TGR5 deficiency activates antitumor immunity in non-small cell lung cancer via restraining M2 macrophage polarization.
TGR5 deficiency activates antitumor immunity in non-small cell lung cancer via restraining M2 macrophage polarization.
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TGR5缺陷通过抑制M2巨噬细胞极化激活非小细胞肺癌的抗肿瘤免疫
DOI:
10.1016/j.apsb.2021.07.011
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发表时间:
2022-03
期刊:
影响因子:
--
通讯作者:
Jiang H
中科院分区:
文献类型:
--
作者:
Zhao L;Zhang H;Liu X;Xue S;Chen D;Zou J;Jiang H
The bile acid-responsive G-protein-coupled receptor TGR5 is expressed in monocytes and macrophages, and plays a critical role in regulating inflammatory response. Our previous work has shown its role in promoting the progression of non-small cell lung cancer (NSCLC), yet the mechanism remains unclear. Here, using Tgr5-knockout mice, we show that TGR5 is required for M2 polarization of tumor-associated macrophages (TAMs) and suppresses antitumor immunity in NSCLC via involving TAMs-mediated CD8+ T cell suppression. Mechanistically, we demonstrate that TGR5 promotes TAMs into protumorigenic M2-like phenotypes via activating cAMP-STAT3/STAT6 signaling. Induction of cAMP production restores M2-like phenotypes in TGR5-deficient macrophages. In NSCLC tissues from human patients, the expression of TGR5 is associated with the infiltration of TAMs. The co-expression of TGR5 and high TAMs infiltration are associated with the prognosis and overall survival of NSCLC patients. Together, this study provides molecular mechanisms for the protumor function of TGR5 in NSCLC, highlighting its potential as a target for TAMs-centric immunotherapy in NSCLC. TGR5 plays a key role in eliciting macrophage immunosuppressive phenotype and inhibiting antitumor immune response via involving TAMs-mediated tumor growth and CD8+ T cell suppression in non-small cell lung cancer.
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DOI:
10.1038/nrclinonc.2016.217
发表时间:
2017-07
期刊:
Nature reviews. Clinical oncology
影响因子:
--
作者:
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期刊:
Science (New York, N.Y.)
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