The cysteinyl leukotriene 3 receptor regulates expansion of IL-25-producing airway brush cells leading to type 2 inflammation.

The cysteinyl leukotriene 3 receptor regulates expansion of IL-25-producing airway brush cells leading to type 2 inflammation.
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DOI:
10.1126/sciimmunol.aat9453
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发表时间:
2018-10-05
期刊:
影响因子:
24.8
通讯作者:
Barrett NA
Barrett NA
中科院分区:
医学1区
文献类型:
--
作者:
Bankova LG;Dwyer DF;Yoshimoto E;Ualiyeva S;McGinty JW;Raff H;von Moltke J;Kanaoka Y;Frank Austen K;Barrett NA

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呼吸道上皮细胞(EpCs)协调气道粘膜炎症反应的各种环境刺激,但如何不同的EpC程序的调节仍然知之甚少。在这里,我们报告吸入空气过敏原导致气道刷状细胞(BrCs)的扩张,专门的化学感觉EpCs和白细胞介素-25(IL-25)的主要上皮来源。BrC扩增在缺乏LTC 4合酶(半胱氨酰白三烯(CysLT)生成所需的生物合成酶)或白三烯E4(LTE 4)的EpC受体(CysLT 3R)的小鼠中减弱。LTE 4吸入足以通过IL-25依赖性但STAT 6非依赖性信号传导途径引起小鼠气道中CysLT 3R依赖性BrC扩增。最后,IL-25的阻断减弱了空气变应原和LTE 4引起的CysLT 3R依赖性2型肺部炎症。这些结果表明,CysLT 3R传感内源性产生的脂质配体LTE 4和调节气道BrC的数量和功能。
Respiratory epithelial cells (EpCs) orchestrate airway mucosal inflammation in response to diverse environmental stimuli, but how distinct EpC programs are regulated remains poorly understood. Here, we report that inhalation of aeroallergens leads to expansion of airway brush cells (BrCs), specialized chemosensory EpCs and the dominant epithelial source of interleukin-25 (IL-25). BrC expansion was attenuated in mice lacking either LTC4 synthase, the biosynthetic enzyme required for cysteinyl leukotriene (CysLT) generation, or the EpC receptor for leukotriene E4 (LTE4), CysLT3R. LTE4 inhalation was sufficient to elicit CysLT3R-dependent BrC expansion in the murine airway through an IL-25–dependent but STAT6-independent signaling pathway. Last, blockade of IL-25 attenuated both aeroallergen and LTE4-elicited CysLT3R-dependent type 2 lung inflammation. These results demonstrate that CysLT3R senses the endogenously generated lipid ligand LTE4 and regulates airway BrC number and function.
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