Overexpression of Septin1: possible contribution to the development of oral cancer
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Updated: Jul 11, 2026

Modeling Oral-Esophageal Squamous Cell Carcinoma in 3D Organoids
Published on: December 23, 2022
Yoshikuni Kato1, Katsuhiro Uzawa, Nobuharu Yamamoto
1Department of Clinical Molecular Biology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan.
Abstract:
Our previous study using proteomic profiling demonstrated significant up-regulation of Septin1, a conserved family of GTPase proteins, in oral squamous-cell carcinoma (OSCC)-derived cell lines. In the current study, to determine the potential involvement of Septin1 in oral carcinogenesis, we evaluated the state of septin1 protein/mRNA expression in OSCC-derived cell lines, oral premalignant lesions (OPLs), and primary OSCCs. A significant (P<0.05) increase in Septin1 expression was evident in all OSCC-derived cell lines examined compared to human normal oral keratinocytes (HNOKs) and OPLs. In immunohistochemistry, while the vast majority of the OSCCs (89%) were positive for Septin1, no immunoreaction was observed in corresponding normal tissues and OPLs. In addition, real-time quantitative reverse transcriptase-polymerase chain reaction (QRT-PCR) data were consistent with the protein expression status. These results suggest that Septin1 expression could contribute to cancer progression, proliferation, or both, and that Septin1 may be a potential diagnostic marker of highly active cancer and a therapeutic target for OSCCs.
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