ArticleVirus evolution2021
Phylodynamic study of the conserved RNA structure encompassing the hemagglutinin cleavage site encoding region of H5 and H7 low pathogenic avian influenza viruses.
Article in Virus evolution, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 12 citations in OpenAlex.
- Polymerase trapping as the mechanism of H5 highly pathogenic avian influenza virus genesis.Science (New York, N.Y.) · 2026Article
- Review
- Genetic Characterization and Pathogenicity of a Triple-Reassortant H1N1 Swine Influenza Virus Isolated in Guangdong.Transboundary and emerging diseases · 2026Article
- Isolation and Characterization of H1 Subtype Swine Influenza Viruses Recently Circulating in China.Viruses · 2025Article
- High pathogenicity avian influenza virus emergence: Blame it on chickens or on humans raising chickens?PLoS pathogens · 2024Article
- Nucleotide sequence as key determinant driving insertions at influenza A virus hemagglutinin cleavage sites.Npj viruses · 2024Article
- Development of an Inactivated Avian Influenza Virus Vaccine against Circulating H9N2 in Chickens and Ducks.Vaccines · 2023Article
- Genetic characterization and pathogenicity of a Eurasian avian-like H1N1 swine influenza reassortant virus.Virology journal · 2022Article
- Hemagglutinin Subtype Specificity and Mechanisms of Highly Pathogenic Avian Influenza Virus Genesis.Viruses · 2022Review
- In Silico Analyses of the Role of Codon Usage at the Hemagglutinin Cleavage Site in Highly Pathogenic Avian Influenza Genesis.Viruses · 2022Article
- Structural Requirements in the Hemagglutinin Cleavage Site-Coding RNA Region for the Generation of Highly Pathogenic Avian Influenza Virus.Pathogens (Basel, Switzerland) · 2021Article
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Authors and funding
8 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Highly pathogenic avian influenza viruses (HPAIVs) evolve from low pathogenic avian influenza viruses (LPAIVs) of the H5 and H7 subtypes. This evolution is characterized by the acquisition of a multi-basic cleavage site (MBCS) motif in the hemagglutinin (HA) that leads to an extended viral tropism and severe disease in poultry. One key unanswered question is whether the risk of transition to HPAIVs is similar for all LPAIVs H5 or H7 strains, or whether specific determinants in the HA sequence of some H5 or H7 LPAIV strains correlate with a higher risk of transition to HPAIVs. Here, we determined if specific features of the conserved RNA stem-loop located at the HA cleavage site-encoding region could be detected along the LPAIV to HPAIV evolutionary pathway. Analysis of the thermodynamic stability of the predicted RNA structures showed no specific patterns common to HA sequences leading to HPAIVs and distinct from those remaining LPAIVs. However, RNA structure clustering analysis revealed that most of the American lineage ancestors leading to H7 emergences via recombination shared the same viral RNA (vRNA) structure topology at the HA1/HA2 boundary region. Our study thus identified predicted secondary RNA structures present in the HA of H7 viruses, which could promote genetic recombination and acquisition of a multibasic cleavage site motif (MBCS).
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