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Experimental confirmation of recombination upstream of the S1 hypervariable region of infectious bronchitis virus

Chimeric infectious bronchitis virus (IBV) genomes with cross-over sites in the S1 gene were generated by co-infection with two distinct IBV strains. Recombinant viruses were collected from chicken embryos, embryonic cultured cells and chickens co-infected with Ark99 and Mass41 strains and purified...

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Detalles Bibliográficos
Autores principales: Wang, Li, Xu, Yuan, Collisson, Ellen W
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier Science B.V. 1997
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7126307/
https://www.ncbi.nlm.nih.gov/pubmed/9213388
http://dx.doi.org/10.1016/S0168-1702(97)01466-4
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author Wang, Li
Xu, Yuan
Collisson, Ellen W
author_facet Wang, Li
Xu, Yuan
Collisson, Ellen W
author_sort Wang, Li
collection PubMed
description Chimeric infectious bronchitis virus (IBV) genomes with cross-over sites in the S1 gene were generated by co-infection with two distinct IBV strains. Recombinant viruses were collected from chicken embryos, embryonic cultured cells and chickens co-infected with Ark99 and Mass41 strains and purified by differential centrifugation. The recombinant S1 genes were identified by reverse transcription polymerase chain reaction (RTPCR) using heterologous primers and confirmed by nucleotide sequencing. The recombinants with Ark99 5′ and Mass41 3′ sequences were identified following the in vitro, in ovo and in vivo co-infections. Mixed RNA extracted from Ark99 and Mass41 did not produce RTPCR products with these primers at the PCR conditions used. Cross-over sites within the amplified 580 (Mass41) or 604 (Ark99) bases of the 5′ S1 gene could only be detected between nucleotides 50 and 155. While this region, lying upstream of the S1 hypervariable region, corresponded with sites commonly identified in naturally occurring isolates, recombination sites identified in these studies could not be detected within the HVR of S1 of the genomes of chimeric viruses.
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spelling pubmed-71263072020-04-08 Experimental confirmation of recombination upstream of the S1 hypervariable region of infectious bronchitis virus Wang, Li Xu, Yuan Collisson, Ellen W Virus Res Article Chimeric infectious bronchitis virus (IBV) genomes with cross-over sites in the S1 gene were generated by co-infection with two distinct IBV strains. Recombinant viruses were collected from chicken embryos, embryonic cultured cells and chickens co-infected with Ark99 and Mass41 strains and purified by differential centrifugation. The recombinant S1 genes were identified by reverse transcription polymerase chain reaction (RTPCR) using heterologous primers and confirmed by nucleotide sequencing. The recombinants with Ark99 5′ and Mass41 3′ sequences were identified following the in vitro, in ovo and in vivo co-infections. Mixed RNA extracted from Ark99 and Mass41 did not produce RTPCR products with these primers at the PCR conditions used. Cross-over sites within the amplified 580 (Mass41) or 604 (Ark99) bases of the 5′ S1 gene could only be detected between nucleotides 50 and 155. While this region, lying upstream of the S1 hypervariable region, corresponded with sites commonly identified in naturally occurring isolates, recombination sites identified in these studies could not be detected within the HVR of S1 of the genomes of chimeric viruses. Elsevier Science B.V. 1997-06 1998-08-27 /pmc/articles/PMC7126307/ /pubmed/9213388 http://dx.doi.org/10.1016/S0168-1702(97)01466-4 Text en Copyright © 1997 Elsevier Science B.V. All rights reserved. Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.
spellingShingle Article
Wang, Li
Xu, Yuan
Collisson, Ellen W
Experimental confirmation of recombination upstream of the S1 hypervariable region of infectious bronchitis virus
title Experimental confirmation of recombination upstream of the S1 hypervariable region of infectious bronchitis virus
title_full Experimental confirmation of recombination upstream of the S1 hypervariable region of infectious bronchitis virus
title_fullStr Experimental confirmation of recombination upstream of the S1 hypervariable region of infectious bronchitis virus
title_full_unstemmed Experimental confirmation of recombination upstream of the S1 hypervariable region of infectious bronchitis virus
title_short Experimental confirmation of recombination upstream of the S1 hypervariable region of infectious bronchitis virus
title_sort experimental confirmation of recombination upstream of the s1 hypervariable region of infectious bronchitis virus
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7126307/
https://www.ncbi.nlm.nih.gov/pubmed/9213388
http://dx.doi.org/10.1016/S0168-1702(97)01466-4
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