Emergence of porcine delta-coronavirus pathogenic infections among children in Haiti through independent zoonoses and convergent evolution
Coronaviruses have caused three major epidemics since 2003, including the ongoing SARS-CoV-2 pandemic. In each case, coronavirus emergence in our species has been associated with zoonotic transmissions from animal reservoirs 1,2 , underscoring how prone such pathogens are to spill over and adapt to new species. Among the four recognized genera of the family Coronaviridae - Alphacoronavirus, Betacoronavirus, Deltacoronavirus, Gammacoronavirus , - human infections reported to date have been limited to alpha- and betacoronaviruses 3 . We identify, for the first time, porcine deltacoronavirus (PDCoV) strains in plasma samples of three Haitian children with acute undifferentiated febrile illness. Genomic and evolutionary analyses reveal that human infections were the result of at least two independent zoonoses of distinct viral lineages that acquired the same mutational signature in the nsp15 and the spike glycoprotein genes by convergent evolution. In particular, structural analysis predicts that one of the changes in the Spike S1 subunit, which contains the receptor-binding domain, may affect protein's flexibility and binding to the host cell receptor. Our findings not only underscore the ability of deltacoronaviruses to adapt and potentially lead to human-to-human transmission, but also raise questions about the role of such transmissions in development of pre-existing immunity to other coronaviruses, such as SARS-CoV-2.
| Errataetall: |
UpdateIn: Nature. 2021 Dec;600(7887):133-137. - PMID 34789872 |
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| Medienart: |
E-Artikel |
| Erscheinungsjahr: |
2021 |
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| Erschienen: |
2021 |
| Enthalten in: |
Zur Gesamtaufnahme - year:2021 |
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| Enthalten in: |
medRxiv : the preprint server for health sciences - (2021) vom: 25. März |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Lednicky, John A [VerfasserIn] |
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| Anmerkungen: |
Date Revised 03.11.2022 published: Electronic UpdateIn: Nature. 2021 Dec;600(7887):133-137. - PMID 34789872 Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1101/2021.03.19.21253391 |
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| PPN (Katalog-ID): |
NLM323473601 |
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| 500 | |a UpdateIn: Nature. 2021 Dec;600(7887):133-137. - PMID 34789872 | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a Coronaviruses have caused three major epidemics since 2003, including the ongoing SARS-CoV-2 pandemic. In each case, coronavirus emergence in our species has been associated with zoonotic transmissions from animal reservoirs 1,2 , underscoring how prone such pathogens are to spill over and adapt to new species. Among the four recognized genera of the family Coronaviridae - Alphacoronavirus, Betacoronavirus, Deltacoronavirus, Gammacoronavirus , - human infections reported to date have been limited to alpha- and betacoronaviruses 3 . We identify, for the first time, porcine deltacoronavirus (PDCoV) strains in plasma samples of three Haitian children with acute undifferentiated febrile illness. Genomic and evolutionary analyses reveal that human infections were the result of at least two independent zoonoses of distinct viral lineages that acquired the same mutational signature in the nsp15 and the spike glycoprotein genes by convergent evolution. In particular, structural analysis predicts that one of the changes in the Spike S1 subunit, which contains the receptor-binding domain, may affect protein's flexibility and binding to the host cell receptor. Our findings not only underscore the ability of deltacoronaviruses to adapt and potentially lead to human-to-human transmission, but also raise questions about the role of such transmissions in development of pre-existing immunity to other coronaviruses, such as SARS-CoV-2 | ||
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