体外研究
(R)-CR8 (CR8) (0.1-100 μM; 48 hours) is a potent inducer of apoptotic cell death with an IC 50 of 0.49 μM for SH-SY5Y cell line. (R)-CR8 (0.25-10 μM) induces a dose-dependent induction of poly-(ADP-ribose)polymerase (PARP) cleavage. The CDK-bound form of (R)-CR8 has a solvent-exposed pyridyl moiety that induces the formation of a complex between CDK12-cyclin K and the CUL4 adaptor protein DDB1, bypassing the requirement for a substrate receptor and presenting cyclin K for ubiquitination and degradation. Apoptosis Analysis Cell Line: SH-SY5Y cell line Concentration: 0.1, 1, 10, 100 μM Incubation Time: 24 hours Result: Reduced cell survival in a dose-dependent manner.