Clinicopathological Significance of S100A14 Expression in Lung Adenocarcinoma

Ken Katono; Yuichi Sato; Makoto Kobayashi; Keita Saito; Ryo Nagashio; Shinichiro Ryuge; Satoshi Igawa; Hiroyasu Nakashima; Kazu Shiomi; Yukitoshi Satoh; Masaaki Ichinoe; Yoshiki Murakumo; Makoto Saegusa; Noriyuki Masuda
October 2017
Oncology Research & Treatment;Oct2017, Vol. 40 Issue 10, p594
Academic Journal
Background: Several studies have reported that S100A14 plays important roles during different steps of the tumo-rigenic process and tumor progression of several types of cancer. The aim of the present study was to investigate the clinicopathological and prognostic significance and functional roles of S100A14 in lung adenocarcinoma. Patients and Methods: S100A14 expression was immunohistochemically studied in 166 consecutive resected lung adenocarcinomas, and its correlation with clinicopathological parameters was evaluated. Functional roles of S100A14 in lung adenocarcinoma were investigated based on invasion and migration assays on a small interfering (si)RNA-treated lung adenocarcinoma cell line. Results: S100A14 expression was detected in 82 of the 166 (49.4%) lung adenocarcinomas. S100A14 expression was significantly correlated with sex, poorer tumor differentiation, higher disease stages, larger tumor size, lymph node metastasis, intratumoral vascular invasion, intratumoral lymphatic invasion, pleural invasion, and poorer prognosis. Invasion and wound healing assays showed that S100A14 siRNA knockdown cells had significantly decreased invasion and migration abilities compared with siRNA control cells. Conclusion: S100A14 is expressed in a subset of lung adenocarcinoma, and its expression is related to certain clinico-pathological parameters. Furthermore, S100A14 expression was strongly correlated with migration and invasion in lung adenocarcinoma cells.


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