| Description |
A cell-permeable, pyrrolidine small molecule that promotes single human embryonic stem cell survival up to 20-fold over background (EC 50 = 3.9 µM), with equal or higher potency than Y-27632 ((Cat. No. 688000) in 5 cell lines (SA461, SA181, SA167, SA121 and SA002) tested at 10 µM. An in vitro high-content screening assay, which profiles a panel of more than 70 protein kinases, indicates that this small molecule is more selective than Y-27632 and only displays an inhibitory effect toward ROCK2 (>83% inhibition, ROCK1 was not included in the panel) and PRK2 (76% inhibition) at 10 µM. Furthermore, it exhibits less cytotoxicity at a greater concentration of 30 µM than Y-27632 without marked adverse effects for up to 120 hours.
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