2. Academic Validation
  3. Synergistic effects of laminin-1 peptides, VEGF and FGF9 on salivary gland regeneration

Synergistic effects of laminin-1 peptides, VEGF and FGF9 on salivary gland regeneration

  • Acta Biomater. 2019 Jun:91:186-194. doi: 10.1016/j.actbio.2019.04.049.
Kihoon Nam 1,  Spencer M Dean 1,  Callie T Brown 1,  Randall J Smith Jr 2,  Pedro Lei 3,  Stelios T Andreadis 4,  Olga J Baker 5
Affiliations

Affiliations

  • 1 School of Dentistry, The University of Utah, Salt Lake City, UT 84108, United States.
  • 2 Department of Biomedical Engineering, School of Engineering and Applied Sciences, University at Buffalo, The State University of New York, Buffalo, NY 14203, United States.
  • 3 Department of Chemical and Biological Engineering, School of Engineering and Applied Sciences, University at Buffalo, The State University of New York, Buffalo, NY 14203, United States.
  • 4 Department of Chemical and Biological Engineering, School of Engineering and Applied Sciences, University at Buffalo, The State University of New York, Buffalo, NY 14203, United States; Department of Biomedical Engineering, School of Engineering and Applied Sciences, University at Buffalo, The State University of New York, Buffalo, NY 14203, United States; Center of Bioinformatics and Life Sciences, University at Buffalo, The State University of New York, Buffalo, NY 14203, United States. Electronic address: sandread@buffalo.edu.
  • 5 School of Dentistry, The University of Utah, Salt Lake City, UT 84108, United States. Electronic address: olga.baker@hsc.utah.edu.
PMID: 31028910 DOI: 10.1016/j.actbio.2019.04.049
Abstract

Hyposalivation is associated with radiation therapy, Sjögren's syndrome and/or aging, and is a significant clinical problem that decreases oral health and overall health in many patients and currently lacks effective treatment. Hence, methods to regenerate salivary glands and restore saliva secretion are urgently needed. To this end, this study describes the modification of fibrin hydrogels with a combination of laminin-1 Peptides (YIGSR and A99) and human growth factors (vascular endothelial growth factor and Fibroblast Growth Factor 9) to enhance regeneration in a salivary gland injury mouse model. Our results indicate that these fortified hydrogels enhanced angiogenesis and neurogenesis while promoting formation of acinar structures, thereby leading to enhanced saliva secretion. Such functional recovery indicates salivary gland regeneration and suggests that our technology may be useful in promoting gland regeneration and reversing hyposalivation in a clinical setting. STATEMENT OF SIGNIFICANCE: We engineered Fibrin Hydrogels (FH) to contain multiple regenerative cues including laminin-1 Peptides (L1p) and growth factors (GFs). L1p and GF modified FH were used to induce salivary gland regeneration in a wounded mouse model. Treatment with L1p and GF modified FH promoted salivary epithelial tissue regeneration, vascularization, neurogenesis and healing as compared to L1p-FH or FH alone. Results indicate that L1p and GF modified FH can be used for future therapeutic applications.

Keywords

Biomaterial; Extracellular matrix; Hydrogel; Regeneration; Saliva; Salivary glands; Scaffold; Tissue engineering.

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