WO2004018615A1 - フィブリン含有組成物 - Google Patents
フィブリン含有組成物 Download PDFInfo
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- WO2004018615A1 WO2004018615A1 PCT/JP2003/010692 JP0310692W WO2004018615A1 WO 2004018615 A1 WO2004018615 A1 WO 2004018615A1 JP 0310692 W JP0310692 W JP 0310692W WO 2004018615 A1 WO2004018615 A1 WO 2004018615A1
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- plasma
- fibrinogen
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- 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
- A61L27/3895—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 using specific culture conditions, e.g. stimulating differentiation of stem cells, pulsatile flow conditions
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- 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
- A61L27/14—Macromolecular materials
- A61L27/22—Polypeptides or derivatives thereof, e.g. degradation products
- A61L27/225—Fibrin; Fibrinogen
-
- 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
- A61L27/3616—Blood, e.g. platelet-rich plasma
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- 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
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- 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
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/08—Materials for coatings
- A61L31/10—Macromolecular materials
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
- A61P1/16—Drugs for disorders of the alimentary tract or the digestive system for liver or gallbladder disorders, e.g. hepatoprotective agents, cholagogues, litholytics
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- A—HUMAN NECESSITIES
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- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
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- A61P13/12—Drugs for disorders of the urinary system of the kidneys
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- A61P17/00—Drugs for dermatological disorders
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- A—HUMAN NECESSITIES
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- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P19/00—Drugs for skeletal disorders
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- A—HUMAN NECESSITIES
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- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P27/00—Drugs for disorders of the senses
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- A—HUMAN NECESSITIES
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- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P3/00—Drugs for disorders of the metabolism
- A61P3/08—Drugs for disorders of the metabolism for glucose homeostasis
- A61P3/10—Drugs for disorders of the metabolism for glucose homeostasis for hyperglycaemia, e.g. antidiabetics
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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
- A61P7/00—Drugs for disorders of the blood or the extracellular fluid
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- A—HUMAN NECESSITIES
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- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P9/00—Drugs for disorders of the cardiovascular system
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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
- C07K14/745—Blood coagulation or fibrinolysis factors
- C07K14/75—Fibrinogen
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/08—Bioreactors or fermenters specially adapted for specific uses for producing artificial tissue or for ex-vivo cultivation of tissue
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M25/00—Means for supporting, enclosing or fixing the microorganisms, e.g. immunocoatings
- C12M25/14—Scaffolds; Matrices
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
- C12M29/16—Hollow fibers
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- 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
- C12N5/0068—General culture methods using substrates
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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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- 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
- C12N2533/00—Supports or coatings for cell culture, characterised by material
- C12N2533/50—Proteins
- C12N2533/56—Fibrin; Thrombin
Definitions
- the present invention relates to a biological scaffold for tissue regeneration, a method for producing the same, and a production system.
- regenerative medicine has received great promise as an alternative to conventional methods of organ transplantation and treatment using artificial organs.
- Research on regenerative medicine includes research on cell and tissue regeneration by replenishing stem cells, such as bone marrow transplantation, wound healing, and repair of skin and organ damage during surgery, and tissue engineering in a narrow sense. It has evolved in two directions: a series of studies captured by concepts.
- tissue engineering is a study that seeks to repair cells using both scaffolds and cells necessary for cells to survive in vivo.
- Regenerative medicine requires "cells”, “scaffolds for cell growth and distribution", and "cell growth factors”.
- scaffolding materials have been required to have biocompatibility so as not to harm the living body, and biodegradability so that the material is decomposed and Z-absorbed together with the formation of new living tissue. It is desired.
- Fibrin glue is an external adhesive used for tissue adhesion, closure and subsequent wound treatment utilizing the physiological blood coagulation action, and is currently widely used in various surgical procedures. There are also many known techniques for using fibrin glue as a biological scaffold in the field of regenerative medicine (Cell Transplantation, 7, 309-317 s 1998; and Burn, 24, 621-630, 1998).
- fibrin glue uses cryoprecipitate (cryo) prepared from autologous plasma in order to avoid side effects such as immune reactions such as allergic reaction and shock.
- cryoprecipitate prepared from autologous plasma
- self-fibrin glue prepared from autologous plasma is used not only for tissue regeneration but also for adhesion and closure of self-tissue using the blood coagulation action. It can be used for hemostatic applications.
- the following methods have been known as methods for producing autologous fibrin glue.
- the method of Casali et al. Is that it takes about 30 hours to prepare buibulin glue from whole blood after freezing for a long time, slowly thawing, and centrifuging.
- ethanol precipitation method As another method, there is an ethanol precipitation method by Kjaergard (Surg Gynecol 0bstet, 175 (1), July, 1992: hereinafter, this method is referred to as "ethanol method" in the present specification). In this method, plasma obtained from whole blood is added to ethanol on ice water to precipitate fibrinogen.
- fibrin glue using fibrinogen obtained by the above-mentioned cryo method or ethanol method can be used as a biological scaffold for regenerative medicine and the like.
- a technique for producing artificial skin by embedding fibroblasts in fibrin gel prepared with fibrinogen obtained by the ethanol method and seeding epithelial cells thereon Japanese Patent Laid-Open No. No.
- a fibrin gel prepared with fibrinogen obtained by the ethanol method was used to prepare a biological scaffold, and then a keratinocyte culture was prepared and used for transplantation Technology to make epidermal cell layer, fiber A technique for forming a dermal cell layer for transplantation using fibroblasts and keratinocytes (Japanese Patent No. 3134709) is known.
- fibrin culture was performed using fibrinogen obtained by the Clio method and the ethanol method, and cell proliferation and metabolic capacity of chondrocytes were compared.As a result, the Clio method maintained chondrocyte morphology and maintained cell proliferation. It has been reported that proteoglycin accumulation is more favored (American Journal of Veterinary Research, 59, 514-520, 1998).
- an ultrafiltration unit having an outlet adapted to be connected to a vacuum source, and first and second openings for concentrating the blood fraction;
- a first valve connecting a first opening of the ultrafiltration unit to a fluid delivery system for delivery to the filtration unit; and a second opening of the ultrafiltration unit to a purge fluid delivery system.
- a second valve to be connected, and a device including:
- An object of the present invention is to provide a high-performance scaffold suitable for cell proliferation and differentiation in regenerative medicine. Furthermore, it is possible to provide a method for producing a fibrin concentrate which is quick and simple, and which is safe and stable without risk of infection.
- fibrinogen concentrate obtained by a method of short-time cooling and rapid thawing improves the separation of plasma having a specific power cut-off value
- fibrinogen concentrate obtained by using a membrane is an excellent scaffold for regenerative medicine.
- a fibrinogen concentration system incorporating a plasma separation membrane, which is a hollow fiber membrane was devised, and the present invention was completed.
- a fibrin-containing biological scaffold comprising:
- the fibrinogen concentrate according to (1) wherein the fibrinogen concentrate is obtained by a method comprising a step of cooling the plasma for a short time, a rapid thawing step, and a step of collecting the fibrinogen concentrate.
- the fibrinogen concentrate is obtained by precipitation from plasma so that the fibrinogen recovery is in the range of 15% to 32% (1) or
- the fibrin-containing biological scaffold according to (2) The fibrin-containing biological scaffold according to (2).
