Journal
AURIS NASUS LARYNX
Volume 41, Issue 6, Pages 552-557Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.anl.2014.08.007
Keywords
Interleukin-33; ST2; Tongue squamous cell carcinoma; Inflammation; Mast cell; Malignant potential
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Funding
- Japan Society for the Promotion of Science (JSPS) KAKENHI [24791760]
- Grants-in-Aid for Scientific Research [24791760] Funding Source: KAKEN
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Objective: The aim of this study was to clarify the role of IL-33 in tumor progression. Methods: Surgical specimens from 81 patients with squamous cell carcinoma of the tongue were studied using immunohistochemistry. Primary tumor sections were analyzed for IL-33 and ST2 expression. To examine the influence of IL-33 on the microenvironment of the tumor, we determined the mast cell density (MCD) and microvessel density of the stroma. Results: Patients with high IL-33 expression had a significantly worse prognosis (p = 0.004). IL-33 expression was significantly elevated in patients with local and riodal recurrence (p = 0.014 and p = 0.019). ST2 expression was also associated with a worse prognosis:(p = 0.024) and was significantly elevated in patients with nodal recurrence (p = 0.004). MCD was associated with worse prognosis (p = 0.038) and correlated significantly with IL-33 expression (r = 0.626, p < 0.001). Micovessels in the stroma were significantly increased in the high IL-33 group (p < 0.001). Conclusion: These data suggest that the IL-33/ST2 axis contributes to tumor aggressiveness and affects the tumor microenvironment. Immunohistochemical evaluation of IL-33 and 5T2 is useful for identifying patients at a high risk for poor prognosis. (C) 2014 Elsevier Ireland Ltd. All rights reserved.
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