility group box 1 protein
- DNA in the cell And regulates chromatin structure to regulate gene expression (Non-patent Document 1)
- 2) Inflammatory site force in TNF- ⁇ , IL-1, LPS Secreted by existing monocytes and macrophages and bound extracellularly to RAGE (glycation end product receptor) (Non-patent document 2) Inducing a strong inflammatory reaction (Non-patent document 3), 3 ) Released from cells necrotic due to septicemia to surrounding tissues (Non-patent document 4), 4) Involved in the development of inflammation in septic patients with severe infection (Non-patent document 5), 5)
- administration to the infarcted region promotes the division and proliferation of stem cells existing in the myocardium to promote myocardial regeneration and functional recovery (Patent Document 1),
- HMGB1 administered to the injured site is treated with vascular progenitor cells administered simultaneously. Induces muscle tissue regeneration (non-specialty) Permits 7), 8) In neurons, functions such as inducing neurite formation (Non-Patent Document 8) are known.
- mesenchymal stem cells that can be differentiated into bone marrow-derived stem cells, particularly osteoblasts, chondrocytes, and fat cells, into damaged tissues.
- brain tissue damage The main causes of brain tissue (cell) damage are cerebral contusion caused by trauma and cerebral ischemic disease. Other causes include those resulting from brain surgery such as brain tumor removal surgery. In particular, it is difficult to remove all gliomas that originate from brain parenchymal cells, and in order to avoid motor and language dysfunction, it is necessary to limit the excision to palliative removal. In addition, malignant gliomas have not been effective enough for immunotherapy and gene therapy, which have been actively studied in recent years, including chemotherapy and radiation therapy, which have a poor life prognosis. Therefore, it would be ideal if there is a treatment that removes as many tumor cells as possible and recovers the resulting brain function damage.
- Non-patent literature l Bustin et al., Mol Cell Biol, 19: 5237-5246, 1999
- Non-Patent Document 2 Horiet et al., J. Biol. Chem., 270, 25752-25761, 1995
- Non-Patent Document 3 Wang et al., Science, 285: 248-251, 1999
- Non-Patent Document 4 Muller et al., EMBO J, 20: 4337-4340, 2001
- Non-Patent Document 5 Wang et al., Science, 285: 248-251, 1999
- Non-Patent Document 6 Germani et al., J. Leukoc. Biol., 81, 2007 electronic journal version
- Non-Patent Document 7 Palumbo et al., J. Cell Biol., 164: 441-449, 2004
- Non-Patent Document 8 Merenmies et al., J. Biol. Chem., 266: 16722-16729, 1991
- Non-Patent Document 9 Yaojiong et al., Stem cells, 25: 2648-1659
- Patent Document 1 Special Table 2005-537253
- An object of the present invention is to isolate and identify a factor that mobilizes cells that differentiate into a damaged tissue to a damaged site, and to provide an invention using the factor.
- the present inventors examined the possibility that bone marrow-derived cells are mobilized from the extra-skin tissue to the transplanted skin piece in the process of engrafting the transplanted skin piece in the living tissue, and contribute to the regeneration of the skin tissue, 1) Bone marrow-derived cells are mobilized in large quantities in the transplanted skin, 2) The mobilized bone marrow-derived cells are dermal fibroblasts, adipocytes, muscle cells, vascular endothelial cells, epidermal keratinocytes in the transplanted skin pieces.
- HMGB1, HMGB2, and HMGB3 released from the necrotic tissue of the transplanted skin, and 4) Purified HMGB1, HMGB2, and HMGB3 promote the migration of mesenchymal stem cells that have been isolated and cultured from bone marrow.
- a tissue regeneration promoter containing the following components (a) to (i)! /;
- a tissue regeneration promotion kit containing the following components ( a ) to (i):
- An extract of cells produced by a method comprising a step of immersing cells in a solvent, wherein the extract has bone marrow-derived cell-inducing activity.
- a method for producing a cell extract having bone marrow-derived cell inducing activity comprising a step of immersing cells in a solvent.
- step (b) a step of bringing the extract obtained in step (a) into contact with immobilized heparin;
- a method for producing a heparin-binding fraction having bone marrow-derived cell-inducing activity including the following steps;
- step ⁇ the step of contacting the extract obtained in step ⁇ with immobilized heparin
- a bone marrow-derived cell inducer comprising:
- tissue regeneration promoter comprising: [12] The extract as described in [5] or the extract prepared by the method as described in [6], the fraction as described in [7] or the fraction as prepared by the method as described in [8] A kit for promoting tissue regeneration.
- a method for evaluating whether a cell extract contains a factor that induces a test cell comprising the following steps, wherein the test cell induction activity in step (b) is compared with a control: If it is high, the cell extract is judged to contain a factor that induces the test cell;
- step (b) A step of measuring the inducing activity of the test cell by the extract prepared in step (a).
- a method for screening a cell extract containing a factor for inducing a test cell comprising the following steps;
- the factor that induces the test cell is purified using the test cell induction activity as an index.
- a method for identifying a factor that induces a test cell comprising the step of:
- a method for inducing bone marrow-derived cells in damaged tissue comprising administering a substance described in any one of the following ⁇ to ⁇ to the damaged tissue:
- a method for promoting regeneration of damaged tissue comprising the step of administering a substance described in any of (a) to (i) below to any of the following:
- a method for promoting regeneration of damaged tissue comprising the step of administering the extract according to [5] or the extract produced by the method according to [6] and a tissue-damaged subject.
- a method for promoting regeneration of damaged tissue comprising the step of administering the fraction according to [7] or the fraction produced by the method according to [8] to a subject whose tissue is damaged.
- FIG. 1 is a diagram showing a method for preparing a GFP bone marrow transplanted mouse.
- FIG. 2 A photograph showing the accumulation of GFP fluorescence in transplanted skin pieces observed after skin transplantation to the back of mice transplanted with GFP bone marrow.
- the upper left photo shows the macroscopic image of the skin graft
- the upper middle photo shows the HE tissue image of the recipient skin near the boundary between the transplanted skin and the recipient skin (shown as “I”)
- the upper right photo shows the HE tissue image of the skin graft.
- the lower left photo shows the accumulation of GFP fluorescence in the skin graft
- the lower middle photo shows the enlarged image of the skin graft
- the lower right photo shows the accumulation of GFP fluorescence in the enlarged skin.
- FIG. 3 is a photograph showing bone marrow-derived epidermal cells and bone marrow-derived dermal fibroblasts accumulated on the skin grafted on the back of a GFP bone marrow-transplanted mouse.
- the first row from the left is DAPI staining (nuclear staining).
- the upper photo shows a weakly magnified image (100x) of the skin at the skin, and the middle photo shows its magnified image (200x).
- the lower row shows the hair follicle with a strong magnified image (200x).
- the second column from the left is the GFP fluorescence image of each region in the first column
- the third column from the left is the immunostained image of the keratin 5 (5)
- the fourth column from the left is the overlay of the respective fluorescence. Shows an image (Merge). Many GFP positive epidermal cells and dermal fibroblasts have been observed.
- FIG. 4 is a diagram showing a flow of identification of bone marrow-derived mesenchymal stem cell inducing factor in skin extract.
- FIG. 5 is a diagram showing a method for extracting regeneration-inducing factor (bone marrow-derived mesenchymal stem cell mobilization factor) from excised skin pieces.
- FIG. 6 is a photograph showing the results of measuring the bone marrow-derived mesenchymal stem cell migration activity of the skin extract using Boyden Chamber 1;
- the upper left photo shows the bone marrow mesenchyme that has migrated from the upper tank of Boyden's chamber 1 to the skin extract side (lower tank side) through a microscopic hole on the silicon film and adhered to the lower side of the silicon film.
- Stem cells stained with a blue dye are shown from the top immediately after the start of culture (Oh), 12 hours later (12h), and 24 hours later (24h) (4 wells each).
- the upper right photo shows a strong magnified image of Oh
- the lower left photo shows a 12h strong magnified image
- the lower right photo shows a 24h strong magnified image.
- Fig. 8 is a photograph showing the results of measuring the migration activity of bone marrow-derived mesenchymal stem cells of HMGB1 using a Boyden chamber.
- the upper two images are stained images of bone marrow-derived mesenchymal stem cells that have migrated into the skin extract, and the middle two images are stained images of bone marrow-derived mesenchymal stem cells that have migrated to the purified HMGB1 sample.
- FIG. 9 shows a method for measuring in vivo bone marrow-derived mesenchymal stem cell inducing activity.
- FIG. 13 A photograph 24 hours after the start of culture of migrating cells in the silicon tube.
- the photo on the left shows a bright field image of fibroblast-like cells and epithelial cell-like cells growing on a cultured plastic petri dish, and the photo on the right shows a GFP fluorescence image in the anther field.
- the left and right photos have the same field of view, the left photo is bright field, the right photo is through a fluorescent filter (B and D detect GFP fluorescence, F detects keratin 5 fluorescence) .
