A Systems Approach Reveals that the Myogenesis Genome Network Is Regulated by the Transcriptional Repressor RP58

  • Shigetoshi Yokoyama
  • , Yoshiaki Ito
  • , Hiroe Ueno-Kudoh
  • , Hirohito Shimizu
  • , Kenta Uchibe
  • , Sonia Albini
  • , Kazuhiko Mitsuoka
  • , Shigeru Miyaki
  • , Minako Kiso
  • , Akane Nagai
  • , Tomohiro Hikata
  • , Tadahiro Osada
  • , Noritsugu Fukuda
  • , Satoshi Yamashita
  • , Daisuke Harada
  • , Valeria Mezzano
  • , Masataka Kasai
  • , Pier Lorenzo Puri
  • , Yoshihide Hayashizaki
  • , Haruo Okado
  • Megumi Hashimoto, Hiroshi Asahara

Research output: Contribution to journalArticlepeer-review

122 Scopus citations

Abstract

We created a whole-mount in situ hybridization (WISH) database, termed EMBRYS, containing expression data of 1520 transcription factors and cofactors expressed in E9.5, E10.5, and E11.5 mouse embryos-a highly dynamic stage of skeletal myogenesis. This approach implicated 43 genes in regulation of embryonic myogenesis, including a transcriptional repressor, the zinc-finger protein RP58 (also known as Zfp238). Knockout and knockdown approaches confirmed an essential role for RP58 in skeletal myogenesis. Cell-based high-throughput transfection screening revealed that RP58 is a direct MyoD target. Microarray analysis identified two inhibitors of skeletal myogenesis, Id2 and Id3, as targets for RP58-mediated repression. Consistently, MyoD-dependent activation of the myogenic program is impaired in RP58 null fibroblasts and downregulation of Id2 and Id3 rescues MyoD's ability to promote myogenesis in these cells. Our combined, multi-system approach reveals a MyoD-activated regulatory loop relying on RP58-mediated repression of muscle regulatory factor (MRF) inhibitors.

Original languageEnglish (US)
Pages (from-to)836-848
Number of pages13
JournalDevelopmental Cell
Volume17
Issue number6
DOIs
StatePublished - Dec 15 2009

All Science Journal Classification (ASJC) codes

  • Molecular Biology
  • General Biochemistry, Genetics and Molecular Biology
  • Developmental Biology
  • Cell Biology

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