Lack of norovirus replication and histo-blood group antigen expression in 3-dimensional intestinal epithelial cells.
Lack of norovirus replication and histo-blood group antigen expression in 3-dimensional intestinal epithelial cells.
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DOI:
10.3201/eid1903.121029
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发表时间:
2013-03
影响因子:
11.8
通讯作者:
Nickerson CA
中科院分区:
文献类型:
--
作者:
Herbst-Kralovetz MM;Radtke AL;Lay MK;Hjelm BE;Bolick AN;Sarker SS;Atmar RL;Kingsley DH;Arntzen CJ;Estes MK;Nickerson CA
TOC summary: The 3-dimensional intestinal model is not sufficient as a virus replication system for developing vaccines or drugs to control human norovirus infections. Noroviruses (NoVs) are a leading cause of gastroenteritis worldwide. An in vitro model for NoV replication remains elusive, making study of the virus difficult. A previous study, which used a 3-dimensional (3-D) intestinal model derived from INT-407 cells reported NoV replication and extensive cytopathic effects (CPE). Using the same 3-D model, but with highly purified Norwalk virus (NV), we attempted to replicate this study. Our results showed no evidence of NV replication by real-time PCR of viral RNA or by immunocytochemical detection of viral structural and nonstructural proteins. Immunocytochemical analysis of the 3-D cultures also showed no detectable presence of histo-blood group antigens that participate in NV binding and host tropism. To determine the potential cause of CPE observed in the previous study, we exposed 3-D cultures to lipopolysaccharide concentrations consistent with contaminated stool samples and observed morphologic features similar to CPE. We conclude that the 3-D INT-407 model does not support NV replication.
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