Name: ZSTK474
Brand: Selleck Chemicals
SKU: S1072
Rating: 5 (84 reviews)

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Quality Control

Batch: Purity: 99.98%

99.98

Related Targets	Akt mTOR GSK-3 ATM/ATR DNA-PK AMPK PDPK1 PTEN PP2A PDK
Other PI3K Inhibitors	GDC-0077 (Inavolisib) SAR405 Quercetin (Sophoretin) LY294002 XL147 analogue Tersolisib (STX-478) Buparlisib (BKM120) 740 Y-P (PDGFR 740Y-P) GO-203 TFA Eganelisib (IPI-549)

Cell Culture, Treatment & Working Concentration

Cell Lines	Assay Type	Concentration	Incubation Time	Activity Description
Sf21 insect cells	Function assay		1 h	Inhibition of bovine recombinant PI3K p110delta expressed in Sf21 insect cells using phosphatidylinositol as substrate after 1 hr by phosphoimaging, IC50=0.7 nM
human HCT116 cells	Function assay		15 mins	Inhibition of PIK3CA H1047R mutant-mediated cell signaling in human HCT116 cells expressing PTEN assessed as inhibition of insulin-induced pAkt/PKB phosphorylation at Thr308 treated for 15 mins before insulin challenge measured after 5 mins by immunoblotting, IC50=78 nM
human LNCAP cells	Proliferation assay		3 days	Antiproliferative activity against human LNCAP cells after 3 days by MTS assay, IC50=0.21 μM
human NZB5 cells	Proliferation assay		5 days	Antiproliferative activity against human NZB5 cells expressing wild type p110alpha assessed as incorporation of [3H]thymidine after 5 days, IC50=0.22 μM
human NZOV9 cells	Proliferation assay		5 days	Antiproliferative activity against human NZOV9 cells expressing p110alpha kinase Y1021C mutant assessed as incorporation of [3H]thymidine after 5 days, IC50=0.29 μM
human MDA-MB-468 cells	Cytotoxic assay		48 h	Cytotoxicity against PTEN-deficient human MDA-MB-468 cells assessed as inhibition of cell growth after 48 hrs by Cell Titer 96 assay
human A549 cells	Function assay	10 μM	1 h	Inhibition of PI3K in human A549 cells assessed as reduction in pAkt level at 10 uM after 1 hr by Western blotting analysis
human DMS114 cells	Growth inhibition assay			Growth inhibition of human DMS114 cells
human MKN74 cells	Growth inhibition assay			Growth inhibition of human MKN74 cells
human SNB78 cells	Growth inhibition assay			Growth inhibition of human SNB78 cells
human St-4 cells	Growth inhibition assay			Growth inhibition of human St-4 cells
human DU145 cells	Growth inhibition assay			Growth inhibition of human DU145 cells
human LOXIMVI cells	Growth inhibition assay			Growth inhibition of human LOXIMVI cells
human PC3 cells	Growth inhibition assay			Growth inhibition of human PC3 cells
human LOXIMVI cells	Growth inhibition assay			Growth inhibition of human LOXIMVI cells
human OVCAR3 cells	Growth inhibition assay			Growth inhibition of human OVCAR3 cells
human SKOV3 cells	Growth inhibition assay			Growth inhibition of human SKOV3 cells
human KM12 cells	Growth inhibition assay			Growth inhibition of human KM12 cells
human HT-29 cells	Growth inhibition assay			Growth inhibition of human HT-29 cells
human HCT15 cells	Growth inhibition assay			Growth inhibition of human HCT15 cells
human NCI-H226 cells	Growth inhibition assay			Growth inhibition of human NCI-H226 cells
human NCI-H522 cells	Growth inhibition assay			Growth inhibition of human NCI-H522 cells
human A549 cells	Growth inhibition assay			Growth inhibition of human A549 cells
human HCC2998 cells	Growth inhibition assay			Growth inhibition of human HCC2998 cells
human SNB75 cells	Growth inhibition assay			Growth inhibition of human SNB75 cells
human OVCAR4 cells	Growth inhibition assay			Growth inhibition of human OVCAR4 cells
human OVCAR5 cells	Growth inhibition assay			Growth inhibition of human OVCAR5 cells
human OVCAR8 cells	Growth inhibition assay			Growth inhibition of human OVCAR8 cells
human SKOV3 cells	Growth inhibition assay			Growth inhibition of human SKOV3 cells
human ACHN cells	Growth inhibition assay			Growth inhibition of human ACHN cells
Click to View More Cell Line Experimental Data

