Cited by 144Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

Conserved brain myelination networks are altered in Alzheimer’s and other neurodegenerative diseases

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Allen, Mariet, Wang, Xue, Burgess, Jeremy D., Watzlawik, Jens, Serie, Daniel J., Younkin, Curtis S., Nguyen, Thuy, Malphrus, Kimberly G. +23 more·2018·Alzheimer's & Dementia

Abstract

Introduction: Comparative transcriptome analyses in Alzheimer's disease (AD) and other neurodegenerative proteinopathies can uncover both shared and distinct disease pathways. Methods: We analyzed 940 brain transcriptomes including patients with AD, progressive supranuclear palsy (PSP; a primary tauopathy), and control subjects. Results: We 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. Discussion: Downregulation 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.

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Crossref · 10.1016/j.jalz.2017.09.012

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  • RNA sequencing of human postmortem brain tissue reinforces the importance of microglial and inflammatory mechanisms in AD pathogenesis, among other pathways.

    “Results from RNA sequencing (RNA-seq) of human postmortem brain tissue further reinforce the importance of microglial and inflammatory mechanisms in AD pathogenesis, among other pathways (Allen et al., 2018; Conway et al., 2018; McKenzie et al., 2017; Patrick et al., 2017; Wang et al., 2016, 2019; Zhang et al., 2013).”

    From Meta-Analysis of the Alzheimer’s Disease Human Brain Transcriptome and Functional Dissection in Mouse Models (2020) · cites this paper as Allen et al., 2018

    Methods §2.1 confirms that the study used RNA-seq on human postmortem brain tissue, and the Discussion reports modules enriched in microglial transcripts. But the paper’s principal RNA-seq finding concerns myelination networks; it does not establish that those results reinforce inflammatory mechanisms in AD pathogenesis. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • Gene sets from prior AD-associated oligodendrocyte-enriched coexpression modules significantly overlapped with consensus cluster D.

    “independent analyses of RNA-seq from the Mayo and MSSM cohorts previously identified AD-associated coexpression modules enriched for oligodendrocyte expression signatures (Allen et al., 2018; McKenzie et al., 2017), and these gene sets significantly overlapped with consensus cluster D (Figure 1C).”

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  1. [29]Carrasquillo MM Zou F Pankratz VS Wilcox SL Ma L Walker LP Genetic variation in PCDH11X is associated with susceptibility to late-onset Alzheimer’s disease Nature genetics 2009 41 192 8 19136949 PMC2873177

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Authors
Allen, M., Wang, X., Burgess, J. D., Watzlawik, J., Serie, D. J., Younkin, C. S., Nguyen, T., Malphrus, K. G., Lincoln, S., Carrasquillo, M. M., Ho, C., Chakrabarty, P., Strickland, S., Murray, M. E., Swarup, V., Geschwind, D. H., Seyfried, N. T., Dammer, E. B., Lah, J. J., Levey, A. I., Golde, T. E., Funk, C., Li, H., Price, N. D., Petersen, R. C., Graff‐Radford, N. R., Younkin, S. G., Dickson, D. W., Crook, J. R., Asmann, Y. W., & Ertekin‐Taner, N.
Affiliations
  • Mayo Clinic (US)
  • University of Florida (US)
  • University of California, Los Angeles (US)
  • Emory University (US)
  • Institute for Systems Biology (US)
Corresponding author
Ertekin‐Taner, Nilüfer
Venue
Alzheimer's & Dementia
Publisher
Wiley
Published
2017-10-26
Volume
14
Issue
3
Pages
352-366
ISSN
  • 1552-5260 (ISSN-L)
  • 1552-5279
OpenAlex
W2765616742
Cited by
143
References
47
Citations by year
2026: 10 · 2025: 10 · 2024: 15 · 2023: 9 · 2022: 26 · 2021: 25 · 2020: 29 · 2019: 12 · 2018: 6
FWCI
9.51
Type
journal article
Language
en
Open access
Locations
  • Alzheimer s & Dementia (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • Arizona Biomedical Research Commission (4001, 0011, 05-901, 1001)
  • Arizona Department of Health Services (211002)
  • National Institute on Aging (P30 AG19610, R01 AG032990, RF AG051504, U01 AG046139, P50 AG0016574, U01 AG006786)
  • National Institute of Neurological Disorders and Stroke (U24 NS072026, R01 NS080820)
  • Center for Individualized Medicine, Mayo Clinic
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
Alzheimer's disease, progressive supranuclear palsy
MeSH terms
Alzheimer Disease, Brain, Female, Gene Expression Regulation, Humans, Male, Myelin Sheath, Neurons, Supranuclear Palsy, Progressive, Cohort Studies, Computational Biology, Genetic Predisposition to Disease, Transcriptome

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