Evidence map›Paper›PMID 10684937›Full record

ArticleNucleic acids research2000

Determination of L1 retrotransposition kinetics in cultured cells.

E M Ostertag, E T Prak, R J DeBerardinis, J V Moran, H H Kazazian

Open access · bronzeAbstract read
In one paragraph

Article in Nucleic acids research, 2000. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 181 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
181citing papers in PubMed, 1 pooled it
9.3field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

181 citing papers in PubMed, 1 synthesis or guideline pooled it, 294 citations in OpenAlex.

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121 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

E M OstertagDepartment of Genetics, University of Pennsylvania School of Medicine, Philadelphia, PA 19104, USA.
E T Prak
R J DeBerardinis
J V Moran
H H Kazazian
University of Pennsylvania · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

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.

Indexed as

Cinnamates3' Untranslated RegionsDrug ResistanceFalse Positive ReactionsGenes, ReporterGlobinsGreen Fluorescent ProteinsHeLa CellsHumansHygromycin BIntronsKineticsLuminescent ProteinsMicroscopy, FluorescenceMutagenesis, InsertionalPuromycin3' Untranslated RegionsCinnamatesGlobinsGreen Fluorescent Proteinshygromycin AHygromycin BLuminescent ProteinsPuromycinRetroelements

Identifiers

PMID10684937
PMCPMC111040
OpenAlexW2150649207

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.