ArticleIndian journal of ophthalmology2026
The protein-protein interaction network analysis in idiopathic posterior uveitis.
Article in Indian journal of ophthalmology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeIdiopathic posterior uveitis (IPU) is a vision-threatening inflammatory condition affecting the posterior segment of the eye with poorly understood molecular mechanisms. This study aimed to identify the key molecular actors and functional pathways involved in IPU using protein-protein interaction (PPI) network analysis.
designIn silico bioinformatics study using PPI network analysis to identify key molecular pathways in IPU.
methodsSixteen proteins previously linked to IPU pathogenesis were identified in a comprehensive literature review. These seed proteins were used to query the STRING v12 database to retrieve high-confidence interactions (score ≥ 700). An expanded PPI network was built and analyzed using Python tools, including NetworkX and Louvain community detection algorithm. Topological metrics (degree, betweenness, and eigenvector centrality) were calculated to identify the hub and bottleneck proteins. Functional enrichment analysis was performed to assess the biological significance.
resultsThe resulting PPI network consisted of 260 proteins and 281 interactions. The network exhibited a low density (0.008) but a high modularity (0.8426), which is consistent with typical biological networks. Key hub proteins included PDGFRB, ORM1, IL23A, and TIMP1. Proteins such as IL6, KITLG, and STAT4 emerged as critical bottlenecks based on betweenness centrality. Multimetric centrality analysis highlighted TIMP1, TIMP2, KITLG, and IL6 as potential master regulators.
conclusionThe findings highlight the inflammatory, structural, and neurotrophic pathways as key components of disease pathogenesis, suggesting novel molecular targets for future therapeutic investigations. PPI network analysis offers a robust framework for uncovering the disease mechanisms in complex ocular inflammatory conditions.
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