WO2013105696A1 - 체외 혈관성 조직 제작방법 - Google Patents
체외 혈관성 조직 제작방법 Download PDFInfo
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- WO2013105696A1 WO2013105696A1 PCT/KR2012/001668 KR2012001668W WO2013105696A1 WO 2013105696 A1 WO2013105696 A1 WO 2013105696A1 KR 2012001668 W KR2012001668 W KR 2012001668W WO 2013105696 A1 WO2013105696 A1 WO 2013105696A1
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- C—CHEMISTRY; METALLURGY
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- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
- C12N5/0062—General methods for three-dimensional culture
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- C—CHEMISTRY; METALLURGY
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- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N11/00—Carrier-bound or immobilised enzymes; Carrier-bound or immobilised microbial cells; Preparation thereof
- C12N11/02—Enzymes or microbial cells immobilised on or in an organic carrier
- C12N11/04—Enzymes or microbial cells immobilised on or in an organic carrier entrapped within the carrier, e.g. gel or hollow fibres
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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
- A61L27/18—Macromolecular materials obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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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
- A61L27/24—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
- A61L27/36—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
- A61L27/3808—Endothelial cells
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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
- A61L27/52—Hydrogels or hydrocolloids
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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
- A61L27/54—Biologically active materials, e.g. therapeutic substances
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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
- C12N5/06—Animal cells or tissues; Human cells or tissues
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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
- C12N5/06—Animal cells or tissues; Human cells or tissues
- C12N5/0602—Vertebrate cells
- C12N5/069—Vascular Endothelial cells
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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
- C12N5/06—Animal cells or tissues; Human cells or tissues
- C12N5/0602—Vertebrate cells
- C12N5/069—Vascular Endothelial cells
- C12N5/0691—Vascular smooth muscle cells; 3D culture thereof, e.g. models of blood vessels
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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
- C12N5/06—Animal cells or tissues; Human cells or tissues
- C12N5/0602—Vertebrate cells
- C12N5/0693—Tumour cells; Cancer cells
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/5005—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells
- G01N33/5008—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells for testing or evaluating the effect of chemical or biological compounds, e.g. drugs, cosmetics
- G01N33/5011—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells for testing or evaluating the effect of chemical or biological compounds, e.g. drugs, cosmetics for testing antineoplastic activity
Definitions
- the present invention relates to a method for producing vascular tissues in vitro, and more particularly, to induce angiogenesis using vascular cells in vitro to induce angiogenesis by using vascular cells to study diseases of vascular tissues in vitro and develop a treatment method.
- the present invention relates to an extracorporeal vascular tissue manufacturing method capable of obtaining a tissue.
- Angiogenesis refers to the process by which new blood vessels are formed from existing blood vessels, and include tumor growth and metastasis, diabetic retinopathy, psoriasis, chronic inflammation, and ulcers. and various diseases such as ulcers (Carmeliet et al., Nature, 407, p249, 2000).
- neovascularization such as cancer occurs, just suppressing such neovascularization can effectively inhibit tumor growth and metastasis.
- VEGF vascular endothelial growth factor
- VEGFR vascular endothelial growth factor receptor
- bFGF basic fibroblast growth factor
- TGF- ⁇ , - ⁇ Conversion growth factor alpha and beta
- EGF epidermal growth factor
- PDGF platelet-derived growth factor
- anticancer drugs When such anticancer drugs are administered to patients, the types and amounts of effective anticancer drugs differ from patient to patient, which makes it difficult to rely on doctor's experience or data known to academia.
- the anticancer agent destroys not only cancer cells but also normal cells, it is impossible to test various types or dosages of the anticancer drugs because the patient is limited to the fourth dose at most.
- the anticancer agent should be tested directly on the cancer cells of the patient, but at present, there is no method to solve this problem.
- Cancer treatment by radiation utilizes the characteristics of normal cells that recover faster than cancer cells by irradiating normal tissues and cancer cells.
- Radiation for treatment uses X-rays, gamma rays, electron beams, neutron beams, and proton beams of 1 million volts or more. In this case, the amount of radiation of the type of radiation to be irradiated varies according to the patient or the part of the body to which the radiation is irradiated.
- the location of cancer cells can be determined by CT or MRI, but the exact amount of radiation depends on experience. Therefore, a situation in which cancer cells cannot be destroyed due to a lack of radiation or a normal dose due to an excessive dose of radiation can cause fatal damage to a patient.
- An object of the present invention devised to solve the above-mentioned problems, in vitro vascular tissue by inducing neovascularization using vascular cells of the tissue in vitro so that it can be used to study diseases of vascular tissues in vitro and develop treatment methods To provide an extracorporeal vascular tissue manufacturing method can be obtained.
