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An In Vitro Protocol for Evaluating MicroRNA Levels, Functions, and Associated Target Genes in Tumor Cells
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MicroRNA-186 Suppresses Cell Proliferation and Metastasis Through Targeting Sentrin-Specific Protease 1 in Renal Cell

Dan Jiao1, Man Wu2, Lei Ji3

  • 1Department of Ultrasound, China-Japan Union Hospital of Jilin University, Changchun, Jilin, P.R. China.

Oncology Research
|May 28, 2017
PubMed

Insights

MicroRNA 186 (miR-186) acts as a tumor suppressor in renal cell carcinoma (RCC). Its downregulation promotes cancer progression by targeting SENP1, offering a potential therapeutic biomarker for RCC.

Area of Science:

  • Molecular Biology
  • Oncology
  • Biochemistry

Background:

  • MicroRNA (miRNA) dysregulation is linked to various cancers.
  • miR-186 is implicated in cancer, but its role in renal cell carcinoma (RCC) is unclear.

Purpose of the Study:

  • To investigate the functional role and molecular mechanism of miR-186 in RCC.
  • To determine if miR-186 acts as a tumor suppressor in RCC.

Main Methods:

  • Quantitative real-time PCR to measure miR-186 expression in RCC tissues and cell lines.
  • Cell proliferation, colony formation, invasion, cell cycle, and apoptosis assays.
  • Bioinformatics analysis, luciferase reporter assays, and Western blotting to identify and validate miR-186 targets.
  • Immunohistochemistry to assess SENP1 expression in RCC specimens.

Main Results:

  • miR-186 expression was significantly downregulated in RCC tissues and cell lines.
  • Overexpression of miR-186 inhibited RCC cell proliferation, invasion, and induced cell cycle arrest and apoptosis.
  • SENP1 was identified as a direct target of miR-186, with inverse correlation in RCC tissues.
  • SENP1 restoration partially reversed the anti-tumor effects of miR-186 by activating NF-κB signaling.

Conclusions:

  • miR-186 functions as a tumor suppressor in RCC progression.
  • miR-186 directly targets SENP1, influencing NF-κB signaling.
  • miR-186 is a potential therapeutic biomarker for RCC.

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