Journal
SCIENCE
Volume 348, Issue 6239, Pages 1151-1154Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aaa9344
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Funding
- National Institute on Aging, NIH [P50AG016574]
- National Institute of Neurological Disorders and Stroke, NIH [R21NS089979, R21NS084528, R21NS079807, R01NS088689, R01NS063964, R01NS077402, P01NS084974]
- National Institute of Environmental Health Services, NIH [R01ES20395]
- U.S. Department of Defense [ALS Research Program] [AL130125]
- Mayo Clinic Foundation
- Mayo Clinic Center for Regenerative Medicine
- Mayo Graduate School
- ALS Association
- Robert Packard Center for ALS Research at Johns Hopkins
- Target ALS
- Alzheimer's Association [NIRP-14-304425, NIRP-12-259289]
- European Research Council under European Union [617198]
- European Research Council (ERC) [617198] Funding Source: European Research Council (ERC)
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The major genetic cause of frontotemporal dementia and amyotrophic lateral sclerosis is a G(4)C(2) repeat expansion in C9ORF72. Efforts to combat neurodegeneration associated with c9FTD/ALS are hindered by a lack of animal models recapitulating disease features. We developed a mouse model to mimic both neuropathological and clinical c9FTD/ALS phenotypes. We expressed (G(4)C(2))(66) throughout the murine central nervous system by means of somatic brain transgenesis mediated by adeno-associated virus. Brains of 6-month-old mice contained nuclear RNA foci, inclusions of poly(Gly-Pro), poly(Gly-Ala), and poly(Gly-Arg) dipeptide repeat proteins, as well as TDP-43 pathology. These mouse brains also exhibited cortical neuron and cerebellar Purkinje cell loss, astrogliosis, and decreased weight. (G(4)C(2))(66) mice also developed behavioral abnormalities similar to clinical symptoms of c9FTD/ALS patients, including hyperactivity, anxiety, antisocial behavior, and motor deficits.
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