WO2012039112A1 - コラーゲン/アパタイト配向性材料、及びコラーゲン/アパタイト配向性材料の製造方法 - Google Patents
コラーゲン/アパタイト配向性材料、及びコラーゲン/アパタイト配向性材料の製造方法 Download PDFInfo
- Publication number
- WO2012039112A1 WO2012039112A1 PCT/JP2011/005203 JP2011005203W WO2012039112A1 WO 2012039112 A1 WO2012039112 A1 WO 2012039112A1 JP 2011005203 W JP2011005203 W JP 2011005203W WO 2012039112 A1 WO2012039112 A1 WO 2012039112A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- collagen
- orientation
- apatite
- solution
- calcium
- Prior art date
Links
Images
Classifications
-
- 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
- A61L27/24—Collagen
-
- 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
- A61L27/02—Inorganic materials
- A61L27/12—Phosphorus-containing materials, e.g. apatite
-
- 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
- A61L27/28—Materials for coating prostheses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/36—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix
- A61L27/38—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix containing added animal cells
- A61L27/3804—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix containing added animal cells characterised by specific cells or progenitors thereof, e.g. fibroblasts, connective tissue cells, kidney cells
- A61L27/3821—Bone-forming cells, e.g. osteoblasts, osteocytes, osteoprogenitor cells
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/40—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material
- A61L27/44—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material having a macromolecular matrix
- A61L27/46—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material having a macromolecular matrix with phosphorus-containing inorganic fillers
-
- 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
- C07K14/78—Connective tissue peptides, e.g. collagen, elastin, laminin, fibronectin, vitronectin, cold insoluble globulin [CIG]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2430/00—Materials or treatment for tissue regeneration
- A61L2430/02—Materials or treatment for tissue regeneration for reconstruction of bones; weight-bearing implants
Definitions
- the present invention relates to a collagen / apatite oriented material and a method for producing a collagen / apatite oriented material, and in particular, a collagen / apatite oriented material using collagen having orientation and a method for producing a collagen / apatite oriented material.
- a collagen / apatite oriented material and in particular, a collagen / apatite oriented material using collagen having orientation and a method for producing a collagen / apatite oriented material.
- Non-oriented collagen has long been used as a substrate material for cell culture.
- many collagens with orientation are found in the human body, and collagen / apatite is oriented according to the site of bone, but the orientation of collagen / apatite in functions such as bone growth and strength The role of is considered to be great.
- Patent Document 1 As a method for producing a collagen substrate having orientation, it is generally known to apply a strong magnetic field in the process of forming collagen fibers (Patent Document 1). Further, a method of spin-coating collagen gel is known (Patent Document 2).
- Patent Document 3 As a method for producing a living hard tissue similar to bone or the like by calcifying collagen, seeding of osteoblasts is generally known (Patent Document 3).
- Patent Document 4 In addition to the aforementioned seeding of osteoblasts, as a method for synthesizing hydroxyapatite known as the main component of bone and teeth, a method of alternately immersing a substrate such as a polymer material in a calcium solution and a phosphate solution has been proposed (Patent Document 4, Non-Patent Document 1).
- Patent Document 5 the production of a collagen / apatite complex by a simultaneous dropping method has been proposed.
- Patent Documents 1 and 2 there has been a technology for orienting collagen alone, but it has not been possible to produce a collagen / apatite orientation material with controlled orientation.
- the orientation is not controlled.
- the said patent document 4 is considered to be based on the conventionally known self-organization reaction, the attempt to produce an orientation material by this method does not exist in a micro order or a macro order.
- an object of the present invention is to provide a collagen / apatite orientation material with controlled orientation and a method for producing a collagen / apatite orientation material with controlled orientation.
- the present inventors have intensively studied the orientation of collagen and apatite having orientation, and have found the present invention.
- the method for producing a collagen / apatite alignment material according to the present invention is substantially the same as the orientation direction of the collagen by preparing collagen having orientation and seeding osteoblasts or mesenchymal stem cells.
- An apatite having orientation is produced and fixed on the surface and / or inside of the collagen.
- the osteoblast is an osteoblast-like cell or an osteoblast collected from a living body.
- a method for producing a collagen / apatite alignment material comprising preparing a collagen having orientation, a solution containing calcium ions and substantially free of phosphate ions, and a phosphate ion.
- the solution containing calcium ions and substantially free of phosphate ions is a calcium chloride aqueous solution, a calcium acetate aqueous solution, a calcium chloride tris. It is characterized by being a buffer solution, a tris buffer solution of calcium acetate, or a mixed solution thereof.
- the aqueous solution containing phosphate ions and substantially free of calcium ions is an aqueous sodium hydrogen phosphate solution, sodium ammonium dihydrogen phosphate. It is characterized by being an aqueous solution, a tris buffer solution of sodium hydrogen phosphate, a tris buffer solution of sodium ammonium dihydrogen phosphate, or a mixed solution thereof.
- the collagen / apatite orientation material of the present invention is a collagen having orientation and apatite generated and fixed on the surface and / or inside of the collagen, and substantially coincides with the orientation direction of the collagen. And apatite having orientation.
- the orientation is uniaxial orientation, helical orientation, biaxial orientation, two-dimensional orientation, triaxial orientation or three-dimensional orientation.
- the material is characterized by having a macro size of millimeter order or more.
- the collagen having the alignment property is coated on a substrate made of metal, ceramics, polymer material, or biological material.
- the material is characterized in that calcification is caused by the apatite being deposited on the surface and / or inside of the collagen.
- the present invention there is an advantageous effect that it is possible to control the orientation and orientation of collagen / apatite having a macro size of millimeter order or more. Further, in the present invention, since the biological hard tissue has a collagen / apatite orientation according to the site, the orientation was controlled by the present invention so as to be equal to the orientation of each part of the normal biological hard tissue. There is an advantageous effect that a biocompatible material can be provided.
