IL-4 and IL-13 employ discrete signaling pathways for target gene expression in alternatively activated monocytes/macrophages.
IL-4 and IL-13 employ discrete signaling pathways for target gene expression in alternatively activated monocytes/macrophages.
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DOI:
10.1016/j.freeradbiomed.2012.10.553
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发表时间:
2013-01
影响因子:
7.4
通讯作者:
Cathcart, Martha K.
中科院分区:
文献类型:
--
作者:
Bhattacharjee, Ashish;Shukla, Meenakshi;Yakubenko, Valentin P.;Mulya, Anny;Kundu, Suman;Cathcart, Martha K.
Monocytes/macrophages are innate immune cells that play a crucial role in the resolution of inflammation. In presence of Th2 cytokines interleukin-4 (IL-4) and interleukin-13 (IL-13), they display an anti-inflammatory profile and this activation pathway is known as alternative activation. In this study we compare and differentiate pathways mediated by IL-4 and IL-13 activation of human monocytes/macrophage. Here we report differential regulation of IL-4 and IL-13 signaling in monocytes/macrophages starting from IL-4/IL-13 cytokine receptors to Jak-Stat-mediated signaling pathways that ultimately control expression of several infl1ammatory genes. Our data demonstrate that while the receptor-associated tyrosine kinases Jak2 and Tyk2 are activated after the recruitment of IL-13 to its receptor (containing IL-4Rα and IL-13Rα1), IL-4 stimulates Jak1 activation. We further show that Jak2 is upstream of Stat3 activation and Tyk2 controls Stat1 and Stat6 activation in response to IL-13 stimulation. In contrast, Jak1 regulates Stat3 and Stat6 activation in IL-4-induced monocytes. Our results further reveal that while IL-13 utilizes both IL-4Rα-Jak2-Stat3 and IL-13Rα1-Tyk2-Stat1/Stat6 signaling pathways, IL-4 can only use the IL-4Rα-Jak1-Stat3/Stat6 cascade to regulate the expression of some critical inflammatory genes including 15-lipoxygenase (15-LO), monoamine oxidase A (MAO-A) and scavenger receptor CD36. Moreover, we demonstrate here that IL-13 and IL-4 can uniquely affect the expression of particular genes like dual specificity phosphatase 1 (DUSP1) and tissue inhibitor of metalloprotease-3 (TIMP3) and do so through different Jak kinaes. As evidence of differential regulation of gene function by IL-4 and IL-13, we further report that MAO-A-mediated reactive oxygen species (ROS) generation is influenced by different Jak kinases. Collectively, these results have major implications for understanding the mechanism and function of alternatively activated monocytes/macrophages by IL-4 and IL-13 and add novel insights into the pathogenesis and potential treatment of different inflammatory diseases.
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DOI:
10.1016/j.bbamcr.2010.09.010
发表时间:
2011-07
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
Kaludercic N;Carpi A;Menabò R;Di Lisa F;Paolocci N
通讯作者:
Paolocci N
DOI:
10.4049/jimmunol.1000514
发表时间:
2010-11-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Bhattacharjee A;Mulya A;Pal S;Roy B;Feldman GM;Cathcart MK
通讯作者:
Cathcart MK
影响因子:
4.4
作者:
Bhattacharjee, Ashish;Xu, Bo;Cathcart, Martha K.
通讯作者:
Cathcart, Martha K.
影响因子:
3.8
作者:
Chaitidis, P;O'Donnell, V;Kühn, H
通讯作者:
Kühn, H
影响因子:
--
作者:
Joosten, LAB;Lubberts, E;vandenBerg, WB
通讯作者:
vandenBerg, WB