摘要
用PEG化磷脂膜修饰蛋白质芯片的二氧化硅表面,通过调节PEG的含量,考察磷脂膜对蛋白非特异性吸附的抑制,以及对蛋白分子固定的影响。结果表明,经过PEG化磷脂膜修饰的二氧化硅表面,可以显著抑制蛋白的非特异性吸附,并通过功能化的PEG分子有效固定配基及其抗体。
Application of PEGylated phospholipid membrane in surface modification of oxidized silicon is studied here. Silicon dioxide surfaces are covered by phospholipid membrane with variable molar fractions of DSPE-PEG2000-COOH, and obvious resistance to non-specific protein adsorption on PE- Gylated phospholipid membrane is obtained. Also, ligand and its corresponding antibody can be effectively assembled on functionalized PEGylated phospbolipid membrane.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2008年第10期208-210,共3页
Journal of Materials Engineering
基金
国家自然科学基金项目(20845003)
中国科学院重要方向性项目(KJCX2.YW.M02andM04)
中国博士后科学基金资助项目
关键词
磷脂膜
表面修饰
椭偏光学成像技术
phospholipid membrane
surface modification
imaging ellipsometry