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阿霉素诱导HK-2细胞损伤机制的研究 被引量:2

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摘要 目的探讨阿霉素诱导人肾近端小管上皮细胞(HK-2 cells)损伤作用机制。方法用刃天青试验法检测阿霉素0-100μmol/L暴露HK-2细胞24 h对细胞存活率的影响,并计算半数致死浓度(LC50);检测细胞培养上清中乳酸脱氢酶(LDH)含量以及细胞内Caspase-3/7蛋白活性的变化;用荧光显微镜观察细胞内磷脂质蓄积情况。结果阿霉素暴露HK-2细胞24 h,可明显抑制HK-2细胞存活,且具有浓度依赖性(LC50=2.01±0.16μmol/L);阿霉素可以引起HK-2细胞培养上清中LDH含量显著升高(P〈0.01),细胞内Caspase-3/7蛋白活性显著升高(P〈0.01),且细胞存活率与胞外LDH含量及胞内Caspase-3/7蛋白活性均呈现明显的负相关性(r^2=0.986和r^2=0.991),LDH含量与Caspase-3/7蛋白活性呈现明显正相关性(r^2=0.999);荧光标记染色法观察到明显的细胞内磷脂质蓄积。结论阿霉素可诱导磷脂质在HK-2细胞内大量蓄积,导致细胞膜受损和细胞功能障碍,以及引发细胞凋亡,产生细胞毒性。
出处 《毒理学杂志》 CAS CSCD 北大核心 2016年第4期299-301,共3页 Journal of Toxicology
基金 上海市科学技术委员会资助项目(10DZ2220500)
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