医学分子生物学杂志 ›› 2022, Vol. 19 ›› Issue (5): 353-359.doi: 10.3870/j.issn.1672-8009.2022.05.001

• 论著 •    下一篇

miR-133b 靶向 PTBP1 对肾细胞癌增殖和侵袭的影响

  

  1. 1哈尔滨医科大学附属第一医院泌尿外科 哈尔滨市, 150001  2黑龙江省医院泌尿外科 哈尔滨市, 150036
  • 出版日期:2022-09-30 发布日期:2023-01-13

Effect of miR-133b on the Cell Proliferation and Invasion of Renal Cell Carcinoma by Targeting PTBP1

  1. 1Department of Urology Surgery, the First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China  2Department of Urology Surgery, Heilongjiang Hospital, Harbin, 150036, China
  • Online:2022-09-30 Published:2023-01-13

摘要: 目的 探讨 miR-133b 靶向多聚嘧啶区结合蛋白1 (polyrimidine tract binding protein 1, PTBP1) 对 肾细胞癌 (renal cell carcinoma, RCC) 增殖和侵袭的影响。 方法 检测 miR-133b 在 RCC 癌组织及细胞中 的表达水平; 验证 miR-133b 与 PTBP1 的靶向关系及 miR-133b 表达对肾癌细胞 PTBP1 表达及增殖、 迁移的 影响。 结果 与癌旁组织比较, miR-133b 在 RCC 组织中表达下降, 而 PTBP1 上升 (P< 0. 05)。 PTBP1 是 miR-133b 的靶基因; 与 miR-NC 组比较, miR-133b mimic 组的克隆形成率、 侵袭细胞数目及 PTBP1 表达明 显下降, 而 miR-133b inhibitor 组上升; 与 miR-133b mimic + pc-NC 组比较, miR-133b mimic + pc-PTBP1 组的 克隆形成率、 侵袭细胞数目及 PTBP1 表达水平上升 (P< 0. 05)。 结论 miR-133b 在 RCC 癌组织及细胞中 表达下调, 且其可能通过调控 PTBP1 的表达水平来影响细胞的增殖和侵袭能力。

关键词: 肾细胞癌, miR-133b, 多聚嘧啶区结合蛋白 1, 增殖, 侵袭

Abstract: Objective To explore the effect of miR-133b on the cell proliferation and invasion of renal cell carcinoma ( RCC) by targeting polypyrimidine tract binding protein 1 ( PTBP1 ). Methods The expression level of miR-133b in RCC tissues and cells were detected. The targeting relationship between miR-133b and PTBP1 was verified. The effect of miR-133b on proliferation and migration of RCC cells were detected. Results The expression level of miR-133b in RCC tissues was decreased, while PTBP1 was up-regulated when compared with para-carcinoma tissues (P < 0. 05). PTBP1was the target gene of miR-133b. The colony formation rate, the number of invasive cells and the expression level of PTBP1 were significantly decreased in miR-133b mimic group, but were significantly increased in miR-133b inhibitor group, when compared with miR-NC group. The colony formation rate, the number of invasive cells and the expression level of PTBP1 were increased in miR-133b mimic + pc-PTBP1 group when compared with miR-133b mimic + pc-NC group (P< 0. 05). Conclusion miR-133b expression is down-regulated in RCC tissues and cells, which may affect cell proliferation and invasion by the regulation of PTBP1.

Key words: renal cell carcinoma, miR-133b, olypyrimidine tract binding protein 1, proliferation, invasion

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