Title |
TLR3 regulates mycobacterial RNA-induced IL-10 production through the PI3K/AKT signaling pathway
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Published in |
Cellular Signalling, January 2014
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DOI | 10.1016/j.cellsig.2014.01.015 |
Pubmed ID | |
Authors |
Wenjuan Bai, Haipeng Liu, Qun Ji, Yilong Zhou, Le Liang, Ruijuan Zheng, Jianxia Chen, Zhonghua Liu, Hong Yang, Peng Zhang, Stefan H.E. Kaufmann, Baoxue Ge |
Abstract |
Cytokine induction in response to Mycobacterium tuberculosis (Mtb) infection is critical for pathogen control, by (i) mediating innate immune effector functions and (ii) instructing specific adaptive immunity. IL-10 is an important anti-inflammatory cytokine involved in pathogenesis of tuberculosis (TB). Here, we show that TLR3, a sensor of extracellular viral or host RNA with stable stem structures derived from infected or damaged cells, is essential for Mtb-induced IL-10 production. Upon Mycobacterium bovis Bacillus Calmette-Guérin (BCG) infection, TLR3(-/-) macrophages expressed lower IL-10 but higher IL-12p40 production, accompanied by reduced phosphorylation of AKT at Ser473. BCG-infected TLR3(-/-) mice exhibited reduced IL-10 but elevated IL-12 expression compared to controls. Moreover, higher numbers of splenic Th1 cells and reduced pulmonary bacterial burden and tissue damage were observed in BCG-infected TLR3(-/-) mice. Finally, BCG RNA induced IL-10 in macrophages via TLR3-mediated activation of PI3K/AKT. Our findings demonstrate a critical role of TLR3-mediated regulation in the pathogenesis of mycobacterial infection involving mycobacterial RNA, which induces IL-10 through the PI3K/AKT signaling pathway. |
X Demographics
Geographical breakdown
Country | Count | As % |
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Unknown | 1 | 100% |
Demographic breakdown
Type | Count | As % |
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Members of the public | 1 | 100% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
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Spain | 1 | 2% |
United States | 1 | 2% |
France | 1 | 2% |
South Africa | 1 | 2% |
Unknown | 54 | 93% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 17 | 29% |
Student > Master | 8 | 14% |
Student > Doctoral Student | 7 | 12% |
Student > Bachelor | 5 | 9% |
Researcher | 3 | 5% |
Other | 7 | 12% |
Unknown | 11 | 19% |
Readers by discipline | Count | As % |
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Immunology and Microbiology | 13 | 22% |
Agricultural and Biological Sciences | 13 | 22% |
Biochemistry, Genetics and Molecular Biology | 7 | 12% |
Medicine and Dentistry | 5 | 9% |
Social Sciences | 2 | 3% |
Other | 6 | 10% |
Unknown | 12 | 21% |