A Bioluminescent Probe for Detecting Norepinephrine in Vivo

Area of Science:

• Biochemistry
• Neuroscience
• Medical Imaging

Background:

• Norepinephrine (NE) is a critical neurotransmitter involved in psychiatric and neurodegenerative diseases.
• Accurate and noninvasive methods for NE detection are needed for disease research and treatment monitoring.

Purpose of the Study:

• To develop a sensitive and selective turn-on bioluminescent probe for real-time norepinephrine detection.
• To enable noninvasive *in vivo* imaging of norepinephrine in living subjects.

Main Methods:

• Development of a norepinephrine bioluminescent probe (NBP) based on p-toluenethiol deprotection via nucleophilic substitution.
• In vitro evaluation of NBP sensitivity and selectivity against various analytes.
• Demonstration of NBP utility for in vivo imaging in living animals.

Main Results:

• The developed NBP demonstrated high sensitivity and selectivity for norepinephrine detection *in vitro*.
• The probe functions as a turn-on system, enhancing signal detection.
• Successful *in vivo* imaging of norepinephrine in living animals was achieved, showcasing real-time, noninvasive visualization.

Conclusions:

• The novel NBP offers a promising tool for real-time, noninvasive monitoring of norepinephrine.
• This probe facilitates the investigation of NE-related diseases and treatment efficacy.
• The NBP strategy holds potential for advancing neuroimaging and diagnostics.