GDC-0941 | CAS:957054-30-7

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Name:GDC-0941; Pictilisib
Cat. No. :CS-0081
CAS No. :957054-30-7
Formula:C23H27N7O3S2
M. Wt. : 513.64
Solubility:DMSO: ≥ 29 mg/mL

GDC-0941 is a potent inhibitor of PI3Kα/δ with IC50 of 3 nM, with modest selectivity against p110β (11-fold) and p110γ (25-fold).IC50 & Target: IC50: 3 nM (PI3Kα), 3 nM (PI3Kδ)[5]In Vitro: GDC-0941 and docetaxel reduce tumor cell viability by 80% or greater in the breast cancer cell lines than single-agent treatment. GDC-0941 inhibits Akt phosphorylation and downstream targets of Akt signaling such as pPRAS40 and pS6 in Hs578T1.2 (PI3Kα wild-type), MCF7-neo/HER2 (PI3Kα-mutant), and MX-1 (PTEN-null) tumor models. GDC-0941 decreases the time of docetaxel-induced mitotic arrest prior to apoptosis[1]. GDC-0941 shows a high efficacy of antitumor activity in two gefitinib-resistant non-small cell lung cancer (NSCLC) cell lines, A549 and H460. GDC-0941 is highly efficacious in combination with U0126 in inducing cell growth inhibition, G0-G1 arrest and cell apoptosis. H460 cells with activating mutations of PIK3CA are relatively more sensitive to GDC-0941 than A549 cells with wild-type PIK3CA[3]. GDC-0941 reduces PI3K pathway activity in both cell lines, illustrated by decreased pAK. GDC-0941 significantly reduces secreted VEGF detected in the medium after hypoxic/anoxic exposure in all cells[4].In Vivo: GDC-0941 (150 mg/kg, p.o.) leads to tumor stasis in MCF7-neo/HER2-bearing animals model. GDC-0941 and docetaxel result in tumor regressions during the treatment period leading to enhanced antitumor responses[1]. Tumours in the GDC-0941-treated mice show a marked non-linear shrinkage, and when the GDC-0941 treatment ceased, the tumours in the test cohort mice grow again[2]. GDC-0941 (25 or 50 mg/kg) reduces tumor growth and PI3K and HIF-1 pathway activity in eGFP-FTC133 tumor-bearing mice[4].

Ni J, et al. Functional characterization of an isoform-selective inhibitor of PI3K-p110β as a potential anticancer agent. Cancer Discov. 2012 May;2(5):425-33. Wallin JJ, et al. GDC-0941, a novel class I selective PI3K inhibitor, enhances the efficacy of docetaxel in human breast cancer models by increasing cell death in vitro and in vivo.Clin Cancer Res. 2012 Jul 15;18(14):3901-11. Epub 2012 May 14. Zou ZQ, et al. The novel dual PI3K/mTOR inhibitor GDC-0941 synergizes with the MEK inhibitor U0126 in non-small cell lung cancer cells.Mol Med Report. 2012 Feb;5(2):503-8. Cheng H, et al. A genetic mouse model of invasive endometrial cancer driven by concurrent loss of Pten and Lkb1 Is highly responsive to mTOR inhibition. Cancer Res. 2014 Jan 1;74(1):15-23. Wullschleger S, et al. Quantitative MRI establishes the efficacy of PI3K inhibitor (GDC-0941) multi-treatments in PTEN-deficient mice lymphoma.Anticancer Res. 2012 Feb;32(2):415-20. Folkes AJ, et al. 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. 2008 Sep 25;51(18):5522-32. Burrows N, et al. GDC-0941 inhibits metastatic characteristics of thyroid carcinomas by targeting both the phosphoinositide-3 kinase (PI3K) and hypoxia-inducible factor-1α (HIF-1α) pathways.J Clin Endocrinol Metab. 2011 Dec;96(12):E1934-43. Epub 2011 Oct