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Augmentation of immune responses to SARS coronavirus by a combination of DNA and whole killed virus vaccines

Identifieur interne : 000355 ( PascalFrancis/Curation ); précédent : 000354; suivant : 000356

Augmentation of immune responses to SARS coronavirus by a combination of DNA and whole killed virus vaccines

Auteurs : Alexander N. Zakhartchouk [Canada] ; QIANG LIU [Canada] ; Martin Petric [Canada] ; Lorne A. Babiuk [Canada]

Source :

RBID : Pascal:05-0337684

Descripteurs français

English descriptors

Abstract

We studied the immunogenicity of a DNA SARS-vaccine, a whole killed virus, or a whole killed and DNA vaccine combination. The DNA vaccine contained a plasmid encoding the SARS coronavirus (SARS-CoV) S protein under the control of the human CMV promoter and intron A. The whole killed virus vaccine was comprised of SARS-CoV, propagated in Vero-E6 cells, with subsequent β-propilactone inactivation and formulated with aluminum hydroxide adjuvant. Mice immunized twice with the DNA vaccine and once with the whole killed virus elicited higher antibody responses than mice immunized three times with the DNA vaccine or once with the whole killed virus vaccine. Mice immunized twice with the whole killed virus vaccine elicited higher antibody responses than mice immunized three times with the DNA vaccine or once with the whole killed virus vaccine. However, a combination of the vaccines induced T-helper type 1 (Th1) immune responses while the whole killed virus vaccine induced T helper type 2 (Th2) immune response. These results demonstrate that combination of the DNA vaccine and the whole killed virus vaccine can be used to enhance the magnitude and change the bias of the immune responses to SARS-CoV.
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A08 01  1  ENG  @1 Augmentation of immune responses to SARS coronavirus by a combination of DNA and whole killed virus vaccines
A11 01  1    @1 ZAKHARTCHOUK (Alexander N.)
A11 02  1    @1 QIANG LIU
A11 03  1    @1 PETRIC (Martin)
A11 04  1    @1 BABIUK (Lorne A.)
A14 01      @1 Vaccine and Infectious Disease Organization, University of Saskatchewan, 120 Veterinary Road @2 Saskatoon, Sask., S7N 5E3 @3 CAN @Z 1 aut. @Z 2 aut. @Z 4 aut.
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A44       @0 0000 @1 © 2005 INIST-CNRS. All rights reserved.
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C01 01    ENG  @0 We studied the immunogenicity of a DNA SARS-vaccine, a whole killed virus, or a whole killed and DNA vaccine combination. The DNA vaccine contained a plasmid encoding the SARS coronavirus (SARS-CoV) S protein under the control of the human CMV promoter and intron A. The whole killed virus vaccine was comprised of SARS-CoV, propagated in Vero-E6 cells, with subsequent β-propilactone inactivation and formulated with aluminum hydroxide adjuvant. Mice immunized twice with the DNA vaccine and once with the whole killed virus elicited higher antibody responses than mice immunized three times with the DNA vaccine or once with the whole killed virus vaccine. Mice immunized twice with the whole killed virus vaccine elicited higher antibody responses than mice immunized three times with the DNA vaccine or once with the whole killed virus vaccine. However, a combination of the vaccines induced T-helper type 1 (Th1) immune responses while the whole killed virus vaccine induced T helper type 2 (Th2) immune response. These results demonstrate that combination of the DNA vaccine and the whole killed virus vaccine can be used to enhance the magnitude and change the bias of the immune responses to SARS-CoV.
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C03 02  X  FRE  @0 Réponse immune @5 05
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C07 01  X  FRE  @0 Coronavirus @2 NW
C07 01  X  ENG  @0 Coronavirus @2 NW
C07 01  X  SPA  @0 Coronavirus @2 NW
C07 02  X  FRE  @0 Coronaviridae @2 NW
C07 02  X  ENG  @0 Coronaviridae @2 NW
C07 02  X  SPA  @0 Coronaviridae @2 NW
C07 03  X  FRE  @0 Nidovirales @2 NW
C07 03  X  ENG  @0 Nidovirales @2 NW
C07 03  X  SPA  @0 Nidovirales @2 NW
C07 04  X  FRE  @0 Virus @2 NW
C07 04  X  ENG  @0 Virus @2 NW
C07 04  X  SPA  @0 Virus @2 NW
N21       @1 234
N44 01      @1 OTO
N82       @1 OTO

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Le document en format XML

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