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Foust KD, Salazar DL, Likhite S, Ferraiuolo L, Ditsworth D, Ilieva H, Meyer K, Schmelzer L, Braun L, Cleveland DW, Kaspar BK. Therapeutic AAV9-mediated suppression of mutant SOD1 slows disease progression and extends survival in models of inherited ALS. Mol Ther 2013; 21:2148-59. [PMID: 24008656 PMCID: PMC3863799 DOI: 10.1038/mt.2013.211] [Citation(s) in RCA: 154] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Accepted: 08/25/2013] [Indexed: 12/14/2022] Open
Abstract
Mutations in superoxide dismutase 1 (SOD1) are linked to familial amyotrophic lateral sclerosis (ALS) resulting in progressive motor neuron death through one or more acquired toxicities. Involvement of wild-type SOD1 has been linked to sporadic ALS, as misfolded SOD1 has been reported in affected tissues of sporadic patients and toxicity of astrocytes derived from sporadic ALS patients to motor neurons has been reported to be reduced by lowering the synthesis of SOD1. We now report slowed disease onset and progression in two mouse models following therapeutic delivery using a single peripheral injection of an adeno-associated virus serotype 9 (AAV9) encoding an shRNA to reduce the synthesis of ALS-causing human SOD1 mutants. Delivery to young mice that develop aggressive, fatal paralysis extended survival by delaying both disease onset and slowing progression. In a later-onset model, AAV9 delivery after onset markedly slowed disease progression and significantly extended survival. Moreover, AAV9 delivered intrathecally to nonhuman primates is demonstrated to yield robust SOD1 suppression in motor neurons and glia throughout the spinal cord and therefore, setting the stage for AAV9-mediated therapy in human clinical trials.
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Affiliation(s)
- Kevin D Foust
- Department of Neuroscience, The Ohio State University, Columbus, Ohio, USA
| | - Desirée L Salazar
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, California, USA
- Ludwig Institute for Cancer Research, La Jolla, California, USA
- Present address: Department of Biology, San Diego State University, San Diego, California, USA
| | - Shibi Likhite
- The Research Institute at Nationwide Children's Hospital, Columbus, Ohio, USA
- Molecular, Cellular & Developmental Biology Graduate Program, The Ohio State University, Columbus, Ohio, USA
| | - Laura Ferraiuolo
- The Research Institute at Nationwide Children's Hospital, Columbus, Ohio, USA
| | - Dara Ditsworth
- Ludwig Institute for Cancer Research, La Jolla, California, USA
| | | | - Kathrin Meyer
- The Research Institute at Nationwide Children's Hospital, Columbus, Ohio, USA
| | - Leah Schmelzer
- The Research Institute at Nationwide Children's Hospital, Columbus, Ohio, USA
| | - Lyndsey Braun
- The Research Institute at Nationwide Children's Hospital, Columbus, Ohio, USA
| | - Don W Cleveland
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, California, USA
- Ludwig Institute for Cancer Research, La Jolla, California, USA
| | - Brian K Kaspar
- Department of Neuroscience, The Ohio State University, Columbus, Ohio, USA
- The Research Institute at Nationwide Children's Hospital, Columbus, Ohio, USA
- Molecular, Cellular & Developmental Biology Graduate Program, The Ohio State University, Columbus, Ohio, USA
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