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A curated database of miRNA mediated feed-forward loops involving MYC as master regulator

Mariama El Baroudi1, Davide Corà, Carla Bosia

  • 1Department of Theoretical Physics, University of Turin and National Institute for Nuclear Physics, Turin, Italy.

Plos One
|March 11, 2011
PubMed
Abstract

Insights

This study identifies Myc-regulated gene networks involving microRNAs and transcription factors in humans. It details mixed feed-forward loops, offering new insights into gene regulation in cancer.

Area of Science:

  • Molecular Biology
  • Genomics
  • Cancer Research

Background:

  • The MYC transcription factors play a crucial role in numerous human cancers.
  • Limited understanding exists regarding the cooperative roles of Myc and microRNAs in gene regulation at both transcriptional and post-transcriptional levels.

Purpose of the Study:

  • To identify and characterize mixed microRNA/Transcription Factor Feed-Forward Loops (FFLs) regulated by Myc in humans.
  • To analyze the statistical and functional properties of these Myc-driven regulatory circuits.

Main Methods:

  • Utilized independent databases containing experimentally validated data.
  • Identified and characterized mixed microRNA/Transcription Factor FFLs regulated by Myc.
  • Examined regulatory interactions supported by experimental evidence.

Main Results:

  • Assembled and characterized a comprehensive catalog of human mixed Transcription Factor/microRNA FFLs.
  • Myc was identified as the master regulator in these identified circuits.
  • Detailed analysis of specific examples including E2F1, PTEN, RB1, and VEGF.

Conclusions:

  • Successfully created a catalog of human mixed Transcription Factor/microRNA FFLs with Myc as the master regulator.
  • All identified regulatory interactions within these circuits are experimentally verified.
  • Provides a foundation for understanding complex gene regulation in cancer biology.

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