Hypoxia inducible factor-stabilizing bioactive glasses for directing mesenchymal stem cell behavior

Tissue Eng Part A. 2015 Jan;21(1-2):382-9. doi: 10.1089/ten.TEA.2014.0083. Epub 2014 Oct 2.

Abstract

Oxygen tension is a known regulator of mesenchymal stem cell (MSC) plasticity, differentiation, proliferation, and recruitment to sites of injury. Materials capable of affecting the MSC oxygen-sensing pathway, independently of the environmental oxygen pressure, are therefore of immense interest to the tissue engineering (TE) and regenerative medicine community. In this study, we describe the evaluation of the effect of hypoxia inducible factor (HIF)-stabilizing bioactive glasses (BGs) on human MSCs. The dissolution products from these hypoxia-mimicking BGs stabilized HIF-1α in a concentration-dependent manner, altered cell proliferation and metabolism, and upregulated a number of genes involved in the hypoxic response (HIF1A, HIF2A, and VHL), MSC survival (SAG and BCL2), extracellular matrix remodeling (MMP1), and angiogenesis (VEGF and PDGF). These HIF-stabilizing materials can therefore be used to improve MSC survival and enhance regeneration in a number of TE strategies.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cell Hypoxia
  • Cell Survival
  • Gene Expression Regulation
  • Glass / chemistry*
  • Humans
  • Hypoxia-Inducible Factor 1, alpha Subunit / metabolism*
  • Mesenchymal Stem Cells / cytology*
  • Mesenchymal Stem Cells / metabolism
  • Protein Stability
  • Signal Transduction
  • Vascular Endothelial Growth Factor A / metabolism

Substances

  • Hypoxia-Inducible Factor 1, alpha Subunit
  • Vascular Endothelial Growth Factor A