957054-33-0
957054-33-0 structure
- Name: Pictilisib dimethanesulfonate
- Chemical Name: GDC0941
- CAS Number: 957054-33-0
- Molecular Formula: C25H35N7O9S4
- Molecular Weight: 705.847
- Catalog: Biochemical Inhibitor Protein tyrosine kinase
- Create Date: 2018-05-21 08:00:00
- Modify Date: 2025-08-21 15:57:28
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GDC-0941 dimethanesulfonate is a potent inhibitor of PI3Kα/δ with IC50 of 3 nM, with modest selectivity against p110β (11-fold) and p110γ (25-fold).
| Name | GDC0941 |
|---|---|
| Synonyms |
2-(1H-Indazol-4-yl)-6-{[4-(methylsulfonyl)-1-piperazinyl]methyl}-4-(4-morpholinyl)thieno[3,2-d]pyrimidine methanesulfonate (1:2)
Thieno[3,2-d]pyrimidine, 2-(1H-indazol-4-yl)-6-[[4-(methylsulfonyl)-1-piperazinyl]methyl]-4-(4-morpholinyl)-, methanesulfonate (1:2) MFCD12546329 GDC-0941 (dimethanesulfonate) |
| Description | GDC-0941 dimethanesulfonate is a potent inhibitor of PI3Kα/δ with IC50 of 3 nM, with modest selectivity against p110β (11-fold) and p110γ (25-fold). |
|---|---|
| Related Catalog | |
| Target |
p110α:3 nM (IC50) p110α-H1047R:3 nM (IC50) p110α-E545K:3 nM (IC50) p110δ:3 nM (IC50) p110β:33 nM (IC50) p110γ:75 nM (IC50) mTOR:0.58 μM (Ki) DNA-PK:1.23 μM (IC50) Autophagy |
| 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]. |
| Cell Assay | Cells are treated at EC50 concentrations of GDC-0941, docetaxel, or both for 4 or 24 hours and lysed in 1×Cell Extraction Buffer supplemented with protease inhibitors and Phosphatase Inhibitor Cocktails 1 and 2. Protein concentrations are determined using the Pierce BCA Protein Assay Kit. For immunoblots, equal amounts of protein are separated by electrophoresis through NuPAGE Bis-Tris 10% gradient gels, transferred onto polyvinylidene difluoride membranes using the Criterion system, and probed with monospecific primary antibodies. Specific antigen-antibody interactions are detected with IRDye 680 or IRDye 800 infrared secondary antibodies using a LI-COR imaging system[1]. |
| Animal Admin | Mice[1] Female nu/nu mice are inoculated subcutaneously with MCF7-neo/HER2 or MX-1 breast cancer cells. When tumors reach a mean volume of 200 to 250 mm3, animals are size-matched and distributed into groups consisting of 10 animals per group. Docetaxel formulated in 3% EtOH, 97% saline is administered intravenously once weekly. GDC-0941, formulated in MCT (0.5% methylcellulose, 0.2% Tween-80) is dosed orally and daily. MAXF1162 is an HER2+/ER+/PR+ patient-derived breast cancer tumor xenograft model established by directly implanting tumors subcutaneously from patient to NMRI nu/nu mice. Tumor volume is calculated. Tumor sizes are recorded twice weekly over the course of a study. |
| References |
| Melting Point | >280°C (dec.) |
|---|---|
| Molecular Formula | C25H35N7O9S4 |
| Molecular Weight | 705.847 |
| Exact Mass | 705.137878 |
| Storage condition | Refrigerator |