IC50 Value: N/A
RepSox can efficiently replace transgenic Sox2 in the absence of VPA and cMyc, as well as in both embryonic and adult fibroblasts, we chose to further characterize E-616452 and named it RepSox, for Replacement of Sox2.
in vitro: Pretreated MEFs with RepSox, applying the chemical for three days, and then removed it at the time of transduction with Oct4, Klf4, and cMyc. In these experiments, no Oct4+GFP+ colonies were formed, suggesting that RepSox does not act on the initial somatic cells to replace Sox2. Consistent with this result, we did not detect a significant increase in the expression of endogenous Sox2or closely related Sox family members upon RepSox treatment . RepSox did increase by 5-fold the expression of L-Myc, a close homolog of cMyc that can functionally replace it in reprogramming.
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