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[MicroRNA-34a regulates cell cycle by targeting CD44 in human bladder carcinoma cells]

Gan Yu1, Kai Xu, Shian Xu

  • 1Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.E-mail: cdyi1987@126.com.

Nan Fang Yi Ke Da Xue Xue Bao = Journal of Southern Medical University
|July 23, 2015
PubMed
Abstract

Insights

MicroRNA-34a (miR-34a) regulates bladder cancer cell cycles by targeting CD44. Modulating miR-34a impacts cell cycle progression in J82 cells, offering potential therapeutic insights.

Area of Science:

  • Oncology
  • Molecular Biology
  • Gene Regulation

Background:

  • Bladder cancer is a significant health concern.
  • MicroRNAs (miRNAs) play crucial roles in cancer development and progression.
  • Dysregulation of miR-34a has been implicated in various cancers.

Purpose of the Study:

  • To investigate the role of microRNA-34a (miR-34a) in regulating the cell cycles of the J82 bladder cancer cell line.
  • To explore the underlying molecular mechanism involving CD44.

Main Methods:

  • J82 cells were transfected with miR-34a mimic or inhibitor.
  • Real-time PCR and Western blotting were used to assess miR-34a and CD44 expression.
  • Luciferase reporter assay and flow cytometry analyzed CD44 3'UTR activity and cell cycle changes.

Main Results:

  • miR-34a mimic increased miR-34a and decreased CD44 expression; inhibitor showed reverse effects.
  • miR-34a modulated CD44 3'UTR activity and affected cell cycle-related proteins.
  • miR-34a induced opposite cell cycle changes in J82 cells, partly reversed by CD44.

Conclusions:

  • MicroRNA-34a regulates cell cycles by targeting CD44 in the J82 human bladder carcinoma cell line.
  • This study elucidates a novel mechanism of miR-34a in bladder cancer progression.

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