Centre National de La Recherche Scientifique (CNRS), Laboratory MIVEGEC (CNRS IRD Uni Montpellier), Montpellier, France.
Centre for Microbiology and Environmental Systems Science, University of Vienna, Vienna, Austria.
Virol J. 2020 Oct 30;17(1):167. doi: 10.1186/s12985-020-01440-9.
BACKGROUND: Papillomaviruses (PVs) infecting artiodactyls are very diverse, and only second in number to PVs infecting primates. PVs associated to lesions in economically important ruminant species have been isolated from cattle and sheep. METHODS: Potential PV DNA from teat lesions of a Damascus goat was isolated, cloned and sequenced. The PV genome was analyzed using bioinformatics approaches to detect open reading frames and to predict potential features of encoded proteins as well as putative regulatory elements. Sequence comparison and phylogenetic analyses using the concatenated E1E2L2L1 nucleotide and amino acid alignments was used to reveal the relationship of the new PV to the known PV diversity and its closest relevants. RESULTS: We isolated and characterized the full-genome of novel Capra hircus papillomavirus. We identified the E6, E7, E1, E2, L2, L1 open reading frames with protein coding potential and putative active elements in the ChPV2 proteins and putative regulatory genome elements. Sequence similarities of L1 and phylogenetic analyses using concatenated E1E2L2L1 nucleotide and amino acid alignments suggest the classification as a new PV type designated ChPV2 with a phylogenetic position within the XiPV genus, basal to the XiPV1 species. ChPV2 is not closely related to ChPV1, the other known goat PV isolated from healthy skin, although both of them belong confidently into a clade composed of PVs infecting cervids and bovids. Interestingly, ChPV2 contains an E6 open reading frame whereas all closely related PVs do not CONCLUSION: ChPV2 is a novel goat PV closely related to the Xi-PV1 species infecting bovines. Phylogenetic relationships and genome architecture of ChPV2 and closely related PV types suggest at least two independent E6 losses within the XiPV clade.
背景:感染偶蹄动物的乳头瘤病毒(PVs)非常多样化,数量仅次于感染灵长类动物的 PVs。已从牛和羊中分离出与经济上重要的反刍动物种属的病变相关的 PVs。
方法:从一只大马士革山羊的乳头发病部位分离、克隆并测序潜在的 PV DNA。使用生物信息学方法分析 PV 基因组,以检测开放阅读框,并预测编码蛋白的潜在特征以及推定的调控元件。使用串联 E1E2L2L1 核苷酸和氨基酸比对进行序列比较和系统发育分析,以揭示新的 PV 与已知的 PV 多样性及其最接近的亲缘关系。
结果:我们分离并鉴定了新型绵羊乳头瘤病毒的全基因组。我们在 ChPV2 蛋白中鉴定了 E6、E7、E1、E2、L2、L1 开放阅读框和具有蛋白质编码潜力的推定活性元件以及推定的调控基因组元件。L1 序列相似性和使用串联 E1E2L2L1 核苷酸和氨基酸比对进行的系统发育分析表明,该病毒被分类为一种新的 PV 类型,命名为 ChPV2,在 XiPV 属内处于 XiPV1 种的基础位置。ChPV2 与另一种从健康皮肤中分离出的已知山羊 PV(ChPV1)没有密切关系,尽管它们都属于一个由感染鹿和牛的 PV 组成的分支。有趣的是,ChPV2 含有 E6 开放阅读框,而所有密切相关的 PV 都没有。
结论:ChPV2 是一种新型的山羊 PV,与感染牛的 Xi-PV1 种密切相关。ChPV2 和密切相关的 PV 类型的系统发育关系和基因组结构表明,在 XiPV 分支中至少发生了两次独立的 E6 缺失。
J Gen Virol. 2010-11-17
Front Vet Sci. 2021-11-22
Front Vet Sci. 2021-11-2
Genome Biol Evol. 2019-6-1
Philos Trans R Soc Lond B Biol Sci. 2019-5-27
Virulence. 2015
Evol Med Public Health. 2015-1-28
Bioinformatics. 2014-1-21