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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

Hormonal repression of miRNA biosynthesis through a nuclear steroid hormone receptor

Sally Fujiyama-Nakamura1, Kaoru Yamagata, Shigeaki Kato

  • 1Institute of Molecular and Cellular Biosciences, University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-0032, Japan.

Advances in Experimental Medicine and Biology
|June 2, 2011
PubMed

Insights

This study reveals how nuclear estrogen receptor regulates microRNA (miRNA) biogenesis. We show hormonal control over primary microRNA (pri-miRNA) processing, a key step in miRNA production.

Area of Science:

  • Molecular Biology
  • Gene Regulation
  • Biochemistry

Background:

  • MicroRNA (miRNA) biogenesis is crucial for gene expression regulation.
  • The "microprocessor" complex, containing Drosha and DGCR8, processes primary miRNAs (pri-miRNAs) into precursor miRNAs (pre-miRNAs).
  • The function of associated RNA-binding proteins and signal-dependent regulation of this complex are not fully understood.

Purpose of the Study:

  • To investigate the role of nuclear estrogen receptor in pri-miRNA processing.
  • To explore signal-dependent regulation of miRNA biogenesis.
  • To review recent findings on hormonally-regulated miRNA maturation.

Main Methods:

  • Review of recent experimental findings.
  • Analysis of pri-miRNA processing pathways.
  • Investigation of nuclear estrogen receptor interactions within the Drosha complex.

Main Results:

  • Hormonal regulation of pri-miRNA processing by the nuclear estrogen receptor has been identified.
  • This provides evidence for signal-dependent control over miRNA biogenesis.
  • Specific RNA-binding proteins associated with the Drosha complex may play roles in this regulation.

Conclusions:

  • Nuclear estrogen receptor directly influences pri-miRNA processing.
  • This highlights a novel mechanism for hormonal control of miRNA biogenesis.
  • Further research is needed to elucidate the roles of specific RNA-binding proteins in this pathway.

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