alexa IFN-induced protein with tetratricopeptide repeats 2 inhibits migration activity and increases survival of oral squamous cell carcinoma.
Neurology

Neurology

Journal of Neurological Disorders

Author(s): Lai KC, Chang KW, Liu CJ, Kao SY, Lee TC

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Abstract The function of the IFN-stimulated gene family protein, IFN-induced protein with tetratricopeptide repeats 2 (IFIT2), is poorly understood. Here, we report that IFIT2 colocalizes with cytokeratin 18 in oral squamous cell carcinoma (OSCC) cells. Treatment of OSCC cells with IFN-beta significantly increased the expression of IFIT2 and remarkably inhibited cell migration. To further explore the effect of IFIT2 on cell migration, IFIT2 expression was either silenced with a small interfering RNA or increased by ectopic expression. IFIT2 knockdown in OSCC cells led to a significantly higher level of migration in vitro (P < 0.05) compared with control cells; by contrast, IFIT2 overexpression led to a significantly lower level of migration in vitro (P < 0.05). Immunohistochemically, 71.4\% of OSCC tissues had elevated IFIT2 protein levels compared with noncancerous matched tissues. Elevated IFIT2 protein expression was positively associated with tumor differentiation status and inversely associated with nodal stage in OSCC specimens (P < 0.05). Higher IFIT2 protein levels in tumor tissues were also associated with better patient survival (P < 0.01). Our present study shows an inverse correlation between IFIT2 expression and cell migration, suggesting that IFIT2 plays an important role in inhibiting this process and that its expression may be associated with better prognosis in patients with OSCC. This article was published in Mol Cancer Res and referenced in Journal of Neurological Disorders

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