Picropodophyllin (PPP)

Catalog No.S7668 Batch:S766802

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Technical Data

Formula

C22H22O8
Molecular Weight 414.41 CAS No. 477-47-4
Solubility (25°C)* In vitro DMSO 82 mg/mL (197.87 mM)
Water Insoluble
Ethanol Insoluble
In vivo (Add solvents to the product individually and in order)
Clear solution
8%DMSO 92%Corn oil
3.0mg/ml Taking the 1 mL working solution as an example, add 80 μL of 37.5 mg/ml clear DMSO stock solution to 920 μL of corn oil and mix evenly. The mixed solution should be used immediately for optimal results. 
* <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 Picropodophyllin (PPP, AXL1717) is a IGF-1R inhibitor with IC50 of 1 nM. It displays selectivity for IGF-1R and does not coinhibit tyrosine phosphorylation the IR, or of a selected panel of receptors less related to IGF-IR(FGF-R, PDGF-R, OR EGF-R). Picropodophyllin (PPP) induces apoptosis with antineoplastic activity.
Targets
IGF-1R [1]
(Cell-free assay)
1 nM
In vitro In intact cells, PPP efficiently inhibits IGF-1-stimulated IGF-1R, Akt (Ser 473) and Erk1/2 phosphorylation. Picropodophyllin specifically inhibits cell growth, and induces apoptosis in cultured IGF-1R-positive tumor cells. [1] Picropodophyllin synergistically sensitizes HMCL, primary human MM and murine 5T33MM cells to ABT-737 and ABT-199 by further decreasing cell viability and enhancing apoptosis. [3] Picropodophyllin and sorafenib synergistically suppress the proliferation and motility of hepatocellular carcinoma cells. [4]
In vivo In SCID mice xenografted with human ES-1, BE, and PC3, Picropodophyllin (20 mg/kg/12 h, i.p.) causes complete tumor regression. [1] In the 5T33MM mouse model, Picropodophyllin also shows a marked antitumor activity, and causes a significant increase in survival. [2]

Protocol (from reference)

Kinase Assay:

[1]
  • In vitro tyrosine kinase assays.

    Assay of IGF-1R-catalyzed substrate phosphorylation of pTG, using a 96-well plate tyrosine kinase assay kit, is performed. We use recombinant epidermal growth factor receptor, immunoprecipitated IR from HEPG2, immunoprecipitated IGF-1R from P6 cells, and IGF-1R immunodepleted supernatant from P6 (representing “non-IGF-1R tyrosine kinases”). After 30-min treatment of the receptors with the desired compounds in the kinase buffer [50 mM HEPES buffer (pH 7.4), 20 mM MgCl2, 0.1 MnCl2, and 0.2 Na3VO4], the kinase reaction is activated by addition of ATP. The phosphorylated polymer substrate is probed with a phosphotyrosine-specific monoclonal antibody conjugated to horseradish peroxidase, clone PT-66. Color is developed with horseradish peroxidase chromogenic substrate O-phenylenediamine dihydrochloride and quantitated by spectrophotometry (ELISA reader). IGF-1R tyrosine autophosphorylation is analyzed by a sandwich ELISA assay. Briefly, 96-well plates are coated overnight at 4°C with 1 μg/well of an antibody to IGF-1R β-subunit. The plates are blocked with 1% BSA in PBS Tween for 1 h, and then 80 μg/well of total protein lysate from the P6 cell line is added. As a negative control we use total protein lysate from the R- cell line. The investigated compounds are added in tyrosine kinase buffer without ATP at room temperature for 30 min before kinase activation with ATP. Kinase assay is performed using the Sigma kit (see above). After spectrophotometry the IC50 values of inhibitors are determined using the REGRESSION function of Statistica program.
Cell Assay:

[1]
  • Cell lines

    Melanoma cells (FM 55, SK-MEL-28, SK-MEL-5, C8161, DFB, DFW and AA), sarcoma cells (RD-ES), breast carcinoma cells (MCF 7), prostate carcinoma cells (PC3), hepatoma cells (HepG2) and embryonic mouse fibroblasts (P6 and R-)

  • Concentrations

    ~15 μM

  • Incubation Time

    48 hours

  • Method

    The determinations are performed using the Cell proliferation kit II, which is based on colorimetric change of the yellow tetrazolium salt 2,3-bis[2-methoxy-4-nitro-5-sulfophenyl]-2H-tetrazolium-5-carboxanilide inner salt in orange formazan dye by the respiratory chain of viable cell. All of the standards and experiments are performed in triplicates.
Animal Study:

[1]
  • Animal Models

    SCID mice bearing ES-1, BE, or PC3 xenografts that express IGF-1R, or R- v-src (IGF-1R negative) and P12 (overexpressing IGF-1 and IGF-1R)

  • Dosages

    20 mg/kg/12 h

  • Administration

    i.p.

Customer Product Validation

Data from [Data independently produced by , , Blood, 2013, 122(9):1621-33]

Data from [Data independently produced by , , Stem Cells, 2016, 34(4):820-31.]

Data from [Data independently produced by , , Cancer Sci, 2018, 109(4):1166-1176]

Data from [Data independently produced by , , FEBS J, 2017, 284(13):2096-2109]

Selleck's Picropodophyllin (PPP) has been cited by 43 publications

Nutrient-regulated dynamics of chondroprogenitors in the postnatal murine growth plate [ Bone Res, 2023, 11(1):20] PubMed: 37080994
Synergy of 5-aminolevulinate supplement and CX3CR1 suppression promotes liver regeneration via elevated IGF-1 signaling [ Cell Rep, 2023, 42(8):112984] PubMed: 37578861
IGF1R Inhibition Enhances the Therapeutic Effects of Gq/11 Inhibition in Metastatic Uveal Melanoma Progression [ Mol Cancer Ther, 2023, 22(1):63-74] PubMed: 36223548
Inhibition of the epigenetically activated miR-483-5p/IGF-2 pathway results in rapid loss of meningioma tumor cell viability [ J Neurooncol, 2023, 162(1):109-118.] PubMed: 36809604
Effect of insulin-like growth factor system on luteinising angiogenesis [ Reprod Fertil, 2023, 4(2)e220057 RAF-22-0057] PubMed: 37052337
A Role for Insulin-like Growth Factor 1 in the Generation of Epileptic Spasms [ Ann Neurol, 2022, 10.1002/ana.26383] PubMed: 35467038
Hedgehog-responsive PDGFRa(+) fibroblasts maintain a unique pool of alveolar epithelial progenitor cells during alveologenesis [ Cell Rep, 2022, 39(1):110608] PubMed: 35385750
Coal dust nanoparticles induced pulmonary fibrosis by promoting inflammation and epithelial-mesenchymal transition via the NF-κB/NLRP3 pathway driven by IGF1/ROS-mediated AKT/GSK3β signals [ Cell Death Discov, 2022, 8(1):500] PubMed: 36581638
Cytochrome P450 27C1 Level Dictates Lung Cancer Tumorigenicity and Sensitivity towards Multiple Anticancer Agents and Its Potential Interplay with the IGF-1R/Akt/p53 Signaling Pathway [ Int J Mol Sci, 2022, 23(14)7853] PubMed: 35887201
Insulin-like growth factor 1 regulates excitatory synaptic transmission in pyramidal neurons from adult prefrontal cortex [ Neuropharmacology, 2022, 217:109204] PubMed: 35931212

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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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