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Induction of neutralising antibodies and cellular immune responses against SARS coronavirus by recombinant measles viruses.

Identifieur interne : 003173 ( Main/Merge ); précédent : 003172; suivant : 003174

Induction of neutralising antibodies and cellular immune responses against SARS coronavirus by recombinant measles viruses.

Auteurs : Matthias Liniger [Suisse] ; Armando Zuniga ; Azaibi Tamin ; Teldja N. Azzouz-Morin ; Marlyse Knuchel ; Rene R. Marty ; Marian Wiegand ; Sara Weibel ; David Kelvin ; Paul A. Rota ; Hussein Y. Naim

Source :

RBID : pubmed:18346823

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English descriptors

Abstract

Live attenuated recombinant measles viruses (rMV) expressing a codon-optimised spike glycoprotein (S) or nucleocapsid protein (N) of severe acute respiratory syndrome-associated coronavirus (SARS-CoV) were generated (rMV-S and rMV-N). Both recombinant viruses stably expressed the corresponding SARS-CoV proteins, grew to similar end titres as the parental strain and induced high antibody titres against MV and the vectored SARS-CoV antigens (S and N) in transgenic mice susceptible to measles infection. The antibodies induced by rMV-S had a high neutralising effect on SARS-CoV as well as on MV. Moreover, significant N-specific cellular immune responses were measured by IFN-gamma ELISPOT assays. The pre-existence of anti-MV antibodies induced by the initial immunisation dose did not inhibit boost of anti-S and anti-N antibodies. Immunisations comprising a mixture of rMV-S and rMV-N induced immune responses similar in magnitude to that of vaccine components administered separately. These data support the suitability of MV as a bivalent candidate vaccine vector against MV and emerging viruses such as SARS-CoV.

DOI: 10.1016/j.vaccine.2008.01.057
PubMed: 18346823

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Le document en format XML

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<term>Measles Vaccine (genetics)</term>
<term>Measles Vaccine (immunology)</term>
<term>Measles virus (metabolism)</term>
<term>Measles virus (physiology)</term>
<term>Membrane Glycoproteins (genetics)</term>
<term>Membrane Glycoproteins (immunology)</term>
<term>Mice</term>
<term>Neutralization Tests</term>
<term>Nucleocapsid Proteins (genetics)</term>
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<term>SARS Virus (immunology)</term>
<term>SARS Virus (metabolism)</term>
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<term>Vaccines, Synthetic</term>
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<div type="abstract" xml:lang="en">Live attenuated recombinant measles viruses (rMV) expressing a codon-optimised spike glycoprotein (S) or nucleocapsid protein (N) of severe acute respiratory syndrome-associated coronavirus (SARS-CoV) were generated (rMV-S and rMV-N). Both recombinant viruses stably expressed the corresponding SARS-CoV proteins, grew to similar end titres as the parental strain and induced high antibody titres against MV and the vectored SARS-CoV antigens (S and N) in transgenic mice susceptible to measles infection. The antibodies induced by rMV-S had a high neutralising effect on SARS-CoV as well as on MV. Moreover, significant N-specific cellular immune responses were measured by IFN-gamma ELISPOT assays. The pre-existence of anti-MV antibodies induced by the initial immunisation dose did not inhibit boost of anti-S and anti-N antibodies. Immunisations comprising a mixture of rMV-S and rMV-N induced immune responses similar in magnitude to that of vaccine components administered separately. These data support the suitability of MV as a bivalent candidate vaccine vector against MV and emerging viruses such as SARS-CoV.</div>
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