- FIG. 15 is a photograph of the HMGB family in a newborn mouse skin extract detected using the Western blot method.
- FIG. 16 shows MAP of HMGB family expression vector in mammalian cells.
- Cytomegalovirus enhancer has chicken ⁇ -actin promoter and synthesizes HMGB family cDNA (complementary DNA) that exists in the promoter stream in large quantities.
- FIG. 17 is a photograph showing the results of Western blot analysis of a purified recombinant Flag tag-HMGB family fusion protein expressed in HEK293 cells.
- FIG. 18 is a graph showing bone marrow mesenchymal stem cell migration activity of recombinant HMGB1 'HMGB2' HMGB3 using a boyden chamber. All the recombinant proteins showed migration activity compared to the control group.
- FIG. 22 This is a photograph in which the bone marrow mesenchymal stem cell migration activity of cultured cell lines HEK293 and HeLa extracts was confirmed using the Boyden chamber method. V and miscellaneous cultured cell lines also showed human bone marrow mesenchymal stem cell migration activity.
- Fig. 23A is a photograph of a mouse fixed on a stereotaxic apparatus, a midline incision in the head with a scalpel, and burr using a drill.
- Figure 23B is a photograph of a portion of the brain tissue aspirated by applying negative pressure to the brain using a syringe.
- Fig. 23A is a photograph of a mouse fixed on a stereotaxic apparatus, a midline incision in the head with a scalpel, and burr using a drill.
- Figure 23B is a photograph of a portion of the brain tissue aspirated by applying negative pressure to the brain using a syringe.
- FIG. 23C is a photograph after injection of the purified column of the column into the skin extract dissolved in the fibrin glue preparation (fibrinogen), followed by 5 ⁇ 1 injection of the fibrin glue preparation (thrombin).
- Figure 23D and Figure 23 ⁇ are photographs two weeks after treatment with the brain injury model. Compared with control 23D, accumulation of GFP-positive cells was observed in the skin extract of the 23% treated group with the purified purine column.
- Figures 23F and 23G are photographs 6 weeks after the brain injury model treatment. Compared to control 23F, accumulation of GFP-positive cells was observed in 23G of the treatment group using the purified fraction of palin column in the skin extract.
- the present invention provides a bone marrow-derived cell inducer comprising at least one of the components described in ⁇ to ⁇ below.
- bone marrow-derived cells for example, bone marrow-derived mesenchymal stem cells
- the inducer can be used as a reagent necessary for regenerative medicine, basic research for regenerative medicine development and clinical research.
- bone marrow-derived cells for example, bone marrow-derived mesenchymal stem cells
- test tube It is possible to conduct tissue regeneration induction studies by mobilization of bone marrow-derived cells (for example, bone marrow-derived mesenchymal stem cells).
- the above inducer is also used as a so-called prophylactic drug for preventing a decrease in tissue organ function due to a decrease in tissue stem cells, or for aging. Expected to be used as an anti-aging drug that delays the progress of change.
- the present invention also provides a tissue regeneration promoting agent or a tissue regeneration promoting kit containing at least one of the components described in the following (a) to (i).
- the tissue regeneration-promoting agent or tissue regeneration-promoting kit is administered at or near the damaged tissue site, so that bone marrow-derived cells circulating in the blood (for example, bone marrow-derived mesenchymal stem cells) are transferred to peripheral blood.
- the tissue regeneration promotion kit includes (1) the above extract or the fraction dissolved in fibrinogen, and (2) a tissue regeneration promotion kit containing thrombin, or (1) the above extract or the above Examples of the kit for promoting tissue regeneration include (2) fibrinogen and (3) thrombin. In the present invention, it can be force s using a commercially available fibrinogen and thrombin.
- the present invention relates to a method for producing an extract of cells having bone marrow-derived cell-inducing activity, including a step of immersing cells in a solvent.
- the present invention also relates to an extract of cells produced by the production method, which has bone marrow-derived cell inducing activity.
- tissue-derived cells cell lines established from tissue-derived cells (for example, Hela, the power exemplified by HEK293 are not limited to these), isolated Examples include cells, non-isolated cells (for example, cells present in isolated tissues), cells into which DNA encoding HMGB1, HMGB2, or HMGB3 protein has been introduced.
- the tissue may be any tissue, for example, living skin tissue, biopsy (surgical) tissue (brain, lung, heart, liver, stomach, small intestine, large intestine, kidney, kidney, bladder, spleen, uterus Testis, blood, etc.), but is not limited thereto.
- the solvent examples include physiological saline, PBS (Phosphate-buffered saline), and force S exemplified by TBS (Tris-buffered saline), but are not limited thereto.
- the time for immersing the cells and tissues in the solvent is a sufficient time to induce cell necrosis. That is, 1 to 48 hours (for example, 6 to 48 hours), preferably 12 to 24 hours. A certain force is not limited to this time. Therefore, “the process of immersing cells in a solvent” can be rephrased as “the process of immersing cells in a solvent for a sufficient time necessary to induce necrosis” and “the process of necrosing cells”.
- the temperature at which cells and tissues are immersed in a solvent is 4 ° C to 25 ° C (eg, 4 ° C to 8 ° C), preferably 4 ° C.
- the pH for immersing cells and tissues in a solvent is not limited to this, which is exemplified by pH 7 to 8, preferably pH 7.5.
- the force of the phosphate buffer having a concentration of 10 mM to 50 mM, preferably 10 to 20 mM as a component of the buffer solution is not limited thereto.
- the cells and tissues can be removed from the solvent containing the cells and tissues.
- the method for removing cells and tissues from the solvent is not particularly limited as long as it is a method well known to those skilled in the art.
- the force that can remove cells and tissues from the solvent by centrifuging at 4 ° C to 25 ° C (for example, 4 ° C) and gravity acceleration of 10G to 4000G (for example, 440G) and separating the supernatant.
- the supernatant can be used as a cell or tissue extract.
- the present invention relates to a method for producing a heparin-bound fraction having bone marrow-derived cell-inducing activity, which comprises the following steps.
- the present invention also relates to a heparin-binding fraction produced by the production method and having a bone marrow-derived cell-inducing activity.
- step (b) a step of bringing the extract obtained in step (a) into contact with immobilized heparin;
- Immobilized heparin is obtained by covalently binding heparin to an insoluble carrier.
- insoluble carrier carrier examples include Sepharose beads (3 ⁇ 4epharose 4B, 3 ⁇ 4epnarose 6B: E Healthcare), but are not limited thereto.
- Palin Hitrap Hepalin HP column: GE Healthcare may be used.
- the contact conditions of cell or tissue extract and immobilized heparin are about pH 7-8 (preferably pH 7.5), salt concentration of 0-200 mM, preferably about 100-200 mM. It is not limited to these.
- the time during which the extract and the immobilized heparin are in contact with each other is not particularly limited, but it is preferably maintained for 5 minutes or more from the viewpoint of sufficiently adsorbing the heparin-binding fraction to the immobilized heparin.
- the temperature is 4 to 8 ° C., preferably 4 ° C.
- the force is not limited to these.
- the elution conditions of the heparin-binding fraction adsorbed on the immobilized heparin are exemplified by pH 7-8 and salt concentration 200-1000 mM (preferably lOOOmM), but are not limited thereto. .
- the present invention relates to a method for producing an anion-exchanger-bound fraction having bone marrow-derived cell-inducing activity including the following steps.
- the present invention also relates to an anion exchanger-binding fraction produced by the production method and having a bone marrow-derived cell inducing activity.
- step (b) a step of bringing the extract obtained in step (a) into contact with immobilized heparin
- step (d) a step of contacting the heparin-binding fraction obtained in step (c) with an anion exchanger
- anion exchanger A step of eluting the anion exchanger-bound fraction from the anion exchanger.
- the anion exchanger is not limited to these, which can be exemplified by an exchanger using DEAE (diethylaminoethyl) or Q (quaternary ammonium).
- anion exchangers e.g., Sourcel5Q, Source30Q, MonoQ, MiniQ, PC3.2 / 3, Mini Q4.6 / 50 ⁇ , ⁇ Tra ibX Columns, niTrap SP HP, w Sepharose High Perrormance, Hiload 1 6/10 Q Sepharose HP, HiPrep 16/10 SP XL, Q Sepharose XL, HiPrer 16/10 Q FF, Hi Prep 16 / lODEAE FF, Q Sepharose Fast Flow, DEAE Sepharose Fast Flow (all using GE Healthcare) May be.
- anion exchangers e.g., Sourcel5Q, Source30Q, MonoQ, MiniQ, PC3.2 / 3, Mini Q4.6 / 50 ⁇ , ⁇ Tra ibX Columns, niTrap SP HP, w Sepharose High Perrormance, Hiload 1 6/10 Q Sepharose HP, HiPrep 16/10 SP XL, Q Sepharose XL, HiPrer 16/10 Q FF,
- the contact conditions between the heline-binding fraction and the anion exchanger are limited to pH 7 to 9 (preferably pH 8), salt concentration of 0 to 100 mM, preferably 50 mM, and so on. Absent.
