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MiR-125a-5p inhibits cell proliferation, cell cycle progression, and migration while promoting apoptosis in head and

Mimi Xu1, Jiandong Zhan2, Jiaxuan Xie3

  • 1Department of Otolaryngology-Head and Neck Surgery, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510080, China; The Second School of Clinical Medicine, Southern Medical University.

Auris, Nasus, Larynx
|October 20, 2020
PubMed
Abstract

Insights

MicroRNA miR-125a-5p inhibits head and neck cancer cell proliferation and migration. This microRNA targets ERBB3, suggesting a new therapeutic avenue for head and neck cancers.

Area of Science:

  • Oncology
  • Molecular Biology
  • Gene Regulation

Background:

  • Head and neck cancer is a prevalent global malignancy.
  • MicroRNAs (miRNAs) are critical regulators in cancer development.
  • Understanding specific miRNA roles is crucial for therapeutic advancements.

Purpose of the Study:

  • To investigate the mechanism of miR-125a-5p in head and neck cancer cell proliferation, migration, and apoptosis.
  • To identify the target genes of miR-125a-5p.

Main Methods:

  • Cell proliferation assessed via colony formation and BrdU assays.
  • Cell cycle distribution and apoptosis evaluated using flow cytometry.
  • Cell migration analyzed with Transwell assays.
  • Target gene validation through luciferase activity and Western blot.

Main Results:

  • Overexpression of miR-125a-5p suppressed head and neck cancer cell proliferation and induced cell cycle arrest.
  • miR-125a-5p promoted apoptosis and inhibited migration.
  • ERBB3 was identified as a direct target gene, with miR-125a-5p downregulating its expression.
  • ERBB3 partially mediated the inhibitory effects of miR-125a-5p on proliferation.

Conclusions:

  • The miR-125a-5p/ERBB3 axis is implicated in regulating proliferation, cell cycle, migration, and apoptosis in head and neck cancer.
  • This axis represents a potential therapeutic target for head and neck cancer treatment.
Keywords:
Cell cycleErb-B2 receptor tyrosine kinase 3Head and neck cancerMicroRNA-125a-5pProliferation

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