Journal
SEMINARS IN CELL & DEVELOPMENTAL BIOLOGY
Volume 23, Issue 4, Pages 389-394Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.semcdb.2012.04.004
Keywords
Hypoxia; Inflammation; Metabolism; HIF; Tumor-associated macrophages
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Funding
- NHLBI NIH HHS [R01 HL066310] Funding Source: Medline
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Hypoxia-inducible factors (HIFs) are oxygen-sensitive transcription factors that allow adaptation to hypoxic environments. HIFs function in the cellular response to stress: metabolic, hypoxic, or inflammatory. Metabolic changes occur during tumorigenesis that are, in part, under hypoxia and HIF regulation. Additionally, inflammatory signaling and infiltration secondary to hypoxia are clear drivers of tumor progression. HIF-1 alpha and HIF-2 alpha have opposing and occasionally overlapping roles in both tumor cells and inflammatory cells within the tumor microenvironment and crosstalk between these populations has clear effects on tumor metabolism, inflammation, and progression. It is becoming increasingly apparent that HIFs are one common link between hypoxia, chronic inflammation, metabolic adaptation, and tumor progression through its function in macrophages during cancer development. (C) 2012 Elsevier Ltd. All rights reserved.
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