BRD4 Inhibitor

PLK1/BRD4-IN-2 (compound 15) is a BI-2536 (HY-50698) analog and dual inhibitor that targets both Polo-like kinase 1 (PLK1) and BRD4bromodomain (BRD4-BD1 IC₅₀=28 nM, PLK1 IC₅₀=40 nM).

BRD4 Inhibitor-18 is a highly potent BRD4 inhibitor with an IC₅₀ value of 110 nM. BRD4 Inhibitor-18 has a hydrophobic acetylcyclopentanyl side chain. BRD4 Inhibitor-18 can significantly suppress the proliferation of MV-4-11 cells with high BRD4 level. BRD4 Inhibitor-18 has apoptosis-promoting and G0/G1 cycle-arresting activity.

BET-IN-2 is a BET inhibitor with an IC₅₀ of 52 nM for BRD4-BD1.

BY27 is a potent and selective BET BD2 inhibitor, shows 38, 5, 7, and 21-fold BD1/BD2 selectivity for BRD2, BRD3, BRD4, and BRDT. Anti-cancer activity.

BRD4-BD1-IN-4 is a selective BRD4 BD1 inhibitor with an IC₅₀ of 0.82 μM and a K_d of 0.98 μM. BRD4-BD1-IN-4 downregulates the expression of c-myc and anti-apoptotic proteins, elevates ROS levels, reduces mitochondrial membrane potential, induces DNA damage and triggers apoptosis. BRD4-BD1-IN-4 inhibits the migration and proliferation of cancer cells. BRD4-BD1-IN-4 can be used in the research of lung cancer, breast cancer and colon cancer.

(S)-JQ-35-Boc is a derivative of (S)-JQ-35 (HY-117286) and also a BRD4 inhibitor. (S)-JQ-35-Boc can be used in studies related to PROTAC synthesis, such as serving as the target protein ligand for RAJQ14 (HY-181495).

Ad-JQ1 (Compound 16) is an Target Protein Ligand-Linker Conjugate that incorporates a ligand for BRD4 (HY-78695) and a PROTAC linker (HY-176390), which recruits E3 ligases. Ad-JQ1 can be used for synthesis of PROTAC β-NF-JQ1 (HY-130256).

CZL-149 is an orally active dual BET and p300/CBP bromodomains inhibitor with IC₅₀s of 13 nM and 10.5 nM for BED4 BD1 and p300, respectively. CZL-149 reduces c-Myc and H3K27Ac levels. CZL-149 has good drug-like properties and metabolic characteristics, as well as good safety. CZL-149 can be used for the study of multiple myeloma.

BRD4-BD1-IN-1 (Compound 9a) is a BRD4-BD1 inhibitor with an IC₅₀ of 38.20 μM.

HRG038 is a covalent CUL4^DCAF16-base PROTAC-liked BRD4 degrader. HRG038 induces proteasome- and Cullin E3 ligase-dependent degradation, covalently targets cysteine residue C173 on DCAF16 to mediate BRD4 degradation, and induces reduction in BRD3 levels. HRG038 shows selective loss of the short BRD4 isoform over the long isoform in non-cancer cells, degrades both BRD4 isoforms in breast cancer cells, and does not impair cell viability in non-cancer cells. HRG038 can be used for the research of breast cancer.

GSK785 is a BRD2/4-selective, BRD3-sparing bivalent BET inhibitor. GSK785 inhibits production of the MCP1 cytokine in human whole blood. GSK785 can be used for the research of cancer.

BET-IN-30 (Compound 11d) is a BTE family protein inhibitor, which can act as a BRD2/BRD3/BRD4 target protein ligand and be used for the synthesis of PROTACs, such as PROTAC BET Degrader-15 (HY-181729). BET-IN-30 exhibits potent anti-proliferative activity against acute myeloid leukemia (AML) cells such as MV4-11. BET-IN-30 can be used for the study of AML.

PROTAC BRD2/BRD4 degrader-1 (compound 15) is a potent and selective BET protein BRD4 and BRD2 degrader, connected by ligands for Cereblon and BET. PROTAC BRD2/BRD4 degrader-1 rapidly induces reversible, long-lasting, and unexpectedly selective removal of BRD4 and BRD2 over BRD3. PROTAC BRD2/BRD4 degrader-1 effectively inhibits solid tumors with low cytotoxic effect.

GXH-II-052 is a potent bivalent bromodomain and extraterminal domain (BET) inhibitor. GXH-II-052 shows binding potential for BRD4-1, BRD4-2, BRD4-T, BRDT-1, BRDT-2, BRDT-T with K_d values of 28, 9.1, 4.8, 0.6, 8.4, 2.6 nM, respectively. GXH-II-052 shows antiproliferative activity. GXH-II-052 decreases the expression of c-Myc.

PI3Kδ/BET-IN-1 (compound 10b) shows excellent and balanced activities against PI3Kδ (IC₅₀ = 112 nM) and BRD4-BD1 (IC₅₀ = 19 nM) and exhibits strong antiproliferative activities in DLBCL cells.

KB-0118 (BBC0115) is an orally active BET bromodomain inhibitor. KB-0118 selective binds to BRD2 and BRD4 over BRD3, with K_d values of 36.7 μM for BRD2 BD1 and 47.4 μM for BRD4 BD1. KB-0118 inhibits pro-inflammatory cytokines, including TNF, IL-1β, and IL-23a and selectively suppresses Th17 cell differentiation. KB-0118 modulates Th17-driven inflammation occurs through epigenetic suppression of BRD4, confirmed by downregulation of STAT3 and BRD4 target genes. KB-0118 has immunomodulatory effects in inflammatory bowel disease (IBD) model.

PARP1/BRD4-IN-1 is a potent and high selective PARP1/BRD4 inhibitor (IC₅₀s of 49 and 202 nM in PARP1 and BRD4, respectively). PARP1/BRD4-IN-1 represses the expression and activity of PARP1 and BRD4 to synergistically inhibit the malignant growth of pancreatic cancer cells.

NC-III-49-1 is a potent bivalent bromodomain and extraterminal domain (BET) inhibitor. NC-III-49-1 shows binding potential for BRD4-1, BRD4-2, BRD4-T, BRDT-1, BRDT-2, BRDT-T with K_d values of 0.095, 0.32, 0.29, 0.089, 5.5, 0.058 nM, respectively. NC-III-49-1 shows antiproliferative activity. NC-III-49-1 decreases the expression of c-Myc.

ZEN-3411 is a BET inhibitor with IC₅₀s of 0.05, 0.05 and 0.06 μM for BRD4(BD1), BRD4(BD2) and BRD4(BD1BD2), respectively. ZEN-3411 can be used to form PROTACs to induce degradation of BRD4.

SJ46421 is a BRD3BD2 PROTAC degrader. SJ46421 induces a cooperative ternary complex of KLHDC2 and BRD3BD2 with an IC₅₀ of 7.8 nM. SJ46421 binds to the substrate-binding pocket of KLHDC2, forms cooperative ternary complexes with BRD3BD2, BRD2BD2 and BRD4BD2, disrupts the autoinhibitory tetramer assembly of KLHDC2, drives selective ubiquitination of BRD3BD2, and inhibits the ubiquitination of endogenous KLHDC2 diglycine substrates. SJ46421 can be used in cancer research.