Glucosamine-Based Supramolecular Nanotubes for Human Mesenchymal Cell Therapy

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Supramolecular Chemistry

Background:

• Developing advanced biomaterials is crucial for effective stem cell therapy.
• Glucosamine derivatives offer potential for creating novel hydrogel scaffolds.
• Supramolecular self-assembly enables the creation of complex nanostructures for biomedical applications.

Purpose of the Study:

• To design and synthesize novel glucosamine-based supramolecular hydrogels for human mesenchymal stem cell (hMSC) therapy.
• To investigate the self-assembly behavior and structural characteristics of these hydrogels.
• To evaluate the biocompatibility and therapeutic potential of the hydrogels in cell culture and wound healing models.

Main Methods:

• Synthesis of amino acid derivatives with d-glucosamine and fluorinated benzyl groups.
• Characterization of hydrogel self-assembly into one-dimensional nanotubular structures at physiological pH.
• Assessment of nanotube non-toxicity and effects on human mesenchymal stem cell (hMSC) proliferation and pluripotency.
• Evaluation of hMSC-seeded hydrogels in a wound healing model by analyzing paracrine factor secretion and gene expression changes.

Main Results:

• A novel glucosamine-based supramolecular hydrogel, pentafluorobenzyl (PFB)-F-Glu, was successfully synthesized.
• PFB-F-Glu self-assembled into one-dimensional nanotubes via synergistic π-π stacking and hydrogen bonding.
• The PFB-F-Glu nanotubes were non-toxic to hMSCs, promoting their proliferation and maintaining pluripotency.
• hMSCs cultured on PFB-F-Glu secreted factors that reduced profibrotic gene expression in fibroblasts, indicating wound healing potential.

Conclusions:

• Chemical design of glucosamine derivatives can yield effective supramolecular biomaterials for stem cell applications.
• PFB-F-Glu nanotubes represent a promising scaffold for enhancing hMSC therapy and regenerative medicine.
• These findings highlight the potential of supramolecular hydrogels in developing advanced wound healing strategies.