Stabilizing self-assembled Fmoc-F5-Phe hydrogels by co-assembly with PEG-functionalized monomers

Area of Science:

• Biomaterials science
• Supramolecular chemistry
• Polymer science

Background:

• Self-assembled peptide fibrils form the basis of many advanced hydrogel materials.
• Hydrogels often require enhanced mechanical stability for practical applications.
• Controlling the response of hydrogels to external stimuli like shear is crucial.

Purpose of the Study:

• To investigate methods for stabilizing peptide-based hydrogels against shear stress.
• To explore the co-assembly of peptide fibrils with functionalized polymers.
• To enhance the shear-response of Fmoc-F(5)-Phe derived hydrogels.

Main Methods:

• Utilized self-assembly of Fmoc-F(5)-Phe peptide.
• Incorporated C-terminal PEG-functionalized Fmoc-F(5)-Phe for co-assembly.
• Characterized hydrogel properties, focusing on shear-response and stability.

Main Results:

• Co-assembly with PEG-functionalized Fmoc-F(5)-Phe significantly stabilized the hydrogels.
• Enhanced shear-response was observed in the co-assembled systems.
• The resulting hydrogels demonstrated improved mechanical integrity.

Conclusions:

• Co-assembly is an effective strategy for stabilizing peptide-based hydrogels.
• PEGylation of peptides can impart desirable mechanical properties to hydrogels.
• These findings offer a pathway for developing robust peptide hydrogels.