Ren Hongtao, Wang Zhongwei, Zhang Shuqun, Ma Hongbing, Wang Yali, Jia Lijun, Li Yiming
Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.
Oncol Res. 2016;23(5):249-56. doi: 10.3727/096504016X14562725373716.
Interleukin-17A (IL-17A) plays a significant role in many inflammatory diseases and cancers. The aim of this study is to investigate the effect of IL-17A on the invasiveness of colorectal cancer. In the study, we found that IL-17A could promote the migration and invasion of colorectal cancer cells. Furthermore, after being treated with IL-17A, the expression and activity of matrix metalloproteinase 2 (MMP-2) and MMP-9 were upregulated. Moreover, the nuclear/overall fractions and DNA-binding activity of p65 and p50 were dramatically elevated by IL-17A. Pretreatment with a nuclear factor-κB (NF-κB) inhibitor (PDTC) or PI3K/AKT inhibitor (LY294002) was proven to abolish the promoting effect of IL-17A on the invasion ability of colorectal cancer cells and upregulation of MMP-2/9. In conclusion, our findings demonstrated that IL-17A could promote the invasion of colorectal cancer cells by activating the PI3K/AKT/NF-κB signaling pathway and subsequently upregulating the expression of MMP-2/9. Our results suggest that IL-17A could serve as a promising therapeutic target for colorectal cancer.
白细胞介素-17A(IL-17A)在许多炎症性疾病和癌症中发挥着重要作用。本研究旨在探讨IL-17A对结直肠癌侵袭性的影响。在该研究中,我们发现IL-17A可促进结直肠癌细胞的迁移和侵袭。此外,用IL-17A处理后,基质金属蛋白酶2(MMP-2)和MMP-9的表达及活性上调。而且,IL-17A显著提高了p65和p50的核/总蛋白比例及DNA结合活性。事实证明,用核因子κB(NF-κB)抑制剂(PDTC)或PI3K/AKT抑制剂(LY294002)预处理可消除IL-17A对结直肠癌细胞侵袭能力的促进作用以及MMP-2/9的上调。总之,我们的研究结果表明,IL-17A可通过激活PI3K/AKT/NF-κB信号通路并随后上调MMP-2/9的表达来促进结直肠癌细胞的侵袭。我们的结果表明,IL-17A有望成为结直肠癌的治疗靶点。