[Expression of SLP-2 protein in esophageal squamous cell carcinoma is associated with cancer invasion]

Wen-feng Cao, Li-yong Zhang, Bin Zhang, Yue-qi Wang, Zhi-hua Liu, Bao-cun Sun
Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology] 2010, 32 (11): 830-3

OBJECTIVE: To study the expression of stomatin-like protein-2 (SLP-2) in esophageal squamous cell carcinoma (ESCC), and analyze the correlation between SLP-2 expression and clinicopathological features.

METHODS: The expression of SLP-2 protein in ESCC tissues (18 and 220 cases respectively) was detected by Western blot and IHC. The association between SLP-2 expression and clinicopathological features was analyzed.

RESULTS: Compared with normal epithelium, 13 cases of ESCC tissues showed a higher expression of SLP-2 on the protein level (72.2%, 13/18). IHC analysis on tissue microarray revealed that the expression rate of SLP-2 protein in ESCC was 54.1% and in normal esophageal mucosa was 3.6%, showing a significant difference (P < 0.001). SLP-2 high-level expression correlates with the extent of ESCC invasion (P = 0.033), but not with other clinicopathologic characteristics (P > 0.05).

CONCLUSION: SLP-2 as a novel cancer-related gene may play an important role in tumorigenesis of ESCC. The overexpression of SLP-2 may be closely associated with the invasion of esophageal cancer.

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