Herein we describe the development of the first mitochondrial Cl-selective fluorescent probe, Mito-MQAE, and its applications in biological systems. Fluorescence of Mito-MQAE is insensitive to pH over the physiological pH range and is quenched by Cl- with a Stern-Volmer quenching constant of 201 M-1 at pH 7.0. The results of cell studies using Mito-MQAE show that substances with the ability to disrupt mitochondrial membranes cause increases in the mitochondrial Cl- concentration.
Bibliographical noteFunding Information:
This work was supported financially by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT; Grant No. 2020R1A2C3003462).
All Science Journal Classification (ASJC) codes
- Analytical Chemistry