Deletion of PPARγ in lung macrophages provides an immunoprotective response against M. tuberculosis infection in mice.
Deletion of PPARγ in lung macrophages provides an immunoprotective response against M. tuberculosis infection in mice.
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肺巨噬细胞中PPARγ的缺失提供了针对小鼠结核分枝杆菌感染的免疫保护反应。
DOI:
10.1016/j.tube.2018.06.012
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发表时间:
2018-07
期刊:
影响因子:
--
通讯作者:
Schlesinger LS
中科院分区:
文献类型:
--
作者:
Guirado E;Rajaram MV;Chawla A;Daigle J;La Perle KM;Arnett E;Turner J;Schlesinger LS
Peroxisome proliferator-activated receptor gamma (PPARγ) is a nuclear transcription factor belonging to the superfamily of ligand-activated nuclear receptors. It is activated by diverse endogenous lipid metabolites as well as by exogenous ligands such as the thiazolidinediones. Its activity regulates cellular metabolism, proliferation, differentiation, and inflammation, the latter in part through trans-repression of pro-inflammatory cytokines. PPARγ is highly expressed in alternatively activated alveolar macrophages (AMs), a primary host cell for airborne Mycobacterium tuberculosis (M.tb). Our previous in vitro study identified the importance of PPARγ activation through the mannose receptor (CD206) on human macrophages in enabling M.tb growth. The aim of the current study was to investigate the role of PPARγ in vivo during M.tb infection using a macrophage-specific PPARγ knock out mouse model with special emphasis on the lung environment. Our data show that the absence of PPARγ in lung macrophages reduces the growth of virulent M.tb, enhances pro-inflammatory cytokines and reduces granulomatous infiltration. These findings demonstrate that PPARγ activation, which down-regulates macrophage pro-inflammatory responses, impacts the lung’s response to M.tb infection, thereby supporting PPARγ’s role in tuberculosis (TB) pathogenesis.
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DOI:
10.4049/jimmunol.1000866
发表时间:
2010-07-15
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Rajaram MV;Brooks MN;Morris JD;Torrelles JB;Azad AK;Schlesinger LS
通讯作者:
Schlesinger LS
DOI:
10.1073/pnas.0904846106
发表时间:
2009-07-07
影响因子:
11.1
作者:
Day, Judy;Friedman, Avner;Schlesinger, Larry S.
通讯作者:
Schlesinger, Larry S.
影响因子:
64.8
作者:
Jiang, CY;Ting, AT;Seed, B
通讯作者:
Seed, B
影响因子:
82.9
作者:
通讯作者:
--
影响因子:
4.4
作者:
Mahajan, Sahil;Dkhar, H. Kitdorlang;Gupta, Pawan
通讯作者:
Gupta, Pawan