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MicroRNA-15a-5p down-regulation inhibits cervical cancer by targeting TP53INP1 in vitro

X-Q Zhao1, H Tang, J Yang

  • 1Medical School of Nantong University, Nantong, China. dingye012319@163.com.

European Review for Medical and Pharmacological Sciences
|October 25, 2019
PubMed
Abstract

Insights

MicroRNA-15a-5p (miR-15a-5p) promotes cervical cancer by targeting TP53INP1. Down-regulating miR-15a-5p inhibits cancer cell growth and boosts apoptosis, suggesting it as a potential therapeutic target.

Area of Science:

  • Oncology
  • Molecular Biology
  • Biochemistry

Background:

  • MicroRNAs (miRNAs) are crucial regulators in cancer development, acting as either tumor suppressors or oncogenes.
  • Cervical cancer progression involves complex molecular mechanisms, including the dysregulation of specific miRNAs.

Purpose of the Study:

  • To investigate the relationship between microRNA-15a-5p (miR-15a-5p) and TP53 regulated inhibitor of apoptosis 1 (TP53INP1) in cervical cancer.
  • To elucidate the role of miR-15a-5p in the proliferation and apoptosis of cervical cancer cells in vitro.

Main Methods:

  • Quantitative Real-Time PCR (qRT-PCR) to assess miR-15a-5p expression in cervical cancer tissues and cell lines.
  • Dual-Luciferase Reporter Assay to confirm the direct targeting of TP53INP1 by miR-15a-5p.
  • Cell Counting Kit-8 (CCK-8) and flow cytometry to evaluate the impact of miR-15a-5p on cell proliferation and apoptosis.

Main Results:

  • miR-15a-5p expression was significantly upregulated in cervical cancer tissues and cell lines.
  • TP53INP1 was identified as a direct target of miR-15a-5p and was found to be downregulated in cervical cancer.
  • Downregulation of miR-15a-5p suppressed cervical cancer cell proliferation and induced apoptosis, while TP53INP1 downregulation impaired these tumor-inhibitory effects.

Conclusions:

  • miR-15a-5p acts as an oncogene in cervical cancer by directly targeting TP53INP1.
  • miR-15a-5p represents a potential therapeutic target for cervical cancer treatment.

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