Mitochondrial Mediated Apoptosis Evaluation of Myristicin on Triple Negative Breast Cancer Model Via Bcl2/Bid Pathway

ABSTRACT

Among 15‐20 cases of breast cancer, triple‐negative breast cancer (TNBC) is the deadliest form of the disease. The most effective form of treatment for this type of cancer is still targeted chemotherapy because it lacks hormone receptors. Myristicin, an active aromatic compound with anticancer properties, is mostly found in nutmeg. Antitumor, antioxidant, and antimicrobial activity are among few of the numerous properties of myristicin. On TNBC cells, the exact modes of action are mostly unidentified. This study shows that myristicin triggered the mitochondria‐mediated apoptosis in MDA‐MB‐231 cells. The MTT assay assessed the anti‐proliferative potential of myristicin on TNBC cells (IC ₅₀ 0.65 mM ± 0.98). Flow cytometry analysis was used to evaluate the myristicin's effects on cell apoptosis using annexin V/PI (46.4 ± 2.31%). After evaluating the protein expression, myristicin significantly decreased the expression of Bcl2 and HSP60 while enhancing the expression of proteins such as caspase 9, caspase 3, bid, bad, caspase 7, P53, cytochrome c, and SDHA. Furthermore, our research confirmed that myristicin has a lower toxicological profile and greater in vivo therapeutic efficacy. In BALB/c mice, 4T1 cells were injected subcutaneously to develop breast tumors, and the mice subsequently received myristicin. According to in vivo results, myristicin treatment reduced tumor weight and volume when compared to the breast cancer control group. Besides, the enzyme analysis, gene, and protein expression showed significant apoptotic properties on myristicin treated group. According to these results, myristicin may be used as a therapeutic approach for the management of TNBC.