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RGD-FasL羟乙基壳聚糖缓释纳米粒制备及生物学研究
Authors
刘彬
庄国洪
+5 more
张敏萍
张晶
杨晶晶
罗芳洪
黄小平
Publication date
20 December 2012
Publisher
Abstract
目的使用羟乙基壳聚糖制备纳米颗粒(NPs),用来包载RGD-FasL融合蛋白(RF),鉴定其功能并评估其在肝癌治疗中的作用。方法采用离子凝胶法制备RF羟乙基壳聚糖缓释纳米粒(RF-NPs);通过透射电镜、动态光散射法考察其理化性质;用紫外分光光度仪检测蛋白浓度来计算其载药率、包封率和体外释放度;通过MTT比色法检测对H22细胞增殖活性的影响,应用H22细胞建立小鼠肝癌模型进行体内抑瘤研究。结果制备的RF-NPs呈球形或类球形,平均粒径198.3 nm,Zeta电位+25 mV,包封率较高,且具有缓释效果,150 mg/L浓度时对H22细胞抑制率大于70%,并能在小鼠体内产生比较明显的抑瘤效果。结论离子凝胶法制备RF-NPs的条件缓和、方法简单,是癌症治疗中具有很好的前景的蛋白药物载体
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Last time updated on 16/06/2016