- the fibrinogen concentrate obtained by a method comprising a step of cooling the plasma for 10 to 60 minutes, a step of thawing for 15 to 60 minutes, and a step of collecting the fibrinogen concentrate.
- the fipurin-containing biological scaffold according to any one of (1) to (3).
- the cooling step is performed at -20 ° C to -40 ° C, and the thawing step is performed at -10 ° C to + 15 ° C.
- the material of the hollow fiber membrane is a group consisting of hydrophilic polysulfone, EVAL (ethylene-vinyl alcohol copolymer), PAN (polyacrylonitrile), CDA (cellulose diacetate), and CTA (cellulose triacetate).
- EVAL ethylene-vinyl alcohol copolymer
- PAN polyacrylonitrile
- CDA cellulose diacetate
- CTA cellulose triacetate
- the fibrinogen concentrate allows human plasma to flow through the hollow portion of the hollow fiber in the plasma component fractionation apparatus, and the liquid mainly flows from the inner wall of the hollow fiber to the outer wall.
- the fibrin-containing biological scaffold according to any one of (6) to (11), which is obtained from the end of the hollow fiber by permeating the components.
- the fibrinogen concentrate makes human plasma come into contact with the outer wall of the hollow fiber in the plasma component fractionating apparatus, and at this time, the liquid component is mainly transmitted from the outer wall of the hollow fiber to the inner wall, whereby the hollow fiber is removed.
- the fibrin-containing biological scaffold according to any one of (6) to (14), which is obtained by concentrating the plasma that is brought into contact with the outside of the fibrin.
- the fibrinogen activator is thrombin (1) to (1).
- the fibrin-containing biological scaffold according to any one of the above 9).
- the cell is selected from the group consisting of vascular endothelial cells, fibroblasts, keratinocytes, mesenchymal stem cells, bone cells, osteoblasts, osteoclasts, liver cells, knee cells and hematopoietic stem cells.
- the substance released from the platelets includes the following steps:
- the platelet activating substance is at least one substance selected from the group consisting of ATP, ADP, collagen, and thrombin.
- the cell proliferation / differentiation stimulating substance is a mixture of a substance released from platelets and a substance released from leukocytes.
- Cells can be obtained by passing human-derived cells through a filter (2 ⁇ )
- a method for promoting fibrous tissue regeneration wherein the cell culture or the regenerated tissue according to (37) is applied to a damaged tissue or used as a graft.
- a method for promoting tissue regeneration comprising a step of adding a mixture of cells and the biological scaffold according to any one of (1) to (23) to a damaged tissue.
- (40) at least one selected from the group consisting of vascular endothelial cells, fibroblasts, keratinocytes, mesenchymal stem cells, bone cells, osteoblasts, osteoclasts, liver cells, ⁇ cells, and hematopoietic stem cells
- a concentration system for obtaining a fibrin-containing biological scaffold comprising:
- the material for the hollow fiber membrane is selected from the group consisting of hydrophilic polysulfone, EVAL (ethylene-vinyl alcohol copolymer), PAN (polyacrylonitrile), CDA (cellulose diacetate), and CTA (cellulose triacetate).
- EVAL ethylene-vinyl alcohol copolymer
- PAN polyacrylonitrile
- CDA cellulose diacetate
- CTA cellulose triacetate
- the hollow fiber membrane material is made of hydrophilic polysulfone or EVAL (ethylene (45) The system according to (45).
- the liquid supply device wherein the introduction means introduces human plasma from one of the distribution ports provided in the fractionating device to the inner surface or outer membrane surface of the hollow fiber membrane, and draws out the human plasma from another distribution port.
- the concentration system according to any one of (41) to (46), which is a suction device.
- the plasma component fractionating apparatus wherein the crude purification means comprises potting both ends of a hollow fiber membrane contained in a container such that the hollow interior flows outside the container. (41) to (48) ) The enrichment system according to any one of the above.
- a plasma component fractionating apparatus wherein the rough purification means comprises potting one end of a hollow fiber membrane contained in a container so that the hollow interior flows outside the container, and sealing the other end. 41) The concentrating system according to any one of (48) to (48).
- the ratio BinZBout between the amount Bin of the patient plasma per unit time flowing into the hollow part and the amount Bout of the fibrinogen concentrated solution collected per unit time from the end of the hollow fiber is in the range of 2 to 20.
- the human plasma is brought into contact with the outer wall of the hollow fiber in the plasma component fractionating apparatus, and at this time, the liquid component is mainly transmitted from the outer wall of the hollow fiber to the inner wall, and is brought into contact with the outside of the hollow fiber.
- the plasma is brought into contact with the outer wall of the hollow fiber, (54) The operation method of the concentration system according to (54), wherein when the liquid component is mainly permeated, the pressure in the hollow portion of the hollow fiber is reduced, and the component is permeated into the hollow portion from outside the hollow fiber by suction.
- a system for producing a fipurin-containing biological scaffold comprising:
- a system for producing a fibrin-containing biological scaffold comprising:
- the means for producing a fibrin glue includes a means for mixing a fibrinogen concentrate with a fibrin stabilizing factor and a fibrinogen activating factor (59) to (68). System.
- a method for producing a fibrin-containing biological scaffold comprising:
- fractionating human plasma with a plasma component fractionation membrane having a cut-off value of not less than 150,000 daltons and not more than 400,000 daltons, and separating it into fibrinogen concentrate and the remaining fractionated plasma;
- a method for producing a fibrin-containing biological scaffold comprising:
- the method includes a step of mixing the remaining fractionated plasma obtained by fractionating with the plasma component fractionation membrane with the plasma separated blood from which the plasma has been separated by the plasma separating means and returning the mixed blood to the human body (70). ) To (74).
- the step of producing fibrin glue includes a step of mixing a high molecular weight fractionated plasma rich in fibrinogen with a fibrin stabilizing factor and a fibrinogen activating factor (70) to (76) ).
- a method for producing a high-performance scaffold suitable for cell proliferation and differentiation in regenerative medicine and a method for producing a fast and simple, safe and stable fibrin concentrate without risk of infection And a manufacturing system can be constructed.
- FIG. 1 is a diagram showing a fiprinogen enrichment system using the Endstop method.
- FIG. 2 is a diagram showing a fiprinogen enrichment system by the Discard method.
- FIG. 3 is a diagram showing a fibrinogen enrichment system by the Aspirate method.
- FIG. 4 is a diagram showing a fibrinogen enrichment system by the Aspirate method incorporated in a blood bag.
- FIG. 5 is a diagram showing a fibrinogen concentration system (multistage suction) by the Aspirate method incorporated in a blood bag.
- 1 is the source plasma
- 2 is mainly the liquid component
- 3 is the concentrate
- 4 is the hollow fiber membrane
- 5 is the inlet of the source plasma
- 6 is the concentrate outlet
- 7 is the valve
- 8 is the end sealed.
- a closed or looped hollow fiber membrane at the end, and 9 also indicates a hollow fiber membrane with a sealed end or a looped end.
- FIG. 6 shows an example of a blood processing apparatus incorporating the biological scaffold production system of the present invention.
- FIG. 7 shows an example of a plasma separation column and a plasma component fractionation column used in the present invention.
- FIG. 8 shows an example of an activated thrombin plasma preparation device used in the present invention.
