Zhang N, Liu XF, Li JG. Culture and identification of TTV virus associated with human chronic gastritis.
Shijie Huaren Xiaohua Zazhi 2013;
21:2091-2095. [DOI:
10.11569/wcjd.v21.i21.2091]
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Abstract
AIM: To develop a suitable proliferative cell culture system for chronic gastritis-related tiny virus, and to identify the type of this virus.
METHODS: The gastric adenocarcinoma cell line SGC-7901 was used to culture the tiny virus, and cells were observed by inverted microscopy and transmission electron microscopy (TEM). The primers for transfusion transmitted virus (TTV) and human parvovirus B19 were used to amplify DNA from the tiny virus.
RESULTS: After three blind passages in SGC-7901 cells, the tiny virus could proliferate in vitro and produce obvious CPE. TEM analysis showed that TTV was distributed in the nucleus and cytoplasm. The virions were globular, approximately 20 nm in size. PCR analysis showed that the tiny virus specimens were TTV DNA amplification-positive.
CONCLUSION: SGC-7901 cells can be used as a proliferation system for tiny virus. The tiny virus and TTV virus belong to the same genus.
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