Human TLR-7-, -8-, and -9-mediated induction of IFN-alpha/beta and -lambda Is IRAK-4 dependent and redundant for protective immunity to viruses.

Human TLR-7-, -8-, and -9-mediated induction of IFN-alpha/beta and -lambda Is IRAK-4 dependent and redundant for protective immunity to viruses.
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DOI:
10.1016/j.immuni.2005.09.016
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发表时间:
2005-11
期刊:
影响因子:
32.4
通讯作者:
Casanova JL
Casanova JL
中科院分区:
医学1区
文献类型:
--
作者:
Yang K;Puel A;Zhang S;Eidenschenk C;Ku CL;Casrouge A;Picard C;von Bernuth H;Senechal B;Plancoulaine S;Al-Hajjar S;Al-Ghonaium A;Maródi L;Davidson D;Speert D;Roifman C;Garty BZ;Ozinsky A;Barrat FJ;Coffman RL;Miller RL;Li X;Lebon P;Rodriguez-Gallego C;Chapel H;Geissmann F;Jouanguy E;Casanova JL

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5种TLR被认为在抗病毒免疫、感知病毒产物和诱导IFN-α/β和-λ中起重要作用。令人惊讶的是,IRAK-4(TLR下游的一种关键激酶)缺陷的患者对常见病毒具有抗性。我们在此表明,在IRAK-4缺陷型血细胞中,通过TLR-7、TLR-8和TLR-9诱导的IFN-α/β和IFN-λ被消除。相反,TLR-3和TLR-4激动剂可正常诱导IFN-α/β和IFN-λ。此外,在IRAK-4缺陷型成纤维细胞中,TLR-3激动剂和病毒通常诱导IFN-β和IFN-λ。我们进一步表明,在IRAK-4缺陷型血细胞中,对11种病毒中的9种病毒的IFN-α/β和-λ产生是正常的或受到微弱影响。因此,IRAK-4缺陷型患者可通过TLR-3和TLR-4依赖性和/或TLR非依赖性IFN产生来控制病毒感染。IFN-α/β和IFN-λ的TLR-7-、TLR-8-和TLR-9依赖性诱导是严格依赖于IRAK-4的,并且对于人体中对大多数病毒的保护性免疫是矛盾的冗余。
Five TLRs are thought to play an important role in antiviral immunity, sensing viral products and inducing IFN-α/β and -λ. Surprisingly, patients with a defect of IRAK-4, a critical kinase downstream from TLRs, are resistant to common viruses. We show here that IFN-α/β and -λ induction via TLR-7, TLR-8, and TLR-9 was abolished in IRAK-4-deficient blood cells. In contrast, IFN-α/β and -λ were induced normally by TLR-3 and TLR-4 agonists. Moreover, IFN-β and -λ were normally induced by TLR-3 agonists and viruses in IRAK-4-deficient fibroblasts. We further show that IFN-α/β and -λ production in response to 9 of 11 viruses tested was normal or weakly affected in IRAK-4-deficient blood cells. Thus, IRAK-4-deficient patients may control viral infections by TLR-3- and TLR-4-dependent and/or TLR-independent production of IFNs. The TLR-7-, TLR-8-, and TLR-9-dependent induction of IFN-α/β and -λ is strictly IRAK-4 dependent and paradoxically redundant for protective immunity to most viruses in humans.
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影响因子: 30.8
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