Hypoxia-induced neutrophil survival is mediated by HIF-1 alpha-dependent NF-kappa B activity

Sarah Walmsley, C Print, N Farahi, C Peyssonnaux, RS Johnson, T Cramer, A Sobolewski, AM Condliffe, AS Cowburn, N Johnson, ER Chilvers*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

Neutrophils are key effector cells of the innate immune response and are required to migrate and function within adverse microenvironmental conditions. These inflammatory sites are characterized by low levels of oxygen and glucose and high levels of reductive metabolites. A major regulator of neutrophil functional longevity is the ability of these cells to undergo apoptosis. We examined the mechanism by which hypoxia causes an inhibition of neutrophil apoptosis in human and murine neutrophils. We show that neutrophils possess the hypoxia-inducible factor (HIF)-1alpha and factor inhibiting HIF (FIH) hydroxylase oxygen-sensing pathway and using HIF-1alpha-deficient myeloid cells demonstrate that HIF-1alpha is directly involved in regulating neutrophil survival in hypoxia. Gene array, TaqMan PCR, Western blotting, and oligonucleotide binding assays identify NF-kappaB as a novel hypoxia-regulated and HIF-dependent target, with inhibition of NF-kappaB by gliotoxin or parthenolide resulting in the abrogation of hypoxic survival. In addition, we identify macrophage inflammatory protein-1beta as a novel hypoxia-induced neutrophil survival factor.

Original languageEnglish
Pages (from-to)105-115
Number of pages11
JournalJournal of Experimental Medicine
Volume201
Issue number1
DOIs
Publication statusPublished - 3 Jan 2005

Keywords / Materials (for Non-textual outputs)

  • TUMOR-NECROSIS-FACTOR
  • GLYCERALDEHYDE-3-PHOSPHATE DEHYDROGENASE GENE
  • PROGRAMMED CELL-DEATH
  • FACTOR-ALPHA
  • INDUCIBLE FACTOR-1-ALPHA
  • CONSTITUTIVE APOPTOSIS
  • O-2 HOMEOSTASIS
  • HIF-ALPHA
  • EXPRESSION
  • PROTEIN

Fingerprint

Dive into the research topics of 'Hypoxia-induced neutrophil survival is mediated by HIF-1 alpha-dependent NF-kappa B activity'. Together they form a unique fingerprint.

Cite this