Description
The binding of insulin-
like growth factor 1 (IGF-
1) to the IGF-
1 receptor (IGF-
1R) initiates a cascade of reactions that promote cell growth and transformation by activating the PI3K/Akt signaling pathway, inhibiting apoptotic pathways, and mediating mitogenic actions. Overexpression of IGF-
1R confers tumorigenic potential to cells as well as protection from apoptosis. AG-
1024 is a selective inhibitor of IGF-
1R that inhibits insulin-
stimulated cellular proliferation and IGF-
1R autophosphorylation with IC
50 values of 0.4 and 7 μM, respectively. At 10 nM, AG-
1024 can inhibit proliferation and induce apoptosis in human breast cancer MCF-
7 cells, and it inhibits autocrine growth of human prostate cancer DU145 cells with an IC
50 value of 2.5 μM.
References
[1] párrizas m1, gazit a, levitzki a, wertheimer e, leroith d. specific inhibition of insulin-like growth factor-1 and insulin receptor tyrosine kinase activity and biological function by tyrphostins. endocrinology. 1997 apr;138(4):1427-33.
[2] fan p1, agboke fa1, mcdaniel re1, sweeney ee1, zou x1, creswell k1, jordan vc2.inhibition of c-src blocks oestrogen-induced apoptosis and restores oestrogen-stimulated growth in long-term oestrogen-deprived breast cancer cells. eur j cancer. 2014 jan; 50(2):457-68.