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miR-21对MCF7乳腺癌细胞增殖及VEGF和HIF-1α表达的影响 被引量:4

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摘要 目的分析miR-21抑制乳腺癌细胞MCF7增殖的效果及对血管内皮生长因子(VEGF)和缺氧诱导因子1α(HIF-1α)的调控作用。方法以未转染乳腺癌细胞(空白对照组)和转染空载体pGL3乳腺癌细胞(阴性组)为对照,将miR-21表达载体pGL3-miR-21表达载体瞬时转染MCF7乳腺癌细胞(转染组),real-time PCR检测miR-21的表达,MTT法分析细胞的增殖情况,Western blot法分析HIF-1α、VEGF及其受体的表达变化。结果 pGL3-miR-21转染后乳腺癌细胞miR-21表达明显高于空白对照组和阴性组,增殖率明显降低,且差异有统计学意义(P<0.05);与空白对照组和阴性组相比,转染组乳腺癌细胞的VEGF、VEGFR及HIF-1α蛋白表达明显降低,且差异有统计学意义(P<0.05)。结论 miR-21能有效抑制乳腺癌细胞增殖,且此过程可能与VEGF及其受体表达的降低有关。
出处 《中国医师杂志》 CAS 2019年第8期1220-1222,共3页 Journal of Chinese Physician
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