Identification of a new benzophenanthridine alkaloid from <i>Eomecon chionantha</i> induced necroptosis in breast cancer cells

Benzophenanthridine alkaloids of secondary metabolites from Chinese herb medicine are the excellent anticancer agent to fight sensitive and resistant breast cancer, which is one of the major malignant tumors in females. In the present study, a new benzophenanthridine alkaloid derivatives 8,12-dimethoxysanguinarine (<b>1</b>, SG-A) was isolated from <i>Eomecon chionantha</i>. And MCF-7 cell lines were strongly inhibited by SG-A with an IC₅₀ value of 7.45 μΜ. Furthermore, SG-A strikingly induced non-apoptotic cell death via necroptosis in MCF-7 cells through flow cytometry, Hoechest 33258 and TEM cell morphology analysis. The results suggested that SG-A was found to induce cell necroptosis in MCF-7 cells.