KRN 633

貨號 Cat. No.: S1557
規格 Size: 5~200mg
品牌 Brand: Selleckchem

Description

KRN 633

Catalog No.S1557

KRN 633 is an ATP-competitive inhibitor of VEGFR1/2/3 with IC50 of 170 nM/160 nM/125 nM, weakly inhibits PDGFR-α/β and c-Kit, does not block the phosphorylation of FGFR-1, EGFR or c-Met in cell.

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Price

Stock

Quantity

10mM/1mLIn DMSO	USD 352	In stock	0 1 2 3 4 5 6 7 8 9 10
5mg	USD 214	In stock	0 1 2 3 4 5 6 7 8 9 10
10mg	USD 403	In stock	0 1 2 3 4 5 6 7 8 9 10
50mg	USD 1222	In stock	0 1 2 3 4 5 6 7 8 9 10
200mg	USD 3112	In stock	0 1 2 3 4 5 6 7 8 9 10

Distributor Tel: +886-2-2827-1197jimmy@new.abscience.com.tw

Biological Activity

Description	KRN 633 is an ATP-competitive inhibitor of VEGFR1/2/3 with IC50 of 170 nM/160 nM/125 nM, weakly inhibits PDGFR-α/β and c-Kit, does not block the phosphorylation of FGFR-1, EGFR or c-Met in cell.
Targets	VEGFR1	VEGFR2	VEGFR3
IC50	170 nM	160 nM	125 nM ^[1]
In vitro	KRN 633, a novel quinazoline urea derivative, strongly inhibits VEGFR1, VEGFR2 and VEGFR3 receptors with IC50 values of 170 nM, 160 nM and 125 nM respectively. It shows lower inhibitory activity towards non-RTKs, such as PDGF receptor (PDGFRα and β, c-Kit, breast tumor kinase, and tunica interna endothelial cell kinase tyrosine kinases (IC50 = 965, 9850, 4330, 9200, and 9900 nM, respectively). KRN 633 potently inhibits ligand VEGF induced phosphorylation of VEGFR2 in HUVECs with an IC50 of 1.16 nM. KRN 633 also inhibits VEGF-dependent, but not bFGF-dependent, phosphorylation of the MAP kinases in endothelial cells, with IC50 values of 3.51 nM and 6.08 nM for ERK1 and ERK2, respectively. KRN633 has also been shown to inhibit the VEGF-driven proliferation of HUVECs with an IC50 of 14.9 nM, but it only suppresses FGF-driven proliferation at 3 μM weakly. ^[1] KRN 633 inhibits hypoxia-induced transcriptional activation of HIF-1α in a concentration-dependent manner with an IC50 of 3.79 μM, through the inhibition of both Akt and ERK phosphorylation signaling pathways. ^[2]
In vivo	Although not cytotoxic to various cancer cells in vitro, KRN633 exhibits excellent antitumor activity in vivo due to its inhibitory effect on tumor vessel formation and vascular permeability. Once-daily administration of KRN633 at 100 mg/kg/d produces significant tumor growth inhibition in A549, LC-6-LCK, HT29, Ls174T, LNCap and Du145 cells while twice-daily administration of KRN633 at 100 mg/kg induces ~90% growth inhibition of HT29 tumors. ^[1] Treatment of mid-pregnancy mice with KRN 633 (300 mg/kg, p.o.) reduces the blood supply to fetal tissues due to diminished vascularization in both placenta and fetal organs and consequently increases the risk of induction of intrauterine growth restriction (IUGR). ^[3]
Features

Protocol(Only for Reference)

Kinase Assay: ^[1]

Cell-Free Kinase Assays	Cell-free kinase assays are done to obtain IC50 values against a variety of recombinant VEGF receptors. KRN633 is tested at concentrations varying from 0.3 nM to 10 μM. All assays are done in quadruplicate with 1 μM ATP.

Cell Assay: ^[1]

Cell lines	A549, Ls174T, DU145, HT29, LNCap and PC-3 cell lines
Concentrations	Dissolved in DMSO, final concentrations 0.01 to 10 μM
Incubation Time	96 hours
Method	Cancer cells are plated in media containig 10% FBS and antibiotics, at densities known to permit exponential growth over the assay period. The cells are cultured for 24 hours before adding KRN633 (0.01 to 10 μM) or just the vehicle (0.1% DMSO in medium) and then grown for a further 96 hours. Cell viability is measured using WST-1 reagent.

Animal Study: ^[1]

Animal Models	A549, Ls174T, HT29, DU145, LNCap, PC-3 cells and LC-6-JCK are established in athymic mice (BALB/cA, Jcl-nu) and athymic rats (F344/N, Jcl-rnu), respectively.
Dosages	20-100 mg/kg
Administration	Gavage once daily
Solubility	0.5% methylcellulose/0.2% Tween 80 10 mg/mL

References

Chemical Information

Download KRN 633 SDF

Molecular Weight (MW)	416.86
Formula	C₂₀H₂₁ClN₄O₄
CAS No.	286370-15-8

Storage	3 years -20â„ƒPowder
Storage	6 months-80â„ƒin DMSO
Syonnyms	N/A

Solubility (25°C) *	In vitro	DMSO	9 mg/mL (21 mM)
		Water	<1 mg/mL (<1 mM)
		Ethanol	<1 mg/mL (<1 mM)
	In vivo	0.5% methylcellulose/0.2% Tween 80	10 mg/mL
* <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.