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Updated: Aug 8, 2026

Genome-wide Screen for miRNA Targets Using the MISSION Target ID Library
08:40

Genome-wide Screen for miRNA Targets Using the MISSION Target ID Library

Published on: April 6, 2012

Alternative mechanisms of miR-34a regulation in cancer

Eva Slabáková1, Zoran Culig2,3, Ján Remšík1,2,4

  • 1Department of Cytokinetics, Institute of Biophysics of the Czech Academy of Sciences, Brno, Czech Republic.

Cell Death & Disease
|October 13, 2017
PubMed

Insights

MicroRNA miR-34a is a tumor suppressor, but its role is complex. This review explores p53-independent pathways regulating miR-34a, crucial for cancer therapy development.

Area of Science:

  • Oncology
  • Molecular Biology
  • Epigenetics

Background:

  • MicroRNA miR-34a acts as a tumor suppressor, with replacement strategies explored in cancer therapy.
  • Its targets regulate cancer cell proliferation, survival, and therapy resistance.
  • miR-34a expression is linked to the p53 tumor suppressor pathway, frequently altered in cancers.

Purpose of the Study:

  • To review p53-independent mechanisms regulating miR-34a expression.
  • To discuss epigenetic regulation and miRNA maturation affecting miR-34a.
  • To summarize miR-34a modulation effects in models with defective p53.

Main Methods:

  • Literature review of p53-independent miR-34a regulation.
  • Analysis of mechanisms including promoter interaction, epigenetic changes, and miRNA maturation.
  • Examination of studies on miR-34a effects in cell and animal models with compromised p53.

Main Results:

  • Multiple p53-independent pathways influence miR-34a expression, including oncogene signaling, EMT, and inflammation.
  • Epigenetic modifications and miRNA maturation processes are key regulatory factors.
  • miR-34a modulation shows effects in models with disrupted p53, relevant to cancer therapy.

Conclusions:

  • Understanding p53-independent miR-34a regulation is critical for effective miR-34a-based cancer therapies.
  • Context-dependent feedback loops and epigenetic factors significantly impact miR-34a function.
  • Further research into these mechanisms is needed to optimize therapeutic strategies in diverse cancer types.

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