I-OMe-Tyrphostin AG 538

I-OMe-Tyrphostin AG 538 (I-OMe-AG 538) is a specific inhibitor of IGF-1R (insulin-like growth factor-1 receptor tyrosine kinase). I-OMe-Tyrphostin AG 538 inhibits IGF-1R-mediated signaling and is preferentially cytotoxic to nutrient-deprived PANC1 cells. I-OMe-Tyrphostin AG 538 is an ATP-competitive inhibitor of phosphatidylinositol-5-phosphate 4-kinase α (PI5P4Kα), with an IC50 of 1 µM[1].

I-OMe-Tyrphostin AG 538 (I-OMe-AG 538) (0.1-1000 µM; 24 hours) is cytotoxic to PANC-1 cells in nutrient-deprived medium[1].I-OMe-Tyrphostin AG 538 (0-3 µM; 1 hour) blocks phosphorylation of IGF-1R, Akt and Erk[1].

[1]. Davis MI, et al. A homogeneous, high-throughput assay for phosphatidylinositol 5-phosphate 4-kinase with a novel, rapid substrate preparation. PLoS One. 2013;8(1):e54127.
[2]. Momose I, et al. Inhibitors of insulin-like growth factor-1 receptor tyrosine kinase are preferentially cytotoxic to nutrient-deprived pancreatic cancer cells. Biochem Biophys Res Commun. 2009 Feb 27;380(1):171-6.