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KRN 633 286370-15-8
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C20H21ClN4O4 |
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416.86 |
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286370-15-8 |
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98%+ |
Introduction
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.
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. 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.
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. 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.