- 11 is a whole blood reservoir with CPD
- 12 is a plasma reservoir
- 13 is a filtered plasma reservoir
- 14 is a concentrated plasma reservoir
- 15 is a plasma separation column
- 16 is plasma Component fractionation column
- 17-20 is pump for blood circuit
- 21 is blood or plasma inlet
- 2 2 is the plasma depleted polycytic fraction or concentrated plasma outlet
- 2 3 is the plasma or filtered plasma outlet
- 2 4 is a hollow fiber membrane
- 3 1 is a filtered plasma inlet
- 3 2 is a plasma storage bag made of chloride chloride
- Bio scaffold is defined as the material that constitutes the support structure (scaffold) for cells to settle, proliferate, and differentiate in the tissue regeneration field and reconstruct the tissue.
- the role of biological scaffolds is to secure space for regeneration, supply oxygen and nutrients to cells, and store cell growth factors, in addition to promoting cell colonization, proliferation, and differentiation.
- Can be Examples of biological scaffolds in actual biological tissues include biopolymers called extracellular matrices such as collagen and Ramiyun.
- biopolymers called extracellular matrices such as collagen and Ramiyun.
- fibrin has biological scaffolding activity (Cell Transplantation, 7, 309-317, 1998; and Burn, 24, 62, 630, 1998, etc.). .
- the fibrin-containing biological scaffold of the present invention contains a mixture of a fibrinogen concentrate and a fibrinogen activator obtained from human plasma by a short-time, crude purification process.
- the above-mentioned fibrinogen concentrate is obtained by a method comprising, as one form, a step of rapidly cooling plasma, a step of rapidly thawing, and a step of collecting fibrinogen concentrate (for example, a centrifugation step). It is a thing.
- the above fibrinogen concentrate comprises a cooling step of plasma for 10 minutes to 60 minutes, a thawing step of 15 minutes to 60 minutes, and a step of collecting the fibrinogen concentrate.
- the cooling step is performed at a temperature of from 120 ° C. to ⁇ 40 ° C.
- the thawing step is performed at a temperature of from 110 ° C. to 115 ° C.
- human plasma is used for humans in terms of biocompatibility. When used for animals, it is preferable to use the plasma of the animals.
- a more specific embodiment of the method for obtaining the above fiprinogen concentrate is as follows.
- plasma obtained by centrifugation (4 ° C) of whole blood is frozen by standing at a temperature as low as _30 ° C for 30 minutes, then left at _2.5 ° C for 30 minutes. And leave at 12 ° C for 30 minutes. Subsequently, the mixture is allowed to stand at 4 ° C for 30 minutes, and finally centrifuged (l, 000g x 15 minutes, 1 ° C) to remove the supernatant, thereby obtaining a fibrinogen concentrate.
- plasma obtained by centrifuging whole blood (1,000 g x 15 minutes, 4 ° C) is frozen at a low temperature of about 30 ° C for 60 minutes, and then frozen. Leave at 5 ° C for 30 minutes, then leave at 4 ° C for 30 minutes. Finally, the supernatant can be removed by centrifugation (1,000 g x 15 minutes, 1 ° C) to obtain a fipurinogen concentrate.
- the present invention is not limited to the centrifugation operation, since it is also possible to obtain a fibrinogen concentrate by decantation, filtration, etc., in addition to the centrifugation operation.
- fiprinogen concentrate is obtained from plasma in a short time of 1 to 2 hours (see Japanese Patent Application Laid-Open No. 2001-511703). Good Clio method.
- the fibrin-containing biological scaffold of the present invention obtained as described above has a fibrinogen recovery rate of 15 ° /. ⁇ 32 ° /.
- fibrinogen concentrate obtained by precipitation from plasma so as to be in the range of
- the activity as a biological scaffold is high if the recovery is adjusted to be in the range of 15 to 32% as described in the Examples.
- the present inventors have found.
- the “fibrinogen recovery rate” refers to a value that can be obtained by the following formula.
- Fibrinogen recovery rate (amount of fipurinogen contained in fibrinogen concentrate / amount of fipurinogen contained in plasma which is a starting material used for preparing fibrinogen concentrate) ⁇ 100.
- Quantification of fibrinogen is performed by adding thrombin and Ca2 + to a sample, and then measuring the generation time of a fibrin lot by the thrombin time method, weighing the generated clot, and immunoassay using an anti-fibrinogen antibody. However, from the viewpoint of simplicity of the operation, it is preferable to perform the thrombin time method.
- a fibrinogen concentrate can be suitably obtained in a short time of 1 to 2 hours even by a concentration operation using a plasma component fractionation apparatus having a built-in hollow fiber membrane.
- the hollow fiber used for the concentration preferably has a cut-off value that does not allow fibrinogen to permeate but mainly permeates liquid components.
- the cut-off value is defined as the molecular weight of a 90% reject solute (usually using polyethylene glycol).
- the liquid component mainly refers to a liquid component in which a substance smaller in size than fibrinogen coexists.
- albumin may or may not pass depending on the purpose and conditions.
- the preferred cut-off size is 30,000 to 1,500,000 daltons, more preferably 50,000 to 900,000 daltons, and within this range ⁇ 350,000 dalton fibrinogen.
- the concentration can be effectively concentrated and the throughput can be secured by appropriate operating conditions.
- a hollow fiber membrane having a more suitable cutoff size can be selected according to the purpose.
- a molecular weight cutoff of 80,000 to 300,000 is selected, it is possible to simultaneously concentrate growth factors and the like having a relatively small molecular weight, and it is suitably selected according to the purpose.
- the concentration of relatively low molecular weight components such as growth factors is not high.Comparatively high-molecular matrix proteins are concentrated at the same time as fibrinogen.
- the pressure rise during the concentration operation can be kept sufficiently low, which is particularly effective in reducing the concentration operation time.
- the use of membranes with a molecular weight cut-off greater than 350,000 daltons can result in some fibrinogen leakage. Even in this case, if the molecular weight cut off is 1,500,000 daltons or less, a certain enrichment can be obtained, Depending on the conditions, when the concentration is relatively low, for example, even if the concentration is 3 to 5 times, sufficient cell growth ability can be obtained.
- the concentration of fibrinogen in hollow fibers tends to be concentrated together with fiprinogen, which is useful as a biological scaffold. Even when fibrinogen is highly recovered, its activity as a biological scaffold is often high.
- the recovery rate of fibrinogen by the hollow fiber method is about 20% when the recovery rate is low, but it can be as high as 100% when the recovery rate is high.
- the hollow fiber material can be appropriately selected depending on the purpose and conditions.
- Polyolefin resins such as polyethylene, ethylene / butyl alcohol copolymer, polypropylene, poly-4-methylinole-2-pentene, fluorine resins such as polyvinylidene fluoride resin, ethylene / tetrafluoroethylene resin, and polychlorinated trifluoroethylene resin ,
- examples include inorganic materials such as glass, alumina, and titanium, and metals such as stainless steel, titanium, and aluminum.
- the surface inside the pores of the hollow fiber can be appropriately modified.
- a hollow fiber having a hydrophilic material surface can often effectively avoid clogging, and is suitably selected.
- the basic method of surface modification is to construct a hydrophilic surface.
- Known methods can be adopted according to the purpose. For example, it is possible to make the surface hydrophilic by treating it with hot water after irradiation with ionizing radiation. Surface modification is also possible by coating an amphiphilic polymer.
