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A quantitative assay for measuring human foamy virus using an established indicator cell line.

Abstract：

:In order to improve the accuracy for detecting human foamy virus (HFV), an indicator cell line was established by co-transfecting baby hamster kidney-21 cells with two plasmids: one containing a G418 antibiotic resistance marker and the other including the luc gene which was placed downstream of the inducible HFV long terminal repeat promoter (from -533 to +20). Among 11 independent subclones, IdB14 was found to be stable with a low basal level of luciferase activity. Although the changes in luciferase activity in infected clones showed time-dependency and peaked at day 8, it is possible to differentiate infected and uninfected cells on day 2. The sensitivity of the foamy virus activated luciferase (FAL) assay was 400 times higher than the end-point syncytium formation by TCID(50). The HFV LTR promoter in the IdB14 cell line was specific for this virus. Moreover, a linear relationship was found between the MOI and the activated intensity of luciferase expression. These findings suggest that the FAL assay using the IdB14 indicator cell line is a simple and useful technique for rapid diagnosis and quantitation of active HFV infection.

journal_name

J Virol Methods

journal_title

Journal of virological methods

authors

Tai HY,Sun KH,Kung SH,Liu WT

doi

10.1016/s0166-0934(01)00285-3

subject

Has Abstract

pub_date

2001-05-01 00:00:00

pages

155-62

issue

1-2

eissn

0166-0934

issn

1879-0984

pii

S0166093401002853

journal_volume

94

pub_type

杂志文章

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