Journal
MICROBIOLOGICAL RESEARCH
Volume 275, Issue -, Pages -Publisher
ELSEVIER GMBH
DOI: 10.1016/j.micres.2023.127466
Keywords
Mycobacterium tuberculosis; Host directed therapeutics; Innate and Adaptive Immunity; Granuloma; Autophagy
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Tuberculosis (TB) is a highly contagious bacterial infection caused by Mycobacterium tuberculosis (Mtb), and it ranks as the second leading cause of death worldwide from a single infectious agent. Mtb has adapted to the phagocytic host microenvironment, influencing various host processes and attenuating host cellular processes for its survival. Recent research has identified specific host genes and mechanisms involved in the intracellular entry and stabilization of M. tuberculosis, providing new possibilities for host-directed therapeutics (HDT). This review discusses the host-pathogen interaction for Mtb, including the pathways adapted by Mtb to escape immunity, and explores different HDTs such as repurposed drugs and vitamins.
Tuberculosis (TB) is a highly contagious bacterial infection caused by Mycobacterium tuberculosis (Mtb), which has been ranked as the second leading cause of death worldwide from a single infectious agent. As an intracellular pathogen, Mtb has well adapted to the phagocytic host microenvironment, influencing diverse host processes such as gene expression, trafficking, metabolism, and signaling pathways of the host to its advantage. These responses are the result of dynamic interactions of the bacteria with the host cell signaling pathways, whereby the bacteria attenuate the host cellular processes for their survival. Specific host genes and the mechanisms involved in the entry and subsequent stabilization of M. tuberculosis intracellularly have been identified in various genetic and chemical screens recently. The present understanding of the co-evolution of Mtb and macrophage system presented us the new possibilities for exploring host-directed therapeutics (HDT). Here, we discuss the host-pathogen interaction for Mtb, including the pathways adapted by Mtb to escape immunity. The review sheds light on different host-directed therapies (HDTs) such as repurposed drugs and vitamins, along with their targets such as granuloma, autophagy, extracellular matrix, lipids, and cytokines, among others. The article also examines the available clinical data on these drug molecules. In conclusion, the review presents a perspective on the current knowledge in the field of HDTs and the need for additional research to overcome the challenges associated HDTs.
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