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Viruses
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Viruses
Article . 2021
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Viruses
Article . 2021
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Targeted Profiling of Immunological Genes during Norovirus Replication in Human Intestinal Enteroids

Authors: Jenny C.M. Chan; Kirran N. Mohammad; Lin-Yao Zhang; Sunny H. Wong; Martin Chi-Wai Chan;

Targeted Profiling of Immunological Genes during Norovirus Replication in Human Intestinal Enteroids

Abstract

Norovirus is the leading cause of acute gastroenteritis worldwide. The pathogenesis of norovirus and the induced immune response remain poorly understood due to the lack of a robust virus culture system. The monolayers of two secretor-positive Chinese human intestinal enteroid (HIE) lines were challenged with two norovirus pandemic GII.4 Sydney strains. Norovirus RNA replication in supernatants and cell lysates were quantified by RT-qPCR. RNA expression levels of immune-related genes were profiled using PCR arrays. The secreted protein levels of shortlisted upregulated genes were measured in supernatants using analyte-specific enzyme-linked immunosorbent assay (ELISA). Productive norovirus replications were achieved in three (75%) out of four inoculations. The two most upregulated immune-related genes were CXCL10 (93-folds) and IFI44L (580-folds). Gene expressions of CXCL10 and IFI44L were positively correlated with the level of norovirus RNA replication (CXCL10: Spearman’s r = 0.779, p < 0.05; IFI44L: r = 0.881, p < 0.01). The higher level of secreted CXCL10 and IFI44L proteins confirmed their elevated gene expression. The two genes have been reported to be upregulated in norovirus volunteer challenges and natural human infections by other viruses. Our data suggested that HIE could mimic the innate immune response elicited in natural norovirus infection and, therefore, could serve as an experimental model for future virus-host interaction and antiviral studies.

Keywords

Male, human norovirus, virus–host interaction, Virus Replication, Microbiology, Models, Biological, Article, Cell Line, Humans, Aged, Caliciviridae Infections, Aged, 80 and over, Host Microbial Interactions, Sequence Analysis, RNA, Tumor Suppressor Proteins, Norovirus, Middle Aged, QR1-502, Immunity, Innate, Chemokine CXCL10, Intestines, Organoids, innate immune response, Female, Interferons, human intestinal enteroids

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
11
Top 10%
Average
Top 10%
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gold