Abstract
Background
CX3CL1 is a member of the chemokine family, and its receptor, CX3CR1, is expressed in pancreatic ductal adenocarcinoma. However, it is unclear whether there is a correlation between the expression of CX3CL1/CX3CR1 axis and the prognosis of patients with pancreatic ductal adenocarcinoma.
Methods
Tissue microarray and immunohistochemistry were used to study the expression of CX3CL1 and CX3CR1 in 105 specimens of pancreatic ductal adenocarcinoma. We analyzed a relationship between patients’ clinicopathological parameters and overall survival to the expression level of the CX3CL1/CX3CR1 axis using standard statistical analysis.
Results
The expression of CX3CL1 and CX3CR1 (77.1 and 66.7 %, respectively) was clearly increased in areas of malignancy compared with peritumoral areas. We did not find any correlation between CX3CL1 and CX3CR1 expression with clinical or pathological data. Patients’ overall survival was clearly worse with the combined high expression of CX3CL1 and CX3CR1. Patients with a high CX3CL1 expression tumor had a significantly shorter overall survival. High CX3CR1 expression was an independent negative prognosis factor.
Conclusion
We propose that the expression level of CX3CL1/CX3CR1 axis could provide clinical prognostic value, and the next steps should be to further investigate the mechanism by which CX3CL1 and its receptor impact survival in pancreatic ductal adenocarcinoma.
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Acknowledgments
We thank the patients who willingly and generously provided data and samples for research purposes and also appreciate the language polishing of Dr. Chaoling Yang and Dr. Shaunessy Rogers and the technical assistance of Ling Huang, Jun Lv, and Jingjing Xu.
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Xianhui Xu and Yang Wang contributed equally to this paper and wrote the paper.
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Xu, X., Wang, Y., Chen, J. et al. High Expression of CX3CL1/CX3CR1 Axis Predicts a Poor Prognosis of Pancreatic Ductal Adenocarcinoma. J Gastrointest Surg 16, 1493–1498 (2012). https://doi.org/10.1007/s11605-012-1921-7
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DOI: https://doi.org/10.1007/s11605-012-1921-7