Replication-dependent downregulation of cellular angiotensin-converting enzyme 2 protein expression by human coronavirus NL63
Identifieur interne : 001F68 ( Main/Exploration ); précédent : 001F67; suivant : 001F69Replication-dependent downregulation of cellular angiotensin-converting enzyme 2 protein expression by human coronavirus NL63
Auteurs : Ronald Dijkman [Pays-Bas] ; Maarten F. Jebbink [Pays-Bas] ; Martin Deijs [Pays-Bas] ; Aleksandra Milewska [Pays-Bas] ; Krzysztof Pyrc [Pologne] ; Elena Buelow [Pays-Bas] ; Anna Van Der Bijl [Pays-Bas] ; Lia Van Der Hoek [Pays-Bas]Source :
- Journal of general virology [ 0022-1317 ] ; 2012.
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English descriptors
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Abstract
Like severe acute respiratory syndrome coronavirus (SARS-CoV), human coronavirus (HCoV)-NL63 employs angiotensin-converting enzyme 2 (ACE2) as a receptor for cellular entry. SARS-CoV infection causes robust downregulation of cellular ACE2 expression levels and it has been suggested that the SARS-CoV effect on ACE2 is involved in the severity of disease. We investigated whether cellular ACE2 downregulation occurs at optimal replication conditions of HCoV-NL63 infection. The expression of the homologue of ACE2, the ACE protein not used as a receptor by HCoV-NL63, was measured as a control. A specific decrease for ACE2 protein level was observed when HCoV-NL63 was cultured at 34 °C. Culturing the virus at the suboptimal temperature of 37 °C resulted in low replication of the virus and the effect on ACE2 expression was lost. We conclude that the decline of ACE2 expression is dependent on the efficiency of HCoV-NL63 replication, and that HCoV-NL63 and SARS-CoV both affect cellular ACE2 expression during infection.
Affiliations:
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<front><div type="abstract" xml:lang="en">Like severe acute respiratory syndrome coronavirus (SARS-CoV), human coronavirus (HCoV)-NL63 employs angiotensin-converting enzyme 2 (ACE2) as a receptor for cellular entry. SARS-CoV infection causes robust downregulation of cellular ACE2 expression levels and it has been suggested that the SARS-CoV effect on ACE2 is involved in the severity of disease. We investigated whether cellular ACE2 downregulation occurs at optimal replication conditions of HCoV-NL63 infection. The expression of the homologue of ACE2, the ACE protein not used as a receptor by HCoV-NL63, was measured as a control. A specific decrease for ACE2 protein level was observed when HCoV-NL63 was cultured at 34 °C. Culturing the virus at the suboptimal temperature of 37 °C resulted in low replication of the virus and the effect on ACE2 expression was lost. We conclude that the decline of ACE2 expression is dependent on the efficiency of HCoV-NL63 replication, and that HCoV-NL63 and SARS-CoV both affect cellular ACE2 expression during infection.</div>
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