- the time during which the extract and the anion exchanger are in contact with each other is not particularly limited, but it is preferably maintained for 5 minutes or more from the viewpoint of sufficiently adsorbing the anion exchanger bound fraction to the anion exchanger. .
- the temperature includes 4 to 16 ° C, preferably 4 ° C, but is not limited thereto.
- examples of elution conditions for the anion exchanger-bound fraction adsorbed on the anion exchanger are about pH 7-9 (preferably about pH 8) and salt concentration 100-2000 mM (preferably about lOOOOmM).
- Force S which is not limited to these.
- the present invention also relates to an inducer of bone marrow-derived cells containing the above extract or fraction, or the extract produced by the above method or the fraction produced by the above method.
- bone marrow-derived cells for example, bone marrow-derived mesenchymal stem cells
- the inducer can be used as a reagent necessary for regenerative medicine, basic research for regenerative medicine development and clinical research.
- bone marrow-derived cells for example, bone marrow-derived mesenchymal stem cells
- tissue regeneration induction studies by mobilization of bone marrow-derived cells (eg, bone marrow-derived mesenchymal stem cells) in vitro.
- regeneration of damaged tissue can be accelerated
- an inducer / promoter for functional tissue regeneration It can be expected to be used as a so-called preventive medicine that prevents a decrease in tissue / organ function due to a decrease in tissue stem cells, or as an anti-aging medicine that delays the progression of age-related changes.
- the present invention provides a tissue regeneration promoting agent or a tissue regeneration promoting kit comprising the above extract or fraction, or the extract produced by the method or the fraction produced by the method.
- the tissue to be regenerated is not particularly limited as long as it is damaged tissue, for example, living skin tissue, biopsy (surgical) tissue (brain, lung, heart, liver, stomach , Small intestine, large intestine, viscera, kidney, bladder, spleen, kidney, testis and blood).
- the tissue regeneration-promoting agent or tissue regeneration-promoting kit is administered at or near the damaged tissue site, so that bone marrow-derived cells circulating in the blood (eg, bone marrow-derived mesenchymal stem cells) are transferred to peripheral blood.
- the tissue regeneration promotion kit includes (1) the above extract or the fraction dissolved in fibrinogen, and (2) the tissue regeneration promotion kit containing thrombin, or (1) the above extract or the above fraction.
- a kit for promoting tissue regeneration comprising (2) fibrinogen and (3) thrombin can be exemplified. In the present invention, it can be determined by using commercially available fibrinogen or thrombin.
- Bone marrow-derived cells for example, bone marrow-derived mesenchymal stem cells
- the damaged tissue include tissues damaged by various pathological conditions causing ischemia, ischemia / hypoxia, trauma, burns, inflammation, autoimmunity, gene abnormality, etc. Is not to be done. Injured tissues also include necrotic tissues.
- the tissue in the present invention is not particularly limited as long as it is a tissue in which bone marrow-derived cells (for example, bone marrow-derived mesenchymal stem cells) can be differentiated.
- skin tissue, bone tissue, cartilage tissue, muscle tissue, adipose tissue examples include all tissues in the living body, including myocardial tissue, nervous system tissue, lung tissue, gastrointestinal tissue, liver * bile * winning tissue, and urinary organs.
- tissue regeneration promoter not only skin diseases such as refractory skin ulcer, skin wound, bullous disease, and alopecia, but also cerebral infarction, myocardial infarction, fracture, lung infarction, gastric ulcer, enteritis, etc. Tissue damage
- a treatment for inducing functional tissue regeneration becomes possible.
- Examples of animal species to which the above tissue regeneration promoter is administered include humans and non-human animals, and examples include humans, mice, rats, monkeys, pigs, inu, usagis, wilds, musters, guinea pigs and the like. However, it is not limited to these.
- the bone marrow-derived cells of the present invention are hematopoietic stem cells and cells other than leukocytes, erythrocytes, and platelets derived therefrom, and are present in stem cells or bone marrow represented by cells that have been called bone marrow mesenchymal stem cells.
- the bone marrow-derived cells of the present invention are cells that can be isolated by bone marrow blood collection or peripheral blood collection.
- Hematopoietic stem cells are non-adherent cells, and the bone marrow-derived cells of the present invention can be obtained as adherent cells by mononuclear cell fraction cell culture in blood obtained by bone marrow blood collection or terminal blood collection.
- the bone marrow-derived cells of the present invention contain mesenchymal stem cells, and can be identified by osteoblasts (identified by recognizing calcium deposition when differentiation is induced), chondrocytes (alcian blue staining positive, safranin-0 staining). Can be identified by positive), adipocytes (can be identified by positive Sudan III staining), mesenchymal cells such as fibroblasts, smooth muscle cells, stromal cells, tendon cells, nerve cells, epithelial cells (For example, epidermal keratinocytes and intestinal epithelial cells express the cytokeratin family), and preferably have the ability to differentiate into vascular endothelial cells, but the differentiated cells are not limited to the above cells. In addition, it also includes the ability to differentiate into parenchymal organ cells such as kidneys and viscera.
- bone marrow-derived mesenchymal stem cells are cells existing in the bone marrow, and are collected directly from the bone marrow or indirectly from other tissues (mesenchymal tissues such as blood, skin, and fat). It is a cell that can be cultured and proliferated as an adherent cell (made of plastic or glass), and has the ability to differentiate into mesenchymal tissues such as bone, cartilage, and fat. It can be obtained by collecting peripheral blood or collecting it from mesenchymal tissue. Bone marrow-derived mesenchymal stem cells also have the ability to differentiate into epithelial tissues such as keratinocytes that constitute the skin by administering cells once attached to the culture dish to the damaged part of the living body! Also has features.
- the bone marrow-derived mesenchymal stem cells of the present invention are pluripotent stem cells, which can be identified by osteoblasts (which can be identified by the recognition of calcium deposition when differentiation is induced), chondrocytes (Alcian blue) In addition to staining positive, safranin-0 staining positive, etc.), adipocytes (identifiable by Zudan III staining positive, etc.), for example, fibroblasts, smooth muscle cells, skeletal muscle cells, stromal cells, tendon cells, etc.
- epidermal keratinocytes intestinal epithelial cells are cytokeratin family
- It preferably has the ability to differentiate into endothelial cells, and further to organ cells such as liver, kidney, and viscera.
- the differentiated cells are not limited to the above cells.
- human bone marrow mesenchymal stem cells are exemplified by bone marrow blood collection, peripheral blood blood collection, fat collection, and cells that can be obtained as adherent cells by culturing directly or after separation of mononuclear cell fraction. Is not to be done.
- As a marker of human bone marrow mesenchymal stem cells is exemplified by bone marrow blood collection, peripheral blood blood collection, fat collection, and cells that can be obtained as adherent cells by culturing directly or after separation of mononuclear cell fraction. Is not to be done.
- Power S that can be exemplified by all or part of Lin negative, CD45 negative, CD44 positive S, but is not limited to these.
- mouse bone marrow mesenchymal stem cells are not limited to the power that can be exemplified by, for example, cells that can be obtained by the method described in the Examples.
- markers for mouse bone marrow mesenchymal stem cells include, but are not limited to, all or a part of Lin negative, CD45 negative, CD44 positive, Sca_l positive, c_kit negative.
- Tissue progenitor cells are defined as undifferentiated cells that have the ability to unidirectionally differentiate into specific tissue cells other than the blood system, and are applied to the mesenchymal tissue, epithelial tissue, nerve tissue, parenchymal organ, and vascular endothelium described above. Including undifferentiated cells having differentiation ability.
- the extract, the heparin-binding fraction, the anion exchanger-bound fraction, or the components described in (a) to (i) above is not particularly limited as long as it does not inhibit the induction of bone marrow-derived cells (for example, bone marrow-derived mesenchymal stem cells) or the promotion of tissue regeneration.
- the tissue regeneration promoter of the present invention includes at least one of the extract, the heparin binding fraction, the anion exchanger binding fraction, or the components described in (a) to (i) above.
- HMGB1, HMGB2, or HMGB3 In addition to one component, related molecules (group) that enhance the functional tissue regeneration inducing function of HMGB1, HMGB2, or HMGB3, molecules that suppress actions other than the expected effects of HMGB1, HMGB2, or HMGB3 (group) ), Proliferation of bone marrow-derived cells (eg, bone marrow-derived mesenchymal stem cells) And factors that control differentiation, these factors, or other factors that enhance and maintain cell function.
- the animal species that is the source of the extract, heparin-binding fraction, anion exchanger-binding fraction, HMGB1, HMGB2, or HMGB3 protein in the inducer or tissue regeneration promoter of the present invention is a human or non-human animal.
