Phospholipase D activation mediates growth and migration of colon cancer cells interacting with cancer-associated fibroblasts.

癌症研究 细胞迁移 癌细胞 磷脂酶D 细胞生长 结直肠癌 细胞生物学 化学 癌症 生物 细胞凋亡 信号转导 细胞培养 细胞 转移
作者
Salem Majdop,Yehuda Skornick,Shmuel Avital,Liron Berkovich
出处
期刊:Cellular and Molecular Biology [Cellular and Molecular Biology Association]
卷期号:64 (14): 84-88 被引量:6
标识
DOI:10.14715/cmb/2018.64.14.14
摘要

Cancer-associated fibroblasts of the stroma play a major role in tumor promoting processes. In this study we evaluated the significance of Phospholipase D (PLD) enzyme activity in promoting human colon cancer malignant potency when interacting with proximal colonic fibroblasts. Human colon cancer cell lines SW480 and HCT116, and colonic fibroblasts CCD-18Co were used as an in vitro model. PLD's activity was measured in resting cancer cells and after culturing with fibroblasts and cancer-associated fibroblasts (CAFs) conditioned medium. The viability and migration level of the cancer cells alone and after co-culturing with fibroblast or CAFs conditioned medium were evaluated, with and without adding a PLD inhibitor. Exposure of colon cancer cells to CAFs conditioned medium significantly increased the level of PLD activity in the cancer cells (p<0.0001). Exposure of colon cancer to resting and activated fibroblast conditioned medium significantly enhanced the number of viable cancer cells as well as its migration level measured following 24 and 48 hours. Adding a PLD inhibitor significantly reduced the elevation of cell viability and migration of the colon cancer cells exposed to fibroblasts conditioned medium (p<0.005). In this in vitro model, inhibition of PLD significantly decreased proliferation and migration levels of colon cancer cells generated by stromal fibroblasts. This provides evidence that the PLD signaling pathway is directly involved in stroma-cancer interactions in the colon, thereby promoting cancer progression. Further research is needed in order to evaluate PLD as a target in colon cancer prevention or therapy.
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