brd2-bd1

CF53 is a highly potent, selective, and orally active inhibitor of BET protein, with a Ki of <1 nM, Kd of 2.2 nM, and an IC50 of 2 nM for BRD4 BD1. CF53 binds to both the BD1 and BD2 domains of BRD2, BRD3, BRD4, and BRDT BET proteins with high affinities, being very selective over non-BET bromodomain-containing proteins. CF53 exhibits potent anti-tumor activity both in vitro and in vivo.

BY27, a potent and selective BET BD2 inhibitor (Ki: 3.1 nM) with anticancer activity, inhibits BD1 BD2 of BRD2, BRD3, BRD4, and BRDT, and suppresses tumor growth.

MS402 is a novel BD1-selective BET BrD inhibitor.

INCB054329, a structurally distinct bromodomain and extraterminal domain (BET) inhibitor, inhibits BRD2-BD1, BRD2-BD2, BRD3-BD1, BRD3-BD2, BRD4-BD1, BRD4-BD2, BRDT-BD1 and BRDT-BD2 with IC50 values of 44 nM, 5 nM, 9 nM, 1 nM, 28 nM, 3 nM, 119 nM and 63 nM respectively.

RVX-297 is a BD2 selective inhibitor of BET bromodomains. RVX-297 preferentially binds to the BD2 domains of the BET bromodomain and Extra Terminal (BET) family of protein.

BRD4 Inhibitor-20 is a potent bromodomain protein 4 (BRD4) inhibitor with oral activity, demonstrating antiproliferative effects in cancer cell lines and used in studies of various cancers, including colon cancer.

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.

BRD4 Inhibitor-28 (Compound 18), an orally active molecule, selectively inhibits the bromodomains of BRD4 (BRD4-BD1 and BRD4-BD2) with IC50 values of 15 and 55 nM, respectively. It also demonstrates inhibition of BRD2-BD1, BRD3-BD1, and BRDT-BD1 with IC50 values of 19, 25, and 68 nM, respectively. Furthermore, this compound exhibits anti-melanoma activity [1].

GSK778 is a potent and selective inhibitor of BD1 bromodomain such as BRD2 BD1 (IC50s = 75 nM), BRD3 BD1 (IC50s = 41 nM), BRD4 BD1 (IC50s = 41 nM), and BRDT BD1 (IC50s = 143 nM). GSK778 inhibits proliferation, induces a cell cycle arrest and apoptosis.

BET-IN-27 (compound 6C) is an orally active BET inhibitor with IC50 values of 3.3 nM (BRD4-BD2), 3.4 nM (BRD4-BD1), 4.1 nM (BRD2-BD1), 20.4 nM (BRD3-BD1), and 42.0 nM (BRDT-BD1). It also exhibits antiproliferative activity.

I-BET567, a potent pan-BET inhibitor with oral activity, demonstrates pIC50 values of 6.9 and 7.2 for BRD4 BD1 and BD2, respectively. This compound has exhibited efficacy in mouse models of oncology and inflammation [1].

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

PLX51107 is a potent and selective BET inhibitor with Kds of 1.6, 2.1, 1.7, and 5 nM for BRD2-BD1, BRD3-BD1, BRD4-BD1, and BRDT-BD1, respectively.

PARP1 BRD4-IN-3 (compound HF4) is an effective inhibitor of BRD4 and PARP1, with IC50 values of 1210 nM and 2019 nM respectively. The compound exhibits antiproliferative activity, induces apoptosis (apoptosis) and cell cycle arrest at the G0 G1 phase. Additionally, PARP1 BRD4-IN-3 causes DNA damage and reduces the expression of the Rad51 protein, demonstrating anti-tumor activity.

GSK778 hydrochloride hydrochloride is a potent and selective BD1 bromodomain inhibitor of the BET proteins, with IC50s of 75 nM (BRD2 BD1), 41 nM (BRD3 BD1), 41 nM (BRD4 BD1), and 143 nM (BRDT BD1), respectively. GSK778 hydrochloride hydrochloride phenocopies the effects of pan-BET inhibitors in cancer models[1].

BRD4 Inhibitor-40 (Compound 23) functions as an inhibitor of BRD, effectively targeting BRD4-BD1, BRD4-BD2, BRD2-BD1, and BRD2-BD2, with IC50 values of 16.1, 142.18, 29.35, and 302.35 nM, respectively. It modulates the expression of c-Myc and p21, induces cell cycle arrest in the G1 phase, and inhibits Pkd1-deficient (PN) renal cystic epithelial cells. Additionally, it prevents renal cyst formation in both Madin-Darby canine kidney and embryonic kidney cyst models, and demonstrates renal cyst inhibition activity in mouse models.

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

SJ1461 is a potent, orally active inhibitor of the BET family, selectively targeting and inhibiting BRD2 (BD1), BRD2 (BD2), BRD4 (BD1), and BRD4 (BD2) with respective IC50 values of 1.6 nM, 0.1 nM, 6.5 nM, and 0.2 nM [1].

I-BET282E is a pan-inhibitor of eight BET bromodomains and shows selectivity for other representative bromodomain-containing proteins. It can act on eight BRD2 (BD1 BD2), BRD2 (BD1 BD), BRD3 (BD1 BD), and BRD4 (BD1 BD), with their pIC50 values ranging from 6.4 to 7.7.

BRD4 Inhibitor-25, a chemical compound targeting the BD1 and BD2 domains of BRD4 with half-maximal inhibitory concentrations (IC50s) of 0.82 μM and 1.94 μM respectively, demonstrates efficacy in inducing apoptotic and autophagic cell death in ovarian cancer cells. This compound is utilized in researching cancers, cardiovascular, neuromuscular, and inflammatory disorders.

GSK973 is a highly selective and orally bioavailable inhibitor that targets the second bromodomains (BD2s) of the BET family. It exhibits a pIC 50 of 7.8 and a pK d of 8.7 specifically for BRD4 BD2. Additionally, GSK973 demonstrates a remarkable selectivity of 1600-fold for BRD4 BD2 over BRD4 BD1. Moreover, it displays good potency against BRD2 BD2, BRD3 BD2, and BRDT BD2, with pIC 50 ranging from 7.4 to 7.8 and pK d ranging from 8.3 to 8.5.

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).

GS-626510 is an orally bioavailable inhibitor of BET family bromodomains (Kd: 0.59-3.2 nM for BRD2 3 4; IC50: 83 nM and 78 nM for BD1 and BD2).

BET BD2-IN-1 (compound 45) is a potent and selective BET BD2 inhibitor with an IC50 value of 1.6 nM. It suppresses Th17 cell differentiation by reducing the activation of STAT3 and NF-κB, making it relevant for psoriasis and inflammatory bowel disease (IBD) research [1].