Experimental Adaptation of Murine Norovirus to Calcium Hydroxide

Slaked lime (calcium hydroxide) is a commonly used disinfectant for fecal sludge. Although viruses are inactivated by lime treatment, whether RNA viruses adapt to lime treatment has not yet been determined. Here, we show that murine norovirus developed higher tolerance during serial passages with li...

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Main Authors: Wakana Oishi, Mikiko Sato, Kengo Kubota, Ryoka Ishiyama, Reiko Takai-Todaka, Kei Haga, Kazuhiko Katayama, Daisuke Sano
Format: Article
Language:English
Published: Frontiers Media S.A. 2022-03-01
Series:Frontiers in Microbiology
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fmicb.2022.848439/full
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author Wakana Oishi
Mikiko Sato
Kengo Kubota
Kengo Kubota
Ryoka Ishiyama
Reiko Takai-Todaka
Kei Haga
Kazuhiko Katayama
Daisuke Sano
Daisuke Sano
Daisuke Sano
author_facet Wakana Oishi
Mikiko Sato
Kengo Kubota
Kengo Kubota
Ryoka Ishiyama
Reiko Takai-Todaka
Kei Haga
Kazuhiko Katayama
Daisuke Sano
Daisuke Sano
Daisuke Sano
author_sort Wakana Oishi
collection DOAJ
description Slaked lime (calcium hydroxide) is a commonly used disinfectant for fecal sludge. Although viruses are inactivated by lime treatment, whether RNA viruses adapt to lime treatment has not yet been determined. Here, we show that murine norovirus developed higher tolerance during serial passages with lime treatment. We compared synonymous and non-synonymous nucleotide diversities of the three open reading frames of viral genome and revealed that virus populations were subjected to enhanced purifying selection over the course of serial passages with lime treatment. Virus adaptation to lime treatment was coincident with amino acid substitution of lysine to arginine at position 345 (K345R) on the major capsid protein VP1, which accounted for more than 90% of the population. The infectious clones with the K345R produced using a plasmid-based reverse genetics system exhibited greater tolerance in a lime solution, which indicated that the specific amino acid substitution was solely involved in the viral tolerance in lime treatment.
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spelling doaj.art-91dbea77a9664298a0fd716a016507b12022-12-22T02:41:01ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2022-03-011310.3389/fmicb.2022.848439848439Experimental Adaptation of Murine Norovirus to Calcium HydroxideWakana Oishi0Mikiko Sato1Kengo Kubota2Kengo Kubota3Ryoka Ishiyama4Reiko Takai-Todaka5Kei Haga6Kazuhiko Katayama7Daisuke Sano8Daisuke Sano9Daisuke Sano10Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, Sendai, JapanDepartment of Frontier Sciences for Advanced Environment, Graduate School of Environmental Studies, Tohoku University, Sendai, JapanDepartment of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, Sendai, JapanDepartment of Frontier Sciences for Advanced Environment, Graduate School of Environmental Studies, Tohoku University, Sendai, JapanLaboratory of Viral Infection I, Department of Infection Control and Immunology, Ōmura Satoshi Memorial Institute & Graduate School of Infection Control Sciences, Kitasato University, Tokyo, JapanLaboratory of Viral Infection I, Department of Infection Control and Immunology, Ōmura Satoshi Memorial Institute & Graduate School of Infection Control Sciences, Kitasato University, Tokyo, JapanLaboratory of Viral Infection I, Department of Infection Control and Immunology, Ōmura Satoshi Memorial Institute & Graduate School of Infection Control Sciences, Kitasato University, Tokyo, JapanLaboratory of Viral Infection I, Department of Infection Control and Immunology, Ōmura Satoshi Memorial Institute & Graduate School of Infection Control Sciences, Kitasato University, Tokyo, JapanDepartment of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, Sendai, JapanDepartment of Frontier Sciences for Advanced Environment, Graduate School of Environmental Studies, Tohoku University, Sendai, JapanResearch Institute for Humanity and Nature, Kyoto, JapanSlaked lime (calcium hydroxide) is a commonly used disinfectant for fecal sludge. Although viruses are inactivated by lime treatment, whether RNA viruses adapt to lime treatment has not yet been determined. Here, we show that murine norovirus developed higher tolerance during serial passages with lime treatment. We compared synonymous and non-synonymous nucleotide diversities of the three open reading frames of viral genome and revealed that virus populations were subjected to enhanced purifying selection over the course of serial passages with lime treatment. Virus adaptation to lime treatment was coincident with amino acid substitution of lysine to arginine at position 345 (K345R) on the major capsid protein VP1, which accounted for more than 90% of the population. The infectious clones with the K345R produced using a plasmid-based reverse genetics system exhibited greater tolerance in a lime solution, which indicated that the specific amino acid substitution was solely involved in the viral tolerance in lime treatment.https://www.frontiersin.org/articles/10.3389/fmicb.2022.848439/fullmurine norovirusexperimental evolutiondisinfectionslaked limecalcium hydroxide
spellingShingle Wakana Oishi
Mikiko Sato
Kengo Kubota
Kengo Kubota
Ryoka Ishiyama
Reiko Takai-Todaka
Kei Haga
Kazuhiko Katayama
Daisuke Sano
Daisuke Sano
Daisuke Sano
Experimental Adaptation of Murine Norovirus to Calcium Hydroxide
Frontiers in Microbiology
murine norovirus
experimental evolution
disinfection
slaked lime
calcium hydroxide
title Experimental Adaptation of Murine Norovirus to Calcium Hydroxide
title_full Experimental Adaptation of Murine Norovirus to Calcium Hydroxide
title_fullStr Experimental Adaptation of Murine Norovirus to Calcium Hydroxide
title_full_unstemmed Experimental Adaptation of Murine Norovirus to Calcium Hydroxide
title_short Experimental Adaptation of Murine Norovirus to Calcium Hydroxide
title_sort experimental adaptation of murine norovirus to calcium hydroxide
topic murine norovirus
experimental evolution
disinfection
slaked lime
calcium hydroxide
url https://www.frontiersin.org/articles/10.3389/fmicb.2022.848439/full
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