Neural stem/progenitor cells differentiate in vitro to neurons by the combined action of dibutyryl cAMP and interferon-gamma

Stem Cells Dev. 2009 Dec;18(10):1423-32. doi: 10.1089/scd.2008.0412.

Abstract

Transplantation of neural stem/progenitor cells (NSPCs) is a promising strategy for repair of the diseased/injured central nervous system (CNS); however, controlling their differentiation remains a significant hurdle. This study is aimed at controlling differentiation and specifically at screening exogenous factors to direct NSPC differentiation into neurons in vitro. In this study, adult rat SVZ-derived NSPCs were treated with several factors and screened individually and in combination for changes in cellular morphology, neuronal marker expression, quantitative real-time qRT-PCR, and electrophysiological properties. These in vitro screens showed that of all the different treatments, dibutyryl cyclic AMP (dbcAMP) and interferon-gamma (IFN-gamma) enhanced neuronal differentiation most significantly compared to the 1% fetal bovine serum (FBS) controls. Importantly, the combined treatment of NSPCs with dbcAMP and IFN-gamma promoted greater neuronal differentiation as reflected by an increase in beta-III tubulin expression and morphological differentiation. Interestingly, the neurons that were generated from the NSPCs in vitro in the presence of dbcAMP and IFN-gamma, alone or in combination, responded to exogenous glutamate (Glu), but not gamma-aminobutyric acid (GABA), indicating that these neurons express glutamate receptors. These NSPC-derived neurons may be promising for neural regenerative strategies in the CNS.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aging / drug effects
  • Animals
  • Bucladesine / pharmacology*
  • Cell Differentiation / drug effects*
  • Cell Survival / drug effects
  • Electrophysiological Phenomena / drug effects
  • Gene Expression Profiling
  • Gene Expression Regulation / drug effects
  • Interferon-gamma / pharmacology*
  • Male
  • Neurons / cytology*
  • Neurons / drug effects*
  • Neurons / metabolism
  • Prosencephalon / cytology
  • Rats
  • Rats, Wistar
  • Stem Cells / cytology*
  • Stem Cells / drug effects*
  • Stem Cells / metabolism

Substances

  • Bucladesine
  • Interferon-gamma