title: New insights into cell non-autonomous mechanisms of the C. elegans hypoxic response.
abstract: The hypoxic response is a well-studied and highly conserved biological response to low oxygen availability. First described more than 20 y ago, the traditional model for this response is that declining oxygen levels lead to stabilization of hypoxia-inducible transcription factors (HIFs), which then bind to hypoxia responsive elements (HREs) in target genes to mediate the transcriptional changes collectively known as the hypoxic response.(1,2) Recent work in C. elegans has forced a re-evaluation of this model by indicating that the worm HIF (HIF-1) can mediate effects in a cell non-autonomous fashion and, in at least one case, increase expression of an intestinal hypoxic response target gene in cells lacking HIF-1.
authors.affiliation: Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI, USA; Division of Geriatric and Palliative Medicine, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA.
authors.forename: Scott F
authors.initials: SF
authors.lastname: Leiser
authors.affiliation: Department of Pathology, University of Washington , Seattle, WA, USA.
authors.forename: Ryan
authors.initials: R
authors.lastname: Rossner
authors.affiliation: Department of Pathology, University of Washington , Seattle, WA, USA.
authors.forename: Matt
authors.initials: M
authors.lastname: Kaeberlein
keywords: aging; flavin-containing monooxygenase; hypoxic signaling; longevity; serotonin