Molecular probe for enzymatic activity with dual output

Area of Science:

• Biochemistry
• Analytical Chemistry
• Molecular Probes

Background:

• Enzymatic activity detection is crucial in various scientific fields.
• Developing sensitive and specific molecular probes is an ongoing challenge.
• Current methods may lack dual-mode detection capabilities for enhanced specificity.

Purpose of the Study:

• To develop a novel molecular probe for detecting enzymatic activity.
• To create a probe with a dual output detection mode.
• To demonstrate the probe's efficacy in detecting a specific bacterial protease.

Main Methods:

• Design and synthesis of a novel molecular probe.
• Utilizing a self-immolative dendritic platform for signal amplification.
• Employing fluorescence and UV-vis spectroscopy for reporter detection.
• Testing the probe's response to penicillin-G-amidase activity.

Main Results:

• The developed molecular probe successfully detected the bacterial protease penicillin-G-amidase.
• Enzymatic cleavage initiated the fragmentation of the probe's platform.
• Two distinct reporter units were released and detected.
• Dual spectroscopic detection (fluorescence and UV-vis) was achieved.

Conclusions:

• A novel molecular probe with dual output detection has been successfully developed.
• This probe enables sensitive detection of enzymatic activity through two independent spectroscopic methods.
• This represents the first reported molecular probe utilizing two different chromogenic reporters activated by a single enzymatic stimulus.