vegfr2/flk1

Sorafenib tosylate (Bay 43-9006) is a potent multikinase inhibitor (IC50s: 6/20/22 nM for Raf-1/VEGFR-3/B-Raf).

Motesanib Diphosphate (AMG 706) is the orally bioavailable diphosphate salt of a multiple-receptor tyrosine kinase inhibitor with potential antineoplastic activity.

(Z)-Semaxinib (SU5416) is a potent and selective VEGFR(Flk-1/KDR) inhibitor (IC50: 1.23 μM), 20-fold more selective for VEGFR over PDGFRβ, no inhibition for FGFR, InsR, and EGFR. (Z)-Semaxinib is a quinolone derivative with potential antineoplastic activity.

Vatalanib dihydrochloride (PTK787 dihydrochloride)(IC50=37 nM) is an inhibitor of VEGFR2/KDR. It exhibits less effective against VEGFR1/Flt-1 and 18-fold against VEGFR3/Flt-4.

Axitinib (AG-013736) is a multi-targeted tyrosine kinase inhibitor that inhibits VEGFR1, VEGFR2, VEGFR3, and PDGFRβ (IC50=4/20/0.4/2 nM). Axitinib has antitumor activity and is used in the treatment of renal cell carcinoma.

BMS-605541 is a potent and selective inhibitor of vascular endothelial growth factor receptor-2 (VEGFR-2) kinase activity(Ki=49 nM).

Tyrphostin AG1433 (AG1433) is an inhibitor of tyrosine kinases and also a dual inhibitor of PDGFRβ(IC50s = 5.0 μM) and VEGFR-2 (Flk-1/KDR)(IC50s = 9.3 μM).

Brivanib Alaninate (BMS-582664) is the alaninate salt of a vascular endothelial growth factor receptor 2 (VEGFR2) inhibitor with potential antineoplastic activity. Brivanib strongly binds to and inhibits VEGFR2, a tyrosine kinase receptor expressed almost exclusively on vascular endothelial cells; inhibition of VEGFR2 may result in inhibition of tumor angiogenesis, inhibition of tumor cell growth, and tumor regression.

Vascular endothelial growth factor receptor 2 (VEGFR2, also known as KDR and FLK1) is a receptor tyrosine kinase that regulates angiogenesis, vascular development, and embryonic hematopoiesis in response to VEGF isoforms A, C, and D. VEGFR2 kinase inhibitor II is a reversible, cell-permeable inhibitor of VEGFR2's kinase activity (IC50 = 70 nM). It less potently inhibits the platelet-derived growth factor receptor β (PDGFRβ; IC50 = 920 nM) and related receptor and non-receptor tyrosine kinases. VEGFR2 kinase inhibitor II blocks the growth of human umbilical vein endothelial cells stimulated with either VEGF or PDGF (IC50s = 110 nM and 2 μM, respectively).

Su1498 (Tyrphostin SU 1498) is a selective inhibitor of the receptor tyrosine kinase VEGF receptor 2 (VEGFR2, aka FLK1; IC50 = 700 nM), having negligible activity at several other serine/threonine and tyrosine kinases.1, 2 It effectively blocks signaling through VEGFR2 both in vitro and in vivo.1, 3 SU 1498 is used to study the role of VEGFR2 signaling in diverse processes, including angiogenesis, tumor growth, neural progenitor cell survival, and neuroregeneration.

Brivanib (BMS-540215) is an ATP-competitive inhibitor targeting VEGFR2 with an IC50 of 25 nM, exhibiting moderate potency against VEGFR-1 and FGFR-1, and over 240-fold selectivity against PDGFR-β. Phase 3.

CHIR-124 is an effective Chk1 inhibitor (IC50: 0.3 nM). It has 2, 000-fold selectivity against Chk2, 500- to 5, 000-fold less activity against Cdc2 and CDK2/4.