PROTAC and Building Blocks

XY028-140 is a PROTAC connected by ligands for Cereblon and CDK. XY028-140 inhibits both CDK4/6 expression and CDK4/6 activity in cancer cells.

CP5V is a PROTAC connected by ligands for von Hippel-Lindau and CDK, which specifically degrades Cdc20 by linking Cdc20 to the VHL/VBC complex for ubiquitination followed by proteasomal degradation. CP5V induces mitotic inhibition and suppresses cancer cell proliferation.

KB02-SLF is a PROTAC-based nuclear FKBP12 degrader (molecular glue). KB02-SLF promotes nuclear FKBP12 degradation by covalently modifying DCAF16 (E3 ligase) and can improve the durability of protein degradation in biological systems. SLF binds ubiquitin E3 ligase ligand KB02 via a linker to form KB02-SLF.

PROTAC EED degrader-1 is a von Hippel-Lindau-based PROTAC targeting EED with a pKD of 9.02. PROTAC EED degrader-1 is a polycomb repressive complex 2 (PRC2) inhibitor (pIC50=8.17) targeting the EED subunit.

PROTAC IRAK4 degrader-1 is a Cereblon-based PROTAC interleukin-1 receptor-associated kinase 4 (IRAK4) degrader extracted from patent US20190192668A1 Compound I-210, makes 20-50%, and >50% IRAK4 degradation at 0.01, 0.1, and 1 μM in OCI-LY-10 cells, respectively.

dCBP-1 is a potent and selective heterobifunctional degrader of p300/CBP based on Cereblon ligand. dCBP-1 is exceptionally potent at killing multiple myeloma cells and ablates oncogenic enhancer activity driving MYC expression.

BSJ-4-116 is a PROTAC connected by ligands for Cereblon and CDK. BSJ-4-116 is a highly potent and selective CDK12 degrader (PROTAC) with an IC50 of 6 nM. BSJ-4-116 downregulates DDR genes through a premature termination of transcription, primarily through increasing poly(adenylation). BSJ-4-116 exhibits potent antiproliferative effects, alone and in combination with the poly(ADP-ribose) polymerase inhibitor Olaparib.

PROTAC ERRα Degrader-3 is a potent and selective ERRα degrader based on von Hippel-Lindau ligand. PROTAC ERRα Degrader-3 is capable of specifically degrading ERRα protein by >80% at a concentration of 30 nM. PROTAC ERRα Degrader-3 is inactive against ERRβ and ERRγ proteins.

TD-165 is a PROTAC-based cereblon (CRBN) degrader. TD-165 comprises a?cereblon (CRBN)?ligand binding group, a linker and an?von Hippel-Landau (VHL)?binding group.

PROTAC BRD4 Degrader-8 is a PROTAC connected by ligands for von Hippel-Lindau and BRD4, with IC50s of 1.1 nM and 1.4 nM for BRD4 BD1 and BD2, respectively. PROTAC BRD4 Degrader-8 is capable of potently degrading the BRD4 protein in PC3 prostate cancer cells.

SJF620 hydrochloride is a PROTAC connected by ligands for Cereblon and Btk with a DC50 of 7.9 nM. SJF620 contains a Lenalidomide analog for recruiting CRBN.

PROTAC CDK2/9 Degrader-1 (Compound F3) is a potent dual degrader for CDK2 (DC50=62 nM) and CDK9 (DC50=33 nM). PROTAC CDK2/9 Degrader-1 suppresses prostate cancer PC-3 cell proliferation (IC50=0.12 ?M) by effectively blocking the cell cycle in S and G2/M phases. PROTAC CDK2/9 Degrader-1 is a PROTAC by tethering CDK inhibitor with Cereblon ligand.

PROTAC IDO1 Degrader-1 is the first potent IDO1 (indoleamine 2,3-dioxygenase 1) degrader that hijacks IDO1 to Cereblon E3 ligase to introduce IDO1 into UPS and eventually achieve ubiquitination and degradation (DC50=2.84 μM).

XY028-133 (example 14) is a PROTAC-based CDK4/6 degrader with anti-tumor activity, which consists of ligands for von Hippel-Lindau and CDK.

MD-222 is the first-in-class highly potent PROTAC degrader of MDM2. MD-222 consists of ligands for Cereblon and MDM2. MD-222 induces rapid degradation of the MDM2 protein and activation of wild-type p53 in cells. MD-222 has anticancer effects.

PROTAC EED degrader-2 is a von Hippel-Lindau-based PROTAC targeting EED with a pKD of 9.27. PROTAC EED degrader-2 is a polycomb repressive complex 2 (PRC2) inhibitor (pIC50=8.11) targeting the EED subunit.

ARV-471 is an orally bioavailable estrogen receptor-targeted (ER-targeted) PROTAC for the treatment of patients with locally advanced or metastatic ER+/HER2- breast cancer.