Isolation and characterization of canine perivascular stem/stromal cells for bone tissue engineering

PLoS One. 2017 May 10;12(5):e0177308. doi: 10.1371/journal.pone.0177308. eCollection 2017.

Abstract

For over 15 years, human subcutaneous adipose tissue has been recognized as a rich source of tissue resident mesenchymal stem/stromal cells (MSC). The isolation of perivascular progenitor cells from human adipose tissue by a cell sorting strategy was first published in 2008. Since this time, the interest in using pericytes and related perivascular stem/stromal cell (PSC) populations for tissue engineering has significantly increased. Here, we describe a set of experiments identifying, isolating and characterizing PSC from canine tissue (N = 12 canine adipose tissue samples). Results showed that the same antibodies used for human PSC identification and isolation are cross-reactive with canine tissue (CD45, CD146, CD34). Like their human correlate, canine PSC demonstrate characteristics of MSC including cell surface marker expression, colony forming unit-fibroblast (CFU-F) inclusion, and osteogenic differentiation potential. As well, canine PSC respond to osteoinductive signals in a similar fashion as do human PSC, such as the secreted differentiation factor NEL-Like Molecule-1 (NELL-1). Nevertheless, important differences exist between human and canine PSC, including differences in baseline osteogenic potential. In summary, canine PSC represent a multipotent mesenchymogenic cell source for future translational efforts in tissue engineering.

MeSH terms

  • Adipose Tissue / cytology*
  • Animals
  • Bone and Bones / cytology
  • Bone and Bones / physiology
  • Calcium-Binding Proteins
  • Cell Differentiation
  • Cell Separation* / methods
  • Cells, Cultured
  • Dogs
  • Fibroblast Growth Factor 2 / metabolism
  • Humans
  • Mesenchymal Stem Cells / cytology
  • Mesenchymal Stem Cells / metabolism
  • Nerve Tissue Proteins / metabolism
  • Osteogenesis*
  • Platelet-Derived Growth Factor / metabolism
  • Recombinant Proteins / metabolism
  • Stromal Cells / cytology*
  • Stromal Cells / metabolism
  • Tissue Engineering* / methods
  • Vascular Endothelial Growth Factor A / metabolism

Substances

  • Calcium-Binding Proteins
  • NELL1 protein, human
  • Nerve Tissue Proteins
  • Platelet-Derived Growth Factor
  • Recombinant Proteins
  • Vascular Endothelial Growth Factor A
  • Fibroblast Growth Factor 2