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表皮生长因子甲基化与肺腺癌细胞对吉非替尼耐药的相关性研究 被引量:1

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摘要 目的探讨表皮生长因子启动子甲基化与肺腺癌细胞对吉非替尼原发及继发耐药的相关性研究,为解决肺腺癌对吉非替尼耐药提供新的方法。方法研究采用甲基化转移酶抑制剂5-氮杂-2’-脱氧胞苷(5-aza-CdR)及吉非替尼,分别及联合处理肺腺癌细胞株H1299(原发耐药),H1975(T790M突变,继发耐药),HCC827(19外显子敏感突变),检测3株细胞的EGFR启动子甲基化水平的变化。同时采用CCK-8法测各组细胞的增殖抑制率,采用流式细胞技术测各组细胞的凋亡率。结果通过甲基化特异性PCR检测发现5-aza-CdR可以降低EGFR启动子甲基化水平,从而在体外细胞水平改善肺腺癌细胞对吉非替尼的原发和继发性耐药。结论EGFR启动子区高甲基化可能参与了肺腺癌细胞对吉非替尼的原发性和继发性耐药。5-aza-CdR联合吉非替尼可以部分改善肺腺癌细胞对吉非替尼的耐药。
出处 《江西医药》 CAS 2022年第4期335-338,348,共5页 Jiangxi Medical Journal
基金 江西省科技厅青年自然基金,编号20161BAB215260。
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