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- W4387046368 abstract "Trastuzumab (TRZ) is a novel targeted anti-tumor agent that significantly improve the survival of patients with human epidermal growth factor receptor (HER2) positive breast cancer. However, its clinical application is limited due to the side effects of cardiotoxicity. Osthol (OST), a coumarin derivative isolated from Cnidium monnieri (L.) Cusson, has previously demonstrated cardioprotective effects. The aim of this study was to observe the protective effect of OST on TRZ-induced cardiomyocytes damage and to explore its potential mechanism. The results showed that OST pretreatment could significantly inhibit TRZ-induced cardiomyocytes damage, and markedly increase the ratio of LC3II/I and Beclin-1 protein expression, and reduce the protein expression of p62. OST pretreatment significantly attenuated oxidative stress and apoptosis induced by TRZ, as evidenced by reducing intracellular ROS level, Bax/Bcl-2 ratio, and Caspase-3 protein expression. Additionally, OST markedly increased the phosphorylation level of p38MAPK and decreased mTOR phosphorylation level. However, the effects of OST on enhancing autophagy, reducing oxidative stress, apoptosis and the phosphorylation level of mTOR were reversed after the addition of 3-MA or SB203580. Molecular docking results indicated that OST exerted a good binding ability with p38MAPK protein. Our findings suggested that OST could protect TRZ-induced cardiomyocytes damage by enhancing autophagy via the p38MAPK/mTOR signaling pathway." @default.
- W4387046368 created "2023-09-27" @default.
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- W4387046368 date "2023-12-01" @default.
- W4387046368 modified "2023-10-03" @default.
- W4387046368 title "Osthole protects H9c2 cardiomyocytes against trastuzumab-induced damage by enhancing autophagy through the p38MAPK/mTOR signaling pathway" @default.
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- W4387046368 doi "https://doi.org/10.1016/j.tiv.2023.105704" @default.
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