- the present invention for achieving the above object, the step of supplying a hydrogel mixed vascular tissue cells to the tissue preparation container; Immersing the collecting tip to which the vascular cells are attached to the hydrogel; Curing the hydrogel; And it is an extracorporeal vascular tissue manufacturing method comprising the step of supplying a cell culture solution to the upper side of the hydrogel.
- the vascular cells are characterized in that the collection tip is immersed in the cell culture medium mixed with blood vessel cells in the container for vascular cells and attached to the collection tip of the cell collecting member. Therefore, since a large amount of blood vessel cells can be prepared in advance, the time required for the production of extracorporeal vascular tissue can be shortened.
- the container for vascular cells preferably has a slope so that the vascular cells are collected around the collection tip, it is more preferable that the collection groove is formed in the center of the slope is inserted into the collection tip.
- the collecting tip is made of a porous material, characterized in that the collagen coating on the outer surface.
- vascular tissue cells characterized in that any one or more selected from cancer cells, brain cells, hepatocytes.
- the hydrogel has a cell binding domain and is characterized by biodegradability at the same time. Through this, it is possible to provide the vascular tissue with an environment similar to the body of the human body.
- the hydrogel may be a natural hydrogel or a synthetic hydrogel.
- the weight ratio of the vascular cells and the vascular tissue cells is characterized in that 1 to 10. That is, by allowing the vascular tissue cells to have a greater amount than the vascular cells, it is easy to grasp the generation of blood vessels by the vascular endothelial growth factor (VEGF) provided from the vascular tissue cells.
- VEGF vascular endothelial growth factor
- cancer cells, hepatocytes, nerve cells and the like to generate neovascularization using vascular cells in vitro to produce cancer tissues, liver tissues, brain tissues and the like in large quantities simultaneously in vitro Can be.
- extracorporeal vascular tissues obtained through the present invention can be used to study diseases related to vascular tissues in vitro and develop treatments, and to find a treatment suitable for a patient in a short time.
- the present invention can be applied to determine the type and amount of radiation suitable for removing cancer cells by producing a large amount of cancer tissues in vitro.
- the present invention can reduce the side effects due to the misuse of radiation can significantly improve the cancer treatment rate.
- FIG. 1 is a process chart of vascular cell adhesion work in the extracorporeal vascular tissue manufacturing method according to the present invention.
- Figure 2 is a process chart for curing by culturing the blood cells prepared in Figure 1 of the extracorporeal vascular tissue preparation method according to the invention in a hydrogel with the vascular tissue cells.
- Figure 3 is a view of the drug experiment using the extracorporeal vascular tissue produced by the extracorporeal vascular tissue manufacturing method according to the present invention.
- FIG. 4 is a perspective view of a cell collecting member.
- vascular cells 32 are collected using this property.
- the cell culture solution 30 and the vascular cells 32 are mixed and supplied to the container 10 for vascular cells. That is, the cell culture solution 30 may be injected into the vascular cells 32, or the blood vessel cells 32 may be supplied to the cell culture solution 30 and mixed. Then, the cell collecting member 20 is mounted in the container 10 for blood vessel cells.
- a known cell culture solution may be used. For example, DMEM (Dulbecco's Modified Eagle's Medium) or ⁇ -MEM ( ⁇ -Minimum Essential Medium) may be used.
- the vascular cell container 10 has a shape in which the vascular cells 32 easily gather around the collecting tip 22 of the cell collecting member 20. That is, the bottom portion of the container 10 for blood vessel cells has an inclined portion 14 formed to have a low center. Therefore, it is collected at the center of the inclined portion 14 through the slope of the inclined portion 14.
- a collection groove 12 is formed at the center of the inclined portion 14 to facilitate the contact of the blood vessel cells 32 to the collection tip 22.
- the collection groove 12 may be inserted into the collection tip 22, the gap is formed around the vascular cell 32 is introduced into the gap. Therefore, in the state similar to the figure of the left side of FIG. 1, it will be in the state like the center figure.
- the collection tip 22 may be made of a porous material, or may be coated with collagen.
- the cell collecting member 20 thus obtained may be left in the container 10 for vascular cells or may be left in a state in which the cell culture solution is excluded in a separate container 40.
- extracorporeal vascular tissue may be manufactured using the cell collecting member 20 to which the vascular cells 32 are attached.
- the hydrogel 60 and the vascular tissue cells 62 are supplied to the tissue preparation container 50.
- the hydrogel 60 and the vascular tissue cells 12 are well mixed as shown in the left side of FIG.
