Functional PLGA scaffolds for chondrogenesis of bone-marrow-derived mesenchymal stem cells

Macromol Biosci. 2009 Mar 10;9(3):221-9. doi: 10.1002/mabi.200800187.

Abstract

Two chondrogenic factors, Dex and TGF-beta1, were incorporated into PLGA scaffolds and their chondrogenic potential was evaluated. The Dex-loaded PLGA scaffold was grafted with AA and heparin, the heparin-immobilized one was then reacted with TGF-beta1, yielding a PLGA/Dex-TGF (PLGA/D/T) scaffold. The scaffolds were seeded with rabbit MSCs and cultured for 4 weeks. The results show that the scaffolds including chondrogenic factors strongly upregulated the expression of cartilage-specific genes and clearly displayed type-II collagen immunofluorescence. The functionalized PLGA scaffolds could provide an appropriate niche for chondrogenic differentiation of MSC without a constant medium supply of Dex and TGF-beta1.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Bone Marrow Cells
  • Cartilage
  • Chondrogenesis*
  • Collagen Type II
  • Heparin / chemistry
  • Lactic Acid / chemistry*
  • Mesenchymal Stem Cells / cytology
  • Polyglycolic Acid / chemistry*
  • Polylactic Acid-Polyglycolic Acid Copolymer
  • Rabbits
  • Stromal Cells / cytology*
  • Tissue Engineering / methods
  • Tissue Scaffolds / chemistry*
  • Transforming Growth Factor beta1 / chemistry
  • Up-Regulation / genetics

Substances

  • Collagen Type II
  • Transforming Growth Factor beta1
  • Polylactic Acid-Polyglycolic Acid Copolymer
  • Polyglycolic Acid
  • Lactic Acid
  • Heparin