Substance P regulates memory Th17 cell generation and maintenance in chronic dry eye disease

效应器 炎症 生物 体内 细胞生物学 P物质 受体 敌手 速激肽受体1 体外 分泌物 细胞 免疫学 神经肽 内分泌学 生物化学 遗传学 生物技术
作者
Shudan Wang,Amirreza Naderi,Francesca Kahale,Gustavo Ortiz,Katayoon Forouzanfar,Yihe Chen,Reza Dana
出处
期刊:Journal of Leukocyte Biology [Wiley]
被引量:2
标识
DOI:10.1093/jleuko/qiae142
摘要

Abstract Substance P is a neuropeptide expressed by nerves and an array of cells that serves as a critical mediator of neuroinflammation. Our recent work has demonstrated that blocking the preferred receptor for substance P, neurokinin 1 receptor, effectively suppresses the induction of acute dry eye disease by preserving regulatory T-cell function, while inhibiting antigen-presenting cell maturation and subsequent generation of effector Th17 cells. Clinically, dry eye disease is a chronic disorder characterized by sustained ocular surface inflammation, which is mediated by long-lived memory Th17 cells demonstrated in our well-established chronic dry eye disease model. The present study aimed to further understand the function of substance P in the chronic phase of dry eye disease and its role in regulating the underlying pathogenic memory Th17. In vitro culture of effector T cells isolated from acute dry eye disease with substance P led to an enhanced conversion of effector Th17 to memory Th17, while culturing memory T cells isolated from chronic dry eye disease with substance P effectively preserved the memory Th17 cells. In contrast, the addition of a neurokinin 1 receptor antagonist in the cultures abolished the substance P–mediated effects. Furthermore, in vivo treatment with the neurokinin 1 receptor antagonist during the resolution phase of acute dry eye disease significantly suppressed memory Th17 generation, and treatment in the chronic phase of dry eye disease disrupted the maintenance of memory Th17. Taken together, our results demonstrate that increased expression of substance P promotes memory Th17 generation and maintenance in chronic dry eye disease, and thus blockade of substance P represents a novel promising memory Th17–targeting strategy in treating chronic ocular surface inflammation.

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