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Medicinal Plants 2022

Lisbon, Portugal

Traditional Medicine-2022

Singapore City, Singapore
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Plumbagin induces apoptosis in Her2 overexpressing breast cancer cells through the mitochondrial-mediated pathway

Author(s): Kawiak A, Zawacka-Pankau J, Lojkowska E


Breast cancer is the leading cause of death-related cancers in women. Approximately 30% of breast cancers overexpress the Her2 oncogene, which is associated with a poor prognosis and increased resistance to chemotherapy. Plumbagin (1), a constituent of species in the plant genera Drosera and Plumbago, displays antineoplastic activity toward various cancers. The present study was aimed at determining the anticancer potential of 1 toward Her2-overexpressing breast cancer cells and defining the mode of cell death induced in these cells. The results showed that 1 exhibited high antiproliferative activity toward the Her2-overexpressing cell lines SKBR3 and BT474. The antiproliferative activity of 1 was associated with apoptosis-mediated cell death, as revealed by caspase activation and an increase in the sub-G1 fraction of the cell cycle. Compound 1 increased the levels of the proapoptotic Bcl-2 family of proteins and decreased the level of the antiapoptotic Bcl-2 protein in SKBR3 and BT474 cells. Thus, these findings indicate that 1 induces apoptosis in Her2-overexpressing breast cancers through the mitochondrial-mediated pathway and suggest its potential for further investigation for the treatment of Her2-overexpressing breast cancer.

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