Inhibition of Fatty Acid Oxidation Promotes Macrophage Control of Mycobacterium tuberculosis
Pallavi Chandra, Li He, Matthew Zimmerman, Guozhe Yang, Stefan Köster, Mireille Ouimet, Han Wang, Kathyrn J. Moore, Véronique Dartois, Joel D. Schilling, Jennifer A. Philips
Abstract
(Mtb) is the leading infectious disease killer worldwide. We discovered that intracellular Mtb fails to grow in macrophages in which fatty acid β-oxidation (FAO) is blocked. Macrophages treated with FAO inhibitors rapidly generate a burst of mitochondria-derived reactive oxygen species, which promotes NADPH oxidase recruitment and autophagy to limit the growth of Mtb. Furthermore, we demonstrate the ability of trimetazidine to reduce pathogen burden in mice infected with Mtb. These studies will add to the knowledge of how host metabolism modulates Mtb infection outcomes.