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    Cancer-associated fibroblasts (CAFs) are "activated" fibroblasts in the tumor microenvironment (TME) and play a vital role in all steps of cancer development. Increasing evidence focusing on the function of CAFs suggests that CAFs are candidate therapeutic targets and that drugs targeting the modification of CAFs would suppress tumor progression and be beneficial to tumor treatment and prevention. In the present study, we found that curcumin reversed the phenotype of CAFs to that of peri-tumor fibroblast (PTF)-like cells by downregulating the expression of α-SMA (a special marker for CAFs) and inhibiting the secretion of pro-carcinogenic cytokines, including transforming growth factor-β1 (TGF-β1), matrix metalloproteinases 2 (MMP2), and stromal cell-derived factor-1 (SDF-1). We further demonstrated that the conditioned medium (CM) derived from CAFs promoted the proliferation of Cal27, and this effect was confirmed by the xenograft model. More importantly, we found that curcumin blocked the CAF-mediated enhancement of Cal27 proliferation in vitro and in vivo. In conclusion, our data suggest that curcumin reverses cell phenotype from CAF to PTF-like cells and suppresses the CAF-mediated proliferation and tumorigenicity of Cal27 by inhibiting TSCC CAFs. © 2020 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd. All rights reserved.


    Pengfei Ba, Mingcai Xu, Miao Yu, Linxia Li, Xiaoyu Duan, Shuyan Lv, Guo Fu, Jianbo Yang, Pishan Yang, Chengzhe Yang, Qinfeng Sun. Curcumin suppresses the proliferation and tumorigenicity of Cal27 by modulating cancer-associated fibroblasts of TSCC. Oral diseases. 2020 Oct;26(7):1375-1383

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    PMID: 32060973

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