BTX161, a Thalidomide analog, is a potent CKIα degrader. BTX161 mediates degradation of CKIα better than Lenalidomide in human AML cells and activates DNA damage response (DDR) and p53, while stabilizing the p53 antagonist MDM2.
In Vitro
BTX161 (25 μM; 4 hours; MV4-11 cells) upregulates all the Wnt targets including MYC and did not affect MDM2 mRNA expression. BTX161 (10 μM; 6 hours; MV4-11 cells), on its own, augmented p53 and MDM2 protein expression, yet in combination with THZ1, and particularly with both THZ1 and CDK9, further augmented p53 and induced maximal caspase 3 activation. MCE has not independently confirmed the accuracy of these methods. They are for reference only.