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Development of 3D PPF/DEF scaffolds using micro-stereolithography and surface modification.

Phung Xuan Lan1, Jin Woo Lee, Young-Joon Seol

  • 1Department of Mechanical Engineering, Hanoi University of Technology, Hanoi City, Vietnam.

Journal of Materials Science. Materials in Medicine
|September 3, 2008
PubMed
Summary

This study presents a new method for creating 3D porous scaffolds using Poly(propylene fumarate) (PPF) for bone regeneration. Surface modification with biomimetic apatite and RGD peptide enhances cell behavior, showing potential for bone tissue engineering.

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Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Polymer Chemistry

Background:

  • Poly(propylene fumarate) (PPF) is a biodegradable, UV-curable polymer with bone regeneration potential.
  • Surface modification enhances biomaterial properties without altering bulk characteristics.

Purpose of the Study:

  • To design and fabricate 3D porous scaffolds using PPF via micro-stereolithography (MSTL).
  • To investigate the effect of biomimetic apatite and RGD peptide surface coating on scaffold properties and cell behavior for bone tissue engineering.

Main Methods:

  • Fabrication of 3D PPF scaffolds using micro-stereolithography (MSTL).
  • Surface modification with accelerated biomimetic apatite coating and arginine-glycine-aspartic acid (RGD) peptide.
  • Seeding with MC3T3-E1 pre-osteoblasts and evaluation of biologic properties using MTS assay and histologic staining.

Main Results:

  • Successfully fabricated 3D PPF scaffolds with interconnected porous structure (65% porosity).
  • Uniform apatite coating achieved after 24h immersion in 5-fold simulated body fluid (5SBF).
  • Coated scaffolds demonstrated improved biologic properties with MC3T3-E1 cells.

Conclusions:

  • MSTL is an effective method for fabricating 3D PPF scaffolds for tissue engineering.
  • Biomimetic apatite and RGD peptide surface modification enhances the potential of PPF scaffolds for bone tissue engineering applications.