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Updated: Dec 23, 2025

Mapping Dysfunctional Protein-Protein Interactions in Disease
Published on: October 24, 2025
PDZ Domains as Drug Targets
Nikolaj R Christensen1, Jelena Čalyševa2,3, Eduardo F A Fernandes1
1Center for Biopharmaceuticals Department of Drug Design and Pharmacology University of Copenhagen Universitetsparken 2 2100 Copenhagen Denmark.
Specialized protein modules called PDZ domains are key to cell communication and protein networks. Modulating these domains offers promising therapeutic strategies for various diseases, including neurological and oncological disorders.
Area of Science:
- Molecular Biology
- Cell Biology
- Biochemistry
Background:
- Protein-protein interactions are fundamental to cellular function and form the human interactome.
- Specialized protein modules, such as postsynaptic density-95 (PSD-95), discs-large, zona occludens 1 (ZO-1) (PDZ) domains, mediate these interactions.
- PDZ domains are crucial for cellular processes including communication, polarization, protein transport, and metabolism, bridging external stimuli to intracellular responses.
Purpose of the Study:
- To review the structural and genetic characteristics of PDZ-containing proteins.
- To discuss the current development of small-molecule and peptide modulators targeting PDZ domains.
- To provide an overview of potential therapeutic interventions for PDZ-mediated protein networks.
Main Methods:
- Literature review of structural and genetic aspects of PDZ proteins.
- Analysis of current small-molecule and peptide drug development for PDZ domains.
- Exploration of therapeutic applications in PDZ-mediated diseases.
Main Results:
- PDZ domains are vital for protein complex formation and stability.
- PDZ domains are implicated in diverse cellular functions and disease pathways.
- Small-molecule and peptide modulators targeting PDZ domains are under active development.
Conclusions:
- PDZ domains represent promising therapeutic targets for a range of diseases.
- Targeting PDZ-mediated protein networks offers potential for novel treatment strategies.
- Further research into PDZ domain modulators could lead to significant advancements in medicine.
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