MAP kinase phosphatase 2 deficient mice develop attenuated experimental autoimmune encephalomyelitis through regulating dendritic cells and T cells.

MAP kinase phosphatase 2 deficient mice develop attenuated experimental autoimmune encephalomyelitis through regulating dendritic cells and T cells.
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MAP激酶磷酸酶2不足的小鼠通过调节树突状细胞和T细胞形成了减弱的实验性自身免疫性脑脊髓炎。

DOI:
10.1038/srep38999
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发表时间:
2016-12-13
期刊:
影响因子:
4.6
通讯作者:
Jiang HR
Jiang HR
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Barbour M;Plevin R;Jiang HR

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丝裂原激活蛋白激酶磷酸酶 (MKP) 在炎症和免疫介导的疾病中发挥着关键作用。在这里,我们研究了 MKP-2 在实验性自身免疫性脑脊髓炎 (EAE) 中调节中枢神经系统 (CNS) 炎症的机制。我们的结果表明,与初始对照组相比,EAE 小鼠脊髓和淋巴器官中的 MKP-2 mRNA 水平增加,表明 MKP-2 在 EAE 发展中发挥重要作用。事实上,MKP-2−/− 小鼠 EAE 严重程度降低,与中枢神经系统免疫细胞浸润减少、促炎细胞因子产生减少以及脾和淋巴结中 CD4+ 和 CD8+ T 细胞频率降低有关。此外,与 MKP-2+/+ 小鼠相比,MKP-2−/− CD11c+ 树突状细胞 (DC) 的 MHC-II 和 CD40 表达减少。随后的实验表明,与野生型对照相比,来自幼稚 MKP-2−/− 小鼠的 CD4+ T 细胞的细胞增殖以及 IL-2 和 IL-17 的产生减少。此外,共培养实验表明,MKP-2−/− 小鼠骨髓来源的 DC 的抗原呈递和 T 细胞激活能力受损。虽然 MKP-2 也调节巨噬细胞活化,但我们的研究表明 MKP-2 对于 EAE 的致病反应至关重要,它主要通过调节重要的抗原呈递 DC 功能和 T 细胞活化发挥作用。
Mitogen-activated protein kinase phosphatases (MKPs) play key roles in inflammation and immune mediated diseases. Here we investigated the mechanisms by which MKP-2 modulates central nervous system (CNS) inflammation in experimental autoimmune encephalomyelitis (EAE). Our results show that MKP-2 mRNA levels in the spinal cord and lymphoid organs of EAE mice were increased compared with naive controls, indicating an important role for MKP-2 in EAE development. Indeed, MKP-2−/− mice developed reduced EAE severity, associated with diminished CNS immune cell infiltration, decreased proinflammatory cytokine production and reduced frequency of CD4+ and CD8+ T cells in spleens and lymph nodes. In addition, MKP-2−/− CD11c+ dendritic cells (DCs) had reduced expression of MHC-II and CD40 compared with MKP-2+/+ mice. Subsequent experiments revealed that CD4+ T cells from naïve MKP-2−/− mice had decreased cell proliferation and IL-2 and IL-17 production relative to wild type controls. Furthermore, co-culture experiments showed that bone marrow derived DCs of MKP-2−/− mice had impaired capability in antigen presentation and T cell activation. While MKP-2 also modulates macrophage activation, our study suggests that MKP-2 is essential to the pathogenic response of EAE, and it acts mainly via regulating the important antigen presenting DC function and T cell activation.
DOI: 10.1016/j.cyto.2014.08.007
发表时间: 2015-01
期刊: CYTOKINE
影响因子: 3.8
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发表时间: 2013-10-23
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