Cited by 1,657Alzheimer's disease research and treatmentsBioinformatics and Genomic NetworksNeuroinflammation and Neurodegeneration Mechanisms

Integrated Systems Approach Identifies Genetic Nodes and Networks in Late-Onset Alzheimer’s Disease

Open access
Zhang, Bin, Gaiteri, Chris, Bodea, Liviu-Gabriel, Wang, Zhi, McElwee, Joshua, Podtelezhnikov, Alexei A., Zhang, Chunsheng, Xie, Tao +22 more·2013·Cell

Abstract

The genetics of complex disease produce alterations in the molecular interactions of cellular pathways whose collective effect may become clear through the organized structure of molecular networks. To characterize molecular systems associated with late-onset Alzheimer's disease (LOAD), we constructed gene-regulatory networks in 1,647 postmortem brain tissues from LOAD patients and nondemented subjects, and we demonstrate that LOAD reconfigures specific portions of the molecular interaction structure. Through an integrative network-based approach, we rank-ordered these network structures for relevance to LOAD pathology, highlighting an immune- and microglia-specific module that is dominated by genes involved in pathogen phagocytosis, contains TYROBP as a key regulator, and is upregulated in LOAD. Mouse microglia cells overexpressing intact or truncated TYROBP revealed expression changes that significantly overlapped the human brain TYROBP network. Thus the causal network structure is a useful predictor of response to gene perturbations and presents a framework to test models of disease mechanisms underlying LOAD.

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Integrity signals

Registry

Crossref · 10.1016/j.cell.2013.03.030

Cites

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  • The findings strengthen the growing evidence linking AD to a network of genes expressed in microglia.

    “These results reinforce the emerging genetic and epigenetic association between AD and a network of microglial expressed genes2,5,17–21”

    From A common haplotype lowers PU.1 expression in myeloid cells and delays onset of Alzheimer's disease (2017) · cites this paper as [18]

    The Results section, “Highlighting the Microglia Pathway with TYROBP as Causal Regulator” (page unavailable), links an immune/microglia gene network to late-onset AD and describes convergent genetic evidence. The citing sentence also attributes an epigenetic association to the citation group, but the passages in our copy do not establish that component. (LLM, conf=0.83)

    Experimental — accuracy not yet measured
  • RNA-Seq offers an unbiased view of known and novel transcripts and has identified candidate hub genes within networks linked to lipid metabolism and innate immunity.

    “RNA-Seq offers an unbiased view of known and novel transcripts and has identified candidate “hub” genes within networks linked to lipid metabolism and innate immunity122,130,159,160.”

    From Artificial intelligence-driven multi-omics approaches in Alzheimer's disease: Progress, challenges, and future directions (2025) · cites this paper as [130]

    The Results section, “Highlighting the Microglia Pathway with TYROBP as Causal Regulator” (page unavailable), identifies TYROBP and other key regulators in an immune/microglia network. But “Structure of Causal Networks Guides Differential Expression” describes RNA-Seq as testing expression changes against a network inferred from human brain data, not as identifying those regulators. Our copy does not establish the claimed unbiased view of known and novel transcripts or identify hub genes in a lipid-metabolism network. (LLM, conf=0.85)

    Experimental — accuracy not yet measured
  • A robust linear regression model was applied for blood contamination correction.

    “Thus we applied a robust linear regression model for blood contamination correction [49].”

    From Integrated analysis of ultra-deep proteomes in cortex, cerebrospinal fluid and serum reveals a mitochondrial signature in Alzheimer’s disease (2020) · cites this paper as [49]

    The Results section, “Leveraging a Systems Approach to LOAD” (page unavailable), says the authors used robust linear regression for covariate corrections in gene-expression analyses. It does not identify blood contamination as a covariate or describe correcting for it. (LLM, conf=0.85)

    Experimental — accuracy not yet measured
  • Ctss, Fcer1g, Tyrobp, C1qa, and Cyba are primarily expressed in microglia and were identified in the immune/microglia module in LOAD patient brains.

    “Importantly, these genes are primarily expressed in microglia and identified in the immune/microglia module in LOAD patient brains (41).”

