ArticleMediators of inflammation2025
Causal Gene Identification and Biomarker Prioritization in Periodontitis via Integrative Multiomics and Mendelian Randomization.
Article in Mediators of inflammation, 2025. 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
Introduction: Periodontitis is a common inflammatory disease that compromises oral and systemic health. This study aimed to elucidate its molecular mechanisms and identify potential biomarkers for early diagnosis and precision treatment. Methods: We integrated genome-wide association study (GWAS) and transcriptomic data from periodontitis patients and healthy controls. Summary data-based Mendelian randomization (SMR) and the heterogeneity in dependent instruments (HEIDI) test were used to identify genetically associated genes. Differentially expressed genes (DEGs) were identified using LIMMA, and weighted gene co-expression network analysis (WGCNA) revealed disease-related gene modules. Candidate biomarkers were prioritized through intersection analysis and evaluated using five machine learning algorithms. Causal relationships were further validated by two-sample Mendelian randomization (TSMR). Functional enrichment was assessed via gene set enrichment analysis (GSEA) and gene set variation analysis (GSVA), and immune infiltration was analyzed using CIBERSORT. Results: SMR identified 360 gene-trait associations, with 320 passing the HEIDI test, corresponding to 294 unique genes. DEGs were enriched in immune and neuronal development pathways. WGCNA uncovered nine gene modules associated with periodontitis. Intersection and machine learning analyses identified five key biomarkers-GPX2, IGKV2D-30, CD34, GSTA4, and NYNRIN-with strong predictive performance, validated by MR analysis ( Conclusion: This integrative multiomics analysis uncovers causal genes and robust biomarkers involved in periodontitis pathogenesis, providing new insights for early detection and individualized treatment strategies. Further experimental validation is needed to confirm their functional roles in disease progression and therapeutic potential.
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