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An Improved αvβ6-Receptor-Expressing Suspension Cell Line for Foot-and-Mouth Disease Vaccine Production

Foot-and-mouth disease (FMD) is endemic in large parts of sub-Saharan Africa, Asia and South America, where outbreaks in cloven-hooved livestock threaten food security and have severe economic impacts. Vaccination in endemic regions remains the most effective control strategy. Current FMD vaccines a...

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Autores principales: Harvey, Yongjie, Jackson, Ben, Carr, Brigid Veronica, Childs, Kay, Moffat, Katy, Freimanis, Graham, Tennakoon, Chandana, Juleff, Nicholas, Seago, Julian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8951101/
https://www.ncbi.nlm.nih.gov/pubmed/35337028
http://dx.doi.org/10.3390/v14030621
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author Harvey, Yongjie
Jackson, Ben
Carr, Brigid Veronica
Childs, Kay
Moffat, Katy
Freimanis, Graham
Tennakoon, Chandana
Juleff, Nicholas
Seago, Julian
author_facet Harvey, Yongjie
Jackson, Ben
Carr, Brigid Veronica
Childs, Kay
Moffat, Katy
Freimanis, Graham
Tennakoon, Chandana
Juleff, Nicholas
Seago, Julian
author_sort Harvey, Yongjie
collection PubMed
description Foot-and-mouth disease (FMD) is endemic in large parts of sub-Saharan Africa, Asia and South America, where outbreaks in cloven-hooved livestock threaten food security and have severe economic impacts. Vaccination in endemic regions remains the most effective control strategy. Current FMD vaccines are produced from chemically inactivated foot-and-mouth disease virus (FMDV) grown in suspension cultures of baby hamster kidney 21 cells (BHK-21). Strain diversity means vaccines produced from one subtype may not fully protect against circulating disparate subtypes, necessitating the development of new vaccine strains that “antigenically match”. However, some viruses have proven difficult to adapt to cell culture, slowing the manufacturing process, reducing vaccine yield and limiting the availability of effective vaccines, as well as potentiating the selection of undesired antigenic changes. To circumvent the need to cell culture adapt FMDV, we have used a systematic approach to develop recombinant suspension BHK-21 that stably express the key FMDV receptor integrin αvβ6. We show that αvβ6 expression is retained at consistently high levels as a mixed cell population and as a clonal cell line. Following exposure to field strains of FMDV, these recombinant BHK-21 facilitated higher virus yields compared to both parental and control BHK-21, whilst demonstrating comparable growth kinetics. The presented data supports the application of these recombinant αvβ6-expressing BHK-21 in future FMD vaccine production.
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spelling pubmed-89511012022-03-26 An Improved αvβ6-Receptor-Expressing Suspension Cell Line for Foot-and-Mouth Disease Vaccine Production Harvey, Yongjie Jackson, Ben Carr, Brigid Veronica Childs, Kay Moffat, Katy Freimanis, Graham Tennakoon, Chandana Juleff, Nicholas Seago, Julian Viruses Article Foot-and-mouth disease (FMD) is endemic in large parts of sub-Saharan Africa, Asia and South America, where outbreaks in cloven-hooved livestock threaten food security and have severe economic impacts. Vaccination in endemic regions remains the most effective control strategy. Current FMD vaccines are produced from chemically inactivated foot-and-mouth disease virus (FMDV) grown in suspension cultures of baby hamster kidney 21 cells (BHK-21). Strain diversity means vaccines produced from one subtype may not fully protect against circulating disparate subtypes, necessitating the development of new vaccine strains that “antigenically match”. However, some viruses have proven difficult to adapt to cell culture, slowing the manufacturing process, reducing vaccine yield and limiting the availability of effective vaccines, as well as potentiating the selection of undesired antigenic changes. To circumvent the need to cell culture adapt FMDV, we have used a systematic approach to develop recombinant suspension BHK-21 that stably express the key FMDV receptor integrin αvβ6. We show that αvβ6 expression is retained at consistently high levels as a mixed cell population and as a clonal cell line. Following exposure to field strains of FMDV, these recombinant BHK-21 facilitated higher virus yields compared to both parental and control BHK-21, whilst demonstrating comparable growth kinetics. The presented data supports the application of these recombinant αvβ6-expressing BHK-21 in future FMD vaccine production. MDPI 2022-03-16 /pmc/articles/PMC8951101/ /pubmed/35337028 http://dx.doi.org/10.3390/v14030621 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Harvey, Yongjie
Jackson, Ben
Carr, Brigid Veronica
Childs, Kay
Moffat, Katy
Freimanis, Graham
Tennakoon, Chandana
Juleff, Nicholas
Seago, Julian
An Improved αvβ6-Receptor-Expressing Suspension Cell Line for Foot-and-Mouth Disease Vaccine Production
title An Improved αvβ6-Receptor-Expressing Suspension Cell Line for Foot-and-Mouth Disease Vaccine Production
title_full An Improved αvβ6-Receptor-Expressing Suspension Cell Line for Foot-and-Mouth Disease Vaccine Production
title_fullStr An Improved αvβ6-Receptor-Expressing Suspension Cell Line for Foot-and-Mouth Disease Vaccine Production
title_full_unstemmed An Improved αvβ6-Receptor-Expressing Suspension Cell Line for Foot-and-Mouth Disease Vaccine Production
title_short An Improved αvβ6-Receptor-Expressing Suspension Cell Line for Foot-and-Mouth Disease Vaccine Production
title_sort improved αvβ6-receptor-expressing suspension cell line for foot-and-mouth disease vaccine production
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8951101/
https://www.ncbi.nlm.nih.gov/pubmed/35337028
http://dx.doi.org/10.3390/v14030621
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