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Yeast As a Chassis for Developing Functional Assays to Study Human P53
14:57

Yeast As a Chassis for Developing Functional Assays to Study Human P53

Published on: August 4, 2019

MicroRNAs, wild-type and mutant p53: more questions than answers

Matthew Jones1, Ashish Lal

  • 1Genetics Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.

RNA Biology
|June 6, 2012
PubMed

Insights

The tumor suppressor p53 network and microRNAs (miRNAs) have a complex crosstalk. This interaction influences gene expression, impacting cancer development and progression.

Area of Science:

  • Molecular Biology
  • Genetics
  • Cancer Biology

Background:

  • The p53 protein is a crucial tumor suppressor involved in regulating apoptosis, cell cycle arrest, and senescence.
  • MicroRNAs (miRNAs) are key regulators of gene expression with identified tumor-suppressive or oncogenic roles.
  • Emerging evidence highlights a bidirectional regulatory relationship between p53 and miRNAs.

Purpose of the Study:

  • To review the intricate crosstalk between the p53 network and miRNAs.
  • To discuss how this interaction influences gene expression and cellular processes.
  • To explore the implications of the miRNA-p53 network in cancer biology.

Main Methods:

  • Literature review of recent studies on p53 and miRNA interactions.
  • Analysis of mechanisms by which p53 affects miRNA transcription and maturation.
  • Examination of how miRNAs modulate p53 abundance and activity.
  • Investigation of mutant p53's role in repressing miRNA expression.

Main Results:

  • p53 transcriptionally regulates specific miRNAs and can influence their maturation.
  • miRNAs can modulate p53 levels and activity through various pathways.
  • Mutant p53 actively represses certain miRNAs targeted by wild-type p53.
  • This crosstalk significantly impacts cellular functions relevant to cancer.

Conclusions:

  • The interplay between p53 and miRNAs is a critical regulatory axis in cellular function.
  • Dysregulation of this network contributes to oncogenesis.
  • Understanding this crosstalk offers potential therapeutic strategies for cancer treatment.

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