Evidence map›Paper›PMID 23261645›Full record

ArticleToxicology in vitro : an international journal published in association with BIBRA2013

The effects of jaspamide on human cardiomyocyte function and cardiac ion channel activity.

Karen Schweikart, Liang Guo, Zachary Shuler, Rory Abrams, Eric T Chiao, Kyle L Kolaja, Myrtle Davis

Open access · greenAbstract read
In one paragraph

Article in Toxicology in vitro : an international journal published in association with BIBRA, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
1.7field-weighted citation impact, top 15% 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

23 citing papers in PubMed, 37 citations in OpenAlex.

  1. Review
  2. Review
  3. Jaspamide/Jasplakinolide Is Synthesized byJournal of natural products · 2025
    Article
  4. Review
  5. Predicting oncology drug-induced cardiotoxicity with donor-specific iPSC-CMs-a proof-of-concept study with doxorubicin.Toxicological sciences : an official journal of the Society of Toxicology · 2024
    Article
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  9. Article
  10. Susceptibility of cytoskeletal-associated proteins for tumor progression.Cellular and molecular life sciences : CMLS · 2021
    Review
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  14. Article
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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

7 authors at 2 institutions in 1 country.

Karen SchweikartDevelopmental Therapeutics Program, National Cancer Institute, Bethesda, MD 20892, United States. schweikk@mail.nih.gov
Liang Guo
Zachary Shuler
Rory Abrams
Eric T Chiao
Kyle L Kolaja
Myrtle Davis
La Roche College · USNational Cancer Institute · US

Funding

Intramural NIH HHS Z99 CA999999NCI NIH HHS Y99 CA999999
6 · The paper itself

Abstract

Jaspamide (jasplakinolide; NSC-613009) is a cyclodepsipeptide that has antitumor activity. A narrow margin of safety was observed between doses required for efficacy in mouse tumor models and doses that caused severe acute toxicity in rats and dogs. We explored the hypothesis that the observed toxicity was due to cardiotoxicity. Jaspamide was tested in a patch clamp assay to determine its effect on selected cardiac ion channels. Jaspamide (10 μM) inhibited Kv1.5 activity by 98.5%. Jaspamide also inhibited other channels including Cav1.2, Cav3.2, and HCN2; however, the Kv11.1 (hERG) channel was minimally affected. Using spontaneously contracting human cardiomyocytes derived from induced pluripotent stem cells, effects on cardiomyocyte contraction and viability were also examined. Jaspamide (30 nM to 30 μM) decreased cardiomyocyte cell indices and beat amplitude, putative measurements of cell viability and cardiac contractility, respectively. Concentration-dependent increases in rhythmic beating rate were noted at ≤ 6 h of treatment, followed by dose-dependent decreases after 6 and 72 h exposure. The toxic effects of jaspamide were compared with that of the known cardiotoxicant mitoxantrone, and confirmed by multiparameter fluorescence imaging analysis. These results support the hypothesis that the toxicity observed in rats and dogs is due to toxic effects of jaspamide on cardiomyocytes.

Indexed as

Antineoplastic AgentsCells, CulturedCell SurvivalDepsipeptidesHumansInduced Pluripotent Stem CellsIon ChannelsMyocytes, CardiacAntineoplastic AgentsDepsipeptidesIon Channelsjasplakinolide

Identifiers

PMID23261645
PMCPMC3587659
OpenAlexW2011647726

What OpenQuestion holds

Textmetadata
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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.