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Mycobacterium tuberculosis Infection-Driven Foamy Macrophages and Their Implications in Tuberculosis Control as Targets for Host-Directed Therapy

Authors
 Dahee Shim  ;  Hagyu Kim  ;  Sung Jae Shin 
Citation
 FRONTIERS IN IMMUNOLOGY, Vol.11 : 910, 2020-05 
Journal Title
 FRONTIERS IN IMMUNOLOGY 
Issue Date
2020-05
Keywords
Mycobacterium tuberculosis ; foamy macrophage ; host-directed therapy ; immune responses ; lipid metabolism ; lung inflammation ; tuberculosis
Abstract
Tuberculosis (TB) is a leading cause of death worldwide following infection with Mycobacterium tuberculosis (Mtb), with 1.5 million deaths from this disease reported in 2018. Once the bacilli are inhaled, alveolar and interstitial macrophages become infected with Mtb and differentiate into lipid-laden foamy macrophages leading to lung inflammation. Thus, the presence of lipid-laden foamy macrophages is the hallmark of TB granuloma; these Mtb-infected foamy macrophages are the major niche for Mtb survival. The fate of TB pathogenesis is likely determined by the altered function of Mtb-infected macrophages, which initiate and mediate TB-related lung inflammation. As Mtb-infected foamy macrophages play central roles in the pathogenesis of Mtb, they may be important in the development of host-directed therapy against TB. Here, we summarize and discuss the current understanding of the alterations in alveolar and interstitial macrophages in the regulation of Mtb infection-induced immune responses. Metabolic reprogramming of lipid-laden foamy macrophages following Mtb infection or virulence factors are also summarized. Furthermore, we review the therapeutic interventions targeting immune responses and metabolic pathways, from in vitro, in vivo, and clinical studies. This review will further our understanding of the Mtb-infected foamy macrophages, which are both the major Mtb niche and therapeutic targets against TB.
Files in This Item:
T202002340.pdf Download
DOI
10.3389/fimmu.2020.00910
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Microbiology (미생물학교실) > 1. Journal Papers
Yonsei Authors
Shin, Sung Jae(신성재) ORCID logo https://orcid.org/0000-0003-0854-4582
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/179215
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