Cited by 493Single-cell and spatial transcriptomicsGene expression and cancer classificationBioinformatics and Genomic Networks

Brain Cell Type Specific Gene Expression and Co-expression Network Architectures

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McKenzie, Andrew T., Wang, Minghui, Hauberg, Mads E., Fullard, John F., Kozlenkov, Alexey, Keenan, Alexandra, Hurd, Yasmin L., Dracheva, Stella +3 more·2018·Scientific Reports

Abstract

Elucidating brain cell type specific gene expression patterns is critical towards a better understanding of how cell-cell communications may influence brain functions and dysfunctions. We set out to compare and contrast five human and murine cell type-specific transcriptome-wide RNA expression data sets that were generated within the past several years. We defined three measures of brain cell type-relative expression including specificity, enrichment, and absolute expression and identified corresponding consensus brain cell “signatures,” which were well conserved across data sets. We validated that the relative expression of top cell type markers are associated with proxies for cell type proportions in bulk RNA expression data from postmortem human brain samples. We further validated novel marker genes using an orthogonal ATAC-seq dataset. We performed multiscale coexpression network analysis of the single cell data sets and identified robust cell-specific gene modules. To facilitate the use of the cell type-specific genes for cell type proportion estimation and deconvolution from bulk brain gene expression data, we developed an R package, BRETIGEA. In summary, we identified a set of novel brain cell consensus signatures and robust networks from the integration of multiple datasets and therefore transcend limitations related to technical issues characteristic of each individual study.

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  • Cell clusters were annotated manually using marker genes conserved between both conditions as astrocytes, microglia, neurons, endothelial cells, ependymal cells, and mixed glia.

    “The cell clusters were annotated manually using marker genes that were conserved between both conditions as astrocytes, microglia, neurons, endothelial cells, ependymal cells, and mixed glia (Supplementary Data 1) (Arneson et al., 2018;McKenzie et al., 2018).”

    From Single-cell resolution analysis of the crosstalk between chemogenically activated astrocytes and microglia (2020) · cites this paper as McKenzie et al., 2018

    The Discussion (page unavailable) says the paper annotated marker genes for astrocytes, endothelial cells, microglia, neurons, oligodendrocytes, and OPCs. It therefore supports using its markers for four of the six cell labels in the citing sentence, but does not supply markers for ependymal cells or mixed glia. The manual annotation and conservation between conditions describe the citing authors’ procedure, not a finding established by this source. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • Canonical CNS cell type markers were compiled from previous studies66-69.

    “Canonical CNS cell type markers were compiled from previous studies66–69.”
  • Cell-type proportions of bulk tissue RNA-seq data were estimated by performing cell-type deconvolution on each sample using brain cell-type marker signatures provided by the BRETIGEA R package.

    “To estimate the cell-type proportion of bulk tissue RNA-seq data used in this study, we perform a cell-type deconvolution on each sample using the brain cell–type marker signatures provided by the BRETIGEA R package (26).”
  • All cell clusters were annotated manually based on marker genes that were conserved between the saccharin group and the CNO group and gene lists present in literature.

    “All cell clusters were annotated manually based on marker genes that were conserved between the saccharin group and the CNO group and gene lists present in literature (Arneson et al., 2018;McKenzie et al., 2018).”

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Authors
McKenzie, A. T., Wang, M., Hauberg, M. E., Fullard, J. F., Kozlenkov, A., Keenan, A., Hurd, Y. L., Dracheva, S., Casaccia, P., Roussos, P., & Zhang, B.
Affiliations
  • Icahn School of Medicine at Mount Sinai (US)
  • Aarhus University (DK)
  • James J. Peters VA Medical Center (US)
  • City University of New York (US)
Corresponding author
Zhang, Bin
Venue
Scientific Reports
Published
2018-06-11
Volume
8
Issue
1
Pages
8868-8868
ISSN
2045-2322 (ISSN-L)
OpenAlex
W2806989085
Cited by
481
References
59
Citations by year
2026: 41 · 2025: 59 · 2024: 84 · 2023: 70 · 2022: 60 · 2021: 78 · 2020: 56 · 2019: 28 · 2018: 5
FWCI
15.03
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Scopus (Elsevier) (submittedVersion)
Funders
  • U.S. Department of Veterans Affairs (I01 BX002876, I01BX002395, I01 BX003625)
  • Lundbeckfonden (R155-2014-1724, R248‐2017‐2003)
  • National Institutes of Health
  • National Institute on Aging (R01AG057907, F30AG052261, R01AG046170, U01AG046170, RF1AG054014, RF1AG057440, U01AG052411, R01AG050986)
  • National Institute of Mental Health (R01MH109677)
  • National Institute on Drug Abuse (P01DA008227)
  • National Institute of Neurological Disorders and Stroke (R37NS042925, R01NS052738)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Single-cell and spatial transcriptomics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gene expression and cancer classification
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bioinformatics and Genomic Networks
Keywords
cell type markers, co-expression network, single-cell transcriptomics, cell type deconvolution, cell type signatures, intercellular communication, postmortem brain
MeSH terms
Animals, Female, Genetic Markers, Humans, Male, Mice, Inbred C57BL, Neuroglia, Neurons, Temporal Lobe, Gene Expression Profiling, Databases, Nucleic Acid, Endothelial Cells, Mice, Gene Regulatory Networks, Single-Cell Analysis, Transcriptome, Datasets as Topic

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