- force S that can be exemplified by humans, mice, rats, monkeys, pigs, rabbits, rabbits, wilds, musters, guinea pigs, etc., and the same animal species as the animal species to which the above extract is administered. preferable.
- the HMGB1 protein in the inducer or tissue regeneration promoter of the present invention is not limited to force S, which can be exemplified by a protein containing the amino acid sequence described in SEQ ID NO: 1, 3, or 5.
- the HMGB1 protein of the present invention also includes proteins functionally equivalent to the protein comprising the amino acid sequence set forth in SEQ ID NO: 1, 3 or 5. Examples of such a protein include 1) an amino acid sequence in which one or more amino acids are substituted, deleted, inserted, and / or added in the amino acid sequence described in SEQ ID NO: 1, 3 or 5.
- a protein encoded by DNA that hybridizes under stringent conditions which is an isolated protein that is functionally equivalent to a protein comprising the amino acid sequence set forth in SEQ ID NO: 1, 3, or 5. It is done.
- the HMGB2 protein in the inducer or tissue regeneration promoter of the present invention is not limited to force S, which can be exemplified by a protein comprising the amino acid sequence described in SEQ ID NO: 7, 9, or 11.
- the HMGB2 protein of the present invention also includes proteins functionally equivalent to the protein comprising the amino acid sequence set forth in SEQ ID NO: 7, 9, or 11. Examples of such a protein include 1) an amino acid sequence in which one or more amino acids are substituted, deleted, inserted and / or added in the amino acid sequence described in SEQ ID NO: 7, 9 or 11.
- An isolated protein functionally equivalent to a protein comprising the amino acid sequence set forth in SEQ ID NO: 7, 9 or 11, and 2) a base sequence set forth in SEQ ID NO: 8, 10 or 12
- a protein encoded by a DNA that hybridizes under stringent conditions with a DNA containing the amino acid sequence set forth in SEQ ID NO: 7, 9, or 11 An isolated protein functionally equivalent to the
- the HMGB3 protein in the inducer or tissue regeneration promoter of the present invention is not limited to the ability that can be exemplified by the protein comprising the amino acid sequence set forth in SEQ ID NO: 13 or 15.
- the HMGB3 protein of the present invention also includes proteins functionally equivalent to the protein comprising the amino acid sequence set forth in SEQ ID NO: 13 or 15. Examples of such a protein include 1) an amino acid sequence in which one or more amino acids are substituted, deleted, inserted and / or added in the amino acid sequence set forth in SEQ ID NO: 13 or 15.
- An isolated protein that is functionally equivalent to a protein comprising the amino acid sequence set forth in SEQ ID NO: 1, 3, 5, 7, 9, 11, 13 or 15 is SEQ ID NO: 1, 3, 5, 7 9, 11, 13, or 15 can be a protein homologue or paralogue.
- a protein functionally equivalent to the protein comprising the amino acid sequence set forth in SEQ ID NO: 1, 3, 5, 7, 9, 11, 13 or 15 is prepared by a method known by those skilled in the art (Experimental Medicine separate volume 'genes Engineering Handbook, PP246-251, Yodosha, 1991).
- bone marrow-derived cells for example, bone marrow-derived mesenchymal stem cells
- a protein having an inducing activity As a protein functionally equivalent to the protein comprising the amino acid sequence described in SEQ ID NO: 1, 3, 5, 7, 9, 11, 13 or 15, bone marrow-derived cells (for example, bone marrow-derived mesenchymal stem cells) And a protein having an inducing activity.
- the amino acid sequence described in SEQ ID NO: 1, 3, 5, 7, 9, 11, 13, or 15 consists of an amino acid sequence in which one or more amino acids are substituted, deleted, inserted, and / or added.
- a protein functionally equivalent to a protein comprising the amino acid sequence set forth in SEQ ID NO: 1, 3, 5, 7, 9, 11, 13, or 15 includes a naturally occurring protein.
- eukaryotic genes have a polymorphism, as is known for interferon genes and the like.
- One or more amino acids may be substituted, deleted, inserted and / or added due to a change in the base sequence caused by this polymorphism.
- mutant proteins are also included in the present invention.
- substitution of base pairs by nitrite treatment of DNA is known (Hirose, S. et al., Proc. Natl. Acad. Sci. USA., 79: 7258-7260, 1982). In this method, mutations are introduced! / By treating the segment with nitrous acid, it is possible to introduce base pair substitution randomly in a specific segment.
- a gapped duplex method (Kramer W. and Fritz HJ., Methods in Enzymol., 154: 350-367, 1987).
- a circular double-stranded vector that clones the gene to be mutated is made into a single strand, and a synthetic oligonucleotide having a mutation at the target site is hybridized.
- Complementary single-stranded DNA derived from a vector that has been linearized by cutting with a restriction enzyme is annealed to the circular single-stranded vector, and the gap between the synthetic nucleotide is filled with DNA polymerase and further ligated. To make a complete double-stranded circular vector.
- the number of amino acids to be modified is typically within 50 amino acids, preferably within 30 amino acids, and more preferably within 5 amino acids (eg, 1 amino acid).
- the protein of the present invention is a protein to which a conservative substitution has been added in the above amino acid substitution, comprising a protein comprising the amino acid sequence set forth in SEQ ID NO: 1, 3, 5, 7, 9, 11, 13 or 15. Functionally equivalent proteins are included. Conservative substitution is considered to be important in the case of substituting amino acids in domains important for protein activity. Such conservative substitutions of amino acids are well known to those skilled in the art.
- amino acid groups corresponding to conservative substitutions include basic amino acids (eg, lysine, arginine, histidine), acidic amino acids (eg, aspartic acid, glutamic acid), uncharged polar amino acids (eg, glycine, asparagine).
- basic amino acids eg, lysine, arginine, histidine
- acidic amino acids eg, aspartic acid, glutamic acid
- uncharged polar amino acids eg, glycine, asparagine
- Glutamine serine, threonine, tyrosine, cysteine
- non-polar amino acids eg, alanine, Norin, leucine, isoleucine, proline, phenylalanine, methionine, tryptophan
- ⁇ -branched amino acids eg, threonine, Norin, Isoleucine
- aromatic amino acids for example, tyrosine, phenylarayun, tryptophan, histidine
- a hybridizer As a method for obtaining a protein functionally equivalent to the protein comprising the amino acid sequence described in SEQ ID NO: 1, 3, 5, 7, 9, 11, 13 or 15, a hybridizer
- the method of using Chillon can be mentioned. That is, DNA encoding the HMGB1, HMGB2, or HMGB3 protein according to the present invention as shown in SEQ ID NO: 2, 4, 6, 8, 10, 12, 14, or 16 or a fragment thereof is used as a probe and hybridized therewith. DNA can be isolated. When hybridization is performed under stringent conditions, highly homologous DNA is selected as the base sequence and the resulting isolated protein is functionally compatible with HMGB1, HMGB2, or HMGB3 proteins. Increased likelihood of containing equivalent protein.
- a highly homologous base sequence can show, for example, 70% or more, preferably 90% or more identity.
- the stringent conditions specifically indicate conditions such as 6 X SSC, 40% formamide, hybridization at 25 ° C, and washing at 1 X SSC, 55 ° C. be able to.
- the stringency depends on conditions such as salt concentration, formamide concentration, and temperature, but those skilled in the art will readily set these conditions to obtain the required stringency.
- homologs of HMGB1, HMGB2, or HMGB3 proteins other than the protein containing the amino acid sequence described in SEQ ID NO: 1, 3, 5, 7, 9, 11, 13 or 15 can be obtained.
- the encoding DNA can be isolated.
- a protein comprising the amino acid sequence of SEQ ID NO: 1, 3, 5, 7, 9, 11, 13, or 15 A protein functionally equivalent to the quality usually has high homology with the amino acid sequence set forth in SEQ ID NO: 1, 3, 5, 7, 9, 11, 13, or 15.
- High homology refers to sequence identity of at least 30% or more, preferably 50% or more, more preferably 80% or more (eg, 95% or more).
- the identity of base sequences and amino acid sequences can be performed using a homozygous search site using the Internet [eg, FASTA, BLAST, PS to BLAST, and SSEARCH in Japan DNA Data Bank (DDBJ).
- the protein according to the present invention or a functionally equivalent protein thereof is subjected to various modifications such as physiological modifications such as sugar chains, labels such as fluorescent or radioactive substances, or fusion with other proteins. It can be an added protein.
- the modification by the sugar chain may be different depending on the host to be expressed depending on the host to be expressed.
- any HMGB1, HMGB2 or HMGB2 according to the present invention may be used as long as it exhibits the same properties as the HMG Bl, HMGB2 or HMGB3 protein disclosed herein.
- HMGB3 protein or functionally equivalent protein may be used as long as it exhibits the same properties as the HMG Bl, HMGB2 or HMGB3 protein disclosed herein.
