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MiR-16 inhibits proliferation of cervical cancer cells by regulating KRAS

Z Ding1, S-J Liu, X-W Liu

  • 1Department of Oncology, Affiliated Hospital of Jining Medical University, Jining, Jining, China. qz227@126.com.

European Review for Medical and Pharmacological Sciences
|November 6, 2020
PubMed
Abstract

Insights

MicroRNA-16 (miR-16) suppresses cervical cancer cell growth and promotes apoptosis by targeting KRAS. This study reveals miR-16 as a potential therapeutic agent for cervical cancer, highlighting its role in regulating cell viability and proliferation.

Area of Science:

  • Oncology
  • Molecular Biology
  • Biochemistry

Background:

  • Cervical cancer (CC) remains a significant global health challenge.
  • Understanding the molecular mechanisms underlying CC progression is crucial for developing effective therapies.
  • MicroRNAs (miRNAs) are emerging as key regulators in various cancers, including CC.

Purpose of the Study:

  • To investigate the effect of microRNA-16 (miR-16) on the proliferation and apoptosis of cervical cancer cells.
  • To elucidate the regulatory mechanism of miR-16 in cervical cancer.
  • To identify downstream targets of miR-16 in HCC94 cells.

Main Methods:

  • Bioinformatic analysis identified Kirsten rat sarcoma viral oncogene homolog (KRAS) as a potential target of miR-16.
  • HCC94 cervical cancer cells were transfected with miR-16 mimic, miR-16 siRNA, or control.
  • Cell viability, proliferation, and apoptosis were assessed using CCK-8, EdU staining, and flow cytometry.
  • KRAS protein expression was analyzed by Western blotting.

Main Results:

  • MiRNA database analysis confirmed KRAS as a downstream target of miR-16.
  • Overexpression of miR-16 significantly decreased HCC94 cell viability and proliferation while increasing apoptosis.
  • Conversely, inhibition of miR-16 enhanced cell viability and proliferation and reduced apoptosis.
  • miR-16 mimic transfection led to decreased KRAS protein levels, while miR-16 siRNA increased them.

Conclusions:

  • MiR-16 is downregulated in HCC94 cervical cancer cells.
  • Upregulation of miR-16 inhibits cervical cancer cell viability and proliferation and promotes apoptosis.
  • These effects are mediated through the targeted regulation of KRAS.
  • miR-16 holds potential as a therapeutic target for cervical cancer.

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