Respiratory virus-induced EGFR activation suppresses IRF1-dependent interferon λ and antiviral defense in airway epithelium.

Respiratory virus-induced EGFR activation suppresses IRF1-dependent interferon λ and antiviral defense in airway epithelium.
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DOI:
10.1084/jem.20121401
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发表时间:
2013-09-23
期刊:
The Journal of experimental medicine
影响因子:
--
通讯作者:
Koff JL
Koff JL
中科院分区:
其他
文献类型:
--
作者:
Ueki IF;Min-Oo G;Kalinowski A;Ballon-Landa E;Lanier LL;Nadel JA;Koff JL

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在病毒感染期间,表皮生长因子受体的抑制增加了irf1依赖性IFN-λ的产生并降低了病毒滴度。病毒抑制宿主反应以增加感染,了解这些机制为细胞信号传导提供了见解,并导致了新的治疗方法。许多病毒(如流感病毒、鼻病毒[RV]、巨细胞病毒、eb病毒和丙型肝炎病毒)激活酪氨酸激酶受体上皮表皮生长因子受体(EGFR),但EGFR在病毒发病机制中的作用尚不清楚。干扰素(IFN)信号是一个关键的先天抗病毒宿主反应,最近的实验表明,IFN-λ (III型IFN)是粘膜抗病毒免疫反应中最重要的IFN。尽管IFN-λ在上皮细胞抗病毒应答中很重要,但上皮细胞IFN-λ信号的作用和机制尚未完全阐明。我们报道呼吸道病毒诱导的EGFR激活抑制内源性气道上皮抗病毒信号。我们发现流感病毒和rv诱导的EGFR激活抑制IFN调节因子(IRF) 1诱导的IFN-λ产生并增加病毒感染。此外,在病毒感染期间,抑制EGFR增强了IRF1和IFN-λ,导致体外和体内病毒滴度下降。这些发现描述了一种病毒用来抑制内源性抗病毒防御的新机制,并为未来的治疗提供了潜在的靶点。
Inhibition of epidermal growth factor receptor during viral infection augments IRF1-dependent IFN-λ production and decreases viral titers. Viruses suppress host responses to increase infection, and understanding these mechanisms has provided insights into cellular signaling and led to novel therapies. Many viruses (e.g., Influenza virus, Rhinovirus [RV], Cytomegalovirus, Epstein-Barr virus, and Hepatitis C virus) activate epithelial epidermal growth factor receptor (EGFR), a tyrosine kinase receptor, but the role of EGFR in viral pathogenesis is not clear. Interferon (IFN) signaling is a critical innate antiviral host response and recent experiments have implicated IFN-λ, a type III IFN, as the most significant IFN for mucosal antiviral immune responses. Despite the importance of IFN-λ in epithelial antiviral responses, the role and mechanisms of epithelial IFN-λ signaling have not been fully elucidated. We report that respiratory virus-induced EGFR activation suppresses endogenous airway epithelial antiviral signaling. We found that Influenza virus– and RV-induced EGFR activation suppressed IFN regulatory factor (IRF) 1–induced IFN-λ production and increased viral infection. In addition, inhibition of EGFR during viral infection augmented IRF1 and IFN-λ, which resulted in decreased viral titers in vitro and in vivo. These findings describe a novel mechanism that viruses use to suppress endogenous antiviral defenses, and provide potential targets for future therapies.
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