Abstract

A great number of fluorescent probes have been developed for detecting singlet oxygen (1O2), which is considered to be one of the most effective reactive oxygen species (ROS), especially in clinical applications. The commercially available fluorescent probe Singlet Oxygen Sensor Green (SOSG) is widely used due to its reported high selectivity to 1O2. In this study, we carried out systemic experiments to determine the activation of SOSG in the presence of ionizing radiation. The results show that the SOSG probe exhibits a pronounced fluorescence increase as a function of radiation dose delivered by gamma-rays as well as X-rays, in conditions where the formation of singlet oxygen is not expected. Furthermore, scavenger tests indicate that hydroxyl radicals may be involved directly or indirectly in the activation process of SOSG although the exact mechanism remains unknown.

Details

Title
Singlet Oxygen Sensor Green is not a Suitable Probe for 1O2 in the Presence of Ionizing Radiation
Author
Liu Huanhuan 1 ; Carter Philippe J H 2 ; Laan, Adrianus C 2 ; Eelkema Rienk 3 ; Denkova, Antonia G 2 

 Delft University of Technology, Department of Radiation Science and Technology, Delft, The Netherlands (GRID:grid.5292.c) (ISNI:0000 0001 2097 4740); Delft University of Technology, Department of Chemical Engineering, Delft, The Netherlands (GRID:grid.5292.c) (ISNI:0000 0001 2097 4740) 
 Delft University of Technology, Department of Radiation Science and Technology, Delft, The Netherlands (GRID:grid.5292.c) (ISNI:0000 0001 2097 4740) 
 Delft University of Technology, Department of Chemical Engineering, Delft, The Netherlands (GRID:grid.5292.c) (ISNI:0000 0001 2097 4740) 
Publication year
2019
Publication date
2019
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2237860250
Copyright
© The Author(s) 2019. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.