Molecular characterization of human parvovirus B19 genotypes 2 and 3.

Molecular characterization of human parvovirus B19 genotypes 2 and 3.
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人细节病毒B19基因型2和3的分子表征。

DOI:
10.1016/j.virol.2009.08.044
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发表时间:
2009-11-25
期刊:
影响因子:
3.7
通讯作者:
Qiu, Jianming
Qiu, Jianming
中科院分区:
医学3区
文献类型:
--
作者:
Chen, Zhaojun;Guan, Wuxiang;Cheng, Fang;Chen, Aaron Yun;Qiu, Jianming

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我们已经表征了细小病毒B19(B19 V)基因型-2 A6和基因型-3 V9变体的转录谱。在B19 V非允许性和允许性细胞中,A6 RNA谱与原型B19 V的RNA谱不同,而在这些细胞中V9 RNA的总体谱与原型相似。我们已经确定的一个独特特征是基因型-2 A6变体仅使用一个剪接受体来去除第一内含子。我们还证明了原型B19 V的反向末端重复序列(ITR)支持V9基因组的复制,该基因组在B19 V允许的细胞中产生感染性病毒,但不支持A6基因组的复制。与原型B19 V大非结构蛋白(NS 1)的促凋亡性质类似,A6和V9 NS 1蛋白也是B19 V-容许细胞中凋亡的有效诱导剂。
We have characterized the transcription profiles of parvovirus B19 (B19V) genotype-2 A6 and genotype-3 V9 variants. The A6 RNA profile differs from that of the prototype B19V in both B19V non-permissive and permissive cells, whereas the overall profile of the V9 RNA in these cells is similar to that of the prototype. A unique feature we have identified is that the genotype-2 A6 variant used only one splice acceptor to remove the first intron. We also demonstrated that the inverted terminal repeats (ITRs) of the prototype B19V support replication of the V9 genome, which produces infectious virus, but not that of the A6 genome, in B19V-permissive cells. Similar to the proapoptotic nature of the prototype B19V large non-structural protein (NS1), the A6 and V9 NS1 proteins also are potent inducers of apoptosis in B19V-permissive cells.
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