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Bioorg Med Chem Lett. 2010 Oct 15;20(20):6145-8. doi: 10.1016/j.bmcl.2010.08.006. Epub 2010 Aug 6.

Methylantcinate A induces tumor specific growth inhibition in oral cancer cells via Bax-mediated mitochondrial apoptotic pathway.

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School of Medical Laboratory and Biotechnology, Chung Shan Medical University, Taichung, Taiwan, ROC.


An ergostane type triterpenoid methylantcinate A (MAA) isolated from the fruiting bodies of Antrodia camphorata inhibited the growth of oral cancer cell lines OEC-M1 and OC-2 in a dose-dependent manner, without cytotoxic to normal oral gingival fibroblast cells. The major mechanism of growth inhibition was apoptosis induction, as shown by flow cytometric analysis of annexin V-FITC and propidium iodide staining, caspase-3 activation and DNA fragmentation. The increased expression of pro-apoptotic Bax, poly-(ADP-ribose) polymerase cleavage, and activated caspase-3 and decreased expression of anti-apoptotic Bcl-2 and Bcl-xL were also observed. These results provide the first evidence that the anti-oral cancer effects of MAA may involve a mechanism through the mitochondrial dependent pathway. Thus, results reported here may offer further impulse to the development of MAA analogues as potential chemotherapeutic targets for oral cancer complications.

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