Modified Gellan Gum hydrogels with tunable physical and mechanical properties
Daniela F Coutinho1, Shilpa V Sant, Hyeongho Shin
13B's Research Group, Biomaterials, Biodegradables and Biomimetics, Dept. of Polymer Engineering, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Taipas, 4806-909 Guimarães, Portugal.
Biomaterials
|July 29, 2010
Summary
This study introduces methacrylated Gellan Gum (MeGG) hydrogels for tissue engineering. These novel MeGG hydrogels offer tunable mechanical properties and improved stability in physiological conditions, enhancing their applicability.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Polymer Chemistry
Background:
- Gellan Gum (GG) hydrogels are explored for tissue engineering.
- Physical crosslinking methods for GG hydrogels lack stability in physiological conditions.
- This limitation necessitates the development of more robust hydrogel systems.
Purpose of the Study:
- To develop a new class of Gellan Gum hydrogels with combined physical and chemical crosslinking.
- To create methacrylated Gellan Gum (MeGG) hydrogels with tunable properties.
- To assess the mechanical properties, degradation, and biocompatibility of MeGG hydrogels.
Main Methods:
- Chemical modification of Gellan Gum by incorporating methacrylate groups to form MeGG.
- Characterization of MeGG using proton nuclear magnetic resonance (1H NMR) and FTIR-ATR.
- Evaluation of hydrogel mechanical properties, swelling kinetics, degradation rates, and in vitro cell viability.
Main Results:
- MeGG hydrogels exhibited tunable Young's modulus values ranging from 0.15 to 148 kPa.
- Swelling kinetics and hydrolytic degradation rates were dependent on the crosslinking mechanisms.
- In vitro studies confirmed high cell survival of NIH-3T3 fibroblast cells encapsulated in MeGG networks.
Conclusions:
- Methacrylated Gellan Gum (MeGG) hydrogels offer a promising platform for tissue engineering.
- The dual crosslinking mechanism provides tunable mechanical and degradation properties.
- MeGG hydrogels demonstrate excellent in vitro biocompatibility, supporting cell survival for various tissue engineering applications.
