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-  2017 

半胱胺修饰的FePt纳米颗粒对HeLa细胞的毒性 Cytotoxicity of Cysteamine Modified FePt Nanoparticles in HeLa Cells

Keywords: FePt-Cys纳米颗粒,HELF细胞,HeLa细胞,细胞毒性,细胞周期调制

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Abstract:

为探究半胱胺修饰的FePt纳米颗粒的抗肿瘤特性,本文采用化学还原法,制备出直径约3nm的FePt纳米颗粒,再用半胱胺(cysteamine,Cys)重新修饰其表面,将得到的FePt-Cys纳米颗粒分别与HELF(人胚肺成纤维细胞)和HeLa细胞(人宫颈癌细胞)孵育,用CCK-8法评估其细胞毒性,并通过流式细胞仪分析其对两种细胞周期分布的影响.结果发现,在一定浓度范围内,FePt-Cys纳米颗粒可以显著抑制HeLa细胞的增殖,但不影响HELF细胞的生长,其机制可能是通过细胞周期调节作用来产生细胞毒性.基于其对肿瘤细胞显著的杀伤作用和对正常细胞良好的生物相容性,FePt-Cys纳米颗粒将来可能作为一种有效的化疗药剂

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