Volume 135, Issue 51 e202313612
Zuschrift

Fast Antioxidation Kinetics of Glutathione Intracellularly Monitored by a Dual-Wire Nanosensor

Yu-Ting Jiao

Yu-Ting Jiao

College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072 China

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Yi-Ran Kang

Yi-Ran Kang

College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072 China

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Ming-Yong Wen

Ming-Yong Wen

College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072 China

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Hui-Qian Wu

Hui-Qian Wu

College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072 China

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Prof. Dr. Xin-Wei Zhang

Corresponding Author

Prof. Dr. Xin-Wei Zhang

College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072 China

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Prof. Dr. Wei-Hua Huang

Corresponding Author

Prof. Dr. Wei-Hua Huang

College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072 China

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First published: 01 November 2023

Abstract

The glutathione (GSH) system is one of the most powerful intracellular antioxidant systems for the elimination of reactive oxygen species (ROS) and maintaining cellular redox homeostasis. However, the rapid kinetics information (at the millisecond to the second level) during the dynamic antioxidation process of the GSH system remains unclear. As such, we specifically developed a novel dual-wire nanosensor (DWNS) that can selectively and synchronously measure the levels of GSH and ROS with high temporal resolution, and applied it to monitor the transient ROS generation as well as the rapid antioxidation process of the GSH system in individual cancer cells. These measurements revealed that the glutathione peroxidase (GPx) in the GSH system is rapidly initiated against ROS burst in a sub-second time scale, but the elimination process is short-lived, ending after a few seconds, while some ROS are still present in the cells. This study is expected to open new perspectives for understanding the GSH antioxidant system and studying some redox imbalance-related physiological.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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