Recombinant infectious bronchitis coronavirus Beaudette with the spike protein gene of the pathogenic M41 strain remains attenuated but induces protective immunity.
Identifieur interne : 005168 ( Main/Exploration ); précédent : 005167; suivant : 005169Recombinant infectious bronchitis coronavirus Beaudette with the spike protein gene of the pathogenic M41 strain remains attenuated but induces protective immunity.
Auteurs : Teri Hodgson ; Rosa Casais ; Brian Dove ; Paul Britton ; Dave CavanaghSource :
- Journal of virology [ 0022-538X ] ; 2004.
Descripteurs français
- KwdFr :
- Animaux, Glycoprotéine de spicule des coronavirus, Glycoprotéines membranaires (génétique), Glycoprotéines membranaires (immunologie), Infections à coronavirus (), Infections à coronavirus (anatomopathologie), Infections à coronavirus (médecine vétérinaire), Infections à coronavirus (virologie), Maladies de la volaille (), Maladies de la volaille (anatomopathologie), Maladies de la volaille (virologie), Poulets, Protéines de l'enveloppe virale (génétique), Protéines de l'enveloppe virale (immunologie), Protéines recombinantes (génétique), Protéines recombinantes (immunologie), Réplication virale, Techniques de culture d'organes, Trachée (anatomopathologie), Trachée (virologie), Virus de la bronchite infectieuse (génétique), Virus de la bronchite infectieuse (immunologie), Virus de la bronchite infectieuse (pathogénicité).
- MESH :
- anatomopathologie : Infections à coronavirus, Maladies de la volaille, Trachée.
- génétique : Glycoprotéines membranaires, Protéines de l'enveloppe virale, Protéines recombinantes, Virus de la bronchite infectieuse.
- immunologie : Glycoprotéines membranaires, Protéines de l'enveloppe virale, Protéines recombinantes, Virus de la bronchite infectieuse.
- médecine vétérinaire : Infections à coronavirus.
- pathogénicité : Virus de la bronchite infectieuse.
- virologie : Infections à coronavirus, Maladies de la volaille, Trachée.
- Animaux, Glycoprotéine de spicule des coronavirus, Infections à coronavirus, Maladies de la volaille, Poulets, Réplication virale, Techniques de culture d'organes.
English descriptors
- KwdEn :
- Animals, Chickens, Coronavirus Infections (pathology), Coronavirus Infections (prevention & control), Coronavirus Infections (veterinary), Coronavirus Infections (virology), Infectious bronchitis virus (genetics), Infectious bronchitis virus (immunology), Infectious bronchitis virus (pathogenicity), Membrane Glycoproteins (genetics), Membrane Glycoproteins (immunology), Organ Culture Techniques, Poultry Diseases (pathology), Poultry Diseases (prevention & control), Poultry Diseases (virology), Recombinant Proteins (genetics), Recombinant Proteins (immunology), Spike Glycoprotein, Coronavirus, Trachea (pathology), Trachea (virology), Viral Envelope Proteins (genetics), Viral Envelope Proteins (immunology), Virus Replication.
- MESH :
- chemical , genetics : Membrane Glycoproteins, Recombinant Proteins, Viral Envelope Proteins.
- genetics : Infectious bronchitis virus.
- immunology : Infectious bronchitis virus, Membrane Glycoproteins, Recombinant Proteins, Viral Envelope Proteins.
- pathogenicity : Infectious bronchitis virus.
- pathology : Coronavirus Infections, Poultry Diseases, Trachea.
- prevention & control : Coronavirus Infections, Poultry Diseases.
- veterinary : Coronavirus Infections.
- virology : Coronavirus Infections, Poultry Diseases, Trachea.
- Animals, Chickens, Organ Culture Techniques, Spike Glycoprotein, Coronavirus, Virus Replication.
