Cytoplasmic expression of SOX9 as a poor prognostic factor for oral squamous cell carcinoma.

Cytoplasmic expression of SOX9 as a poor prognostic factor for oral squamous cell carcinoma. Oncol Rep. 2018 Aug 22;: Authors: Sumita Y, Yamazaki M, Maruyama S, Abé T, Cheng J, Takagi R, Tanuma JI Abstract Transcription factor SRY‑box 9 (SOX9) is a key regulator of chondrocyte differentiation and sex determination, and it is also involved in the progression of various types of human cancer. However, its putative association with oral squamous cell carcinoma (OSCC) remains elusive. The aim of the present study was to investigate the expression profiles of SOX9 in various oral epithelial lesions, including OSCC. We performed immunohistochemical analysis of SOX9 expression in surgical specimens of OSCC, which simultaneously exhibited different grades of epithelial lesions, and analyzed the correlation between SOX9 expression and several clinicopathological factors. Moreover, we performed immunofluorescent staining, western blot analysis and real‑time reverse transcription‑polymerase chain reaction to assess SOX9 expression in OSCC HSC‑3 (a metastatic cell line) and HSC‑4 (a non‑metastatic cell line) cell lines. In surgical specimens, SOX9 expression was detected in the nuclei of proliferating cells in areas with epithelial dysplasia and carcinoma in situ, but not in areas with normal epithelia. Nuclear SOX9 expression was observed in most SCC cells. Notably, cytoplasmic SOX9 expression was confirmed only in some SCC cells...
Source: Oncology Reports - Category: Cancer & Oncology Tags: Oncol Rep Source Type: research