Hypoxia and senescence: The impact of oxygenation on tumor suppression

Scott M. Welford, Amato J. Giaccia

Research output: Contribution to journalReview articlepeer-review

64 Scopus citations


Cellular senescence has emerged as a biological response to two major pathophysiological states of our being: cancer and aging. In the course of the transformation of a normal cell to a cancerous cell, senescence is frequently induced to suppress tumor development. In aged individuals, senescence is found in cells that have exhausted their replication potential. The similarity in these responses suggests that understanding how senescence is mediated can provide insight into both cancer and aging. One environmental factor that is implicated in both of these states is tissue hypoxia, which increases with aging and can inhibit senescence. Hypoxia is particularly important in normal physiology to maintain the stem cell niche; but at the same time, hypoxic inhibition of an essential tumor suppressor response can theoretically contribute to cancer initiation.

Original languageEnglish (US)
Pages (from-to)538-544
Number of pages7
JournalMolecular Cancer Research
Issue number5
StatePublished - May 2011
Externally publishedYes

ASJC Scopus subject areas

  • Molecular Biology
  • Oncology
  • Cancer Research


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