组蛋白去甲基化酶JMJD3对乳腺癌干细胞的影响
Effects of a histone demethylase JMJD3 on the breast cancer stem cells
作者:胡楠;邓力;包旭;廉冰;江育莹;张建华;汪宏;
Author:
收稿日期: 年卷(期)页码:2018,33(05):-485-489
期刊名称:华西药学杂志
Journal Name:WEST CHINA JOURNAL OF PHARMACEUTICAL SCIENCES
关键字:组蛋白去甲基化酶;JMJD3;乳腺癌;肿瘤干细胞;MCF-7;无血清悬浮培养;侧群细胞分选;U0126;GSK-J1;抗肿瘤药物
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基金项目:
中文摘要
目的探索组蛋白去甲基化酶JMJD3对乳腺癌干细胞(BCSCs)的影响。方法采用改良后的无血清悬浮培养肿瘤干细胞的方法从乳腺癌MCF-7细胞系中分离扩增BCSCs;通过流式侧群细胞分选和免疫缺陷裸鼠腋下接种的方法检测BCSCs的生物学特性和致瘤性。采用Western Blot研究MCF-7及BCSCs中JMJD3表达的差异;采用CCK-8法检测JMJD3促进剂U0126及抑制剂GSK-J1对MCF-7增殖的影响;通过流式细胞侧群分选,检测GSK-J1、U0126对MCF-7中BCSCs比例的影响;采用Western Blot法研究GSK-J1、U0126对BCSCs中JMJD3蛋白表达的影响。结果改良后的无血清悬浮培养方法可成功地从MCF-7细胞系中分离并富集BCSCs;与MCF-7比较,BCSCs呈现出高致瘤性、JMJD3蛋白低表达性;U0126可抑制MCF-7的增殖,并降低MCF-7中BCSCs的比例,促进BCSCs中JMJD3的表达,而GSK-J1则呈现出相反的作用。结论JMJD3可抑制乳腺癌细胞的增殖,这种抑制作用可能与减少MCF-7中干细胞的比例有关。
参考文献
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