Discoidin domain receptor 1 promotes Th17 cell migration by activating the RhoA/ROCK/MAPK/ERK signaling pathway.

Discoidin domain receptor 1 promotes Th17 cell migration by activating the RhoA/ROCK/MAPK/ERK signaling pathway.
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DOI:
10.18632/oncotarget.10455
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发表时间:
2016-07-19
期刊:
影响因子:
--
通讯作者:
Aoudjit F
Aoudjit F
中科院分区:
其他
文献类型:
--
作者:
El Azreq MA;Kadiri M;Boisvert M;Pagé N;Tessier PA;Aoudjit F

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效应性T细胞在组织细胞外基质(ECM)中的迁移是获得性免疫反应和炎症性疾病发展的重要步骤。然而,这一过程中涉及的机制仍然知之甚少。在这项研究中,我们探讨了一种胶原受体--盘状结构域受体1(DDR1)在Th17细胞迁移中的作用。我们发现绝大多数人Th17细胞表达DDR1,沉默DDR1或使用阻断的重组受体DDR1:Fc显著降低了它们在三维(3D)胶原中的运动和侵袭能力。DDR1通过激活RhoA/ROCK和MAPK/ERK信号通路促进Th17迁移。有趣的是,RhoA/ROCK信号模块是MAPK/ERK激活所必需的。最后,我们证明了DDR1对于Th17细胞重新聚集到含有化学诱导剂CCL20的小鼠背部气囊中是重要的。总之,我们的结果表明,DDR1通过激活RhoA/ROCK/MAPK/ERK信号轴,是效应性T细胞通过血管周围组织的胶原蛋白迁移的关键途径。因此,DDR1可以促进Th17依赖型炎症性疾病的发展。
Effector T cell migration through the tissue extracellular matrix (ECM) is an important step of the adaptive immune response and in the development of inflammatory diseases. However, the mechanisms involved in this process are still poorly understood. In this study, we addressed the role of a collagen receptor, the discoidin domain receptor 1 (DDR1), in the migration of Th17 cells. We showed that the vast majority of human Th17 cells express DDR1 and that silencing DDR1 or using the blocking recombinant receptor DDR1:Fc significantly reduced their motility and invasion in three-dimensional (3D) collagen. DDR1 promoted Th17 migration by activating RhoA/ROCK and MAPK/ERK signaling pathways. Interestingly, the RhoA/ROCK signaling module was required for MAPK/ERK activation. Finally, we showed that DDR1 is important for the recruitment of Th17 cells into the mouse dorsal air pouch containing the chemoattractant CCL20. Collectively, our results indicate that DDR1, via the activation of RhoA/ROCK/MAPK/ERK signaling axis, is a key pathway of effector T cell migration through collagen of perivascular tissues. As such, DDR1 can contribute to the development of Th17-dependent inflammatory diseases.
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