A cell permeable imidazopyridine-carboxylate derived compound that acts as a potent and selective inhibitor of phosphatidylinositol 3-kinase a (PI3Ka; IC₅₀ = 800 pM). Blocks the proliferation of several cancer cells (IC₅₀ = 600 nM; 1.5 µM, and 7.8 µM for T47D, SK-BR3, and MCF-7 cells, respectively). Suppresses the growth and proliferation of hepatic stellate cells (HSC-T6 and LX-2 cells) and induces cell cycle arrest at G2/M phase in a dose and time-dependent manner. Induces apoptosis in HSC-T6 cells (~5 µM) as evidenced by morphological changes, activation of caspase-3, reduction in Bcl-2 levels, and loss of mitochondrial transmembrane potential. Exhibits anti-fibrolytic activity and diminishes the expression of profibrotic mediators, such as fibronectin and vimentin (~ 1 µM) and weakens the severity of hepatic damage in a murine model of carbon tetrachloride-induced fibrosis and reduces the phosphorylation of Akt and p70S6 kinase (10 mg/kg, p.o., 6d/week for 1 month).

PI3 K alpha inhibitor; anti-fibrolytic agent; HS-173

Cell permeable: yes

Primary Target
PI3Ka

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C.

Son, M.K., et al. 2013. Sci. Rep.3, 3470.

Lee, H., et al. 2013. Onc. Rep.30, 863.
Kim, O., et al. 2011. J. Med. Chem.54, 2455.

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Toxicity: Standard Handling (A)