Evidence map›Paper›PMID 18853102›Full record

ArticleInvestigational new drugs2009

Characterization of the cytotoxic activity of the indoloquinoline alkaloid cryptolepine in human tumour cell lines and primary cultures of tumour cells from patients.

Daniel Laryea, Anders Isaksson, Colin W Wright, Rolf Larsson, Peter Nygren

Abstract read
PubMed Publisher
In one paragraph

Article in Investigational new drugs, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
0.6field-weighted citation impact, top 34% 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

10 citing papers in PubMed, 19 citations in OpenAlex.

  1. Article
  2. Heterocyclic Phytochemicals as Anticancer Agents.Current topics in medicinal chemistry · 2025
    Review
  3. Article
  4. Recent Advances in the Chemistry and Pharmacology of Cryptolepine.Progress in the chemistry of organic natural products · 2021
    Article
  5. Article
  6. Review
  7. Article
  8. Review
  9. Article
  10. Review
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 at 2 institutions in 2 countries.

Daniel LaryeaDivision of Clinical Pharmacology, Department of Medical Sciences, University Hospital, 751 85, Uppsala, Sweden. daniel.laryea@medsci.uu.se
Anders Isaksson
Colin W Wright
Rolf Larsson
Peter Nygren
Uppsala University Hospital · SEUniversity of Bradford · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The plant derived indoloquinoline alkaloid cryptolepine was investigated for its cytotoxic properties in 12 human tumour cell lines and in primary cultures of tumour cells from patients. The fluorometric microculture cytotoxicity assay was used to assess cytotoxicity and DNA micro-array analysis to evaluate gene expression. Cryptolepine mean IC(50) in the cell line panel was 0.9 microM compared with 1.0 and 2.8 microM in haematological and solid tumour malignancies, respectively. Among patient solid tumour samples, those from breast cancer were the most sensitive and essentially as sensitive as haematological malignancies. Cryptolepine activity showed highest correlations to topoisomerase II and microtubule targeting drugs. In the cell lines cryptolepine activity was essentially unaffected by established mechanisms of drug resistance. A number of genes were identified as associated with cryptolepine activity. In conclusion, cryptolepine shows interesting in vitro cytotoxic properties and its further evaluation as an anti-cancer drug seems warranted.

Indexed as

Topoisomerase II InhibitorsAntineoplastic Agents, PhytogenicBiomarkers, TumorDrug Resistance, NeoplasmDrug Screening Assays, AntitumorGene Expression ProfilingHumansIndole AlkaloidsMolecular StructureNeoplasmsOligonucleotide Array Sequence AnalysisQuinolinesTumor Cells, CulturedAntineoplastic Agents, PhytogenicBiomarkers, TumorcryptolepineIndole AlkaloidsQuinolinesTopoisomerase II Inhibitors

Identifiers

PMID18853102
OpenAlexW1995491113

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.