PF-04691502

Catalog No.S2743 Batch:S274302

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Technical Data

Formula

C22H27N5O4
Molecular Weight 425.48 CAS No. 1013101-36-4
Solubility (25°C)* In vitro DMSO 14 mg/mL (32.9 mM)
Water Insoluble
Ethanol Insoluble
* <1 mg/ml means slightly soluble or insoluble.
* 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.
* Room temperature shipping (Stability testing shows this product can be shipped without any cooling measures.)

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Biological Activity

Description PF-04691502 (PF4691502) is an ATP-competitive PI3K(α/β/δ/γ)/mTOR dual inhibitor with Ki of 1.8 nM/2.1 nM/1.6 nM/1.9 nM and 16 nM in cell-free assays, little activity against either Vps34, AKT, PDK1, p70S6K, MEK, ERK, p38, or JNK. PF-04691502 induces apoptosis. Phase 2.
Targets
PI3Kδ [1]
(Cell-free assay)		 PI3Kα [1]
(Cell-free assay)		 PI3Kγ [1]
(Cell-free assay)		 PI3Kβ [1]
(Cell-free assay)		 P-Akt (S473) [1]
(Cell-free assay)		 View More
1.6 nM(Ki) 1.8 nM(Ki) 1.9 nM(Ki) 2.1 nM(Ki) 3.8 nM
In vitro PF-04691502 potently inhibits recombinant class I PI3K and mTOR in biochemical assays and suppresses transformation of avian fibroblasts mediated by wild-type PI3K γ, δ, or mutant PI3Kα. In PIK3CA-mutant and PTEN-deleted cancer cell lines, PF-04691502 reduces phosphorylation of AKT T308 and AKT S473 (IC(50) of 7.5-47 nM and 3.8-20 nM, respectively) and inhibits cell proliferation (IC(50) of 179-313 nM). PF-04691502 inhibits mTORC1 activity in cells as measured by PI3K-independent nutrient stimulated assay, with an IC(50) of 32 nM and inhibits the activation of PI3K and mTOR downstream effectors including AKT, FKHRL1, PRAS40, p70S6K, 4EBP1, and S6RP. Short-term exposure to PF-04691502 predominantly inhibits PI3K, whereas mTOR inhibition persists for 24 to 48 hours. PF-04691502 induces cell cycle G(1) arrest, concomitant with upregulation of p27 Kip1 and reduction of Rb. [1]
In vivo Antitumor activity of PF-04691502 is observed in U87 (PTEN null), SKOV3 (PIK3CA mutation), and gefitinib- and erlotinib-resistant non-small cell lung carcinoma xenografts. [1] PF-04691502 inhibits tumor growth at 7 days by 72%. FDG-PET imaging revealed that PF-04691502 reduces glucose metabolism dramatically. Tissue biomarkers of PI3K/mTOR pathway activity, p-AKT (S473), and p-RPS6 (S240/244), are also dramatically inhibited following PF-04691502 treatment. [2]

Protocol (from reference)

Kinase Assay:[1]
  • Kinase Assay

    The fluorescence polarization assay for ATP competitive inhibition is done as follows: mPI3Kα dilution solution (90 nM) is prepared in fresh assay buffer (50 mM Hepes pH 7.4, 150 mM NaCl, 5 mM DTT, 0.05% CHAPS) and kept on ice. The enzyme reaction contains 0.5 nM mouse PI3Kα (p110α/p85α complex purified from insect cells), 30 μM PIP2, PF-04691502 (0, 1, 4, and 8 nM), 5 mM MgCl2, and 2-fold serial dilutions of ATP (0–800 μM). Final dimethyl sulfoxide is 2.5%. The reaction is initiated by the addition of ATP and terminated after 30 minutes with 10 mM EDTA. In a detection plate, 15 uL of detector/probe mixture containing 480 nM GST-Grp1PH domain and 12 nM TAMRA tagged fluorescent PIP3 in assay buffer is mixed with 15 uL of kinase reaction mixture. The plate is shaken for 3 minutes, and incubated for 35 to 40 minutes before reading on an LJL Analyst HT.

