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Updated: Aug 29, 2025

Drug Repurposing Hypothesis Generation Using the "RE:fine Drugs" System
Published on: December 11, 2016
DRviaSPCN: a software package for drug repurposing in cancer via a subpathway crosstalk network
Jiashuo Wu1, Xiangmei Li1, Qian Wang1
1College of Bioinformatics Science and Technology, Harbin Medical University, Harbin 150081, China.
Summary:
Drug repurposing is an approach used to discover new indications for existing drugs. Recently, several computational approaches have been developed for drug repurposing in cancer. Nevertheless, no approaches have reported a systematic analysis of pathway crosstalk. Pathway crosstalk, which refers to the phenomenon of interaction or cooperation between pathways, is a critical aspect of tumor pathways that allows cancer cells to survive and acquire resistance to drug therapy. Here, we innovatively developed a system biology R-based software package, DRviaSPCN, to repurpose drugs for cancer via a subpathway (SP) crosstalk network. This package provides a novel approach to prioritize cancer candidate drugs by considering drug-induced SPs and their crosstalk effects. The operation modes mainly include construction of the SP network and calculation of the centrality scores of SPs to reflect the influence of SP crosstalk, calculation of enrichment scores of drug- and disease-induced dysfunctional SPs and weighted them by the centrality scores of SPs, evaluation of the drug-disease reverse association at the weighted SP level, identification of cancer candidate drugs and visualization of the results. Its capabilities enable DRviaSPCN to find cancer candidate drugs, which will complement the recent tools which did not consider crosstalk among pathways/SPs. DRviaSPCN may help to facilitate the development of drug discovery.
Availability And Implementation:
The package is implemented in R and available under GPL-2 license from the CRAN website (https://CRAN.R-project.org/package=DRviaSPCN).
Supplementary Information:
Supplementary data are available at Bioinformatics online.
Insights
This study introduces DRviaSPCN, an R package for cancer drug repurposing by analyzing subpathway crosstalk networks. It prioritizes candidate drugs by integrating drug-induced subpathways and their crosstalk effects, aiding drug discovery.
Area of Science:
- Computational biology
- Systems biology
- Pharmacology
Background:
- Drug repurposing accelerates the discovery of new cancer treatments.
- Existing computational methods often overlook pathway crosstalk, a key factor in cancer cell survival and drug resistance.
Purpose of the Study:
- To develop a novel computational approach for cancer drug repurposing.
- To systematically analyze pathway crosstalk for identifying new drug indications.
Main Methods:
- Developed DRviaSPCN, an R-based software package utilizing a subpathway (SP) crosstalk network.
- Calculated SP centrality scores to quantify crosstalk influence.
- Assessed drug-disease associations by integrating drug- and disease-induced SPs, weighted by centrality scores.
Main Results:
- DRviaSPCN prioritizes cancer candidate drugs by considering drug-induced SPs and their crosstalk effects.
- The software provides a novel method for evaluating drug-disease reverse association at the weighted SP level.
- Identified potential cancer drugs by analyzing subpathway crosstalk networks.
Conclusions:
- DRviaSPCN offers a unique approach to cancer drug repurposing by incorporating pathway crosstalk analysis.
- This tool complements existing methods by addressing the critical aspect of pathway interactions.
- DRviaSPCN has the potential to facilitate and accelerate cancer drug discovery efforts.
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