- HMGB1, HMGB2, or HMGB3 protein is not only a biomaterial but also a The gene to be loaded can be incorporated into an appropriate expression system and obtained as a recombinant.
- the DNA encoding HMGB1, HMGB2, or HMGB3 protein described above may be incorporated into an appropriate expression system for expression.
- Examples of host / vector systems applicable to the present invention include the expression vector pGEX and E. coli.
- pGEX can express foreign genes as fusion proteins with dartathione S-transferase (GST) (Gene, 67: 31-40, 1988), so it incorporates genes encoding HMGB1, HMGB2, or HMGB3 proteins.
- GST dartathione S-transferase
- IPTG isopropylthio- ⁇ -D-galacto side
- HMGB1, HMGB2, or HMGB3 proteins include the following.
- vectors for expression of fusion tannin using histidine tag, HA tag, FLAG tag, etc. are commercially available.
- yeast it is known that yeasts of the genus Pichia are effective for the expression of proteins having sugar chains.
- expression systems using baculovirus vectors that host insect cells are also useful (Bio / Technology, 6: 47-55, 1988).
- mammalian cells are used for vector transfection using promoters such as CMV, RSV, or SV40, and any of these host / vector systems can be HMGB1, HMGB2, or It can be used as an expression system for HMGB3 protein.
- the gene can be introduced using a viral vector such as a retrovirus vector, an adenovirus vector, and an adeno-associated virus vector.
- the obtained protein of the present invention can be isolated from the inside of a host cell or extracellular (such as a medium) and purified as a substantially pure and homogeneous protein.
- separation and purification methods used in normal protein purification can be used. It is not limited at all. For example, select chromatography column, filter, ultrafiltration, salting out, solvent precipitation, solvent extraction, distillation, immunoprecipitation, SDS-polyacrylamide gel electrophoresis, isoelectric focusing, dialysis, recrystallization, etc. When combined, they can separate and purify proteins.
- chromatography examples include affinity chromatography, ion exchange chromatography, hydrophobic chromatography, gel filtration, reverse phase chromatography, adsorption chromatography, etc. (Marshak et al., Strategies) for Protein Purification a nd Characterization: A Laboratory Course Manual. Ed Daniel R. Cold Spring Harbor Laboratory Press, 1996). These chromatography can be performed using liquid phase chromatography, for example, liquid phase chromatography such as HPLC and FPLC.
- the protein of the present invention is preferably a substantially purified protein.
- substantially purified means that the purity of the protein of the present invention (ratio of the protein of the present invention in the whole protein component) is 50% or more, 60% or more, 70% or more, 80% or more, It means 90% or more, 95% or more, 100% or close to 100%. The upper limit close to 100% depends on the purification technique and analysis technique of those skilled in the art, and is, for example, 99.999%, 99.99%, 99.9%, 99%, etc.
- a protein purified by any purification method is included in the substantially purified protein as long as it has the above-described degree of purification.
- a substantially purified protein can be exemplified by appropriate selection or combination, but is not limited thereto.
- the cells that release or secrete HMGB1, HMGB2, or HMGB3 protein in the inducer or tissue regeneration promoter of the present invention basically correspond to all tissue-derived cells in vivo.
- Examples of cells that can be easily collected and cultured include fibroblasts (for example, normal skin fibroblasts and cell lines derived therefrom), but are not limited thereto.
- cells that secrete HMGB1, HMGB2, or HMGB3 protein may be DNA encoding HMGB1, HMGB2, or HMGB3 protein, or HMG Binds DNA encoding the secretion signal (ATG CAG ACA GAC ACA CTC CTG CTA TGG GTA CTG CTG CTG T GG GTT CCA GGT TCC ACT GGT GAC; SEQ ID NO: 17) to the DNA encoding the Bl, HMGB2, or HMGB3 protein
- a vector prepared by inserting the prepared DNA into a publicly known expression vector or gene therapy vector is used for mammalian cells such as fibroblasts (for example, normal skin fibroblasts and cell lines derived therefrom) It can also be produced by introducing it into insect cells or other cells.
- fibroblasts for example, normal skin fibroblasts and cell lines derived therefrom
- the DNA encoding the HMGB1, HMGB2, or HMGB3 protein in the inducer or tissue regeneration promoter of the present invention may be genomic DNA or genomic DNA as long as it encodes an HMGB1, HMGB2, or HMGB3 protein. It may be natural DNA or artificially synthesized DNA. DNA encoding HMGB1, HMGB2, or HMGB3 protein is usually contained in the inducer or tissue regeneration promoter of the present invention in a state of being inserted into a vector (for example, a gene therapy vector).
- a vector for example, a gene therapy vector
- the vector for gene therapy in the present invention includes plasmid vectors, retrovirus vectors, lentiwinoles vectors, adenowinoles vectors, adenoassociate winoles vectors, Sendai winoles betaters, Sendai winoles envelope vectors, nopiroman virus vectors.
- the force which can be illustrated is not limited to these.
- the gene therapy vector may contain a promoter DNA sequence that effectively induces gene expression, a factor that controls gene expression, and a molecule that is necessary to maintain the stability of DNA.
- a partial peptide of HMGB1, HMGB2, or HMGB3 protein which is a bone marrow-derived cell (for example, bone marrow-derived mesenchymal stem cell)
- a peptide having an inducing activity, a cell secreting the partial peptide, or a vector inserted with a DNA encoding the partial peptide can also be contained.
- the administration method of the inducer or tissue regeneration promoter of the present invention may be orally or parenterally administered.
- Specific examples of such administration methods include injection administration, nasal administration, pulmonary administration, and transdermal administration.
- injection administration include, for example, intravenous injection, intramuscular injection, intraperitoneal injection, subcutaneous injection, etc.
- the inducer or tissue regeneration promoter of the present invention is systemically or locally (for example, subcutaneous, intradermal, skin).
- the administration method can be appropriately selected depending on the age and symptoms of the patient.
- the dose can be selected in the range of O.OOOOOOlmg to lOOOmg per kg body weight. Alternatively, for example, the dose can be selected in the range of 0.00001 to 100000 mg / body per patient. Even when cells that secrete HMGB1, HMGB2, or HMGB3 proteins or gene therapy vectors containing HMGB1, HMGB2, or HMGB3 protein-encoded DNA are administered, HMGB1, HMGB2, or HMGB3 It is possible to administer the dose so that the amount is within the above range. However, the inducer and tissue regeneration promoter of the present invention are not limited to these doses.
- the inducer or tissue regeneration promoter of the present invention can be formulated according to a conventional method (for example, Remingtons Pharmaceutical Science, latest edition, MarK Publishing and ompany, Easton, USA).
- the carrier and additives to be used may be included.
- surfactants, excipients, coloring agents, flavoring agents, preservatives, stabilizers, buffering agents, suspending agents, tonicity agents, binders, disintegrating agents, lubricants, fluidity promoters, flavoring agents
- the present invention is not limited to these, and other commonly used carriers can be used as appropriate.
- Specific examples include light anhydrous silicic acid, lactose, crystalline cellulose, mannitol, starch, carmellose calcium, callus, polybulassal cetylaminoacetate, polybulurpyrrolidone, gelatin, medium-chain fatty acid tridalylide, polyoxy
- Examples include ethylene hydrogenated castor oil 60, sucrose, carboxymethylcellulose, corn starch, and inorganic salts.
- the use of the inserted vector, the partial peptide of the HMGB1, HMGB2, or HMGB3 protein, the cell secreting the partial peptide, or the vector encoding the DNA encoding the partial peptide is as follows (1) or (2) It can also be expressed as
- Examples of subjects whose tissues have been damaged include humans and non-human animals, such as humans, mice, rats, monkeys, pigs, nu, magpies, moths, musters, and guinea pigs. Not limited.
- the present invention is a method for evaluating whether or not a cell or tissue extract contains a factor that induces a test cell, comprising the following steps, the test cell in step (b): A method for determining that a factor that induces a test cell is contained in a cell or tissue extract when the inducing activity of is higher than that of a control is provided.
- step (b) A step of measuring the inducing activity of the test cell by the extract prepared in step (a).
- the test cell in the present invention is a cell (damaged cell) that may contribute to regeneration of damaged tissue. As long as it can be expressed as a cell expected to induce tissue regeneration), there is no particular limitation.
- Test cells in the present invention include, but are not limited to, undifferentiated cells and cells in various stages of differentiation.
- the test cells in the present invention include, but are not limited to, stem cells and non-stem cells.
- examples of the test cell in the present invention include circulating cells and non-circulating cells. The non-circulating cells can be exemplified by tissue-settlement cells.
- examples of the test cell in the present invention include circulating blood cells and circulating non-blood cells.
- examples of the test cell in the present invention include cells that may be required for regenerating damaged tissue.
- test cells in the present invention include bone marrow-derived cells, bone marrow-derived hematopoietic cells, bone marrow-derived mesenchymal cells, cells derived from damaged tissues, and tissue derived from the same type of tissue that requires regeneration due to damage.
