1. Human embryonic stem cell-derived motor neurons expressing SOD1 mutants exhibit typical signs of motor neuron degeneration linked to ALS.
- Author
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Karumbayaram S, Kelly TK, Paucar AA, Roe AJ, Umbach JA, Charles A, Goldman SA, Kornblum HI, and Wiedau-Pazos M
- Subjects
- Amyotrophic Lateral Sclerosis physiopathology, Calcium metabolism, Cell Differentiation, Cell Separation, Cell Survival, Cells, Cultured, Electrophysiology methods, Embryonic Stem Cells metabolism, Humans, Motor Neurons metabolism, Mutation, Neurodegenerative Diseases physiopathology, Superoxide Dismutase-1, Time Factors, Amyotrophic Lateral Sclerosis genetics, Embryonic Stem Cells cytology, Gene Expression Regulation, Motor Neurons pathology, Superoxide Dismutase genetics
- Abstract
Human embryonic stem cell (hESC)-derived neurons have the potential to model neurodegenerative disorders. Here, we demonstrate the expression of a mutant gene, superoxide dismutase 1(SOD1), linked to familial amyotrophic lateral sclerosis (ALS) in hESC-derived motor neurons. Green fluorescent protein (GFP) expression under the control of the HB9 enhancer was used to identify SOD1-transfected motor neurons that express human wild-type SOD1 or one of three different mutants (G93A, A4V and I113T) of SOD1. Neurons transfected with mutant SOD1 exhibited reduced cell survival and shortened axonal processes as compared with control-transfected cells, which could survive for 3 weeks or more. The results indicate that hESC-derived cell populations can be directed to express disease-relevant genes and to display characteristics of the disease-specific cell type. These genetically manipulated hESC-derived motor neurons can facilitate and advance the study of disease-specific cellular pathways, and serve as a model system to test new therapeutic approaches.
- Published
- 2009
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