NI-57|NI57|BRPF BRD inhibitor

Cas No.:	1883548-89-7
Chemical Name:	4-cyano-N-(1,3-dimethyl-2-oxo-1,2-dihydroquinolin-6-yl)-2-methoxybenzenesulfonamide
Synonyms:	NI57,NI 57
SMILES:	COC1=CC(C#N)=CC=C1S(NC2=CC=C(N(C)C(C(C)=C3)=O)C3=C2)(=O)=O
Formula:	C₁₉H₁₇N₃O₄S
M.Wt:	383.4
Purity:	>98%
Sotrage:	2 years -20°C Powder, 2 weeks 4°C in DMSO, 6 months -80°C in DMSO

Description:	NI-57 is an inhibitor of bromodomain and plant homeodomain finger-containing (BRPF) famlily of proteins, with IC50s of 3.1, 46 and 140 nM for BRPF1, BRPF2 (BRD1) and BRPF3, respectively.
Target:	IC50: 3.1 nM (BRPF1), 46 nM (BRPF2 (BRD1)), 140 nM (BRPF3)[1]
In Vivo:	NI-57 has favorable oral bioavailability in mice[1].
In Vitro:	NI-57 is an inhibitor of bromodomain and plant homeodomain finger-containing (BRPF), with IC50s of 3.1, 46 and 140 nM for BRPF1, BRPF2 (BRD1) and BRPF3, respectively. NI-57 binds the BRD of BRPF1 with a Kd of 31 ± 2 nM, BRD1 with a Kd of 110 ± 13 nM, and BRPF3 with a Kd of 410 ± 47 nM, whereas binding to BRD9 is weaker (Kd 1000 ± 130 nM) measured by isothermal titration calorimetry. NI-57 shows less active effect on BRD9 (IC50, 520 nM) and BRD4 (BD1) (IC50, 3700 nM), TRIM24 (IC50, 1600 nM). NI-57 also inhibits BRPF BRDs in the nucleus, but shows little effect on the proliferation of many cancer cell lines with GI50s of 10.4 μM (NCI-H1703 cells), 14.7 μM (DMS114), 15.6 μM (HRA-19), and 16.6 μM (RERF-LC-Sq1). Furthermore, Inhibition on BRPF1 of NI-57 (10 μM) reduces the gene expression of CCL-22 by 27.7 ± 9.4%[1].
Kinase Assay:	All reagents are diluted in the recommended buffer (50 mMHEPES, 100 mM NaCl, 0.1% BSA; pH = 7.4) supplemented with 0.05% CHAPS and allowed to equilibrate to room temperature prior to addition to plates. 4 mL of HIS-tagged protein is added to low-volume 384-well plates, followed by 4 mL of either buffer, non-biotinylated peptide, solvent or compounds (NI-57, etc.). Plates are sealed and incubated at room temperature for 30 minutes, before the addition of 4 mL biotinylated peptide, resealing and incubation for a further 30 minutes. 4 mL of streptavidin-coated donor beads (25 µg/mL) and 4 µL of nickel chelate acceptor beads (25 µg/mL) are then added under low light conditions. Plates are foil sealed to protect from light, incubated at room temperature for 60 minutes and read on a PHERAstar FS plate reader using an AlphaScreenTM 680 excitation/570 emission filter set. IC50s are calculated in GraphPad Prism 5. Results for compounds (NI-57, etc.) dissolved in DMSO are normalised against corresponding DMSO controls prior to IC50 determination, which are given as the final concentration of compound in the 20 µL reaction volume[1].
References:	[1]. Igoe N, et al. Design of a Chemical Probe for the Bromodomain and Plant Homeodomain Finger-Containing (BRPF) Family of Proteins. J Med Chem. 2017 Aug 24;60(16):6998-7011.

Cat. No.	Product name	Field of application
DC70466	GSK549	GSK549 (GSK-549) is a potent, highly selective, BD2 domain-selective BET inhibitor with pIC50 of 7.8 (BRD4 BD2), 1150-fold selectivity over BD1.
DC11261	ZL0420	ZL0420 is a potent, highly selective BRD4 inhibitor with IC50 of 27 and 32 nM for BRD4-BD1 and BRD4-BD2, respectively.
DC8261	(-)-JQ-1	The (-)-JQ1 stereoisomer has no appreciable affinity to BET bromodomains，it is the negative control of +JQ-1.
DC8320	RVX-208	RVX-208(RVX 000222) is a small molecule that increases apolipoprotein A-I and high-density lipoprotein cholesterol in vitro and in vivo; is a BET bromodomain antagonist.
DC10786	PLX51107	PLX51107 is a novel BET inhibitor with a unique binding mode in the acetylated lysine binding pocket of BRD4 that differentiates it from other compounds under investigation.
DC8291	PFI-4	PFI-4 is a potent and selective BRPF1 bromodomain inhibitor (IC50 = 80 nM).
DC7649	PFI-3	PFI-3 is a novel potent, selective and cell permeable inhibitor of SMARCA4 and PB1(5) bromodomains with IC50 ~ 89 nM and 48 nM respectively.
DC9305	PF-CBP1(PF-06670910) hydrochloride	PF-CBP1 is potent and highly-selective inhibitor of the bromodomain of CREB binding protein (CBP BRD) that down regulates targets of CBP in macrophages primary neurons.
DC7850	OF-1	OF-1 is a potent inhibitor of BRPF1B and BRPF2 bromodomain with Kd of 100 nM and 500 nM, respectively.
DC9758	NI-57	NI-57 is a potent inhibitor of the bromodomains of BRPF proteins that binds to BRPF1B, BRPF2, and BRPF3 with Kd values of 31, 108, and 408 nM, respectively, as determined by isothermal titration calorimetry.