flk-1

SU5205 is a VEGFR2 inhibitor.

SU5214 is a modulator of tyrosine kinase signal transduction.

Semaxinib (SU5416) is a potent and selective VEGFR2 inhibitor (IC50: 1.23 μM), exhibiting a 20-fold greater selectivity for VEGFR2 over PDGFRβ, with no activity against InsR, EGFR, and FGFR. Semaxinib reversibly inhibits ATP binding to the tyrosine kinase domain of VEGFR2, potentially inhibiting VEGF-stimulated endothelial cell migration and proliferation, thereby reducing tumor microvasculature.

Orantinib (NSC 702827) , a excellent effective against PDGFR autophosphorylation with Ki of 8 nM, also highly inhibits Flk-1 and FGFR1 trans-phosphorylation. It shows little effect against IGF-1R, Met, Src, Lck, Zap70, Abl and CDK2 and does not suppresses EGFR.

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.

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.

Toceranib Phosphate (SU11654 phosphate), is a selective inhibitor of the tyrosine kinase activity of several members of the split kinase RTK family, including Flk-1 KDR, PDGFR

SU11652 is a potent cell-permeable pyrrole-indolinone compound. SU11652 acts as an ATP-competitive tyrosine kinase receptor and angiogenic inhibitor with greater selectivity for PDGFR-β (PDGFRβ, IC50 = 3 nM), Flk-1 (VEGFR2, IC50 = 27 nM), FGFR1 (IC50= 170

(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.

Toceranib (PHA 291639E) phosphate is an orally active inhibitor of tyrosine kinase (RTK) receptor, and it potently inhibits PDGFR, VEGFR, and Kit(with Kis of 5 and 6 nM for PDGFRβ and Flk-1 KDR, respectively), has antitumor and antiangiogenic activity.

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).

YD-3 is a PAR4 antagonist that significantly inhibits thrombin-induced platelet aggregation in rabbits (IC(50)=28.3 microM). In addition, YD-3 suppresses thrombin-induced proliferation of vascular smooth muscle cells (VSMCs) and reduces neointimal thickening after balloon injury. Through Ras- and ERK1 2-mediated signaling pathways, YD-3 impedes thrombin-driven VSMC proliferation. When analyzed with Western blot, YD-3 primarily inhibits thrombin-induced expression of vascular endothelial growth factor receptor 2 (Flk-1) without affecting extracellular signal-regulated kinase 1 2 phosphorylation. YD-3 could potentially have value in elucidating the pathophysiology of thrombin-induced angiogenesis.

SU5204 (3-[(2-Ethoxyphenyl)methylidene]-1H-indol-2-one), an analogue of SU5025, pharmacologically inhibits VEGFR2(IC50s of 4 and 51.5 μM for FLK-1 (VEGFR-2) and HER2)

AG1433 is a tyrosine kinases inhibitor that acts as a direct and selective inhibitor of photosynthetic PEP carboxylase and an inhibitor of PDGFR-β, Flk-1, and angiogenesis.

PKC412(Midostaurin (PKC412); CGP41231; CGP41251) is a broad spectrum protein kinase inhibitor. Midostaurin inhibits protein kinase C alpha (PKCalpha), vascular endothelial growth factor receptor 2 (VEGFR2), c-kit, platelet-derived growth factor receptor (PDGFR) and FMS-like tyrosine kinase 3 (FLT3) tyrosine kinases, which may result in disruption of the cell cycle, inhibition of proliferation, apoptosis, and inhibition of angiogenesis in susceptible tumors.

SU-4312, also known as DMBI, is a potent and selective inhibitor of VEGFR and PDGFR tyrosine kinases (IC50 values are 0.8 and 19.4 μM respectively). SU4312 (SU 4312) unexpectedly protects against MPP(+) -induced neurotoxicity via selective and direct inhibition of neuronal NOS.

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.

(Z)-Orantinib ((Z)-SU6668) is a potent, selective, orally active, and ATP-competitive inhibitor of Flk-1/KDR, PDGFRβ, and FGFR1, with IC50 values of 2.1, 0.008, and 1.2 μM, respectively. (Z)-Orantinib is an effective antiangiogenic and antitumor agent that induces established tumor regression [1] [2].