- hydroxyacrylyl or methacrylic polymers such as hydroxyethyl acrylate, hydroxyshethyl methacrylate, hydroxypropyl acrylate, or hydroxypropyl methacrylate, or amine-sized polymers or polyethylene glycol-based polymers Or hydrophilization by a copolymer or the like thereof.
- hydroxy Shetyl methacrylate and dimethylaminoethyl methacrylate copolymer have a proven track record as a coating agent for blood treatment and are preferably used (Japanese Patent Application Laid-Open No. H10-2343641).
- the graft polymerization method is a method of bonding a chemically hydrophilic polymer to a filter carrier, and has an advantage that there is no fear of elution.
- the method described in Japanese Patent Application Laid-Open No. 2000-185094 is preferably employed.
- blood treatment materials for example, those which have been used as dialysis membranes and membranes for extracorporeal circulation are preferably used, and hydrophilized polysulfone, hydrophilized polyether sulfone, polyether sulfone 'polyarylate resin polymer alloy, polyallyl Ethersulfone, ethylene-vinyl alcohol copolymer, polyacrylonitrile, cellulose diacetate, cellulose triacetate, hydrophilized polypropylene, polyester coated with a hydrophilic polymer can be preferably used as a material.
- the system is a concentration system for obtaining a fibrin-containing biological scaffold, comprising:
- Figures 1 to 5 show an overview of this system.
- Fig. 1 and Fig. 2 show plasma component fractionation devices in which both ends of a hollow fiber membrane contained in a container are potted so that the hollow interior flows outside the container.
- the plasma component fractionation device shown in (1) is a device in which one end of a hollow fiber membrane built in a container is potted so that the hollow interior flows outside the container, and the other end is sealed.
- both ends of the hollow fiber membrane built in the container were bent so that the hollow inside could flow to the outside of the container, and the hollow fiber was bent into a U-shape.
- a plasma component fractionating apparatus can also be constructed in which both ends of the hollow fiber membrane are potted in the same direction. These systems use one of the distribution ports provided in the above-mentioned fractionating device to connect the inner surface of the hollow fiber membrane or the outer surface.
- the end of the hollow part is sealed, the plasma is processed, and the concentrated liquid in the hollow part of the hollow fiber is recovered by the recovered liquid (Fig. 1, Endstop method), open the end of the hollow part, and continuously collect the concentrated liquid from the end of the hollow fiber (Fig. 2, Discard method), or when the liquid component is mainly transmitted from the outside to the hollow part (Fig. 3, Aspirate method).
- the Endstop method has a small volume in the hollow space and therefore has little room to accumulate the target fibrinogen.Therefore, the pressure tends to increase due to clogging during plasma processing. Is preferably adopted.
- the ratio Bin / Bout of the amount Bin of the patient's plasma flowing into the hollow space per unit time of the hollow fiber and the amount Bout of the fibrinogen concentrated solution collected from the end of the hollow fiber per unit time is as follows: It is preferably from 2 to 20 and more preferably from 5 to 10. Within this range, a pressure increase can be avoided and conditions can be set under which a fiprinogen concentrate can be obtained effectively.
- the Aspirate method corresponds to the case where the liquid component mainly penetrates from the outside to the hollow part, and may be the case where plasma is transmitted from the outside by pressurization, or the case where the inside of the hollow part is depressurized and aspirated by suction. .
- suction no pressure is applied to the concentrate side, so that denaturation of the concentrate, which is the target substance, can be prevented. Therefore, it is possible to set a higher pressure than in the case of pressurization.
- the pressure difference due to suction cannot be set above atmospheric pressure in principle, an efficient concentration operation can be realized with a pressure difference close to atmospheric pressure, for example, a pressure difference of 0.5 MPa or more.
- the ratio of the amount Cinitial of the patient's plasma to be brought into contact with the outer wall of the hollow fiber to the amount Cend of the obtained fibrinogen concentrate, Cinitial / Cend, is preferably 2 to 20. And more preferably 5 to 10. Within this range, it is possible to set a condition under which a pressure increase can be avoided and a fibrinogen concentrate can be obtained effectively. Furthermore, a range of suitable conditions Aspirate method, the plasma quantities 5 X 10 one 5 ⁇ 5 X 10 one 4 m 3, contacted to the hollow fiber outer surface area 0. 00 l ⁇ lm 2, the difference by the suction The pressure is preferably 0.001 to 0.08 MPa.
- the amount of the plasma 1 X 10 one 4 ⁇ 4 X 10- 4 m 3 , the outer surface area of the hollow fiber contacting is from 0.01 to 0. 5 m 2, the differential pressure by the suction is from 0.01 to 0 08MPa.
- FIG. 3 shows a type in which the hollow fiber is introduced into a general module case
- FIG. 4 shows a type in which the hollow fiber is introduced into a blood bag.
- the plasma is introduced into the blood bag, and a fibrinogen concentrate can be immediately obtained from the plasma by an aspiration method.
- FIG. 5 shows a type in which a plurality of bundles of hollow fibers by the Aspirate method are introduced so that a suction operation can be performed in multiple stages. Install vertically as shown in the figure, and perform suction operation from above. If the pressure rises due to clogging, move on to the next stage of suction with the hollow fiber bundle. An appropriate pressure rise is from 0.05MPa to 0.07MPa.
- any of the Endstop method, Discard method and Aspirate method after obtaining a concentrated solution having a certain concentration, it is possible to concentrate by another operation. For example, this corresponds to a case where the concentration is further added by centrifugation, or a case where a precipitate is formed by freezing and thawing.
- concentration method By combining the concentration method with the hollow fiber and these concentration methods, it is possible to efficiently obtain a liquid having a high concentration ratio.
- the fipurin-containing biological scaffold of the present invention also comprises a fibrinogen activator.
- fibrinogen activator refers to a substance having an action of converting fibrinogen into fibrin, and specifically includes thrombin.
- thrombin those having the biological activity of thrombin, for example, those obtained by fractionating plasma proteins can be used.
- thrompoplastin is allowed to act in the presence of Ca 2+ on prothrombin purified from human or pest plasma, preferably from the same human plasma as that used for preparing the fibrinogen concentrate. Can be used. Alternatively, use commercially available pharmacopeia You may.
- the blending amount of thrombin in the scaffold may be 0, 01 to: L00 units, preferably 0, 1 to 10 units, per 1 mg of fibrinogen concentrate.
- the fipurin-containing biological scaffold of the present invention contains a substance derived from plasma that is involved in the formation and stabilization of fipurin.
- plasma-derived substances involved in the formation and stabilization of fibrin include Factor XIII, fibronectin and the like.
- the fibrin-containing biological scaffold of the present invention can be suitably used for culturing cells used in regenerative medicine such as skin, cartilage, bone, liver, kidney and cornea.
- Examples of cells include human-derived stem cells (particularly, bone marrow-derived mesenchymal stem cells), endothelial cells, epithelial cells, parenchymal cells (particularly, hepatic parenchymal cells), fibroblasts, keratinocytes, bone cells, and osteoblasts Cells, osteoclasts, hematopoietic stem cells, and the like.
- the method of cell culture is not particularly limited, but a method of adding a mixture of cells and a medium to a scaffold, leaving the mixture at a predetermined temperature and a predetermined temperature, or the like can be used.
- the medium is not particularly limited, and either a serum medium or a serum-free medium can be used.
