基础医学与临床 ›› 2017, Vol. 37 ›› Issue (7): 1037-1041.

• 研究论文 • 上一篇    下一篇

luminal A 型乳腺癌组织中长链非编码RNA ENST00000460164的表达及对细胞周期的影响

周琳1,喻修为2,陶凯2,杨诚诚2,刘胜春2   

  1. 1. 重庆医科大学
    2. 重庆医科大学附属第一医院
  • 收稿日期:2017-03-02 修回日期:2017-05-16 出版日期:2017-07-05 发布日期:2017-06-23
  • 通讯作者: 刘胜春 E-mail:liushengchun1968@163.com
  • 基金资助:
    TMP21基因转录调控对胰腺肿瘤细胞凋亡和增殖活性影响的分子机制

Expression level of lncRNA-ENST00000460164 in luminal A breast cancer and its effect on cell cycle

  • Received:2017-03-02 Revised:2017-05-16 Online:2017-07-05 Published:2017-06-23

摘要: 目的 明确lncRNA-ENST00000460164在人luminal A型乳腺癌组织中的表达及作用。方法 用RT-qPCR检测ENST00000460164在17例配对的luminal A型乳腺癌及癌旁组织中的表达。将pll3.7-ENST00000460164-shRNA及pll3.7空载体转染MCF-7细胞,用流式细胞计量技术和Western blot检测转染后MCF-7细胞周期及其关键蛋白cyclin D1和p16INK4A的表达。结果 长链非编码RNA ENST00000460164 在luminal A型乳腺癌组织中呈高表达趋势;在MCF-7细胞中敲低ENST0000460164后,G1期明显延长,S期明显缩短(p<0.05);G1期关键调控蛋白cyclin D1表达水平明显降低,p16INK4A表达明显上调(p<0.05)。结论 ENST00000460164 在luminal A型乳腺癌组织中是高表达状态;ENST00000460164可能通过调控cyclin D1或者p16INK4A的表达改变细胞周期。

关键词: luminal A乳腺癌, 长链非编码RNA ENST00000460164, 细胞周期

Abstract: Objective To validate the expression level and the role of ENST00000460164 in luminal A breast cancer. Methods The expression level of ENST00000460164 in breast cancer tissues was detected by RT-qPCR. pll3.7-ENST00000460164-shRNA and empty vector,pll3.7,were transfected into MCF-7 cells. Cell cycle was measured by flow cytometry. Western blot was used to detect the expression of p16INK4A and cyclinD1. Results ENST00000460164 was highly expressed in luminal A breast cancer tissues compared to the adjacent non-cancer tissues. The knockdown of ENST00000460164 results in the G1 cell-cycle arrested, cyclin D1 downregulated and P16INK4A upregulated in MCF-7 cells. Conclusions ENST00000460164 is overexpressed in luminal A breast cancer. ENST00000460164 may control G1/S transition by regulating p16INK4A or cyclin D1 expression.

Key words: luminal A breast cancer, lncRNA ENST00000460164, cell cycle

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