Abstract
Long noncoding RNAs (LncRNAs) are involved in the occurrence and progression of human tumors including ovarian cancer (OC). Long noncoding RNA HOTTIP has been found to be involved in several human tumors development. However, the role of HOTTIP in OC remains large unknown. In the present study, our results observed that lncRNA HOTTIP expression levels were notably higher in ovarian cancer tissue samples compared to adjacent normal tissue samples. Increased lncRNA HOTTIP expression levels were significantly associated with advanced FIGO stage and lymph node metastasis of ovarian cancer patients. Survival plots analysis results showed high lncRNA HOTTIP expression levels in ovarian cancer patients showed a poor prognosis compared to patients with low lncRNA HOTTIP expression levels. Function assays showed that lncRNA HOTTIP knockdown in ovarian cancer cells decreased cell proliferation and cell invasion capacities. Furthermore, we demonstrated that inhibition of lncRNA HOTTIP suppressed Wnt/β-catenin signaling by downregulating β-catenin expression. Thus, these results suggest that aberrant HOTTIP expression level could serve as a promising biomarker for monitoring ovarian cancer and potential target of ovarian cancer treatment.
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