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Genome-wide Screen for miRNA Targets Using the MISSION Target ID Library
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Published on: April 6, 2012

MicroRNA-210 regulates cancer cell proliferation through targeting fibroblast growth factor receptor-like 1 (FGFRL1)

Soken Tsuchiya1, Takeshi Fujiwara, Fumiaki Sato

  • 1Department of Nanobio Drug Discovery, Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29 Yoshida Shimoadachi, Sakyo-ku, Kyoto 606-8501, Japan.

The Journal of Biological Chemistry
|November 4, 2010
PubMed

Insights

MicroRNA-210 (miR-210) is down-regulated in esophageal cancer, inhibiting cancer cell survival and proliferation. It targets FGFRL1, a protein that accelerates cancer cell growth.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • MicroRNAs (miRNAs) play a crucial role in human cancers.
  • Esophageal squamous cell carcinoma (ESCC) is a significant global health concern.

Purpose of the Study:

  • To investigate the role of microRNA-210 (miR-210) in esophageal squamous cell carcinoma.
  • To identify the molecular targets and mechanisms of miR-210 in ESCC.

Main Methods:

  • Quantitative real-time PCR to measure miR-210 expression levels in ESCC tissues and cell lines.
  • Cell viability, proliferation, and cell cycle assays to assess the functional impact of miR-210.
  • Western blotting and luciferase reporter assays to validate FGFRL1 as a direct target of miR-210.

Main Results:

  • miR-210 expression was significantly down-regulated in ESCC tissues, particularly in poorly differentiated tumors.
  • Restoration of miR-210 inhibited ESCC cell survival and proliferation by inducing G(1)/G(0) and G(2)/M cell cycle arrest.
  • Fibroblast growth factor receptor-like 1 (FGFRL1) was identified as a direct target of miR-210.
  • FGFRL1 overexpression promoted ESCC cell proliferation by inhibiting G(1)/G(0) cell cycle arrest.

Conclusions:

  • miR-210 functions as a tumor suppressor in esophageal squamous cell carcinoma.
  • The miR-210/FGFRL1 axis is a critical regulator of ESCC cell proliferation and survival.

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