STEMdiff™ Cardiomyocyte Expansion Kit
A serum-free media kit for the expansion of early-stage human pluripotent stem cell-derived cardiomyocytes
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- STEMdiff™ Cardiomyocyte Dissociation Kit
For dissociation of hPSC-derived cardiomyocytes
- STEMdiff™ Cardiomyocyte Support Medium
Medium for thawing and culturing hPSC-derived cardiomyocytes
- D-PBS (Without Ca++ and Mg++)
Dulbecco’s phosphate-buffered saline without calcium and magnesium
- Falcon® Serological Pipettes, 10 mL
Sterile polystyrene pipettes
By using this first-to-market kit to efficiently expand cardiomyocytes, you can save time and resources.
Create a complete, optimized workflow with these compatible STEMdiff™ cardiomyocyte products:
STEMdiff™ Ventricular Cardiomyocyte Differentiation Kit
STEMdiff™ Atrial Cardiomyocyte Differentiation Kit
STEMdiff™ Cardiomyocyte Dissociation Kit
STEMdiff™ Cardiomyocyte Support Medium
STEMdiff™ Cardiomyocyte Freezing Medium
STEMdiff™ Cardiomyocyte Maintenance Kit
Figure 1. Workflow for the Expansion of Early-Stage hPSC-Derived Cardiomyocytes Using the STEMdiff™ Cardiomyocyte Expansion Kit
Expansion of early-stage human pluripotent stem cell (hPSC)-derived cardiomyocytes begins with the differentiation of hPSCs to cardiomyocytes using the STEMdiff™ Ventricular Cardiomyocyte Differentiation Kit or the STEMdiff™ Atrial Cardiomyocyte Differentiation Kit. On Day 11 of differentiation, a beating, confluent monolayer of early-stage cardiomyocytes can be observed. These cardiomyocytes are harvested and replated at low density to initiate expansion using STEMdiff™ Cardiomyocyte Expansion Kit. Expanding hPSC-derived cardiomyocytes can be passaged up to 5 times before switching to STEMdiff™ Cardiomyocyte Maintenance Medium for downstream assays.
Figure 2. Expanding hPSC-Derived Cardiomyocytes Are Confluent One Week After Replating with STEMdiff™ Cardiomyocyte Expansion Kit
Representative images of expanding hPSC-derived ventricular cardiomyocytes after replating at low density (Day 1) using STEMdiff™ Cardiomyocyte Passaging Medium. Cardiomyocyte confluency increases during the 7 day expansion period. On Day 7, a confluent monolayer of beating hPSC-derived cardiomyocytes is observed and the expanded hPSC-derived cardiomyocytes are ready for harvest.
Figure 3. Expansion of hPSC-Derived Cardiomyocytes Across Multiple Cell Lines with STEMdiff™ Cardiomyocyte Expansion Kit
(A) Expansion of hPSC-derived cardiomyocytes was tracked for 5 passages with 4 hPSC lines. Per passage, fold expansion is typically highest in the first 1 – 2 passages. (B) Cumulative fold expansion over 5 passages ranged from 33- to 103-fold expansion and averaged at 72-fold ± 12 (n = 15, 4 hPSC lines).
Figure 4. Cardiomyocyte Purity Increases During Expansion Using STEMdiff™ Cardiomyocyte Expansion Kit
Cardiomyocyte purity was tracked during expansion using STEMdiff™ Cardiomyocyte Expansion Kit for 5 passages on 4 hPSC lines. Throughout expansion, hPSC-derived cardiomyocytes express high levels of cardiac troponin T, and on average show an increase in cardiomyocyte purity during expansion. After 5 passages, cardiomyocyte cultures show an average cTnT purity of 90% ± 2% (n = 15).
Figure 5. Post-Expanded hPSC-Derived Cardiomyocytes Exhibit Typical Cardiac Electrophysiology and a Stable Beat Profile
Microelectrode Array (MEA) recordings of post-expanded hPSC-derived cardiomyocytes (using STEMdiff™ Cardiomyocyte Expansion Kit) exhibit a stable beat rate across 4 hPSC lines. The post-expanded hPSC-derived cardiomyocytes were replated onto MEA and maintained in STEMdiff™ Cardiomyocyte Maintenance Medium for 1 week. The average beat rate was 12 ± 1 beats per minute (n = 14, 4 hPSC lines).
Protocols and Documentation
Find supporting information and directions for use in the Product Information Sheet or explore additional protocols below.
This product is designed for use in the following research area(s) as part of the highlighted workflow stage(s). Explore these workflows to learn more about the other products we offer to support each research area.
Resources and Publications
Educational Materials (6)
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STEMdiff™ Cardiomyocyte Expansion Kit
PRODUCTS ARE FOR RESEARCH USE ONLY AND NOT INTENDED FOR HUMAN OR ANIMAL DIAGNOSTIC OR THERAPEUTIC USES UNLESS OTHERWISE STATED. FOR ADDITIONAL INFORMATION ON QUALITY AT STEMCELL, REFER TO WWW.STEMCELL.COM/COMPLIANCE.