Cited by 130Gene Regulatory Network AnalysisSingle-cell and spatial transcriptomicsBioinformatics and Genomic Networks

Network inference with Granger causality ensembles on single-cell transcriptomics

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Deshpande, Atul, Chu, Li-Fang, Stewart, Ron, Gitter, Anthony·2022·Cell Reports

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Abstract

Cellular gene expression changes throughout a dynamic biological process, such as differentiation. Pseudotimes estimate cells' progress along a dynamic process based on their individual gene expression states. Ordering the expression data by pseudotime provides information about the underlying regulator-gene interactions. Because the pseudotime distribution is not uniform, many standard mathematical methods are inapplicable for analyzing the ordered gene expression states. Here we present single-cell inference of networks using Granger ensembles (SINGE), an algorithm for gene regulatory network inference from ordered single-cell gene expression data. SINGE uses kernel-based Granger causality regression to smooth irregular pseudotimes and missing expression values. It aggregates predictions from an ensemble of regression analyses to compile a ranked list of candidate interactions between transcriptional regulators and target genes. In two mouse embryonic stem cell differentiation datasets, SINGE outperforms other contemporary algorithms. However, a more detailed examination reveals caveats about poor performance for individual regulators and uninformative pseudotimes.

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Authors
Deshpande, A., Chu, L.-F., Stewart, R., & Gitter, A.
Affiliations
  • University of Wisconsin–Madison (US)
  • Morgridge Institute for Research (US)
Corresponding author
Gitter, Anthony
Venue
Cell Reports
Publisher
Elsevier BV
Published
2022-02
Volume
38
Issue
6
Pages
110333
ISSN
2211-1247 (ISSN-L)
OpenAlex
W4210881488
Cited by
130
References
141
Citations by year
2026: 12 · 2025: 24 · 2024: 24 · 2023: 36 · 2022: 14 · 2021: 10 · 2020: 9 · 2019: 1
FWCI
8.08
Type
journal article
Language
en
Open access
Locations
  • Cell Reports (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • National Science Foundation (CAREER, 1553206, 1148698)
  • U.S. Department of Energy
  • Wisconsin Alumni Research Foundation
  • National Institutes of Health (UH3TR000506, NIH P50, DE026787)
  • Office of Science
  • National Heart, Lung, and Blood Institute (U01HL099773)
  • National Cancer Institute (P50CA278595)
  • National Institute of Dental and Craniofacial Research (P50DE026787)
  • Division of Graduate Education
  • National Center for Advancing Translational Sciences
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gene Regulatory Network Analysis
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Single-cell and spatial transcriptomics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bioinformatics and Genomic Networks
Keywords
gene regulatory network inference, Granger causality, single-cell transcriptomics, pseudotime, kernel regression, ensemble regression, transcription factors, mouse embryonic stem cell differentiation
MeSH terms
Algorithms, Animals, Cell Differentiation, Software, Computational Biology, Gene Expression Profiling, Mice, Gene Regulatory Networks, Transcriptome

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