Abstract:
PURPOSE: A method for manufacturing a biodegradable polymer material is provided to reduce molecular weight and to enhance strength of the biodegradable polymer material. CONSTITUTION: A method for manufacturing a biodegradable polymer material comprises: a step of preparing a polylactide stereocomplex using polymers; a step of molding the stereocomplex by pressing; a step of cooling the molded stereocomplex; a step of extruding the stereocomplex. The polymer has a type D polymer or a type L polymer. A monomer forming the polymer includes cyclic ester monomer with chiral carbon.
Abstract:
본 발명은 줄기세포에 대한 접착활성을 갖는 섬유아세포 성장인자(fibroblast growth factor, FGF)의 재조합 단백질 및 이를 이용한 줄기세포의 배양방법에 관한 것으로서, 구체적으로 섬유아세포 성장인자의 아미노 말단에 폴리펩티드 링커가 융합되어 줄기세포에 대한 접착활성을 갖는 재조합 단백질, 및 상기 재조합 단백질을 폴리펩티드 링커의 아미노 말단을 이용하여 소수성 표면을 갖는 배양용기에 고정시킨 후, 상기 재조합 단백질이 고정된 배양용기에 줄기세포를 접착시켜 배양하는 것을 포함하는, 고정된 섬유아세포 성장인자(immobilized FGF)를 이용한 줄기세포의 배양방법에 관한 것이다. 본 발명에 따르면, FGF의 아미노 말단을 폴리펩티드 링커에 결합시키고 상기 폴리펩티드 링커의 아미노 말단을 자발적인 물리적 흡착에 의해 소수성 표면을 갖는 배양용기에 고정시킴으로써, FGF-폴리펩티드 링커의 재조합 단백질이 고정된 표면은 FGF의 생물학적 활성은 그대로 유지하면서, 외부로 노출된 FGF가 줄기세포와의 상호작용에 의한 세포접착을 유도하여 줄기세포를 효과적으로 배양할 수 있다. 따라서 본 발명은 줄기세포의 분화 및 증식 연구와, 조직공학 및 세포치료와 같은 재생의료 분야에 매우 유용하게 적용될 수 있다. 말토오스 결합 단백질(MBP), 섬유아세포 성장인자(FGF), 생물활성 표면, 세포접착, 줄기세포
Abstract:
PURPOSE: A method for differentiation of stem cells into vascular cells by culturing in a three-dimensional cell cluster is provided to form hypoxic state and to efficiently induce the differentiation. CONSTITUTION: A composition for cell therapy for treating vascular diseases or wound contains a cell cluster containing vascular cells differentiated from the stem cell and culture liquid thereof as an active ingredient. The vascular diseases are cardiovascular diseases, cerebrovascular diseases, or ischemic diseases. The stem cells are adipose stem cells, mesenchymal stem cells, bone marrow stem cells, umbilical stem cells, nervous stem cells, or pluripotent stem cells. A three-dimensional cell cluster is formed in a hypoxia condition therein.
Abstract:
PURPOSE: A method for differentiating adipose stem cells to adipocytes using heparin-binding domain(HBD) is provided to induce cell adhesion and to effectively obtain a large amount of adipocytes. CONSTITUTION: A culture container is fixed on a heparin-binding domain(HBD) with an adhesion activity of adipose stem cells. The HBD is fixed in a recombinant protein form with a polypeptide linker by physical absorption. The polypeptide linker is maltose-binding protein(MBP), hydrophobin, or hydrophobic cell penetrating peptides(CPPs). The recombinant protein has an amino acid sequence of sequence number 2.
Abstract:
PURPOSE: A cell colony-hydrogel-polymer supporting complex for a cartilage regeneration, and a cartilage regeneration composition containing thereof are provided to induce the regeneration of a cartilage while maintaining a constant form similar to a natural cartilage. CONSTITUTION: A cell colony-hydrogel-polymer supporting complex for a cartilage regeneration includes a cell colony uniformly dispersed inside a hydrogel matrix. The cell colony-hydrogel complex is dipped in the surface of a polymer supporting body and inserted into a pore to fill the pore. A producing method of the cell colony-hydrogel-polymer supporting complex comprises the following steps: forming the cell colony out of a cell capable of differentiating into a cartilage cell; forming the cell colony-hydrogel complex; and inserting the cell colony-hydrogel complex into a pore after inoculating the colony on the polymer supporting body.
