Enhanced chondrogenic differentiation of murine embryonic stem cells in hydrogels with glucosamine

Nathaniel S. Hwang, Shyni Varghese, Parnduangjai Theprungsirikul, Adam Canver, Jennifer Elisseeff

Research output: Contribution to journalArticle

Abstract

Differentiation of embryonic stem (ES) cells generally occurs after formation of three-dimensional cell aggregates, known as embryoid bodies (EBs). We have previously reported that hydrogels provide EBs a supportive environment for in vitro chondrogenic differentiation and three dimensional tissue formation [Hwang NS, et al. The Effects of three dimensional culture and growth factors on the chondrogenic differentiation of murine ES cells. Stem Cells 2006;24:284-91]. In this study, we report chondrogenic differentiation of murine ES cells encapsulated in photopolymerizing poly(ethylene-glycol)-based (PEG) hydrogels in the presence of glucosamine (GlcN), an amino monosaccharide found in chitin, glycoproteins and glycosaminoglycans such as hyaluronic acid, chondroitin sulfate and heparin sulfate. We examined the growth and differentiation of encapsulated EBs in standard chondrogenic differentiation medium containing 0-, 2-, and 10-mm GlcN. Morphometric analysis and examination of gene and protein expression indicated that treatment of hydrogel cultures with 2-mm GlcN for 21 days significantly increased EB size, levels of aggrecan mRNA, and tissue-specific extracellular matrix accumulation. GlcN can induce multiple aspects of cell behavior and optimal GlcN concentrations can be beneficial for directing the differentiation and tissue formation of ES cells.

Original languageEnglish (US)
Pages (from-to)6015-6023
Number of pages9
JournalBiomaterials
Volume27
Issue number36
DOIs
StatePublished - Dec 1 2006

Keywords

  • Chondrogenesis
  • Embryonic stem cells
  • Glucosamine
  • Hydrogels
  • Three-dimensional (3-D) culture

ASJC Scopus subject areas

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

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