Cited by 69Bioinformatics and Genomic NetworksGene Regulatory Network AnalysisGene expression and cancer classification

Multi-tissue Analysis of Co-expression Networks by Higher-Order Generalized Singular Value Decomposition Identifies Functionally Coherent Transcriptional Modules

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Xiao, Xiaolin, Moreno-Moral, Aida, Rotival, Maxime, Bottolo, Leonardo, Petretto, Enrico·2014·PLoS Genetics

Abstract

Recent high-throughput efforts such as ENCODE have generated a large body of genome-scale transcriptional data in multiple conditions (e.g., cell-types and disease states). Leveraging these data is especially important for network-based approaches to human disease, for instance to identify coherent transcriptional modules (subnetworks) that can inform functional disease mechanisms and pathological pathways. Yet, genome-scale network analysis across conditions is significantly hampered by the paucity of robust and computationally-efficient methods. Building on the Higher-Order Generalized Singular Value Decomposition, we introduce a new algorithmic approach for efficient, parameter-free and reproducible identification of network-modules simultaneously across multiple conditions. Our method can accommodate weighted (and unweighted) networks of any size and can similarly use co-expression or raw gene expression input data, without hinging upon the definition and stability of the correlation used to assess gene co-expression. In simulation studies, we demonstrated distinctive advantages of our method over existing methods, which was able to recover accurately both common and condition-specific network-modules without entailing ad-hoc input parameters as required by other approaches. We applied our method to genome-scale and multi-tissue transcriptomic datasets from rats (microarray-based) and humans (mRNA-sequencing-based) and identified several common and tissue-specific subnetworks with functional significance, which were not detected by other methods. In humans we recapitulated the crosstalk between cell-cycle progression and cell-extracellular matrix interactions processes in ventricular zones during neocortex expansion and further, we uncovered pathways related to development of later cognitive functions in the cortical plate of the developing brain which were previously unappreciated. Analyses of seven rat tissues identified a multi-tissue subnetwork of co-expressed heat shock protein (Hsp) and cardiomyopathy genes (Bag3, Cryab, Kras, Emd, Plec), which was significantly replicated using separate failing heart and liver gene expression datasets in humans, thus revealing a conserved functional role for Hsp genes in cardiovascular disease.

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Authors
Xiao, X., Moreno-Moral, A., Rotival, M., Bottolo, L., & Petretto, E.
Affiliations
Imperial College London (GB)
Corresponding author
Petretto, Enrico
Venue
PLoS Genetics
Published
2014-01-02
Volume
10
Issue
1
Pages
e1004006
ISSN
  • 1553-7390 (ISSN-L)
  • 1553-7404
OpenAlex
W2030813272
Cited by
63
References
66
Citations by year
2026: 1 · 2025: 3 · 2024: 5 · 2023: 3 · 2022: 3 · 2021: 6 · 2020: 3 · 2019: 7 · 2018: 4 · 2017: 7 · 2016: 11 · 2015: 5 · 2014: 5
FWCI
3.81
Type
journal article
Language
en
Open access
Locations
  • PLoS Genetics (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • National University of Singapore (submittedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Figshare (submittedVersion, cc-by)
  • Spiral (Imperial College London) (submittedVersion, other-oa)
Funders
  • British Heart Foundation (FS/11/25/28740)
  • European Commission (241504)
  • Medical Research Council (FP7/20072013)
  • Engineering and Physical Sciences Research Council (Platform grant EP/I019111/1, EP/I019111/1, FP7/2007–2013, Mathematics Platform grant EP/I019111/1)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bioinformatics and Genomic Networks
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gene Regulatory Network Analysis
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gene expression and cancer classification
Keywords
gene co-expression network, transcriptional modules, multi-tissue transcriptomics, network module identification, cell cycle progression, extracellular matrix, neocortex expansion, heat shock proteins, cardiomyopathy genes, cardiovascular disease
MeSH terms
Algorithms, Animals, Humans, Cardiomyopathies, Organ Specificity, Transcription, Genetic, Signal Transduction, Gene Expression, Genome, Human, Cell Cycle Proteins, Gene Expression Profiling, Rats, Gene Regulatory Networks

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