- the orientation in bone tissue is considered to play an important role in the strength in a specific direction.
- the femur has a collagen / apatite c-axis orientation along the bone long axis.
- a macro-sized bone defect occurs, it takes a long time to restore the original orientation. It is extremely difficult to restore the original orientation of the tissue.
- the orientation material of the macro size of the order of millimeter or more obtained by the present invention according to the orientation of the original bone, early bone regeneration and the original orientation can be achieved. It is expected that sex can be imparted.
- the method for producing a collagen / apatite orientation material of the present invention and the orientation material provide a collagen / apatite orientation material with controlled orientation for research and development of basic medicine for future bone medical treatment. At the same time, there is an advantageous effect that a practical biocompatible material for bone regeneration can be provided.
- FIG. 1 is a photograph of a collagen gel having an orientation immediately after being prepared in PBS.
- FIG. 2 shows the Raman spectrum of oriented collagen.
- (I) is a diagram showing the spectrum when the laser polarization direction is parallel to the collagen traveling direction, and (ii) is the spectrum when it is perpendicular.
- FIG. 3 is a photograph showing the results of alizarin red S staining.
- FIG. 4 is a diagram showing an X-ray diffraction result of a collagen substrate after 4 weeks of culture.
- FIG. 5 is a diagram showing an X-ray diffraction result of collagen after 30 alternate immersions.
- the collagen / apatite orientation material of the present invention is mainly prepared by preparing a collagen (substrate) having orientation, seeding osteoblasts, preparing a collagen (substrate) having orientation, calcium solution and phosphoric acid It can be manufactured by a method of alternately dipping in a solution or a method of SBF (pseudo body fluid) dipping.
- the apatite having an orientation substantially coinciding with the orientation direction of the collagen (substrate) is macro-sized on the collagen (substrate) and / or inside the collagen with a macro size of millimeter order or more. It can be generated and fixed. That is, it is possible to produce a collagen / apatite orientation material while controlling the orientation on and / or inside the collagen (substrate).
- the method for producing a collagen / apatite alignment material comprises preparing an oriented collagen and seeding osteoblasts or mesenchymal stem cells to thereby substantially align the orientation of the collagen.
- the apatite having the above is produced and fixed on the collagen and on the surface and / or inside of the collagen.
- Collagen having orientation means collagen in which the traveling direction of fibrous collagen such as a single collagen gel or dry collagen gel is aligned in a certain direction.
- oriented collagen is coated on a substrate made of metal, ceramics, polymer material, or biological material (also referred to as collagen substrate), oriented collagen is processed into various shapes.
- the orientation of apatite means that the produced apatite is aligned in a certain orientation on the crystal structure.
- the biological apatite to which the present invention is applied is a strongly anisotropic ionic crystal having a crystal structure similar to a hexagonal column defined by the a-axis and c-axis, and the c-axis of the biological apatite is Although it is known that it substantially coincides with the traveling direction of the fibrous collagen, it is preferable in the present invention that the c-axis of the produced apatite substantially coincides with the traveling direction of the fibrous collagen.
- oriented collagen as a starting material
- a blast enters may be envisaged, but such a case can also be included.
- the shape and orientation direction can be freely controlled by preparing the shape and orientation direction of the oriented collagen that is the starting material according to the needs of the orientation material that is the final product.
- the method for preparing oriented collagen is not particularly limited by conventional methods.
- a method of giving a flow in a certain direction to the collagen solution in the process of gelling the collagen solution has been proposed, but other methods may be used.
- Other methods include a method of applying a strong magnetic field in the process of forming collagen fibers, a method of spin-coating a collagen gel, and a method of mechanically (physically) stretching the collagen gel in a certain direction. Can do.
- the collagen fibers are arranged perpendicular to the magnetic field, so if the magnetic field is continuously applied from the same direction, the two-dimensional When a rotating magnetic field is applied, the uniaxial orientation is obtained.
- a method using a magnetic field can be used.
- a sheet-like shape is included to use the flow of liquid. Collagens with different orientations in three dimensions can be produced by laminating them in various shapes.
- the oriented collagen (collagen alone) prepared in the examples can be obtained by imparting orientation by a process of solidifying as a collagen gel using the flow of the collagen solution.
- it is a string-shaped collagen in the photographs of examples described later, it is possible to produce oriented collagen or collagen substrates of various shapes (lines, surfaces, solids) such as a wide ribbon shape.
- it is also possible to control the degree of orientation by controlling the flow speed. Therefore, even within the same collagen, it is possible to give a distribution by controlling the direction of orientation and the degree of orientation, so by using such a collagen or collagen substrate in the present invention, by extension, apatite Regarding the orientation, it is possible to control the direction of orientation and the degree of orientation (that is, control of orientation distribution).
- the concentration of the collagen solution is 10 mg / ml so that the obtained collagen or collagen substrate has sufficient mechanical strength.
- the above is preferable, but it may be about 3 mg / ml or more.
- the origin of collagen does not matter.
- the species, tissue site, age, etc. of the animal from which it is derived are not particularly limited. For example, those extracted from animals such as rat tail, pig skin, and cow skin (including atelo) can be used. That is, collagen obtained from the skin, bone, cartilage, tendon, organ, etc.
- collagen-like proteins obtained from the skin, bones, cartilage, fins, scales, organs, etc. of fish eg cod, flounder, flounder, salmon, trout, tuna, mackerel, Thai, sardine, shark etc.
- the extraction method of collagen is not specifically limited, A general extraction method can be used.
- collagen obtained by gene recombination technology may be used.
- atelocollagen treated with an enzyme to suppress antigenicity can be used.
- Collagen includes acid-soluble collagen, salt-soluble collagen, unmodified soluble collagen such as enzyme-solubilized collagen (Atelocollagen), acylation such as succinylation and phthalation, esterification such as methylation, and deamidation of alkali solubilization It is possible to use chemically modified collagen such as glycated, and insoluble collagen such as tendon collagen.
