在UVB暴露期间,在人类角质细胞的线粒体中产生自由基的量子感应
Siyu Fan1, Lluna Lopez Llorens1, Felipe P Perona Martinez1
1Department of Biomaterials & Biomedical Technology, University Medical Center Groningen, University Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands.
ACS sensors
|May 14, 2024
概括
紫外线 (UV) 辐射会导致皮肤损伤. 研究人员使用光纳米钻石在17分钟内检测线粒体上有害的自由基的增加,揭示了实时的细胞反应.
科学领域:
- 生物物理学的生物物理.
- 细胞生物学 细胞生物学
- 量子传感器是一种量子传感器.
背景情况:
- 紫外线 (UV) 辐射,特别是UVB,诱导细胞损伤,包括线粒体功能障碍,氧化应激和DNA损伤.
- 自由基在这些UVB诱导的细胞反应中起着关键作用,但由于它们的短暂性质,很难量化.
研究的目的:
- 开发和应用一种新的量子传感技术,用于实时监测暴露于UVB辐射的细胞中的自由基.
- 调查紫外线B辐射暴露后线粒体附近自由基生成的空间和时间动态.
主要方法:
- 使用光纳米钻石 (FND) 作为量子传感器的T1放松计来检测暗示自由基的磁噪声.
- 功能化的FNDs与抗VDAC2抗体专门针对和感知线粒体膜中的激素.
主要成果:
- 证明了抗VDAC2涂层FNDs实时监测自由基存在的能力.
- 观察到17分钟内线粒体膜上自由基水平的动态增加UVB (3J/cm2) 暴露.
结论:
- 使用有针对性的FND进行量子传感,为实时评估线粒体水平上UVB诱导的氧化应激提供了强大的工具.
- 紫外线暴露迅速提高线粒体膜上的自由基度,导致细胞损伤.
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