title: Galectin-3 secreted by human umbilical cord blood-derived mesenchymal stem cells reduces amyloid-beta42 neurotoxicity in vitro.
abstract: In this study, we found that expression and secretion of galectin-3 (GAL-3) were upregulated by amyloid-beta42 (Abeta42) exposure in human umbilical cord blood-derived mesenchymal stem cell (hUCB-MSC) without cell death. Abeta42-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 Abeta42-exposed rat primary neuronal cells or the neuroblastoma cell line, SH-SY5Y in a Transwell chamber. Coculture of hUCB-MSCs reduced cell death of Abeta42-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 Abeta42 neurotoxicity.
authors.affiliation: Biomedical Research Institute, MEDIPOST Co., Ltd., Seoul 137-874, Republic of Korea.
authors.forename: Ju-Yeon
authors.initials: JY
authors.lastname: Kim
authors.forename: Dong Hyun
authors.initials: DH
authors.lastname: Kim
authors.forename: Dal-Soo
authors.initials: DS
authors.lastname: Kim
authors.forename: Ji Hyun
authors.initials: JH
authors.lastname: Kim
authors.forename: Sang Young
authors.initials: SY
authors.lastname: Jeong
authors.forename: Hong Bae
authors.initials: HB
authors.lastname: Jeon
authors.forename: Eun Hui
authors.initials: EH
authors.lastname: Lee
authors.forename: Yoon Sun
authors.initials: YS
authors.lastname: Yang
authors.forename: Wonil
authors.initials: W
authors.lastname: Oh
authors.forename: Jong Wook
authors.initials: JW
authors.lastname: Chang
mesh_terms: D016229:Amyloid beta-Peptides / Q000633:toxicity*; D000818:Animals; D002460:Cell Line; D002478:Cells, Cultured; D018920:Coculture Techniques; D005312:Fetal Blood / Q000166:cytology / Q000187:drug effects / Q000502:physiology; D037502:Galectin 3 / Q000037:antagonists & inhibitors / Q000235:genetics / Q000494:pharmacology / Q000502:physiology*; D055785:Gene Knockdown Techniques; D006801:Humans; D059630:Mesenchymal Stem Cells / Q000166:cytology / Q000187:drug effects / Q000502:physiology*; D009474:Neurons / Q000166:cytology / Q000187:drug effects / Q000502:physiology; D018696:Neuroprotective Agents / Q000494:pharmacology; D009498:Neurotoxins / Q000633:toxicity; D010446:Peptide Fragments / Q000633:toxicity*; D034741:RNA, Small Interfering; D051381:Rats; D015854:Up-Regulation / Q000187:drug effects
chemical_list: D016229:Amyloid beta-Peptides; D037502:Galectin 3; D018696:Neuroprotective Agents; D009498:Neurotoxins; D010446:Peptide Fragments; D034741:RNA, Small Interfering; C075222:amyloid beta-protein (1-42)