Evidence map›Paper›PMID 24697838›Full record

ArticleJournal of the American Chemical Society2014

Reprogramming the mechanism of action of chlorambucil by coupling to a G-quadruplex ligand.

Marco Di Antonio, Keith I E McLuckie, Shankar Balasubramanian

Open access · hybridAbstract read
In one paragraph

Article in Journal of the American Chemical Society, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
2.6field-weighted citation impact, top 10% 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

24 citing papers in PubMed, 84 citations in OpenAlex.

  1. Article
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  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Potent Chlorambucil-Platinum(IV) Prodrugs.International journal of molecular sciences · 2022
    Article
  13. Journal of the American Chemical Society · 2022
    Article
  14. Article
  15. Review
  16. Review
  17. Article
  18. Review
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  20. Article
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

3 authors at 2 institutions in 2 countries.

Marco Di AntonioDepartment of Chemistry, University of Cambridge , Lensfield Road, Cambridge CB2 1EW, U.K.
Keith I E McLuckie
Shankar Balasubramanian
University of Cambridge · GBCancer Research UK · GB

Funding

Cancer Research UK 11961Cancer Research UK 12488
6 · The paper itself

Abstract

The nitrogen mustard Chlorambucil (Chl) generates covalent adducts with double-helical DNA and inhibits cell proliferation. Among these adducts, interstrand cross-links (ICLs) are the most toxic, as they stall replication by generating DNA double strand breaks (DSBs). Conversely, intrastrand cross-links generated by Chl are efficiently repaired by a dedicated Nucleotide Excision Repair (NER) enzyme. We synthesized a novel cross-linking agent that combines Chl with the G-quadruplex (G4) ligand PDS (PDS-Chl). We demonstrated that PDS-Chl alkylates G4 structures at low μM concentrations, without reactivity toward double- or single-stranded DNA. Since intramolecular G4s arise from a single DNA strand, we reasoned that preferential alkylation of such structures might prevent the generation of ICLs, while favoring intrastrand cross-links. We observed that PDS-Chl selectively impairs growth in cells genetically deficient in NER, but did not show any sensitivity to the repair gene BRCA2, involved in double-stranded break repair. Our findings suggest that G4 targeting of this clinically important alkylating agent alters the overall mechanism of action. These insights may inspire new opportunities for intervention in diseases specifically characterized by genetic impairment of NER, such as skin and testicular cancers.

Indexed as

AminoquinolinesCell LineChlorambucilCross-Linking ReagentsDNA AdductsG-QuadruplexesHumansLigandsPicolinic AcidsAminoquinolinesChlorambucilCross-Linking ReagentsDNA AdductsLigandsPicolinic Acidspyridostatin

Identifiers

PMID24697838
PMCPMC4132976
OpenAlexW2075919627

What OpenQuestion holds

Textmetadata
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.