一种在东南亚发现的新型蚊媒环状病毒。
A novel mosquito-borne Orbivirus species found in South-east Asia.
机构信息
Center for Infection and Immunity, Columbia University, New York, NY 10032, USA.
Department of Pathology, Center for Biodefense and Emerging Infectious Diseases, University of Texas Medical Branch, Galveston, TX 77555, USA.
出版信息
J Gen Virol. 2013 May;94(Pt 5):1051-1057. doi: 10.1099/vir.0.046748-0. Epub 2013 Jan 30.
Abstract
The genus Orbivirus of the family Reoviridae includes a genetically diverse group of dsRNA arthropod-borne viruses that infect a wide variety of animal species. Here, we report the complete genome and phylogenetic analysis of a novel orbivirus (IAn-66411 or Sathuvachari virus, SVIV) isolated in 1963 from starlings (Brahminy myna) collected in Vellore, Tamil Nadu, India. Comparative genetic analysis of the SVIV polymerase (VP1 protein), core protein (VP3) and outer core protein (VP7) confirmed that SVIV is most closely related to the mosquito-borne orbiviruses, but that it is equally divergent from all known species. Therefore, SVIV should be tentatively considered as the prototype of a novel mosquito-associated Orbivirus species. These findings will aid in the development of molecular reagents that can identify genetically similar orbiviruses and help elucidate their geographical distribution, epidemiology, species tropism and possible disease association.
摘要
呼肠孤病毒科的呼肠孤病毒属包括一组遗传上多样化的双链 RNA 节肢动物传播病毒，可感染多种动物物种。在这里，我们报告了一种新型呼肠孤病毒（IAn-66411 或 Sathuvachari 病毒，SVIV）的完整基因组和系统进化分析，该病毒于 1963 年从印度泰米尔纳德邦维洛尔收集的八哥（婆罗门八哥）中分离出来。对 SVIV 聚合酶（VP1 蛋白）、核心蛋白（VP3）和外壳蛋白（VP7）的比较遗传分析证实，SVIV 与蚊媒呼肠孤病毒最为密切相关，但与所有已知物种的差异也同样明显。因此，SVIV 应暂时被视为一种新型与蚊子相关的呼肠孤病毒属的原型。这些发现将有助于开发能够识别遗传上相似的呼肠孤病毒的分子试剂，并有助于阐明它们的地理分布、流行病学、物种嗜性和可能的疾病关联。
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