Host sirtuin 1 regulates mycobacterial immunopathogenesis and represents a therapeutic target against tuberculosis.

ABSTRACT: Mycobacterium tuberculosis (Mtb) executes a plethora of immune-evasive mechanisms, which contribute to its pathogenesis, limited efficacy of current therapy, and the emergence of drug-resistant strains. This has led to resurgence in attempts to develop new therapeutic strategies/targets against tuberculosis (TB). We show that Mtb down-regulates sirtuin 1 (SIRT1), a nicotinamide adenine dinucleotide (NAD⁺)-dependent deacetylase, in monocytes/macrophages, TB animal models, and TB patients with active disease. Activation of SIRT1 reduced intracellular growth of drug-susceptible and drug-resistant strains of Mtb and induced phagosome-lysosome fusion and autophagy in a SIRT1-dependent manner. SIRT1 activation dampened Mtb-mediated persistent inflamm

SUBMITTER: Cheng CY 

PROVIDER: S-EPMC5505666 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature