Antibody response of patients with severe acute respiratory syndrome (SARS) targets the viral nucleocapsid
Identifieur interne : 005B75 ( Main/Exploration ); précédent : 005B74; suivant : 005B76Antibody response of patients with severe acute respiratory syndrome (SARS) targets the viral nucleocapsid
Auteurs : Danny Tze Ming Leung [Hong Kong] ; Frankie Chi Hang Tam [Hong Kong] ; CHUN HUNG MA [Hong Kong] ; Paul Kay Sheung Chan [Hong Kong] ; Jo Lai Ken Cheung [Hong Kong] ; HAITAO NIU [Hong Kong] ; John Siu Lun Tam [Hong Kong] ; PAK LEONG LIM [Hong Kong]Source :
- The Journal of infectious diseases [ 0022-1899 ] ; 2004.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Homme.
English descriptors
- KwdEn :
Abstract
The recent outbreak of severe acute respiratory syndrome (SARS) provided an opportunity to study the antibody response of infected individuals to the causative virus, SARS coronavirus. We examined serum samples obtained from 46 patients with SARS, 40 patients with non-SARS pneumonia, and 38 healthy individuals, by use of Western blotting (WB), enzyme-linked immunoassay (ELISA), and immunofluorescence assay, using both native and bacterially produced antigens of the virus. We found a highly restricted, immunoglobulin G-dominated antibody response in patients with SARS, directed most frequently (89% by ELISA) and predominantly at the nucleocapsid. Almost all of the subjects without SARS had no antinucleocapsid antibodies. The spike protein was the next most frequently targeted, but only 63% of the patients (by ELISA) responded. Other targets of the response identified by use of WB included antigens of 80 and 60 kDa. Several nonstructural proteins cloned were not antigenic, and the culture-derived nucleocapsid appeared to be specifically degraded.
Affiliations:
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<term>Severe acute respiratory syndrome</term>
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<front><div type="abstract" xml:lang="en">The recent outbreak of severe acute respiratory syndrome (SARS) provided an opportunity to study the antibody response of infected individuals to the causative virus, SARS coronavirus. We examined serum samples obtained from 46 patients with SARS, 40 patients with non-SARS pneumonia, and 38 healthy individuals, by use of Western blotting (WB), enzyme-linked immunoassay (ELISA), and immunofluorescence assay, using both native and bacterially produced antigens of the virus. We found a highly restricted, immunoglobulin G-dominated antibody response in patients with SARS, directed most frequently (89% by ELISA) and predominantly at the nucleocapsid. Almost all of the subjects without SARS had no antinucleocapsid antibodies. The spike protein was the next most frequently targeted, but only 63% of the patients (by ELISA) responded. Other targets of the response identified by use of WB included antigens of 80 and 60 kDa. Several nonstructural proteins cloned were not antigenic, and the culture-derived nucleocapsid appeared to be specifically degraded.</div>
</front>
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