1. Conserved brain myelination networks are altered in Alzheimer's and other neurodegenerative diseases
- Author
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Allen, Mariet, Wang, Xue, Burgess, Jeremy D, Watzlawik, Jens, Serie, Daniel J, Younkin, Curtis S, Nguyen, Thuy, Malphrus, Kimberly G, Lincoln, Sarah, Carrasquillo, Minerva M, Ho, Charlotte, Chakrabarty, Paramita, Strickland, Samantha, Murray, Melissa E, Swarup, Vivek, Geschwind, Daniel H, Seyfried, Nicholas T, Dammer, Eric B, Lah, James J, Levey, Allan I, Golde, Todd E, Funk, Cory, Li, Hongdong, Price, Nathan D, Petersen, Ronald C, Graff‐Radford, Neill R, Younkin, Steven G, Dickson, Dennis W, Crook, Julia R, Asmann, Yan W, and Ertekin‐Taner, Nilüfer
- Subjects
Biomedical and Clinical Sciences ,Biological Psychology ,Clinical Sciences ,Neurosciences ,Psychology ,Aging ,Acquired Cognitive Impairment ,Dementia ,Alzheimer's Disease including Alzheimer's Disease Related Dementias (AD/ADRD) ,Brain Disorders ,Neurodegenerative ,Alzheimer's Disease ,2.1 Biological and endogenous factors ,Aetiology ,1.1 Normal biological development and functioning ,Underpinning research ,Neurological ,Alzheimer Disease ,Brain ,Cohort Studies ,Computational Biology ,Female ,Gene Expression Regulation ,Genetic Predisposition to Disease ,Humans ,Male ,Myelin Sheath ,Neurons ,Supranuclear Palsy ,Progressive ,Transcriptome ,Proteinopathies ,Alzheimer's disease ,Progressive supranuclear palsy ,Myelination ,Coexpression networks ,Temporal cortex ,Cerebellum ,Geriatrics ,Clinical sciences ,Biological psychology - Abstract
IntroductionComparative transcriptome analyses in Alzheimer's disease (AD) and other neurodegenerative proteinopathies can uncover both shared and distinct disease pathways.MethodsWe analyzed 940 brain transcriptomes including patients with AD, progressive supranuclear palsy (PSP; a primary tauopathy), and control subjects.ResultsWe identified transcriptional coexpression networks implicated in myelination, which were lower in PSP temporal cortex (TCX) compared with AD. Some of these associations were retained even after adjustments for brain cell population changes. These TCX myelination network structures were preserved in cerebellum but they were not differentially expressed in cerebellum between AD and PSP. Myelination networks were downregulated in both AD and PSP, when compared with control TCX samples.DiscussionDownregulation of myelination networks may underlie both PSP and AD pathophysiology, but may be more pronounced in PSP. These data also highlight conservation of transcriptional networks across brain regions and the influence of cell type changes on these networks.
- Published
- 2018