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1篇 您的检索式:作者名="Austin Hoggarth"
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1Lyn prevents aberrant inflammatory responses to Pseudomonas infection in mammalian systems by repressing a SHIP-1-associated signaling cluster显示文摘The pleiotropic Src kinase Lyn has critical roles in host defense in alveolar macrophages against bacterial infection,but the underlying mechanism for Lyn-mediated inflammatory response remains largely elusive.Using mouse Pseudomonas aeruginosa infection models,we observed that Lyn^(−/−)mice manifest severe lung injury and enhanced inflammatory responses,compared with wild-type littermates.We demonstrate that Lyn exerts this immune function through interaction with IL-6 receptor and cytoskeletal protein Ezrin via its SH2 and SH3 domains.Depletion of Lyn results in excessive STAT3 activation,and enhanced the Src homology 2-containing inositol-5-phopsphatase 1(SHIP-1)expression.Deletion of SHIP-1 in Lyn^(−/−)mice(double knockout)promotes mouse survival and reduces inflammatory responses during P.aeruginosa infection,revealing the rescue of the deadly infectious phenotype in Lyn deficiency.Mechanistically,loss of SHIP-1 reduces NF-κB-dependent cytokine production and dampens MAP kinase activation through a TLR4-independent PI3K/Akt pathway.These findings reveal Lyn as a regulator for host immune response against P.aeruginosa infection through SHIP-1 and IL-6/STAT3 signaling pathway in alveolar macrophages.Rongpeng Li Lizhu Fang Qinqin Pu Ping Lin Austin Hoggarth Huang Huang Xuefeng Li Guoping Li Min Wu 2016Signal Transduction and Targeted Therapy2016,1,1:1
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