Issue 32, 2020

A ratiometric fluorescent probe for real-time monitoring of intracellular glutathione fluctuations in response to cisplatin

Abstract

Real-time imaging of fluctuations in intracellular glutathione (GSH) concentrations is critical to understanding the mechanism of GSH-related cisplatin-resistance. Here, we describe a ratiometric fluorescence probe based on a reversible Michael addition reaction of GSH with the vinyl-functionalized boron-dipyrromethene (4,4-difluoro-4-bora-3a,4a-diaza-s-indacene or BODIPY) 1. The probe was applied for real-time monitoring of the fluctuations in GSH levels in cells under cisplatin treatment. Notably, in cellular cisplatin-sensitive A549 cells, GSH concentrations rose until cell death, while in cisplatin-resistant cell lines, GSH levels first rose to the maximum then fell back to the initial concentration without significant apoptosis. These results indicate that different trends in GSH fluctuation can help distinguish cisplatin-resistant from cisplatin-sensitive cells. As such, this study has shown that probe 1 may potentially be used for real-time monitoring of intracellular GSH levels in response to therapeutics.

Graphical abstract: A ratiometric fluorescent probe for real-time monitoring of intracellular glutathione fluctuations in response to cisplatin

Supplementary files

Article information

Article type
Edge Article
Submitted
22 mei 2020
Accepted
28 jul 2020
First published
29 jul 2020
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY-NC license

Chem. Sci., 2020,11, 8495-8501

A ratiometric fluorescent probe for real-time monitoring of intracellular glutathione fluctuations in response to cisplatin

H. Liu, W. Song, S. Zhang, K. S. Chan, Z. Guo and Z. Shen, Chem. Sci., 2020, 11, 8495 DOI: 10.1039/D0SC02889D

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