Hybrid Synthetic-Biological Hydrogel System for Adipose Tissue Regeneration

Shue Li, John Nicholas Poche, Yiming Liu, Thomas Scherr, Jacob McCann, Anoosha Forghani, Mollie Smoak, Mitchell Muir, Lisa Berntsen, Cong Chen, Dino J. Ravnic, Jeffrey Gimble, Daniel J. Hayes

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Hydrogels are promising scaffolds for adipose tissue regeneration. Currently, the incorporation of bioactive molecules in hydrogel system is used, which can increase the cell proliferation rate or improve adipogenic differentiation performance of stromal stem cells but often suffers from high expense or cytotoxicity because of light/thermal curing used for polymerization. In this study, decellularized adipose tissue is incorporated, at varying concentrations, with a thiol-acrylate fraction that is then polymerized to produce hydrogels via a Michael addition reaction. The results reveal that the major component of isolated adipose-derived extracellular matrix (ECM) is Collagen I. Mechanical properties of ECM polyethylene glycol (PEG) are not negatively affected by the incorporation of ECM. Additionally, human adipose-derived stem cells (hASCs) are encapsulated in ECM PEG hydrogel with ECM concentrations varying from 0% to 1%. The results indicate that hASCs maintained the highest viability and proliferation rate in 1% ECM PEG hydrogel with most lipids formation when cultured in adipogenic conditions. Furthermore, more adipose regeneration is observed in 1% ECM group with in vivo study by Day 14 compared to other ECM PEG hydrogels with lower ECM content. Taken together, these findings suggest the ECM PEG hydrogel is a promising substitute for adipose tissue regeneration applications.

Original languageEnglish (US)
Article number1800122
JournalMacromolecular Bioscience
Volume18
Issue number11
DOIs
StatePublished - Nov 2018

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Bioengineering
  • Biomaterials
  • Polymers and Plastics
  • Materials Chemistry

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