G007-LK is a selective inhibitor of TNKS1 and TNKS2, with IC50s of 46 nM and 25 nM, respectively.

TNKS1:46 nM, TNKS2:25 nM

TNKS1 and TNKS2 in vitro biochemical assays: G007-LK inhibitory activity at various doses (duplicates) is tested twice by TNKS1, TNSK2 Chemiluminescent Assay Kits, and the luminescence is measured.

Cell lines: APC-mutant CRC cell lines COLO-320DM. Concentrations: ~0.2 μM. Method: For colony formation assays,cells are seeded at 500 cells/well in 2 mL medium.Cell line in triplicate wells is treated with either 0.06% DMSO or compound in 0.06% DMSO and incubated for up to 17 days or until colonies became sufficiently large to quantify.Colonies are stained with 200 μL of 12 mM 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide to each well for 1 h,and colony numbers are quantitated with a GelCount scanner at 1200 dpi resolution.

Animal Models: Human APC –mutant CRC xenograft COLO-320DM. Formulation: 15% DMSO,17.5% Cremophor EL,8.75% ethanol,8.75% Miglyol 810N,50% PBS. Dosages: 20 mg/kg. Administration: intraperitoneal injection twice daily

Ethanol: < 1 mg/mL (insoluble or slightly soluble)

H2O: < 1 mg/mL (insoluble or slightly soluble)

DMSO: 93 mg/mL (175.48 mM), Sonication is recommended.

10% DMSO+90% Corn Oil: 3.3 mg/mL (6.23 mM), Sonication is recommended.