PI-103
Catalog No.S1038
Molecular Weight(MW): 348.36
PI-103 is a multi-targeted PI3K inhibitor for p110α/β/δ/γ with IC50 of 2 nM/3 nM/3 nM/15 nM in cell-free assays, less potent to mTOR/DNA-PK with IC50 of 30 nM/23 nM.
5 Customer Reviews
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(D) IGROV parental, shControl (two independent clones) and ShPKCiota (two independent clones) were treated with 5 μM GDC-0941 and 1.5 μM PI-103 for 24 hours and subjected to western blot analysis with the indicated antibodies. Each experiment was performed in triplicate.
Oncogene, 2016, 35(19):2428-40. PI-103 purchased from Selleck.
(A) MCF7 cells pre-treated with 100 nM siRNA for 72 h were re-seeded with normal growth media and grown overnight, then further transfected by 100nM of fresh siRNA. Twenty-(A) four hours after transfection, the cells were further treated with PI-103 for 24 h and the cell lysates were immunoblotted with the indicated antibodies. (B) Breast cancer cells carrying BRCA1 mutations were treated with 1 mM of PI-103 for 24h (left) or increasing amounts of PI-103 for 24 h (right). Cell lysates were analyzed by Western blotting with the indicated antibodies.
Mol Carcinog 2012 52, 667-75 . PI-103 purchased from Selleck.
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Knockdown of BRCA1 sensitizes cells to PI3K/AKT pathway inhibitors. MCF7 cells transfected with either BRCA1-siRNA or control-siRNA were treated with increasing amounts of inhibitors targeting the PI3K/AKT pathway for 48 h in triplicate. Viable cells were measured by MTT assay.
Mol Carcinog 2012 ahead of print. PI-103 purchased from Selleck.
We treated all of drugs in T47D which has a PI3KCA H1044R mutation with the concentration shown below for 1 hour and performed western blot analysis using antibodies to phospho-AKT(SERINE 472), and total AKT.
Saraswati Sukumar of Johns Hopkins University School of Medicine PI-103 purchased from Selleck.
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Breast cancer cells were pretreated with 100ng/ml EGF for 15 min and then treated with the indicated concentrations of PI-103 for 24 hours.
Dr. Zhang of Tianjin Medical University. PI-103 purchased from Selleck.
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Biological Activity
| Description | PI-103 is a multi-targeted PI3K inhibitor for p110α/β/δ/γ with IC50 of 2 nM/3 nM/3 nM/15 nM in cell-free assays, less potent to mTOR/DNA-PK with IC50 of 30 nM/23 nM. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Features | The first potent, synthetic mTOR inhibitor. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Targets |
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| In vitro |
PI-103 potently inhibits both the rapamycin-sensitive (mTORC1) and rapamycin-insensitive (mTORC2) complexes of the protein kinase mTOR. [1] PI-103 inhibits constitutive and growth factor-induced PI3K/Akt, as well as mTORC1 activation. [2] In blast cells, PI-103 inhibits leukemic proliferation, the clonogenicity of leukemic progenitors and induces mitochondrial apoptosis, especially in the compartment containing leukemic stem cells. PI-103 inhibits p110α >200-fold more potently than p110β. PI-103 also potently blocks production of PI(3,4)P2 and PIP3 in adipocytes and PIP3 in myotubes. [2] PI-103 inhibits phosphorylation of Akt with an IC95 100-fold lower than that for LY294002. Strikingly, PI-103 completely protects animals from insulin-stimulated decline in blood glucose. PI-103 has additive proapoptotic effects with etoposide in blast cells and in immature leukemic cells. [2] |
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| Cell Data |
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| In vivo | When tumors reach 50-100 mm3, animals are randomized and treated with vehicle or PI-103. PI-103 exhibits significant activity, decreasing average tumor size by 4-fold after 18 days. [2] Mice treated with PI-103 have no obvious signs of toxicity premorbidly (based on body weight, food and water intake, activity, and general exam) or at necropsy. Treated tumors display decreased levels of phosphorylated Akt and S6, consistent with blockade of p110α and mTOR. PI-103 treatment is cytostatic to glioma xenografts. [2] |
Protocol
| Kinase Assay:[3] |
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Enzyme Assays: Phosphatidylinositide 3-kinase inhibitory activity was determined using a scintillation proximity assay in the presence of 1 μmol/L ATP. Inhibition of mTOR protein kinase was determined using a TR-FRET-based LanthaScreen method from Invitrogen. Compounds were assayed at a maximum concentration of 10 μmol/L in the presence of 1 μmol/L ATP, and IC50 values were determined using GraphPad Prism software. |
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| Cell Research:[2] |
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| Animal Research:[2] |
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Solubility (25°C)
| In vitro | DMSO | 24 mg/mL (68.89 mM) |
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| Water | Insoluble | |
| Ethanol | Insoluble | |
| In vivo | Add solvents individually and in order: 1% DMSO+30% polyethylene glycol+1% Tween 80 |
30 mg/mL |
* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.
Chemical Information
| Molecular Weight | 348.36 |
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| Formula | C19H16N4O3 |
| CAS No. | 371935-74-9 |
| Storage | powder |
| Synonyms | N/A |
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