- Serum media include MEM medium, BME medium, DME medium, ct MEM medium, IMEM medium, ES medium, DM-160 medium, Fisher medium, F12 medium, WE medium, RPMI medium, and the above.
- a medium obtained by adding serum to a basal medium such as a mixed medium of the medium, etc. may be mentioned.
- the atmosphere for cell culture is not particularly limited, and for example, an atmosphere such as a mixture of carbon dioxide and air can be used.
- the culture temperature of the cell culture is preferably from 10 to 50 ° C, particularly preferably from 30 to 40 ° C, in that the proliferation and differentiation of the cells can be actively performed.
- Methods for detaching and recovering the culture obtained according to the above method from the scaffold include methods for lowering the ambient temperature or the temperature of the scaffold, replacing the medium with a low-temperature medium, and chelating such as EDTA. Addition of chemicals, treatment with an enzyme such as trypsin or collagenase, and mechanical peeling with a cell scraper. It is.
- the above-described cell culture may be performed in the presence of a substance that stimulates cell growth and differentiation.
- a substance that stimulates cell growth and differentiation substances released from platelets obtained by the following method, substances released from leukocytes, and mixtures thereof are suitable.
- Cell growth factor binding Cell growth factor such as tissue growth factor and the like may be used.
- the substance released from the platelets include ATP, ADP, collagen, thrombin, and the like.
- the substances released from the platelets include the following steps:
- Examples of the first-stage filter used in this step (1) include a filter described in Japanese Patent Application Laid-Open No. 11-5088813 and the like.
- Examples of the second-stage filter used in the step (2) include a filter described in Japanese Patent Publication No. 2-135587 and the like.
- the platelet activating substance refers to ATP, ADP, epinephrine, collagen, thrombin, trypsin, latex particles and the like.
- the recovery solution containing the platelet activating substance refers to a solution obtained by dissolving the platelet activating substance in an appropriate buffer such as physiological saline or a phosphate buffer, an albumin solution, or a mixture thereof.
- the recovery solution containing plate-activating substance is to contact platelets with the above-mentioned platelet-activating substance. Can be obtained by
- the substances released from the leukocytes are as follows:
- the leukocyte activating substance is a substance contained in leukocytes themselves and having an activity of stimulating proliferation, differentiation, adhesion, migration and the like of leukocytes (for example, fMLP peptide, TNF, IL-1). , IL-16, etc.) or anti-T cell antibodies.
- the recovery solution containing the leukocyte activating substance can be obtained by contacting with a surfactant, an appropriate buffer, or a hypotonic solution, or by physically breaking leukocytes.
- a mixture of substances released from platelets and substances released from leukocytes comprises the following steps:
- Examples of the first-stage filter used in the step (1) include a filter described in Japanese Patent Publication No. 2-13587.
- a non-woven type filter (a flat laminated type or a cylindrical laminated type), a hollow membrane type, a porous membrane type filter and the like are suitable.
- Well-known separation filters such as a leukocyte removal filter and a platelet passage filter (WO 01/32236, etc.), a leukocyte and platelet removal filter (Japanese Patent Publication No. 02-13587, etc.) may be used.
- the substances released from platelets and leukocytes thus obtained can be used in regenerative medicine without using fibrin glue as a scaffold, and also as a stimulator of differentiation and proliferation.
- the scaffold of the present invention is excellent in adhesion to fibroblasts, chemotaxis, and cell growth promoting activity, as shown in Examples below. It also has excellent cell proliferation promoting activity on vascular endothelial cells. Furthermore, as shown in the Examples below, the substances released from activated platelets and activated leukocytes obtained by the method of the present invention have a cell growth promoting activity on fibroblasts and vascular endothelial cells. That is, by using the scaffold of the present invention for the treatment of skin damage such as diabetes, obstructive arterial disease (AS0) and other intractable ulcers, so-called wounds, fibroblasts and vascular endothelial cells can be obtained at wound sites. A healing promoting effect can be imparted to the healing process called the inflammatory reaction phase and the growth phase (granulation phase) where migration and proliferation are required. Therefore, the scaffold of the present invention is also effective for treating wounds.
- a healing promoting effect can be imparted to the healing process called the inflammatory reaction phase and the growth
- the present invention also provides a system for producing a fibrin-containing biological scaffold.
- the manufacturing system includes the following means:
- the system for producing a biological scaffold according to the present invention can be incorporated into, for example, a blood processing apparatus as shown in FIG.
- the blood processing device passes the blood collected from the living body through the first filtration column (15) for plasma separation, and separates the plasma separated by the first filtration column through the second filtration column (16). It is a system based on the double filtration method of returning to the living body.
- conventional blood processing equipment removes high molecular fractions such as LDL and VLDL using a second filtration column for fractionating plasma components, and reduces plasma viscosity to reduce arteriosclerosis. It was intended to prevent and treat vaso-occlusion and hyperlipidemia caused by liposome, and the polymer fraction separated by the filtration membrane was discarded.
- One aspect of the present invention is to obtain a fibrinogen-rich fraction suitable for a material of a fibrin-containing biological scaffold using a polymer fraction that has been conventionally discarded.
- a filtration membrane having a specific cut-off value is used for the second filtration column for fractionating plasma components.
- the hollow fiber membrane described in the fibrinogen concentration system may be used.
- blood is collected through an injection needle or a catheter connected to a blood vessel of a living body.
- any of conventionally known devices such as a membrane separation type and a centrifugal separation type can be used.
- a membrane-separated plasma separation device is a device in which a housing is filled with a hollow fiber-type separation membrane having a pore diameter that does not allow blood cells to pass at least. When blood flows inside the hollow fiber, the hollow fiber membrane wall is formed. Through which plasma components are separated.
- the material of the separation membrane is not particularly limited, and examples thereof include polysulfone, polyethersulfone, polyethylene, polypropylene, senorelose, senorelose acetate, ethylenevinylinolecone ole, polyatarilonitrile, Teflon, and polyester.
- Such a membrane-separated plasma separation device is particularly preferable in that plasma can be continuously separated from blood at a constant speed.
- a centrifugal separation type plasma separation device is a device that separates a certain amount of blood by introducing blood into a centrifugal bowl and rotating the bowl to separate blood cells from the specific gravity of blood cells and plasma. At that point, the blood in the bowl is returned to the patient, and new blood is introduced into the bowl and centrifuged.
- the thus obtained plasma containing a large amount of fibrinogen is obtained.
- the fraction can be directly used as a raw material for producing a fibrin-containing biological scaffold.
- the fibrin-containing biological scaffold is obtained by mixing a fibrinogen-rich plasma fraction obtained by the present invention with a fibrin stabilizing factor such as factor ⁇ and a fibrinogen activator such as thrombin monocalcium. Obtained by
- the remaining fraction obtained by separating the plasma fraction rich in fibrinogen by a filtration membrane is used to prepare multi-thrombin plasma by any method capable of further activating prothrombin to generate thrombin.
- a thrombin can be produced by adding an optimal concentration of calcium to the fraction and contacting the fraction with a negative surface charge such as silicon beads.
- the remaining fraction obtained by separating the plasma fraction rich in fibrinogen by the second filtration membrane is used as it is, or mixed with the blood cell-rich fraction obtained by separating the plasma obtained by the plasma separation device. , Can be returned to donors.
- the plasma fraction rich in fibrinogen separated by the second filtration membrane can be stored.
