title: Neuroprotection through delivery of glial cell line-derived neurotrophic factor by neural stem cells in a mouse model of Parkinson's disease.
abstract: Neural stem cells (NSCs) have been proposed as tools for treating neurodegeneration because of their capacity to give rise to cell types appropriate to the structure in which they are grafted. In the present work, we explore the ability of NSCs to stably express transgenes and locally deliver soluble molecules with neuroprotective activity, such as glial cell line-derived neurotrophic factor (GDNF). NSCs engineered to release GDNF engrafted well in the host striatum, integrated and gave rise to neurons, astrocytes, and oligodendrocytes, and maintained stable high levels of GDNF expression for at least 4 months. The therapeutic potential of intrastriatal GDNF-NSCs grafts was tested in a mouse 6-hydroxydopamine model of Parkinson's disease. We found that GDNF-NSCs prevented the degeneration of dopaminergic neurons in the substantia nigra and reduced behavioral impairment in these animals. Thus, our results demonstrate that NSCs efficiently express therapeutic levels of GDNF in vivo, suggesting a use for NSCs engineered to release neuroprotective molecules in the treatment of neurodegenerative disorders, including Parkinson's disease.
authors.affiliation: Laboratory of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institute, S-17177 Stockholm, Sweden.
authors.forename: P
authors.initials: P
authors.lastname: Akerud
authors.forename: J M
authors.initials: JM
authors.lastname: Canals
authors.forename: E Y
authors.initials: EY
authors.lastname: Snyder
authors.forename: E
authors.initials: E
authors.lastname: Arenas
mesh_terms: D000818:Animals; D001522:Behavior, Animal / Q000187:drug effects; D002454:Cell Differentiation; D002465:Cell Movement; D002470:Cell Survival / Q000187:drug effects; D002478:Cells, Cultured; D002999:Clone Cells / Q000378:metabolism / Q000637:transplantation; D004195:Disease Models, Animal; D051100:Glial Cell Line-Derived Neurotrophic Factor; D006085:Graft Survival / Q000187:drug effects; D008297:Male; D051379:Mice; D008819:Mice, Nude; D009414:Nerve Growth Factors; D009419:Nerve Tissue Proteins / Q000096:biosynthesis* / Q000494:pharmacology; D009474:Neurons / Q000166:cytology / Q000187:drug effects*; D016627:Oxidopamine; D010302:Parkinson Disease, Secondary / Q000139:chemically induced / Q000628:therapy*; D033581:Stem Cell Transplantation; D013234:Stem Cells / Q000378:metabolism*; D013378:Substantia Nigra / Q000187:drug effects / Q000473:pathology
chemical_list: C495040:Gdnf protein, mouse; D051100:Glial Cell Line-Derived Neurotrophic Factor; D009414:Nerve Growth Factors; D009419:Nerve Tissue Proteins; D016627:Oxidopamine