Description
GDC-0941/Pictilisib (957054-30-7) is a potent and selective inhibitor of class I phosphatidylinositol-3-kinases (PI3K) with significant antitumor activity – IC50’s: PI3Kα = 3nM, PI3Kβ = 33 nM, PI3Kδ = 3 nM, PI3Kγ = 75 nM.1,2?? GDC-0941 is the chemical probe of choice for the pan-inhibition of class I PI3K’s.3?Currently in clinical trials.4
Uses
GDC-0941 is a potent and selective oral inhibitor of the class I PI3K. GDC-0941 demonstrated broad spectrum of activity in breast, ovarian, lung, and prostate cancer models. Studies has also shown GDC-0941 may enhance anti-tumor activity of Docetaxel (D494420) in human breast cancer models. Potent PI3K inhibitor.
Definition
ChEBI: A sulfonamide composed of indazole, morpholine, and methylsulfonyl-substituted piperazine rings bound to a thienopyrimidine ring.
in vivo
Pictilisib (GDC-0941) (150 mg/kg, p.o.) leads to tumor stasis in MCF7-neo/HER2-bearing animals model. Pictilisib (GDC-0941) and RP-56976 result in tumor regressions during the treatment period leading to enhanced antitumor responses[1]. Tumours in the Pictilisib (GDC-0941)-treated mice show a marked non-linear shrinkage, and when the Pictilisib (GDC-0941) treatment ceased, the tumours in the test cohort mice grow again[2]. Pictilisib (GDC-0941) (25 or 50 mg/kg) reduces tumor growth and PI3K and HIF-1 pathway activity in eGFP-FTC133 tumor-bearing mice[4].
IC 50
p110α: 3 nM (IC
50); p110α-H1047R: 3 nM (IC
50); p110α-E545K: 3 nM (IC
50); p110δ: 3 nM (IC
50); p110β: 33 nM (IC
50); p110γ: 75 nM (IC
50); mTOR: 0.58 μM (Ki); DNA-PK: 1.23 μM (IC
50); Autophagy
References
1) Folkes?et al.?(2008),?The identification of 2-(1H-indazol-4-yl)-6-(4-methanesulfonyl-piperazin-1-ylmethyl)-4-morpholin-4-yl-thieno[3,2-d]pyrimidine(GDC-0941) as a potent, selective, orally bioavailable inhibitor of class I PI3 kinase for the treatment of cancer;? J.?Med. Chem.,?51?5522
2) Raynaud?et al. (2009),?Biological properties of potent inhibitors of class I phosphatidylinositide 3-kinase: from PI-103 through PI-540, PI620 to the oral agent GDC-0941; Mol. Cancer Ther.,?8?1725
3) Knapp et al. (2013),?A public-private partnership to unlock the untargeted kinome; Nat. Chem. Biol.,?9?3
4) Sarker?et al. (2015),?First-in-human phase I study of pictilisib (GDC-0941), a potent pan-class I phosphatidylinositol-3-kinase (PI3K) inhibitor, in patients with advanced solid tumors; Clin. Cancer Res.,?21?77
