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The Cardiosight®-S

Your Next iPSC-Derived Cardiomyocytes
















Serum Free.





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Discover how we characterized our cells.

Stable Beating

Explore how our cardiomyocytes perform.

User Guide

Download the Cardiosight®-SUser Guide.

Catalog number Description Quantity Price
C-001 NEXEL Cardiosight®-S Kit, small

Each kit contains

1. Cardiosight®-S, cryopreserved hiPSC-derived cardiomyocytes
2. Cardiosight®-S Media (CM-001, 100 ml)
3. Cardiosight®-S Maintenance Supplement (CS-001, 2 ml)
4. Cardiosight®-S Plating Supplement (CS-010, 0.6 ml)

≥ 2 × 106
Viable cells / Vial
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C-002 NEXEL Cardiosight®-S Kit, large

Each kit contains

1. Cardiosight®-S, cryopreserved hiPSC-derived cardiomyocytes
2. Cardiosight®-S Media (CM-002, 200 ml)
3. Cardiosight®-S Maintenance Supplement (CS-001, 2 ml X 2)
4. Cardiosight®-S Plating Supplement (CS-020, 0.9 ml)

≥ 5 × 106
Viable cells/Vial
Request Quote
CMS-001 NEXEL Cardiosight®-S Media Kit, small

Each kit contains

1. Cardiosight®-S Media (CM-001, 100 ml)
2. Cardiosight®-S Maintenance Supplement (CS-001, 2 ml)
3. Cardiosight®-S Plating Supplement (CS-010, 0.6ml)

100 ml
Request Quote
CMS-002 NEXEL Cardiosight®-S Media Kit, large

Each kit contains

1. Cardiosight®-S Media (CM-002, 200 ml)
2. Cardiosight®-S Maintenance Supplement (CS-001, 2 ml X 2)
3. Cardiosight®-S Plating Supplement (CS-020, 0.9ml)

200 ml
Request Quote

Product Description

Discover Your Next iPS-derived Cardiomyocytes.

  NEXEL Co., Ltd. strives to provide high quality human cardiomyocytes derived from human induced pluripotent stem (iPS) cells using optimized proprietary protocols. The Cardiosight®-S is a highly pure and electrophysiologically active population of cells, suitable for all types of experiments in the field of cardiomyocytes. Our priority is to ensure researchers get a reliable product and accelerate the diverse projects they are working on.

  Our human iPSC-derived cardiomyocytes have been validated on multiple platforms and our quality control process has been optimized to test the exact settings in which customers use our product. Our comprehensive testing ensures that the cells have been tested both on the Nanion Cardioexcyte96 and the Axion Maestro MEA. Our Certificate of Analysis (CoA) contains the exact results we obtained and our technical support team will work with you to provide the same experience in your lab.

  Try the Cardiosight®-S now.

Product Data




DIV 14

  The Cardiosight®-S recovers quickly upon thawing to start spontaneous beating the day immediately after and stabilizing over time (45~60 bpm on DIV7). The Cardiosight®-S cardiomyocytes readily form a single synchronous monolayer which enhances both reproducibility and accuracy of assays. The above images were taken from a 12-well culture plate 72 hours, 1 week and 2 weeks post-thawing (Magnification 100x). The Cardiosight®-S was seeded following the Cardiosight®-S User Guide but at a plating density of 100,000 cells/cm2 to demonstrate correct layer formation even at lower densities.



(Abcam anti-Cardiac Troponin T Polyclonal Antibody, ab8295)


(Abcam Anti-Connexin43 polyclonal Antibody, ab11370)


Merged Image


(Invitrogen Anti-MYL2 Polyclonal Antibody, PA5-86045)


(SySy Anti-MLC-2A Monoclonal Antibody, 311 011)


Merged Image

  The Cardiosight®-S expresses typical ventricular cardiomyocyte markers and structural characteristics which are indicative of appropriate contractile functionality of these cells. 30,000 cells were seeded on Matrigel on a 9 mm coverslip and cultured for 7 days before fixation. Immunocytochemistry was performed by incubating primary antibodies at the concentrations recommended by the respective suppliers at RT for 1 hour.

Electrophysiology – Patch Clamp

 The Cardiosight®-S proved a good fit with the Nanion Patchliner for recording patch clamp measurements of the sponataneous beating. The cells demonstrated a high success rate and low variability in the sodium currents (INa). It was possible to measure a dose-dependent block of sodium currents by TTX(A) and effects specific to INa, Late by ATX-II(enhancer) and ranolazine(blocker) were also easily observable. Finally, calcium channel activation by BayK and inhibition by nifedipine could also be detected in changes of the APD90. These results demonstrate the Cardiosight®-S expresses the correct ion channels and can readily be used in pharmacology applications. Read our poster here and find out more about the Nanion Patchliner Dynamite8 here.

Electrophysiology – Dynamic Clamp

 The Cardiosight®-S demonstrated great results also in dynamic clamp experiments, again on the Nanion Patchliner with the Dynamite8 add-on. In A, it was possible to record adult-ventricular-like action potentials with the the Cardiosight®-S at physiological temperature. In B & C, the effects of calcium channel activation (BayK) and inhibition (Nifedipine) could be assessed also in the presence of dynamic clamping. Read our poster here and find out more about the Nanion Patchliner here.

Electrophysiology – CardioExcyte96

 The Cardiosight®-S demonstrated low inter-well variability when tested on the Nanion CardioExcyte 96. High reproducibility of Impedance and EFP signals facilitated compound testing experiments (Nifedipine & Dofetilide). Concentrations were increased by consecutive treatments of10% media changes and matched the expected results, validating the cardiomyocyte properties.Read our poster here and find out more about the Nanion CardioExcyte96 here.

Electrophysiology – FLEXcyte96

 On Nanion’s all-new FLEXcyte 96 which uses soft subtrates to mature the cardiomyocytes, the Cardiosight®-S demonstrated high responsiveness to isoproterenol and were able to detect positive inotropic effects after just 7 days of culture. Find out more about the Nanion FLEXcyte here.

Electrophysiology – Axion Maestro

 The Cardiosight®-S demonstrated low variability, good synchronicity and good compound reactivity(Nifedipine & E4031) on the Axion Maestro. NEXEL’s QC process makes sure every batch of cells behaves similarly and the above data is available for each vial upon request.

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