Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) was isolated from the oro/pharyngeal swabs of two Italian COVID-19 patients, physicians in a COVID-19 division hospital, with different courses of the disease. The complete genome sequences show that the two isolates belong to the B1.1 lineage, but contain a nucleotide mutation in the ORF6, leading to a stop codon and to the deletion of 6 amino acids in the C terminus. This deletion was unique, compared to the currently available sequences deposited in the GISAID and GenBank database. It did not affect the in vitro viral replication, neither the neutralizing activities of the patients' antibodies. Based on homology analysis with other Coronaviruses, the two isolated lacked the ORF6 aminoacidic portion responsible for the inhibition of the antiviral Interferon (IFN)-based host response. IFN seems to have a dual role of in SARS-CoV-2 infected patients: not only antiviral activity, but also a detrimental role in case of excessive production. A deletion in the SARS-CoV-2 ORF6 protein might have a specific, still unknown role in the viral pathogenesis.
Isolation of SARS-CoV-2 strains carrying a nucleotide mutation, leading to a stop codon in the ORF 6 protein / S. Delbue, S. D'Alessandro, L. Signorini, M. Dolci, E. Pariani, M. Bianchi, S. Fattori, A. Modenese, C. Galli, I. Eberini, P. Ferrante. - In: EMERGING MICROBES & INFECTIONS. - ISSN 2222-1751. - 10:1(2021), pp. 252-255.
|Titolo:||Isolation of SARS-CoV-2 strains carrying a nucleotide mutation, leading to a stop codon in the ORF 6 protein|
DELBUE, SERENA (Primo) (Corresponding)
D'ALESSANDRO, SARAH (Secondo)
EBERINI, IVANO (Penultimo)
FERRANTE, PASQUALE (Ultimo)
|Parole Chiave:||COVID-19 pathogenesis; interferon; ORF6; SARS-CoV-2; stop codon; COVID-19; Codon, Terminator; Female; Humans; Male; Middle Aged; SARS-CoV-2; Viral Proteins; Point Mutation|
|Settore Scientifico Disciplinare:||Settore MED/42 - Igiene Generale e Applicata|
|Progetto:||Addressing viral neuropathogenesis: Unraveling the molecular and cellular pathways of viral replication and host cell response and paving the way for the development novel host-targeted, broad spectrum, antiviral agents|
PIANO DI SOSTEGNO ALLA RICERCA 2015-2017 - LINEA 2 "DOTAZIONE ANNUALE PER ATTIVITA' ISTITUZIONALE"
Dipartimenti di Eccellenza 2018-2022 - Dipartimento di SCIENZE FARMACOLOGICHE E BIOMOLECOLARI
|Data di pubblicazione:||2021|
|Data ahead of print / Data di stampa:||18-feb-2021|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1080/22221751.2021.1884003|
|Appare nelle tipologie:||01 - Articolo su periodico|