Cited by 291Chromosomal and Genetic VariationsGenomic variations and chromosomal abnormalitiesGenome Rearrangement Algorithms

Determination of L1 retrotransposition kinetics in cultured cells

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Ostertag, E. M.·2000·Nucleic Acids Research

Abstract

L1 retrotransposons are autonomous retroelements that are active in the human and mouse genomes. Previously, we developed a cultured cell assay that uses a neomycin phosphotransferase ( neo ) retrotransposition cassette to determine relative retrotransposition frequencies among various L1 elements. Here, we describe a new retrotransposition assay that uses an enhanced green fluorescent protein (EGFP) retrotransposition cassette to determine retrotransposition kinetics in cultured cells. We show that retrotransposition is not detected in cultured cells during the first 48 h post-transfection, but then proceeds at a continuous high rate for at least 16 days. We also determine the relative retrotransposition rates of two similar human L1 retrotransposons, L1(RP)and L1.3. L1(RP)retrotransposed in the EGFP assay at a rate of approximately 0.5% of transfected cells/day, approximately 3-fold higher than the rate measured for L1.3. We conclude that the new assay detects near real time retrotransposition in a single cell and is sufficiently sensitive to differentiate retrotransposition rates among similar L1 elements. The EGFP assay exhibits improved speed and accuracy compared to the previous assay when used to determine relative retrotransposition frequencies. Furthermore, the EGFP cassette has an expanded range of experimental applications.

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  1. Jurka,J. (1997) Proc. Natl Acad. Sci. USA, 94, 1872-1877.
  2. Heidmann,T., Heidmann,O. and Nicolas,J.-F. (1988) Proc. Natl Acad. Sci. USA, 85, 2219-2223.
  3. Curcio,M.J. and Garfinkel,D.J. (1991) Proc. Natl Acad. Sci. USA, 88, 936-940.
  4. DeBerardinis,R.J. (1998) PhD thesis, University of Pennsylvania.
  5. Chaboissier,M.-C., Bucheton,A. and Finnegan,D.J. (1998) Proc. Natl Acad. Sci. USA, 95, 11781-11785.

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Authors
Ostertag, E. M.
Affiliations
University of Pennsylvania (US)
Corresponding author
Ostertag, E. M.
Venue
Nucleic Acids Research
Published
2000-03-15
Volume
28
Issue
6
Pages
1418-1423
ISSN
  • 0305-1048 (ISSN-L)
  • 1362-4962
OpenAlex
W2150649207
Cited by
291
References
29
Citations by year
2026: 8 · 2025: 16 · 2024: 10 · 2023: 9 · 2022: 16 · 2021: 12 · 2020: 15 · 2019: 17 · 2018: 14 · 2017: 21 · 2016: 11 · 2015: 9 · 2014: 7 · 2013: 17 · 2012: 9
FWCI
8.97
Type
journal article
Language
en
Open access
Locations
  • Nucleic Acids Research (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • University of Pennsylvania
  • National Institutes of Health
Topics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Chromosomal and Genetic Variations
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genomic variations and chromosomal abnormalities
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genome Rearrangement Algorithms
Keywords
LINE-1 retrotransposons, cultured cells, transposable elements
MeSH terms
Cinnamates, Drug Resistance, False Positive Reactions, Globins, HeLa Cells, Humans, Hygromycin B, Introns, Kinetics, Luminescent Proteins, Microscopy, Fluorescence, Puromycin, Recombination, Genetic, RNA Splicing, Sensitivity and Specificity, Time Factors, Transfection, Mutagenesis, Insertional, Genes, Reporter, Retroelements, 3' Untranslated Regions, Green Fluorescent Proteins

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