ORF8 and ORF3b antibodies are accurate serological markers of early and late SARS-CoV-2 infection.
Nat Immunol
; 21(10): 1293-1301, 2020 10.
Article
in En
| MEDLINE
| ID: mdl-32807944
ABSTRACT
The SARS-CoV-2 virus emerged in December 2019 and has caused a worldwide pandemic due to the lack of any pre-existing immunity. Accurate serology testing is urgently needed to help diagnose infection, determine past exposure of populations and assess the response to a future vaccine. The landscape of antibody responses to SARS-CoV-2 is unknown. In this study, we utilized the luciferase immunoprecipitation system to assess the antibody responses to 15 different SARS-CoV-2 antigens in patients with COVID-19. We identified new targets of the immune response to SARS-CoV-2 and show that nucleocapsid, open reading frame (ORF)8 and ORF3b elicit the strongest specific antibody responses. ORF8 and ORF3b antibodies, taken together as a cluster of points, identified 96.5% of COVID-19 samples at early and late time points of disease with 99.5% specificity. Our findings could be used to develop second-generation diagnostic tests to improve serological assays for COVID-19 and are important in understanding pathogenicity.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Pneumonia, Viral
/
Viral Proteins
/
Coronavirus Infections
/
Clinical Laboratory Techniques
/
Betacoronavirus
/
Antibodies, Viral
Type of study:
Diagnostic_studies
/
Prognostic_studies
Limits:
Adult
/
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Country/Region as subject:
Asia
Language:
En
Journal:
Nat Immunol
Journal subject:
ALERGIA E IMUNOLOGIA
Year:
2020
Document type:
Article
Affiliation country:
China