Cutting Edge: Lymphotoxin Signaling Is Essential for Clearance of Salmonella from the Gut Lumen and Generation of Anti-Salmonella Protective Immunity.

Cutting Edge: Lymphotoxin Signaling Is Essential for Clearance of Salmonella from the Gut Lumen and Generation of Anti-Salmonella Protective Immunity.
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DOI:
10.4049/jimmunol.1600867
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发表时间:
2017-01-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
通讯作者:
Fu YX
Fu YX
中科院分区:
其他
文献类型:
--
作者:
Wroblewska JA;Zhang Y;Tang H;Guo X;Nagler C;Fu YX

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The immunological components that control resolution of Salmonella infection and successful vaccination are poorly defined. In a model of chronic gastrointestinal infection, we observed that the lymphotoxin pathway is essential for the clearance and resolution of primary infection of attenuated Salmonella (S. Tmaten). Using gnotobiotic mice, we show that both LTβR signaling and the microbiota are required to promote clearance of S. Tmaten from the gut lumen. We also found that LTβR signaling was required for successful immunization and subsequent protection upon challenge with a virulent strain of S. Tm. LTβR signaling promoted the development of specific IgG recognizing S. Tm during infection, as well as antigen-driven IFN-γ responses. B cell and ILC3 derived Lymphotoxin (LT) signaling, but not T cell derived LT, contributes to anti-S. Tm protective responses. Collectively, our results suggest that lymphotoxin signaling by various immune is essential for multiple steps of anti-S. Tm immune responses.
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