Abstract:
The present invention relates to a production method of hydrogel which comprises the following steps producing an enzyme-immobilized supporter; contacting a polymer with a phenol or aniline functional group on a side chain and the enzyme-immobilized supporter under the presence of hydrogen peroxide for crosslinking; and obtaining the hydrogel by separating the enzyme-immobilized supporter. According to the present invention, the polymer with the phenol or aniline functional group on the side chain is crosslinked by the enzyme immobilized on the supporter to form the hydrogel, thereby obtaining the hydrogel without enzymes. Therefore, in vivo stability including an immune reaction by enzymes can be overcome, and the biomedical application range of the hydrogel can be expanded. [Reference numerals] (AA) Oxidizing enzyme-immobilized supporter; (BB,GG) In situ formation hydrogel; (CC) Injection needle; (DD) Enzyme-immobilized supporter; (EE) Polymer solution sterilizing filter; (FF) Polymer solution(in H_2O_2)
Abstract:
PURPOSE: A surface immobilization method of a bioactive substance is provided to stably fix a bioactive substance including phenol or catechol molecules on the surface of metal or high molecule material. CONSTITUTION: A surface immobilization method of a bioactive substance is as follows. A bioactive substance including phenol or catechol molecules is prepared. The bioactive substance is combined with the surface of a substrate by processing bioactive substance and polyphenol oxidase on the surface of the substrate. The bioactive substance is cell adhesion peptide including tyrosine.
Abstract:
본 발명은 생체 주입형 조직 접착성 하이드로젤 및 이의 생의학적 용도에 관한 것으로, 보다 상세하게는 도파 또는 이의 유도체를 포함하는 생체 주입형 조직 접착성 하이드로젤에 관한 것으로, 상기 생체 주입형 조직 접착성 하이드로젤은 종래 조직 접착성 하이드로젤과 달리 체내에서 일어나는 효소 반응에 의한 in situ 가교 형성을 유도하여 하이드로젤을 형성함으로써 보다 생체적합성이 우수한 in situ 형성 조직 접착성 하이드로젤을 제공하며 동시에 합성 고분자와 천연 고분자의 하이브리드화로 인하여 생체적합성 및 기계적 강도가 우수하고 도파 유도체의 결합을 통해 우수한 조직 접착력을 갖는다. 이러한 하이드로젤은 조직접착 및 지혈용 소재, 조직재생 및 충진용 임플란트 소재, 생리활성 물질 또는 약물 전달체용 담체 등을 포함한 다양한 생의학적 용도로 사용될 수 있다. In situ 형성 하이드로겔, 조직 접착제, 지혈제, 효소 감응성 하이드로젤, 도파민, 티라민, 하이드록시페닐아세트산, 하이드록시프로피온산
Abstract:
PURPOSE: An in situ implantation type tissue adhesion hydrogel and a biomedical use thereof are provided to improve bio compatibility and mechanical strength. CONSTITUTION: An in situ implantation type tissue adhesion hydrogel comprises: a star type polymer which is formed by combining one or more compounds selected from phenol, aniline or their derivative and one or more compounds selected from dopa or its derivative; a heterogeneous mixture of a branched polymer in which one or more compounds selected from phenol, aniline, or their derivative use a water soluble polymer as a linker; and two or more homogeneous or heterogeneous polymers selected from branched polymers.
Abstract:
PURPOSE: A patterned cell cultivation plate and a producing method of a cell sheet using thereof are provided to rapidly obtain the cell sheet without damaging by culturing cells by using thermo-sensitive hydrogel and cell adhesion peptide as a culture plate. CONSTITUTION: A patterned cell cultivation plate includes thermo-sensitive hydrogel and cell adhesion peptide. The patterned cell cultivation plate has patterns on one surface. The thermo-sensitive hydrogel is obtained by adding carrot peroxidase and hydrogen peroxide to a polymer mixture containing more than one kind of polymer, and dehydrogenation bonding phenol analogs.
Abstract:
PURPOSE: An internal implantation type hydrogel and biomedical use thereof is provided, which can be applied to implant material for tissue regeneration and filling. CONSTITUTION: An internal implantation type hydrogel comprises more than two polymers expressed as a chemical formula 1 of the same kind or different kind and combined with phenol derivative or aniline derivative. The internal implantation type hydrogel is connected by the dehydrogenation bonding between the aniline derivative or phenol derivative. In the chemical formula 1 or chemical formula 2, R is hydroxy or amine radical and L is water soluble polymer.