Chemical Information, Storage & Stability

Molecular Weight	417.41	Formula	C₁₉H₂₁F₂N₇O₂	Storage (From the date of receipt)	3 years-20°Cpowder
CAS No.	475110-96-4	Download SDF		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	N/A			Smiles	C1COCCN1C2=NC(=NC(=N2)N3C4=CC=CC=C4N=C3C(F)F)N5CCOCC5

Solubility

In vitro
Batch:

DMSO : 15 mg/mL (35.93 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Water : Insoluble

Ethanol : Insoluble

Molarity Calculator

Mass	Concentration	Volume	Molecular Weight
=	×	×

Dilution Calculator Molecular Weight Calculator

In vivo Batch:
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	0.5% hydroxyethyl cellulose Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	10.000mg/ml (23.96mM)	Taking the 1 mL working solution as an example, take 10 mg of this product, add it to 1 ml of 0.5% hydroxyethyl cellulose clear solution, and mix evenly to form a uniform suspension. The mixed solution should be used immediately for optimal results.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.

In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)

Dosage: mg/kg Average weight of animals: g Dosing volume per animal:μL Number of animals:

Step 2: Enter the in vivo formulation (This is only the calculator, not formulation. Please contact us first if there is no in vivo formulation at the solubility Section.)

% DMSO + % + % Tween 80 + % ddH₂O

%DMSO+ %

Calculation results:

Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )

Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH₂O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such as vortex, ultrasound or hot water bath can be used to aid dissolving.

