Multifunctional Scaffolds for Assembling Cancer-Targeting Immune Stimulators Using Chemoselective Ligations

Area of Science:

• Chemical Biology
• Biomedical Applications
• Peptide Synthesis

Background:

• Chemoselective ligations are crucial for functionalizing proteins and peptides.
• Existing methods have limitations and are rarely combined.
• Solid-phase peptide synthesis aids in creating modified peptides and proteins.

Purpose of the Study:

• To develop a modular synthesis of branched peptide and polymer constructs.
• To create cancer-targeting immune system engagers (ISErs).
• To functionalize ISErs for detection in biological systems.

Main Methods:

• Application of copper-catalyzed azide-alkyne click ligation.
• Utilized oxime, maleimide, and native chemical ligations.
• Developed a modular synthesis strategy for branched constructs.

Main Results:

• Successfully synthesized branched peptide and polymer constructs acting as ISErs.
• Functionalized ISErs for detection in biological systems.
• Identified advantages and potential pitfalls of combined ligation strategies.

Conclusions:

• Modular synthesis using multiple chemoselective ligations is effective for creating ISErs.
• This approach facilitates optimization of ISEr activity and mechanism.
• The strategy holds promise for developing novel cancer immunotherapies.