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Updated: May 14, 2026
Non-invasive Imaging of Disseminated Candidiasis in Zebrafish Larvae
Published on: July 30, 2012
Identification of infection- and defense-related genes via a dynamic host-pathogen interaction network using a
Zong-Yu Kuo1, Yung-Jen Chuang, Chun-Cheih Chao
1Laboratory of Control and Systems Biology, Department of Electrical Engineering, National Tsing Hua University, Hsinchu, Taiwan, ROC.
Abstract:
Candida albicans infections and candidiasis are difficult to treat and create very serious therapeutic challenges. In this study, based on interactive time profile microarray data of C. albicans and zebrafish during infection, the infection-related protein-protein interaction (PPI) networks of the two species and the intercellular PPI network between host and pathogen were simultaneously constructed by a dynamic interaction model, modeled as an integrated network consisting of intercellular invasion and cellular defense processes during infection. The signal transduction pathways in regulating morphogenesis and hyphal growth of C. albicans were further investigated based on significant interactions found in the intercellular PPI network. Two cellular networks were also developed corresponding to the different infection stages (adhesion and invasion), and then compared with each other to identify proteins from which we can gain more insight into the pathogenic role of hyphal development in the C. albicans infection process. Important defense-related proteins in zebrafish were predicted using the same approach. The hyphal growth PPI network, zebrafish PPI network and host-pathogen intercellular PPI network were combined to form an integrated infectious PPI network that helps us understand the systematic mechanisms underlying the pathogenicity of C. albicans and the immune response of the host, and may help improve medical therapies and facilitate the development of new antifungal drugs.
Insights
This study models Candida albicans infection dynamics by constructing integrated protein-protein interaction networks. This approach reveals key host-pathogen interactions and identifies potential targets for new antifungal drugs.
Area of Science:
- Mycology
- Immunology
- Systems Biology
Background:
- Candida albicans infections (candidiasis) present significant therapeutic challenges.
- Understanding host-pathogen interactions is crucial for developing effective treatments.
Purpose of the Study:
- To construct integrated protein-protein interaction (PPI) networks for Candida albicans and zebrafish during infection.
- To investigate signal transduction pathways regulating C. albicans morphogenesis and hyphal growth.
- To identify key proteins involved in pathogenicity and host immune response.
Main Methods:
- Utilized time-profile microarray data for C. albicans and zebrafish infection.
- Developed a dynamic interaction model to construct intercellular and species-specific PPI networks.
- Analyzed networks corresponding to infection stages (adhesion, invasion) and identified defense-related proteins in zebrafish.
Main Results:
- Constructed integrated networks encompassing intercellular invasion and cellular defense processes.
- Identified significant interactions in the intercellular PPI network related to C. albicans hyphal growth.
- Predicted important defense-related proteins in zebrafish and formed a comprehensive infectious PPI network.
Conclusions:
- The integrated infectious PPI network provides insights into C. albicans pathogenicity mechanisms and host immune responses.
- This approach may facilitate the development of novel antifungal therapies.
- Understanding these complex interactions is key to improving medical treatments for candidiasis.
