Evidence map›Paper›PMID 18953339›Full record

ArticleNature genetics2008

Single-copy insertion of transgenes in Caenorhabditis elegans.

Christian Frøkjaer-Jensen, M Wayne Davis, Christopher E Hopkins, Blake J Newman, Jason M Thummel, Søren-Peter Olesen, Morten Grunnet, Erik M Jorgensen

Open access · greenAbstract read
In one paragraph

Article in Nature genetics, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 807 papers.

0numbers the graph read from it
0cells of the map it votes in
807citing papers in PubMed
10.5field-weighted citation impact, top 1% 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

807 citing papers in PubMed, 1,272 citations in OpenAlex.

  1. Article
  2. International journal of molecular sciences · 2026
    Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Dopamine Abundance Uncouples Neurodegeneration and Lifespan in abioRxiv : the preprint server for biology · 2026
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Transsynaptic linking of calcium channels and postsynaptic receptors at a dyadic synapse.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  19. Article
  20. Article

747 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

8 authors at 4 institutions in 2 countries.

Christian Frøkjaer-JensenDepartment of Biology and Howard Hughes Medical Institute, University of Utah, 257 South 1400 East, Salt Lake City, Utah 84112, USA.
M Wayne Davis
Christopher E Hopkins
Blake J Newman
Jason M Thummel
Søren-Peter Olesen
Morten Grunnet
Erik M Jorgensen
Howard Hughes Medical Institute · USDanish National Research Foundation · DKNeuroSearch (Denmark) · DKUniversity of Utah · US

Funding

SYNAPTIC FUNCTION IN THE NEMATODE C. ELEGANSR37NS034307 · NINDS · UNIVERSITY OF UTAH · PI JORGENSEN, ERIK M · 1999 to 2009
$3.3M
Howard Hughes Medical InstituteNINDS NIH HHS R37 NS034307
6 · The paper itself

Abstract

At present, transgenes in Caenorhabditis elegans are generated by injecting DNA into the germline. The DNA assembles into a semistable extrachromosomal array composed of many copies of injected DNA. These transgenes are typically overexpressed in somatic cells and silenced in the germline. We have developed a method that inserts a single copy of a transgene into a defined site. Mobilization of a Mos1 transposon generates a double-strand break in noncoding DNA. The break is repaired by copying DNA from an extrachromosomal template into the chromosomal site. Homozygous single-copy insertions can be obtained in less than 2 weeks by injecting approximately 20 worms. We have successfully inserted transgenes as long as 9 kb and verified that single copies are inserted at the targeted site. Single-copy transgenes are expressed at endogenous levels and can be expressed in the female and male germlines.

Indexed as

Gene DosageAnimalsAnimals, Genetically ModifiedCaenorhabditis elegansDNA Transposable ElementsFemaleGerm CellsGreen Fluorescent ProteinsInjectionsMaleMutagenesis, InsertionalTransgenesDNA Transposable ElementsGreen Fluorescent Proteins

Identifiers

PMID18953339
PMCPMC2749959
OpenAlexW2079458003

What OpenQuestion holds

Textmetadata
LicenceTDM
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.