MAPK Raf PLX4720


Catalog No. T2473   CAS 918505-84-7

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).

PLX4720, CAS 918505-84-7
Pack Size Availability Price/USD Quantity
5 mg In stock 42.00
10 mg In stock 55.00
25 mg In stock 88.00
50 mg In stock 113.00
100 mg In stock 140.00
1 mL * 10 mM (in DMSO) In stock 42.00
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Purity 99.50%
Purity 97.78%
Purity 99.89%
Biological Description
Chemical Properties
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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 ,   B-Raf (V600E) ,   BRK ,   C-Raf-1 (Y340D/Y341D) ,   FRK
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 from the AlphaScreen Protein A Detection Kit. 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.
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.(Only for Reference)
Cell lines: COLO205, A375, WM2664, COLO829, HT716, SW620, H460, Calu-6, HCT116, SK-MEL2, SK-MEL3, Lovo, H1299, 1205Lu, and C8161 cells
Molecular Weight 413.83
Formula C17H14ClF2N3O3S
CAS No. 918505-84-7


0-4℃ for short term (days to weeks), or -20℃ for long term (months).

Solubility Information

DMSO: 77 mg/mL (186.1 mM)

Ethanol: <1 mg/mL

Water: <1 mg/mL

( < 1 mg/ml refers to the product slightly soluble or insoluble )

Solution 1

1% CMC+0.5% Tween-80: 30 mg/mL


References 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. 5. Rizzolio S, et al. Neuropilin-1 upregulation elicits adaptive resistance to oncogene-targeted therapies. J Clin Invest. 2018 Aug 31;128(9):3976-3990.

Related compound libraries

This product is contained In the following compound libraries:
Bioactive Compound Library Inhibitor Library Anti-cancer Compound Library Apoptosis Compound Library Autophagy Compound Library Neuronal Signaling Compound Library MAPK Inhibitor Library Tyrosine kinase inhibitor library Immunology/Inflammation Compound Library Kinase Inhibitor Library Fluorochemical Library Anti-cancer Metabolism Compound Library Preclinical Compound Library Anti-obesity Compound Library Anti-cancer Active Compound library Target-Focused Phenotypic Screening Library HIF-1 Signaling Pathway Compound Library Anti-COVID-19 Compound Library X Domain-Targeted compound library (CADD) Neurodegenerative disease-related Compound Library Anti-Pancreatic Cancer Compound Library Anti-Alzheimer's Disease Compound Library Glutamine Metabolism Compound Library

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