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Updated: Feb 17, 2026

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Published on: October 11, 2019
The OncoPPi Portal: an integrative resource to explore and prioritize protein-protein interactions for cancer target
Andrei A Ivanov1,2, Brian Revennaugh1, Lauren Rusnak1
1Department of Pharmacology and Emory Chemical Biology Discovery Center, Emory University School of Medicine.
Motivation:
As cancer genomics initiatives move toward comprehensive identification of genetic alterations in cancer, attention is now turning to understanding how interactions among these genes lead to the acquisition of tumor hallmarks. Emerging pharmacological and clinical data suggest a highly promising role of cancer-specific protein-protein interactions (PPIs) as druggable cancer targets. However, large-scale experimental identification of cancer-related PPIs remains challenging, and currently available resources to explore oncogenic PPI networks are limited.
Results:
Recently, we have developed a PPI high-throughput screening platform to detect PPIs between cancer-associated proteins in the context of cancer cells. Here, we present the OncoPPi Portal, an interactive web resource that allows investigators to access, manipulate and interpret a high-quality cancer-focused network of PPIs experimentally detected in cancer cell lines. To facilitate prioritization of PPIs for further biological studies, this resource combines network connectivity analysis, mutual exclusivity analysis of genomic alterations, cellular co-localization of interacting proteins and domain-domain interactions. Estimates of PPI essentiality allow users to evaluate the functional impact of PPI disruption on cancer cell proliferation. Furthermore, connecting the OncoPPi network with the approved drugs and compounds in clinical trials enables discovery of new tumor dependencies to inform strategies to interrogate undruggable targets like tumor suppressors. The OncoPPi Portal serves as a resource for the cancer research community to facilitate discovery of cancer targets and therapeutic development.
Availability And Implementation:
The OncoPPi Portal is available at http://oncoppi.emory.edu.
Contact:
andrey.ivanov@emory.edu or hfu@emory.edu.
Insights
The OncoPPi Portal offers a new resource for cancer research, providing experimentally detected protein-protein interactions (PPIs) to identify novel drug targets and advance cancer therapies.
Area of Science:
- Oncology
- Bioinformatics
- Drug Discovery
Background:
- Cancer genomics aims to identify genetic alterations driving tumor development.
- Cancer-specific protein-protein interactions (PPIs) are promising druggable targets.
- Limited resources exist for exploring oncogenic PPI networks.
Purpose of the Study:
- To present the OncoPPi Portal, an interactive web resource for cancer-focused PPIs.
- To facilitate the prioritization of PPIs for biological studies and drug development.
- To enable the discovery of new tumor dependencies and therapeutic strategies.
Main Methods:
- Developed a high-throughput screening platform for detecting cancer-associated PPIs in cancer cells.
- Integrated network connectivity, genomic alteration mutual exclusivity, and cellular co-localization analyses.
- Estimated PPI essentiality to assess the impact of PPI disruption on cancer cell proliferation.
Main Results:
- The OncoPPi Portal provides access to a high-quality, cancer-focused network of experimentally detected PPIs.
- The resource facilitates the prioritization of PPIs through integrated analyses.
- Connecting the OncoPPi network with drug information aids in identifying new therapeutic targets.
Conclusions:
- The OncoPPi Portal serves as a valuable resource for the cancer research community.
- It supports the discovery of novel cancer targets and aids in therapeutic development.
- The portal facilitates the interrogation of previously undruggable targets.
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