- Cells, tissue-derived cells different from tissues that need to be regenerated due to damage tissue-derived cells of individuals with damaged tissues, tissue-derived cells of the same species other than individuals with damaged tissues, and individuals with damaged tissues Other than these, tissue-derived cells of different individuals, cell lines established from the above-mentioned cells and tissue-derived cells, tissue-derived cancer cells described above, cells obtained by genetically modifying the above-described cells, and the like. Not limited.
- These cells include cells having the characteristics described above.
- Test cells in the present invention include bone marrow, damaged tissue, tissue of the same type as tissue that is required to be regenerated due to damage, tissue different from tissue that is required to be regenerated due to damage, and tissue of an individual having damaged tissue. Examples thereof include cells isolated directly or indirectly from tissues of the same species other than individuals having damaged tissues, or tissues of heterologous individuals other than individuals having damaged tissues.
- the test cells in the present invention include bone marrow, damaged tissue, tissue of the same type as tissue that needs to be regenerated due to damage, tissue different from tissue that needs to be regenerated due to damage, and individuals having damaged tissue.
- Examples also include cultured cells derived from tissues, tissues of the same species other than individuals having damaged tissues, or tissues of heterologous individuals other than individuals having damaged tissues.
- the test cells in the present invention include bone marrow, damaged tissue, tissue of the same type as tissue that requires regeneration due to damage, tissue different from tissue that requires regeneration due to damage, tissue of an individual having damaged tissue, damage Tissues of allogeneic individuals other than those with tissues, or Examples also include cells obtained by modifying cells derived from tissues of different individuals other than individuals having damaged tissues or cultured cells by genetic engineering techniques or cell biological techniques.
- test cells in the present invention include bone marrow, damaged tissue, tissue of the same type as tissue that requires regeneration due to damage, tissue different from tissue that requires regeneration due to damage, individual tissue having damaged tissue, Examples also include tumor cells derived from tissues of the same species other than individuals having damaged tissues, or tissues of different individuals other than individuals having damaged tissues.
- test cell in the present invention examples include a cell population containing a plurality of single cell populations having specific properties, or a single cell population having specific properties.
- Specific examples of the former include cells collected directly or indirectly from bone marrow or damaged tissues (blood, skin, fat, etc.), and examples of the latter include bone marrow-derived mesenchymal stem cells and skin fountain fibroblasts.
- the force s that can be exemplified is not limited to this.
- cells or tissues are first immersed in a solvent.
- the cells are not particularly limited, but tissue-derived cells, tissue-derived cell forces, established cell lines (for example, Hela, force S that can be exemplified by HE 293, but not limited thereto), isolation Examples thereof include cells that have been isolated, cells that have not been isolated (for example, cells that are present in isolated tissues), cells into which DNA encoding HMGB1, HMGB2, or HMGB3 proteins has been introduced.
- the tissue may be any tissue, for example, living skin tissue, biopsy (surgical) tissue (brain, lung, heart, liver, stomach, small intestine, large intestine, kidney, kidney, bladder, spleen, uterus , Testis, blood, etc.) and damaged tissues.
- the solvent is not limited to the forces exemplified by physiological saline, PBS, and TBS.
- the time for immersing the cells and tissues in the solvent is preferably a sufficient time (usually 24 hours or more) necessary to induce cell necrosis, but is not limited to this time.
- the cells and tissues can be removed from the solvent containing the cells and tissues after the cells and tissues are immersed in the solvent.
- the method for removing cells and tissues from the solvent is not particularly limited as long as it is a method well known to those skilled in the art.
- Test cell induction activity is, for example, the force that can be measured by the method described in the Examples, but is not limited thereto, and can also be measured by other methods for measuring cell migration ability in vitro or in vivo.
- the cell-derived extract or tissue-derived extract and the test cell are brought close to each other across, for example, a membrane having a hole (for example, a membrane having a hole of 8 meters). Next, it is confirmed whether or not the test cell migrates to the cell or tissue extract side.
- an extract of cells or tissues is administered to the GFP bone marrow transplanted mouse described in the Examples.
- a GFP bone marrow transplanted mouse is prepared by transplanting bone marrow cells isolated from a transgenic mouse (GFP mouse) into which an enhanced green fluorescent protein (EGFP) gene has been introduced into a lethal radiation irradiated mouse. That power S. More specifically, bone marrow cells (about 10 5 cells / mouse) collected from the long bones of GFP mice were administered into the tail vein of mice immediately after irradiation with lethal radiation (10 Gy), and engraftment was performed. Wait (usually more than 6 weeks are required). Next, it is confirmed whether or not the GFP positive bone marrow-derived cell force cell or tissue-derived extract as a test cell is mobilized to the administration site.
- GFP mouse transgenic mouse
- EGFP enhanced green fluorescent protein
- the present invention also provides a method for screening a cell or tissue extract containing a factor that induces a test cell, comprising the following steps.
- the present invention induces a test cell from an extract determined to contain a factor that induces the test cell by the evaluation method or the screening method, using the test cell induction activity as an index.
- a method for identifying a factor that induces a test cell comprising the step of purifying the factor.
- the purification of the factor that induces the test cell is not limited in any way by using the separation and purification methods used in normal protein purification. For example, select chromatography column, filter, ultrafiltration, salting out, solvent precipitation, solvent extraction, distillation, immunoprecipitation, SDS-polyacrylamide gel electrophoresis, isoelectric focusing, dialysis, recrystallization, etc. When combined, it is possible to separate and purify proteins.
- the purified factor can be identified by methods well known to those skilled in the art, such as mass spectrometry. By using the identified factors, regeneration of damaged tissue can be promoted. Therefore, the factor is a factor that promotes regeneration of damaged tissue or a factor that contributes to regeneration of damaged tissue. It is possible to express S. The factor can also be expressed as a candidate that promotes regeneration of damaged tissue or a candidate that contributes to regeneration of damaged tissue.
- a single cell population having a specific property may be migrated from a cell population containing a plurality of single cell populations having a specific property.
- the method of the present invention identifies both a single cell population having specific properties and an agent that induces the cell population.
- Newborn mouse skin female was transplanted to the dorsal skin of GFP bone marrow transplanted mice obtained after engraftment of transplanted bone marrow cells (6 weeks).
- the transplanted skin piece was collected by biopsy under inhalation anesthesia, and frozen skin (6 m) was prepared using a microtome with a cooling device, fixed with 4% paraformaldehyde (30 minutes), and cell nuclei in tissue were DAPI. After staining and immunostaining with an epidermal cell-specific keratin 5 antibody, the tissue was encapsulated and the presence of GFP-positive bone marrow-derived cells was examined with a confocal laser microscope. In addition, some specimens were examined for tissue structure by HE staining. Results: In the living skin transplantation system for mice transplanted with GFP bone marrow, a strong accumulation of GFP fluorescence consistent with the regenerated skin area was observed (Fig. 2).
- mice bone marrow-derived mesenchymal stem cells were collected from the bone of the femur or the crus, 10% fetal ⁇ shea serum free D-MEM the (Na Ca lai Co.) Cell culture medium was seeded on a cell culture dish and cultured under conditions of 37 ° C and carbon dioxide concentration of 5%. When the area occupied by the cells grows to 70 to 100% of the culture dish bottom area, the cells are detached from the culture dish using 0.25% trypsin lmMEDTA (Nacalai), and the same conditions are applied. And subcultured. The passage work was repeated at least 5 times.
- adherent cells were isolated and cultured, and cell surface antigens were analyzed by flow cytometry, and confirmed to be Lin negative, CD45 negative, CD44 positive, Sca-1 positive, and c_kit negative. It was confirmed that these cells were able to differentiate into bone cells and adipocytes and had the properties of bone marrow mesenchymal stem cells.
- Boyden's chamber 1 In order to confirm that bone marrow mesenchymal stem cell inducing activity exists in the obtained skin extract, Boyden's chamber 1 was used, and the C57BL6 mouse already derived from the bone marrow The migration activity against leaf stem cells was examined. Specifically, put the skin extract (25 1) into the lower tank (volume 25 1) of Boyden's chamber, place a polycarbonate membrane with 8 ⁇ m fine holes, and touch Boyden Place the upper chamber of the chamber (capacity 5 0 1) and put bone marrow-derived mesenchymal stem cell suspension (5xl0 4 / 50ml culture solution: DM EM / 10% urine fetal serum) in the C02 incubator The cells were cultured at 37 ° C for 4-24 hours.
- the upper tank of the chamber 1 was removed, the silicon thin film was taken out, and the number of bone marrow-derived mesenchymal stem cells that had migrated to the lower tank of the chamber through the fine holes was quantitatively examined by staining.
- heparinity column chromatography and anion exchange column (Q column) chromatography were performed.
- the skin extract was diluted 10-fold with 9 volumes of 20 mM phosphate buffer pH 7.5 at 4 ° C (Dilution A).
