LGK-974

PORCN inhibitor,potent and specific CAS# 1243244-14-5

LGK-974

Catalog No. BCC5103----Order now to get a substantial discount!

Product Name & Size Price Stock
LGK-974:5mg $106.00 In stock
LGK-974:10mg $180.00 In stock
LGK-974:25mg $424.00 In stock
LGK-974:50mg $742.00 In stock
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Quality Control of LGK-974

Quality Control & MSDS

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Chemical structure

LGK-974

3D structure

Chemical Properties of LGK-974

Cas No. 1243244-14-5 SDF Download SDF
PubChem ID 46926973 Appearance Powder
Formula C23H20N6O M.Wt 396.44
Type of Compound N/A Storage Desiccate at -20°C
Solubility DMSO : ≥ 32 mg/mL (80.72 mM)
H2O : < 0.1 mg/mL (insoluble)
*"≥" means soluble, but saturation unknown.
Chemical Name 2-[5-methyl-6-(2-methylpyridin-4-yl)pyridin-3-yl]-N-(5-pyrazin-2-ylpyridin-2-yl)acetamide
SMILES CC1=C(N=CC(=C1)CC(=O)NC2=NC=C(C=C2)C3=NC=CN=C3)C4=CC(=NC=C4)C
Standard InChIKey XXYGTCZJJLTAGH-UHFFFAOYSA-N
Standard InChI InChI=1S/C23H20N6O/c1-15-9-17(12-28-23(15)18-5-6-25-16(2)10-18)11-22(30)29-21-4-3-19(13-27-21)20-14-24-7-8-26-20/h3-10,12-14H,11H2,1-2H3,(H,27,29,30)
General tips For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.
We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months.
Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it.
About Packaging 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial.
2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial.
3. Try to avoid loss or contamination during the experiment.
Shipping Condition Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request.

Biological Activity of LGK-974

DescriptionLGK-974 is a potent and specific inhibitor of PORCN.
TargetsPORCN    

Protocol

Kinase Assay [1]
Radioligand binding assay: using the aforementioned membrane preps, filtration binding assays are performed. To reduce nonspecific binding, 96-well filtration plates are precoated as suggested by the manufacturer with 0.1% BSA and then washed four times with 0.1% BSA. Membrane preps (50 μg total protein) are incubated in polypropylene 96-well plates with 6.6 nM 3H-GNF-1331 in the presence or absence of a testing compound in binding buffer (50 mM Tris, pH 7.5, 5 mM MgCl2, 1 mM EDTA, 0.1% BSA) plus EDTA-free protease inhibitor mixture in a final volume of 150 μL for 3 h at room temperature. Binding reaction mixtures are then transferred to the precoated 96-well filtration plates, filtered, and washed using a 96-pin FilterMate Harvester. Radioactive signals are obtained using a Microplate Scintillation Counter TopCount. Curve fitting is performed using Prism[1].

Cell Assay [1]
HN30 cells and UMSCC cells are used. For TaqMan assay, 2×106 cells per well are plated into six-well cell culture plates and treated with or without LGK974 in amultipoint dose-response. RNA samples are collected after 48 h. For colony formation assays, 2×103 cells per well are plated into six-well cell culture plates with or without compound treatment. Cells are stained with crystal violet 1 wk later[1].

Animal Administration [1]
Mice and Rats[1] Nude mice (or nude rats) bearing the mouse mammary tumor virus-Wnt1, HN30, or SNU1076 tumors are randomized according to tumor volume. LGK974 is formulated in 10% (vol/vol) citrate buffer (pH 2.8)/90% (vol/vol) citrate buffer (pH 3.0) or 0.5% MC/0.5% Tween 80 and administered by oral gavage at a dosing volume of 10 μL/g animal body weight. Body weight is monitored daily, and tumor sizes are assessed three times per week after the tumors are palpable. Tumor sizes are determined by using caliper measurements. Tumor volumes are calculated with a formula (length×width×height)/2. The plasma concentrations and exposures of LGK974 in the tumor-bearing nude mice (n=2 per dosing group) are determined on day 14. Blood samples (50 μL) are collected by serial retroorbital sampling at 1, 3, 7, 16, and 24 h postdose. The blood samples are centrifuged, and plasma is separated and frozen until analysis by liquid chromatography/MS/MS. For tolerability studies, LGK974 is administrated to nontumor-bearing Wistar rats one time per day by oral gavage at 3 or 20 mg/kg per day. Necropsies are performed at the end of the study. Tissues are fixed in 10% (vol/vol) neutralbuffered formalin, sectioned, and subjected to H&E; staining.

References:
[1]. Liu J, et al. Targeting Wnt-driven cancer through the inhibition of Porcupine by LGK974. Proc Natl Acad Sci U S A. 2013 Dec 10;110(50):20224-9. [2]. Tammela T, et al. A Wnt-producing niche drives proliferative potential and progression in lung adenocarcinoma. Nature. 2017 May 18;545(7654):355-359.

