A Mild PUM1 mutation is associated with adult-onset ataxia, whereas haploinsufficiency causes developmental delay and seizures
Certain mutations can cause proteins to accumulate in neurons, leading to neurodegeneration. We recently showed, however, that upregulation of a wild-type protein, Ataxin1, caused by haploinsufficiency of its repressor, the RNA-binding protein Pumilio1 (PUM1), also causes neurodegeneration in mice....
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| Main Authors: | , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
February 22, 2018
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| In: |
Cell
Year: 2018, Volume: 172, Issue: 5, Pages: 924–936,e1–e7 |
| ISSN: | 1097-4172 |
| DOI: | 10.1016/j.cell.2018.02.006 |
| Online Access: | Verlag, Volltext: https://doi.org/10.1016/j.cell.2018.02.006 Verlag: http://www.sciencedirect.com/science/article/pii/S0092867418301508 
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| Author Notes: | Vincenzo A. Gennarino, Elizabeth E. Palmer, Laura M. McDonell, Li Wang, Carolyn J. Adamski, Amanda Koire, Lauren See, Chun-An Chen, Christian P. Schaaf, Jill A. Rosenfeld, Jessica A. Panzer, Ute Moog, Shuang Hao, Ann Bye, Edwin P. Kirk, Pawel Stankiewicz, Amy M. Breman, Arran McBride, Tejaswi Kandula, Holly A. Dubbs, Rebecca Macintosh, Michael Cardamone, Ying Zhu, Kevin Ying, Kerith-Rae Dias, Megan T. Cho, Lindsay B. Henderson, Berivan Baskin, Paula Morris, Jiang Tao, Mark J. Cowley, Marcel E. Dinger, Tony Roscioli, Oana Caluseriu, Oksana Suchowersky, Rani K. Sachdev, Olivier Lichtarge, Jianrong Tang, Kym M. Boycott, J. Lloyd Holder, Jr., and Huda Y. Zoghbi |
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| 245 | 1 | 2 | |a A Mild PUM1 mutation is associated with adult-onset ataxia, whereas haploinsufficiency causes developmental delay and seizures |c Vincenzo A. Gennarino, Elizabeth E. Palmer, Laura M. McDonell, Li Wang, Carolyn J. Adamski, Amanda Koire, Lauren See, Chun-An Chen, Christian P. Schaaf, Jill A. Rosenfeld, Jessica A. Panzer, Ute Moog, Shuang Hao, Ann Bye, Edwin P. Kirk, Pawel Stankiewicz, Amy M. Breman, Arran McBride, Tejaswi Kandula, Holly A. Dubbs, Rebecca Macintosh, Michael Cardamone, Ying Zhu, Kevin Ying, Kerith-Rae Dias, Megan T. Cho, Lindsay B. Henderson, Berivan Baskin, Paula Morris, Jiang Tao, Mark J. Cowley, Marcel E. Dinger, Tony Roscioli, Oana Caluseriu, Oksana Suchowersky, Rani K. Sachdev, Olivier Lichtarge, Jianrong Tang, Kym M. Boycott, J. Lloyd Holder, Jr., and Huda Y. Zoghbi |
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| 520 | |a Certain mutations can cause proteins to accumulate in neurons, leading to neurodegeneration. We recently showed, however, that upregulation of a wild-type protein, Ataxin1, caused by haploinsufficiency of its repressor, the RNA-binding protein Pumilio1 (PUM1), also causes neurodegeneration in mice. We therefore searched for human patients with PUM1 mutations. We identified eleven individuals with either PUM1 deletions or de novo missense variants who suffer a developmental syndrome (Pumilio1-associated developmental disability, ataxia, and seizure; PADDAS). We also identified a milder missense mutation in a family with adult-onset ataxia with incomplete penetrance (Pumilio1-related cerebellar ataxia, PRCA). Studies in patient-derived cells revealed that the missense mutations reduced PUM1 protein levels by ∼25% in the adult-onset cases and by ∼50% in the infantile-onset cases; levels of known PUM1 targets increased accordingly. Changes in protein levels thus track with phenotypic severity, and identifying posttranscriptional modulators of protein expression should identify new candidate disease genes. | ||
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| 650 | 4 | |a intellectual disability | |
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