Abstract
We present a consensus atlas of the human brain transcriptome in Alzheimer's disease (AD), based on meta-analysis of differential gene expression in 2,114 postmortem samples. We discover 30 brain coexpression modules from seven regions as the major source of AD transcriptional perturbations. We next examine overlap with 251 brain differentially expressed gene sets from mouse models of AD and other neurodegenerative disorders. Human-mouse overlaps highlight responses to amyloid versus tau pathology and reveal age- and sex-dependent expression signatures for disease progression. Human coexpression modules enriched for neuronal and/or microglial genes broadly overlap with mouse models of AD, Huntington's disease, amyotrophic lateral sclerosis, and aging. Other human coexpression modules, including those implicated in proteostasis, are not activated in AD models but rather following other, unexpected genetic manipulations. Our results comprise a cross-species resource, highlighting transcriptional networks altered by human brain pathophysiology and identifying correspondences with mouse models for AD preclinical studies.
Original language | English (US) |
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Article number | 107908 |
Journal | Cell Reports |
Volume | 32 |
Issue number | 2 |
DOIs | |
State | Published - Jul 14 2020 |
Keywords
- Alzheimer's disease
- RNA-seq
- aging
- coexpression analysis
- differential expression analysis
- meta-analysis
- mouse models
- neuroinflammation
- transcriptome
ASJC Scopus subject areas
- General Biochemistry, Genetics and Molecular Biology