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 Methodsjournal_title
Journal of virological methodsauthors
Tai HY,Sun KH,Kung SH,Liu WTdoi
10.1016/s0166-0934(01)00285-3subject
Has Abstractpub_date
2001-05-01 00:00:00pages
155-62issue
1-2eissn
0166-0934issn
1879-0984pii
S0166093401002853journal_volume
94pub_type
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