HIF1α-dependent glycolysis promotes macrophage functional activities in protecting against bacterial and fungal infection

Scientific Reports
Chunxiao LiGuangwei Liu

Abstract

Macrophages are important innate immune defense system cells in the fight against bacterial and fungal pathogenic infections. They exhibit significant plasticity, particularly with their ability to undergo functional differentiation. Additionally, HIF1α is critically involved in the functional differentiation of macrophages during inflammation. However, the role of macrophage HIF1α in protecting against different pathogenic infections remains unclear. In this study, we investigated and compared the roles of HIF1α in different macrophage functional effects of bacterial and fungal infections in vitro and in vivo. We found that bacterial and fungal infections produced similar effects on macrophage functional differentiation. HIF1α deficiency inhibited pro-inflammatory macrophage functional activities when cells were stimulated with LPS or curdlan in vitro or when mice were infected with L. monocytogenes or C. albicans in vivo, thus decreasing pro-inflammatory TNFα and IL-6 secretion associated with pathogenic microorganism survival. Alteration of glycolytic pathway activation was required for the functional differentiation of pro-inflammatory macrophages in protecting against bacterial and fungal infections. Thus, the HIF1α-depend...Continue Reading

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Citations

Sep 21, 2018·Current Opinion in Lipidology·Lubna AliJeffrey Kroon
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Methods Mentioned

BETA
lavage
flow cytometry
PCR
ELISAs
ELISA

Software Mentioned

SDS
FlowJo

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