期刊
JOURNAL OF IMMUNOLOGY
卷 173, 期 4, 页码 2571-2577出版社
AMER ASSOC IMMUNOLOGISTS
DOI: 10.4049/jimmunol.173.4.2571
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The AP-1 complex is composed of c-Jun and c-Fos and is a key component in the regulation of proinflammatory genes. Mast cells play a significant role in the initiation of many inflammatory responses, such as allergy and allergy-associated diseases. In the present work, we characterized the role of c-Fos in mast cell function by investigating IL-3-dependent cell proliferation, degranulation capability, and cytokine expression in c-Fos-deficient mice. In c-Fos-deficient mast cells, we found that FcepsilonRI-mediated degranulation was significantly inhibited, which correlates with the reduced expression of SWAP-70, VAMP-7, and Synaptotagmin I genes, which are involved directly in the degranulation process. These findings show that c-Fos plays an important role in FcepsilonRI-mediated regulation of mast cell function.
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