Abstract
We have replaced the ectodomain of the spike (S) protein of the Beaudette strain (Beau-R; apathogenic for Gallus domesticus chickens) of avian infectious bronchitis coronavirus (IBV) with that from the pathogenic M41 strain to produce recombinant IBV BeauR-M41(S). We have previously shown that this changed the tropism of the virus in vitro (R. Casais, B. Dove, D. Cavanagh, and P. Britton, J. Virol. 77:9084-9089, 2003). Herein we have assessed the pathogenicity and immunogenicity of BeauR-M41(S). There were no consistent differences in pathogenicity between the recombinant BeauR-M41(S) and its apathogenic parent Beau-R (based on snicking, nasal discharge, wheezing, watery eyes, rales, and ciliostasis in trachea), and both replicated poorly in trachea and nose compared to M41; the S protein from the pathogenic M41 had not altered the apathogenic nature of Beau-R. Both Beau-R and BeauR-M41(S) induced protection against challenge with M41 as assessed by absence of recovery of challenge virus and nasal exudate. With regard to snicking and ciliostasis, BeauR-M41(S) induced greater protection (seven out of nine chicks [77%]; assessed by ciliostasis) than Beau-R (one out of nine; 11%) but less than M41 (100%). The greater protection induced by BeauR-M41(S) against M41 may be related to the ectodomain of the spike protein of Beau-R differing from that of M41 by 4.1%; a small number of epitopes on the S protein may play a disproportionate role in the induction of immunity. The results are promising for the prospects of S-gene exchange for IBV vaccine development.
DOI: 10.1128/JVI.78.24.13804-13811.2004
PubMed: 15564488
Affiliations:
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Le document en format XML
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volaille</term><term>Trachée</term></keywords><keywords scheme="MESH" qualifier="virology" xml:lang="en"><term>Coronavirus Infections</term><term>Poultry Diseases</term><term>Trachea</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Animals</term><term>Chickens</term><term>Organ Culture Techniques</term><term>Spike Glycoprotein, Coronavirus</term><term>Virus Replication</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Animaux</term><term>Glycoprotéine de spicule des coronavirus</term><term>Infections à coronavirus</term><term>Maladies de la volaille</term><term>Poulets</term><term>Réplication virale</term><term>Techniques de culture d'organes</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We have replaced the ectodomain of the spike (S) protein of the Beaudette strain (Beau-R; apathogenic for Gallus domesticus chickens) of avian infectious bronchitis coronavirus (IBV) with that from the pathogenic M41 strain to produce recombinant IBV BeauR-M41(S). We have previously shown that this changed the tropism of the virus in vitro (R. Casais, B. Dove, D. Cavanagh, and P. Britton, J. Virol. 77:9084-9089, 2003). Herein we have assessed the pathogenicity and immunogenicity of BeauR-M41(S). There were no consistent differences in pathogenicity between the recombinant BeauR-M41(S) and its apathogenic parent Beau-R (based on snicking, nasal discharge, wheezing, watery eyes, rales, and ciliostasis in trachea), and both replicated poorly in trachea and nose compared to M41; the S protein from the pathogenic M41 had not altered the apathogenic nature of Beau-R. Both Beau-R and BeauR-M41(S) induced protection against challenge with M41 as assessed by absence of recovery of challenge virus and nasal exudate. With regard to snicking and ciliostasis, BeauR-M41(S) induced greater protection (seven out of nine chicks [77%]; assessed by ciliostasis) than Beau-R (one out of nine; 11%) but less than M41 (100%). The greater protection induced by BeauR-M41(S) against M41 may be related to the ectodomain of the spike protein of Beau-R differing from that of M41 by 4.1%; a small number of epitopes on the S protein may play a disproportionate role in the induction of immunity. The results are promising for the prospects of S-gene exchange for IBV vaccine development.</div></front></TEI><affiliations><list></list><tree><noCountry><name sortKey="Britton, Paul" sort="Britton, Paul" uniqKey="Britton P" first="Paul" last="Britton">Paul Britton</name><name sortKey="Casais, Rosa" sort="Casais, Rosa" uniqKey="Casais R" first="Rosa" last="Casais">Rosa Casais</name><name sortKey="Cavanagh, Dave" sort="Cavanagh, Dave" uniqKey="Cavanagh D" first="Dave" last="Cavanagh">Dave Cavanagh</name><name sortKey="Dove, Brian" sort="Dove, Brian" uniqKey="Dove B" first="Brian" last="Dove">Brian Dove</name><name sortKey="Hodgson, Teri" sort="Hodgson, Teri" uniqKey="Hodgson T" first="Teri" last="Hodgson">Teri Hodgson</name></noCountry></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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