Long non-coding RNA and epigenetic gene regulation of KSHV.

Long non-coding RNA and epigenetic gene regulation of KSHV.
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DOI:
10.3390/v6114165
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发表时间:
2014-11-04
期刊:
Viruses
影响因子:
--
通讯作者:
Izumiya Y
Izumiya Y
中科院分区:
其他
文献类型:
--
作者:
Campbell M;Kung HJ;Izumiya Y

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卡波西肉瘤相关疱疹病毒(KSHV/人类疱疹病毒8)是一种γ-疱疹病毒,与卡波西肉瘤(KS)和两种淋巴组织增生性疾病,原发性渗出性淋巴瘤(PEL或体腔B淋巴瘤[BCBL])和多中心Castleman病的子集有关。在裂解生长期间,广泛的病毒转录产生具有不确定蛋白质编码潜力的各种转录物,已在β-和γ-疱疹病毒的全基因组范围内进行了描述。一类这样的RNA被称为长非编码RNA(lncRNA)。KSHV编码一种病毒lncRNA,称为多聚腺苷酸化核RNA(PAN RNA),是一种丰富的早期基因产物。PAN RNA与KSHV基因表达、复制和免疫调节有关。PAN RNA表达是整个KSHV裂解基因表达程序的最佳表达所必需的。潜伏的KSHV附加体包被有病毒潜伏相关核抗原(拉娜)。在重新激活期间,拉娜迅速与附加体解离。在这里,我们回顾最近的研究表明,PAN RNA可能作为一种病毒lncRNA,包括在裂解复制过程中的LANA游离的促进作用。
Kaposi’s sarcoma-associated herpesvirus (KSHV/human herpesvirus 8) is a γ-herpesvirus linked to Kaposi’s sarcoma (KS) and two lymphoproliferative disorders, primary effusion lymphoma (PEL or body-cavity B-lymphoma [BCBL]) and a subset of Multicentric Castleman’s Disease. During lytic growth, pervasive viral transcription generating a variety of transcripts with uncertain protein-coding potential has been described on a genome-wide scale in β- and γ-herpesviruses. One class of such RNAs is called long non-coding RNAs (lncRNAs). KSHV encodes a viral lncRNA known as polyadenylated nuclear RNA (PAN RNA), a copious early gene product. PAN RNA has been implicated in KSHV gene expression, replication, and immune modulation. PAN RNA expression is required for optimal expression of the entire KSHV lytic gene expression program. Latent KSHV episomes are coated with viral latency-associated nuclear antigen (LANA). LANA rapidly dissociates from episomes during reactivation. Here we review recent studies suggesting that PAN RNA may function as a viral lncRNA, including a role in the facilitation of LANA-episomal dissociation during lytic replication.
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