- Example 1 Preparation of fibrinogen concentrate by modified cryo method and preparation of biological scaffold containing fipurin
- the centrifuge tube containing the plasma was transferred into a cooling centrifuge (KUB0TA 3740) in which the temperature in the chamber was set to -2.5 ° C, and left for 30 minutes. Subsequently, the centrifuge tube was transferred to another cooling centrifuge in which the temperature of the first chamber was previously set to 12 ° C., and left for 30 minutes. Then, it was left still for 30 minutes in a refrigerator (SANYO Medicool MPR-510, 4 ° C). Finally, the mixture was centrifuged (1,000 g x 15 minutes, 1 ° C), and the supernatant was removed to obtain a fibrinogen concentrate.
- KUB0TA 3740 the temperature in the chamber was set to -2.5 ° C, and left for 30 minutes.
- the centrifuge tube was transferred to another cooling centrifuge in which the temperature of the first chamber was previously set to 12 ° C., and left for 30 minutes. Then, it was left still for 30 minutes in a refrigerator (SANYO Medicool MPR-510
- Fibrinogen was quantified using a commercially available fibrinogen measurement kit (Fisher Scientific Pacific Hemostasis kit) based on the thrombin time method, and the measurement procedure was in accordance with the manufacturer's instructions.
- the amount of recovered fipurinogen was 40.2 mg.
- the fibrin-containing biology was quickly mixed with a fibrin-containing biological concentrate containing 50 mM calcium chloride (Sigma C5080) and a human plasma thrombin solution (Sigma T8885) (5.0 NIH units / ml).
- a scaffold was prepared.
- the fibrinogen concentrate and a human plasma thrombin solution containing 50 mM calcium chloride (Sigma C5080) (Sigma T8885) (5.0 NIH units / ml) are quickly mixed in equal volumes, and the fibrin-containing biology is mixed.
- a scaffold was prepared. Comparative Example 1 (Preparation of fibrinogen concentrate by cryo method and preparation of biological scaffold containing fibrin)
- a fibrin-containing biological foot is rapidly mixed with an equal amount of a fibrinogen concentrate and a human plasma thrombin solution (Sigma T8885) (5.0 NIH units / ml) containing 50 mM calcium chloride (Sigma C5080). Field materials were made. Comparative Example 2 (Preparation of fibrinogen concentrate and fibrin-containing biological scaffold by ethanol precipitation method)
- the fibrinogen precipitate was collected by centrifugation at 600 g for 15 minutes to obtain a fibrinogen concentrate.
- the amount of recovered fibrinogen is 2.7 mg.
- the fibrinogen concentrate was dissolved at 37 ° C, and a human plasma thrombin solution (Sigma T8885) containing 0.3 volume of 80 mM calcium chloride (Sigma C5080) (5.0 NIH units / ml) was rapidly mixed to produce a fibrin-containing biological scaffold.
- Test Example 1 proliferation stimulating activity on normal human fetal lung-derived fibroblasts
- the bottom of the plate was washed with a phosphate buffered saline solution, and suspended in a MEM-E medium (Dainippon Pharmaceutical Co., Ltd., 12-102-504) containing 4 mM glutamine and 10% fetal bovine serum 2 was added X 10 4 cells in normal human fetal lung-derived fibroblasts HEL299 (HEL ATCC strain number CCL137), at 37 ° C, 5% C0 2 concentration of the carbon dioxide gas incubator (Tapaiesupe' click Ltd. BNA121D) The cells were cultured for 72 hours. After the culture, non-adherent cells were washed away with a phosphate buffered saline solution which had been heated to 37 ° C in advance.
- Fiprinogen recovery rate in the fibrinogen concentrates obtained in Examples 1 and 2 and Comparative Examples 1 and 2, and the normality of the fipurin-containing biological scaffold prepared using each fibrinogen concentration Proliferation sting on human fetal lung-derived fibroblasts The intense activity is summarized in Table 1 below.
- Example 1 The ability of the biological scaffold prepared in Example 1 to adhere to fibroblasts was measured. 0.5 ml of the fibrinogen concentrate prepared in Example 1 and 50 calcium chloride
- the fibrin-containing biological scaffold was washed with a phosphate buffered saline solution, and the fibrin-containing biological scaffold was placed on the bottom of a 24-well multiplate (Nippon Betta Ton Dickinson No. 353 047). Formed. A D-MEM medium (manufactured by Invitrogen) containing 4 mM glutamine and 2% fetal serum was added, and a migration ability measurement chamber equipped with a collagen-coated filter (Nippon Becton Dickinson 353431) was placed on the plate. Place, 2 X 10 4 cells in normal human dermal fibroblasts (Takarabai O Co.
- HDF- Neo were ⁇ Ka ⁇ , and incubated at 37 ° C, 5% C0 2 thermostat. Two hours later, the cells that migrated to the back of the membrane were observed under a microscope after Giemsa staining.
- the biological scaffold prepared in Example 1 showed strong migration ability.
- Test Example 4 proliferation stimulating activity on bone marrow mesenchymal stem cells
- Example 1 The proliferation activity of the biological scaffold prepared in Example 1 on bone marrow mesenchymal stem cells was examined. And Fuiburino one Gen concentrate 0. 5 ml prepared in Example 1, 50raM chloride calcium ⁇ beam (Sigma Co. C5080) human plasma thrombin solution containing (Sigma Co. ⁇ 8 8 ⁇ 5) (5. 0 NIH units / ml) was quickly mixed in an equal amount, added to a 24-well multiplate (No. 353047, manufactured by Betaton Dickinson Japan), and rapidly stirred to spread over the entire plate to produce a uniform scaffold on the bottom of the plate.
- Fuiburino one Gen concentrate 0. 5 ml prepared in Example 1, 50raM chloride calcium ⁇ beam (Sigma Co. C5080) human plasma thrombin solution containing (Sigma Co. ⁇ 8 8 ⁇ 5) (5. 0 NIH units / ml) was quickly mixed in an equal amount, added to a 24-well multiplate (No. 353047, manufactured by Betat
- the bottom of the plate was washed with a phosphate buffered saline solution and suspended in a D-MEM medium containing 4 mM glutamine and 2% fetal bovine serum.
- 2.5 ⁇ 10 4 normal human bone marrow-derived mesenchymal stem cells was added Takarabaio Co. PT034), it was incubated for 72 hours at 37 ° C, 5% C0 2 concentration of the carbon dioxide gas incubator.
- As a control the same number of bone marrow mesenchymal stem cells cultured on a plate without a scaffold was used. After the culturing, dead cells were washed away with a phosphate buffered saline solution which had been heated to 37 ° C in advance.
- Proliferation activity of the biological scaffold prepared in Example 1 on human primary hepatocytes was examined.
- 0.5 ml of the fibrinogen concentrate prepared in Example 1 and human plasma thrombin solution (T8885, manufactured by Sigma) (5.0 NIH units / ml) containing 50 salted calcium salts (C5080, manufactured by Sigma) was quickly mixed in an equal amount, added to a 24-well multiplate (No. 353047, manufactured by Nippon Becton Dickinson Co., Ltd.), and rapidly stirred to spread over the entire plate to produce a uniform scaffold on the bottom of the plate.
- the plate bottom were washed with phosphate-buffered saline, 4 mM glutamine, 2% ⁇ shea fetus serum containing suspended in D-MEM medium 2.
