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白蛋白纳米基因载体的制备与表征

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摘要 目的研制白蛋白纳米基因载体,评估白蛋白纳米粒用作基因载体的可行性。方法采用去溶剂化法制备白蛋白纳米粒,并通过控制转速、pH值、搅拌时间三个变量来考察白蛋白纳米粒的表征变化情况,以PicoGreen荧光法来测白蛋白纳米载体的基因转载率,并用流式细胞仪检测膀胱癌细胞的基因转染率。结果控制转速1000RPM,自然状态下的溶液pH值(6.9),持续搅拌12h条件下,制得满足基因载体需要的白蛋白纳米粒的平均粒径(253.1±11.9)nm,zeta电位(-34.0±4.5)mV,PDI0.43±0.04,性质相对稳定,基因转载率为(97.61±0.06)%,转染率为(48.21±5.94)%。结论单纯质粒很难进入细胞核高表达,借助白蛋白纳米载体,使高效的基因转染成为可能。白蛋白纳米粒有望被广泛应用为二次基因转载工具。
出处 《中国实用医药》 2011年第31期240-242,共3页 China Practical Medicine
基金 广东省科技计划资助项目(项目编号:2009B060700099)
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