Can RevitaCell Supplement be used in addition to a traditional ROCK Inhibitor?
No. Combination of RevitaCell Supplement with a traditional ROCK inhibitor will result in deleterious effects on PSCs.
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The RevitaCell Supplement in the PSC Cryopreservation Kit has a strong smell. Is this normal?
Yes, it is normal that the RevitaCell Supplement has a strong smell.
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What is the difference between the PSC Cryopreservation Kit and the CTS PSC Cyropreservation Kit?
The CTS PSC Cryopreservation Kit (Cat. No. A4239301) provides the same efficient recovery, consistency, and reduced variability as the PSC Cryopreservation Kit (Cat. No. A2644601). However, these two kits have different intended use statements, i.e., For Research Use or Manufacturing of Cell, Gene, or Tissue-Based Products. CAUTION: Not intended for direct administration into humans or animals and For Research Use Only, respectively. Furthermore, the CTS PSC Cryopreservation Kit has full USP sterility testing info and a Drug Master file (DMF), whereas the sterility testing of the PSC Cryopreservation is via a modified USP method, and it does not have a DMF.
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Is StemFlex Medium compatible with downstream differentiation kits available from Thermo Fisher Scientific?
Yes. We have seen compatibility with the following differentiation kits provided by Thermo Fisher Scientific: PSC Cardiomyocyte Differentiation Kit (Cat. No. A2921201), PSC Definitive Endoderm Induction Kit (Cat. No. A3062601), PSC Neural Induction Medium (Cat. No. A1647801), and PSC Dopaminergic Neuron Differentiation Kit (Cat. No. A3147701).
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What protocol is recommended for delivery of Cas9 protein:guide RNA complex to my PSCs cultured in StemFlex Medium?
We recommend use of the Neon Electroporation device for electroporation of PSCs with Cas9 protein:guide RNA complex following the protocol guidance in the following demonstrated protocol (https://www.thermofisher.com/content/dam/LifeTech/Documents/PDFs/PG1584-PJT1313-COL31227-Demonstrated-Protocol-Performing-CRISPR-Cas9-FHR.pdf); see the section entitled Knockout by electroporation of RNP using the Neon Transfection System. We have seen that the Neon electroporation protocols 7 and 14 provide optimal indel formation while maintaining cell survival. However, the electroporation conditions may need to be optimized for your pluripotent cell line.
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