- 5xl0 4 of normal human hepatocytes (Takara Bio Inc. C2591 ) was added, and the cells were cultured at 37 ° C. in a 5% CO 2 concentration carbon dioxide incubator for 72 hours.
- the same number of normal human hepatocytes cultured on a plate without a scaffold was used.
- the non-adherent cells were washed away with a phosphate buffered saline solution which had been heated to 37 ° C in advance.
- Example 3 0.2 ml of a 25% trypsin solution (Invitrogen Corporation 15050-065) was added to each well and allowed to stand at 37 ° C in a carbon dioxide gas incubator. Thirty minutes later, liver parenchymal cells were collected, and the number of cells was counted using the CyQUANT Cell Proliferation Assay Kit (Molecular Probes) according to the manufacturer's instructions.
- the biological scaffold prepared under the conditions of Example 1 showed higher proliferative activity on human hepatocytes compared to a control plate without the scaffold.
- Example 1 improved Clio method
- hollow fiber membrane method Ibrinogen concentrate was prepared.
- the centrifuge tube containing the frozen plasma was transferred into a cooling centrifuge (KUB0TA 3740) in which the temperature in the chamber was set to ⁇ 2.5 ° C., and left for 30 minutes. Subsequently, the centrifuge tube was transferred to another cooling centrifuge in which the temperature of the champer was previously set to 12 ° C, and left for 30 minutes. Then, it was left still in a refrigerator (SANYO Medicool MPR-510, 4 ° C) for 30 minutes. Finally, centrifugation (l, 000g x 15 minutes, 1 ° C) was performed, and the supernatant was removed to obtain a fibrinogen concentrate.
- KUB0TA 3740 the temperature in the chamber was set to ⁇ 2.5 ° C., and left for 30 minutes.
- the centrifuge tube was transferred to another cooling centrifuge in which the temperature of the champer was previously set to 12 ° C, and left for 30 minutes. Then, it was left still in a refrigerator (SANYO Medicool MPR-510
- the fibrinogen was quantified using a commercially available fibrinogen measurement kit based on thrombin time (Fisher Scientific Pacific Hemostasis kit), and the measurement procedure was in accordance with the manufacturer's instructions.
- the amount of recovered fibrinogen was 14.3 mg.
- a fibrinogen concentrate was prepared using a hollow fiber membrane made of EVAL (EC—50 W, cutoff molecular weight: 300,000 Danoleton) manufactured by Kawasumi Danigaku Co., Ltd. Prepared by Aspirate method. Two bundles of 500 bm pieces of 20 cm were made. One bundle was first immersed in a container containing plasma, and aspirated from the inside of the hollow fiber by a peristaltic pump connected to the inside of the hollow fiber. 10 O mL of plasma was concentrated to 25 mL, and then the next bundle was dipped, aspirated, and concentrated to 8 mL. The time required for the concentration operation was 6 minutes for the first bundle and 11 minutes for the second bundle, for a total of 17 minutes.
- EVAL EC—50 W, cutoff molecular weight: 300,000 Danoleton
- Aspirate method Two bundles of 500 bm pieces of 20 cm were made. One bundle was first immersed in a container containing plasma, and aspirated from the inside of the hollow fiber by
- the concentration of fipurinogen in the concentrate was 8.3 mg / mL. Since the concentration in the source plasma was 1.73 mg / mL, a concentration ratio of 4.8 and a recovery rate of 38% could be obtained.
- Test Example 6 Cell proliferation stimulating activity on human fetal lung-derived fibroblasts (HEL)
- HEL human fetal lung-derived fibroblasts
- the scaffold activity of the biological scaffold prepared in Example 3 on human fetal lung-derived fibroblasts (HEL) was measured based on the cell growth stimulating activity.
- Various human fibrinogen concentrates prepared in Example 3 (adjusted with a medium so that the fibrinogen concentration becomes 5.63 mg / mL) 0.3 ml was added to a 12-well multiplate (Nippon Becton Dickinson No.
- the cell proliferation measurement test was performed by a colorimetric method using a CellTiter96 Aqueous One Solution Cell Proliferation Assay kit (Promega Corporation), and the measurement procedure followed the procedure attached to the manufacturer.
- the number of cells (absorbance at a wavelength of 490 nm) using Tisseel (a biological tissue adhesive manufactured by Baxter) scaffold adjusted to the same fibrinogen concentration as the scaffold was measured. And the relative value when As shown in Table 2, all of the biological scaffolds prepared in Example 3 showed higher cell proliferation activity when Tisseel was used as a scaffold, and it was confirmed that the biological scaffold activity was higher. .
- a fibrinogen concentrate was prepared using a hollow fiber membrane.
- the Discard method was adopted.
- Materials include: (1) hydrophilized polysulfone (cut-off molecular weight 300,000 daltons), (2) EVAL (force cut-off molecular weight 300,000 daltons), (3) PAN (polyatarilonitrile, cut-off molecular weight 200,000, 000 Dalton) and 4CDA (cellulose diacetate, cut-off molecular weight 350,000 Dalton) were used.
- Each of the small modules having a length of 10 cm and a diameter of 3 cm was filled with 2000 pieces and molded.
- Bin / Bout was set to 10 and 10 OmL of plasma was processed. The treated plasma volume was 1 OmL / min. The processing time was 10 minutes.
- Test Example 7 Cell proliferation stimulating activity against ⁇ ⁇ tracheal-derived fibroblasts (CCL-44)) ⁇ ⁇ tracheal-derived fibroblasts (ATCC strain number CCL-44) of the biological scaffold prepared in Example 4 was measured by cell growth stimulating activity.
- Various fibrinogen concentrates prepared in Example 4 (adjusted with a medium so that the fibrinogen concentration is 5.63 mg / mL) 0.3 ml is added to a 12-well multiplate (Nippon Becton Dickinson No. 3 5 304 4) The mixture was added on top, and 0.02 mL of a CCL-44 cell suspension containing 4 ⁇ 10 4 CCL-44 cells was further added. Add 0.3 mL of 31.3 NIHunits / ml thrombin solution (diluted from Baxta Biological Tissue Adhesive Tisseal) to quickly spread over the entire plate, and stir the plate.
- Example 5 Preparation of activated platelet and leukocyte-releasing substance and measurement of cell proliferation stimulating activity
- a filter capturing platelets and leukocytes was prepared as follows.
- Activated platelets and leukocyte-releasing substances prepared in Example 5 were added to fibroblasts, and cell proliferation stimulating activity was examined.
- 2 ⁇ 10 4 normal human fetal lung fibroblasts were seeded on a 12-well cell culture plate ( 35 3043, manufactured by Becton Dickinson Japan) (the volume of medium was 1 ml per well).
- the culture solution was prepared by adding sodium pyruvate (ICN) to DMEM (Invitrogen) to lmM, non-essential amino acid (ICN) and L-glutamine to 2 mM, and a final concentration of 10%.
- Fetal serum (StemCell Technologies) was added so that As a control, 0.5 NIH units / ml tonbin solution and a phosphate buffered saline solution were added to a 100 ⁇ L culture system.
- the recovered solution prepared in Example 5 was added thereto at 100 / zL, and cultured in a 5% carbon dioxide incubator for 3 days, and the number of cells was counted.
