An analyte-triggered artificial peroxidase system based on dimanganese complex for a versatile enzyme assay

Area of Science:

• Biochemistry and Analytical Chemistry
• Materials Science and Nanotechnology
• Enzyme Assays and Biosensing

Background:

• Artificial enzymes mimic natural enzyme functions, offering advantages in stability and tunability.
• Peroxidase mimetics are crucial for developing sensitive detection systems.
• Analyte-triggered activation provides specificity and reduces background noise in assays.

Purpose of the Study:

• To develop a novel analyte-activatable artificial peroxidase system.
• To demonstrate the system's versatility in adjustable detection modes (fluorescence, colorimetric).
• To apply the system for versatile enzyme assays, specifically for leucine aminopeptidase and γ-glutamyl transpeptidase.

Main Methods:

• Synthesis and characterization of a caged dimanganese complex (caged Mn₂(bpmp)).
• Demonstration of analyte-triggered peroxidase-like activity.
• Spectrophotometric detection of enzyme activity via substrate oxidation.

Main Results:

• The caged Mn₂(bpmp) system exhibited tunable, analyte-triggered peroxidase-like activity.
• The system successfully functioned in both fluorescence and colorimetric detection modes.
• The artificial peroxidase was effectively applied to quantify leucine aminopeptidase and γ-glutamyl transpeptidase activity.

Conclusions:

• The developed analyte-activatable artificial peroxidase system offers a versatile platform for biosensing.
• This system allows for adaptable detection targets and modes, enhancing assay flexibility.
• It provides a promising tool for enzyme activity detection with potential applications in diagnostics and research.