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Updated: May 22, 2026

Optogenetic Signaling Activation in Zebrafish Embryos
Published on: October 27, 2023
Linking proteins to signaling pathways for experiment design and evaluation
Illés J Farkas1, Adám Szántó-Várnagy, Tamás Korcsmáros
1Statistical and Biological Physics Research Group, Hungarian Academy of Sciences, Budapest, Hungary. fij@elte.hu
PathwayLinker is a new online tool that predicts unintended cellular signaling pathway effects from protein alterations. It integrates data to minimize manual research and aids in identifying novel signaling proteins.
Area of Science:
- Biochemistry
- Molecular Biology
- Bioinformatics
Background:
- Biomedical research frequently modifies protein functions, potentially causing unintended and non-specific effects on cellular signaling pathways.
- Understanding these off-target effects is crucial for accurate experimental interpretation and drug development.
Purpose of the Study:
- To introduce PathwayLinker, an accessible online tool for predicting potential signaling pathway consequences of protein alterations.
- To reduce the manual effort required for analyzing signaling pathway interactions and effects.
Main Methods:
- PathwayLinker integrates protein-protein interaction and signaling pathway data from multiple sources.
- It employs statistical significance tests and clear visualizations to present findings.
- The tool was validated through three case studies involving gene knockdown, gene function prediction, and drug target analysis.
Main Results:
- PathwayLinker successfully identified unexpected signaling biases in experimental scenarios.
- The tool predicted novel signaling pathway memberships for proteins, including drug targets like GJA1.
- Case studies demonstrated its utility in predicting gene function and potential drug side effects.
Conclusions:
- PathwayLinker provides a valuable first estimate of signaling effects, reducing manual literature searches.
- It is user-friendly, requiring no computational background, and aids in identifying unintended consequences of protein modifications.
- The tool aids in understanding complex signaling networks and potential off-target effects in biomedical research.
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