- the recovered solution containing activated platelets and leukocyte-releasing substances prepared in Examples 5 and 5 showed higher levels of fibroblasts than the phosphate buffered saline and thrombin solutions as controls. It showed cell growth stimulating activity.
- the activated platelets and leukocyte-releasing substance prepared in Example 5 were added to vascular endothelial cells, and the cell growth stimulating activity was examined.
- 2 ⁇ 10 4 normal human umbilical vein endothelial cells were seeded on a 12-well cell culture plate (353043, manufactured by Nippon Becton Dickinson) (the medium volume was 1 ml per well).
- fetal serum StemCell Technologies
- An ethylene Z-Butyl alcohol copolymer was used as the hollow fiber membrane. It has an inner diameter of 1750 ⁇ m (EC-50 W; manufactured by Kawasumi Chemical Co., Ltd.).
- a small module having a length of 100 cm and a diameter of 3 cm was filled with 2000 pieces and molded. Discard method was adopted.
- Bin / Bout was set to 10 and 5 O mL of plasma was processed, a 7.7 mg / mL concentrated solution of fibrinogen could be obtained.
- the treated plasma volume was 1 OmL / min, and the treatment time was 5 minutes. Since the concentration of fibrinogen in the plasma of the raw material was 1.7 mg / mL, the concentration ratio was 4.5 times.
- the Aspirate method was attempted using the same hollow fiber membrane as in Example 6. 500 cm pieces were bundled together, both ends were adhered, immersed in a container containing plasma, and suctioned from the inside of the hollow fiber by a peristaltic pump connected to the inside of the hollow fiber. After concentrating 20 mL of plasma to 40 mL, the fibrinogen concentration was 8.9 mg / mL. Since the concentration in the source plasma was 1.9 mg / mL, a concentration factor of 4.7 times could be obtained.
- Example 8 The Aspirate method was attempted in the same manner as in Example 7. Four bundles of 500 cm bundles of 20 cm were made.
- one bundle was immersed in a container containing plasma, and suction was performed from the inside of the hollow fiber by a peristaltic pump connected to the inside of the hollow fiber. Twenty O mL of plasma was concentrated to 60 mL, and then the next bundle was immersed and aspirated. After concentrating to 20 mL, the third bundle was concentrated to 10 mL, and the fourth bundle was concentrated to 5 mL. The time required to complete the concentration operation up to the fourth bundle was 43 minutes. The fibrinogen concentration was 16.3 mg / mL. Since the concentration in the source plasma was 1.8 mg / mL, a 9-fold concentration ratio could be obtained.
- blood or plasma introduced into the blood or plasma inlet (2 1) passes through the hollow fiber membrane (2 4) and is converted into plasma-depleted polycytic cell fraction and plasma, or concentrated plasma and filtered plasma. It is separated and derived from outlets (2 2) and (2 3).
- filtered plasma plasma that has passed through the membrane
- concentrated plasma plasma concentrated without permeating the membrane
- the fibrinogen concentration of the plasma was 2.8 mg / mL
- the fibrinogen concentration of the filtered plasma was less than 1 mg / mL
- the fibrinogen concentration of the concentrated plasma was 42 mg / mL.
- the filtered plasma was placed in an activated thrombin plasma preparation device consisting of a polyvinyl chloride plasma storage bag (32) filled with physiological saline (33) and silicon beads (34), as shown in Fig. 8. After mixing with calcium-added physiological saline and silicon beads, the mixture was filtered with a filter for removing silicon beads. The filtered plasma was stored as activated thrombin plasma.
- a high-performance biological scaffold suitable for tissue regeneration can be provided. Since the fibrin-containing biological scaffold of the present invention has a proliferative activity on various cells, it can prevent bleeding, damage / healing, form artificial bones, artificial skin or artificial organs by adhesion / closure of tissues, and liver transplantation. It is useful for treatments such as surgery, mass production of albumin, and drug metabolism research.
- a method and system for producing a fibrin-containing biological scaffold which is quick, simple, safe and stable without risk of infection can be obtained.
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Abstract
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Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2003257684A AU2003257684A1 (en) | 2002-08-23 | 2003-08-25 | Fibrin-containing composition |
| EP03792825A EP1538196A1 (en) | 2002-08-23 | 2003-08-25 | Fibrin-containing composition |
| JP2004530614A JPWO2004018615A1 (ja) | 2002-08-23 | 2003-08-25 | フィブリン含有組成物 |
| US10/525,503 US20060128016A1 (en) | 2002-08-23 | 2003-08-25 | Fibrin-containing composition |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002243923 | 2002-08-23 | ||
| JP2002-243923 | 2002-08-23 | ||
| JP2002-244294 | 2002-08-23 | ||
| JP2002244294 | 2002-08-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2004018615A1 true WO2004018615A1 (ja) | 2004-03-04 |
Family
ID=31949572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2003/010692 Ceased WO2004018615A1 (ja) | 2002-08-23 | 2003-08-25 | フィブリン含有組成物 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20060128016A1 (ja) |
| EP (1) | EP1538196A1 (ja) |
| JP (1) | JPWO2004018615A1 (ja) |
| AU (1) | AU2003257684A1 (ja) |
| WO (1) | WO2004018615A1 (ja) |
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|---|---|---|---|---|
| JP2009297212A (ja) * | 2008-06-12 | 2009-12-24 | Hoya Corp | 高強度フィブリン成形体及び人工靭帯 |
| EP1729831B1 (en) * | 2004-03-29 | 2012-04-25 | Smith and Nephew, Inc. | Preparation of a nucleated cell and/or platelet concentrate from a physiological solution |
| JP2013502915A (ja) * | 2009-08-25 | 2013-01-31 | セルビシオ アンダルス デ サル | フィブリンおよびアガロース生体材料を用いる組織工学による、人工組織の製造 |
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| US7622562B2 (en) | 2002-06-26 | 2009-11-24 | Zimmer Orthobiologics, Inc. | Rapid isolation of osteoinductive protein mixtures from mammalian bone tissue |
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| US6083383A (en) * | 1998-06-25 | 2000-07-04 | Huang; Xun Yang | Apparatus for production of fibrin ogen or fibrin glue |
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2003
- 2003-08-25 EP EP03792825A patent/EP1538196A1/en not_active Withdrawn
- 2003-08-25 WO PCT/JP2003/010692 patent/WO2004018615A1/ja not_active Ceased
- 2003-08-25 AU AU2003257684A patent/AU2003257684A1/en not_active Abandoned
- 2003-08-25 JP JP2004530614A patent/JPWO2004018615A1/ja active Pending
- 2003-08-25 US US10/525,503 patent/US20060128016A1/en not_active Abandoned
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1729831B1 (en) * | 2004-03-29 | 2012-04-25 | Smith and Nephew, Inc. | Preparation of a nucleated cell and/or platelet concentrate from a physiological solution |
| JP2009297212A (ja) * | 2008-06-12 | 2009-12-24 | Hoya Corp | 高強度フィブリン成形体及び人工靭帯 |
| JP2013502915A (ja) * | 2009-08-25 | 2013-01-31 | セルビシオ アンダルス デ サル | フィブリンおよびアガロース生体材料を用いる組織工学による、人工組織の製造 |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2003257684A1 (en) | 2004-03-11 |
| US20060128016A1 (en) | 2006-06-15 |
| JPWO2004018615A1 (ja) | 2005-12-08 |
| EP1538196A1 (en) | 2005-06-08 |
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