J Cancer 2015; 6(4):351-359. doi:10.7150/jca.11093

Research Paper

Expression and Function of HAX-1 in Human Cutaneous Squamous Cell Carcinoma

Xingyu Li1*, Tiejun Li1,2*, Bo You3, Yin Shan3, Si Shi3, Xiaolei Cao1✉, Li Qian4✉

1. Department of Pathological Anatomy, Medical School of Nantong University, Nantong 226001, Jiangsu, China;
2. Small RNA Technology and Application Institute, Nantong University, E&T Development Area, Nantong 226016, Jiangsu, China;
3. Medical School of Nantong University, Nantong 226001, Jiangsu, China;
4. Department of Oncology, Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu, China.
*The first two authors have contributed equally to this work.

Abstract

HAX-1 is an anti-apoptotic factor and overexpressed in many types of cancers. However, the functional role of HAX-1 in human cutaneous squamous cell carcinoma (cSCC) remains unclear. Our aim was to investigate the expression of HAX-1 in cSCC and its relationship with the development of cSCC. HAX-1 expression in cSCC tissues and in-vitro cell models were evaluated by real-time quantitative PCR (RT-qPCR), Western blot and immunohistochemistry. And the RNAi strategy was used to observe the relationship of HAX-1 and cSCC in A431 cells. The mRNA and protein level of HAX-1 were significantly higher in cSCC compared with normal tissue. There were significant differences in thickness (P=0.014), differentiation (P=0.027) and TNM stages (P=0.007). After knockdown the expression of HAX-1 by siRNA, the proliferation and the motility of A431 cell was inhibited obviously, and the apoptosis of A431 cells were induced too. HAX-1 may be a risk factor for patients with cSCC. As a potential tumor promoter in cSCC, HAX-1 may be a novel potential therapeutic target for cSCC treatment and deserves further investigation.

Keywords: HAX-1, Cutaneous squamous cell carcinoma (cSCC), RNA interference (RNAi), A431.

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How to cite this article:
Li X, Li T, You B, Shan Y, Shi S, Cao X, Qian L. Expression and Function of HAX-1 in Human Cutaneous Squamous Cell Carcinoma. J Cancer 2015; 6(4):351-359. doi:10.7150/jca.11093. Available from http://www.jcancer.org/v06p0351.htm