bd1-brd4

ZEN-3862 (Willardiine) is an inhibitor of BET(IC50s of 0.16 and 0.13 μM for BRD4(BD1) and BRD4(BD2) , respectively). ZEN-3862 can be used to form PROTACs to induce degradation of BRD4.

dBET57 is heterobifunctional degrader of BRD4 based on the PROTAC technology, exhibits significant degradation of BRD4BD1 with a DC50 5h of 500 nM ,and inactive on BRD4BD2

QCA570 is an effective BET degrader based on PROTAC (IC50: 10 nM for BRD4 BD1 Protein).

PROTAC BRD4 Degrader-16 is a potent degrader of BRD4, with IC50 values of 34.58 nM for BRD4 (BD1) and 40.23 nM for BRD4 (BD2). It significantly reduces Cyclin B1 expression, impedes G2 M phase progression, and induces apoptosis in MV-4-11 cells [1].

(S)-GNE-987 binds to the BRD4 BD1(IC50=4 nM) and BD2 (3.9 nM) bromodomains and can be used to design PROTAC-Antibody Conjugate (PAC).

PROTAC BRD4 Degrader-8 is a potent BRD4 inhibitor with IC50 values of 1.1 nM and 1.4 nM for BRD4 BD1 and BD2, respectively, effectively degrading the BRD4 protein in PC3 prostate cancer cells[1].

PROTAC BRD4 Degrader-14, a PROTAC (Proteolysis Targeting Chimera) linked by ligands to von Hippel-Lindau and BRD4, exhibits IC50 values of 1.8 nM and 1.7 nM for BRD4 BD1 and BD2, respectively. This compound effectively degrades the BRD4 protein in PC3 prostate cancer cells [1].

XY-06-007, a potent and selective bump-and-hole (B&H) PROTAC BRD4 BD1 L94V degrader, exhibits a DC50, 6 h of 10 nM specifically against BRD4 BD1 L94V without degrading off-targets. It also demonstrates favorable pharmacokinetics for in vivo studies [1].

PROTAC BRD4 Degrader-17 (compound 13i), a potent inhibitor, exhibits IC50 values of 29.54 nM (BRD4 (BD1)) and 3.82 nM (BRD4 (BD2)), effectively reducing Cyclin B1 expression linked with G2 M phase progression and significantly inducing apoptosis in MV-4-11 cells [1].

MZ 1 is a BRD4 protein degrader based on PROTAC technology.

PROTAC BRD4 Degrader-1 is an efficacious degrader of BRD4(BRD4 BD1,IC50 of 41.8 nM).

GXF-111, a proteolysis targeting chimera (PROTAC) molecule, efficiently induces the selective degradation of the BRD3 and BRD4-L proteins. It exhibits high binding affinities to both BRD3 BD1 and BRD3 BD2, with K i values of 11.97 nM and 2.35 nM, respectively. This compound is utilized in cancer research [1].

dBRD4-BD1 is a selective BRD4 bromodomain inhibitor. dBRD4-BD1 can selectively degrade BRD4 (DC50 = 280 nM). Notably, dBRD4-BD1 upregulates BRD2 3, a result not observed with degraders using pan-BET ligands. Designing BRD4 selectivity up front enables analysis of BRD4 biology without wider BET-inhibition and simplifies designing BRD4-selective heterobifunctional molecules, such as degraders with new E3 recruiting ligands or for additional probes beyond degraders.

ARV-825, a heterobifunctional PROTAC (Proteolysis Targeting Chimera) that recruits BRD4 to the E3 ubiquitin ligase cereblon leading to fast, efficient, and prolonged degradation of BRD4 in all BL cell lines tested.

BRD4 degrader AT1 is a highly selective Brd4 degrader based on PROTAC technology, with a Kd of 44 nM for Brd4BD2 in cells.

PROTAC BRD4 Degrader-15 is a chemical compound consisting of a PROteolysis TArgeting Chimera (PROTAC) linked to ligands specific to von Hippel-Lindau and BRD4. It exhibits an IC50 of 7.2 nM for BRD4 BD1 and 8.1 nM for BRD4 BD2 and demonstrates potent degradation activity against the BRD4 protein in PC3 prostate cancer cells.

HJB97 is used for the design of potential PROTAC BET degrader. It also has antitumor activity. HJB97 is a high-affinity inhibitor of BET (Kis: 0.9 nM (BRD2 BD1), 0.27 nM (BRD2 BD2), 0.18 nM (BRD3 BD1), 0.21 nM (BRD3 BD2), 0.5 nM (BRD4 BD1), 1.0 nM (BRD4 BD2), respectively).

PROTAC BRD4 Degrader-2 is an efficacious degrader of PROTAC BRD4(BRD4 BD1,IC50 of 14.2 nM).

GNE-987 is a highly active chimeric BET degrader. GNE-987 binds equipotently to the BD1 and BD2 bromodomains of BRD4 with low nanomolar affinities (IC50: 4.7 and 4.4 nM, respectively). GNE-987 exhibits picomolar cell BRD4 degradation activity (DC50: 0.03

PROTAC BRD4 Degrader-7, a potent bromodomain BRD4 inhibitor exemplified by compound 1a, demonstrates half-maximal inhibitory concentrations (IC50s) of 15.5 nM and 12.3 nM for BRD4-BD1 and BRD4-BD2, respectively [1].