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Sapoviruses, like noroviruses, are single-stranded positive-sense RNA viruses classified in the family and are recognized as a causative pathogen of diarrhea in infants and the elderly. Like human norovirus, human sapovirus (HuSaV) has long been difficult to replicate in vitro. Recently, it has been reported that HuSaV can be replicated in vitro by using intestinal epithelial cells (IECs) derived from human tissues and cell lines derived from testicular and duodenal cancers. In this study, we report that multiple genotypes of HuSaV can sufficiently infect and replicate in human-induced pluripotent stem cell-derived IECs. We also show that this HuSaV replication system can be used to investigate the conditions for inactivation of HuSaV by heat and alcohol, and the effects of virus neutralization of antisera obtained by immunization with vaccine antigens, under conditions closer to the living environment. The results of this study confirm that HuSaV can also infect and replicate in human normal IECs regardless of their origin and are expected to contribute to future virological studies.
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http://dx.doi.org/10.3390/v15091929 | DOI Listing |
Food Environ Virol
August 2025
Hebei Key Laboratory of Environment and Human Health, School of Public Health, Hebei Medical University, No. 361, Zhongshan East Road, Shijiazhuang, 050017, China.
Hepatitis E virus (HEV), human astrovirus (HAstV), and sapovirus (SaV) are pathogens associated with foodborne disease outbreaks. We developed a rapid and sensitive quadruple real-time fluorescence quantitative PCR (RT-qPCR) method for the simultaneous detection of HEV, HAstV, and SaV, using MS2 phage as a process control virus. We optimized the experimental parameters, detection limits for HEV, HAstV, SaV, and MS2 RNA were 10 copies/μL, 10 copies/μL, 10 copies/μL, and 10 copies/μL, respectively, with intra-method and inter-method coefficients of variation below 3.
View Article and Find Full Text PDFCurr Opin Infect Dis
October 2025
Division of Infectious Diseases, Department of Medicine, Wayne State University, Detroit, Michigan, USA.
Purpose Of Review: Diarrhea is a frequent and diagnostically challenging complication in hematopoietic stem cell transplant (HSCT) recipients, with etiologies ranging from conditioning-related mucosal injury to opportunistic infections. This review highlights the growing role of multiplex PCR-based gastrointestinal diagnostics and presents a transplant phase-specific framework for evaluating infectious diarrhea. The topic is timely given the increasing use of molecular assays and the clinical need for rapid, accurate pathogen identification in immunocompromised patients.
View Article and Find Full Text PDFViruses
July 2025
Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute/Fiocruz, Rio de Janeiro 21040-900, Brazil.
CrAssphage, a bacteriophage that infects human gut-associated spp., has emerged as a potential anthropogenic fecal pollution indicator in environmental matrices. This study investigated the presence and concentration of crAssphages in bivalve mollusks (oysters and mussels) marketed in three cities in the state of Rio de Janeiro, Brazil, sampled from January to December 2022.
View Article and Find Full Text PDFMar Pollut Bull
November 2025
Ifremer, Unité Microbiologie Santé Environnement, LSEM, Nantes, France. Electronic address:
Human sewage is the main source of contamination of environmental waters with human enteric viruses, that can contaminate food such as shellfish. Metagenomic represents a new way of analyzing viral diversity through an a priori massive parallel sequencing approach. However, the precise identification of enteric viruses in sewage or shellfish matrices, is still challenging due to the low viral load, large diversity of viral genera and the large amounts of matrix masking viral sequences.
View Article and Find Full Text PDFJ Med Virol
July 2025
Department of Virology II, National Institute of Infectious Diseases, Japan Institute for Health Security, Tokyo, Japan.
Sapovirus (SaV) is one of the major viruses causing acute gastroenteritis. Of the 1981 fecal specimens collected through sentinel pediatric acute gastroenteritis pathogen surveillance in Mie Prefecture, Japan (2010-2022), 236 were positive for SaV, according to PCR screening. Whole or near-whole genome sequences were determined for 158 strains by next-generation sequencing.
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