Recent Progress in Torovirus Molecular Biology

Torovirus (ToV) has recently been classified into the new family Tobaniviridae, although it belonged to the Coronavirus (CoV) family historically. ToVs are associated with enteric diseases in animals and humans. In contrast to CoVs, which are recognised as pathogens of veterinary and medical importa...

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Main Authors: Makoto Ujike, Fumihiro Taguchi
Format: Article
Language:English
Published: MDPI AG 2021-03-01
Series:Viruses
Subjects:
Online Access:https://www.mdpi.com/1999-4915/13/3/435
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author Makoto Ujike
Fumihiro Taguchi
author_facet Makoto Ujike
Fumihiro Taguchi
author_sort Makoto Ujike
collection DOAJ
description Torovirus (ToV) has recently been classified into the new family Tobaniviridae, although it belonged to the Coronavirus (CoV) family historically. ToVs are associated with enteric diseases in animals and humans. In contrast to CoVs, which are recognised as pathogens of veterinary and medical importance, little attention has been paid to ToVs because their infections are usually asymptomatic or not severe; for a long time, only one equine ToV could be propagated in cultured cells. However, bovine ToVs, which predominantly cause diarrhoea in calves, have been detected worldwide, leading to economic losses. Porcine ToVs have also spread globally; although they have not caused serious economic losses, coinfections with other pathogens can exacerbate their symptoms. In addition, frequent inter- or intra-recombination among ToVs can increase pathogenesis or unpredicted host adaptation. These findings have highlighted the importance of ToVs as pathogens and the need for basic ToV research. Here, we review recent progress in the study of ToV molecular biology including reverse genetics, focusing on the similarities and differences between ToVs and CoVs.
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spelling doaj.art-a59f42bccd624e9291f4bd65406294282023-11-21T09:39:15ZengMDPI AGViruses1999-49152021-03-0113343510.3390/v13030435Recent Progress in Torovirus Molecular BiologyMakoto Ujike0Fumihiro Taguchi1Laboratory of Veterinary Infectious Diseases, Faculty of Veterinary Medicine, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino, Tokyo 180-8602, JapanLaboratory of Veterinary Infectious Diseases, Faculty of Veterinary Medicine, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino, Tokyo 180-8602, JapanTorovirus (ToV) has recently been classified into the new family Tobaniviridae, although it belonged to the Coronavirus (CoV) family historically. ToVs are associated with enteric diseases in animals and humans. In contrast to CoVs, which are recognised as pathogens of veterinary and medical importance, little attention has been paid to ToVs because their infections are usually asymptomatic or not severe; for a long time, only one equine ToV could be propagated in cultured cells. However, bovine ToVs, which predominantly cause diarrhoea in calves, have been detected worldwide, leading to economic losses. Porcine ToVs have also spread globally; although they have not caused serious economic losses, coinfections with other pathogens can exacerbate their symptoms. In addition, frequent inter- or intra-recombination among ToVs can increase pathogenesis or unpredicted host adaptation. These findings have highlighted the importance of ToVs as pathogens and the need for basic ToV research. Here, we review recent progress in the study of ToV molecular biology including reverse genetics, focusing on the similarities and differences between ToVs and CoVs.https://www.mdpi.com/1999-4915/13/3/435toroviruscoronavirusenteric diseasesreplicationtranscriptionnon-structural proteins
spellingShingle Makoto Ujike
Fumihiro Taguchi
Recent Progress in Torovirus Molecular Biology
Viruses
torovirus
coronavirus
enteric diseases
replication
transcription
non-structural proteins
title Recent Progress in Torovirus Molecular Biology
title_full Recent Progress in Torovirus Molecular Biology
title_fullStr Recent Progress in Torovirus Molecular Biology
title_full_unstemmed Recent Progress in Torovirus Molecular Biology
title_short Recent Progress in Torovirus Molecular Biology
title_sort recent progress in torovirus molecular biology
topic torovirus
coronavirus
enteric diseases
replication
transcription
non-structural proteins
url https://www.mdpi.com/1999-4915/13/3/435
work_keys_str_mv AT makotoujike recentprogressintorovirusmolecularbiology
AT fumihirotaguchi recentprogressintorovirusmolecularbiology