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miR-186 suppressed CYLD expression and promoted cell proliferation in human melanoma

Haijiang Qiu1, Suirong Yuan1, Xiaohe Lu2

  • 1Department of Ophthalmology, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, Guangdong 510180, P.R. China.

Oncology Letters
|October 5, 2016
PubMed

Insights

MicroRNA-186 (miR-186) promotes melanoma cell growth by suppressing the tumor suppressor cylindromatosis (CYLD). This study reveals miR-186

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • MicroRNA-186 (miR-186) is implicated in various cancers.
  • Its specific role and mechanisms in melanoma are not well understood.

Purpose of the Study:

  • To investigate the function and mechanism of miR-186 in melanoma development.
  • To identify potential targets of miR-186 in melanoma cells.

Main Methods:

  • Quantitative real-time PCR to assess miR-186 expression in melanoma tissues and cells.
  • Cell proliferation assays (including anchorage-independent growth) to evaluate miR-186's functional impact.
  • Bioinformatics analysis and luciferase reporter assays to identify and validate miR-186 targets.
  • Western blotting to assess protein levels of target genes.

Main Results:

  • miR-186 was significantly overexpressed in melanoma tissues and cells compared to normal counterparts.
  • Overexpression of miR-186 enhanced melanoma cell proliferation and anchorage-independent growth.
  • Cylindromatosis (CYLD), a tumor suppressor, was identified as a direct target of miR-186.
  • Inhibition of CYLD mimicked the oncogenic effects of miR-186 overexpression, and miR-186 directly suppressed CYLD expression.

Conclusions:

  • miR-186 plays a critical role in promoting melanoma cell growth.
  • The oncogenic function of miR-186 in melanoma is primarily mediated by the direct suppression of the tumor suppressor CYLD.
Keywords:
CYLDcell proliferationmelanomamiR-186

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