天津医药 ›› 2016, Vol. 44 ›› Issue (5): 552-555.doi: 10.11958/20160018

• 专题研究-消化疾病 • 上一篇    下一篇

miR-506 对肝癌细胞恶性表型的影响

刘涛 1, 2, 祖彩华 3, 沈中阳 1, 2△   

  1. 1天津市第一中心医院卫生部危重病急救医学重点实验室 (邮编300384), 2器官移植中心; 3天津医科大学一中心临床学院 作者简介: 刘涛 (1981), 男, 主管技师, 博士, 主要从事非编码RNA对肿瘤细胞的调控研究
  • 收稿日期:2016-01-14 修回日期:2016-02-15 出版日期:2016-05-15 发布日期:2016-05-18
  • 通讯作者: △通讯作者 E-mail:shenzy_2014@163.com E-mail:taoliu810813@163.com
  • 作者简介:刘涛 (1981), 男, 主管技师, 博士, 主要从事非编码RNA对肿瘤细胞的调控研究
  • 基金资助:
    国家自然科学基金资助项目 (81402322); 天津市企业博士后创新项目择优资助计划资助项目 (2013)

Effects of miR-506 on malignance phenotypes of hepatocellular carcinoma cells

LIU Tao1,2, ZU Caihua3, SHEN Zhongyang1,2△   

  1. 1 Key Laboratory for Critical Care Medicine of the Ministry of Health, 2 Organ Transplant Center, Tianjin First Central Hospital, Tianjin 300384, China; 3 First Central Clinical College, Tianjin Medical University
  • Received:2016-01-14 Revised:2016-02-15 Published:2016-05-15 Online:2016-05-18
  • Contact: △Corresponding Author E-mail:shenzy_2014@163.com E-mail:taoliu810813@163.com
  • Supported by:
    ;Tianjin Postdoctoral Science Foundation

摘要: 摘要:目的 探讨微 RNA-506(microRNA-506,miR-506)对肝癌细胞活性、 增殖和侵袭等恶性表型的调控作 用。方法 以肝癌细胞系 HepG2 和 QGY-7703 为模型, 依处理方式不同分别分为细胞常规培养 (细胞对照) 组、 pcD⁃ NA3 空载体对照组、 转染 pcDNA3/pri-506 过表达 miR-506 (过表达 miR-506) 组、 pSIH1 空载体对照组及转染 pSIH1/ TuD-506 抑制 miR-506 (抑制 miR-506) 组。实时定量逆转录 PCR 检测细胞内 miR-506 的表达水平。分别用 CCK- 8 实验、 体外集落形成实验和 Transwell 侵袭实验检测各组细胞的活性、 集落形成能力和侵袭能力。结果 在肝癌细 胞系 HepG2 和 QGY-7703 中, 与对应的空载体对照组相比, 过表达 miR-506 组的细胞内 miR-506 表达水平升高, 而 抑制 miR-506 组的细胞内 miR-506 表达水平降低(P<0.05); 过表达 miR-506 组细胞活性降低且形成集落的数量 和穿过 Transwell 微孔的细胞数量均减少, 而抑制 miR-506 组细胞活性升高且形成集落的数量和穿过 Transwell 微孔 的细胞数量均明显增加(P<0.05)。与细胞对照组相比, pcDNA3 空载体对照组和 pSIH1 空载体对照组均不影响以 上各指标 (P>0.05)。结论 miR-506 抑制肝癌细胞的活性、 集落形成能力和侵袭能力等恶性表型, 在肝癌细胞中发 挥抑癌基因的作用。

关键词: 微 RNAs, 肝肿瘤, 基因, 肿瘤抑制, 肿瘤侵润, 细胞活性, miR-506

Abstract: Abstract:Objective To investigate effects of microRNA-506 (miR-506) on malignant phenotypes of hepatocellular carcinoma (HCC) cells, including cellular viability, proliferation and invasion. Methods HCC cell lines HepG2 and QGY- 7703 were served as model. Five experimental groups were established in this study, including cell control, pcDNA3 blank vector control, miR-506 over-expression, pSIH1 blank vector control and miR-506 suppression groups. Real-time reverse transcription PCR assay was performed to measure miR- 506 level. CCK- 8, colony formation and Transwell assays were performed to detect viability, colony formation activity and invasion activity of HCC cell lines, respectively. Effects of miR- 506 on these indexes were evaluated. Results In HepG2 and QGY-7703 cell lines, miR-506 level increased in the miR- 506 over-expression group (P<0.01), and its level decreased in the miR-506 suppression group (P<0.05) compared with the related blank vector control groups. In the miR-506 over-expression group, cellular viability was significantly reduced (P<0.01), cell colony number decreased, and number of cell penetrating Transwell microporous membrane was also decreased (P<0.01). In the miR- 506 suppression group, cellular viability significantly increased (P<0.01), and both colony number and penetrating cell number increased (P<0.05). Also, there were no effects on the above indexes in pcDNA3 and pSIH1 blank vector control groups compared with those of cell control group (P>0.05). Conclusion miR- 506 plays a tumor suppressor role in HCC cells by inhibiting cell viability, colony formation and invasion.

Key words: microRNAs, liver neoplasms, genes, tumor suppressor, neoplasm invasiveness, cell viability, miR-506