Nothing but Pure Pluripotency
In the beginning, ESC were cultured on feeder cell layers, primarily murine embryonic fibroblasts (MEF), in non-defined culture media containing fetal calf serum (FCS). Later on, FCS would be replaced by somewhat more defined serum replacements and the introduction of extracellular matrix (ECM) coatings supporting self-renewal of ESC allowed for feeder-free culture using feeder-cell conditioned medium. However, the culture process remained time-consuming, laborious and poorly defined.
In recent years PSC-culture has experienced significant technical progress. Chemically defined media compositions became a standard, followed by the first xeno-free defined formulations. However, all these culture systems still depended on non-defined, xenogenic and poorly standardized ECM preparations – a contradiction in terms when using defined / xeno-free media. Importantly, research recently overcame this hurdle, identifying natural as well as synthetic ECM molecules and peptides that support undifferentiated PSC-expansion. Scientists are now capable of completely defined / humanized derivation and culture of hPSC.
Despite these recent technical advancements, the established hPSC culture systems still share unfavourable properties. Most of them use supra-physiologically high amounts of growth factors and / or contain substances purified from human or animal origin. In addition animal-derived and / or non-defined ECM is used. The PromoCell hPSC Growth Medium DXF consequently eliminates these disadvantages:
- Chemically defined / xeno-free complete culture system
- No human / animal derived components
- Physiologically low in growth factors
This optimal culture environment allows for a well-controlled culture process, consistent and reproducible performance, robust support of pluripotency and improved cloning efficiency.
In combination with the extracellular matrix hPSC-ECM DXF and the hPSC Dissociation Buffer DXF, PromoCell provides a defined and xeno-free complete culture system for human pluripotent stem cells.
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