RX-37 is a potent BET inhibitor with Ki values of 3.2-24.7 nM for BRD2, BRD3 and BRD4. RX-37 demonstrates high selectivity over other non-BET bromodomain-containing proteins. RX-37 potently and selectively inhibits cell growth in human acute leukemia cell
GW841819X is an analogue of (+)-JQ1 and a novel inhibitor of BET bromodomains. GW841819X was a single enantiomer but of undefined chirality at the 4-position of the benzodiazepine ring3. GW841819X and JQ1 were recently discovered that bind to the acetyl-lysine binding pocket of BET bromodomains with Kd ranges from 50 to 370 nM [1]. GW841819X bounded to both the individual BD1 and BD2 domains with affinities of 46 and 52.5 nM, respectively. GW841819X-Brd3 interaction was estimated to be around 70 nM4. GW841819X displayed activity in vivo against NUT-midline carcinoma, multiple myeloma, mixed-lineage leukemia, and acute myeloid leukemia1. It also potent induced the ApoA1 reporter gene with an EC50 of 440 nM. It had very little effect on LDL-R luciferase activity at the concentrations at which it induces ApoA1 expression, suggesting that the effect is indeed specific3. GW841819X competed directly with GATA1 site for BD1 binding and also specifically blocked the interaction between Brd3 and acetylated GATA14. Recent findings reported that GW841819X are chose as an interest compound to further develop into potential drugs against diseases including cancer, HIV infection and heart disease2.
MLK-IN-1 (US20140256733A1, compound 68) is a highly potent and selective inhibitor of mixedlineage kinase 3 (MLK-3). It exhibits excellent brain penetration and specifically targets MLK-3.
Sekikaic acid is a phenolic lichen metabolite that has been found in H. obscurata and has diverse biological activities. It scavenges superoxide and DPPH radicals in cell-free assays when used at a concentration of 0.5 µM. Sekikaic acid is active against the rg recombinant strain of respiratory syncytial virus (RSV; IC50 = 5.69 µg ml). It inhibits the protein-protein interaction between mixedlineage leukemia 1 (MLL1) and the GACKIX domain of CREB-binding protein (CBP; IC50 = 34 µM).
TC-5115 is a potent inhibitor of MLL methyltransferase with IC50 value of 16 nM. TC-5115 may lead to the development of a new therapy for the treatment of human MLL leukemia. The mixed-lineage leukemia (MLL) protein, also known as MLL1, is a lysine methyltransferase specifically responsible for methylation of histone 3 lysine 4. MLL has been pursued as an attractive therapeutic target for the treatment of acute leukemia carrying the MLL fusion gene or MLL leukemia.
M‑89 is a Highly Potent Inhibitor of the Menin-MixedLineage Leukemia (Menin-MLL) Protein−Protein Interaction (Kd = 1.4 nM; IC50 = 25nM). M-89 binds to menin with a Kd value of 1.4 nM and effectively engages cellular menin protein at low nanomolar concentrations. M-89 inhibits cell growth in the MV4;11 and MOLM-13 leukemia cell lines carrying MLL fusion with IC50 values of 25 and 55 nM, respectively, and demonstrates >100-fold selectivity over the HL-60 leukemia cell line lacking MLL fusion.
GW841819X is an analogue of (+)-JQ1 and a novel inhibitor of BET bromodomains. GW841819X displayed activity in vivo against NUT-midline carcinoma, multiple myeloma, mixed-lineage leukemia, and acute myeloid leukemia. Bromodomain and extra-terminal (BET) proteins belong to a class of proteins collectively called epigenetic readers . BET bromodomains have emerged as promising drug targets for treatment of cancers