A recombinant baculovirus-expressed S glycoprotein vaccine elicits high titers of SARS-associated coronavirus (SARS-CoV) neutralizing antibodies in mice
Identifieur interne : 004719 ( Main/Merge ); précédent : 004718; suivant : 004720A recombinant baculovirus-expressed S glycoprotein vaccine elicits high titers of SARS-associated coronavirus (SARS-CoV) neutralizing antibodies in mice
Auteurs : ZHIMIN ZHOU [États-Unis] ; Penny Post [États-Unis] ; Rick Chubet [États-Unis] ; Katherine Holtz [États-Unis] ; Clifton Mcpherson [États-Unis] ; Martin Petric [Canada] ; Manon Cox [États-Unis]Source :
- Vaccine [ 0264-410X ] ; 2006.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Vaccin.
English descriptors
- KwdEn :
Abstract
A recombinant SARS-CoV spike (S) glycoprotein vaccine produced in insect cells in a pre-clinical development stage is described. A truncated version of S glycoprotein, containing only the ecto-domain, as well as a His-tagged full-length version were cloned and expressed in a serum-free insect cell line, ExpresSF+®. The proteins, purified to apparent homogeneity by liquid column chromatography, were formulated without adjuvant at 3, 9, 27, and 50 μg per dose in phosphate saline and used to immunize mice. Both antigens in each formulation elicited a strong immune response after two or three vaccinations with the antigen. Neutralizing antibody titers correlated closely with standard ELISA reactivity against the S glycoprotein. The truncated S protein was also formulated with an adjuvant, aluminum hydroxide, at 1 μg per dose (±adjuvant), and 5 μg per dose (±adjuvant). Significantly enhanced immune responses, manifested by higher titers of serum ELISA and viral neutralizing antibodies, were achieved in adjuvanted groups with fewer doses and lower concentration of S glycoprotein. These findings indicate that the ecto-domain of SARS-CoV S glycoprotein vaccine, with or without adjuvant, is immunogenic and induces high titers of virus neutralizing antibodies to levels similar to those achieved with the full S glycoprotein vaccine.
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Pascal:06-0218627Le document en format XML
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<series><title level="j" type="main">Vaccine</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Baculoviridae</term>
<term>Glycoprotein</term>
<term>Immunological adjuvant</term>
<term>Mouse</term>
<term>Neutralization</term>
<term>Neutralizing antibody</term>
<term>Recombinant protein</term>
<term>Severe acute respiratory syndrome</term>
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<term>Vaccin</term>
<term>Anticorps neutralisant</term>
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<term>Neutralisation</term>
<term>Adjuvant immunologique</term>
<term>Syndrome respiratoire aigu sévère</term>
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<front><div type="abstract" xml:lang="en">A recombinant SARS-CoV spike (S) glycoprotein vaccine produced in insect cells in a pre-clinical development stage is described. A truncated version of S glycoprotein, containing only the ecto-domain, as well as a His-tagged full-length version were cloned and expressed in a serum-free insect cell line, ExpresSF+®. The proteins, purified to apparent homogeneity by liquid column chromatography, were formulated without adjuvant at 3, 9, 27, and 50 μg per dose in phosphate saline and used to immunize mice. Both antigens in each formulation elicited a strong immune response after two or three vaccinations with the antigen. Neutralizing antibody titers correlated closely with standard ELISA reactivity against the S glycoprotein. The truncated S protein was also formulated with an adjuvant, aluminum hydroxide, at 1 μg per dose (±adjuvant), and 5 μg per dose (±adjuvant). Significantly enhanced immune responses, manifested by higher titers of serum ELISA and viral neutralizing antibodies, were achieved in adjuvanted groups with fewer doses and lower concentration of S glycoprotein. These findings indicate that the ecto-domain of SARS-CoV S glycoprotein vaccine, with or without adjuvant, is immunogenic and induces high titers of virus neutralizing antibodies to levels similar to those achieved with the full S glycoprotein vaccine.</div>
</front>
</TEI>
<affiliations><list><country><li>Canada</li>
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<tree><country name="États-Unis"><region name="Connecticut"><name sortKey="Zhimin Zhou" sort="Zhimin Zhou" uniqKey="Zhimin Zhou" last="Zhimin Zhou">ZHIMIN ZHOU</name>
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<name sortKey="Chubet, Rick" sort="Chubet, Rick" uniqKey="Chubet R" first="Rick" last="Chubet">Rick Chubet</name>
<name sortKey="Cox, Manon" sort="Cox, Manon" uniqKey="Cox M" first="Manon" last="Cox">Manon Cox</name>
<name sortKey="Holtz, Katherine" sort="Holtz, Katherine" uniqKey="Holtz K" first="Katherine" last="Holtz">Katherine Holtz</name>
<name sortKey="Mcpherson, Clifton" sort="Mcpherson, Clifton" uniqKey="Mcpherson C" first="Clifton" last="Mcpherson">Clifton Mcpherson</name>
<name sortKey="Post, Penny" sort="Post, Penny" uniqKey="Post P" first="Penny" last="Post">Penny Post</name>
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<country name="Canada"><noRegion><name sortKey="Petric, Martin" sort="Petric, Martin" uniqKey="Petric M" first="Martin" last="Petric">Martin Petric</name>
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