    From The effect of Abi3 locus deletion on the progression of Alzheimer’s disease-related pathologies (2023) · cites this paper as [41]

    In Results, “Highlighting the Microglia Pathway with TYROBP as Causal Regulator” (page unavailable), the paper identifies TYROBP and FCER1G in immune/microglia modules and says TYROBP is expressed in innate immune cells, including brain microglia. It names CTSC, not CTSS, among the shared regulators; the passages do not establish module membership or primarily microglial expression for CTSS, C1QA, and CYBA. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • TYROBP is the downstream signaling mediator of several microglial receptors implicated in AD, such as TREM2 and CD33.

    “Interestingly, it is also the downstream signaling mediator of several microglial receptors that are implicated in AD, such as TREM2 and CD33 (41, 48).”

    From The effect of Abi3 locus deletion on the progression of Alzheimer’s disease-related pathologies (2023) · cites this paper as [41]

    In Results, under “Highlighting the Microglia Pathway with TYROBP as Causal Regulator” (page not provided), the paper says TREM2 associates with and signals via TYROBP. It places CD33 in the same Alzheimer’s-associated gene network but does not say that CD33 signals through TYROBP. (LLM, conf=0.88)

    Experimental — accuracy not yet measured

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Authors
Zhang, B., Gaiteri, C., Bodea, L.-G., Wang, Z., McElwee, J., Podtelezhnikov, A. A., Zhang, C., Xie, T., Tran, L., Dobrin, R., Fluder, E., Clurman, B., Melquist, S., Narayanan, M., Suver, C., Shah, H., Mahajan, M., Gillis, T., Mysore, J., MacDonald, M. E., Lamb, J. R., Bennett, D. A., Molony, C., Stone, D. J., Gudnason, V., Myers, A. J., Schadt, E. E., Neumann, H., Zhu, J., & Emilsson, V.
Affiliations
  • Sage Bionetworks (US)
  • University of Bonn (DE)
  • Merck & Co., Inc., Rahway, NJ, USA (United States) (US)
  • Fred Hutch Cancer Center (US)
  • Icahn School of Medicine at Mount Sinai (US)
  • Massachusetts General Hospital (US)
  • Genomics Institute of the Novartis Research Foundation (US)
  • Rush University Medical Center (US)
  • University of Iceland (IS)
  • University of Miami (US)
Corresponding author
  • Zhang, Bin
  • Emilsson, Valur
Venue
Cell
Publisher
Elsevier BV
Published
2013-04
Volume
153
Issue
3
Pages
707-720
ISSN
0092-8674 (ISSN-L)
OpenAlex
W2033105784
Cited by
1,657
References
68
Citations by year
2026: 56 · 2025: 91 · 2024: 142 · 2023: 127 · 2022: 154 · 2021: 160 · 2020: 166 · 2019: 146 · 2018: 144 · 2017: 129 · 2016: 106 · 2015: 132 · 2014: 80 · 2013: 24
FWCI
79.38
Type
journal article
Language
en
Open access
Locations
  • Cell (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institute of Neurological Disorders and Stroke (NS39764)
  • National Institutes of Health (R01 AG11101, NS032765, P30 AG10161, R01 AG17917, R01 AG15819, R01 AG030146, R01 AG034504, K08 AG034290, 211002, P50-AG08671, 30 AG19610)
  • Leonard M. Miller School of Medicine
  • Medical Research Council
  • Alzheimer’s Research UK
  • Fondazione ART per la Ricerca sui Trapianti
  • Deutsche Forschungsgemeinschaft (KFO177, FOR1336, SFB704)
  • Higher Education Funding Council for England
  • Illinois Department of Public Health
  • BRACE
  • University of Miami
  • National Institute on Aging (05128)
  • National Institute of Mental Health (MH60451)
  • Arizona Biomedical Research Commission (1001, 0011, 05-901, 4001)
  • Internationale Stichting Alzheimer Onderzoek
  • Newcastle University
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bioinformatics and Genomic Networks
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
late-onset Alzheimer's disease, gene regulatory networks, molecular networks, postmortem brain, microglia, TYROBP, disease mechanisms
MeSH terms
Alzheimer Disease, Animals, Bayes Theorem, Brain, Humans, Membrane Proteins, Microglia, Adaptor Proteins, Signal Transducing, Mice, Gene Regulatory Networks

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