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miRNA-183∼96∼182 regulates melanogenesis, cell proliferation and migration in B16 cells

Bin Du1, Xuexian Liu1, Ajab Khan1

  • 1College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, China.

Acta Histochemica
|January 26, 2020
PubMed

Insights

The miRNA-183 cluster regulates melanoma cell biology by targeting Microphthalmia-associated transcription factor (MITF). This impacts melanogenesis, cell proliferation, and migration in B16 melanoma cells.

Area of Science:

  • Molecular Biology
  • Cancer Research
  • Genetics

Background:

  • Melanoma is an aggressive skin cancer with poor prognosis.
  • MicroRNAs (miRNAs) are key regulators of melanoma biology.
  • The miRNA-183 cluster (miRNA-183∼96∼182) is implicated in tumor development.

Purpose of the Study:

  • To investigate the role of the miRNA-183 cluster in B16 melanoma cells.
  • To identify targets of the miRNA-183 cluster involved in melanoma.
  • To elucidate the mechanisms by which the miRNA-183 cluster affects melanoma cell functions.

Main Methods:

  • Bioinformatic analysis to predict miRNA targets.
  • Overexpression and knockdown of the miRNA-183 cluster in B16 cells.
  • Luciferase activity assays to confirm target interaction.
  • Quantitative analysis of gene and protein expression (MITF, TYR, TYRP1, DCT, MEK1, ERK1/2, CREB).
  • Assessment of melanin and eumelanin production.

Main Results:

  • Microphthalmia-associated transcription factor (MITF) was identified and confirmed as a direct target of the miRNA-183 cluster.
  • Modulation of the miRNA-183 cluster inversely affected MITF expression at mRNA and protein levels.
  • The miRNA-183 cluster regulated the expression of melanogenesis genes (TYR, TYRP1, DCT) and melanin production.
  • The miRNA-183 cluster influenced cell proliferation and migration by regulating the MEK1/ERK1/2/CREB pathway.

Conclusions:

  • The miRNA-183 cluster directly targets MITF, regulating melanogenesis in B16 melanoma cells.
  • The miRNA-183 cluster controls melanoma cell proliferation and migration via the MITF-mediated pathway.
  • This study highlights the miRNA-183 cluster as a potential therapeutic target in melanoma.
Keywords:
B16 cellMAPKMITFMelanogenesisMigrationProliferationmicroRNA-183 cluster

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