- enzyme-solubilized collagen Atelocollagen
- acylation such as succinylation and phthalation
- esterification such as methylation
- deamidation of alkali solubilization It is possible to use chemically modified collagen such as glycated, and insoluble collagen such as tendon collagen.
- the orientation direction and degree of orientation of the obtained collagen can be quantitatively evaluated by, for example, a Raman spectroscopic microscope.
- Raman spectroscopy is a spectroscope that examines the light scattered by the molecules and contains components that are frequency-modulated by the vibrations of the molecules. Information on the composition and crystal structure of the analysis target can be obtained. The orientation of the film can be analyzed.
- the apatite having the orientation substantially coincident with the orientation orientation of the collagen is obtained by seeding osteoblasts or mesenchymal stem cells with respect to the collagen having the orientation thus obtained. Generate and fix on top.
- the osteoblast is an osteoblast-like cell or an osteoblast collected from a living body.
- the cells may be those obtained by differentiating mesenchymal stem cells isolated from bone marrow into osteoblasts, or odontoblasts or enamel blasts. (A cell that can differentiate into a hard tissue, that is, a calcifying cell).
- an osteoblast-like cell an osteoblast-like cell MC3T3-E1 can be used as an osteoblast-like cell MC3T3-E1 can be used.
- osteoblast precursor cell lines established from the calvaria of C57BL / 6 newborn mice can be used (the same osteoblast, but there is a difference between primary culture and cell line) .
- mouse MC3T3-E1 human Saos-2, MG63, rat UMR106, ROS17 / 2.8, etc. can be used as osteoblast-like cells.
- MC3T3-E1 is an osteoblast progenitor cell line established from the calvaria of C57BL / 6 newborn mice.
- One type of cell line used as an osteoblast differentiation model is MC3T3-E1.
- the osteoblasts or mesenchymal stem cells when osteoblasts or mesenchymal stem cells are seeded on collagen having orientation, the osteoblasts or the like enter the surface of collagen or inside collagen.
- the osteoblasts or the mesenchymal stem cells can also be grown with orientation.
- Osteoblasts are basically cultured in a MEM- ⁇ serum medium, and can be cultured in a 37 ° C. 5% CO 2 environment for about 24 hours or more.
- osteoblasts there is also a possibility that cells that are embedded in a calcified site and become bone cells with reduced activity also in cultured cells.
- osteoclast culture system since osteoclast culture system is used, osteoclasts are considered to be absent, but it cannot be said that the primary culture contains 100% of osteoclasts, bone cells, fibroblasts, etc. Bone cells, bone cells, fibroblasts, etc. may be mixed.
- the supply source of phosphoric acid as an apatite component will be described as follows.
- a source of phosphoric acid glycerophosphoric acid, ⁇ -glycerophosphoric acid and the like can be added to the medium under the culture conditions.
- Such glycerophosphoric acid can be a source of phosphoric acid in calcification. This is further decomposed by ALP to become inorganic phosphoric acid.
- differentiated osteoblasts produce collagen (occurs in the order of collagen production ⁇ calcification).
- collagen production can be promoted by adding ascorbic acid. That is, the cells on the collagen (substrate) can themselves produce collagen separately from the substrate.
- calcification is briefly explained as follows.
- collagenous calcification there are two types of calcification, collagenous calcification and ectopic calcification (non-collagenous), but in the present invention, calcification deposited in a fibrous form is confirmed by calcium staining. Therefore, it is considered that collagenous calcification is occurring.
- the advantage of calcification is an increase in strength of the oriented material. Calcified collagen alignment material in the order of mm has a structure similar to bone, and the strength is increased by calcification (for example, it is obvious to pinch with tweezers). Is advantageous.
- the deposition of calcium phosphate crystals (hydroxyapatite) on a bone matrix (consisting of collagen and non-collagenous protein) is called calcification, thereby forming bone tissue.
- Osteoblasts secrete stromal vesicles budding.
- Matrix vesicles are structures surrounded by a lipid bilayer with a diameter of about 40 to 200 nm.
- the substrate vesicle contains an enzyme and a physiologically active substance.
- Matrix vesicles are secreted almost simultaneously with the formation of macromolecular substances such as collagen fibers. Matrix vesicles confined to the mesh of these substances determine the calcification site.
- the matrix vesicle becomes the nucleus of the initial calcification, and a crystal-like structure of hydroxyapatite appears in the vesicle.
- the crystal-like structure grows and eventually ruptures the vesicle membrane.
- calcification spreads to the vesicle membrane and becomes a calcified sphere. Larger calcified spheres reach the surrounding collagen fibrils. The calcified area is enlarged by collagenous calcification that proceeds along collagen fibrils.
- the calcification of collagen is occurring because the calcification deposited in the fiber form is confirmed by calcium staining.
- calcification occurs, but in addition to the calcification of the composite produced this time, that is, the calcification occurring in the collagen base of the template, the calcification of the produced collagen (so-called original It is thought that there is a meaning of collagenous calcification).
- the orientation direction and degree of orientation of the apatite produced and fixed on and / or inside the collagen on the collagen can be easily evaluated by, for example, a micro-region X-ray diffractometer.
- a micro-region X-ray diffractometer since there are still many unclear parts about the arrangement direction of osteoblasts and the arrangement of the c-axis of apatite, since the cells are arranged, the (crystallographic) arrangement of apatite (calcified) is claimed. It is thought that it cannot be done.
- the method for producing a collagen / apatite alignment material comprises preparing a collagen having orientation, a solution containing calcium ions and substantially free of phosphate ions, a solution containing phosphate ions and substantially calcium.
- collagen having orientation can be prepared based on the description in the example using the osteoblast described above.
