TAK1 regulates NF-ΚB and AP-1 activation in airway epithelial cells following RSV infection.

TAK1 regulates NF-ΚB and AP-1 activation in airway epithelial cells following RSV infection.
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TAK1调节RSV感染后气道上皮细胞中的NF-κB和AP-1激活。

DOI:
10.1016/j.virol.2011.07.007
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发表时间:
2011-09-30
期刊:
影响因子:
3.7
通讯作者:
Casola A
Casola A
中科院分区:
医学3区
文献类型:
--
作者:
Dey N;Liu T;Garofalo RP;Casola A

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呼吸道合胞病毒(RSV)是婴幼儿流行性呼吸道疾病最常见的病原。呼吸道上皮细胞的RSV感染通过激活一组转录因子(包括核因子-κB(NF-κB)和AP-1)诱导免疫/炎症基因的表达。在这项研究中,我们研究了导致这两个转录因子激活的信号通路,以响应RSV感染。我们的研究结果表明,IKKβ在病毒诱导的NF-κB活化中起关键作用,而JNK调节AP-1依赖的基因转录,这一点通过使用激酶失活蛋白和两种激酶的化学抑制剂来证明。通过过表达激酶失活的TAK 1或使用缺乏TAK 1表达的细胞抑制TAK 1活化,显著降低了RSV诱导的NF-κB和AP-1核转位和DNA结合活性,以及NF-κ B依赖性基因表达,确定TAK 1是调节RSV诱导的NF-κB和AP-1活化的重要上游信号分子。
Respiratory syncytial virus (RSV) is the most common cause of epidemic respiratory diseases in infants and young children. RSV infection of airway epithelial cells induces the expression of immune/inflammatory genes through the activation of a subset of transcription factors, including Nuclear Factor-κB (NF-κB) and AP-1. In this study, we have investigated the signaling pathway leading to activation of these two transcription factors in response to RSV infection. Our results show that IKKβ plays a key role in viral-induced NF-κB activation, while JNK regulates AP-1-dependent gene transcription, as demonstrated by using kinase inactive proteins and chemical inhibitors of the two kinases. Inhibition of TAK1 activation, by overexpression of kinase inactive TAK1 or using cells lacking TAK1 expression, significantly reduced RSV-induced NF-κB and AP-1 nuclear translocation and DNA-binding activity, as well as NF-κB-dependent gene expression, identifying TAK1 as an important upstream signaling molecule regulating RSV-induced NF-κB and AP-1 activation.
DOI: 10.1016/s0962-8924(00)01729-3
发表时间: 2000-04-01
影响因子: 19
作者:
Israël, A
通讯作者: Israël, A
DOI: 10.1089/088318701753436880
发表时间: 2001-01-01
期刊: Pediatric Asthma Allergy and Immunology
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发表时间: 2006-11-01
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发表时间: 2005-07-01
影响因子: 5.4
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DOI: 10.1165/ajrcmb.23.5.f204
发表时间: 2000-11-01
影响因子: 6.4
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