STEMdiff™ APEL™ 2-LI Medium is a fully defined, low-insulin (LI), serum-free and animal component-free medium for the differentiation of human embryonic stem (ES) cells and induced pluripotent stem (iPS) cells. It is based on the APEL formulation published by Dr. Andrew Elefanty and lacks undefined components such as protein-free hybridoma medium.
STEMdiff™ APEL™ 2-LI can be used in adherent or embryoid body (EB)-based protocols, such as with AggreWell™. Appropriate induction factors must be added before use. The low insulin content of this medium makes it particularly useful for differentiation to lineages in which insulin is a known inhibitor, such as cardiomyocyte.
• Compatible with TeSR™-cultured ES and iPS cells
• Compatible with adherent or EB culture differentiation protocols
• Can be used to direct differentiation to a variety of cell lineages when specific cytokines or induction factors are added
Pluripotent Stem Cells
Cell Culture, Differentiation
Area of Interest
Drug Discovery and Toxicity Testing, Stem Cell Biology
ISSCR 2011 Innovation Showcase - STEMdiff™ APEL™ Medium
Animal Component-Free hPSC Differentiation to Multiple Lineages
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.
The Journal of heart and lung transplantation : the official publication of the International Society for Heart Transplantation 2017 JUN
Coculturing with endothelial cells promotes in vitro maturation and electrical coupling of human embryonic stem cell-derived cardiomyocytes.
Pasquier J et al.
BACKGROUND Pluripotent human embryonic stem cells (hESC) are a promising source of repopulating cardiomyocytes. We hypothesized that we could improve maturation of cardiomyocytes and facilitate electrical interconnections by creating a model that more closely resembles heart tissue; that is, containing both endothelial cells (ECs) and cardiomyocytes. METHODS We induced cardiomyocyte differentiation in the coculture of an hESC line expressing the cardiac reporter NKX2.5-green fluorescent protein (GFP), and an Akt-activated EC line (E4(+)ECs). We quantified spontaneous beating rates, synchrony, and coordination between different cardiomyocyte clusters using confocal imaging of Fura Red-detected calcium transients and computer-assisted image analysis. RESULTS After 8 days in culture, 94% ± 6% of the NKX2-5GFP(+) cells were beating when hESCs embryonic bodies were plated on E4(+)ECs compared with 34% ± 12.9% for controls consisting of hESCs cultured on BD Matrigel (BD Biosciences) without ECs at Day 11 in culture. The spatial organization of beating areas in cocultures was different. The GFP(+) cardiomyocytes were close to the E4(+)ECs. The average beats/min of the cardiomyocytes in coculture was faster and closer to physiologic heart rates compared with controls (50 ± 14 [n = 13] vs 25 ± 9 [n = 8]; p < 0.05). The coculture with ECs led to synchronized beating relying on the endothelial network, as illustrated by the loss of synchronization upon the disruption of endothelial bridges. CONCLUSIONS The coculturing of differentiating cardiomyocytes with Akt-activated ECs but not EC-conditioned media results in (1) improved efficiency of the cardiomyocyte differentiation protocol and (2) increased maturity leading to better intercellular coupling with improved chronotropy and synchrony.
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