| Title |
C9ORF72 repeat expansions in mice cause TDP-43 pathology, neuronal loss, and behavioral deficits
|
|---|---|
| Published in |
Science, May 2015
|
| DOI | 10.1126/science.aaa9344 |
| Pubmed ID | |
| Authors |
Jeannie Chew, Tania F Gendron, Mercedes Prudencio, Hiroki Sasaguri, Yong-Jie Zhang, Monica Castanedes-Casey, Chris W Lee, Karen Jansen-West, Aishe Kurti, Melissa E Murray, Kevin F Bieniek, Peter O Bauer, Ena C Whitelaw, Linda Rousseau, Jeannette N Stankowski, Caroline Stetler, Lillian M Daughrity, Emilie A Perkerson, Pamela Desaro, Amelia Johnston, Karen Overstreet, Dieter Edbauer, Rosa Rademakers, Kevin B Boylan, Dennis W Dickson, John D Fryer, Leonard Petrucelli |
| Abstract |
The major genetic cause of frontotemporal dementia and amyotrophic lateral sclerosis is a G4C2 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 (G4C2)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. (G4C2)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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X Demographics
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 15 | 38% |
| United Kingdom | 8 | 20% |
| France | 2 | 5% |
| Spain | 1 | 3% |
| India | 1 | 3% |
| Germany | 1 | 3% |
| Switzerland | 1 | 3% |
| Australia | 1 | 3% |
| Ireland | 1 | 3% |
| Other | 1 | 3% |
| Unknown | 8 | 20% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 27 | 68% |
| Scientists | 11 | 28% |
| Practitioners (doctors, other healthcare professionals) | 1 | 3% |
| Science communicators (journalists, bloggers, editors) | 1 | 3% |
Mendeley demographics
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 5 | <1% |
| United Kingdom | 3 | <1% |
| Spain | 2 | <1% |
| China | 2 | <1% |
| Japan | 1 | <1% |
| France | 1 | <1% |
| Germany | 1 | <1% |
| Colombia | 1 | <1% |
| Unknown | 635 | 98% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 161 | 25% |
| Researcher | 92 | 14% |
| Student > Bachelor | 58 | 9% |
| Student > Master | 56 | 9% |
| Student > Doctoral Student | 32 | 5% |
| Other | 94 | 14% |
| Unknown | 158 | 24% |
| Readers by discipline | Count | As % |
|---|---|---|
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| Neuroscience | 136 | 21% |
| Biochemistry, Genetics and Molecular Biology | 92 | 14% |
| Medicine and Dentistry | 53 | 8% |
| Psychology | 8 | 1% |
| Other | 40 | 6% |
| Unknown | 176 | 27% |