PMID- 26620543 OWN - NLM STAT- MEDLINE DCOM- 20161213 LR - 20161230 IS - 1872-6240 (Electronic) IS - 0006-8993 (Linking) VI - 1631 DP - 2016 Jan 15 TI - A human neural stem cell line provides neuroprotection and improves neurological performance by early intervention of neuroinflammatory system. PG - 194-203 LID - S0006-8993(15)00878-1 [pii] LID - 10.1016/j.brainres.2015.11.031 [doi] AB - A human neural stem cell line, HB1.F3, demonstrated neuroprotective properties in cerebral ischemia animal models. In this study, we have investigated about the mechanisms of such neuroprotection, mainly focusing on the neuroinflammatory system at an earlier time point of the pathology. Cerebral ischemia model was generated by middle cerebral artery occlusion (MCAO) in adult male Wister rats. HB1.F3 cells were transplanted through jugular vein 6h after MCAO. Forty eight hours after MCAO, transplanted rats showed better neurological performance and decreased TUNEL positive apoptotic cell number in the penumbra. However, haematoxylin and eosin staining and immunostaining showed that, HB1.F3 cells did not affect the necrotic cell death. Twenty four hours after MCAO (18h after HB1.F3 transplantation), infiltrated granulocytes and macrophage/microglia number in the core regions were decreased compared to PBS-treated controls. Immunohistochemical analysis further demonstrated that the transplantation decreased inducible nitric oxide synthase (iNOS) and cyclooxygenase (COX)-2 expressing cell number in the core and penumbra, respectively. Double immunofluorescence results revealed that iNOS was mainly expressed in granulocytes and macrophage/microglia in the core region, and COX-2 mainly expressed in neurons, endothelial cells and granulocytes in penumbra. Further analysis showed that although the percentage of iNOS expressing granulocytes and macrophage/microglia was not decreased, COX-2 expressing neurons and vessel number was decreased by the transplantation. In vitro mRNA analysis showed that brain-derived neurotrophic factor (BDNF), basic fibroblast growth factor (betaFGF) and bone morphogenic protein (BMP)-4 expression was high in cultured HB1.F3 cells. Thus, our results demonstrated that HB1.F3 cell transplantation provide neuroprotection possibly through the regulation of early inflammatory events in the cerebral ischemia condition. CI - Copyright (c) 2015 Elsevier B.V. All rights reserved. FAU - Watanabe, Tatsuzo AU - Watanabe T AD - Department of Internal Medicine III, Shimane University School of Medicine, 89-1 Enya Cho, Izumo 693-8501, Japan. FAU - Nagai, Atsushi AU - Nagai A AD - Department of Laboratory Medicine, Shimane University School of Medicine, 89-1 Enya Cho, Izumo 693-8501, Japan. Electronic address: anagai@med.shimane-u.ac.jp. FAU - Sheikh, Abdullah Md AU - Sheikh AM AD - Department of Laboratory Medicine, Shimane University School of Medicine, 89-1 Enya Cho, Izumo 693-8501, Japan. FAU - Mitaki, Shingo AU - Mitaki S AD - Department of Internal Medicine III, Shimane University School of Medicine, 89-1 Enya Cho, Izumo 693-8501, Japan. FAU - Wakabayashi, Kiryo AU - Wakabayashi K AD - Department of Internal Medicine III, Shimane University School of Medicine, 89-1 Enya Cho, Izumo 693-8501, Japan. FAU - Kim, Seung U AU - Kim SU AD - Department of Neurology, UBC Hospital, University of British Columbia, Vancouver, Canada; Medical Research Institute, Chung-Ang University College of Medicine, Seoul, Republic of Korea. FAU - Kobayashi, Shotai AU - Kobayashi S AD - Department of Internal Medicine III, Shimane University School of Medicine, 89-1 Enya Cho, Izumo 693-8501, Japan. FAU - Yamaguchi, Shuhei AU - Yamaguchi S AD - Department of Internal Medicine III, Shimane University School of Medicine, 89-1 Enya Cho, Izumo 693-8501, Japan. LA - eng PT - Journal Article DEP - 20151124 PL - Netherlands TA - Brain Res JT - Brain research JID - 0045503 RN - EC 1.14.13.39 (Nitric Oxide Synthase Type II) RN - EC 1.14.13.39 (Nos2 protein, rat) RN - EC 1.14.99.1 (Cyclooxygenase 2) RN - EC 1.14.99.1 (Ptgs2 protein, rat) SB - IM MH - Animals MH - Brain Ischemia/immunology/metabolism/pathology/*prevention & control MH - Cell Line MH - Cyclooxygenase 2/metabolism MH - Disease Models, Animal MH - Granulocytes/metabolism MH - Humans MH - Infarction, Middle Cerebral Artery/immunology/metabolism/pathology/*therapy MH - Macrophages/metabolism MH - Male MH - Mesenchymal Stem Cell Transplantation/*methods MH - Microglia/metabolism/pathology MH - Neural Stem Cells/cytology/*transplantation MH - Neuroimmunomodulation MH - Neurons/metabolism/pathology MH - Neuroprotection MH - Nitric Oxide Synthase Type II/metabolism MH - Rats MH - Rats, Wistar OTO - NOTNLM OT - HB1.F3 cells OT - Middle cerebral artery occlusion OT - Neural stem cell OT - Neuroinflammation OT - Neuroprotection EDAT- 2015/12/02 06:00 MHDA- 2016/12/15 06:00 CRDT- 2015/12/02 06:00 PHST- 2015/07/22 00:00 [received] PHST- 2015/11/12 00:00 [revised] PHST- 2015/11/18 00:00 [accepted] PHST- 2015/12/02 06:00 [entrez] PHST- 2015/12/02 06:00 [pubmed] PHST- 2016/12/15 06:00 [medline] AID - S0006-8993(15)00878-1 [pii] AID - 10.1016/j.brainres.2015.11.031 [doi] PST - ppublish SO - Brain Res. 2016 Jan 15;1631:194-203. doi: 10.1016/j.brainres.2015.11.031. Epub 2015 Nov 24.