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  • Title: CCR7 Mediates TGF-β1-Induced Human Malignant Glioma Invasion, Migration, and Epithelial-Mesenchymal Transition by Activating MMP2/9 Through the Nuclear Factor KappaB Signaling Pathway.
    Author: Zheng Y, Miu Y, Yang X, Yang X, Zhu M.
    Journal: DNA Cell Biol; 2017 Oct; 36(10):853-861. PubMed ID: 28817313.
    Abstract:
    Chemokine receptor 7 (CCR7) has emerged as an inducer of invasion, migration, and epithelial-mesenchymal transition (EMT) in cancer. In this research, human malignant glioma cells were stimulated with transforming growth factor beta 1 (TGF-β1) and siCCR7. The data show that CCR7 mediates TGF-β1-induced EMT, migration, and invasion in U251 and U87 cells and that these effects of TGF-β1 were reversed by treatment with siCCR7 or a CCR7 neutralizing antibody. Importantly, the TGF-β1-mediated increase in nuclear factor kappaB (NF-κB) activity in human glioma cells was reduced by treatment with siCCR7 or a CCR7 neutralizing antibody. Furthermore, CCR7 was shown to mediate TGF-β1-induced glioma cancer cell migration by activating matrix metalloproteinase 2 (MMP2)/9. Our results indicate that CCR7 mediates TGF-β1-induced MMP2/9 expression through NF-κB signaling, thus facilitating glioma cell migration, invasion, and EMT, all of which progressively increase with glioblastoma progression. These findings indicate that CCR7 is a potential therapeutic target for malignant glioma.
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