JNK expression by macrophages promotes obesity-induced insulin resistance and inflammation.
JNK expression by macrophages promotes obesity-induced insulin resistance and inflammation.
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DOI:
10.1126/science.1227568
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发表时间:
2013-01-11
期刊:
影响因子:
--
通讯作者:
Davis RJ
中科院分区:
文献类型:
--
作者:
Han MS;Jung DY;Morel C;Lakhani SA;Kim JK;Flavell RA;Davis RJ
The cJun NH2-terminal kinase (JNK) signaling pathway contributes to inflammation and plays a key role in the metabolic response to obesity, including insulin resistance. Macrophages are implicated in this process. To test the role of JNK, we established mice with selective JNK-deficiency in macrophages. We report that feeding a high fat diet to control and JNK-deficient mice caused similar obesity, but only mice with JNK-deficient macrophages remained insulin sensitive. The protection of mice with macrophage-specific JNK-deficiency against insulin resistance was associated with reduced tissue infiltration by macrophages. Immunophenotyping demonstrated that JNK was required for pro-inflammatory macrophage polarization. These studies demonstrate that JNK in macrophages is required for the establishment of obesity-induced insulin resistance and inflammation.
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