Spatiotemporal compartmentalization of key physiological processes during muscle precursor differentiation

Ertuǧrul M. Özbudak, Olivier Tassy, Olivier Pourquié

Research output: Contribution to journalArticle

29 Scopus citations

Abstract

The development of multicellular organisms is controlled by transcriptional networks. Understanding the role of these networks requires a full understanding of transcriptome regulation during embryogenesis. Several microarray studies have characterized the temporal evolution of the transcriptome during development in different organisms [Wang QT, et al. (2004) Dev Cell 6:133-144; Furlong EE, Andersen EC, Null B, White KP, Scott MP (2001) Science 293:1629-1633; Mitiku N, Baker JC (2007) Dev Cell 13:897-907]. In all cases, however, experiments were performed on whole embryos, thus averaging gene expression among many different tissues. Here, we took advantage of the local synchrony of the differentiation process in the paraxial mesoderm. This approach provides a unique opportunity to study the systems-level properties of muscle differentiation. Using high-resolution, spatiotemporal profiling of the early stages of muscle development in the zebrafish embryo, we identified a major reorganization of the transcriptome taking place in the presomitic mesoderm. We further show that the differentiation process is associated with a striking modular compartmentalization of the transcription of essential components of cellular physiological programs. Particularly, weidentify a tight segregation of cell cycle/DNA metabolic processes and translation/oxidative metabolism at the tissue level, highly reminiscent of the yeast metabolic cycle. These results should expand more investigations into the developmental control of metabolism.

Original languageEnglish (US)
Pages (from-to)4224-4229
Number of pages6
JournalProceedings of the National Academy of Sciences of the United States of America
Volume107
Issue number9
DOIs
StatePublished - Mar 2 2010

Keywords

  • Mesoderm
  • Metabolism
  • Stem cell
  • Transcription factors

ASJC Scopus subject areas

  • General

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