Bone morphogenetic protein-derived peptide promotes chondrogenic differentiation of human mesenchymal stem cells

Tissue Eng Part A. 2012 Dec;18(23-24):2581-9. doi: 10.1089/ten.TEA.2011.0400. Epub 2012 Aug 14.

Abstract

Directing chondrogenic differentiation of human mesenchymal stem cells (MSCs) is currently a challenging problem in tissue engineering of cartilage. Short-peptide motifs are promising new tools to aid in controlling chondrogenesis. The aim of this study was to investigate whether a short bone morphogenetic protein-2 (BMP-2)-derived peptide (BMP peptide) stimulates chondrogenesis of human MSCs in the absence of other growth factors. A high-throughput pellet culture system was used to rapidly collect biochemical data such as glycosaminoglycan (GAG), total collagen, and DNA content, as well as alkaline phosphatase (AP) activity. Cells cultured with ≥100 μg/mL of the peptide produced 74% of the GAG content that cells cultured with BMP-2 produced. Comparable levels of GAG production were promoted by the peptide and BMP-2 over 4 weeks of culture. However, histology revealed that the peptide promoted a more homogenous distribution of GAG than BMP-2. The BMP peptide directed human MSCs to increase collagen production after 3 weeks, but at significantly lower levels compared to BMP-2. Treatment with BMP-2 resulted in a large increase in hypertrophic markers such as AP activity and gene expression of type X collagen, whereas treatment with the peptide resulted in little-to-no increase in these markers. These results suggest that the BMP peptide could be an effective new tool for cartilage tissue engineering.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Alkaline Phosphatase / biosynthesis
  • Alkaline Phosphatase / genetics
  • Amino Acid Sequence
  • Bone Morphogenetic Protein 2 / pharmacology*
  • Cells, Cultured / cytology
  • Cells, Cultured / drug effects
  • Chondrogenesis / drug effects*
  • Collagen / biosynthesis
  • Collagen / genetics
  • Dose-Response Relationship, Drug
  • Drug Evaluation, Preclinical
  • Extracellular Matrix / drug effects
  • Gene Expression Profiling
  • Glycosaminoglycans / biosynthesis
  • Humans
  • Hypertrophy
  • Mesenchymal Stem Cells / cytology
  • Mesenchymal Stem Cells / drug effects*
  • Molecular Sequence Data
  • Peptide Fragments / chemical synthesis
  • Peptide Fragments / pharmacology*
  • Stimulation, Chemical

Substances

  • Bone Morphogenetic Protein 2
  • Glycosaminoglycans
  • Peptide Fragments
  • Collagen
  • ALPL protein, human
  • Alkaline Phosphatase