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Updated: Feb 16, 2026

Modeling Oral-Esophageal Squamous Cell Carcinoma in 3D Organoids
Published on: December 23, 2022
SUOX is negatively associated with multistep carcinogenesis and proliferation in oral squamous cell carcinoma
Ken Nakamura1,2, Jun Akiba3,4, Sachiko Ogasawara1
1Department of Pathology, Kurume University School of Medicine, 67 Asahimachi, Kurume, 830-0011, Japan.
Abstract:
Oral squamous cell carcinoma (OSCC) is the most common malignant tumor in the head and neck region. The aim of this study was to identify the key molecules and to elucidate the molecular mechanisms of OSCC carcinogenesis through a microarray analysis of RNA extracted from normal epithelium, dysplasia, and squamous cell carcinoma components. Out of molecules that showed changes in gene expression in the microarray analysis, we focused on Sulfite oxidase (SUOX), which correlated significantly with carcinogenic process and exhibited a stepwise decrease in expression. The expression of SUOX was evaluated in detail at the protein level using samples from 58 patients with cancer of the tongue, and correlating clinicopathological factors were also comprehensively examined. SUOX expression declined significantly from normal epithelium to dysplasia to squamous cell carcinoma components in line with carcinogenic process. With regard to squamous cell carcinoma, SUOX expression was significantly lower when T classification was high. Our findings indicated that SUOX is negatively associated with the progression and proliferation of tongue cancer, and suggest that SUOX may be a key molecule in tongue tumors.
Insights
Sulfite oxidase (SUOX) expression decreases during oral cancer development. Lower SUOX levels correlate with advanced tongue cancer, suggesting SUOX is a key molecule in oral squamous cell carcinoma progression.
Area of Science:
- Oncology
- Molecular Biology
- Biochemistry
Background:
- Oral squamous cell carcinoma (OSCC) is a prevalent head and neck malignancy.
- Understanding the molecular mechanisms driving OSCC is crucial for developing effective therapies.
Purpose of the Study:
- To identify key molecules and elucidate molecular mechanisms in OSCC carcinogenesis.
- To investigate the role of Sulfite oxidase (SUOX) in the development of oral cancer.
Main Methods:
- Microarray analysis of RNA from normal epithelium, dysplasia, and OSCC.
- Protein level evaluation of SUOX expression in 58 tongue cancer patients.
- Correlation analysis with clinicopathological factors.
Main Results:
- SUOX gene expression showed a stepwise decrease from normal to dysplastic to cancerous tissues.
- SUOX protein expression significantly declined with OSCC progression.
- Lower SUOX expression was associated with higher T classification in OSCC.
Conclusions:
- SUOX expression is significantly reduced during oral carcinogenesis.
- SUOX negatively correlates with the progression and proliferation of tongue cancer.
- SUOX may serve as a potential biomarker or therapeutic target in OSCC.
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