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Role of chemokine receptor CXCR4/CXCL12 signaling pathway in hepatic metastasis of colorectal carcinoma
Xiang-Tao Ma, Li-Wei Yu, Zai-Xing Zhang, Shan Wang, Ru-Yu Du, Zhi-Rong Cui
Xiang-Tao Ma, Li-Wei Yu, Zai-Xing Zhang, Department of Surgery, Beijing Haidian Hospital, Beijing 10080, China
Shan Wang, Ru-Yu Du, Zhi-Rong Cui, Department of Surgery and Division of Surgical Oncology, Peking University People's Hospital, Beijing 100044, China
Supported by: National Natural Science Foundation of China, No. 30271269.
Correspondence to: Dr. Xiang-Tao Ma, Department of Surgery, Beijing Haidian Hospital, 29 Zhongguancun Street, Beijing 100080, China. xiangtao_ma@pku.org.cn
Received: March 26, 2006 Revised: April 1, 2006 Accepted: April 16, 2006 Published online: June 8, 2006
AIM: To investigate the potential role of chemokine receptor CXCR4/CXCL12 signal transduction pathway in hepatic metastasis of colorectal carcinoma.
METHODS: CXCR4 and CXCL12 expression were detected in tissue samples from 60 patients with colorectal carcinoma representing various clinicopathological parameters by Western blot analysis.
RESULTS: The levels of CXCR4 and CXCL12 proteins expression were increased significantly in colorectal cancer as compared with those in the adjacent normal mucosa (P < 0.05). In the 10 patients with lymph node metastasis, the expression of CXCR4 and CXCL12 were also markedly higher than those in those without metastasis (CXCR4: 3.9 ± 0.5 vs 2.2 ± 0.3, P < 0.05; CXCL12: 3.6 ± 0.5 vs 2.4 ± 0.3, P < 0.05). The over-expression of CXCR4 and CXCL12 proteins were correlated with TNM staging, and they were highly elevated in colorectal cancer at Ⅲ and Ⅳ stages as compared with those at Ⅰ and Ⅱ stages (CXCR4: 3.4 ± 0.6 vs 1.8 ± 0.3, P < 0.05; CXCL12: 3.6 ± 0.5 vs 1.8 ± 0.4, P < 0.05).
CONCLUSION: Over-expression of CXCR4/CXCL12 plays an important role in the hepatic metastasis of colorectal carcinoma.
Key Words: Colorectal neoplasm; Signal transduction; Chemokine; Metastasis
Citation: Ma XT, Yu LW, Zhang ZX, Wang S, Du RY, Cui ZR. Role of chemokine receptor CXCR4/CXCL12 signaling pathway in hepatic metastasis of colorectal carcinoma. Shijie Huaren Xiaohua Zazhi 2006; 14(16): 1566-1570
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