Cited by 72DNA Repair MechanismsBlood disorders and treatmentsGenetic factors in colorectal cancer

Fanconi anemia group J mutation abolishes its DNA repair function by uncoupling DNA translocation from helicase activity or disruption of protein-DNA complexes

Open access
Wu, Yuliang, Sommers, Joshua A., Suhasini, Avvaru N., Leonard, Thomas, Deakyne, Julianna S., Mazin, Alexander V., Shin-ya, Kazuo, Kitao, Hiroyuki +1 more·2010·Blood

Abstract

Fanconi anemia (FA) is a genetic disease characterized by congenital abnormalities, bone marrow failure, and susceptibility to leukemia and other cancers. FANCJ, one of 13 genes linked to FA, encodes a DNA helicase proposed to operate in homologous recombination repair and replicational stress response. The pathogenic FANCJ-A349P amino acid substitution resides immediately adjacent to a highly conserved cysteine of the iron-sulfur domain. Given the genetic linkage of the FANCJ-A349P allele to FA, we investigated the effect of this particular mutation on the biochemical and cellular functions of the FANCJ protein. Purified recombinant FANCJ-A349P protein had reduced iron and was defective in coupling adenosine triphosphate (ATP) hydrolysis and translocase activity to unwinding forked duplex or G-quadruplex DNA substrates or disrupting protein-DNA complexes. The FANCJ-A349P allele failed to rescue cisplatin or telomestatin sensitivity of a FA-J null cell line as detected by cell survival or γ-H2AX foci formation. Furthermore, expression of FANCJ-A349P in a wild-type background exerted a dominant-negative effect, indicating that the mutant protein interferes with normal DNA metabolism. The ability of FANCJ to use the energy from ATP hydrolysis to produce the force required to unwind DNA or destabilize protein bound to DNA is required for its role in DNA repair.

Integrity signals

Registry

Crossref · 10.1182/blood-2009-11-256016

Cites

41 of 41 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Cancer in patients carrying P47A or M299I may have involved a dominant negative effect of the mutant FANCJ proteins.

    “Thus, cancer in these patients may have been related to the dominant negative effect of these mutant FANCJ proteins.”
  • The P47A mutant is enzymatically inactive in vitro, similar to K52R or A349P, which dominantly disrupted DNA repair when expressed in cells.

    “Consistent with this idea, the P47A mutant is enzyme inactive in vitro, similar to the helicace-inactive FANCJ mutant species, K52R, or FA-associated A349P, which dominantly disrupted DNA repair when expressed in cells [41,42].”
  • Experiments using FANCJ-null FA-J patient cells complemented with K52R or A349P demonstrated that FANCJ enzyme activity and the Fe-S domain are essential for DNA interstrand crosslink repair.

    “Experiments using FANCJ-null FA-J patient cells complemented with K52R or the A349P FA-associated mutant demonstrated that FANCJ enzyme activity and the Fe–S domain are essential for DNA interstrand crosslink repair [42,73].”
  • The breast cancer-associated P47A mutation and the FA-associated A349P mutation reduce FANCJ enzyme activity.

    “Consistent with enzyme activity being essential for tumor suppression, the breast cancer-associated mutation in helicase block II (P47A) or an FA-associated mutation in the Fe–S domain (A349P) reduced FANCJ enzyme activity [42,56,63].”
  • FA-J patient cells accumulate deletions in regions containing G4-DNA, and recombinant FANCJ A349P fails to unwind G4-DNA substrates.

    “In support of this function, FA-J patient cells accumulate deletions in regions containing G4-DNA, and the recombinant FANCJ A349P mutant protein fails to unwind G4-DNA substrates [42,79].”

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Wu, Y., Sommers, J. A., Suhasini, A. N., Leonard, T., Deakyne, J. S., Mazin, A. V., Shin-ya, K., Kitao, H., & Brosh, R. M.
Affiliations
  • National Institutes of Health (US)
  • Drexel University (US)
  • National Institute of Advanced Industrial Science and Technology, Tokyo, Japan; and
  • Kyoto University (JP)
Venue
Blood
Published
2010-11-11
Volume
116
Issue
19
Pages
3780-3791
ISSN
  • 0006-4971 (ISSN-L)
  • 1528-0020
OpenAlex
W2084751512
Cited by
72
References
41
Citations by year
2025: 1 · 2024: 3 · 2023: 6 · 2022: 3 · 2021: 6 · 2020: 6 · 2019: 5 · 2018: 3 · 2017: 5 · 2016: 6 · 2015: 5 · 2014: 6 · 2013: 3 · 2012: 5
FWCI
2.21
Type
journal article
Language
en
Open access
Locations
  • Blood (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Cancer Institute (CA100839, R01CA100839, R56CA100839)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Blood disorders and treatments
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Genetic factors in colorectal cancer
Keywords
Fanconi anemia, FANCJ, DNA helicase, DNA translocation, ATP hydrolysis, DNA repair, homologous recombination, G-quadruplex, protein-DNA complex, dominant negative effect, cisplatin sensitivity, telomestatin, γH2AX foci
MeSH terms
Adenosine Triphosphatases, Adenosine Triphosphate, Amino Acid Sequence, DNA, DNA Repair, DNA Helicases, Humans, Iron, Molecular Sequence Data, Oxazoles, Recombinant Proteins, Mitomycin, Amino Acid Substitution, Mutation, Missense, Mutant Proteins, Basic-Leucine Zipper Transcription Factors, Fanconi Anemia Complementation Group Proteins, Protein Stability, In Vitro Techniques

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review