RSeT™ Feeder-Free Medium
Serum-free medium for naïve-like human pluripotent stem cells
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Developed under license from the Weizmann Institute of Science, this serum-free cell culture medium produces robust cultures with features of a naïve-like state, such as tightly packed, domed colonies with refractive edges. Human ES/iPS cells cultured in RSeT™ Feeder-Free Medium show increased expression of key transcripts associated with the naïve-like state, such as KLF17, KLF2, KLF4, and TFCP2L1, and can either be differentiated or converted back to a primed state by culture in mTeSR™1 and then differentiated.
Compatible products that can be used for differentiation include STEMdiff™ Definitive Endoderm Kit (Catalog #05110), STEMdiff™ SMADi Neural Induction Kit (Catalog #08581), and STEMdiff™ Mesoderm Induction Medium (Catalog #05220).
Figure 1. Schematic of Reversion of Primed to Naïve-Like hPSCs with RSeT™ Feeder-Free
Primed hPSCs are plated as aggregates in mTeSR™1. On day 1, mTeSR™1 is replaced with RSeT™ Feeder-Free, the cultures are transferred to hypoxic conditions, and the medium is exchanged every other day. By day 4 or 5, the colonies are generally large enough to be passaged. During the initial culture in RSeT™ Feeder-Free, colonies expand and begin to adopt a tightly-packed, highly domed morphology characteristic of naïve-like stem cells with smooth and refractive colony edges as early as passage 1.
Figure 2. hPSCs Maintained in RSeT™ Feeder-Free are Reverted to a Naïve-Like State and Express High Levels of Naïve-Associated Genes
(A) A representative image of hPSCs that reverted to a naïve-like state after being cultured in RSeT™ Feeder-Free for 1 passage. During reversion, colonies change from a flat morphology to a domed morphology characteristic of naïve-state hPSCs. (B) Expression of naïve-associated genes (KLF2, KLF4, KLF17, TFCP2L1, STELLA, and DNMT3L) in hPSCs that were reverted to a naïve-like state in RSeT™ Feeder-Free. Expression levels were measured by qPCR and normalized to levels in primed hPSCs.
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 (2)
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RSeT™ Feeder-Free Medium
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.