Evidence map›Paper›PMID 32699225›Full record

ArticleScientific reports2020

A G-quadruplex-binding compound shows potent activity in human gemcitabine-resistant pancreatic cancer cells.

Ahmed Abdullah Ahmed, Chiara Marchetti, Stephan A Ohnmacht, Stephen Neidle

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
1.5field-weighted citation impact, top 18% 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

18 citing papers in PubMed, 31 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Article
  6. Review
  7. Article
  8. Review
  9. Polyamine-Drug Conjugates: Do They Boost Drug Activity?Molecules (Basel, Switzerland) · 2023
    Review
  10. Article
  11. Review
  12. Article
  13. Peptide-Based Drug Delivery Systems.Medicina (Kaunas, Lithuania) · 2021
    Review
  14. Review
  15. Article
  16. Article
  17. Review
  18. 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

4 authors at 2 institutions in 1 country.

Ahmed Abdullah AhmedUCL School of Pharmacy, University College London, 29-39 Brunswick Square, London, WC1N 1AX, UK.ORCID http://orcid.org/0000-0002-0409-7589
Chiara MarchettiUCL School of Pharmacy, University College London, 29-39 Brunswick Square, London, WC1N 1AX, UK.
Stephan A OhnmachtUCL School of Pharmacy, University College London, 29-39 Brunswick Square, London, WC1N 1AX, UK.
Stephen NeidleUCL School of Pharmacy, University College London, 29-39 Brunswick Square, London, WC1N 1AX, UK. s.neidle@ucl.ac.uk.ORCID http://orcid.org/0000-0003-0622-6548
University College London · GBThe London College · GB

Funding

Medical Research Council MC_PC_12024Wellcome Trust
6 · The paper itself

Abstract

Gemcitabine is a drug of choice in the treatment of human pancreatic cancer. Chemo-resistance to this drug is common and has been attributed to a variety of distinct mechanisms, involving > 100 genes. A recently developed small-molecule G-quadruplex ligand, the trisubstituted naphthalene diimide compound CM03, has previously been shown to have equivalent potency to gemcitabine in the pancreatic cancer cell line MIA PaCa-2. We report here on cell lines of increased resistance to gemcitabine that have been generated from this line, with the most resistant having 1,000-fold reduced sensitivity to gemcitabine. These resistant lines retain nM sensitivity to CM03. The molecular basis for the retention of potency by this G-quadruplex ligand has been examined using whole transcriptome data analysis with RNA-seq. This has revealed that the pattern of pathways down regulated by CM03 in the parental MIA PaCa-2 cell line is largely unaffected in the gemcitabine-resistant line. The analysis has also shown that the expression patterns of numerous genes involved in gemcitabine sensitivity are down regulated in the resistant line upon CM03 treatment. These results are supportive of the concept that G-quadruplex small molecules such as CM03 have potential for clinical use in the treatment of gemcitabine-resistant human pancreatic cancer.

Indexed as

G-QuadruplexesAntimetabolites, AntineoplasticCell Line, TumorCell SurvivalDeoxycytidineDown-RegulationDrug Resistance, NeoplasmGemcitabineGene Expression ProfilingHumansImidesLigandsNaphthalenesPancreatic NeoplasmsRepressor ProteinsUp-RegulationAntimetabolites, AntineoplasticCBFA2T3 protein, humanDeoxycytidineGemcitabineImidesLigandsnaphthalenediimideNaphthalenesRepressor Proteins

Identifiers

PMID32699225
PMCPMC7376204
OpenAlexW3045234089

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.