Dysregulated miR-645 affects the proliferation and invasion of head and neck cancer cell

Qiang Sun; Shuai Chen; Xue Zhao; Ming Yan; Zheng Fang; Haibin Wang; Junfang Zhao; Minglei Sun; Xinguang Han; Wantao Chen; Xinming Li

doi:10.1186/s12935-015-0238-5

Dysregulated miR-645 affects the proliferation and invasion of head and neck cancer cell

Cancer Cell Int. 2015 Sep 17:15:87. doi: 10.1186/s12935-015-0238-5. eCollection 2015.

Authors

Qiang Sun^#^{1

2}, Shuai Chen^#¹, Xue Zhao³, Ming Yan⁴, Zheng Fang¹, Haibin Wang¹, Junfang Zhao¹, Minglei Sun¹, Xinguang Han¹, Wantao Chen⁴, Xinming Li¹

Affiliations

¹ Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, No. 1, East Jian she Road, Zhengzhou, 450052 Henan China.
² Institute of Clinical Medicine, The First Affiliated Hospital of Zhengzhou University, No. 1, East Jian she Road, Zhengzhou, 450052 Henan China.
³ Department of Neuroimmunology Research, The Henan Academy of Medical and Pharmacologic Sciences, Zheng-Zhou University, Daxue Rd No. 40, Zhengzhou, 450052 Henan China.
⁴ Department of Oral and Maxillofacial-Head and Neck Oncology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011 China.

^# Contributed equally.

Abstract

Background and purpose: Dysregulated miRNAs play an important role in many malignant tumors. However, elucidating the roles of miRNAs in cancer biology, especially in epithelial cancers, remains an ongoing process. In this study, we identified the differentially expressed miR-645 in the progressing of head and neck squamous cell carcinoma (HNSCC) and investigated its biological function.

Methods: The association between clinicopathological parameters and the expression levels of the candidated miRNAs were analyzed by using the Kaplan-Meier survival analysis. The cell growth, invasion and migration potential, and clone formation were observed to detect the functions of the miRNAs in HNSCC cells.

Results: In the 34 HNSCC tissues with lymph node metastasis, the expression level of miR-645 was 0.54 ± 0.12, and the expression level was 0.22 ± 0.05 in the 28 tissues with non lymph node metastasis (p = 0.017). In patients with HNSCC, higher level of miR-645 expression significantly correlates with worse overall survival (p = 0.04). Ectopic expression of miR-645 promoted cell invasion and migration.

Conclusions: miR-645 play a key role in cell invasion and metastasis and their expression correlates with overall survival in the patients with HNSCC.

Keywords: Growth; HNSCC; Invasion; Metastasis; miR-645.