Mechanism of Action

Features	First orally administered PI3K inhibitor used in vivo.
Targets/IC₅₀/Ki	PI3Kδ (Cell-free assay) 4.6 nM PI3Kα (Cell-free assay) 16 nM PI3K (Cell-free assay) 37 nM PI3Kβ (Cell-free assay) 44 nM PI3Kγ (Cell-free assay) 49 nM
In vitro	ZSTK474 at 1 μM potently reduces PI3K activity to 4.7% of the control level, whereas LY2194002 only reduces the activity to 44.6% of the control. This compound inhibits the activities of recombinant p110β, -γ, and -δ with IC50 of 17 nM, 53 nM, and 6 nM, respectively. It shows potent antiproliferative activity against a panel of 39 human cancer cell lines with mean GI50 of 0.32 μM, more effectively than that of LY294002 or wortmannin with mean GI50 of 7.4 μM or 10 μM, respectively. This chemical treatment at 1 μM blocks membrane ruffling and generation of PIP3 induced by platelet-derived growth factor in murine embryonic fibroblasts (MEFs). It at 10 μM induces apoptosis in OVCAR3 cells, and induces complete G1-phase arrest but not apoptosis in A549 cells. This compound treatment at 0.5 μM significantly decreases the level of phosphorylated Akt and GSK-3β, as well as the cyclin D1 protein expression. It also inhibits the phosphorylation of other downstream signalling components that are involved in regulating cell proliferation including FKHRL1, FKHR, TSC-2, mTOR, and p70S6K in a dose-dependent manner. This chemical does not inhibit mTOR at 0.1 μM, and even at a concentration of 100 μM, it inhibits mTOR activity less than 40%. It blocks VEGF-induced cell migration and the tube formation in human umbilical vein endothelial cells (HUVECs), and inhibits the expression of HIF-1α and secretion of VEGF in RXF-631L cells, exhibiting potent in vitro antiangiogenic activity. This compound treatment inhibits the production of IFNγ and IL-17 in concanavalin A-activated T cells, and inhibits the proliferation and PGE(2) production by fibroblast-like synovial cells (FLS).
Kinase Assay	Inhibition of PI3K activity
Kinase Assay	A549 cells are lysed in a buffer containing 20 mM Tris-HCl (pH 7.5), 150 mM NaCl, 5 mM EDTA, and 1% Igepal CA-630, the lysates are centrifuged at 20,000 g and 4 °C for 10 minutes, and the supernatants are used as cell lysate (protein = 2-4 mg/mL). To immunoprecipitate PI3K, 200 μL of cell lysate are incubated with anti-p85 polyclonal antibody and protein G-agarose (5 μL). PI3Kα, PI3Kβ, and PI3Kδ can be immunoprecipitated by the anti-p85 polyclonal antibody. Agarose beads containing immunoprecipitates are washed twice with buffer A (20 mM Tris-HCl at pH 7.5, 150 mM NaCl, 5 mM EDTA, and 1% Igepal CA-630), once with buffer B (500 mM LiCl and 100 mM Tris-HCl at pH 7.5), once with distilled water, and once with buffer C (100 mM NaCl and 20 mM Tris-HCl at pH 7.5). Immunoprecipitates are suspended in 20 μL of buffer C containing phosphatidylinositol of 200 μg/mL. The mixture is preincubated with increasing concentrations of this compound at 25 °C for 5 minutes. [γ-³²P]ATP (2 μCi per assay mixture; final concentration, 20 μM) and MgCl₂ (final concentration, 20 mM) are added to start the reaction. The reaction mixture is incubated at 25 °C for 20 minutes. Phosphorylated products of phosphatidylinositol are separated by thin-layer chromatography and visualized by autoradiography. The phosphatidylinositol-3-phosphate region is scraped from the plate, and radioactivity is also measured with liquid scintillation spectroscopy. The level of inhibition for this chemical is determined as the percentage of ³²P counts per minute obtained without this compound.
In vivo	Oral administration of ZSTK474 inhibits the growth of subcutaneously implanted mouse B16F10 melanoma tumours in a dose-dependent manner, producing tumour regression of 28.5%, 7.1%, or 4.9% on day 14 at 100, 200, or 400 mg/kg, respectively, which is superior to that of the four major anticancer drugs at their respective maximum tolerable doses with tumour regression of 96%, 35.7%, 24%, or 68.3%, respectively. This compound treatment at 400 mg/kg completely inhibits the growth of A549, PC-3, and WiDr xenografts in mice, and induces the regression of A549 xenograft tumours. It significantly inhibits tumour growth in the RXF-631L xenograft model, correlated with a significantly reduced number of microvessels in the treated mice. Oral administration of this chemical ameliorates the progression of adjuvant-induced arthritis (AIA) in rats.
References	[1] https://pubmed.ncbi.nlm.nih.gov/16622124/ [2] https://pubmed.ncbi.nlm.nih.gov/17711503/ [3] https://pubmed.ncbi.nlm.nih.gov/19144509/ [4] https://pubmed.ncbi.nlm.nih.gov/19372588/ [5] https://pubmed.ncbi.nlm.nih.gov/22039466/ [6] https://pubmed.ncbi.nlm.nih.gov/22349137/

Applications

Methods	Biomarkers	Images	PMID
Western blot	p-PDK1 / p-GSK3β / p-AKT / AKT P-gp / MRP1 p-Rb / p27 / Cyclin D1 HIF-1α / HIF-1β		28388564
Growth inhibition assay	Cell viability		28388564

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ZSTK474 PI3K inhibitor

Chemical Structure

Molecular Weight: 417.41