In situ chondrogenic differentiation of human adipose tissue-derived stem cells in a TGF-β1 loaded fibrin-poly(lactide-caprolactone) nanoparticulate complex

Youngmee Jung, Yong Il Chung, Sang Hee Kim, Giyoong Tae, Young Ha Kim, Jong Won Rhie, Sang Heon Kim, Soo Hyun Kim

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

When conducting cartilage tissue engineering with stem cells, it is well known that chemical and physical stimulations are very important for the induction and maintenance of chondrogenesis. In this study, we induced chondrogenic differentiation of human adipose tissue-derived stem cells (hASCs) in situ by effective stimulation via the continuous controlled release of TGF-β1 from a heparin-functionalized nanoparticle-fibrin-poly(lactide-co-caprolactone) (PLCL) complex. PLCL scaffolds were fabricated with 85% porosity and 300-500 μm pore size by a gel-pressing method. Heparin-functionalized nanoparticles were prepared by a solvent-diffusion method, composed of poly(lactide-co-glycolide) (PLGA), Pluronic F-127, and heparin, and then TGF-β1 was loaded to the nanoparticles. A mixture of hASCs, fibrin gels and TGF-β1 loaded nanoparticles was then seeded onto PLCL scaffolds and cultured in vitro, after which they were subcutaneously implanted into nude mice for up to five weeks. The results of in vitro and in vivo studies revealed that chondrogenic differentiation of the hASCs on the complex was induced and sustained by continuous stimulation by TGF-β1 from the heparin-functionalized nanoparticles. In addition, there was no significant difference between the predifferentiation condition prior to incubation in chondrogenic medium and the proliferation condition, which suggests that in situ chondrogenic differentiation of hASCs was induced by the TGF-β1 loaded nanoparticles. Consequently, the hybridization of fibrin and PLCL scaffolds for three-dimensional spatial organization of cells and the effective delivery of TGF-β1 using heparin-functionalized nanoparticles can induce hASCs to differentiate to a chondrogenic lineage and maintain their phenotypes. Crown

Original languageEnglish
Pages (from-to)4657-4664
Number of pages8
JournalBiomaterials
Volume30
Issue number27
DOIs
Publication statusPublished - 2009 Sep
Externally publishedYes

Keywords

  • Chondrogenic differentiation
  • Human adipose tissue-derived stem cells
  • Poly(l-lactide-co-ε-caprolactone) scaffold
  • TGF-β1

ASJC Scopus subject areas

  • Bioengineering
  • Ceramics and Composites
  • Biophysics
  • Biomaterials
  • Mechanics of Materials

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