The epithelial cell-derived atopic dermatitis cytokine TSLP activates neurons to induce itch.

The epithelial cell-derived atopic dermatitis cytokine TSLP activates neurons to induce itch.
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上皮细胞来源的特应性皮炎细胞因子 TSLP 激活神经元以诱发瘙痒。

DOI:
10.1016/j.cell.2013.08.057
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发表时间:
2013-10-10
期刊:
影响因子:
64.5
通讯作者:
Bautista DM
Bautista DM
中科院分区:
生物学1区
文献类型:
--
作者:
Wilson SR;Thé L;Batia LM;Beattie K;Katibah GE;McClain SP;Pellegrino M;Estandian DM;Bautista DM

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特应性皮炎(AD)是一种慢性瘙痒和炎症性皮肤疾病,影响十分之一的人。患有严重AD的患者最终发展为哮喘和过敏性鼻炎,这一过程被称为“特应性进行曲”。上皮细胞和先天性免疫细胞之间通过细胞因子胸腺基质细胞生成素(TSLP)的信号传导被认为是驱动AD和特应性进展的原因。在这里,我们报告上皮细胞直接沟通皮肤感觉神经元通过TSLP促进瘙痒。我们确定了ORAI 1/NFAT钙信号通路是角质形成细胞(皮肤的原代上皮细胞)释放TSLP的重要调节因子。然后,TSLP直接作用于TRPA 1阳性感觉神经元的子集,以触发强烈的瘙痒行为。我们的研究结果支持了一种新的模型,即角质形成细胞释放钙依赖性TSLP激活初级传入神经元和免疫细胞,以促进皮肤和气道的炎症反应。
Atopic dermatitis (AD) is a chronic itch and inflammatory disorder of the skin that affects one in ten people. Patients suffering from severe AD eventually progress to develop asthma and allergic rhinitis, in a process known as the “atopic march.” Signaling between epithelial cells and innate immune cells via the cytokine Thymic Stromal Lymphopoietin (TSLP) is thought to drive AD and the atopic march. Here we report that epithelial cells directly communicate to cutaneous sensory neurons via TSLP to promote itch. We identify the ORAI1/NFAT calcium signaling pathway as an essential regulator of TSLP release from keratinocytes, the primary epithelial cells of the skin. TSLP then acts directly on a subset of TRPA1-positive sensory neurons to trigger robust itch behaviors. Our results support a new model whereby calcium-dependent TSLP release by keratinocytes activates both primary afferent neurons and immune cells to promote inflammatory responses in the skin and airways.
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