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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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HIF-1alpha expression regulates the bactericidal capacity of phagocytes.

Hypoxia is a characteristic feature of the tissue microenvironment during bacterial infection. Here we report on our use of conditional gene targeting to examine the contribution of hypoxia-inducible factor 1, alpha subunit (HIF-1alpha) to myeloid cell innate immune function. HIF-1alpha was induced by bacterial infection, even under normoxia, and regulated the production of key immune effector molecules, including granule proteases, antimicrobial peptides, nitric oxide, and TNF-alpha. Mice lacking HIF-1alpha in their myeloid cell lineage showed decreased bactericidal activity and failed to restrict systemic spread of infection from an initial tissue focus. Conversely, activation of the HIF-1alpha pathway through deletion of von Hippel-Lindau tumor-suppressor protein or pharmacologic inducers supported myeloid cell production of defense factors and improved bactericidal capacity. HIF-1alpha control of myeloid cell activity in infected tissues could represent a novel therapeutic target for enhancing host defense.[1]

References

  1. HIF-1alpha expression regulates the bactericidal capacity of phagocytes. Peyssonnaux, C., Datta, V., Cramer, T., Doedens, A., Theodorakis, E.A., Gallo, R.L., Hurtado-Ziola, N., Nizet, V., Johnson, R.S. J. Clin. Invest. (2005) [Pubmed]
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