- a method of giving a flow in a certain direction to the collagen solution in the process of gelling the collagen solution has been proposed, but other methods may be used.
- the preferred concentration, origin, etc. of the collagen solution can also be the same as the method for producing a collagen / apatite-oriented material by seeding osteoblasts already described.
- the solution containing calcium ions and substantially free of phosphate ions is a calcium chloride aqueous solution, a calcium acetate aqueous solution, a calcium chloride tris buffer solution, a calcium acetate tris buffer solution, or a mixed solution thereof. It can be.
- the production rate of hydroxyapatite also referred to as HAp
- the calcium solution usually contains calcium ions and does not substantially contain phosphate ions. It is preferable that
- the calcium ion concentration is preferably 0.01 to 10 mol / liter, particularly preferably 0, considering the production rate and production efficiency of HAp. .1 to 1 mol / liter.
- the pH of the calcium solution is not particularly limited, but when a Tris buffer solution is used, it is preferably pH 6 to 10, particularly preferably pH 7.4.
- the aqueous solution containing phosphate ions and substantially free of calcium ions is an aqueous solution of sodium hydrogen phosphate, an aqueous solution of sodium ammonium dihydrogen phosphate, a tris buffer solution of sodium hydrogen phosphate, phosphoric acid It can be a tris buffer solution of sodium ammonium dihydrogen, or a mixed solution thereof.
- the phosphate solution is usually an aqueous solution containing phosphate ions and substantially free of calcium ions.
- the phosphate ion concentration is preferably 0.01 to 10 mol / liter, particularly preferably considering the production rate and production efficiency of HAp. 0.1 to 1 mol / liter.
- the pH of the phosphoric acid solution is not particularly limited, but when a Tris buffer solution is used, it is preferably pH 6 to 10, particularly preferably pH 7.4.
- a combination of the calcium solution and the phosphoric acid solution is not particularly limited, and examples thereof include a combination of a calcium chloride aqueous solution and a sodium hydrogen phosphate aqueous solution, and a combination of a calcium acetate aqueous solution and a sodium ammonium dihydrogen phosphate aqueous solution.
- other ions may be present as long as the desired object of the present invention is not impaired, but when magnesium ions (Mg 2+ ) of 2.5 mM or more are present May form tricalcium phosphate (TCP).
- the collagen or collagen substrate prepared as described above is immersed in an aqueous calcium solution for 10 seconds to 120 minutes, preferably 1 minute to 60 minutes, particularly preferably about 2 minutes, it is immersed in ultrapure water for 5 seconds to 120 seconds. Wash for about 30 seconds, preferably about 30 seconds, and then immersed in an aqueous phosphoric acid solution for 10 seconds to 120 minutes, preferably 1 minute to 60 minutes, particularly preferably about 2 minutes, 5 seconds to 120 minutes, preferably about 30 seconds or more It can be performed by washing in pure water. This can be carried out for 1 to 100 cycles, preferably 5 to 70 cycles, particularly preferably about 20 to 50 cycles. From the viewpoint of surely performing calcification and orientation, it can be carried out preferably for about 10 cycles or more for about 30 cycles.
- the orientation direction and the degree of orientation of the apatite produced and fixed on the surface and / or inside of collagen on the collagen (substrate) can be easily evaluated by, for example, a micro-region X-ray diffractometer.
- the method for producing a collagen / apatite alignment material of the present invention comprises preparing a collagen having orientation and coating the inside and / or surface of the collagen with apatite deposited from a simulated body fluid.
- the apatite having an orientation substantially coinciding with the orientation direction of the collagen is generated and fixed on the collagen and on the surface and / or inside of the collagen.
- the surface and / or the inside of collagen can be coated with apatite deposited from a simulated body fluid.
- the surface mentioned here specifically includes the surface of cavities and voids existing in collagen in addition to the entire surface of collagen.
- the apatite may be coated on the entire surface or may be coated on a part of the surface.
- collagen can be immersed in a simulated body fluid and it can carry out by depositing apatite.
- Simulated body fluid refers to a solution containing salt in the body fluid, and the salt component is NaCl, NaHCO 3 , KCl, K 2 HPO 4 , MgCl 2 , CaCl 2 , Na 2 SO 4, etc. It is a body fluid containing NaCl, NaHCO 3 , K 2 HPO 4 , and CaCl 2 .
- the salt concentration of the simulated body fluid is in the range of 10 times the concentration in normal body fluid, and the produced collagen is immersed in an aqueous solution containing those salts.
- the soaking time is one day or longer, and a longer amount of apatite can be coated.
- the immersion temperature is in the range of 4 to 40 ° C., depending on the type of collagen, denaturation may occur at the time of immersion, so it is necessary to perform immersion at a temperature lower than the denaturation temperature of the collagen used.
- the coating can be completed in a short time by coating at the highest possible temperature.
- the collagen / apatite orientation material obtained in this way is composed of collagen and apatite having an orientation substantially coinciding with the orientation orientation of the collagen, and the apatite is precisely on the collagen, It is generated and fixed on the surface and / or inside of collagen on collagen. That is, the collagen / apatite alignment material of the present invention can be obtained by the above-described method for producing the collagen / apatite alignment material of the present invention.
- the collagen / apatite orientation material of the present invention is a collagen having orientation and apatite produced and fixed on the collagen surface and / or on the inside of the collagen, precisely, the orientation direction of the collagen. And apatite having an orientation substantially coincident with the above.
- the orientation is uniaxial orientation, helical orientation, biaxial orientation, two-dimensional orientation, triaxial orientation or three-dimensional orientation.
- the above-mentioned calcification is caused by the deposition of apatite on and / or inside the collagen. Therefore, in a preferred embodiment, the collagen / apatite alignment material of the present invention is also characterized by occurrence of calcification. Since calcification occurs in this manner, the structure is similar to that of bone, and the strength is increased by calcification (for example, it is obvious to pinch with tweezers), which is advantageous when installed in a living body. It is.
