Sensitivity to Neutralizing Antibodies and Resistance to Type I Interferons in SARS-CoV-2 R.1 Lineage Variants, Canada.
Emerg Infect Dis
; 29(7): 1386-1396, 2023 07.
Article
in English
| MEDLINE | ID: covidwho-20237258
ABSTRACT
Isolating and characterizing emerging SARS-CoV-2 variants is key to understanding virus pathogenesis. In this study, we isolated samples of the SARS-CoV-2 R.1 lineage, categorized as a variant under monitoring by the World Health Organization, and evaluated their sensitivity to neutralizing antibodies and type I interferons. We used convalescent serum samples from persons in Canada infected either with ancestral virus (wave 1) or the B.1.1.7 (Alpha) variant of concern (wave 3) for testing neutralization sensitivity. The R.1 isolates were potently neutralized by both the wave 1 and wave 3 convalescent serum samples, unlike the B.1.351 (Beta) variant of concern. Of note, the R.1 variant was significantly more resistant to type I interferons (IFN-α/ß) than was the ancestral isolate. Our study demonstrates that the R.1 variant retained sensitivity to neutralizing antibodies but evolved resistance to type I interferons. This critical driving force will influence the trajectory of the pandemic.
Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Interferon Type I
/
COVID-19
Type of study:
Experimental Studies
Topics:
Variants
Limits:
Humans
Country/Region as subject:
North America
Language:
English
Journal:
Emerg Infect Dis
Journal subject:
Communicable Diseases
Year:
2023
Document Type:
Article
Similar
MEDLINE
...
LILACS
LIS