LGK-974 Dilution Calculator

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LGK-974 Molarity Calculator

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Preparing Stock Solutions of LGK-974

1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 2.5224 mL 12.6122 mL 25.2245 mL 50.449 mL 63.0612 mL
5 mM 0.5045 mL 2.5224 mL 5.0449 mL 10.0898 mL 12.6122 mL
10 mM 0.2522 mL 1.2612 mL 2.5224 mL 5.0449 mL 6.3061 mL
50 mM 0.0504 mL 0.2522 mL 0.5045 mL 1.009 mL 1.2612 mL
100 mM 0.0252 mL 0.1261 mL 0.2522 mL 0.5045 mL 0.6306 mL
* Note: If you are in the process of experiment, it's necessary to make the dilution ratios of the samples. The dilution data above is only for reference. Normally, it's can get a better solubility within lower of Concentrations.

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The Institute of Cancer Research

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The University of Tokyo
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Korea University
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Background on LGK-974

LGK-974 is a potent and specific small-molecule inhibitor of Porcupine (PORCN) with IC50 value of 1nM [1].

LGK-974 is discovered as a highly specific and potent PORCN inhibitor. Even 20μM LGK974 shows no significant cytotoxicity in cells. LGK-974 inhibits Wnt signaling in the Wnt co-culture assay with an IC50 of 0.4nM. It can block the PORCN-dependent Wnt secretion in a dose-dependent manner. In MMTV-Wnt1 tumor model, LGK-974 induces significant tumor regression through affecting the Wnt signaling events. It inhibits both AXIN2 expression and phospho-LRP6 (pLRP6) levels. It is proved that LGK974 promotes tumor regressions at doses that spare normal tissues. Additionally, LGK-974 potently reduces Wnt-dependent AXIN2 mRNA levels in HN30 cells with IC50 value of 0.3nM and it strongly attenuates HN30 colony formation, partly through inhibiting the β-catenin–dependent activities. Moreover, the anti-tumor efficacy has also been found in the mouse model of Wnt-dependent human HNSCC cell Line [1].

References:
[1] Liu J, Pan S, Hsieh MH, Ng N, Sun F, Wang T, Kasibhatla S, Schuller AG, Li AG, Cheng D, Li J, Tompkins C, Pferdekamper A, Steffy A, Cheng J, Kowal C, Phung V, Guo G, Wang Y, Graham MP, Flynn S, Brenner JC, Li C, Villarroel MC, Schultz PG, Wu X, McNamara P, Sellers WR, Petruzzelli L, Boral AL, Seidel HM, McLaughlin ME, Che J, Carey TE, Vanasse G, Harris JL. Targeting Wnt-driven cancer through the inhibition of Porcupine by LGK974. Proc Natl Acad Sci U S A. 2013 Dec 10;110(50):20224-9.

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References on LGK-974

The Wnt inhibitor LGK-974 enhances radiosensitivity of HepG2 cells by modulating Nrf2 signaling.[Pubmed:28627706]

Int J Oncol. 2017 Aug;51(2):545-554.

Nuclear factor (erythroid-derived 2)-like 2 (NRF2) is a master regulator of antioxidant and detoxification activities that can eliminate reactive oxygen species (ROS) produced via irradiation. However, Nrf2 overexpression in liver cancer cells may cause both radioresistance and chemoresistance. Reducing Nrf2 levels can enhance the radiosensitivity of HepG2 cells. Wingless/int-3A (Wnt3A) is a Wnt family protein that mainly activates the canonical Wnt signaling pathway. Recent studies showed that the Axin1-GSK-3beta protein complex, a component of the canonical Wnt signaling pathway, can capture Nrf2 and facilitate its ubiquitination and proteasomal degradation in the cytoplasm. This protein complex is degraded upon activation of the Wnt signaling pathway. In the present study, we treated HepG2 cells with the Wnt3A inhibitor LGK-974, an effective and specific PORCN inhibitor that can prevent the formation of a proper folding of the Wnt protein in the endoplasmic reticulum. We found that HepG2 cells became more sensitive to radiation with increasing LGK-974 concentrations. Upon 2 Gy or 4 Gy irradiation, the cells treated with LGK-974 more frequently underwent apoptosis and grew less rapidly. PCR and western blot results showed that inhibiting the secretion of Wnt3A blocked the Wnt signaling pathway and prevented Nrf2 signaling. Notably, the Wnt inhibitor may serve as a radiosensitizing drug.

Description

LGK974 (WNT974) is an orally bioavailable and specific Porcupine (PORCN) inhibitor with an IC50 of 0.1 nM.

Keywords:

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