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MIR-520f Regulated Itch Expression and Promoted Cell Proliferation in Human Melanoma Cells

Ming-Xia Sun1, Qun An2, La-Mei Chen1

  • 1Department of Dermatology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, People's Republic of China.

Dose-Response : a Publication of International Hormesis Society
|May 20, 2020
PubMed

Insights

MicroRNA miR-520f is upregulated in human melanoma and promotes cancer cell growth. It targets the circular RNA Itchy E3 ubiquitin protein ligase (ITCH), suggesting miR-520f as a potential therapeutic target.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • MicroRNA (miRNA) dysregulation is implicated in cancer development.
  • The specific role of miR-520f in human melanoma pathogenesis is not well understood.

Purpose of the Study:

  • To investigate the function of miR-520f in human melanoma.
  • To identify potential molecular targets and mechanisms of miR-520f in melanoma.

Main Methods:

  • Quantitative analysis of miR-520f expression in melanoma cell lines and tissues.
  • Cell proliferation assays (MTT, colony formation, BrdU, anchorage-independent growth).
  • Interaction studies between miR-520f and the 3'-untranslated region of the circular RNA Itchy E3 ubiquitin protein ligase (ITCH), including knockdown experiments.

Main Results:

  • miR-520f expression is significantly increased in human melanoma cell lines and clinical tissues.
  • Overexpression of miR-520f enhances melanoma cell proliferation and growth.
  • miR-520f directly interacts with the ITCH 3'-UTR, leading to suppression of ITCH expression.
  • Knockdown of ITCH partially reverses the proliferative effects induced by miR-520f.

Conclusions:

  • miR-520f plays a critical role in regulating human melanoma cell growth by targeting ITCH.
  • miR-520f represents a potential diagnostic biomarker and therapeutic target for human melanoma.
Keywords:
ITCHcell proliferationhuman melanomamiR-520f

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