Immunometabolism of Macrophages in Bacterial Infections

Frontiers in Cellular and Infection Microbiology

Gaël Galli¹  Maya Saleh² 

[1] University of Bordeaux, CNRS, ImmunoConcEpT, UMR 5164, Bordeaux, France;Department of Internal Medicine, CHU Bordeaux, Haut Leveque Hospital, Pessac, France;University of Bordeaux, CNRS, ImmunoConcEpT, UMR 5164, Bordeaux, France;Department of Medicine, McGill University, Montreal, QC, Canada;

关键词: innate immunity;    bacteria;    inflammation;    immunometabolism;    infection;   

DOI  :  10.3389/fcimb.2020.607650

来源: Frontiers

【 摘 要 】

Macrophages are important effectors of tissue homeostasis, inflammation and host defense. They are equipped with an arsenal of pattern recognition receptors (PRRs) necessary to sense microbial- or danger-associated molecular patterns (MAMPs/DAMPs) and elicit rapid energetically costly innate immunity responses to protect the organism. The interaction between cellular metabolism and macrophage innate immunity is however not limited to answering the cell’s energy demands. Mounting evidence now indicate that in response to bacterial sensing, macrophages undergo metabolic adaptations that contribute to the induction of innate immunity signaling and/or macrophage polarization. In particular, intermediates of the glycolysis pathway, the Tricarboxylic Acid (TCA) cycle, mitochondrial respiration, amino acid and lipid metabolism directly interact with and modulate macrophage effectors at the epigenetic, transcriptional and post-translational levels. Interestingly, some intracellular bacterial pathogens usurp macrophage metabolic pathways to attenuate anti-bacterial defenses. In this review, we highlight recent evidence describing such host-bacterial immunometabolic interactions.

【 授权许可】

CC BY