Evidence map›Paper›PMID 1371167›Full record

ArticleJournal of virology1992

High-frequency intracellular transposition of a defective mammalian provirus detected by an in situ colorimetric assay.

T Tchenio, T Heidmann

Open access · bronzeAbstract read
In one paragraph

Article in Journal of virology, 1992. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
1.4field-weighted citation impact, top 19% 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

13 citing papers in PubMed, 23 citations in OpenAlex.

  1. Review
  2. Review
  3. Review
  4. Article
  5. Article
  6. Tumor cells expressing a retroviral envelope escape immune rejection in vivo.Proceedings of the National Academy of Sciences of the United States of America · 1998
    Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Review
  13. Article
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

2 authors at 1 institution in 1 country.

T TchenioUnités de Biochimie-Enzymologie et de Physicochimie Macromoléculaire, Centre National de la Recherche Scientifique U147, Villejuif, France.
T Heidmann
Centre de Recherche en Biologie cellulaire de Montpellier · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We devised an indicator gene for retrotransposition, nlsLacZRT, which contains the Escherichia coli lacZ gene fused to a nuclear location signal (nlsLacZ), engineered in such a way that the gene is expressed only if the structure in which it has been inserted transposes itself through an RNA intermediate. A cloned murine leukemia retrovirus with an ecotropic host range (Moloney murine leukemia virus), rendered defective by a large deletion encompassing the three viral gag, pol, and env open reading frames, was marked with this indicator gene and introduced by transfection into heterologous feline cells. No beta-galactosidase activity could be detected among the clonal cell population, unless the defective provirus was complemented in trans by the gag-pol gene products. Under these conditions, cell variants which disclosed an easily detectable nuclear blue coloration upon in situ 5-bromo-4-chloro-3-indolyl-beta-D-galactopyranoside staining were observed. Fluorescence-activated cell sorting of the beta-galactosidase-positive cells, followed by Southern blot analysis, demonstrated an unambiguous correlation between nlsLacZRT activation and retrotransposition of the marked provirus. Transposition occurs at a high frequency (up to 10(-4) events per cell per generation), which is dependent on the level of expression of the gag-pol gene and is concomitant with the release of noninfectious retroviruslike particles which are the hallmarks, but not the intermediates, of the intracellular transposition process.

Indexed as

DNA Transposable ElementsAnimalsbeta-GalactosidaseCatsCells, CulturedDefective VirusesGene Products, gagGene Products, polGenes, gagGenes, polGenetic Complementation TestIn Vitro TechniquesProvirusesRNA-Directed DNA PolymeraseTransfectionVirus Integrationbeta-GalactosidaseDNA Transposable ElementsGene Products, gagGene Products, polRNA-Directed DNA Polymerase

Identifiers

PMID1371167
PMCPMC240883
OpenAlexW1521067419

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.