Srinivasan Manoj Kumar, Namasivayam Nalini
Department of Biochemistry and Biotechnology, Faculty of Science, Annamalai University, Chidambaram, Tamilnadu, India.
J Biomater Sci Polym Ed. 2025 Apr;36(6):796-815. doi: 10.1080/09205063.2024.2429325. Epub 2024 Dec 3.
The study investigates the molecular interactions and biological effects of carvacrol zinc oxide quantum dots (CVC-ZnO QDs) on breast cancer MCF-7 cell lines and mammary cancer models. Molecular docking using AutoDock Vina revealed binding energies of CVC with key proteins in the PI3K/AKT/mTOR pathway, including PI3K, AKT, PTEN, and mTOR. The results showed significant interaction with specific amino acids, indicating a strong binding affinity. studies demonstrated a dose-dependent cytotoxic effect of CVC-ZnO QDs on MCF-7 cells, with an IC of 20.02 µg/mL, while enhancing intracellular reactive oxygen species (ROS) and decreasing mitochondrial membrane potential (MMP), indicative of apoptosis induction. Antioxidant activity, lipid peroxidation, and nuclear morphological changes were assessed, revealing decreased antioxidant status and increased lipid peroxidation in treated cells. , CVC-ZnO QDs modulated the PI3K/AKT/mTOR signaling in DMBA-induced mammary cancer in rats, decreasing p-PI3K, p-AKT, and p-mTOR expression while upregulating PTEN. Immunohistochemistry, qRT-PCR, and Western blot analyses confirmed these molecular alterations. The study concludes that CVC-ZnO QDs exert cytotoxic and pro-apoptotic effects on breast cancer cells by modulating the PI3K/Akt/mTOR pathway and promoting oxidative stress, presenting a potential therapeutic strategy for breast cancer management.
该研究调查了香芹酚氧化锌量子点(CVC-ZnO QDs)对乳腺癌MCF-7细胞系和乳腺癌模型的分子相互作用及生物学效应。使用AutoDock Vina进行的分子对接显示,CVC与PI3K/AKT/mTOR通路中的关键蛋白(包括PI3K、AKT、PTEN和mTOR)具有结合能。结果表明与特定氨基酸有显著相互作用,表明具有很强的结合亲和力。研究证明CVC-ZnO QDs对MCF-7细胞具有剂量依赖性细胞毒性作用,IC为20.02µg/mL,同时增强细胞内活性氧(ROS)并降低线粒体膜电位(MMP),这表明诱导了细胞凋亡。评估了抗氧化活性、脂质过氧化和核形态变化,结果显示处理过的细胞中抗氧化状态降低,脂质过氧化增加。此外,CVC-ZnO QDs调节了二甲基苯并蒽(DMBA)诱导的大鼠乳腺癌中的PI3K/AKT/mTOR信号传导,降低了p-PI3K、p-AKT和p-mTOR的表达,同时上调了PTEN。免疫组织化学、qRT-PCR和蛋白质印迹分析证实了这些分子改变。该研究得出结论,CVC-ZnO QDs通过调节PI3K/Akt/mTOR通路并促进氧化应激,对乳腺癌细胞发挥细胞毒性和促凋亡作用,为乳腺癌治疗提供了一种潜在的治疗策略。