Abstract:
A method for producing alumina powder is provided to obtain multi-phase alumina powder or alpha-alumina composite powder having a fine particle size and causing little agglomeration, to improve the time- and cost-efficiency, and to obtain a material useful as a catalytic material, biochemical material, sensor or laser material. A method for producing alumina powder with low agglomeration comprises a step of treating ammonium aluminum carbonate in a microwave furnace by way of thermal decomposition and phase transition to provide alumina or alumina composite powder. The ammonium aluminum carbonate is prepared by mixing an aqueous solution containing an aluminum salt with an aqueous solution of ammonium hydrogen carbonate. The treatment in a microwave furnace is carried out under an atmosphere of air, nitrogen, argon, hydrogen or a combination thereof at 300-1200 deg.C for at least 5 minutes.
Abstract:
Provided is a porous osteochondral composite scaffold with layer structure which has features of bioactivation and mechanical strength suitable to regenerate cartilage and bone simultaneously and method for manufacturing the same. The porous osteochondral composite scaffold comprises: a porous bone regeneration layer which includes biocompatable high molecule and bioactivation ceramic; a porous cartilage regeneration layer which includes biocompatable elastic high molocule. The method for manufacturing a porous osteochondral composite scaffold comprises the steps of: mixing biocompatable high molecule, bioactivation ceramic and lacuna-forming material; press-forming the mixed material from the first step in a mold; bonding the obtained material from the second step by heating to form a porous bone regeneration layer; forming composite material by press-forming gelled mixed material for forming cartilage which dissolves in solution with biocompatable high molecule and lacuna-forming material on one surface of the regenerated layer from the third step; removing solution and lacuna-forming material in the composite material from the fourth step.
Abstract translation:本发明涉及用于预防或治疗关节炎的药物组合物,用于预防或治疗关节炎的注射剂,以及用于诱导软骨细胞分化的药物组合物,其中用于预防或治疗关节炎的药物组合物包含合成多肽。 包含由SEQ ID NO:1表示的多肽和由SEQ ID NO:表示的多肽的合成多肽具有将干细胞移动至关节炎区域的活性,控制软骨细胞的凋亡,并显示抗炎活性和 软骨细胞繁殖促进活动。 因此,与常规的关节炎治疗剂相比,合成多肽不仅可以减轻软骨细胞的损伤,而且可以控制回归变化,同时显示出作为干细胞治疗剂的效果。 因此,合成多肽可用作预防或治疗关节炎的药剂。
Abstract:
실시간으로 인공혈관의 내압을 측정할 수 있는 인공혈관용 체외 바이오 리액터를 제공한다. 인공혈관용 체외 바이오 리액터는 i) 기판, ii) 기판 위에 위치하고, 일방향을 따라 뻗어서 유체가 그 내부를 따라 흐르도록 적용된 인공혈관의 양단을 고정하는 한 쌍의 커넥터들, iii) 한 쌍의 커넥터들이 각각 부착되고, 유체의 압력을 측정하도록 적용되며, 기판 위에 위치한 제1 압력계 및 제2 압력계, iv) 제1 압력계와 연결되어 제1 압력계를 통과한 유체의 유량을 측정하도록 적용되며, 기판 위에 위치한 유속계, v) 제2 압력계와 연결되어 제2 압력계에 유체를 이송하도록 적용되고, 기판 위에 위치한 원심펌프, vi) 원심펌프와 연결되어 원심펌프에 유체를 공급하고, 유속계를 통과한 유체가 회수되며, 유체를 저장하도록 적용되며, 기판 위에 위치한 저장조, vii) 기판 위에 위치하고, 일방향을 따라 인공혈관과 이웃하여 이동하면서 인공혈관의 두께를 측정하도록 적용된 마이크로미터, 및 viii) 기판 위에 위치하고, 제1 압력계, 제2 압력계, 유속계, 및 마이크로미터로부터 각각 계측 신호를 전송받아 계측 신호에 대응하는 계측량을 표시하도록 적용된 표시기를 포함한다.