NDLI: Sex-determining region Y-related high mobility group box (SOX)-2 is overexpressed in cervical squamous cell carcinoma and contributes cervical cancer cell migration and invasion in vitro

Content Provider	Springer Nature Link
Author	Chang, Xiaohan Zhang, Jing Huang, Chenglin Pang, Xiaoao Luo, Qingshuang Zhang, Huijie Zhang, Shulan
Copyright Year	2015
Abstract	Sex-determining region Y-related high mobility group box 2 (SOX-2) is a key pluripotency-associated transcription factor and may be implicated in the pathogenesis of cervical squamous cell carcinoma (SCC). The aim of this study was to explore SOX-2 expression in cervical SCC tissues and to examine whether and how SOX-2 regulates the malignant behaviors of cervical SCC cells in vitro. We here found that SOX-2 expression in the examined cervical SCC tissues was higher than that in the normal cervical and cervical intraepithelial neoplasia (CIN) tissues. Higher protein level of SOX-2 (nuclear positive staining cells ≥50 %) was detected in 34.9 % (29 out of 83 cases) of cervical SCC patients. We also noted that 100 % of well-differentiated and 66.7 % of moderately differentiated cervical SCCs showed lower SOX-2 expression (nuclear positive staining cells <50 %), while 58.8 % of poorly differentiated tumors had higher SOX-2 expression (P < 0.05). Furthermore, the migratory and invasive capabilities of SiHa cervical cancer cells were enhanced when SOX-2 was upregulated whereas suppressed when SOX-2 was downregulated. Also, the phosphorylation levels of protein kinase B (Akt) and extracellular regulated protein kinases (ERK) 1/2 were increased in SOX-2-overexpressed cancer cells but decreased in SOX-2-depleted cells. Additionally, LY294002 (Akt pathway inhibitor) or U0126 (ERK pathway inhibitor) significantly suppressed SOX-2-overexpression-induced migration and invasion in SiHa cells. Our results indicate that differentially expressed SOX-2 is associated with tumor differentiation (P < 0.05) and that SOX-2 contributes to the migratory and invasive behaviors of cervical SCC in vitro.
Starting Page	7725
Ending Page	7733
Page Count	9
File Format	PDF
ISSN	10104283
Journal	Tumor Biology
Volume Number	36
Issue Number	10
e-ISSN	14230380
Language	English
Publisher	Springer Netherlands
Publisher Date	2015-05-03
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Sex-determining region Y-related high mobility group box 2 Cervical squamous cell carcinoma Clinicopathologic features Migration Invasion Cancer Research
Content Type	Text
Resource Type	Article
Subject	Medicine Cancer Research

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