Type III interferon is a critical regulator of innate antifungal immunity.

Type III interferon is a critical regulator of innate antifungal immunity.
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DOI:
10.1126/sciimmunol.aan5357
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发表时间:
2017-10-06
期刊:
影响因子:
24.8
通讯作者:
Rivera A
Rivera A
中科院分区:
医学1区
文献类型:
--
作者:
Espinosa V;Dutta O;McElrath C;Du P;Chang YJ;Cicciarelli B;Pitler A;Whitehead I;Obar JJ;Durbin JE;Kotenko SV;Rivera A

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III型干扰素(IFN-λs)是最近发现的IFN细胞因子家族的成员,并且与IFNLR 1和IL 10 R2受体亚基结合以激活针对病毒的先天性应答。我们已经确定IFN-λ是抗真菌中性粒细胞反应的关键指导者。使用烟曲霉(Af)作为模型来研究抗真菌免疫应答,我们发现CCR 2+单核细胞的耗竭损害了中性粒细胞控制侵袭性真菌生长的能力。使用无偏的方法,我们确定I型和III型IFN是单核细胞和中性粒细胞之间相互作用的关键调节因子,对Af作出反应。我们发现,CCR 2+单核细胞是I型IFN的重要早期来源,可促进IFN-λ的最佳表达。III型IFN直接作用于中性粒细胞以激活其抗真菌反应,并且IFNLR 1的嗜中性粒细胞特异性缺失的小鼠死于侵袭性曲霉病。通过过继转移肺CCR 2+单核细胞或外源性给予IFN-α和IFN-λ,可挽救CCR 2耗竭小鼠中功能失调的中性粒细胞应答。因此,CCR 2+单核细胞通过启动协调的IFN应答促进抗真菌中性粒细胞的最佳活化。我们已经确定III型IFN是中性粒细胞活化的关键调节剂,I型IFN是IFN-λ表达的早期刺激剂。
Type III interferons (IFN-λs) are the most recently found members of the IFN cytokine family and engage IFNLR1 and IL10R2 receptor subunits to activate innate responses against viruses. We have identified IFN-λs as critical instructors of antifungal neutrophil responses. Using Aspergillus fumigatus (Af) as a model to study antifungal immune responses, we found that depletion of CCR2+ monocytes compromised the ability of neutrophils to control invasive fungal growth. Using an unbiased approach, we identified type I and III IFNs as critical regulators of the interplay between monocytes and neutrophils responding to Af. We found that CCR2+ monocytes are an important early source of type I IFNs that prime optimal expression of IFN-λ. Type III IFNs act directly on neutrophils to activate their antifungal response, and mice with neutrophil-specific deletion of IFNLR1 succumb to invasive aspergillosis. Dysfunctional neutrophil responses in CCR2-depleted mice were rescued by adoptive transfer of pulmonary CCR2+ monocytes or by exogenous administration of IFN-α and IFN-λ. Thus, CCR2+ monocytes promote optimal activation of antifungal neutrophils by initiating a coordinated IFN response. We have identified type III IFNs as critical regulators of neutrophil activation and type I IFNs as early stimulators of IFN-λ expression.
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