- the tissue forming container 50 may be made of glass or plastic of a transparent material to observe the inside, there is no limitation on the shape.
- the collection tip 22 is immersed in the hydrogel 60.
- the collecting tip 22 may be immersed in the hydrogel 60 in a state coupled to the cell collecting member 20, as shown in FIG. 2, and spaced apart from the cell collecting member 20. Only 22 may be dipped into the hydrogel 60.
- the weight ratio of the vascular cells 18 and the vascular tissue cells 12 is to be 1 ⁇ 10. That is, by allowing the vascular tissue cells to have a greater amount than the vascular cells, it is easy to grasp the generation of blood vessels by the vascular endothelial growth factor (VEGF) provided from the vascular tissue cells.
- VEGF vascular endothelial growth factor
- the vascular cells 32 of the collection tip 22 is located in close proximity to the vascular tissue cells 62 in the hydrogel (60).
- the vascular tissue cells 62 may be selected from cancer cells, brain cells, and hepatocytes.
- the vascular tissue cells 62 may be taken from a patient. For example, when using cancer cells, approximately 20,000 to 40,000 cells may be supplied. do.
- the vascular tissue cells can be cultured in a separate cell culture fluid, it is also possible to supply to the tissue preparation container 50 after removing the cell culture fluid.
- a known cell culture solution may be used.
- DMEM Dense-Coulfate's Medium
- ⁇ -MEM ⁇ -Minimum Essential Medium
- the hydrogel 60 has a cell binding domain and is required to be biodegradable at the same time. Therefore, the hydrogel 60 may be a natural hydrogel or a synthetic hydrogel. Collagen may be used as the natural hydrogel, and commercially available cugel (QGel TM, QGel SA, Switzerland) may be used as the synthetic hydrogel.
- QGel TM, QGel SA, Switzerland commercially available cugel
- an environment having the same moisture content as in the body may be provided to the vascular tissue cells 62 and the blood cells 32.
- Curing of the hydrogel 60 may be performed by leaving the tissue preparation container 50 in a condition of about 35 to 40 ° C. and 3 to 10 wt% of carbon dioxide for 20 to 40 minutes.
- the cell culture liquid 64 is injected above.
- a known cell culture solution may be used.
- DMEM Dense-Coulfate's Medium
- ⁇ -MEM ⁇ -Minimum Essential Medium
- neovascularization 66 is formed from the vascular cells 32 toward the vascular tissue cells 62 through the signaling material for neovascularization generated from the vascular breakfast cells 62, and the vascular cells ( 18) and the vascular tissue cells 12 can be obtained in vitro to connect the vascular tissue by the neovascularization 20.
- the formation of the neovascularization 66 is formed as shown in Figure 2, gathered around the collection tip 22.
- the appearance of the neovascularization 66 can be seen clearly, it is easy to observe the destruction of the neovascularization 66 during the chemical test.
- vascular tissue In order to perform various tests such as drug tests on the obtained vascular tissue, a plurality of vascular tissues are simultaneously manufactured on the test panel 70 as shown in FIG. 3. That is, the tissue preparation container 50 is mounted on the test panel 70, and vascular tissue is formed in each tissue preparation container 50 through the above-described process. Thus, a large amount of vascular tissue can be produced in vitro.
- vascular cell 40 container for mounting
- tissue forming container 60 hydrogel
- vascular tissue cell 66 neovascularization
- test panel 80 chemical injection
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Abstract
Description
Claims (9)
- 조직제작용 컨테이너에 혈관성 조직세포가 혼합된 하이드로젤을 공급하는 단계;혈관세포가 부착된 수집팁을 상기 하이드로젤에 침지되는 단계;상기 수집팁이 침지된 상태로 상기 하이드로젤을 경화시키는 단계; 및상기 하이드로젤의 상측으로 세포배양액을 공급하는 단계를 포함하는 체외 혈관성 조직 제작방법.
- 제1항에 있어서, 상기 혈관세포는, 혈관세포용 컨테이너에 혈관세포가 혼합된 세포배양액 내에 상기 수집팁을 침지시켜 상기 세포수집부재의 수집팁에 부착되는 것을 특징으로 하는 체외 혈관성 조직 제작방법.
- 제2항에 있어서, 상기 혈관세포용 컨테이너는 혈관세포가 상기 수집팁의 주위로 모이도록 경사부를 가지는 것을 특징으로 하는 체외 혈관성 조직 제작방법.
- 제3항에 있어서, 상기 경사부의 중심에는 상기 수집팁이 삽입되는 수집홈이 형성되는 것을 특징으로 하는 체외 혈관성 조직 제작방법.
