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  • Title: Elevated Lin28B expression is correlated with lymph node metastasis in oral squamous cell carcinomas.
    Author: Lin WT, Shieh TM, Yang LC, Wang TY, Chou MY, Yu CC.
    Journal: J Oral Pathol Med; 2015 Nov; 44(10):823-30. PubMed ID: 25726847.
    Abstract:
    BACKGROUND: Lymph node (LN) metastasis is the most common cause of oral squamous cell carcinoma (OSCC)-related death. Searching the detailed molecular mechanisms involved LN metastasis in OSCC is still an open question. METHODS: Paired tissue samples from tumor (T) and adjacent non-cancerous matched tissues (NCMT) parts, as well as LN metastatic lesions in patient with OSCC tissues were subjected to quantitative real-time PCR analysis for the expression levels of Lin28B. Arecoline, a major areca nut alkaloid, was to explore whether expression of Lin28B could be changed dose dependent in oral epithelial cells. Control and Lin28B-knockdown arecoline-stimulated oral epithelial cells were subjected to migration/invasion/anchorage-independent growth assay. RESULTS: Compared with NCMT samples from the same OSCC patient, the expression of Lin28B was increased in all of the tumor samples. A similar upregulation of Lin28B was also observed in LN metastatic when compared with local tumors. Arecoline treatment dose dependently induced Lin28B expression in SG and FaDu cells. Lentiviral-mediated silencing Lin28B expression significantly attenuated arecoline-induced oncogenicity including proliferation, migration, invasiveness, and anchorage-independent growth in SG and FaDu cells. CONCLUSIONS: Lin28B may be a useful biomarker and novel molecular target for LN metastasis OSCC patients' treatment.
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