Designing highly tunable laminin-inspired bioactive peptide hydrogel-based biomaterials for directing cellular...

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Supramolecular Chemistry

Background:

• The extracellular matrix (ECM) is vital for cell signaling and interactions.
• Bioinspired ECM mimics, like supramolecular hydrogels, offer biocompatibility and tunable properties.
• Non-conventional self-assembly strategies enable fabrication of advanced biomaterials.

Purpose of the Study:

• To explore the hydrogelation behavior of a novel laminin-derived peptide sequence (IVVSIVNGR).
• To investigate the potential of these peptide-based hydrogels as cell-instructive scaffolds for tissue engineering.
• To establish a link between peptide concentration, hydrogel morphology, and cellular response.

Main Methods:

• Solvent-mediated self-assembly was used to induce gelation of the IVVSIVNGR peptide.
• Hydrogel properties were tuned by varying peptide concentration, influencing nanofiber morphology and mechanical behavior.
• Biocompatibility and cellular proliferation were assessed using neuronal (SH-SY5Y) and fibroblast (L929) cell lines.

Main Results:

• The IVVSIVNGR peptide successfully formed hydrogels via solvent-mediated self-assembly.
• Increasing peptide concentration led to denser, more entangled nanofiber networks with improved mechanical properties.
• Hydrogels derived from higher peptide concentrations provided superior interfaces for cell adhesion, proliferation, and interaction.

Conclusions:

• This study presents the first report on the hydrogelation and biological applications of the IVVSIVNGR peptide.
• Tunable laminin-inspired hydrogels can be fabricated by controlling peptide concentration and self-assembly.
• These novel biomaterials show significant potential as cell-instructive scaffolds for future tissue engineering applications.