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Improvement of nested reverse transcription-polymerase chain reaction (RT-PCR) with high specificity and sensitivity detection of sapovirus in food matrix

Authors
Jung, SoontagYeo, DaseulWang, ZhaoqiWoo, SeoyoungSeo, YeeunHossain, Md. IqbalRhee, Min SukChoi, Changsun
Issue Date
11월-2022
Publisher
ELSEVIER
Keywords
Sapovirus; Nested RT-PCR; Oyster; Food safety
Citation
JOURNAL OF VIROLOGICAL METHODS, v.309
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF VIROLOGICAL METHODS
Volume
309
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/145646
DOI
10.1016/j.jviromet.2022.114609
ISSN
0166-0934
Abstract
Sapovirus (SaV) is a causative agent of human gastroenteritis in both community outbreaks and sporadic cases worldwide. Shellfish accumulate a variety of pathogens during filter feeding. In particular, the contamination of shellfish by SaV has caused several outbreaks. As reported previously, nested RT-PCR (nRT-PCR) has been widely used in clinical samples, but has not proven suitable for food samples, such as oysters. This study aimed to identify a primer set for the detection of SaV with high specificity and sensitivity in food samples. To accomplish this, primers were improved in RNA-dependent RNA polymerase (RdRp) regions of SaV whole genome se-quences. The sensitivity of the improved nRT-PCR was 100-1000 times higher than that of previous nRT-PCR and > 10 times higher than that of the previous real-time RT-PCR assay. Notably, cross-reaction with other viruses or food matrices was not observed by the specificity test. This study improved the reliable primer set to detect SaV in various food matrices with high sensitivity.
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