PI 3-K Inhibitor XXI, GDC-0941

A cell-permeable thienopyrimidine compound that acts as a potent, ATP-competitive inhibitor against class IA (IC₅₀ = 3 nM/p110α, 33 nM/p110β, 3 nM/p110δ) & IB (IC₅₀ = 75 nM/p110γ) PI 3-K kinases, including the two known p110α hot spot mutants E454K & H1047R (IC₅₀ = 3 nM), while exhibiting much reduced or little potency against more than 200 other kinases, including TrkA, class II C2β, class IV mTOR & DNA-PK (IC₅₀ = 2.85, 0.67, 0.58, and 1.23 µM, respectively) and class III Vps34 (IC₅₀ >10 µM). Effectively inhibits cellular Akt S473 phosphorylation (IC₅₀ = 46 nM/U87MG, 37 nM/PC3, and 28 nM/MDA-MB-361) as well as proliferation in cancer cultures in vitro (GI₅₀ = 950/U87MG, 280/PC3, and 720 nM/MDA-MB-361) and greatly prevents the expansion of U87MG glioblastoma xenograft in mice in vivo (by 83%; 75 mg/kg/d p.o. for 21 days). Oral bioavailability is reported in human, dog, mouse, and rat.

Cell permeable: yes

Primary Target
PI 3-K

Reversible: yes

Packaged under inert gas

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 6 months at -20°C.

Use only fresh DMSO for reconstitution.

Tabe, Y., et al. 2014. Acta Haematol.131, 59.
Ware, J.A., et al. 2013. Mol. Pharm.10, 4047.
Junttila,.T., et al. 2009. Cancer Cell15, 429.
Raynaud, F.I., et al. 2009. Mol Cancer Ther.8, 1725.
Folkes, A. J., et al. 2008. J. Med. Chem.51, 5522.

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

Toxicity: Standard Handling (A)