Synthesis and in Vitro and in Vivo Antitumor Activity of 2-Phenylpyrroloquinolin-4-ones
作者:Maria Grazia Ferlin、Gianfranco Chiarelotto、Venusia Gasparotto、Lisa Dalla Via、Vincenzo Pezzi、Luisa Barzon、Giorgio Palù、Ignazio Castagliuolo
DOI:10.1021/jm049387x
日期:2005.5.1
In our search for potential new anticancer drugs, we designed and synthesized a series of tricyclic compounds containing the antimitotic 2-phenylazaflavone chromophore fused to a pyrrole ring in a pyrroloquinoline structure. Compounds 8, 18, 19, 22, 23, 25 and 26, when tested against a panel of fourteen human tumor cell lines, showed poor in vitro cytotoxic activity, whereas 20, 21 and 24 showed significant activity (IC50 0.7 to 50 mu M). Steroid hormone-sensitive ovary, liver, breast and adrenal gland adenocarcinoma cell lines displayed the highest sensitivity (IC50 0.7 to 8,mu M). Compound 24 blocked cells in the G(2)/M phase of the cell cycle and induced a significant increase in apoptotis. Compounds 20, 21 and 24 proved to alter microtubule assembly and stability, displaying a cytoplasmic microtubule network similar to that caused by Vincristine. In vivo, administration of compound 24 to Balb/c mice inhibited the growth of a syngenic hepatocellular carcinoma.