Cell Assay:[1]
  • Cell lines

    BT20, U87MG, and SKOV3 cells

  • Concentrations

    0-3 mM

  • Incubation Time

    3 days

  • Method

    BT20, U87MG, and SKOV3 cells are plated at 3,000 cell/well in 96-well culture plates in growth medium with 10% FBS. Cells are incubated overnight and treated with DMSO (0.1% final) or serial diluted compound for 3 days. Resazurin is added to 0.1 mg/mL. Plates are incubated at 37 °C in 5% CO2 for 3 hours. Fluorescence signals are read as emission at 590 nm after excitation at 530 nm. IC50 values are calculated by plotting fluorescence intensity to drug concentration in nonlinear curve
Animal Study:[2]
  • Animal Models

    LSL-KrasG12D heterozygous mice (B6.129-Kras tm4Tyj) and Ptendel mice (c;129S4-Pten tm1Hwu/J), Orthotopic transplant of ovarian tumors

  • Dosages

    daily at either 7.5 or 10 mg/kg

  • Administration

    Administered via oral gavage

Customer Product Validation

Data from [Data independently produced by Mol Cancer Res, 2014, 12(10), 1520-31]

Data from [Data independently produced by Toxicol Lett, 2013, 220(2), 150-6]

, , Dr. Zhang of Tianjin Medical University

Data from [Data independently produced by , , Onco Targets Ther, 2018, 11:943-953]

Selleck's PF-04691502 has been cited by 50 publications

Inhibitor PF-04691502 works as a senolytic to regulate cellular senescence [ Exp Gerontol, 2024, 186:112359] PubMed: 38184267
Zebrafish functional xenograft vasculature platform identifies PF-502 as a durable vasculature normalization drug [ iScience, 2023, 26(9):107734] PubMed: 37680473
Functional restoration of lysosomes and mitochondria through modulation of AKT activity ameliorates senescence [ Exp Gerontol, 2023, 173:112091] PubMed: 36657533
Glucose metabolic upregulation via phosphorylation of S6 ribosomal protein affects tumor progression in distal cholangiocarcinoma [ BMC Gastroenterol, 2023, 23(1):157] PubMed: 37193984
RNF43G659fs is an oncogenic colorectal cancer mutation and sensitizes tumor cells to PI3K/mTOR inhibition [ Nature Communications, 2022, 3181-2022)] PubMed: None
RNF43 G659fs is an oncogenic colorectal cancer mutation and sensitizes tumor cells to PI3K/mTOR inhibition [ Nat Commun, 2022, 13(1):3181] PubMed: 35676246
A novel PI3K inhibitor XH30 suppresses orthotopic glioblastoma and brain metastasis in mice models [ Acta Pharm Sin B, 2022, 12(2):774-786] PubMed: 35256946
A novel PI3K inhibitor XH30 suppresses orthotopic glioblastoma and brain metastasis in mice models [ Acta Pharm Sin B, 2022, 12(2):774-786] PubMed: 35256946
Leveraging patient derived models of FGFR2 fusion positive intrahepatic cholangiocarcinoma to identify synergistic therapies [ NPJ Precis Oncol, 2022, 6(1):75] PubMed: 36274097
Identification of New Vulnerabilities in Conjunctival Melanoma Using Image-Based High Content Drug Screening [ Cancers (Basel), 2022, 14(6)1575] PubMed: 35326726

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SHIPPING AND STORAGE
Selleck products are transported at room temperature. If you receive the product at room temperature, please rest assured, the Selleck Quality Inspection Department has conducted experiments to verify that the normal temperature placement of one month will not affect the biological activity of powder products. After collecting, please store the product according to the requirements described in the datasheet. Most Selleck products are stable under the recommended conditions.

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