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Direct monitoring of the interaction between ROS and cerium dioxide nanoparticles in living cells

机译:直接监测活性细胞中ROS与二氧化铈纳米颗粒之间的相互作用

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摘要

A method for the direct monitoring of the interaction of reactive oxygen species (ROS) with cerium dioxide nanoparticles (CDN) in living cells is proposed based on the use of a complex of calcein and CDN. The CDN-calcein complex penetrates easily into a living cell and is decomposed readily by endogenous or exogenous ROS, releasing brightly fluorescent calcein, which can be observed using conventional fluorescent microscopy. This complex is less cytotoxic than individual cerium dioxide nanoparticles and provides effective protection from oxidative stress induced by the action of hydrogen peroxide, treatment with latex beads, or infection by the vesicular stomatitis virus.
机译:基于钙黄绿素和CDN的复合物,提出了一种直接监测活细胞中活性氧(ROS)与二氧化铈纳米颗粒(CDN)相互作用的方法。 CDN-钙黄绿素复合物容易渗透到活细胞中,并容易被内源性或外源性ROS分解,释放出明亮的荧光钙黄绿素,可以使用常规荧光显微镜观察到。该复合物比单个二氧化铈纳米粒子的细胞毒性要小,并且可以有效保护免受过氧化氢,乳胶珠治疗或水疱性口炎病毒感染引起的氧化应激。

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