TiO2的热力学和电子磁共振描述器纳米形式与等离子体白蛋白的相互作用:能量参数和纳米材料的毒性之间的相互作用
Daniela Gheorghe1, Aurica Precupas1, Alina Botea-Petcu1
1Institute of Physical Chemistry - Ilie Murgulescu of the Romanian Academy, Splaiul Independentei 202, Bucharest 060021, Romania.
Colloids and surfaces. B, Biointerfaces
|July 23, 2025
概括
二氧化 (TiO2) 纳米材料与蛋白质的相互作用揭示了关键的热力学和电子磁共振 (EPR) 签名. 这些特征预测了纳米材料的反应性和毒性,这对于纳米医学和纳米安全性评估至关重要.
科学领域:
- 纳米技术 纳米技术
- 材料科学 材料科学 材料科学
- 生物物理学的生物物理.
背景情况:
- 蛋白质-纳米材料相互作用对于纳米医学和纳米安全至关重要.
- 了解这些相互作用需要描述纳米材料的特性及其对蛋白质的影响.
研究的目的:
- 调查二氧化 (TiO2) 纳米形式与牛血清白蛋白 (BSA) 相互作用的热力学和电子磁共振 (EPR) 信号.
- 阐明结合机制,并确定影响纳米材料反应性和毒性的因素.
主要方法:
- 电子偏磁共振 (EPR) 光谱检测自由基的产生.
- 在吸附过程中分析蛋白质稳定性和形状变化.
- 生物/纳米界面参数与体外毒理学结果 (细胞活力,增殖,DNA损伤) 的相关性.
主要成果:
- TiO2的纳米形式特性 (大小,晶体结构,表面) 显著影响BSA的结合和稳定性.
- 热力学和EPR参数与蛋白质结构变化和结合亲和关系.
- 纳米材料诱导的蛋白质结构变化预测毒理学影响,包括氧化应激和DNA损伤.
结论:
- 热力学和EPR参数是蛋白质纳米材料结合和毒性的关键描述指标.
- 蛋白质结构稳定性和结合热力学作为纳米材料安全性和有效性的可靠指标.
- 这些发现突显了生物/纳米相互作用参数与纳米材料毒性之间的联系,这对于风险评估至关重要.
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