Cited by 137Bioinformatics and Genomic NetworksComputational Drug Discovery MethodsBiomedical Text Mining and Ontologies

Drug target prioritization by perturbed gene expression and network information

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Isik, Zerrin, Baldow, Christoph, Cannistraci, Carlo Vittorio, Schroeder, Michael·2015·Scientific Reports

Abstract

Drugs bind to their target proteins, which interact with downstream effectors and ultimately perturb the transcriptome of a cancer cell. These perturbations reveal information about their source, i.e., drugs' targets. Here, we investigate whether these perturbations and protein interaction networks can uncover drug targets and key pathways. We performed the first systematic analysis of over 500 drugs from the Connectivity Map. First, we show that the gene expression of drug targets is usually not significantly affected by the drug perturbation. Hence, expression changes after drug treatment on their own are not sufficient to identify drug targets. However, ranking of candidate drug targets by network topological measures prioritizes the targets. We introduce a novel measure, local radiality, which combines perturbed genes and functional interaction network information. The new measure outperforms other methods in target prioritization and proposes cancer-specific pathways from drugs to affected genes for the first time. Local radiality identifies more diverse targets with fewer neighbors and possibly less side effects.

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  • The degree of toxicity would positively correlate with the degree of connectivity of the genetic network, because the number of affected genes would increase explosively as the complexity of the network increases.

    “the degree of toxicity would positively correlate with the degree of connectivity of the genetic network, because the number of affected genes would increase explosively as the complexity of the network increases [137,138].”

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Authors
Isik, Z., Baldow, C., Cannistraci, C. V., & Schroeder, M.
Affiliations
  • Technische Universität Dresden (DE)
  • Biotechnologisches Zentrum (DE)
Corresponding author
Schroeder, Michael
Venue
Scientific Reports
Published
2015-11-30
Volume
5
Issue
1
Pages
17417-17417
ISSN
2045-2322 (ISSN-L)
OpenAlex
W2410743230
Cited by
135
References
40
Citations by year
2026: 3 · 2025: 7 · 2024: 11 · 2023: 23 · 2022: 11 · 2021: 12 · 2020: 22 · 2019: 16 · 2018: 9 · 2017: 15 · 2016: 6
FWCI
4.48
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • Deutsche Forschungsgemeinschaft
  • Technische Universität Dresden
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bioinformatics and Genomic Networks
  • Physical Sciences › Computer Science › Computational Theory and Mathematics › Computational Drug Discovery Methods
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Biomedical Text Mining and Ontologies
Keywords
drug target prioritization, Connectivity Map, drug-induced perturbation, gene expression, protein-protein interaction network, cancer pathways, drug repurposing, adverse drug reactions
MeSH terms
Algorithms, Cell Line, Gene Expression Regulation, Humans, ROC Curve, Reproducibility of Results, Signal Transduction, Computational Biology, Gene Expression Profiling, Gene Regulatory Networks, Drug Discovery, Protein Interaction Maps

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