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Identification of Non-Invasive Diagnostic Markers for Oral Squamous Cell Carcinoma Through Salivary Microbiome and Gene Expression Analysis
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Identification of Non-Invasive Diagnostic Markers for Oral Squamous Cell Carcinoma Through Salivary Microbiome and Gene Expression Analysis
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Journal Article
Identification of Non-Invasive Diagnostic Markers for Oral Squamous Cell Carcinoma Through Salivary Microbiome and Gene Expression Analysis
2025
Overview
Oral squamous cell carcinoma (OSCC) is a malignancy with a poor prognosis, and early diagnosis is essential for improving patient survival and quality of life. This study aimed to develop a non-invasive screening method based on salivary gene expression and microbiome analysis. Unstimulated saliva samples were collected from patients with OSCC, patients with oral potentially malignant disorders, and healthy controls. Microbiome profiling was performed using 16S ribosomal RNA gene sequencing. The OSCC group showed a significant increase in Fusobacterium and Bacteroidetes and a decrease in Streptococcus. LEfSe analysis indicated microbial changes associated with disease progression. Receiver operating characteristic analysis demonstrated high diagnostic accuracy when multiple bacterial species were combined. An increase in Fusobacteria was also associated with a higher risk of recurrence. Gene expression analysis revealed that NUS1, RCN1, CPLANE1, and CCL20 were significantly upregulated in OSCC, as confirmed by qRT-PCR and tissue expression data. Notably, CCL20 expression positively correlated with Fusobacterium abundance. These findings suggest that integrated analysis of the salivary microbiome and gene expression may offer a useful non-invasive approach for early OSCC detection and disease monitoring. Furthermore, we integrated current evidence from the literature to provide a comprehensive overview.
Publisher
MDPI AG,MDPI
Subject
/ Aged
/ B cells
/ Bacteria
/ Biomarkers, Tumor - genetics
/ Cancer
/ Carcinoma, Squamous Cell - diagnosis
/ Carcinoma, Squamous Cell - genetics
/ Carcinoma, Squamous Cell - microbiology
/ Chemokine CCL20 - metabolism
/ Disease
/ Female
/ Gene Expression Regulation, Neoplastic
/ Genes
/ Humans
/ Larynx
/ Male
/ Mouth Neoplasms - microbiology
