由二维MXene纳米板引起的DNA裂变和损伤
1Faculty of Science and Technology, Beijing Normal-Hong Kong Baptist University, No. 2000 Jintong Road, Zhuhai, Guangdong 519087, China.
ACS applied materials & interfaces
|March 3, 2026
概括
二维MXene纳米片 (Ti3C2Tx) 可以在没有外部能量的情况下分解DNA. 这种DNA分裂活动受到pH等因素的影响,并由NADH增强,引发了环境问题,并提出了生物技术应用.
科学领域:
- 材料科学 材料科学 材料科学
- 生物化学 生物化学
- 环境科学 环境科学
背景情况:
- 二维MXene纳米板 (Ti3C2Tx) 具有独特的特性,适用于各种应用.
- 在体外研究表明MXene纳米片的潜在毒性,但机制尚不清楚.
研究的目的:
- 为了研究MXene纳米片的内在DNA裂变活性.
- 阐明MXene诱导的DNA损伤背后的机制.
- 评估MXene的DNA裂变特性对环境的影响和潜在应用.
主要方法:
- 在不同条件下 (度,时间,温度,pH) 评估了MXene纳米片对超卷化体pBR322的DNA裂变.
- 研究了活性氧物种 (ROS) 和电子转移的作用,特别是与β-尼古丁胺胺氨基二核酸 (NADH) 的作用.
- 基于化参数和反应剂度的量化DNA裂变效率.
主要成果:
- 在没有外部能量输入的情况下,MXene纳米片显示了内在的DNA裂变活性.
- 分裂效率取决于度,时间,温度和pH值,而更高的pH值促进ROS生成.
- 通过促进电子转移到氧气,NADH显著增强了DNA裂变,效率随着MXene和NADH度的增加而增加.
结论:
- MXene纳米片具有固有的DNA裂变能力,受到环境因素和NADH等辅助因素的影响.
- MXene纳米材料的ROS生成和DNA分裂特性在水生环境中构成潜在的风险.
- 这些发现表明MXene在DNA操纵和环境生物技术中的新应用.
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