【摘要】 目的:制备表皮生长因子(Epidermal growth factor,EGF)偶联牛血清白蛋白纳米载体,作为多种高表达表皮生长因子受体(Epidermalgrowthfactorreceptor,EGFR)的肿瘤细胞主动靶向给药的新途径。方法:采用二次超声乳化和溶剂挥发技术制备白蛋白纳米载体,通过化学交联试剂将EGF与白蛋白纳米载体偶联,制得EGF偶联白蛋白纳米载体并进行核素标记,通过葡聚糖凝胶柱及聚丙烯酰胺凝胶电泳(SDS-PAGE)验证偶联效果和EGF偶联的程度。结果:成功制备得到平均粒径为34nm的牛血清白蛋白纳米载体,而且EGF与白蛋白纳米载体偶联率较高,所得的EGF-BSA纳米载体室温稳定性和血清稳定性均较好。结论:成功制备得到体积较小的牛血清白蛋白纳米载体和EGF偶联牛血清白蛋白纳米载体,为进一步探讨其体外肿瘤细胞靶向性及体内分布规律奠定了实验基础。更多还原

【Abstract】 Objective:To prepare EGF-coupling bovine serum albumin nano-carrier as a new way for initiative targeted drug delivery of epidermal growth factor receptor(EGFR) with broad range of expression in tumor cell. Methods:albumin nano-carrier was prepared by second phacoemulsification and solvent evaporation technology,and epidermal growth factor(EGF) was conjugated with albumin nano-carrier by chemical crosslinking reagents for EGF coupling bovine serum albumin nano-carrier. Results:The prepared nano-carrier then underwent isotope labeling,then the coupling effect of EGF and its coupling level were certified by sephadex column and polyacrylamide gel electrophoresis(SDS-PAGE). Conclusion:Success in the preparation of the smaller bovine serum albumin nano-carrier and EGF coupling bovine serium albumin nano-carrier establish the experimental foundation for further exploration of its targeting of tumor cells in vitro and distribution in vivo.更多还原