Redox sensor CtBP mediates hypoxia-induced tumor cell migration

Qinghong Zhang, Su Yan Wang, Amanda C. Nottke, Jonathan V. Rocheleau, David W. Piston, Richard H. Goodman

Research output: Contribution to journalArticle

130 Scopus citations

Abstract

The rapid growth and poor vascularization of solid tumors expose cancer cells to hypoxia, which promotes the metastatic phenotype by reducing intercellular adhesion and increasing cell motility and invasiveness. In this study, we found that hypoxia increased free NADH levels in cancer cells, promoting CtBP recruitment to the E-cadherin promoter. This effect was blocked by pyruvate, which prevents the NADH increase. Furthermore, hypoxia repressed E-cadherin gene expression and increased tumor cell migration, effects that were blocked by CtBP knockdown. We propose that CtBP senses levels of free NADH to control expression of cell adhesion genes, thereby promoting tumor cell migration under hypoxic stress.

Original languageEnglish (US)
Pages (from-to)9029-9033
Number of pages5
JournalProceedings of the National Academy of Sciences of the United States of America
Volume103
Issue number24
DOIs
StatePublished - Jun 13 2006

Keywords

  • Adhesion
  • E-cadherin
  • HIF1α
  • Metastasis
  • NADH

ASJC Scopus subject areas

  • General

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