Evidence map›Paper›PMID 24748663›Full record

ArticleNucleic acids research2014

Efficient chromosomal gene modification with CRISPR/cas9 and PCR-based homologous recombination donors in cultured Drosophila cells.

Romy Böttcher, Manuel Hollmann, Karin Merk, Volker Nitschko, Christina Obermaier, Julia Philippou-Massier, Isabella Wieland, Ulrike Gaul, Klaus Förstemann

Open access · goldAbstract read
In one paragraph

Article in Nucleic acids research, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 70 papers.

0numbers the graph read from it
0cells of the map it votes in
70citing papers in PubMed
7.3field-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

70 citing papers in PubMed, 128 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. CRISPR in Nucleic Acids Research: the sequel.Nucleic acids research · 2024
    Article
  8. Generating CRISPR-edited clonal lines of culturedBiology methods & protocols · 2024
    Article
  9. Article
  10. CRISPR/Cas9-mediated knock-in inGene and genome editing · 2023
    Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article

10 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

9 authors at 1 institution in 1 country.

Romy BöttcherGene Center and Dept. of Biochemistry, Ludwig-Maximilians-Universität, Feodor-Lynen-Str. 25, D-81377 München, Germany.
Manuel HollmannGene Center and Dept. of Biochemistry, Ludwig-Maximilians-Universität, Feodor-Lynen-Str. 25, D-81377 München, Germany.
Karin MerkGene Center and Dept. of Biochemistry, Ludwig-Maximilians-Universität, Feodor-Lynen-Str. 25, D-81377 München, Germany.
Volker NitschkoGene Center and Dept. of Biochemistry, Ludwig-Maximilians-Universität, Feodor-Lynen-Str. 25, D-81377 München, Germany.
Christina ObermaierGene Center and Dept. of Biochemistry, Ludwig-Maximilians-Universität, Feodor-Lynen-Str. 25, D-81377 München, Germany.
Julia Philippou-MassierGene Center and Dept. of Biochemistry, Ludwig-Maximilians-Universität, Feodor-Lynen-Str. 25, D-81377 München, Germany.
Isabella WielandGene Center and Dept. of Biochemistry, Ludwig-Maximilians-Universität, Feodor-Lynen-Str. 25, D-81377 München, Germany.
Ulrike GaulGene Center and Dept. of Biochemistry, Ludwig-Maximilians-Universität, Feodor-Lynen-Str. 25, D-81377 München, Germany Center for Integrated Protein Science Munich (CIPSM), Ludwig-Maximilians-Universität, Feodor-Lynen-Str. 25, D-81377 München, Germany.
Klaus FörstemannGene Center and Dept. of Biochemistry, Ludwig-Maximilians-Universität, Feodor-Lynen-Str. 25, D-81377 München, Germany Foerstemann@genzentrum.lmu.de.
Ludwig-Maximilians-Universität München · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The ability to edit the genome is essential for many state-of-the-art experimental paradigms. Since DNA breaks stimulate repair, they can be exploited to target site-specific integration. The clustered, regularly interspaced, short palindromic repeats (CRISPR)/cas9 system from Streptococcus pyogenes has been harnessed into an efficient and programmable nuclease for eukaryotic cells. We thus combined DNA cleavage by cas9, the generation of homologous recombination donors by polymerase chain reaction (PCR) and transient depletion of the non-homologous end joining factor lig4. Using cultured Drosophila melanogaster S2-cells and the phosphoglycerate kinase gene as a model, we reached targeted integration frequencies of up to 50% in drug-selected cell populations. Homology arms as short as 29 nt appended to the PCR primer resulted in detectable integration, slightly longer extensions are beneficial. We confirmed established rules for S. pyogenes cas9 sgRNA design and demonstrate that the complementarity region allows length variation and 5'-extensions. This enables generation of U6-promoter fusion templates by overlap-extension PCR with a standardized protocol. We present a series of PCR template vectors for C-terminal protein tagging and clonal Drosophila S2 cell lines with stable expression of a myc-tagged cas9 protein. The system can be used for epitope tagging or reporter gene knock-ins in an experimental setup that can in principle be fully automated.

Indexed as

CRISPR-Cas SystemsHomologous RecombinationPolymerase Chain ReactionAnimalsCell LineChromosomes, InsectCRISPR-Associated ProteinsDeoxyribonucleasesDNA CleavageDrosophila melanogasterPoint MutationPromoter Regions, GeneticRNA, Small NuclearRNA, Small UntranslatedStreptococcus pyogenesCRISPR-Associated ProteinsDeoxyribonucleasesRNA, Small NuclearRNA, Small UntranslatedU6 small nuclear RNA

Identifiers

PMID24748663
PMCPMC4066747
OpenAlexW2114773348

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.