Evidence map›Paper›PMID 31114605›Full record

ArticleFrontiers in genetics2019

Enhancement of Precise Gene Editing by the Association of Cas9 With Homologous Recombination Factors.

Ngoc-Tung Tran, Sanum Bashir, Xun Li, Jana Rossius, Van Trung Chu, Klaus Rajewsky, Ralf Kühn

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in Frontiers in genetics, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 50 papers.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed
4.3field-weighted citation impact, top 5% 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

50 citing papers in PubMed, 77 citations in OpenAlex.

  1. Article
  2. A modified CRISPR/Cas9 approach in silencing the triplication in Down syndrome: A treatment path XISTs.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  3. CRISPR and the Future of Cardiac Disease Therapy: A New Genetic Frontier.International journal of molecular sciences · 2026
    Review
  4. Review
  5. Article
  6. Review
  7. Article
  8. Article
  9. Recent advances in therapeutic gene-editing technologies.Molecular therapy : the journal of the American Society of Gene Therapy · 2025
    Review
  10. Article
  11. Article
  12. Promotion or inhibition? This is a question in gene editing.Molecular therapy : the journal of the American Society of Gene Therapy · 2025
    Article
  13. Review
  14. Review
  15. Review
  16. Article
  17. Review
  18. Strategies for precise gene edits in mammalian cells.Molecular therapy. Nucleic acids · 2023
    Review
  19. Review
  20. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 2 institutions in 1 country.

Ngoc-Tung TranMax-Delbrück-Centrum für Molekulare Medizin, Berlin, Germany.
Sanum BashirMax-Delbrück-Centrum für Molekulare Medizin, Berlin, Germany.
Xun LiMax-Delbrück-Centrum für Molekulare Medizin, Berlin, Germany.
Jana RossiusMax-Delbrück-Centrum für Molekulare Medizin, Berlin, Germany.
Van Trung ChuMax-Delbrück-Centrum für Molekulare Medizin, Berlin, Germany.
Klaus RajewskyMax-Delbrück-Centrum für Molekulare Medizin, Berlin, Germany.
Ralf KühnMax-Delbrück-Centrum für Molekulare Medizin, Berlin, Germany.
Berlin Institute of Health at Charité - Universitätsmedizin Berlin · DEMax Delbrück Center · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The CRISPR-Cas9 system is used for genome editing in mammalian cells by introducing double-strand breaks (DSBs) which are predominantly repaired via non-homologous end joining (NHEJ) or to lesser extent by homology-directed repair (HDR). To enhance HDR for improving the introduction of precise genetic modifications, we tested fusion proteins of Cas9 nuclease with HDR effectors to enforce their localization at DSBs. Using a traffic-light DSB repair reporter (TLR) system for the quantitative detection of HDR and NHEJ events in human HEK cells we found that Cas9 fusions with CtIP, Rad52, and Mre11, but not Rad51C promote HDR up to twofold in human cells and significantly reduce NHEJ events. We further compared, as an alternative to the direct fusion with Cas9, two components configurations that associate CtIP fusion proteins with a Cas9-SunTag fusion or with guide RNA that includes MS2 binding loops. We found that the Cas9-CtIP fusion and the MS2-CtIP system, but not the SunTag approach increase the ratio of HDR/NHEJ 4.5-6-fold. Optimal results are obtained by the combined use of Cas9-CtIP and MS2-CtIP, shifting the HDR/NHEJ ratio by a factor of 14.9. Thus, our findings provide a simple and effective tool to promote precise gene modifications in mammalian cells.

Indexed as

Cas9CRISPRCtIPgene editinghomologous recombination

Identifiers

PMID31114605
PMCPMC6503098
OpenAlexW2935121891

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.