调节细胞自噬增强卵巢癌顺铂敏感性的体外研究Adjusting autophagy to augment sensitivity of cisplatin in ovarian carcinoma in vitro.
徐曼;瞿全新;李雪轻;张栋;
摘要(Abstract)：
目的:探讨细胞自噬与上皮性卵巢癌顺铂耐药的关系及调节细胞自噬对卵巢癌顺铂耐药的影响。方法:应用MTT法、MDC荧光染色法及激光共聚焦显微镜技术,观察SKOV3、SKOV3/DDP细胞株自噬现象;通过自噬特异性抑制剂3-MA作用,了解3-MA对卵巢癌细胞胞浆内自噬体的抑制作用及抑制细胞自噬对卵巢癌顺铂敏感性的影响。结果:SKOV3细胞株顺铂IC50值为3.330μg/ml,SKOV3/DDP细胞株顺铂IC50值为14.152μg/ml。3-MA联合顺铂作用后SKOV3细胞株的顺铂IC50值为3.312μg/ml,其对顺铂的敏感性无明显影响(P=0.221),SKOV3/DDP细胞株顺铂IC50值为6.386μg/ml,提示3-MA可提高上皮性卵巢癌顺铂耐药细胞对顺铂的敏感性(P=0.000)。MDC荧光染色及激光共聚焦显微镜观察SKOV3、SKOV3/DDP细胞株胞浆自噬体的形成情况,顺铂能够诱导自噬体的生成,在3-MA作用下,SKOV3/DDP细胞株顺铂诱导的自噬体荧光强度变小,而SKOV3细胞株自噬体的荧光强度变化不大。结论:细胞自噬活性增强与上皮性卵巢癌顺铂耐药有关,抑制细胞自噬活性可以部分逆转上皮性卵巢癌SKOV3/DDP顺铂耐药,但不改变顺铂敏感型细胞SKOV3对顺铂的敏感性。
关键词(KeyWords)： 细胞自噬;卵巢癌;顺铂耐药;3-甲级腺嘌呤;激光共聚焦显微镜
基金项目(Foundation):
作者(Authors): 徐曼;瞿全新;李雪轻;张栋;
DOI: 10.13283/j.cnki.xdfckjz.2010.12.022
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