- the oriented product of the calcified product of the prior art is a product that orients apatite to atelocollagen (collagen raw material) in a self-organizing manner, and has an apatite having an orientation substantially coinciding with the orientation orientation of collagen. It is not produced or fixed on the surface and / or inside of collagen.
- this invention what was made into the template shape in the state which orientated the atelocollagen is calcified and orientated.
- the material has a macro size of a millimeter order or more.
- the collagen having the orientation is coated on a substrate made of metal, ceramics, a polymer material, or a biomaterial.
- the coating method is not particularly limited, and is a conventional method.
- a collagen gel was prepared as oriented collagen (substrate) of millimeter order or higher.
- Collagen gel is a rat container containing 9.3 mg / ml rat tail-derived type I collagen solution (BD) and phosphate buffered saline (PBS) pH 7.4 through a nozzle with an inner diameter of 0.38 mm.
- BD 9.3 mg / ml rat tail-derived type I collagen solution
- PBS phosphate buffered saline
- FIG. 1 shows a photograph of a collagen gel having orientation immediately after being prepared in PBS.
- FIG. 2 shows the result of evaluating the polarization direction of the laser beam in the parallel direction and the perpendicular direction with respect to the collagen running direction with the intensity of amide I and mid III.
- the peak of amide III is due to the vibration of the CN bond located parallel to and perpendicular to the collagen fiber.
- FIG. 2 the spectrum of the polarization direction parallel to the direction of the laser beam with respect to the collagen running direction, when compared with the peak intensity of CH 3 bending vibration near 1450cm -1, amideI (1670 cm -1 ) peak intensity vertical The direction was higher than the parallel direction.
- a peak of CN bond vibration positioned perpendicular to the collagen fiber appears in the vicinity of Raman shift 1270-1300 cm ⁇ 1 . That is, it was found that collagen fibers were oriented in the long axis direction of the collagen gel.
- the apatite having an orientation substantially coincident with the orientation orientation of the collagen (substrate) is obtained on the collagen (substrate). It was generated and fixed at a macro size of millimeter order or more.
- osteoblasts mouse (0-2 day old) calvarial primary osteoblasts were used, and the culture medium was MEM- ⁇ + 10% fetal bovine serum 100 U / mL penicillin, 100 ⁇ g / mL streptomycin for 1 week.
- MEM- ⁇ + 10% fetal bovine serum 100 U / mL penicillin, 100 ⁇ g / mL streptomycin + 50 ⁇ g / ml ascorbic acid + 10 mM ⁇ -glycerophosphate + 50 nM dexamethasone was cultured for 3 weeks. The medium was changed twice / week.
- the seeding density was 2 ⁇ 10 4 / mL, and the environment was 37 ° C. and 5% CO 2 .
- the culture dish used was a 35 mm polystyrene dish.
- FIG. 3 is a photograph showing the results of alizarin red S staining in the culture process. Alizarin red stains calcium salts due to its ability to bind to metal ions, and thus can label collagen mineralization. FIG. 3 shows that the calcification of the filamentous collagen gel proceeds with the culturing time.
- FIG. 4 is a diagram showing the X-ray diffraction results of the collagen / apatite alignment material after 4 weeks of culture.
- the (002) / (211) integrated intensity ratio is used as an index of orientation in the direction parallel to and perpendicular to the collagen fiber running direction, but (002) in the direction parallel to the collagen fiber running direction. It was found that the surface was remarkably oriented. That is, the apatite c-axis was successfully arranged on the oriented collagen (substrate).
- osteoblast-like cells and osteoblasts were arranged along the collagen orientation direction on the oriented collagen.
- a collagen / apatite alignment material was manufactured by a method of alternately immersing in a calcium solution and a phosphoric acid solution with respect to collagen having orientation (substrate).
- the calcium aqueous solution was alternately immersed in 200 mM CaCl 2 / Tris-HCl aq (pH 7.4), and the phosphoric acid aqueous solution was alternately immersed in 120 mM Na 2 HPO 4 aq.
- a more detailed alternate dipping process is as follows.
- Collagen (substrate) was immersed in an aqueous calcium solution at 37 ° C. for 2 minutes and then washed in ultrapure water for 30 seconds, then immersed in an aqueous phosphoric acid solution for 2 minutes and washed in ultrapure water for 30 seconds. This was performed as 30 cycles.
- FIG. 5 is a diagram showing an X-ray diffraction result of the collagen / apatite alignment material after 30 alternate immersions. From FIG. 5, the (002) / (211) integral intensity ratio is used as an index of orientation in the direction parallel to and perpendicular to the collagen fiber running direction, but (002) in the direction parallel to the collagen fiber running direction. It was found that the surface was remarkably oriented. That is, the apatite c-axis was successfully arranged on the oriented collagen (substrate). That is, the peak was confirmed by XRD in the alternate soaking ((002), (211), (310)) (apatite peak), thereby confirming calcification.
- treatment of diseases such as bone defects of in vivo tissues such as bone and other hard tissues, regenerative medicine and dentistry (particularly orthopedics, brain surgery, dentistry) and basic medicine can be expected to contribute to this field.
