期刊
ACTA NEUROPATHOLOGICA
卷 137, 期 1, 页码 1-26出版社
SPRINGER
DOI: 10.1007/s00401-018-1921-0
关键词
C9orf72; Frontotemporal dementia (FTD); Amyotrophic lateral sclerosis (ALS); Dipeptide repeat proteins; RNA foci; TAR DNA binding protein of 43kDa (TDP-43)
资金
- NIH [AG023501, AG019724, AG033017]
- Bluefield Project
- Tau Consortium
What are the most important and treatable pathogenic mechanisms in C9orf72-FTD/ALS? Model-based efforts to address this question are forging ahead at a blistering pace, often with conflicting results. But what does the human neuropathological literature reveal? Here, we provide a critical review of the human studies to date, seeking to highlight key gaps or uncertainties in our knowledge. First, we engage the C9orf72-specific mechanisms, including C9orf72 haploinsufficiency, repeat RNA foci, and dipeptide repeat protein inclusions. We then turn to some of the most prominent C9orf72-associated features, such as TDP-43 loss-of-function, TDP-43 aggregation, and nuclear transport defects. Finally, we review potential disease-modifying epigenetic and genetic factors and the natural history of the disease across the lifespan. Throughout, we emphasize the importance of anatomical precision when studying how candidate mechanisms relate to neuronal, regional, and behavioral findings. We further highlight methodological approaches that may help address lingering knowledge gaps and uncertainties, as well as other logical next steps for the field. We conclude that anatomically oriented human neuropathological studies have a critical role to play in guiding this fast-moving field toward effective new therapies.
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