Cited by 424Bioinformatics and Genomic NetworksBiomedical Text Mining and OntologiesGene expression and cancer classification

Systematic survey reveals general applicability of "guilt-by-association" within gene coexpression networks

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Wolfe, Cecily J, Kohane, Isaac S, Butte, Atul J·2005·BMC Bioinformatics

Abstract

Background: Biological processes are carried out by coordinated modules of interacting molecules. As clustering methods demonstrate that genes with similar expression display increased likelihood of being associated with a common functional module, networks of coexpressed genes provide one framework for assigning gene function. This has informed the guilt-by-association (GBA) heuristic, widely invoked in functional genomics. Yet although the idea of GBA is accepted, the breadth of GBA applicability is uncertain. Results: We developed methods to systematically explore the breadth of GBA across a large and varied corpus of expression data to answer the following question: To what extent is the GBA heuristic broadly applicable to the transcriptome and conversely how broadly is GBA captured by a priori knowledge represented in the Gene Ontology (GO)? Our study provides an investigation of the functional organization of five coexpression networks using data from three mammalian organisms. Our method calculates a probabilistic score between each gene and each Gene Ontology category that reflects coexpression enrichment of a GO module. For each GO category we use Receiver Operating Curves to assess whether these probabilistic scores reflect GBA. This methodology applied to five different coexpression networks demonstrates that the signature of guilt-by-association is ubiquitous and reproducible and that the GBA heuristic is broadly applicable across the population of nine hundred Gene Ontology categories. We also demonstrate the existence of highly reproducible patterns of coexpression between some pairs of GO categories. Conclusion: We conclude that GBA has universal value and that transcriptional control may be more modular than previously realized. Our analyses also suggest that methodologies combining coexpression measurements across multiple genes in a biologically-defined module can aid in characterizing gene function or in characterizing whether pairs of functions operate together.

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  • Gene products involved in an unknown cell type or biological process can be annotated based on their proximity to marker genes of known function.

    “Thus, gene products that are involved in an unknown cell type or biological process can be annotated on the basis of their proximity to marker genes of known function (‘guilt by association’)26,33,34.”

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Authors
Wolfe, C. J., Kohane, I. S., & Butte, A. J.
Affiliations
Harvard University (US)
Corresponding author
Wolfe, Cecily J
Venue
BMC Bioinformatics
Published
2005-09-14
Volume
6
Issue
1
Pages
227-227
ISSN
1471-2105 (ISSN-L)
OpenAlex
W2159767718
Cited by
422
References
24
Citations by year
2026: 5 · 2025: 10 · 2024: 12 · 2023: 14 · 2022: 28 · 2021: 39 · 2020: 40 · 2019: 29 · 2018: 24 · 2017: 19 · 2016: 17 · 2015: 20 · 2014: 18 · 2013: 20 · 2012: 20
FWCI
5.90
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • BMC Bioinformatics (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Digital Access to Scholarship at Harvard (DASH) (Harvard University) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
  • Pediatric Endocrine Society
  • National Institutes of Health (LM008748)
  • National Institute of Diabetes and Digestive and Kidney Diseases (R01 DK62948, K12DK63696, K12DK063696, R01DK062948)
  • U.S. National Library of Medicine (U54LM008748, 5T15 LM07092, 2 TA5 LM 07092-11, T15LM007092)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bioinformatics and Genomic Networks
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Biomedical Text Mining and Ontologies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gene expression and cancer classification
Keywords
guilt by association, gene co-expression network, Gene Ontology, gene function prediction, functional modules, probabilistic scoring, transcriptome, transcriptional regulation
MeSH terms
Animals, Bone Development, Feeding Behavior, Humans, Phylogeny, Probability, ROC Curve, Species Specificity, Reproducibility of Results, Receptors, Neuropeptide, Oligonucleotide Array Sequence Analysis, Gene Expression Profiling, Synteny, Mice, Rats

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