In this study, we found that expression and secretion of galectin-3 (GAL-3) were upregulated by amyloid-β42 (Aβ42) exposure in human umbilical cord blood-derived mesenchymal stem cell (hUCB-MSC) without cell death. Aβ42-exposed rat primary cortical neuronal cells co-treated with recombinant GAL-3 were protected from neuronal death in a dose-dependent manner. hUCB-MSCs were cocultured with Aβ42-exposed rat primary neuronal cells or the neuroblastoma cell line, SH-SY5Y in a Transwell chamber. Coculture of hUCB-MSCs reduced cell death of Aβ42-exposed neurons and SH-SY5Y cells. This neuroprotective effect of hUCB-MSCs was reduced significantly by GAL-3 siRNA. These data suggested that hUCB-MSC-derived GAL-3 is a survival factor against Aβ42 neurotoxicity. © 2010 Federation of European Biochemical Societies.
Kim, J. Y., Kim, D. H., Kim, D. S., Kim, J. H., Jeong, S. Y., Jeon, H. B., … Chang, J. W. (2010). Galectin-3 secreted by human umbilical cord blood-derived mesenchymal stem cells reduces amyloid-β42 neurotoxicity in vitro. FEBS Letters, 584(16), 3601–3608. https://doi.org/10.1016/j.febslet.2010.07.028