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Citations Search

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Nucl. Acids Res. 39(3), e16. Characterization of L1 retrotransposition with high-throughput dual-luciferase assays. 2011

Xie, Y., Rosser, J.M., Thompson, T.L., Boeke, J.D., and Wenfeng, A.

Notes: This paper describes a rapid dual-luciferase-based assay for L1 retrotransposition that is amenable to high-throughput screening. A firefly luciferase vector in which the luciferase gene was disrupted by an antisense intron was constructed by introducing a 900-bp fragment of the human γ-globin intron into pGL4.13. This Fluc gene, interrupted by an antisense intron, gives only minimal luciferase expression unless the luciferase gene is restored by a retrotransposition event. The authors also tested a similar retrotransposition reporter using the pGL4.73 Renilla luciferase vector, but found that the firefly construct gave much higher signals. They therefore used the firefly luciferase retrotransposition reporter, a Renilla luciferase normalization control and the Dual-Luciferase® Assay to characterize profiles of retrotransposition by various human and mouse L1 elements, and to measure the kinetics of L1 retrotransposition in cultured cells. The GloMax® Multi Luminometer was used to quantify luciferase activity. (4205)

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J. Virol. 81, 558–567. Hijacking components of the cellular secretory pathway for replication of poliovirus RNA. 2007

Belov, G.A., Altan-Bonnet, N., Kovtunovych, G., Jackson, C.L., Lippincott-Schwartz, J. and Ehrenfeld, E.

Notes: In this study, the Renilla luciferase gene from the phRL-CMV Vector was incorporated into polioviral RNA in place of a structural protein-coding region. Renilla luciferase activity was then monitored as a convenient indicator of viral replication. Specifically, these authors tested whether the guanine nucleotide exchange factors GBF1 and BIG2 could rescue brefeldin A (BFA)-induced inhibition of polioviral replication in HeLa cells. Cells were transfected with plasmids encoding either GBF1 or BIG2, together with the firefly-luciferase-encoding pGL4.13 Vector, which was used as a control to monitor transfection efficiency. Eighteen hours post-transfection, the cells were transfected with polioviral replicon RNA containing the Renilla luciferase gene. One hour later, normal growth medium containing EnduRen® Live Cell Substrate and either BFA or solvent alone, was added and Renilla luciferase activity was monitored at hourly intervals for 7 hours. Cells were then lysed and firefly luciferase activity was measured to assess transfection efficiency using the Dual-Glo® Luciferase Assay System System. In the presence of BFA, GBF1 was able to partially rescue viral replication. In the presence of BIG2 and BFA, no viral replication occurred. (3562)

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