PMID- 24633139 OWN - NLM STAT- MEDLINE DCOM- 20150819 LR - 20181202 IS - 1552-6844 (Electronic) IS - 1545-9683 (Linking) VI - 29 IP - 1 DP - 2015 Jan TI - Bone marrow stromal cells rescue ischemic brain by trophic effects and phenotypic change toward neural cells. PG - 80-9 LID - 10.1177/1545968314525856 [doi] AB - Background. Transplantation of bone marrow stromal cells (BMSCs) may contribute to functional recovery after stroke. This study was designed to clarify their mechanisms, trophic effects of neurotrophic factors, and neural differentiation. Methods. Mouse neurons exposed to glutamate were cocultured with mouse BMSCs. Either neutralizing antibodies against brain-derived neurotrophic factor (BDNF) or nerve growth factor (NGF) or Trk inhibitor K252a was added to explore the mechanism of their protective effects. Fluorescence in situ hybridization (FISH) was used to assess BDNF or NGF mRNA expression in BMSCs. The mice were subjected to permanent focal ischemia, and 7 days later, either BMSCs or the vehicle was stereotactically transplanted into the ipsilateral striatum. The mouse brains were processed for FISH and immunostaining 2 or 4 weeks after transplantation. Results. BMSCs significantly ameliorated glutamate-induced neuronal death. Treatment with anti-BDNF antibody significantly reduced their protective effects. FISH analysis showed that the majority of BMSCs expressed BDNF and NGF mRNA in vitro. BMSC transplantation significantly improved the survival of neurons in peri-infarct areas. FISH analysis revealed that approximately half of BMSCs expressed BDNF and NGF mRNA 2 weeks after transplantation; however, the percentage of BDNF and NGF mRNA-positive cells decreased thereafter. Instead, the percentage of microtubule-associated protein 2-positive BMSCs gradually increased during 4 weeks after transplantation. Conclusions. These findings strongly suggest that BDNF may be a key factor underlying the trophic effects of BMSCs. BMSCs might exhibit the trophic effect in the early stage of cell therapy and the phenotypic change toward neural cells thereafter. CI - (c) The Author(s) 2014. FAU - Shichinohe, Hideo AU - Shichinohe H AD - Depertment of Neurosurgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan. FAU - Ishihara, Takeshi AU - Ishihara T AD - Shionogi Innovation Center for Drug, Shionogi & Co Ltd, Sapporo, Japan. FAU - Takahashi, Koji AU - Takahashi K AD - Shionogi Innovation Center for Drug, Shionogi & Co Ltd, Sapporo, Japan. FAU - Tanaka, Yoshikazu AU - Tanaka Y AD - Shionogi Innovation Center for Drug, Shionogi & Co Ltd, Sapporo, Japan. FAU - Miyamoto, Michiyuki AU - Miyamoto M AD - Depertment of Neurosurgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan. FAU - Yamauchi, Tomohiro AU - Yamauchi T AD - Depertment of Neurosurgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan. FAU - Saito, Hisayasu AU - Saito H AD - Depertment of Neurosurgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan. FAU - Takemoto, Hiroshi AU - Takemoto H AD - Shionogi Innovation Center for Drug, Shionogi & Co Ltd, Sapporo, Japan. FAU - Houkin, Kiyohiro AU - Houkin K AD - Depertment of Neurosurgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan. FAU - Kuroda, Satoshi AU - Kuroda S AD - Department of Neurosurgery, Graduate School of Medicine and Pharmaceutical Science for Education, University of Toyama, Toyama, Japan skuroda@med.u-toyama.ac.jp. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140314 PL - United States TA - Neurorehabil Neural Repair JT - Neurorehabilitation and neural repair JID - 100892086 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Microtubule-Associated Proteins) RN - 0 (RNA, Messenger) RN - 0 (enhanced green fluorescent protein) RN - 147336-22-9 (Green Fluorescent Proteins) RN - 9061-61-4 (Nerve Growth Factor) RN - EC 4.2.1.11 (Phosphopyruvate Hydratase) SB - IM MH - Animals MH - Brain-Derived Neurotrophic Factor/genetics/*metabolism MH - Cell Count MH - Cells, Cultured MH - Cerebral Cortex/cytology MH - Coculture Techniques MH - Disease Models, Animal MH - Embryo, Mammalian MH - Green Fluorescent Proteins/genetics/metabolism MH - Imaging, Three-Dimensional MH - Infarction, Middle Cerebral Artery/*surgery MH - Male MH - Mesenchymal Stem Cell Transplantation/*methods MH - Mesenchymal Stem Cells/*physiology MH - Mice MH - Mice, Inbred BALB C MH - Mice, Transgenic MH - Microtubule-Associated Proteins/metabolism MH - Nerve Growth Factor/genetics/*metabolism MH - Neurons/metabolism MH - Phosphopyruvate Hydratase/*metabolism MH - RNA, Messenger/metabolism OTO - NOTNLM OT - bone marrow stromal cells OT - coculture OT - neurotrophic factor OT - permanent middle cerebral artery occlusion OT - regenerative medicine EDAT- 2014/03/19 06:00 MHDA- 2015/08/20 06:00 CRDT- 2014/03/18 06:00 PHST- 2014/03/18 06:00 [entrez] PHST- 2014/03/19 06:00 [pubmed] PHST- 2015/08/20 06:00 [medline] AID - 1545968314525856 [pii] AID - 10.1177/1545968314525856 [doi] PST - ppublish SO - Neurorehabil Neural Repair. 2015 Jan;29(1):80-9. doi: 10.1177/1545968314525856. Epub 2014 Mar 14.