PMID- 31250384 OWN - NLM STAT- MEDLINE DCOM- 20200402 LR - 20210110 IS - 1559-1182 (Electronic) IS - 0893-7648 (Linking) VI - 56 IP - 12 DP - 2019 Dec TI - Neurotrophic Factors Mediated Activation of Astrocytes Ameliorate Memory Loss by Amyloid Clearance after Transplantation of Lineage Negative Stem Cells. PG - 8420-8434 LID - 10.1007/s12035-019-01680-z [doi] AB - Alzheimer's disease (AD) is one of the untreatable neurodegenerative disorders with associated societal burden. Current therapies only provide symptomatic relief without altering the rate of disease progression as reported by Lanctot et al. (Therapeutic Advances in Neurological Disorders 2 (3):163-180, 2009). The increased number of failed clinical trials in last two decades indicates the imperative need to explore alternative therapies for AD as reported by Tuszynski et al. (Nature Medicine 11 (5):551-555, 2005) and Liyanage et al. (Alzheimer's & Dementia 4:628-635, 2005). In this study, we aimed to decipher the role of neurotrophic factors in the reversal of memory loss by transplantation of lineage negative (Lin-ve) stem cells in a male mouse model of cognitive impairment induced by intrahippocampal injection of amyloid beta-42 (Abeta-42). The efficacy of human umbilical cord blood (hUCB) derived Lin-ve stem cells were analyzed by neurobehavioral parameters, i.e., Morris water maze and passive avoidance after bilateral intra-hippocampal transplantation using stereotaxic surgery. Real-time PCR and immunohistochemistry was carried out in brain tissues in order to analyze the expression of neurotrophic factors, apoptotic, astrocytic, and other neuronal cell markers. The transplantation of Lin-ve stem cells led to reversal of memory loss associated with reduction of Abeta-42 deposition from the brains. The molecular analysis revealed increase in neurotrophic factors, i.e., glial derived neurotrophic factor (GDNF), ciliary derived neurotrophic factor (CNTF), and Brain-derived neurotrophic factor (BDNF) after transplantation. The administration of ANA-12, a TrkB inhibitor, reversed the behavioral and molecular effects of stem cell transplantation suggesting involvement of BDNF-TrkB pathway in the rescue of memory loss. We believe that the amyloid clearance results from activation of astrocytes and anti-apoptotic pathways added by neurotrophic factors. FAU - Bali, P AU - Bali P AD - Department of Biophysics, Panjab University, Chandigarh, 160014, India. AD - Neuroscience Research Lab, Department of Neurology, Post Graduated Institute of Medical Education and Research, Chandigarh, 160012, India. FAU - Banik, A AU - Banik A AD - Department of Pharmacology and Chemical Biology, Emory University School of Medicine, Rollins Research Center, Atlanta, GA, 30322, USA. FAU - Nehru, B AU - Nehru B AD - Department of Biophysics, Panjab University, Chandigarh, 160014, India. FAU - Anand, Akshay AU - Anand A AUID- ORCID: 0000-0001-9003-3532 AD - Neuroscience Research Lab, Department of Neurology, Post Graduated Institute of Medical Education and Research, Chandigarh, 160012, India. akshay1anand@rediffmail.com. LA - eng PT - Journal Article DEP - 20190627 PL - United States TA - Mol Neurobiol JT - Molecular neurobiology JID - 8900963 RN - 0 (Amyloid) RN - 0 (Amyloid beta-Peptides) RN - 0 (Nerve Growth Factors) RN - EC 2.7.10.1 (Receptor, trkB) SB - IM MH - Amyloid/*metabolism MH - Amyloid beta-Peptides/metabolism MH - Animals MH - Apoptosis MH - Astrocytes/metabolism/*pathology MH - Behavior, Animal MH - Brain/pathology MH - *Cell Lineage MH - Cell Proliferation MH - Conditioning, Classical MH - Fear MH - Fetal Blood/cytology MH - Humans MH - Male MH - Maze Learning MH - Memory Disorders/*therapy MH - Mice MH - Models, Biological MH - Nerve Growth Factors/metabolism MH - Receptor, trkB/metabolism MH - *Stem Cell Transplantation MH - Stem Cells/*cytology/metabolism MH - Swimming OTO - NOTNLM OT - Alzheimer's disease OT - Amyloid injury OT - BDNF OT - Lineage negative stem cells OT - Memory loss OT - Neurotrophic factor OT - Umbilical cord blood EDAT- 2019/06/30 06:00 MHDA- 2020/04/03 06:00 CRDT- 2019/06/29 06:00 PHST- 2019/03/02 00:00 [received] PHST- 2019/06/14 00:00 [accepted] PHST- 2019/06/30 06:00 [pubmed] PHST- 2020/04/03 06:00 [medline] PHST- 2019/06/29 06:00 [entrez] AID - 10.1007/s12035-019-01680-z [pii] AID - 10.1007/s12035-019-01680-z [doi] PST - ppublish SO - Mol Neurobiol. 2019 Dec;56(12):8420-8434. doi: 10.1007/s12035-019-01680-z. Epub 2019 Jun 27.