Abstract
Description
したがって、従来種々の複合材料が検討されているものの、コラーゲンの配向性に着目して、あたかも実際の骨組織が有している構造に近づけるべく、本発明におけるようなコラーゲンの配向性の方位と略一致した配向性を有するアパタイトを、コラーゲンの表面及び/又は内部に生成・固定させる試みはこれまで存在しない。
Claims (10)
- 配向性を有するコラーゲンを準備し、骨芽細胞又は間葉系幹細胞を播種することにより、前記コラーゲンの配向性の方位と略一致した配向性を有するアパタイトを、前記コラーゲンの表面及び/又は内部に生成・固定させることを特徴とするコラーゲン/アパタイト配向性材料の製造方法。
- 前記骨芽細胞が、骨芽細胞様細胞、又は生体より採取した骨芽細胞である請求項1記載の方法。
- 配向性を有するコラーゲンを準備し、カルシウムイオンを含み、実質的にリン酸イオンを含まない溶液と、リン酸イオンを含み、実質的にカルシウムイオンを含まない水溶液とに、前記コラーゲンを交互に浸漬することにより、前記コラーゲンの配向性の方位と略一致した配向性を有するアパタイトを、前記コラーゲンの表面及び/又は内部に生成・固定させることを特徴とするコラーゲン/アパタイト配向性材料の製造方法。
- 前記カルシウムイオンを含み、実質的にリン酸イオンを含まない溶液が、塩化カルシウム水溶液、酢酸カルシウム水溶液、塩化カルシウムのトリス緩衝溶液、酢酸カルシウムのトリス緩衝溶液、又はこれらの混合溶液である請求項3記載の方法。
- 前記リン酸イオンを含み、実質的にカルシウムイオンを含まない水溶液が、リン酸水素ナトリウム水溶液、リン酸二水素ナトリウムアンモニウム水溶液、リン酸水素ナトリウムのトリス緩衝溶液、リン酸二水素ナトリウムアンモニウムのトリス緩衝溶液、又はこれらの混合溶液である請求項3又は4項に記載の方法。
- 配向性を有するコラーゲンと、前記コラーゲンの表面及び/又は内部に生成・固定されたアパタイトであって、前記コラーゲンの配向性の方位と略一致した配向性を有するアパタイトと、からなることを特徴とするコラーゲン/アパタイト配向性材料。
- 前記配向性が、一軸配向、らせん配向、二軸配向、二次元配向、三軸配向又は三次元配向であることを特徴とする請求項6記載の材料。
- 前記材料が、ミリメーターオーダー以上のマクロサイズである請求項6又は7項に記載の材料。
- 前記配向性を有するコラーゲンが、金属、セラミックス、高分子材料、又は生体材料からなる基板にコートされていることを特徴とする請求項6~8項のいずれか1項に記載の材料。
- 前記材料において、前記コラーゲンの表面及び/又は内部に前記アパタイトが沈着することによって、石灰化が生じていることを特徴とする請求項6~9項のいずれか1項に記載の材料。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11826563.6A EP2620167B1 (en) | 2010-09-22 | 2011-09-15 | Oriented collagen/apatite material and method for producing oriented collagen/apatite material |
CN201180045330.7A CN103124567B (zh) | 2010-09-22 | 2011-09-15 | 胶原/磷灰石取向性材料、及胶原/磷灰石取向性材料的制造方法 |
US13/825,787 US9441031B2 (en) | 2010-09-22 | 2011-09-15 | Oriented collagen/apatite material and method for producing oriented collagen/apatite material |
EA201300381A EA201300381A1 (ru) | 2010-09-22 | 2011-09-15 | Ориентированный коллаген/апатитовый материал и способ производства ориентированного коллаген/апатитового материала |
US15/197,677 US20160361465A1 (en) | 2010-09-22 | 2016-06-29 | Oriented collagen/apatite material and method for producing oriented collagen/apatite material |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010211598A JP2012065742A (ja) | 2010-09-22 | 2010-09-22 | コラーゲン/アパタイト配向性材料、及びコラーゲン/アパタイト配向性材料の製造方法 |
JP2010-211598 | 2010-09-22 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/825,787 A-371-Of-International US9441031B2 (en) | 2010-09-22 | 2011-09-15 | Oriented collagen/apatite material and method for producing oriented collagen/apatite material |
US15/197,677 Division US20160361465A1 (en) | 2010-09-22 | 2016-06-29 | Oriented collagen/apatite material and method for producing oriented collagen/apatite material |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012039112A1 true WO2012039112A1 (ja) | 2012-03-29 |
Family
ID=45873616
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/005203 WO2012039112A1 (ja) | 2010-09-22 | 2011-09-15 | コラーゲン/アパタイト配向性材料、及びコラーゲン/アパタイト配向性材料の製造方法 |
Country Status (6)
Country | Link |
---|---|
US (2) | US9441031B2 (ja) |
EP (1) | EP2620167B1 (ja) |
JP (1) | JP2012065742A (ja) |
CN (1) | CN103124567B (ja) |
EA (1) | EA201300381A1 (ja) |
WO (1) | WO2012039112A1 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2013157638A1 (ja) * | 2012-04-19 | 2015-12-21 | 国立研究開発法人物質・材料研究機構 | HAp/Col複合体によって被覆された生体材料 |
US9737590B2 (en) | 2013-07-31 | 2017-08-22 | Vivex Biomedical, Inc. | Self-assembly of collagen fibers from dermis, fascia and tendon for tissue augmentation and coverage of wounds and burns |
EP3090764A1 (en) * | 2015-05-08 | 2016-11-09 | Université Catholique De Louvain | Compositions comprising mesenchymal stem cells and uses thereof |
JP2018187850A (ja) * | 2017-05-08 | 2018-11-29 | 富士フイルム株式会社 | 積層体及びその製造方法、コラーゲンフィルム、コラーゲン複合フィルム、転写方法、細胞培養用足場、創傷被覆材、美容用パック材 |
JP7143629B2 (ja) * | 2018-05-17 | 2022-09-29 | 日産化学株式会社 | 骨形成促進材 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10127753A (ja) * | 1996-10-28 | 1998-05-19 | Agency Of Ind Science & Technol | コラーゲン繊維−リン酸カルシウム化合物複合材料及びその製造法 |
JP2000327314A (ja) | 1999-05-11 | 2000-11-28 | Nof Corp | ハイドロキシアパタイト複合体の製造方法、その複合体及び生体適合性材料 |
JP2004041320A (ja) | 2002-07-09 | 2004-02-12 | Aruze Corp | 遊技機 |
JP2005278909A (ja) | 2004-03-30 | 2005-10-13 | Nipro Corp | 歯周組織再生用材料 |
JP2006280222A (ja) | 2005-03-31 | 2006-10-19 | Hitachi Metals Ltd | コラーゲンおよび細胞等の分子配向用磁気回路およびそれを用いた装置 |
