• Department of Hepatobiliary Surgery, The First Affiliated Hospital, Medical College of Xi’an Jiaotong University, Xi’an 710061, ChinaCorresponding Author: LIU Qing-guang, E-mail: liuqingguang@vip.sina.com;
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Objective  To investigate the expressions of CXCR4 and β-catenin in pancreatic cancer, explore the relationship between them, and explore the possible biomarkers about invasion and metastasis of pancreatic cancer.
Methods  Forty-eight samples of pancreatic cancer and 20 samples of normal pancreas tissues were selected. The expressions of CXCR4 and β-catenin were examined by the immunohistological technique. Spearman, Chi-square, and rank test were used to analyze the relation between the protein expressions and clinical characteristics. Survival analysis was evaluated by Kaplan-Meier product limit method and Log-rank test. Variables were evaluated by Cox proportional hazards analysis. The size of test was 0.05.
Results  The positive expression rates of CXCR4 and β-catenin in pancreatic cancer tissues were 85.4% (41/48) and 75.0% (36/48), respectively. Co-expression rate of  CXCR4 and β-catenin was 70.8% (34/48). There were significant differences between various CXCR4 staining and lymph node metastasis and TNM stage (P=0.012, 0.005, respectively). β-catenin positive expression was associated with lymph node metastasis (P=0.047). However, abnormal β-catenin positive expression could not determine the clinical survival. Kaplan-Meier estimated curves suggested that clinical prognosis was poor for patients with  CXCR4  expression. Multivariate analysis showed that CXCR4, late TNM stage, and lymph node metastasis were independent prognostic factors for pancreatic cancer.
Conclusions  Both CXCR4 and  β-catenin abnormally express in pancreatic cancer. CXCR4 may be an important marker for pancreatic cancer progression.

Citation: WANG Zheng,MA Qingyong,LI Junhui,LIU Qingguang.. Expressions and Clinical Significances of CXCR4 and β-catenin in Pancreatic Cancer. CHINESE JOURNAL OF BASES AND CLINICS IN GENERAL SURGERY, 2010, 17(10): 1071-1076. doi: Copy