Molecular and phylogenetic analysis of Vietnamese canine parvovirus 2C originated from dogs reveals a new Asia-IV clade

© 2020 Wiley-VCH GmbH..

Canine parvovirus type 2 (CPV-2) is a small, single-stranded DNA virus causing fatal haemorrhagic enteritis in dogs. Currently, CPV-2 is classified into CPV-2a, CPV-2b and CPV-2c based on genetic variation in the VP2 gene. The CPV-2c variant has become ubiquitous worldwide and gained attention for monitoring parvoviral evolution. In this study, we characterized the full-length genome sequences of CPV-2c strains obtained from 59 dogs in Vietnam. Molecular analysis revealed that Vietnamese CPV-2c shared a common evolutionary pattern with the Asian CPV-2 clade, which is marked by genetic signature patterns in the structural and nonstructural proteins. In addition, these Vietnamese CPV-2c strains exhibited unique Thr112Ile and Ile447Met mutations in the VP1 and VP2 sequence, respectively. Interestingly, phylogenetic analysis indicated that the mutations of amino acid residues in both the structural and nonstructural genes have contributed to the emergence of a new clade, designated here as the Asia-IV clade. The substitution rates, estimated from a dataset containing 199 sequences over the last 42 years, confirmed that CPV-2 showed a high rate of nucleotide substitution, at about 2.49 × 10-4 nucleotide substitutions per site per year (nt/s/y), with VP1/2 and NS1/2 estimates of 3.06 × 10-4 and 3.16 × 10-4 nt/s/y, respectively. Even though no evidence of genetic recombination in these Vietnamese CPV-2c strains was established, potential positive selection sites were observed in both the structural and nonstructural genes, suggesting the viral evolutionary process has occurred in both the structural and nonstructural proteins. Genetic and evolutionary analysis of the full-length genome sequence is necessary to gain evolutionary insight of CPV-2.

Medienart:

E-Artikel

Erscheinungsjahr:

2021

Erschienen:

2021

Enthalten in:

Zur Gesamtaufnahme - volume:68

Enthalten in:

Transboundary and emerging diseases - 68(2021), 3 vom: 20. Mai, Seite 1445-1453

Sprache:

Englisch

Beteiligte Personen:

Nguyen Manh, Tuong [VerfasserIn]
Piewbang, Chutchai [VerfasserIn]
Rungsipipat, Anudep [VerfasserIn]
Techangamsuwan, Somporn [VerfasserIn]

Links:

Volltext

Themen:

Asia-IV subclade
Canine parvovirus-2c
Dog
Evolution
Journal Article
Phylodynamic
Vietnam

Anmerkungen:

Date Completed 24.06.2021

Date Revised 24.06.2021

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1111/tbed.13811

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM314274057