Evidence map›Paper›PMID 20676085›Full record

ArticleNature chemical biology2010

Replication-dependent instability at (CTG) x (CAG) repeat hairpins in human cells.

Guoqi Liu, Xiaomi Chen, John J Bissler, Richard R Sinden, Michael Leffak

Abstract read
In one paragraph

Article in Nature chemical biology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 102 papers.

0numbers the graph read from it
0cells of the map it votes in
102citing papers in PubMed
–field-weighted citation impact
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

102 citing papers in PubMed.

  1. Review
  2. Review
  3. Review
  4. Emerging drivers of DNA repeat expansions.Biochemical Society transactions · 2025
    Review
  5. Article
  6. Article
  7. Review
  8. Review
  9. Article
  10. Review
  11. Article
  12. Review
  13. Article
  14. Creation and resolution of non-B-DNA structural impediments during replication.Critical reviews in biochemistry and molecular biology · 2022
    Article
  15. Article
  16. Article
  17. Huntington disease update: new insights into the role of repeat instability in disease pathogenesis.Medizinische Genetik : Mitteilungsblatt des Berufsverbandes Medizinische Genetik e.V · 2021
    Article
  18. Article
  19. Review
  20. Article

42 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.

Guoqi LiuDepartment of Biochemistry and Molecular Biology, Boonshoft School of Medicine, Wright State University, Dayton, Ohio, USA.
Xiaomi Chen
John J Bissler
Richard R Sinden
Michael Leffak

Funding

HUMAN C MYC GENE REPLICATION ORIGINR01GM053819 · NIGMS · WRIGHT STATE UNIVERSITY · PI LEFFAK, MICHAEL · 1996 to 2012
$3.3M
DNA Replication Fork: Pausing, Recombination and DiseaseR01DK061458 · NIDDK · CINCINNATI CHILDRENS HOSP MED CTR · PI BISSLER, JOHN J · 2003 to 2007
$1.2M
Second-site genetic modifiers of CTG/CAG microsatellite stabilityR01GM099874 · NIGMS · WRIGHT STATE UNIVERSITY · PI LEFFAK, MICHAEL · 2012 to 2015
$1.1M
NIDDK NIH HHS DK61458NIDDK NIH HHS R01 DK061458NIGMS NIH HHS GM53819NIGMS NIH HHS R01 GM053819NIGMS NIH HHS R01 GM099874
6 · The paper itself

Abstract

Instability of (CTG) x (CAG) microsatellite trinucleotide repeat (TNR) sequences is responsible for more than a dozen neurological or neuromuscular diseases. TNR instability during DNA synthesis is thought to involve slipped-strand or hairpin structures in template or nascent DNA strands, although direct evidence for hairpin formation in human cells is lacking. We have used targeted recombination to create a series of isogenic HeLa cell lines in which (CTG) x (CAG) repeats are replicated from an ectopic copy of the Myc (also known as c-myc) replication origin. In this system, the tendency of chromosomal (CTG) x (CAG) tracts to expand or contract was affected by origin location and the leading or lagging strand replication orientation of the repeats, and instability was enhanced by prolonged cell culture, increased TNR length and replication inhibition. Hairpin cleavage by synthetic zinc finger nucleases in these cells has provided the first direct evidence for the formation of hairpin structures during replication in vivo.

Indexed as

Microsatellite InstabilityNucleic Acid ConformationCells, CulturedDNADNA ReplicationEndonucleasesHeLa CellsHumansPolymerase Chain ReactionProto-Oncogene Proteins c-mycReplication OriginTrinucleotide RepeatsZinc FingersDNAEndonucleasesProto-Oncogene Proteins c-myc

Identifiers

PMID20676085
PMCPMC2924473

What OpenQuestion holds

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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.