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Author Spotlight: Insights into the Use of Apple-Derived Cellulose Scaffolds for Bone Tissue Engineering
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Zwitterionic Functionalizable Scaffolds with Gyroid Pore Architecture for Tissue Engineering.

Nina Yu Kostina1, Sebastien Blanquer2, Ognen Pop-Georgievski3

  • 1DWI-Leibniz Institute for Interactive Materials and Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Forckenbeckstraße 50, 52074, Aachen, Germany.

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3D printing creates advanced hydrogels using carboxybetaine methacrylamide (CBMAA) and a triblock macromer. These robust, highly porous materials resist protein adsorption and enable specific biofunctionalization for tissue engineering applications.

Keywords:
gyroid pore structurehydrogelsstereolithographyzwitterionic

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Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Polymer Chemistry

Background:

  • Developing advanced hydrogels is crucial for tissue engineering.
  • Existing materials often face challenges with protein adsorption and porosity control.

Purpose of the Study:

  • To fabricate novel hydrogels using stereolithography.
  • To create materials with high porosity, mechanical robustness, and resistance to protein adsorption for tissue engineering.

Main Methods:

  • Stereolithography-assisted fabrication of hydrogels.
  • Copolymerization of carboxybetaine methacrylamide (CBMAA) and a triblock macromer (MA-PDLLA-PEG-PDLLA-MA).
  • Characterization using FTIR, XPS, and LSCM; assessment of equilibrium water content (EWC) and protein adsorption.

Main Results:

  • Fabricated hydrogels with complex, interconnected gyroid porosity and high specific surface area.
  • Achieved high EWC (up to 700%) while maintaining mechanical robustness.
  • Demonstrated excellent resistance to nonspecific protein adsorption and successful specific biofunctionalization with BSA.

Conclusions:

  • The developed hydrogels offer a promising platform for tissue engineering due to their tunable properties.
  • The combination of high porosity, low protein adsorption, and biofunctionalization capacity is ideal for mimicking bone trabecular structures.
  • These materials facilitate nutrient and waste transport, crucial for cell viability in engineered tissues.