Multiple genotypes infection and molecular characterization of Torque teno neovison virus: A novel Anelloviridae of mink in China
文献类型: 外文期刊
第一作者: Xin, Weizhi
作者: Xin, Weizhi;Guo, Zhiyuan;Wang, Lin;Li, Yifan;Shangguan, Haikun;Xue, Kun;Yang, Hongliang;Ge, Junwei;Chen, Hongyan;Zhao, Lili;Zhao, Lili;Ge, Junwei
作者机构:
关键词: Torque teno virus; Co-infection; Genomic sequence analysis; Mink; Phylogenetic analysis
期刊名称:RESEARCH IN VETERINARY SCIENCE ( 影响因子:2.4; 五年影响因子:2.5 )
ISSN: 0034-5288
年卷期: 2023 年 161 卷
页码:
收录情况: SCI
摘要: A novel Torque teno neovison virus (TTVs) was identified in specimens collected from dead mink during an outbreak of the Aleutian mink disease virus. Eighteen complete genomic sequences were obtained, ranging from 2109 to 2158 nucleotides in length and consisting of an untranslated region and three open reading frames. The genomic organization of mink TTVs is similar to previously reported anelloviruses. However, the deduced amino acid sequence of its ORF1 protein shows genetic diversity compared to related anelloviruses, suggesting that it represents a putative new species within the Anelloviridae family. This study provides a detailed molecular characterization of the novel mink anelloviruses, including its codon usage pattern, origin, and evolution. Analysis of the viral genomic sequences reveals the existence of multiple genotypes of co-infection. Principal component analysis and phylogenetic trees confirm the coexistence of multiple genotypes. Furthermore, the codon usage analyses indicate that mink TTVs have a genotype-specific codon usage pattern and show a low codon usage bias. Host-specific adaptation analysis suggests that TTVs are less adapted to mink. The possible origin and evolutionary history of mink TTVs were elucidated. Mink TTVs was genetically closely related to giant panda anellovirus, representing a new species. The observed incongruence between the phylogenetic history of TTVs and that of their hosts suggests that the evolution of anellovirus is largely determined by cross-species transmission. The study provides insights into the co-infection and genetic evolution of anellovirus in China.
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