- 제1항에 있어서, 상기 수집팁은 다공성 재질로 이루어지거나, 외면에 콜라겐 코팅이 되는 것을 특징으로 하는 체외 혈관성 조직 제작방법.
- 제1항에 있어서, 상기 혈관성 조직세포는, 암세포, 뇌세포, 간세포 중에서 선택된 어느 하나 이상인 것을 특징으로 하는 체외 혈관성 조직 제작방법.
- 제1항에 있어서, 상기 하이드로젤은 세포결합역(cell binding domain)을 가지고, 동시에 생분해성인 것을 특징으로 하는 체외 혈관성 조직 제작방법.
- 제1항에 있어서, 상기 혈관세포와 상기 혈관성 조직세포의 중량비율은 1~10인 것을 특징으로 하는 체외 혈관성 조직 제작방법.
- 제1항에 있어서, 상기 하이드로젤은 천연하이드로젤 또는 합성하이드로젤인 것을 특징으로 하는 체외 혈관성 조직 제작방법.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/128,092 US20140315309A1 (en) | 2012-01-11 | 2012-03-07 | Method for manufacturing in vitro vascularized tissue |
EP12865084.3A EP2738249B1 (en) | 2012-01-11 | 2012-03-07 | Method for manufacturing in vitro vascularized tissue |
BR112013031769A BR112013031769A2 (pt) | 2012-01-11 | 2012-03-07 | método para produçãi de tecidos vascularizados in vitro |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR1020120003567A KR101365920B1 (ko) | 2012-01-11 | 2012-01-11 | 체외 혈관성 조직 제작방법 |
KR10-2012-0003567 | 2012-01-11 |
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Publication Number | Publication Date |
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WO2013105696A1 true WO2013105696A1 (ko) | 2013-07-18 |
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PCT/KR2012/001668 WO2013105696A1 (ko) | 2012-01-11 | 2012-03-07 | 체외 혈관성 조직 제작방법 |
Country Status (5)
Country | Link |
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US (1) | US20140315309A1 (ko) |
EP (1) | EP2738249B1 (ko) |
KR (1) | KR101365920B1 (ko) |
BR (1) | BR112013031769A2 (ko) |
WO (1) | WO2013105696A1 (ko) |
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JP7493945B2 (ja) | 2020-01-28 | 2024-06-03 | ポーラ化成工業株式会社 | 培養組織の観察方法、培養方法、評価方法及び培養器具 |
Citations (1)
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KR100921487B1 (ko) * | 2007-07-11 | 2009-10-13 | 고려대학교 산학협력단 | 3차원 패터닝을 이용한 조직재생용 하이드로젤 제조방법 |
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TW200817019A (en) * | 2006-07-10 | 2008-04-16 | Univ Columbia | De novo formation and regeneration of vascularized tissue from tissue progenitor cells and vascular progenitor cells |
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2012
- 2012-01-11 KR KR1020120003567A patent/KR101365920B1/ko active IP Right Grant
- 2012-03-07 BR BR112013031769A patent/BR112013031769A2/pt not_active Application Discontinuation
- 2012-03-07 WO PCT/KR2012/001668 patent/WO2013105696A1/ko active Application Filing
- 2012-03-07 US US14/128,092 patent/US20140315309A1/en not_active Abandoned
- 2012-03-07 EP EP12865084.3A patent/EP2738249B1/en not_active Not-in-force
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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KR100921487B1 (ko) * | 2007-07-11 | 2009-10-13 | 고려대학교 산학협력단 | 3차원 패터닝을 이용한 조직재생용 하이드로젤 제조방법 |
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CARMELIET ET AL., NATURE, vol. 407, 2000, pages 249 |
FOLKMAN ET AL., N. ENGL. J. MED., vol. 285, 1971, pages 1182 |
MOON ET AL.: "Biomimetic hydrogels with pro-angiogenic properties", BIOMATERIALS, vol. 31, 24 February 2010 (2010-02-24), pages 3840 - 3847, XP026947557 * |
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TSANG ET AL.: "Three-dimensional tissue fabrication", ADVANCED DRUG DELIVERY REVIEWS, vol. 56, 19 July 2004 (2004-07-19), pages 1635 - 1647, XP004550361 * |
Also Published As
Publication number | Publication date |
---|---|
EP2738249A4 (en) | 2014-09-10 |
BR112013031769A2 (pt) | 2016-12-06 |
US20140315309A1 (en) | 2014-10-23 |
KR20130082379A (ko) | 2013-07-19 |
EP2738249A1 (en) | 2014-06-04 |
KR101365920B1 (ko) | 2014-02-20 |
EP2738249B1 (en) | 2017-04-26 |
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