摘要丝胶蛋白是构成蚕丝的两种主要蛋白(丝胶和丝素)之一,具有良好的生物活性和低免疫原性,已成为组织工程领域备受青睐的新兴生物材料。2014年我们采用未降解性丝胶在国际上首次通过交联的方式制备了具有优良特性的三维纯丝胶蛋白水凝胶,但在机械强度、荧光特性等方面仍需进一步改善,另一方面,丝胶蛋白在组织工程材料的研究中处于起步阶段,尚未有多重交联丝胶蛋白材料的研究报道,因此,多重交联丝胶蛋白的研究十分必要。86855
本课题拟同时采用戊二醛(与氨基发生交联反应)和过氧化氢/辣根过氧化物酶(与酚羟基发生交联反应)作为交联剂交联丝胶制备丝胶蛋白水凝胶。并对丝胶蛋白水凝胶的理化性质进行系统地表征,结果表明,多重交联的丝胶蛋白水凝胶较之单交联水凝胶具有以下特点:1)多重交联水凝胶较之单交联水凝胶在绿色荧光和红色荧光的荧光强度显著增强 ;2)水凝胶的孔隙率有所下降,但仍保持较高的孔隙率,亦十分适合细胞组织培养。
毕业论文关键词 :丝胶蛋白;戊二醛;过氧化氢;多重交联;荧光
Abstract Sericin is one of two kinds of major protein(sericin and fibroin)which is composed of silk。For its good biological activity and low immune original, sericin has become a favored new biological materia in the field of tissue engineering。In 2014 we use the undegraded sericin to prepare the three-dimensional pure sericin hydrogel which has excellent characteristics by means of cross linking in the first time of the world。 However, the mechanical strength and fluorescence characteristics still need to be improved。On the other hand, sericin protein is still at the initial stage in the study of tissue engineering material and there never have been any studies which have reported multiple crosslinking sericin materials。So,it is necessary to do the research of multiple cross-linked sericin protein。
This topic intended to use glutaraldehyde which had crosslinking reaction with amino group and hydrogen peroxide which had crosslinking reaction with phenolic hydroxyl group as The crosslinking of sericin to prepare the sericin hydrogel 。The physicochemical properties of sericin hydrogel were systematically characterized
Key words: sericin protein; glutaraldehyde; hydrogen peroxide; crosslink; fluorescence
目 录
第一章 综 述 1
1。1 组织工程 1
1。1。1 组织工程简介 1
1。1。2 组织工程基本原理 1
1。2 生物支架 1
1。2。1 生物支架的性质 1
1。2。2 生物支架的应用现状 1
1。3 丝胶蛋白 2
1。3。1 丝胶蛋白的研究现状 2
1。3。2 丝胶蛋白的结构与特性 2
1。3。3 丝胶蛋白的分离 4
1。3。4 丝胶蛋白的生物活性 5
1。3。5 丝胶蛋白的应用 5
1。4 水凝胶 7
1。4。1 水凝胶的分类 7
1。4。2 水凝胶的性质 8
1。4。3 水凝胶的制备方法 8
1。4。4 水凝胶的应用 9
第二章 实验内容