在MOVAS细胞中,N,Ce-doped碳点对H2O2-诱导的氧化损伤的保护作用
Bo Zhao1,2, Yun Tian1, Muchen Yu1
1Public Research Platform, School of Basic Medicine, Hebei Medical University, Shijiazhuang, Hebei Province, 050017, People's Republic of China.
Applied biochemistry and biotechnology
|January 8, 2026
概括
新型纳米酶,N,Ce-编码的碳点,通过减少细胞死亡来防止大动脉动脉瘤的进展. 这些纳米颗粒清理有害的激素,稳定线粒体,提供了一个有前途的治疗策略.
科学领域:
- 生物材料科学 生物材料科学
- 纳米医学是一种纳米医学.
- 心血管研究研究心血管研究
背景情况:
- 由氧化应激驱动的血管光滑肌细胞 (VSMC) 亡是大动脉动脉瘤 (AA) 发展的关键因素.
- 目前对AA的治疗缺乏针对性的方法来缓解VSMC亡.
研究的目的:
- 开发和评估和编的碳点 (N,Ce-CDs) 作为纳米酶,用于在AA中治疗氧化应激诱导的VSMC亡.
- 研究N,Ce-CDs.的抗氧化和细胞保护机制.
主要方法:
- 合成N,Ce-CDs (~4.8nm) 具有高的 •OH激素清除能力.
- 使用MOVAS细胞进行N,Ce-CDs生物相容性和细胞毒性的体外评估.
- 评估N,Ce-CDs对H2O2诱导的氧化损伤的保护作用,包括ROS清除,脂质过氧化抑制和抗氧化酶活性调节 (GSH,SOD,CAT).
- 评估线粒体膜潜力 (MMP) 恢复和降低亡率.
主要成果:
- N,Ce-CDs表现出极好的生物相容性,对MOVAS细胞没有显著的细胞毒性.
- 这些纳米酶有效地清除了细胞内活性氧物种 (ROS),并抑制了脂质过氧化.
- N,Ce-CDs通过增加谷氨 (GSH) 度和增强超氧化物脱酶 (SOD) 和酶 (CAT) 活动来增强内源性抗氧化能力.
- 用N,Ce-CDs治疗恢复了~60%的线粒体膜潜力 (MMP),并在暴露于H2O2的细胞中显著降低了亡率,从31.97%降至18.52%.
结论:
- N,Ce-CDs作为有效的纳米酶,具有强大的抗氧化和细胞保护性质.
- 这些纳米粒子通过增强抗氧化剂防御和稳定线粒体功能,提供双重作用的治疗策略.
- N,Ce-CDs代表了一种新的纳米治疗方法,用于保护VSMC和治疗大动脉动脉瘤.
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