Mechanisms of transcriptional precision in animal development

Mounia Lagha, Jacques P. Bothma, Michael Levine

Research output: Contribution to journalReview article

81 Scopus citations

Abstract

We review recently identified mechanisms of transcriptional control that ensure reliable and reproducible patterns of gene expression in natural populations of developing embryos, despite inherent fluctuations in gene regulatory processes, variations in genetic backgrounds and exposure to diverse environmental conditions. These mechanisms are not responsible for switching genes on and off. Instead, they control the fine-tuning of gene expression and ensure regulatory precision. Several such mechanisms are discussed, including redundant binding sites within transcriptional enhancers, shadow enhancers, and 'poised' enhancers and promoters, as well as the role of 'redundant' gene interactions within regulatory networks. We propose that such regulatory mechanisms provide population fitness and 'fine-tune' the spatial and temporal control of gene expression.

Original languageEnglish (US)
Pages (from-to)409-416
Number of pages8
JournalTrends in Genetics
Volume28
Issue number8
DOIs
StatePublished - Aug 2012
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Genetics

Keywords

  • Enhancer
  • Gene regulatory networks
  • Paused polymerase
  • Pioneer factors
  • Robustness

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