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Virology. 2016 Oct 28;500:114-121. doi: 10.1016/j.virol.2016.10.021. [Epub ahead of print]
Co-expression of sialic acid receptors compatible with avian and human influenza virus binding in emus (Dromaius novaehollandiae).
Gujjar N1, Chothe SK2, Gawai S1, Nissly R2, Bhushan G2, Kanagaraj V3, Jayarao BM2, Kathaperumal K4, Subbiah M5, Kuchipudi SV6.
Author information
Abstract
Influenza A viruses (IAVs) continue to threaten animal and human health with constant emergence of novel variants. While aquatic birds are a major reservoir of most IAVs, the role of other terrestrial birds in the evolution of IAVs is becoming increasingly evident. Since 2006, several reports of IAV isolations from emus have surfaced and avian influenza infection of emus can lead to the selection of mammalian like PB2-E627K and PB2-D701N mutants. However, the potential of emus to be co-infected with avian and mammalian IAVs is not yet understood. As a first step, we investigated sialic acid (SA) receptor distribution across major organs and body systems of emu and found a widespread co-expression of both SAα2,3Gal and SAα2,6Gal receptors in various tissues that are compatible with avian and human IAV binding. Our results suggest that emus could allow genetic recombination and hence play an important role in the evolution of IAVs.
Copyright ? 2016 Elsevier Inc. All rights reserved.
KEYWORDS:
Avian influenza; Emu; Genetic re-assortment; Influenza receptors; Interspecies transmission; Lectin histochemistry; Mixing vessel; Pandemic influenza strains; SA receptors
PMID: 27816637 DOI: 10.1016/j.virol.2016.10.021
[PubMed - as supplied by publisher]
Co-expression of sialic acid receptors compatible with avian and human influenza virus binding in emus (Dromaius novaehollandiae).
Gujjar N1, Chothe SK2, Gawai S1, Nissly R2, Bhushan G2, Kanagaraj V3, Jayarao BM2, Kathaperumal K4, Subbiah M5, Kuchipudi SV6.
Author information
Abstract
Influenza A viruses (IAVs) continue to threaten animal and human health with constant emergence of novel variants. While aquatic birds are a major reservoir of most IAVs, the role of other terrestrial birds in the evolution of IAVs is becoming increasingly evident. Since 2006, several reports of IAV isolations from emus have surfaced and avian influenza infection of emus can lead to the selection of mammalian like PB2-E627K and PB2-D701N mutants. However, the potential of emus to be co-infected with avian and mammalian IAVs is not yet understood. As a first step, we investigated sialic acid (SA) receptor distribution across major organs and body systems of emu and found a widespread co-expression of both SAα2,3Gal and SAα2,6Gal receptors in various tissues that are compatible with avian and human IAV binding. Our results suggest that emus could allow genetic recombination and hence play an important role in the evolution of IAVs.
Copyright ? 2016 Elsevier Inc. All rights reserved.
KEYWORDS:
Avian influenza; Emu; Genetic re-assortment; Influenza receptors; Interspecies transmission; Lectin histochemistry; Mixing vessel; Pandemic influenza strains; SA receptors
PMID: 27816637 DOI: 10.1016/j.virol.2016.10.021
[PubMed - as supplied by publisher]