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01.06.2019 | Original Research Article

Overexpression of S100A4 Predicts Migration, Invasion, and Poor Prognosis of Hypopharyngeal Squamous Cell Carcinoma

verfasst von: Jianing Xu, Neil Gross, Yuanwei Zang, Shengda Cao, Feilong Yang, Zheng Yang, Wenbin Yu, Dapeng Lei, Xinliang Pan

Erschienen in: Molecular Diagnosis & Therapy | Ausgabe 3/2019

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Abstract

Introduction

Hypopharyngeal squamous cell carcinoma (HSCC) is among the most lethal tumors encountered in the head and neck and frequently involves regional metastasis. However, the mechanism underlying the aggressiveness of HSCC remains elusive. S100A4 is a well-established metastasis-promoting regulator in a variety of malignancies, but its role in HSCC has not yet been identified.

Objectives

Our objectives were to explore the expression levels of S100A4 in HSCC tumors and its association with clinicopathological parameters and the clinical prognosis of HSCC and to confirm its role in the metastatic process of the HSCC FaDu cell line in vitro.

Methods

We assessed the expression levels of S100A4 with immunohistochemistry (IHC) in HSCC tumors (n = 71) and adjacent normal tissues (n = 44). In vitro experiments were performed to explore the impact of S100A4 knockdown on biological phenotypes of human HSCC FaDu cell line, including migration, invasion, proliferation, apoptosis, and cell cycle.

Results

The expression of S100A4 was elevated in HSCC tumors compared with adjacent normal tissues and positively correlated with cervical lymph node metastasis in this HSCC patient cohort. In vitro experiments showed that S100A4 knockdown significantly impaired migration and invasion and increased the proportion of cells in G0/G1 phase with no change in proliferation or apoptosis in FaDu cells. Additionally, nuclear S100A4 expression proved to be an independent prognostic indicator in patients with HSCC.

Conclusion

This study demonstrated for the first time that S100A4 expression is upregulated in HSCC tumors and that this upregulation is positively correlated with cervical lymph node metastasis of this malignancy. The metastasis-promoting role of S100A4 was further validated in the HSCC FaDu cell line, indicating that S100A4 is a potential therapeutic target for HSCC. Furthermore, this study suggests that nuclear S100A4 expression could be considered a prognostic biomarker for HSCC.
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Metadaten
Titel
Overexpression of S100A4 Predicts Migration, Invasion, and Poor Prognosis of Hypopharyngeal Squamous Cell Carcinoma
verfasst von
Jianing Xu
Neil Gross
Yuanwei Zang
Shengda Cao
Feilong Yang
Zheng Yang
Wenbin Yu
Dapeng Lei
Xinliang Pan
Publikationsdatum
01.06.2019
Verlag
Springer International Publishing
Erschienen in
Molecular Diagnosis & Therapy / Ausgabe 3/2019
Print ISSN: 1177-1062
Elektronische ISSN: 1179-2000
DOI
https://doi.org/10.1007/s40291-019-00393-2

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