Abstract
The Long INterspersed Element-1 (LINE-1 or L1) retrotransposition assay has facilitated the discovery and characterization of active (i.e., retrotransposition-competent) LINE-1 sequences from mammalian genomes. In this assay, an engineered LINE-1 containing a retrotransposition reporter cassette is transiently transfected into a cultured cell line. Expression of the reporter cassette, which occurs only after a successful round of retrotransposition, allows the detection and quantification of the LINE-1 retrotransposition efficiency. This assay has yielded insight into the mechanism of LINE-1 retrotransposition. It also has provided a greater understanding of how the cell regulates LINE-1 retrotransposition and how LINE-1 retrotransposition impacts the structure of mammalian genomes. Below, we provide a brief introduction to LINE-1 biology and then detail how the LINE-1 retrotransposition assay is performed in cultured mammalian cells.
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Acknowledgements
The authors would like to thank Nancy Leff for helpful comments during the preparation of this manuscript. This work was supported in part by NIH grant GM060518 to J.V.M. The authors were supported in part by fellowships from the American Cancer Society #PF-07-059-01GMC (H.C.K.), NIGMS #5-T32-GM07544 (P.A.L. and S.R.R.), and NIGMS #T32-GM007315 (J.B.M.). J.V.M. is an investigator of the Howard Hughes Medical Institute.
Conflict of Interest
J.V.M. is an inventor on the patent: “Kazazian, H.H., Boeke, J.D., Moran, J.V., and Dombrowski, B.A. Compositions and methods of use of mammalian retrotransposons. Application No. 60/006,831; Patent No. 6,150,160; Issued November 21, 2000.” J.V.M. has not made any money from this patent and voluntarily discloses this information.
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Kopera, H.C., Larson, P.A., Moldovan, J.B., Richardson, S.R., Liu, Y., Moran, J.V. (2016). LINE-1 Cultured Cell Retrotransposition Assay. In: Garcia-Pérez, J. (eds) Transposons and Retrotransposons. Methods in Molecular Biology, vol 1400. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-3372-3_10
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DOI: https://doi.org/10.1007/978-1-4939-3372-3_10
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