Hypoxia-induced and stress-specific changes in chromatin structure and function

Amber Buescher Johnson, Michelle Craig Barton

Research output: Contribution to journalArticlepeer-review

69 Scopus citations

Abstract

Cellular adaptation to stress relies on specific, regulated responses to evoke changes in gene expression. Stresses such as hypoxia, heat shock, oxidative stress and DNA-damage activate signaling cascades that ultimately lead to either induction or repression of stress-responsive genes. In this review, we concentrate on the mechanisms by which stress-induced signaling promotes alterations in chromatin structure, whether the read-out is activation or repression of transcription. Specific alterations in chromatin are highly regulated and dictated by the type of imposed stress. Our primary focus is on the types of chromatin alterations that occur under hypoxic conditions, which exist within a majority of tumors, and to compare these to changes in chromatin structure that occur in response to a wide variety of cellular stresses.

Original languageEnglish (US)
Pages (from-to)149-162
Number of pages14
JournalMutation Research - Fundamental and Molecular Mechanisms of Mutagenesis
Volume618
Issue number1-2
DOIs
StatePublished - May 1 2007
Externally publishedYes

Keywords

  • Cellular stress
  • Chromatin structure
  • Hypoxia
  • Oxidative stress

ASJC Scopus subject areas

  • Molecular Biology
  • Genetics
  • Health, Toxicology and Mutagenesis

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