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  • Title: Macrophage migration inhibitory factor promotes the invasion and metastasis of oral squamous cell carcinoma through matrix metalloprotein-2/9.
    Author: Wang SS, Zheng M, Pang X, Zhang M, Yu XH, Wu JB, Gao XL, Wu JS, Yang X, Tang YJ, Tang YL, Liang XH.
    Journal: Mol Carcinog; 2019 Oct; 58(10):1809-1821. PubMed ID: 31219646.
    Abstract:
    Macrophage migration inhibitory factor (MIF) has been shown to closely associate with the malignant progression of a variety of human carcinomas. However, the role and its underlying molecular mechanisms of MIF in the invasion and metastasis of oral squamous cell carcinoma (OSCC) still remains unclear. Here, we found that MIF silencing reduced the cell proliferation, migration, and invasion, as well as matrix metalloprotein-2 (MMP-2) and MMP-9 in OSCC cells. Overexpression of MMP-2 or MMP-9 restored the migration and invasion of MIF-knockdown cells, indicating that MMP-2 and MMP-9 are downstream targets of MIF. In the xenograft model, MIF silencing inhibited tumor growth and in lymph metastasis model, MIF silencing reduced tumor metastasis. More importantly, immunohistochemistry staining in a tissue microarray (TMA) demonstrated that MIF expression was positively correlated with clinic stage, recurrence, metastasis, and poor prognosis of patients with OSCC as well as with the levels of MMP-2 or MMP-9 in TMA. Therefore, our findings suggest that MIF may promote the invasion and metastasis of OSCC through the activation of MMP-2 and MMP-9 and prompt further investigation into the therapeutic value of MIF for OSCC treatment.
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