JP2010148691A (ja) | 2008-12-25 | 2010-07-08 | Osaka Univ | 積層コラーゲンゲルの製造方法、配向方法およびそれらの方法により製造された積層コラーゲンゲル |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5532217A (en) * | 1992-04-24 | 1996-07-02 | Silver; Frederick H. | Process for the mineralization of collagen fibers, product produced thereby and use thereof to repair bone |
JPH11319068A (ja) | 1998-05-12 | 1999-11-24 | Menicon Co Ltd | 人工皮膚用基材およびその製法 |
US6387414B1 (en) | 1999-08-05 | 2002-05-14 | Nof Corporation | Method for preparing hydroxyapatite composite and biocompatible material |
DE19956503A1 (de) | 1999-11-24 | 2001-06-21 | Universitaetsklinikum Freiburg | Spritzbares Knochenersatzmaterial |
IL159177A0 (en) * | 2001-06-20 | 2004-06-01 | Prochon Biotech Ltd | Antibodies that block receptor protein tyrosine kinase activation, methods of screening for and uses thereof |
JP4408603B2 (ja) * | 2001-10-19 | 2010-02-03 | 独立行政法人科学技術振興機構 | 有機無機複合生体材料およびその製造方法 |
US7514249B2 (en) * | 2002-04-18 | 2009-04-07 | The University Of Florida Research Foundation, Inc. | Biomimetic organic/inorganic composites |
EP1566186B1 (en) | 2002-11-06 | 2008-01-09 | National Institute for Materials Science | Apatite/collagen crosslinked porous material containing self-organized apatite/collagen composite and process for producing the same |
CN1893986A (zh) * | 2003-10-15 | 2007-01-10 | 独立行政法人科学技术振兴机构 | 利用转录因子用于骨/软骨再生的植入物 |
JP2006020222A (ja) | 2004-07-05 | 2006-01-19 | Hitachi Kokusai Electric Inc | 情報伝送装置 |
US20080033550A1 (en) | 2004-08-24 | 2008-02-07 | Gunze Limited | Process For Producing Collagen Sponge, Process For Producing Artificial Skin, Artificial Skin And Cell Tissue Culture Substrate |
US8082135B2 (en) * | 2005-06-13 | 2011-12-20 | The Regents Of The University Of California | Method and system for modeling bone structure |
EP1902739A1 (en) | 2006-09-20 | 2008-03-26 | Centre National De La Recherche Scientifique (Cnrs) | Synthetic multi-layer structures comprising biopolymer fibres |
US20090028921A1 (en) | 2007-06-18 | 2009-01-29 | New Jersey Institute Of Technology | Electrospun Ceramic-Polymer Composite As A Scaffold For Tissue Repair |
JP5525823B2 (ja) | 2007-12-28 | 2014-06-18 | 満 明石 | 積層コラーゲンゲルの作製方法及び積層コラーゲンゲル |
JP5467554B2 (ja) * | 2008-04-25 | 2014-04-09 | HOYA Technosurgical株式会社 | 粉末状のアパタイト/コラーゲン複合体、形状賦形型の人工骨ペースト、及びそれらの製造方法 |
CN101554493B (zh) | 2008-07-31 | 2013-01-23 | 华南理工大学 | 颗粒定向排列的纳米羟基磷灰石/胶原支架的制备方法 |
RU2500432C2 (ru) | 2008-08-11 | 2013-12-10 | КоллЭнджин, Инк. | Биокомпозиты и способы их получения |
FR2940620B1 (fr) | 2008-12-26 | 2012-03-30 | Hoya Corp | Os artificiel pouvant etre resorbe et remplace par un os autogene, et procede pour sa production |
WO2010095427A1 (ja) | 2009-02-17 | 2010-08-26 | 株式会社日本触媒 | ポリアクリル酸系吸水性樹脂粉末およびその製造方法 |
WO2010101639A1 (en) * | 2009-03-04 | 2010-09-10 | The Board Of Trustees Of The Leland Stanford Junior University | Oriented collagen gel |
-
2010
- 2010-09-22 JP JP2010211598A patent/JP2012065742A/ja active Pending
-
2011
- 2011-09-15 EA EA201300381A patent/EA201300381A1/ru unknown
- 2011-09-15 CN CN201180045330.7A patent/CN103124567B/zh active Active
- 2011-09-15 US US13/825,787 patent/US9441031B2/en active Active
- 2011-09-15 EP EP11826563.6A patent/EP2620167B1/en active Active
- 2011-09-15 WO PCT/JP2011/005203 patent/WO2012039112A1/ja active Application Filing
-
2016
- 2016-06-29 US US15/197,677 patent/US20160361465A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10127753A (ja) * | 1996-10-28 | 1998-05-19 | Agency Of Ind Science & Technol | コラーゲン繊維−リン酸カルシウム化合物複合材料及びその製造法 |
JP2000327314A (ja) | 1999-05-11 | 2000-11-28 | Nof Corp | ハイドロキシアパタイト複合体の製造方法、その複合体及び生体適合性材料 |
JP2004041320A (ja) | 2002-07-09 | 2004-02-12 | Aruze Corp | 遊技機 |
JP2005278909A (ja) | 2004-03-30 | 2005-10-13 | Nipro Corp | 歯周組織再生用材料 |
JP2006280222A (ja) | 2005-03-31 | 2006-10-19 | Hitachi Metals Ltd | コラーゲンおよび細胞等の分子配向用磁気回路およびそれを用いた装置 |
JP2010148691A (ja) | 2008-12-25 | 2010-07-08 | Osaka Univ | 積層コラーゲンゲルの製造方法、配向方法およびそれらの方法により製造された積層コラーゲンゲル |
Non-Patent Citations (7)
Title |
---|
AIRA MATSUGAKI ET AL.: "Collagen Kiban-jo deno Kotsuga Saibo ni yoru Sekkaika Kyodo", ABSTRACTS OF THE JAPAN INSTITUTE OF METALS, vol. 147TH, 25 September 2010 (2010-09-25), pages 394, XP008170347 * |
HAJIME SHINOHARA ET AL.: "'Butsuri Shigeki to Seitai Hanno' Jiba o Mochiita Hone Saisei no Kento", THE JOURNAL OF PHYSICAL MEDICINE, vol. 19, no. 3, 30 November 2008 (2008-11-30), pages 166 - 171, XP008169284 * |
