BMS-935177

Biological Activity

In vitro: BMS-935177 shows greater than 50-fold selectivity over the SRC family of kinases, including 1100-fold selectivity over SRC itself. Other kinases inhibited with a potency less than 150 nM (50-fold selectivity) included TRKA, HER4, TRKB, and RET. It inhibits calcium flux in human Ramos B cells (IC50 = 27 nM) and inhibits CD69 surface expression in peripheral B cells stimulated with anti-IgM and anti-IgG. However, BMS-935177 has no effect on CD69 surface expression in B cells stimulated through the CD40 receptor with CD40 ligand. Against IgG-containing immune complex-driven low affinity activating Fcγ receptor (FcγRIIa and FcγRIII) end points in peripheral blood mononuclear cells (PBMCs), BMS-935177 effectively inhibited TNFα production with an IC50 value of 14 nM.

In vivo: Plasma protein binding for BMS-935177 is high for all species, with less than 1% free for human. It has excellent oral bioavailability in all preclinical species, from both suspension and solution dosing, despite its low aqueous solubility. The oral bioavailability for BMS-935177 with solution dosing ranges from 84% to 100% in rat, mouse, dog, and cynomolgus monkey, with low clearance in single intravenous (iv) infusion studies. When dosed at 2 mg/kg i.v. in mouse and rat, the T1/2 of BMS-935177 is 4 h and 5.1 h respectively.

Protocol (for reference only)

Cell Experiment
Cell lines
Preparation method
Concentrations
Incubation time

Animal Experiment
Animal models	Male Sprague−Dawley rats
Formulation	polyethylene glycol 400 (PEG-400)/water/ethanol (70:20:10, v/v/v) solution
Dosages	2 mg/kg
Administration	i.v.

Chemical Information

Molecular Weight	502.56
Formula	C31H26N4O3
CAS Number	1231889-53-4
Solubility (25°C)	100 mg/mL in DMSO
Storage	Powder          -20°C   3 years ;  4°C   2 years In solvent       -80°C   6 months ;  -20°C   1 month

Conversion of different model animals based on BSA (PMID: 27057123)

Species	Mouse	Rat	Rabbit	Guinea pig	Hamster	Dog
Weight (kg)	0.02	0.15	1.8	0.4	0.08	10
Body Surface Area (m2)	0.007	0.025	0.15	0.05	0.02	0.5
Km factor	3	6	12	8	5	20

Animal A (mg/kg) = Animal B (mg/kg) multiplied by	Animal B Km
	Animal A Km

For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the K_m factor for a mouse and then divide by the K_m factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.

References

[1] De Lucca GV, et al. J Med Chem. Small Molecule Reversible Inhibitors of Bruton's Tyrosine Kinase (BTK): Structure-Activity Relationships Leading to the Identification of 7-(2-Hydroxypropan-2-yl)-4-[2-methyl-3-(4-oxo-3,4-dihydroquinazolin-3-yl)phenyl]-9H-carbazole-1-carboxamide (BMS-935177).