Evidence map›Paper›PMID 24081385›Full record

ArticleJournal of cardiovascular translational research2013

Electrical stimulation promotes maturation of cardiomyocytes derived from human embryonic stem cells.

Yau-Chi Chan, Sherwin Ting, Yee-Ki Lee, Kwong-Man Ng, Jiao Zhang, Zi Chen, Chung-Wah Siu, Steve K W Oh, Hung-Fat Tse

Abstract read
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In one paragraph

Article in Journal of cardiovascular translational research, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 106 papers.

0numbers the graph read from it
0cells of the map it votes in
106citing papers in PubMed
4.6field-weighted citation impact, top 4% 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

106 citing papers in PubMed, 200 citations in OpenAlex.

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  11. Novel, low-cost bioreactor forFrontiers in bioengineering and biotechnology · 2025
    Article
  12. Article
  13. Article
  14. Review
  15. The past, present, and future promise of pluripotent stem cells.Journal of immunology and regenerative medicine · 2024
    Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. Review

46 more citing papers are in PubMed but not listed here.

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

9 authors at 4 institutions in 3 countries.

Yau-Chi ChanCardiology Division, Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong, Hong Kong SAR, China.
Sherwin Ting
Yee-Ki Lee
Kwong-Man Ng
Jiao Zhang
Zi Chen
Chung-Wah Siu
Steve K W Oh
Hung-Fat Tse
University of Hong Kong · HKQueen Mary Hospital · CNAgency for Science, Technology and Research · SGBioprocessing Technology Institute · SG

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

While human embryonic stem cells (hESCs) can differentiate into functional cardiomyocytes, their immature phenotypes limit their therapeutic application for myocardial regeneration. We sought to determine whether electrical stimulation could enhance the differentiation and maturation of hESC-derived cardiomyocytes. Cardiac differentiation was induced in a HES3 hESC line via embryoid bodies formation treated with a p38 MAP kinase inhibitor. Detailed molecular and functional analysis were performed in those hESC-derived cardiomyocytes cultured for 4 days in the absence or presence of electrical field stimulation (6.6 V/cm, 1 Hz, and 2 ms pulses) using an eight-channel C-Pace stimulator (Ion-Optics Co., MA). Upon electrical stimulation, quantitative polymerase chain reaction demonstrated significant upregulation of cardiac-specific gene expression including HCN1, MLC2V, SCN5A, SERCA, Kv4.3, and GATA4; immunostaining and flow cytometry analysis revealed cellular elongation and an increased proportion of troponin-T positive cells (6.3 ± 1.2% vs. 15.8 ± 2.1%; n = 3, P < 0.01). Electrophysiological studies showed an increase in the proportion of ventricular-like hESC-derived cardiomyocytes (48 vs. 29%, P < 0.05) with lengthening of their action potential duration at 90% repolarization (387.7 ± 35.35; n = 11 vs. 291.8 ± 20.82; n = 10, P < 0.05) and 50% repolarization (313.9 ± 27.94; n = 11 vs. 234.0 ± 16.10; n = 10, P < 0.05) after electrical stimulation. Nonetheless, the membrane diastolic potentials and action potential upstrokes of different hESC-derived cardiomyocyte phenotypes, and the overall beating rate remained unchanged (all P > 0.05). Fluorescence confocal imaging revealed that electrical stimulation significantly increased both spontaneous and caffeine-induced calcium flux in the hESC-derived cardiomyocytes (approximately 1.6-fold for both cases; P < 0.01). In conclusion, electrical field stimulation increased the expression of cardiac-specific genes and the yield of differentiation, promoted ventricular-like phenotypes, and improved the calcium handling of hESC-derived cardiomyocytes.

Indexed as

Cell DifferentiationCalcium SignalingCell LineCell LineageElectric StimulationEmbryonic Stem CellsGene Expression ProfilingGene Expression RegulationHumansMembrane PotentialsMyocytes, Cardiacp38 Mitogen-Activated Protein KinasesPhenotypeProtein Kinase InhibitorsTime Factorsp38 Mitogen-Activated Protein KinasesProtein Kinase Inhibitors

Identifiers

PMID24081385
OpenAlexW2056036909

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.