Interferon-λ enhances adaptive mucosal immunity by boosting release of thymic stromal lymphopoietin

Interferon-λ enhances adaptive mucosal immunity by boosting release of thymic stromal lymphopoietin
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干扰素-α 通过促进胸腺基质淋巴细胞生成素的释放来增强适应性粘膜免疫

DOI:
10.1038/s41590-019-0345-x
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发表时间:
2019
期刊:
影响因子:
30.5
通讯作者:
P. Staeheli
P. Staeheli
中科院分区:
医学1区
文献类型:
--
作者:
Schnepf;Becker;Tanriver;Bernasconi;Hartmann;P. Staeheli

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干扰素-λ(IFN-λ)作用于粘膜上皮细胞,从而提供直接的抗病毒保护。相比之下,IFN-λ在获得性免疫中的作用远不清楚。在这里,我们报告了IFN-λ信号转导缺陷的小鼠在感染减毒活流感病毒后表现出受损的CD 8 +T细胞和抗体应答。病毒诱导的IFN-λ释放触发上呼吸道M细胞合成胸腺基质淋巴细胞生成素(TSLP),进而刺激迁移性树突状细胞并增强引流淋巴结中的抗原依赖性生发中心反应。IFN-λ-TSLP轴还促进了流感病毒亚单位疫苗鼻内免疫后免疫球蛋白IgG 1和伊加的产生,并改善了强毒流感病毒攻击后小鼠的存活率。IFN-λ不影响通过皮下或腹膜内途径施用的疫苗的效力,表明IFN-λ在增强在粘膜表面起始的适应性免疫应答中起重要作用。
Interferon-λ (IFN-λ) acts on mucosal epithelial cells and thereby confers direct antiviral protection. In contrast, the role of IFN-λ in adaptive immunity is far less clear. Here, we report that mice deficient in IFN-λ signaling exhibited impaired CD8+T cell and antibody responses after infection with a live-attenuated influenza virus. Virus-induced release of IFN-λ triggered the synthesis of thymic stromal lymphopoietin (TSLP) by M cells in the upper airways that, in turn, stimulated migratory dendritic cells and boosted antigen-dependent germinal center reactions in draining lymph nodes. The IFN-λ–TSLP axis also boosted production of the immunoglobulins IgG1 and IgA after intranasal immunization with influenza virus subunit vaccines and improved survival of mice after challenge with virulent influenza viruses. IFN-λ did not influence the efficacy of vaccines applied by subcutaneous or intraperitoneal routes, indicating that IFN-λ plays a vital role in potentiating adaptive immune responses that initiate at mucosal surfaces.
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