- 20 mM phosphate buffer pH 7.5 (30 ml) was poured into HiTrap Hepalin HP column (column volume: 5 ml, GE Healthcare) to equilibrate the force ram. Further, Diluent A was bound to the column. The column was then washed with 20 mM phosphate buffer pH 7.5, lOOmM NaCl (30 ml).
- HC1 H 8.0 Diluted with HC1 H 8.0 (Diluent B). Pre-load 50 mM Tris HC1 H 8.0 (30 ml) with HiT The column was equilibrated by flowing into a rap mono Q column (column volume: lml, GE Healthcare). Further, Diluent B was bound to the column. To elute the adsorbed protein, Tris HC 1 H 8.0, lOOOOmM NaCl was flowed into the column, and the eluate was fractionated into tubes. All of the above purification steps are preferably performed at 4 ° C, more preferably at a force of 4-8 ° C, which can be performed at 4-16 ° C. This eluate was evaluated by the migration activity evaluation method using the Boyden chamber described in 2).
- the obtained bone marrow-derived mesenchymal stem cell purified sample is mixed in Matrigel to a volume of about 10%, and inserted into a silicon tube with a diameter of about 1 mm and a length of 5 mm, which is then transplanted into a GFP bone marrow.
- the mice were implanted subcutaneously on the back of the mouse. Two weeks later, the inserted tube was taken out, and the GFP fluorescence emitted from the bone marrow-derived cells migrated into the tube was quantitatively analyzed by a fluorescence measuring device.
- migratory cells were removed from the tube, seeded in DMEM / 10% urine fetal serum medium, and cultured in a C02 incubator to examine the in vivo mobilization activity of bone marrow-derived mesenchymal stem cells.
- Cells cultured continuously for 2 weeks were fixed with 2% paraformaldehyde at 25 ° C for 10 minutes, washed 4 times for 5 minutes each time with paraformaldehyde and treated with 2% skim milk solution. 10% with 2% skim milk containing 0.5% tween20 Anti-mouse keratin 5 antibody diluted 1:00 was reacted at 4 ° C for 16 hours.
- the antibody was washed 4 times for 5 minutes each with PBS, and reacted with Alexa546-labeled anti-rabbit IgG antibody 1000-fold diluted with 2% skim milk at 25 ° C for 1 hour.
- the experimental process of 1) to 8) above is summarized in Fig. 4.
- HMGB1 has bone marrow-derived mesenchymal stem cell mobilization activity in vivo
- a silicon tube containing this purified preparation was inserted subcutaneously into the back of a GFP bone marrow transplanted mouse, and the tube was added after 2 weeks.
- the nature of the cells mobilized was examined (Fig. 9).
- the HMGB1 purified sample contained many GFP-positive bone marrow-derived cells in the tube (about 3 times the control control).
- Mobilized! / ( Figure 10).
- Figure 11 shows a strong magnified image using a fluorescent stereomicroscope.
- the GFP positive cells mobilized in the tube were taken out and cultured in DMEM / 10% urine fetal blood serum medium. As a result, the cells were in a round floating cell state immediately after the start of the culture (Fig. 12). Later, GFP-positive bone marrow-derived cells adhere to the culture dish and spinal fibroblasts It was confirmed that the cells proliferated as cells with cell-like morphology and circular epithelial cell-like morphology (Fig. 13). Furthermore, when these cells were cultured continuously for 2 weeks, cells showing hair follicle morphology were confirmed in GFP-positive bone marrow-derived cells. (Fig. 14A; bright field, weakly magnified, Fig. 14B; GFP fluorescence, weakly magnified, Fig.
- the present inventors are the first in the world that free skin pieces produce HMGB1, and the produced HMGB1 has the activity of mobilizing bone marrow-derived mesenchymal stem cells in large quantities in the skin pieces.
- the bone marrow-derived mesenchymal stem cells mobilized in the skin piece differentiate into mesenchymal cells such as fibroblasts, adipocytes, and smooth muscle cells in the skin tissue, and further form epidermal cell hair follicles. It was found that differentiation into cells induces functional regeneration of transplanted skin tissue.
- This mobilization of bone marrow-derived mesenchymal stem cells and the resulting functional tissue regeneration by HMGB 1 is not only a transplant skin regeneration, but also a mechanism for inducing functional tissue regeneration at the time of damage to many organs with ischemia 'necrosis' Functioning! /, The power of being S expected easily. If it is possible to mobilize bone marrow-derived mesenchymal stem cells locally during regeneration of damaged tissue by developing pharmaceuticals using HM GB1 preparations, necessary functions that do not cause malfunction due to fibrotic scar healing I am convinced that functional tissue regeneration-guided medical care will be possible.
- HMGB1 family in skin extract and examination of bone marrow mesenchymal stem cell-inducing activity
- Method The presence or absence of HMGB protein family contained in newborn mouse skin extract was confirmed using Western blot method.
- 10 skin extracts obtained in [Example 2] were electrophoresed using SDS-PAGE, and proteins separated in the gel were transferred to a PVDF membrane using a blotting apparatus (ATTO).
- the ECL Western Blotting Detection System (GE Healthcare) was reacted with the same P VDF film, the ECL film was exposed to light and developed to confirm the presence of HMGB1, HMGB2, and HMGB3 proteins. Detected.
- -Lys A plasmid vector pCAGGS for expressing a protein in mammalian cells was introduced so as to express the protein to which SEQ ID NO: 18) was added.
- HEK 293 cultured cell line derived from human embryonic kidney cells
- HMGB1, HMGB2, and HMGB3 proteins were incubated at 4 ° C for 16 hours, and then centrifuged at 4400 g for 5 minutes to collect the supernatant.
- 100 L of Anti Flag antibody Gel (Sigma) per 50 mL of the supernatant was mixed and incubated at 4 ° C for 16 hours. The gel was collected by centrifugation and washed 5 times with PBS. Further, elution was carried out using 3X Flag peptide (final lOO ⁇ g / ml).
- Recombinant protein expression was confirmed by Western blot using a mouse anti-Flag antibody diluted 1000-fold with S-T-PBS and a peroxidase-labeled anti-mouse IgG antibody (GE Healthcare) diluted 2000-fold with S-T-PBS.
- the migration activity of mouse purified bone marrow mesenchymal stem cells of these purified recombinant proteins was evaluated using Boyden's chamber 1 as in [Example 2].
- the skin of the back of 8 week-old C57BL / 6 mice was excised into a circular shape with a diameter of 8 m, and a skin ulcer model was prepared and purified there.
- Each (100 ng) was mixed with an equal volume of hyaluronic acid solution at a concentration of lg / 100 mL PBS, and 100 L was administered to the ulcer surface. To prevent the ulcer surface from drying, it was covered with an adhesive transparent wound covering and protective material Tegaderm (Threem Healthcare), and the wound area was measured over time to determine the healing effect.
- human bone marrow mesenchymal stem cells migrated with human skin extract and human purified HMGB1
- evaluation was performed using a boyden chamber as in [Example 2].
- Human skin with an area of lcm 2 was soaked in lml PBS, incubated for 16 hours at 4 ° C, and then centrifuged at 440G for 10 minutes at 4 ° C. Only the supernatant was collected and used as a human skin extract.
- human bone marrow mesenchymal stem cells (Cbrex) were used as the cells to be placed in the upper part of the void chamber.
- HMGB2 and HMGB3 bands were detected in addition to the HMGB1 band. Therefore, it was confirmed that the new mouse skin extract contained HMGB2 and HMGB3, which are family proteins, in addition to HMGB1! HMGB1 'HMGB2' HMGB3 expression vectors were constructed by adding a Flag tag to the N-terminus of each protein (Fig. 16). An expression vector was introduced into HEK293 cells, and the expressed protein was purified using a flag tag, and then the protein was confirmed using Western blotting (FIG. 17). When the migration activity of mouse bone marrow mesenchymal stem cells using these purified proteins was measured, the activity of any protein was confirmed (Fig. 18).
- HMGB2 and HMGB3 are known as proteins having high homology with HMGB1.
- HMGB2 and HMGB3 a family of HMGB1, were also produced from the free skin extract. Furthermore, a recombinant protein of HMGB1 'HMGB2' HMGB3 was prepared, bone marrow mesenchymal stem cell migration activity in vitro was confirmed, and the therapeutic effect of skin ulcer in vivo was also confirmed.
- HMGB family 1 (HMGB 1 ⁇ HMGB2 ⁇ HMGB3) and recombinant HMGB family in newborn mouse free skin fragments have bone marrow mesenchymal stem cell induction activity and bone marrow-derived activity It has the activity of locally inducing stem cells that can differentiate into the epithelial system, and these induced bone marrow-derived cell groups differentiate into various cells such as epidermal keratinocytes, hair follicles and fibroblasts in the damaged tissue. It has become clear that it has the effect of promoting the healing of damaged tissue.