M. KIKUCHI; S. ITO; S. ICHINOSE; K. SHINOMIYA; J. TANAKA: "Self-organization mechanism in a bone-like hydroxyapatite/collagen nanocomposites synthesized in vitro and its biological reaction in vivo", BIOMATERIALS, vol. 22, 2001, pages 1705 - 1711, XP004245928, DOI: doi:10.1016/S0142-9612(00)00305-7 |
See also references of EP2620167A4 * |
T.TAGUCHI; A.KISHIDA; M.AKASHI: "Hydroxyapatite Formation on/in Poly(vinyl alcohol) Hydrogel Matrices using a Novel Alternate Soaking Process(I", CHEM. LETT., 1998, pages 711 - 712, XP009078063 |
TARO TAKEUCHI ET AL.: "Haikoka Yukishitsu Kiban-jo deno Kinzoku Genso Gan'yu Apatite no Sekishutsu Kyodo", ABSTRACTS OF THE JAPAN INSTITUTE OF METALS, vol. 145TH, 15 September 2009 (2009-09-15), pages 494, XP008170346 * |
YOKOGAWA Y ET AL.: "Calcium Phosphate Formation on Highly-oriented Collagen Fibrls", CHEM. LETT., 5 June 1999 (1999-06-05), pages 527 - 528, XP008170344 * |
Also Published As
Publication number | Publication date |
---|---|
EP2620167B1 (en) | 2017-04-05 |
CN103124567B (zh) | 2015-03-11 |
JP2012065742A (ja) | 2012-04-05 |
EP2620167A1 (en) | 2013-07-31 |
US20160361465A1 (en) | 2016-12-15 |
US9441031B2 (en) | 2016-09-13 |
CN103124567A (zh) | 2013-05-29 |
US20130190480A1 (en) | 2013-07-25 |
EP2620167A4 (en) | 2014-05-28 |
EA201300381A1 (ru) | 2013-08-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Bradt et al. | Biomimetic mineralization of collagen by combined fibril assembly and calcium phosphate formation | |
Cui et al. | Self-assembly of mineralized collagen composites | |
JP4408603B2 (ja) | 有機無機複合生体材料およびその製造方法 | |
Oliveira et al. | Nature-inspired calcium phosphate coatings: present status and novel advances in the science of mimicry | |
US20160361465A1 (en) | Oriented collagen/apatite material and method for producing oriented collagen/apatite material | |
Kweon et al. | Development of nano-hydroxyapatite graft with silk fibroin scaffold as a new bone substitute | |
Ma et al. | Biomimetic self-assembly of apatite hybrid materials: from a single molecular template to bi-/multi-molecular templates | |
Xu et al. | A biomimetic strategy to form calcium phosphate crystals on type I collagen substrate | |
Nagano et al. | Regeneration of the femoral epicondyle on calcium-binding silk scaffolds developed using transgenic silk fibroin produced by transgenic silkworm | |
Green | Tissue bionics: examples in biomimetic tissue engineering | |
Bozo et al. | 3D printed gene-activated octacalcium phosphate implants for large bone defects engineering | |
KR101053118B1 (ko) | 골 재생용 실크/하이드록시아파타이트 복합 나노섬유 지지체의 제조방법 | |
Ye et al. | Rapid biomimetic mineralization of collagen fibrils and combining with human umbilical cord mesenchymal stem cells for bone defects healing | |
Miura et al. | Characterization and bioactivity of nano-submicro octacalcium phosphate/gelatin composite | |
WO2013157638A1 (ja) | HAp/Col複合体によって被覆された生体材料 | |
Ben-Nissan et al. | Marine derived biomaterials for bone regeneration and tissue engineering: Learning from nature | |
Junka et al. | Albumin-coated polycaprolactone (PCL)–decellularized extracellular matrix (dECM) scaffold for bone regeneration | |
JP4226830B2 (ja) | 複合生体材料の生分解性制御 | |
JP2003154001A (ja) | セリシン含有複合体およびその製造方法 | |
Jiayao et al. | Antheraea pernyi silk sericin mediating biomimetic nucleation and growth of hydroxylapatite crystals promoting bone matrix formation | |
Pal et al. | Cooperative calcium phosphate deposition on collagen-inspired short peptide nanofibers for application in bone tissue engineering | |
Vokhidova et al. | Synthesis and application of chitosan hydroxyapatite: A Review | |
Ito et al. | Bone regeneration with a collagen model polypeptides/α-tricalcium phosphate sponge in a canine tibia defect model | |
Shi et al. | Bone regeneration strategy inspired by the study of calcification behavior in deer antler | |
KR100362699B1 (ko) | 칼슘 포스페이트 초박막 코팅된 우골 분말 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201180045330.7 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11826563 Country of ref document: EP Kind code of ref document: A1 |
|
REEP | Request for entry into the european phase |
Ref document number: 2011826563 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2011826563 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13825787 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 201300381 Country of ref document: EA |