Surface Modification of Biomimetic PLGA-(ASP-PEG) Matrix with RGD-Containing Peptide: a New Non-Vira

来源 :武汉理工大学学报(材料科学版)英 | 被引量 : 0次 | 上传用户:dongfa
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
RGD-containing peptide (K16-GRGDSPC), characterized as non-viral gene vectors, was fabricated to modify the surface of PLGA-[ASP-PEG] matrix, which offered the foundation for gene transfer with porous matrix of gene activated later. Peptide was synthesized and matrix was executed into chips A,B and chip C. Chip C was regarded as control. Chips A and B were reacted with cross-linker. Then chip A was reacted with peptide. MS and HPLC were used to detect the MW and purity of peptide. Sulphur, existing on the surface of biomaterials, was detected by XPS. The purity of un-reacted peptide in residual solution was detected by a spectrophotometer. HPLC shows that the peptide purity was 94%-95%, and MS shows that the MW was 2 741.3307. XPS reveals that the binding energy of sulphur was 164 eV and the ratio of carbon to sulphur (C/S) was 99.746∶0.1014 in reacted chip A. The binding energy of sulphur in reacted chip B was 164 eV and 162 eV, C/S was 99.574∶0.4255, and there was no sulphur in chip C. Peptide was manufactured and linked to the surface of biomimetic and 3-D matrix, which offered the possibilities for gene transfer and tissue engineering with this new kind of non-viral gene vector.
其他文献
Simulations are performed on temporal evolution of atom morphology and ordering parameters of Ni-14.5Cr-16.5 Al alloy during early precipitation process at diff
Aimed at the modeling issues in design and quick processing of extruding die for special-shaped products, with the help of Conformal Mapping theory, Conformal M
作为武隆“国际山地户外运动公开赛”的运动基地之一,火炉镇在万峰林海打造了重庆首条百里山地自行车健康步道,让游客可以骑着自行车观赏万峰林海,感受森林休闲游。百里山地自行
In twin-roll strip casting process, metal flow and temperature distribution in the molten pool directly affect the stability of the process and the quality of p
食品安全频频触及底线,是社会道德底线失守、监管制度形同虚设的强烈信号。有关食品专家推算称,用全国每年食用油使用量减去每年国内食用油产量和进口量,两者差值可能就是地沟油
Electro-oxidation of Ce( Ⅲ) to Ce( Ⅳ ) in parallel plate flow type electrolyzer divided with cation exchange membrane was carried out in nitric acid media at
本文对目前我国的炼铁原料制备技术现状及其存在的缺点和不足进行了初步分析,找出了我们所应用的炼铁原料制备技术与国内其他单位所使用的炼铁原料制备技术的差距,进而提出了我
随着社会的发展进步,人们的心理健康不容乐观,关于现代人们“孤独”心理的探讨不断深入。本文从学生自身﹑学校因素﹑家庭因素﹑社会因素四个方面探讨了小学生“孤独”心理的成因、
办公自动化,是指以电子计算机为核心的各种现代办公技术与设备,它能迅速、准确地处理各种信息,提高办公效率,它为人类社会进入知识经济时代,改变传统的办公手段与方式,收集、
The electrical conductivity of cermet 83(90NiFe2O4-10NiO)-17Ni at different temperatures was measured in air, the operating performance of inert anode was evalu