The turn-on fluorescence response of H2S in RAECs was tested using 7-Azido-4-Methylcoumarin, (C-7Az, Sigma), which has been proved to selectively respond to H2S. RAECs were incubated with 50 μM C-7Az PBS for 30 min, followed by washing of the cells with PBS. Visualization of the turn-on fluorescence response of C-7Az to H2S in RAECs was carried out using fluorescence microscopy with the excitation of a 720 nm laser. These results confirmed that excitation fluorescence imaging could be used to detect H2S through the triggered fluorescence response of C-7Az.
Do you have any questions about this protocol?
Post your question to gather feedback from the community. We will also invite the authors of this article to respond.