Abstract
Patients with advanced gastric carcinoma, especially peritoneal dissemination, have a poor prognosis. Various treatments have been used for peritoneal dissemination of gastric cancer, but there is no effective therapy for this condition. At present, similar proprieties of chemokines between trafficking of leukocytes during immune and inflammatory reactions and organ selective migration of cancer cells during metastasis are widely recognized. In particular, chemokine CXCL12 and its receptors CXCR4 are now known to play an important role in cancer progression. Recently, we reported for the first time that CXCR4 and its ligand, CXCL12, were involved in the development of peritoneal carcinomatosis of gastric cancer, and additionally, clarified the molecular mechanisms of the cell signaling pathways by which gastric cancer develops metastatic ability via CXCR4 and mTOR. In this review, we focus on the biological functions of chemokine receptors, particularly CXCR4 expressed on gastric cancer cells, and the therapeutic strategies targeting CXCR4-mediating signaling pathways in peritoneal carcinomatosis.
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