Slug silencing inhibited perineural invasion through regulation of EMMPRIN expression in human salivary adenoid cystic carcinoma

被引：16

作者：

Wu, Baolei ^{[1
]}

Wei, Jianhua ^{[1
]}

Hu, Zhiqiang ^{[1
]}

Shan, Chun ^{[1
]}

Wang, Lei ^{[1
]}

Zhang, Chenping ^{[2
]}

Yang, Xi ^{[2
]}

Yang, Xinjie ^{[1
]}

Lei, Delin ^{[1
]}

机构：

[1] Fourth Mil Med Univ, State Key Lab Mil Stomatol, Dept Oral & Maxillofacial Surg, Sch Stomatol, 145 West Changle Rd, Xian 710032, Peoples R China

[2] Shanghai Jiao Tong Univ, Sch Stomatol, Dept Oral & Maxillofacial Head & Neck Oncol, Shanghai Key Lab Stomatol,Sch Med,Peoples Hosp 9, 639 Zhizaoju Rd, Shanghai 200011, Peoples R China

来源：

TUMOR BIOLOGY | 2016年 / 37卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Salivary adenoid cystic carcinoma; Slug; EMMPRIN; EMT; Perineural invasion; EPITHELIAL-MESENCHYMAL TRANSITION; PHASE-II; IN-VITRO; GLAND; CELLS; RECURRENT; CANCERS; HEAD; NECK; KIT;

D O I：

10.1007/s13277-015-4043-5

中图分类号：

R73 [肿瘤学];

学科分类号：

100214 ;

摘要：

Salivary adenoid cystic carcinoma (SACC) is the most frequent salivary gland malignancy with a unique characteristic that has been named perineural invasion (PNI). EMMPRIN is a transmembrane glycoprotein that has been demonstrated to promote PNI in SACC. Slug, one of the most effective promoters of the epithelial-to-mesenchymal transition (EMT), has been found to be associated with PNI in SACC. The aim of the present study was to investigate the roles and relationships of Slug, EMMPRIN, and E-cadherin in the PNI process of SACC. The expression levels of Slug, EMMPRIN, and E-cadherin in 115 primary SACC cases were statistically analyzed by immunohistochemistry. Simultaneously, the SACC cell line SACC-83 was transfected with recombinant plasmids of silencing Slug (si-Slug) and/or silencing EMMPRIN (si-EMMPRIN). The functions of Slug and EMMPRIN in the EMT and PNI process were assessed by reverse transcription PCR (RT-PCR), western blotting, morphological observation, scratch test, migration assay, and in vitro perineural invasion assay. The immunohistochemical statistics revealed that the high expression of Slug and EMMPRIN and the low expression of E-cadherin were significantly associated with the PNI of SACC (P < 0.05). Slug expression was significantly associated with EMMPRIN expression (P < 0.05), and Slug expression and EMMPRIN expression were both significantly negatively associated with E-cadherin expression (P < 0.05). Slug and EMMPRIN silencing both significantly inhibited EMMPRIN expression but promoted E-cadherin expression in SACC-83 cells (P < 0.01). The series of in vitro assays revealed that silencing of Slug, EMMPRIN, or both induced cell morphology changes and inhibited tumor cell motility and PNI ability in SACC-83 cells (P < 0.01). These results suggested that Slug silencing could inhibit the EMT process by downregulating EMMPRIN and then upregulating E-cadherin in the PNI process of SACC. The present study indicated that Slug and EMMPRIN are potential biomarkers and therapeutic targets for the diagnosis and treatment of PNI in human SACC.

引用

页码：2161 / 2169

页数：9