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PLX-4720

Catalog No. T2473   CAS 918505-84-7
Synonyms: PLX4720

PLX-4720 is a potent and selective inhibitor of B-Raf (V600E) (IC50: 13 nM), equally potent to c-Raf-1(Y340D and Y341D mutations).

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PLX-4720 Chemical Structure
PLX-4720, CAS 918505-84-7
Pack Size Availability Price/USD Quantity
5 mg In stock $ 32.00
10 mg In stock $ 48.00
25 mg In stock $ 79.00
50 mg In stock $ 101.00
100 mg In stock $ 126.00
1 mL * 10 mM (in DMSO) In stock $ 42.00
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Purity: 99.89%
Purity: 99.62%
Purity: 99.5%
Purity: 97.78%
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Biological Description
Chemical Properties
Storage & Solubility Information
Description PLX-4720 is a potent and selective inhibitor of B-Raf (V600E) (IC50: 13 nM), equally potent to c-Raf-1(Y340D and Y341D mutations).
Targets&IC50 B-Raf (V600E):13 nM (cell free), B-Raf:160 nM (cell free), c-Raf-1 (Y340D/Y341D):6.7 nM (cell free)
In vitro PLX4720 inhibits B-Raf(V600E) with an IC50 of 13 nM. Consistent with the high degree of selectivity, ERK phosphorylation is potently inhibited by PLX4720 in B-Raf(V600E)-bearing tumor cell lines but not in cells lacking oncogenic B-Raf [1]. PLX4720 treatment significantly increased BIM expression in the PTEN+ (>14-fold) compared with the PTEN- cell lines (four-fold). Dual treatment of PTEN- cells with PLX4720 and a PI3K inhibitor enhanced BIM expression at both the mRNA and protein level and increased the level of apoptosis through a mechanism involving AKT3 and the activation of FOXO3a [2].
In vivo In B-Raf(V600E)-dependent tumor xenograft models, orally dosed PLX4720 causes significant tumor growth delays, including tumor regressions, without evidence of toxicity [1]. In vivo, PLX4720 treatment of 8505c orthotopic thyroid tumors inhibited tumor aggressiveness and significantly upregulated the thyroid differentiation markers thyroid transcription factor 1 and paired box gene 8 [3]. Treatment of orthotopic thyroid tumors, initiated 1 week after tumor cell implantation with PLX4720 caused a significant tumor growth delay and decreased distant metastases, without evidence of toxicity [4].
Kinase Assay In vitro Raf kinase activities: The in vitro kinase activities of wild type Raf and mutants are determined by measuring phosphorylation of biotinylated-MEK protein using Perkin-Elmer's AlphaScreen Technology. For each enzyme (0.1 ng), 20-μL reactions are carried out in 20 mM Hepes (pH 7.0), 10 mM MgCl2, 1 mM DTT, 0.01% Tween-20, 100 nM biotin-MEK protein, various ATP concentrations, and increasing concentrations of PLX-4720 at room temperature. Reactions are stopped at 2, 5, 8, 10, 20, and 30 minutes with 5 μL of a solution containing 20 mM Hepes (pH 7.0), 200 mM NaCl, 80 mM EDTA, and 0.3% BSA. The stop solution also includes phospho-MEK Antibody, Streptavidin-coated Donor beads and Protein A Acceptor beads. The antibody and beads are preincubated in stop solution in the dark at room temperature for 30 minutes. The final dilution of antibody is 1/2,000, and the final concentration of each bead is 10 μg/mL. The assay plates are incubated at room temperature for one hour then are read on a PerkinElmer AlphaQuest reader [1].
Cell Research Cells are treated with various concentrations PLX-4720 for 24, 48, and 72 hours. Cell proliferation is measured by using the CellTiter-Glo Luminescent Cell Viability Assay or MTT assay. For cell cycle analysis, supernatant and cells are collected, pelleted, and fixed with 70% ethanol. Before staining with propidium iodide (10 μg/mL), cells are incubated for 1 hour at 37 °C in 0.5 mg/mL RNase I to rid samples of residual RNA contamination. Samples are then analyzed by using the EPICS XL apparatus. For the assessment of apoptosis, media and cells are harvested and pelleted before staining with annexin-FITC and propidium iodide. Samples are subsequently analyzed by using the EPICS XL apparatus [1].
Animal Research Female athymic mice (NCr nu/nu) were implanted s.c. on day 0 with 30–60 mg COLO205 tumor fragments. Treatments began on day 11, when the mean estimated tumor mass was 104 mg (range, 95–113 mg). All animals were dosed with vehicle (5% DMSO, 1% methylcellulose) or PLX4720 suspended in vehicle by gavage daily for 14 consecutive days. Tumor burden (mg) was estimated from caliper measurements [1].
Synonyms PLX4720
Molecular Weight 413.83
Formula C17H14ClF2N3O3S
CAS No. 918505-84-7

Storage

Powder: -20°C for 3 years | In solvent: -80°C for 1 year

Solubility Information

Ethanol: < 1 mg/mL (insoluble or slightly soluble)

DMSO: 77 mg/mL (186.1 mM)

H2O: < 1 mg/mL (insoluble or slightly soluble)

TargetMolReferences and Literature

1. Tsai J, et al. Discovery of a selective inhibitor of oncogenic B-Raf kinase with potent antimelanoma activity. Proc Natl Acad Sci U S A, 2008, 105(8), 3041-3046. 2. Paraiso KH, et al. PTEN loss confers BRAF inhibitor resistance to melanoma cells through the suppression of BIM expression. Cancer Res, 2011, 71(7), 2750-2760. 3. Nucera C, et al. Targeting BRAFV600E with PLX4720 displays potent antimigratory and anti-invasive activity in preclinical models of human thyroid cancer. Oncologist. 2011;16(3):296-309. 4. Nucera C, et al. B-Raf(V600E) and thrombospondin-1 promote thyroid cancer progression. Proc Natl Acad Sci U S A, 2010, 107(23), 10649-10654.

Related compound libraries

This product is contained In the following compound libraries:
Anti-Cancer Active Compound Library Anti-Neurodegenerative Disease Compound Library Tyrosine Kinase Inhibitor Library Preclinical Compound Library Inhibitor Library Kinase Inhibitor Library Anti-Pancreatic Cancer Compound Library NO PAINS Compound Library Anti-Alzheimer's Disease Compound Library Autophagy Compound Library

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Keywords

PLX-4720 918505-84-7 MAPK Raf Inhibitor inhibit Raf kinases PLX 4720 PLX4720 inhibitor

 

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