Adipose stromal cells-secreted neuroprotective media against neuronal apoptosis

X. Wei, L. Zhao, J. Zhong, H. Gu, D. Feng, B. H. Johnstone, K. L. March, M. R. Farlow, Y. Du

Research output: Contribution to journalArticle

85 Scopus citations

Abstract

Transplantation of pluripotent adipose stem/stromal cells (ASC) alleviates tissue damage and improves functional deficits in both stroke and cardiovascular disease animal models. Recent studies indicate that the primary mechanism of ASC-induced repair may not be directly related to tissue regeneration through differentiation, but rather through paracrine mechanisms provided by secreted pro-survival and repair-inducing trophic factors. In this study, we have found that ASC-conditioned medium (ASC-CM) potently protected cerebellar granule neurons (CGN) from apoptosis induced by serum and potassium deprivation. Neural cell protection was mostly attributable to activated caspase-3 and Akt-mediated neuroprotective pathway signaling. Specific neutralization of neurotrophic factor activity demonstrated that serum and potassium deprivation-induced Akt-mediated neuroprotection and caspase-3-dependent apoptosis were mainly modulated by IGF-1. These data suggest that of the many neuroprotective factors secreted by ASC, IGF-1 is the major factor that mediates protection against serum and potassium deprivation-induced CGN apoptosis. This study establishes a mechanistic basis supporting the therapeutic application of ASC for neurological disorders, specifically through paracrine support provided by trophic factor secretion.

Original languageEnglish (US)
Pages (from-to)76-79
Number of pages4
JournalNeuroscience Letters
Volume462
Issue number1
DOIs
StatePublished - Sep 18 2009

Keywords

  • Adipose stromal cells
  • Apoptosis
  • Caspase-3
  • Cerebella granule neuron
  • Neuroprotection

ASJC Scopus subject areas

  • Neuroscience(all)

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