Design of modular dual enzyme-responsive peptides

Area of Science:

• Biochemistry
• Peptide Chemistry
• Enzyme Assays

Background:

• Enzyme-responsive materials are crucial for targeted drug delivery and diagnostics.
• Developing versatile substrates for detecting multiple enzymes remains a challenge.

Purpose of the Study:

• To design and synthesize novel dual enzyme-responsive peptides.
• To demonstrate the utility of these peptides as substrates for clinically relevant enzymes.

Main Methods:

• Synthesized peptides with lysine residues masked by enzyme-specific substrates.
• Investigated sequential enzymatic cleavage of the masked peptides.
• Utilized colorimetric assays to monitor enzymatic activity.

Main Results:

• Successfully synthesized dual enzyme-responsive peptides.
• Demonstrated sequential unmasking of lysine residues upon enzymatic cleavage.
• Validated the colorimetric detection of enzyme activity through sequential digestion.

Conclusions:

• The modular peptide design allows for broad applicability with various enzyme combinations.
• This approach offers a versatile platform for developing novel diagnostic tools and enzyme sensors.