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Molecular signatures of endodontitis and pulpal inflammation: a comprehensive gene expression and multi-parameter
1Department of Restorative Dental Sciences, College of Dentistry, Jazan University, Jazan 45142, Saudi Arabia. nboraak@jazanu.edu.sa.
Cellular and Molecular Biology (Noisy-Le-Grand, France)
|April 16, 2025
Summary
This study identified key gene expression changes in pulpitis, revealing potential molecular markers for diagnosis. Downregulation of immunoglobulin genes and upregulation of RNA processing factors offer new therapeutic targets for endodontic treatment.
Area of Science:
- Endodontics
- Molecular Biology
- Genomics
Background:
- Pulpal inflammation (pulpitis) presents a significant challenge in endodontic treatment.
- Current diagnostic methods rely heavily on clinical assessments, lacking molecular specificity.
- Understanding the molecular mechanisms of pulpitis is crucial for improved diagnosis and treatment strategies.
Purpose of the Study:
- To analyze comprehensive gene expression profiles in pulpitis to identify potential diagnostic markers.
- To elucidate the underlying molecular mechanisms of pulpal inflammation.
- To investigate gene expression differences between irreversible pulpitis and normal pulpal tissues.
Main Methods:
- Analysis of the GSE77459 dataset from Gene Expression Omnibus (GEO) using Affymetrix GeneTitan.
- Differential gene expression analysis via GEO2R with a false discovery rate of 5%.
- Statistical evaluation using adjusted p-values, log2 fold changes, and visualization techniques (Volcano plots, UMAP).
Main Results:
- Significant gene expression alterations were observed between inflamed and normal pulp tissues.
- Upregulated genes included SNORD113-3, RN5S290, and SH3GL2.
- Downregulated genes included immunoglobulin-related genes (IGHV3-72, IGKV1-5, IGHD).
- UMAP analysis showed distinct clustering, indicating consistent transcriptional differences.
Conclusions:
- Specific molecular signatures characterize pulpal inflammation, including immunoglobulin gene downregulation and RNA processing factor upregulation.
- Identified genes may serve as potential molecular markers for pulpitis diagnosis.
- Findings suggest novel therapeutic intervention directions for endodontic treatment.