- bone marrow mesenchymal stem cells are pluripotent stem cells
- the whole or local administration of the HMGB family can be used to treat other tissue damage conditions, such as brain damage, myocardial infarction, and fractures. We are convinced that therapeutic effects can be expected as well.
- human and mouse HMGB1 have 98% (213/215) homology in their amino acid sequences, and HMGB2 has 96% (202/210) homology in their amino acid sequences. It is known that HMGB3 has 97% (195/200) homology in the amino acid sequence constituting each. Therefore, human HMGB may have the same activity as mouse HMGB. From the results of this Example, human skin extract and HMGB1 are similar to mouse skin extract and bone marrow mesenchyme as HMGB1. It has become clear that it has the activity of inducing stem cells.
- HMGB1 ELISA kit (Sinotest). Furthermore, the brain, heart and skin tissue extracts were bound to a heterogeneity column in the same manner as in [Example 2], and the bone marrow mesenchymal stem cell inducing activity of the protein in the bound fraction was measured using a boyden chamber. Confirmed
- mice brain extract contained HMGB 1 equivalent to the newborn mouse skin extract. Furthermore, the inducing activity of bone marrow mesenchymal stem cells was observed in the mouse brain as well as the skin. A force that hardly contained HMGB1 in mouse intestinal extract and mouse heart extract Induction activity of mesenchymal stem cells was observed. In addition, the mouse brain and mouse heart-binding fractions had activity to induce bone marrow mesenchymal stem cells, similar to the mouse skin binding column. Table 1 shows the results of measuring the HMGB1 concentration and the inducing activity of bone marrow mesenchymal stem cells in each mouse tissue extract.
- a novel method for functionally and easily extracting a plurality of bone marrow mesenchymal stem cell inducers containing HMGB1 functionally and easily can be developed. Furthermore, we developed a method for binding to a helin column to purify bone marrow mesenchymal stem cell inducers from tissue extracts. In addition, these components having bone marrow mesenchymal stem cell-inducing activity can be purified from the brain and heart using a heparin column in the same manner as the skin.
- Example 5 Objective: To establish a method for extracting mesenchymal stem cell migration active substances from cultured cells.
- Human fetal kidney-derived cultured cell line HEK293 and human cervical cancer cell line HeLa were each cultured in D-MEM (manufactured by nacalai) containing 10% fetal calf serum. Wash each cell with PBS Kiyoshigo, soaked for 16 hours in PBS (Nacalai Inc.) in 5ml of 10 7 cells of 4 ° C. The supernatant was collected by centrifuging at 4 ° C for 5 minutes at a gravitational acceleration of 440 G. Human bone marrow mesenchymal stem cells were placed in the upper layer of the void chamber, and a cell extract diluted 5-fold with DMEM was placed in the lower layer to confirm the migration activity of human bone marrow mesenchymal stem cells.
- mice were irradiated with a single 10Gy X-ray! / And myelosuppressed mice were created.
- Bone marrow cells were collected from the bilateral femur and lower leg bone of GFP mice. This was administered from the tail vein of myelosuppressed mice 24 hours after irradiation. Administration was performed under inhalation anesthesia with isoflurane.
- mice transplanted with bone marrow cells from GFP mice were anesthetized with isoflurane and injected intraperitoneally with pentobarbital (45 mg / kg).
- the mouse was fixed to a stereotaxic apparatus, and a midline incision was made in the head with a scalpel.
- a burr head was drilled 2.5mm from the right side and 1mm from the front using a drill (Fig. 23A).
- Fig. 23A With the tip at a position 3 mm deep from this site, an outer cylinder of a 20G Surfflow needle was inserted and fixed.
- negative pressure was applied using a syringe, and a portion of the brain tissue was aspirated (FIG. 23B).
- mice in the control group and the treatment group were perfused and fixed with 4% paraformaldehyde, and then the brains were excised. In addition, 4% paraformaldehyde was externally fixed. After dehydration with sucrose with a gradient of 15% and 30%, frozen sections were prepared.
- Results Qualitatively shows GFP positive cell accumulation 2 and 6 weeks after administration. 2 weeks later (control; Fig. 23D, purified fraction of palin column in skin extract; Fig. 23E) and 6 weeks later (Control; Figure 23F: Purin column purified fraction in skin extract; Figure 23G) GFP-positive cells tended to be more concentrated at the damaged site in the treatment group than in the control group. Discussion: By administering the purified fraction of the palin column to the skin extract, bone marrow-derived cells accumulated at the brain tissue defect site, indicating neuronal morphology.
- Bone marrow-derived mesenchymal stem cells are known to be differentiated into nerve cells, and it was clarified from this result that regeneration of the nervous system cells at the brain injury site can be induced by the purified fraction of the palin column in the skin extract. This can also be applied to nerve regeneration at the site of cerebral tissue injury in cerebral ischemic disease or cerebral contusion.
- a bone marrow-derived cell for example, bone marrow-derived mesenchymal stem cell; the same shall apply hereinafter
- cell extract having an inducing activity
- a heparin-binding fraction having a bone marrow-derived cell inducing activity
- a bone marrow-derived cell inducing activity An anion exchanger binding fraction having been provided.
- a cell extract, a heparin-binding fraction, an anion exchanger-binding fraction, a bone marrow-derived cell inducer and tissue regeneration promoter containing HMGB1, HMGB2, or HMGB3 were provided.
- HMGB1, HMGB2, and HMGB3 fall into hypoxia due to a decrease in blood flow, are released from tissue cells in the direction of necrosis, and have an action of mobilizing bone marrow-derived cells or various cells derived from them locally.
- the mobilized bone marrow-derived cells are differentiated into the cell lineages required by each tissue, thereby promoting the recovery of the function lost due to anaemia and necrosis, so-called functional tissue regeneration.
- a cell extract, heparin-binding fraction, anion-exchanger-binding fraction, HMGB1, HMGB2, or HMGB3 to an intractable skin ulcer caused by a blood flow disorder in the skin.
- a cell extract, heparin-binding fraction, anion-exchanger-binding fraction, HMGB1, HMGB2, or HMGB3 to an intractable skin ulcer caused by a blood flow disorder in the skin.
- bone marrow-derived cells are mobilized and the mobilized cells differentiate into vascular endothelial cells, local blood flow is improved.
- differentiation into fibroblasts, nerve cells, hair follicle cells, and even epidermis cells induces and promotes functional skin regeneration with the necessary skin-attached organs for fibrotic scar healing.
- HMGB1, HMGB2, and HMGB3 can be expected to be effective as well.
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DK07830867.3T DK2055308T3 (en) | 2006-10-30 | 2007-10-30 | PHARMACEUTICALS FOR PROMOTING FUNCTIONAL REGENERATION OF DAMAGED TISSUE |
US12/161,982 US20090202500A1 (en) | 2006-10-30 | 2007-10-30 | Pharmaceuticals That Promote Functional Regeneration of Damaged Tissues |
JP2008542139A JP5308161B2 (ja) | 2006-10-30 | 2007-10-30 | 損傷組織の機能的再生促進医薬 |
CA002636788A CA2636788A1 (en) | 2006-10-30 | 2007-10-30 | Hmgb protein for use in promoting tissue regeneration |
AU2007315073A AU2007315073A1 (en) | 2006-10-30 | 2007-10-30 | Pharmaceuticals that promote functional regeneration of damaged tissues |
ES07830867.3T ES2629086T3 (es) | 2006-10-30 | 2007-10-30 | Sustancia farmacéutica para promover la regeneración funcional de tejido dañado |
EP07830867.3A EP2055308B1 (en) | 2006-10-30 | 2007-10-30 | Pharmaceutical for promoting functional regeneration of damaged tissue |
KR1020147023740A KR20140115373A (ko) | 2006-10-30 | 2007-10-30 | 손상 조직의 기능적 재생 촉진용 의약 |
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Also Published As
Publication number | Publication date |
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JP5308161B2 (ja) | 2013-10-09 |
PT2055308T (pt) | 2017-07-05 |
AU2007315073A1 (en) | 2008-05-08 |
HUE035043T2 (en) | 2018-05-02 |
ES2629086T3 (es) | 2017-08-07 |
JP2013227330A (ja) | 2013-11-07 |
CN101374538A (zh) | 2009-02-25 |
US20090202500A1 (en) | 2009-08-13 |
PL2055308T3 (pl) | 2017-11-30 |
US20240050460A1 (en) | 2024-02-15 |
CA2636788A1 (en) | 2008-05-08 |
EP2055308A1 (en) | 2009-05-06 |
EP2055308A4 (en) | 2010-10-27 |
DK2055308T3 (en) | 2017-07-17 |
KR20140115373A (ko) | 2014-09-30 |
JPWO2008053892A1 (ja) | 2010-02-25 |
EP2055308B1 (en) | 2017-05-10 |
KR20090078304A (ko) | 2009-07-17 |
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