首页> 外文OA文献 >Characterization of a Novel Simian Immunodeficiency Virus from Guereza Colobus Monkeys (Colobus guereza) in Cameroon: a New Lineage in the Nonhuman Primate Lentivirus Family
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Characterization of a Novel Simian Immunodeficiency Virus from Guereza Colobus Monkeys (Colobus guereza) in Cameroon: a New Lineage in the Nonhuman Primate Lentivirus Family

机译:新型的猿猴免疫缺陷病毒的特征从喀麦隆的Guereza疣猴(Colobus guereza):非人类灵长类慢病毒家族的新谱系。

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摘要

Exploration of the diversity among primate lentiviruses is necessary to elucidate the origins and evolution of immunodeficiency viruses. During a serological survey in Cameroon, we screened 25 wild-born guereza colobus monkeys (Colobus guereza) and identified 7 with HIV/SIV cross-reactive antibodies. In this study, we describe a novel lentivirus, named SIVcol, prevalent in guereza colobus monkeys. Genetic analysis revealed that SIVcol was very distinct from all other known SIV/HIV isolates, with average amino acid identities of 40% for Gag, 50% for Pol, 28% for Env, and around 25% for proteins encoded by five other genes. Phylogenetic analyses confirmed that SIVcol is genetically distinct from other previously characterized primate lentiviruses and clusters independently, forming a novel lineage, the sixth in the current classification. Cercopithecidae monkeys (Old World monkeys) are subdivided into two subfamilies, the Colobinae and the Cercopithecinae, and, so far, all Cercopithecidae monkeys from which lentiviruses have been isolated belong to the Cercopithecinae subfamily. Therefore, SIVcol from guereza colobus monkeys (C. guereza) is the first primate lentivirus identified in the Colobinae subfamily and the divergence of SIVcol may reflect divergence of the host lineage.
机译:为了阐明免疫缺陷病毒的起源和进化,有必要探索灵长类慢病毒之间的多样性。在喀麦隆进行的一项血清学调查中,我们筛选了25只野生出生的guereza疣猴(Colobus guereza),并鉴定出7株具有HIV / SIV交叉反应抗体。在这项研究中,我们描述了一种新型的慢病毒,称为SIVcol,在guereza疣猴中很普遍。遗传分析表明,SIVcol与所有其他已知的SIV / HIV分离株非常不同,Gag的平均氨基酸同一性为40%,Pol为50%,Env为28%,其他五个基因编码的蛋白质约为25%。系统发育分析证实,SIVcol在遗传上与其他先前表征的灵长类慢病毒和簇独立,形成了新的谱系,在当前分类中排名第六。 Cercopithecidae猴子(旧世界的猴子)分为两个亚科,即Colobinae和Cercopithecinae,到目前为止,所有从中分离出慢病毒的Cercopithecidae猴子都属于Cercopithecinae亚科。因此,来自Gorreza疣猴(C. guereza)的SIVcol是在Colobinae亚科中鉴定的第一种灵长类慢病毒,SIVcol的差异可能反映了宿主谱系的差异。

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