Ch 55 is a highly potent synthetic retinoid that has high affinity for RAR-α and RAR-β receptors and low affinity for cellular retinoic acid binding protein (CRABP). Inhibits rabbit tracheal epithelial cell differentiation by inhibiting transglutaminase and increasing cholesterol sulfate (EC50 values are 0.02 and 0.03 nM respectively). Induces differentiation of embryonic carcinoma F9 and melanoma S91 cells (EC50 values are 0.26 and 0.5 nM respectively) and inhibits the induction of ornithine decarboxylase activity in 3T6 fibroblasts (EC50 = 1 nM). Enables generation of Chemically Induced Pluripotent Stem Cells (CiPSCs) from mouse embryonic fibroblasts (MEFs) (see our protocol below).
For more information about how Ch 55 may be used, see our protocol: Highly Efficient Generation of CiPSCs from MEFs