PHT-427

Cell experiment:

Panc-1 cells stably transfected with green fluorescent protein (GFP) tagged Akt or PDKP1 PH domains are serum starved in phenol red free growth medium on glass-bottom 96-well imaging plates for 16 hours. They are then treated with PHT-427 at 1, 5, and 10 µM or PI-103 for 4 hr, and stimulated with 50 ng/mL IGF-1 for 10 min. Images are taken before and after IGF-1 treatment using an IN Cell Analyzer 1000 instrument with a Nikon Plan Fluor ELWD 20X/0.45 objective loaded and using a 300msec exposure time[1].

Animal experiment:

Mice[1] Female C57Bl/6 mice are administered PHT-427 as a single oral dose of 200 mg/kg. The mice are killed at different times (3 mice at each time point), blood collected into heparinized tubes and plasma prepared and stored frozen at -80°C. For assay 0.2 mL plasma is mixed with 0.2 mL of 0.1 M sodium phosphate buffer, pH 4.0, and extracted for 1 hr by inversion with 1 ml ethyl acetate. After centrifugation 0.8 mL of the organic layer is removed, evaporated under N2 and redissolved in 0.2 mL ethanol and 10 µL injected onto a Waters Quattro Ultima tandem mass spectrometer using a Phenomenex Luna 3.0 µm, 2.0×50 mm C8 analytical column with detection and quantification by multiple reaction monitoring with the mass spectrometer operating in electrospray positive ionization mode.

References:

[1]. Meuillet EJ, et al. Molecular pharmacology and antitumor activity of PHT-427, a novel Akt/phosphatidylinositide-dependent protein kinase 1 pleckstrin homology domain inhibitor. Mol Cancer Ther. 2010 Mar;9(3):706-17.