kobe2602

Biological Activity

kobe2602 is a novel and effective small-molecule compound inhibiting Ras–Raf interaction by SBDD; exhibits potent activity to competitively inhibit the binding of H-Ras·GTP to c-Raf-1 RBD with a Ki value of 149 ± 55 μM.IC50 value: 149 ± 55 uM (Ki) [1]Target: Ras-Raf These two compounds(Kobe0065 and Kobe2602), added to the culture medium at 2 and 20 μM, effectively reduced the amount of c-Raf-1 associated with H-Ras G12V in NIH 3T3 cells in a dose-dependent manner, indicating the inhibition of the cellular activity of Ras. A rough estimate of the IC50 value for the cellular Ras–Raf-binding inhibition was around 10 μM (Fig. 1B), which was not much different from the Ki values for the in vitro Ras–Raf-binding inhibition considering thequite low cellular concentration of Raf. A similar inhibitory effect was also observed with NIH 3T3 cells overexpressing K-Ras G12V. Both Kobe0065 and Kobe2602 at 20 μM efficiently inhibited the phosphorylation of MEK and ERK, downstream kinases of Raf in NIH 3T3 cells transiently expressingH-Ras G12V, although the effect was slightly weaker than that of2 μM sorafenib.

Published experimental findings depend on the model and assay conditions. They do not guarantee equivalent performance in every application. For laboratory research use only.