Evidence map›Paper›PMID 19912650›Full record

ArticleMolecular cancer2009

Camptothecin and khat (Catha edulis Forsk.) induced distinct cell death phenotypes involving modulation of c-FLIPL, Mcl-1, procaspase-8 and mitochondrial function in acute myeloid leukemia cell lines.

Therese Bredholt, Elizabeth Ao Dimba, Hanne R Hagland, Line Wergeland, Jørn Skavland, Kjell O Fossan, Karl J Tronstad, Anne C Johannessen, Olav K Vintermyr, Bjørn T Gjertsen

Open access · goldAbstract read
In one paragraph

Article in Molecular cancer, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 1 pooled it
1.2field-weighted citation impact, top 21% 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, 1 synthesis or guideline pooled it, 50 citations in OpenAlex.

  1. Evaluation of Khat (Catha edulis) Use as a Risk Factor of Cancer: A Systematic Review.Asian Pacific journal of cancer prevention : APJCP · 2020
    Pooled it
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  8. Progress and Research Trends onFrontiers in pharmacology · 2021
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  9. Unraveling theFrontiers in pharmacology · 2021
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  19. Dual-acting histone deacetylase-topoisomerase I inhibitors.Bioorganic & medicinal chemistry letters · 2013
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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

10 authors at 3 institutions in 2 countries.

Therese BredholtThe Gade Institute, University of Bergen, Bergen, Norway.
Elizabeth Ao Dimba
Hanne R Hagland
Line Wergeland
Jørn Skavland
Kjell O Fossan
Karl J Tronstad
Anne C Johannessen
Olav K Vintermyr
Bjørn T Gjertsen
University of Bergen · NOHaukeland University Hospital · NOUniversity of Nairobi · KE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAn organic extract of the recreational herb khat (Catha edulis Forsk.) triggers cell death in various leukemia cell lines in vitro. The chemotherapeutics camptothecin, a plant alkaloid topoisomerase I inhibitor, was tested side-by-side with khat in a panel of acute myeloid leukemia cell lines to elucidate mechanisms of toxicity.

resultsKhat had a profound effect on MOLM-13 cells inducing mitochondrial damage, chromatin margination and morphological features of autophagy. The effects of khat on mitochondrial ultrastructure in MOLM-13 correlated with strongly impaired routine respiration, an effect neither found in the khat-resistant MV-4-11 cells nor in camptothecin treated cells. Enforced expression of anti-apoptotic Bcl-2 protein provided protection against camptothecin-induced cell death and partly against khat toxicity. Khat-induced cell death in MOLM-13 cells included reduced levels of anti-apoptotic Mcl-1 protein, while both khat and camptothecin induced c-FLIPL cleavage and procaspase-8 activation.

conclusionKhat activated a distinct cell death pathway in sensitive leukemic cells as compared to camptothecin, involving mitochondrial damage and morphological features of autophagy. This suggests that khat should be further explored in the search for novel experimental therapeutics.

Indexed as

bcl-2-Associated X ProteinCamptothecinCASP8 and FADD-Like Apoptosis Regulating ProteinCaspase 8CathaCell DeathCell Line, TumorCell RespirationCytoprotectionDrug Screening Assays, AntitumorEnzyme ActivationHumansLeukemia, Myeloid, AcuteMitochondriaMyeloid Cell Leukemia Sequence 1 ProteinPhenotypebcl-2-Associated X ProteinCamptothecinCASP8 and FADD-Like Apoptosis Regulating ProteinCaspase 8Myeloid Cell Leukemia Sequence 1 ProteinPlant ExtractsProto-Oncogene Proteins c-bcl-2

Identifiers

PMID19912650
PMCPMC2781802
OpenAlexW2129237670

What OpenQuestion holds

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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.