C6orf106 enhances NSCLC cell invasion by upregulating vimentin, and downregulating E-cadherin and P120ctn.

Chromosome 6 open reading frame 106 (C6orf106) is a newly discovered protein; its expression and clinical pathological significance in human tumors remains unclear. Immunohistochemistry, Western blot, and immunofluorescence were performed to assess C6orf106 expression in non-small cell lung cancer (NSCLC). In addition, the relationships between subcellular localization and clinical pathological factors were analyzed. Through C6orf106 overexpression and repression, respectively, in lung cancer cell lines, we explored the effect of this molecule on NSCLC invasion abilities. C6orf106 was highly expressed in the cytoplasm of lung cancer tissue cells (60.4 %, 75/124), compared with adjacent normal lung tissues (15.2 %, 7/46, p < 0.001). In addition, its expression was positively correlated with differentiation (p = 0.001), TNM stage (p = 0.011), lymph node metastasis (p = 0.018), and poor prognosis (p = 0.006). Furthermore, C6orf106 overexpression enhanced NSCLC cell invasion. Moreover, C6orf106 was shown to increase vimentin expression, while decreasing E-cadherin and P120ctn. C6orf106 is highly expressed in NSCLC and correlates with clinical and pathological factors, as well as poor prognosis. C6orf106 promotes invasion in NSCLC cells. Finally, C6orf106 upregulates vimentin, and downregulates E-cadherin and P120ctn.

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