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CRISPR/Cas9 screens identify key host factors that enhance rotavirus reverse genetics efficacy and vaccine production.

CRISPR/Cas9 screens identify key host factors that enhance rotavirus reverse genetics efficacy and vaccine production.

Authors :
Zhu Y
Sullender ME
Campbell DE
Wang L
Lee S
Kawagishi T
Hou G
Dizdarevic A
Jais PH
Baldridge MT
Ding S
Source :
NPJ vaccines [NPJ Vaccines] 2024 Nov 06; Vol. 9 (1), pp. 211. Date of Electronic Publication: 2024 Nov 06.
Publication Year :
2024

Abstract

Rotaviruses pose a significant threat to young children. To identify novel pro- and anti-rotavirus host factors, we performed genome-wide CRISPR/Cas9 screens using rhesus rotavirus and African green monkey cells. Genetic deletion of either SERPINB1 or TMEM236, the top two antiviral factors, in MA104 cells increased virus titers in a rotavirus strain independent manner. Using this information, we optimized the existing rotavirus reverse genetics systems by combining SERPINB1 knockout MA104 cells with a C3P3-G3 helper plasmid. We improved the recovery efficiency and rescued several low-titer rotavirus reporter and mutant strains that prove difficult to rescue otherwise. Furthermore, we demonstrate that TMEM236 knockout in Vero cells supported higher yields of two live-attenuated rotavirus vaccine strains than the parental cell line and represents a more robust vaccine-producing cell substrate. Collectively, we developed a third-generation optimized rotavirus reverse genetics system and generated gene-edited Vero cells as a new substrate for improving rotavirus vaccine production.<br /> (© 2024. The Author(s).)

Details

Language :
English
ISSN :
2059-0105
Volume :
9
Issue :
1
Database :
MEDLINE
Journal :
NPJ vaccines
Publication Type :
Academic Journal
Accession number :
39505878
Full Text :
https://doi.org/10.1038/s41541-024-01007-7