Tie2 Inhibitor 7 blocks Tie2 kinase activity with a Ki value of 1.3 μM.. It has been shown to inhibit angiopoietin 1-induced Tie2 autophosphorylation and downstream signaling with an IC50 value of 0.3 μM. This compound can prevent endothelial cell tube formation and aberrant vessel growth in a rat model of Matrigel-induced choroidal neovascularization.
(S)-Cdc7-IN-18, a potent CDC7 inhibitor, effectively impedes the overactivation of MCM2, a crucial tumor cell marker, induced by huCdc7 overexpression. Consequently, it inhibits the aberrant proliferation of tumor cells. This compound, exhibits promise for cancer disease research [1].
RO5068760 , a substituted hydantoin, is a potent, highly selective, non-adenosine triphosphate (ATP)-competitive MEK1/2 inhibitors. RO5068760 shows significant efficacy in a broad spectrum of tumors with aberrant mitogen-activated protein kinase pathway activation. In vitro, RO5068760 demonstrates MEK1 kinase inhibitory activity with an IC50 of 0.025 μM in a cRaf/MEK/ERK cascade assay RO5068760 showed superior efficacy in tumors harboring B-RafV600E mutation.
RO4927350 is a potent and highly selective non-ATP-competitive MEK1/2 inhibitor. RO4927350 selectively blocks the MAPK pathway signaling both in vitro and in vivo, which results in significant antitumor efficacy in a broad spectrum of tumor models. RO4927350 inhibits not only ERK1/2 but also MEK1/2 phosphorylation. In cancer cells, high basal levels of phospho-MEK1/2 rather than phospho-ERK1/2 seem to correlate with greater sensitivity to RO4927350. Furthermore, RO4927350 prevents a feedback increase in MEK phosphorylation, which has been observed with other MEK inhibitors. RO4927350 represents a novel therapeutic modality in cancers with aberrant MAPK pathway activation.
4SC-207 is a novel microtubule inhibitor , which shows strong anti-proliferative activity in a large panel of tumor cell lines with an average GI50 of 11 nM. In particular, 4SC-207 is active in multi-drug resistant cell lines, such as HCT-15 and ACHN, suggesting that it is a poor substrate for drug efflux pumps. 4SC-207 inhibits microtubule growth in vitro and in vivo and promotes, in a dose dependent manner, a mitotic delay/arrest, followed by apoptosis or aberrant divisions due to chromosome alignment defects and formation of multi-polar spindles. Furthermore, preliminary data from preclinical studies suggest low propensity towards bone marrow toxicities at concentrations that inhibit tumor growth in paclitaxel-resistant xenograft models. 4SC-207 may be a potential anti-cancer agent.