Protective humoral responses to severe acute respiratory syndrome-associated coronavirus: implications for the design of an effective protein-based vaccine.
Identifieur interne : 005183 ( Main/Exploration ); précédent : 005182; suivant : 005184Protective humoral responses to severe acute respiratory syndrome-associated coronavirus: implications for the design of an effective protein-based vaccine.
Auteurs : Hai Pang [République populaire de Chine] ; Yinggang Liu [République populaire de Chine] ; Xueqing Han [République populaire de Chine] ; Yanhui Xu [République populaire de Chine] ; Fuguo Jiang [République populaire de Chine] ; Donglai Wu [République populaire de Chine] ; Xiangang Kong [République populaire de Chine] ; Mark Bartlam [République populaire de Chine] ; Zihe Rao [République populaire de Chine]Source :
- The Journal of general virology [ 0022-1317 ] ; 2004.
Descripteurs français
- KwdFr :
- MESH :
- immunologie : Protéines virales, Vaccins antiviraux, Virus du SRAS.
- sang : Anticorps antiviraux.
- Animaux, Cellules Vero, Lapins, Mâle, Syndrome respiratoire aigu sévère, Tests de neutralisation.
English descriptors
- KwdEn :
- MESH :
- chemical , blood : Antibodies, Viral.
- immunology : SARS Virus, Viral Proteins, Viral Vaccines.
- prevention & control : Severe Acute Respiratory Syndrome.
- Animals, Chlorocebus aethiops, Male, Neutralization Tests, Rabbits, Vero Cells.
Abstract
Some of the structural proteins of severe acute respiratory syndrome-associated coronavirus (SARS-CoV) carry major epitopes involved in virus neutralization and are essential for the induction of protective humoral responses and the development of an effective vaccine. Rabbit antisera were prepared using full-length N and M proteins and eight expressed fragments covering the S protein. Antisera to S and M proteins were found to have different neutralizing titres towards SARS-CoV infection in vivo, ranging from 1:35 to 1:128. Antiserum to the N protein did not contain neutralizing antibodies. Epitopes inducing protective humoral responses to virus infection were located mainly in the M protein and a region spanning residues 13-877 of the S protein. The neutralizing ability of antisera directed against the expressed structural proteins was greater than that of convalescent patient antisera, confirming that, as immunogens, the former induce strong, SARS-CoV-specific neutralizing antibody responses. The in vitro neutralization assay has important implications for the design of an effective, protein-based vaccine preventing SARS-CoV infection.
DOI: 10.1099/vir.0.80111-0
PubMed: 15448374
Affiliations:
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Le document en format XML
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<front><div type="abstract" xml:lang="en">Some of the structural proteins of severe acute respiratory syndrome-associated coronavirus (SARS-CoV) carry major epitopes involved in virus neutralization and are essential for the induction of protective humoral responses and the development of an effective vaccine. Rabbit antisera were prepared using full-length N and M proteins and eight expressed fragments covering the S protein. Antisera to S and M proteins were found to have different neutralizing titres towards SARS-CoV infection in vivo, ranging from 1:35 to 1:128. Antiserum to the N protein did not contain neutralizing antibodies. Epitopes inducing protective humoral responses to virus infection were located mainly in the M protein and a region spanning residues 13-877 of the S protein. The neutralizing ability of antisera directed against the expressed structural proteins was greater than that of convalescent patient antisera, confirming that, as immunogens, the former induce strong, SARS-CoV-specific neutralizing antibody responses. The in vitro neutralization assay has important implications for the design of an effective, protein-based vaccine preventing SARS-CoV infection.</div>
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