Effect of hypoxia on generation of neurospheres from adipose tissue-derived canine mesenchymal stromal cells

D. J. Chung, A. Wong, K. Hayashi, Clare E Yellowley-genetos

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Adipose tissue-derived mesenchymal stromal cells (AT-MSCs) are good candidates for cell therapy due to the accessibility of fat tissue and the abundance of AT-MSCs therein. Neurospheres are free-floating spherical condensations of cells with neural stem/progenitor cell (NSPC) characteristics that can be derived from AT-MSCs. The aims of this study were to examine the influence of oxygen (O2) tension on generation of neurospheres from canine AT-MSCs (AT-cMSCs) and to develop a hypoxic cell culture system to enhance the survival and therapeutic benefit of generated neurospheres.AT-cMSCs were cultured under varying oxygen tensions (1%, 5% and 21%) in a neurosphere culture system. Neurosphere number and area were evaluated and NSPC markers were quantified using real-time quantitative PCR (qPCR). Effects of oxygen on neurosphere expression of hypoxia inducible factor 1, α subunit (HIF1A) and its target genes, erythropoietin receptor (EPOR), chemokine (C-X-C motif) receptor 4 (CXCR4) and vascular endothelial growth factor (VEGF), were quantified by qPCR. Neural differentiation potential was evaluated in 21% O2 by cell morphology and qPCR.Neurospheres were successfully generated from AT-cMSCs at all O2 tensions. Expression of nestin mRNA (NES) was significantly increased after neurosphere culture and was significantly higher in 1% O2 compared to 5% and 21% O2. Neurospheres cultured in 1% O2 had significantly increased levels of VEGF and EPOR. There was a significant increase in CXCR4 expression in neurospheres generated at all O2 tensions. Neurosphere culture under hypoxia had no negative effect on subsequent neural differentiation. This study suggests that generation of neurospheres under hypoxia could be beneficial when considering these cells for neurological cell therapies.

Original languageEnglish (US)
Pages (from-to)123-130
Number of pages8
JournalVeterinary Journal
Volume199
Issue number1
DOIs
StatePublished - Jan 2014

Fingerprint

stromal cells
Mesenchymal Stromal Cells
Erythropoietin Receptors
adipose tissue
Canidae
Adipose Tissue
hypoxia
Neural Stem Cells
stem cells
Oxygen
Cell- and Tissue-Based Therapy
dogs
CCR Receptors
Stem Cells
erythropoietin
quantitative polymerase chain reaction
vascular endothelial growth factors
Hypoxia-Inducible Factor 1
Nestin
Polymerase Chain Reaction

Keywords

  • Adipose tissue
  • Canine mesenchymal stromal cell
  • Hypoxia
  • Neural stem cell
  • Neurosphere

ASJC Scopus subject areas

  • Animal Science and Zoology
  • veterinary(all)

Cite this

Effect of hypoxia on generation of neurospheres from adipose tissue-derived canine mesenchymal stromal cells. / Chung, D. J.; Wong, A.; Hayashi, K.; Yellowley-genetos, Clare E.

In: Veterinary Journal, Vol. 199, No. 1, 01.2014, p. 123-130.

Research output: Contribution to journalArticle

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