Downregulation of IRF4 induces lytic reactivation of KSHV in primary effusion lymphoma cells.

Downregulation of IRF4 induces lytic reactivation of KSHV in primary effusion lymphoma cells.
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DOI:
10.1016/j.virol.2014.04.020
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发表时间:
2014-06
期刊:
影响因子:
3.7
通讯作者:
Sarkar, Saumendra N.
Sarkar, Saumendra N.
中科院分区:
医学3区
文献类型:
--
作者:
Forero, Adriana;McCormick, Kevin D.;Jenkins, Frank J.;Sarkar, Saumendra N.

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与KSHV潜伏感染相关的原发性渗出性淋巴瘤(PEL)组成性表达干扰素调节因子4(IRF4)。我们最近发现,IRF4差异调节细胞干扰素刺激基因(ISGs)和病毒基因的表达。在这里,使用诱导型IRF4敲低,我们证明IRF4沉默导致KSHV复制反式激活因子RTA的转录增强。结果,病毒转录增加,导致病毒再活化。总之,我们的结果表明,IRF4有助于维持PEL细胞中潜伏期和KSHV再激活之间的平衡。
Primary effusion lymphoma (PEL), associated with the latent infection by KSHV, constitutively expresses interferon-regulatory factor 4 (IRF4). We recently showed that IRF4 differentially regulates expression of cellular interferon-stimulated genes (ISGs) and viral genes. Here, using inducible IRF4 knockdown, we demonstrate that IRF4 silencing results in enhanced transcription of KSHV replication transactivator RTA. As a result viral transcription is increased leading to virus reactivation. Taken together, our results show that IRF4 helps maintain the balance between latency and KSHV reactivation in PEL cells.
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