Persistent infection of SARS coronavirus in colonic cells in vitro
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摘要Severe acute respiratory syndrome coronavirus (SARS-CoV) can produce gastrointestinal symptoms. The intestinal tract is the only extrapulmonary site where viable viruses have been detected. This study examined seven established human intestinal cell lines, DLD-1, HICT-116, HT-29, LoVo, LS-180, SW-480 and SW-620, for their permissiveness to SARS-CoV infection. The results showed that only LoVo cells were permissive to SARS-CoV infection as evident by positive findings from indirect immunofluorescence staining for intracellular viral antigens, in situ hybridization for intracellular viral RNA, and electron microscopy for intracellular viral particles. In contrast to Vero cells, SARS-CoV did not produce cytopathic effects on LoVo cells. However, LoVo cells were found to be highly permissive for productive infection with a high viral titre (>3 x 10(7) viral copies/ml) produced in culture supernatant following a few days of incubation. SARS-CoV established a stable persistent chronic infection that could be maintained after multiple passages. Being a cell line of human origin LoVo cells could be a useful in vitro model for studying the biology and persistent infection of SARS-CoV. Our results on the expression of angiotensin-converting enzyme 2 (ACE2), a recently identified cellular receptor for SARS-CoV, in these cell lines indicated that it might not be the sole determinant for cells to be susceptible to SARS-CoV infection. (C) 2004 Wiley-Liss, Inc.
著者Chan PKS, To KF, Lo AWI, Cheung JLK, Chu I, Au FWL, Tong JHM, Tam JS, Sung JJY, Ng HK
期刊名稱Journal of Medical Virology
出版年份2004
月份9
日期1
卷號74
期次1
出版社WILEY-LISS
頁次1 - 7
國際標準期刊號0146-6615
電子國際標準期刊號1096-9071
語言英式英語
關鍵詞ACE2; coronavirus; in vitro; persistent infection; receptor; SARS
Web of Science 學科類別Virology; VIROLOGY

上次更新時間 2020-29-09 於 00:59