PROTAC CDK9 degrader-2 (compounds 11c) is a potent and selective CDK9 degrader based on PROTAC, with an IC50 of 17 μM in MCF-7 cell lines. Natural product Wogonin binds ubiquitin E3 ligase cereblon (CRBN) via a linker to form PROTAC[1].
KI-ARv-03 是一种高效且选择性的 ATP 竞争性CDK9抑制剂,在 45 μM ATP 浓度下的 IC50 为 0.15 μM,对其他CDK(包括 CDK1-7)的选择性超过130倍。该化合物能够抑制前列腺癌细胞中 AR 驱动的转录和细胞增殖,并可用于研究白血病、胰腺癌、肺泡横纹肌肉瘤 (ARMS) 和去势抵抗性前列腺癌 (CRPC)。此外,KI-ARv-03 是PROTAC靶蛋白的配体 (ligand for target protein for PROTAC),也适用于合成PROTACKI-CDK9d-32[1][2]。
CDK12-IN-4, a pyrazolotriazine compound, exhibits potent inhibition of CDK12 by achieving an IC50 value of 0.641 μM, utilizing high ATP levels (2 mM). Notably, CDK12-IN-4 does not impact CDK2/Cyclin E (IC50 > 20 μM) or CDK9/Cyclin T1 (IC50 > 20 μM) under the influence of high ATP (2 mM) levels (WO2021116178A1).
CDK12-IN-6, a pyrazolotriazine compound, is a powerful inhibitor of CDK12. Its inhibitory activity is significant with an IC50 value of 1.19 μM when tested at high ATP concentration (2 mM). Notably, CDK12-IN-6 does not exhibit any inhibitory effect on CDK2/Cyclin E (IC50 >20 μM) and CDK9/Cyclin T1 (IC50 >20 μM) when tested under the same high ATP conditions (2 mM) (WO2021116178A1).