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  • Title: Long non-coding RNA XLOC_006390 promotes cervical cancer proliferation and metastasis through the regulation of SET domain containing 8.
    Author: Luan X, Wang Y.
    Journal: Oncol Rep; 2017 Jul; 38(1):159-166. PubMed ID: 28534991.
    Abstract:
    The long non-coding RNA (lncRNA) XLOC_006390 is increased in various human cancer tissues and it plays important roles in cell growth and migration. However, the role of lncRNA XLOC_006390 in the progression and metastasis of cervical cancer has not been evaluated and remains unclear. In the present study, we hypothesized that lncRNA XLOC_006390 is also increased in cervical cancer, and upregulation of lncRNA XLOC_006390 contributes to cervical cancer metastasis. The expression of lncRNA XLOC_006390 in cervical cancer tissues and cell lines was analyzed using quantitative reverse-transcription-polymerase chain reaction (qRT-PCR). RNA interference approach and an overexpression system were used to investigate the cellular functions of XLOC_006390 and SET domain containing 8 (SET8). Cell Counting Kit-8 (CCK-8) assay was performed to detect cell proliferation. Cell migration and invasion abilities were evaluated by Transwell assays. Western blotting and immunofluorescence were performed to detect SET8 protein expression. The results revealed that XLOC_006390 was increased in cervical cancer tissues. Patients with high XLOC_006390 expression were associated with FIGO stages III and IV (P=0.0170), lymphatic metastasis (P=0.0078) and distant metastasis (P=0.0025). Furthermore, SET8 was also increased in cervical cancer tissues and its expression was positively associated with XLOC_006390, and XLOC_006390 regulated SET8 expression. In addition, knockdown or overexpression of XLOC_006390 and SET8 expression suppressed or promoted cervical cancer cell proliferation, migration and invasion in vitro, respectively. In conclusion, our data suggest that lncRNA XLOC_006390 promotes cervical cancer cell growth and metastasis through the regulation of SET8, at least partly, which indicate the critical roles of XLOC_006390 and SET8 in cervical cancer progression and metastasis.
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