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首页> 外文期刊>Nature immunology >Pulmonary dendritic cells producing IL-10 mediate tolerance induced by respiratory exposure to antigen
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Pulmonary dendritic cells producing IL-10 mediate tolerance induced by respiratory exposure to antigen

机译:产生IL-10的肺树突状细胞介导呼吸暴露于抗原诱导的耐受性

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Respiratory exposure to allergen induces T cell tolerance and protection against the development of airway hyperreactivity and asthma. However, the specific mechanisms by which tolerance is induced by respiratory allergen are not clear. We report here that pulmonary dendritic cells (DCs) from mice exposed to respiratory antigen transiently produced interleukin 10 (IL-10). These phenotypically mature pulmonary DCs, which were B-7~(hi) as well as producing IL-10, stimulated the development of CD4~+T regulatory I-like cells that also produced high amounts of IL-10. In addition, adoptive transfer of pulmonary DCs from IL-10~(+/+), but not IL-10~(-/-), mice exposed to respiratory antigen induced antigen-specific unresponsiveness in recipient mice. These studies show that IL-10 production by DCs is critical for the induction of tolerance, and that phenotypically mature pulmonary DCs mediate tolerance induced by respiratory exposure to antigen.
机译:呼吸道接触过敏原会诱导T细胞耐受性,并保护其免受气道高反应性和哮喘的发展。但是,由呼吸道过敏原诱导耐受的具体机制尚不清楚。我们在这里报告,来自暴露于呼吸道抗原的小鼠的肺树突状细胞(DCs)瞬时产生白介素10(IL-10)。这些表型成熟的肺部DC为B-7〜(hi)并产生IL-10,刺激了CD4〜+ T调节性I样细胞的发育,该细胞也产生大量的IL-10。另外,暴露于呼吸道抗原的小鼠从IL-10〜(+ / +)而不是IL-10〜(-/-)通过肺DC的过继转移引起了受体小鼠的抗原特异性无反应性。这些研究表明,DC产生IL-10对于诱导耐受性至关重要,并且表型成熟的肺DC介导通过呼吸暴露于抗原诱导的耐受性。

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