Long noncoding RNA LINP1 promoted proliferation and invasion of ovarian cancer via inhibiting KLF6.

Li, Y; Hou, C-Z; Dong, Y-L; Zhu, L; Xu, H

OBJECTIVE Ovarian cancer is one of the most ordinary fatal cancers. The role of long noncoding ribonucleic acids (lncRNAs) in tumor progression has caught the attention of numerous researchers. In this work, lncRNA LINP1 was studied to identify how it functioned in the progression of ovarian cancer. PATIENTS AND METHODS Firstly, quantitative real-time polymerase chain reaction (qRT-PCR) was utilized to measure LINP1 expression in ovarian cancer tissues. Furthermore, to identify the function of LINP1 in ovarian cancer, functional experiments were conducted. Also, by performing qRT-PCR and Western blot assay, the underlying mechanism was explored. RESULTS In this research, LINP1 expression was remarkably higher in ovarian carcinoma samples compared with adjacent tissues. Moreover, cell proliferation, migration, and invasion were inhibited after LINP1 was silenced in the ovarian cancer cells. Besides, the messenger (mRNA) and the protein of KLF6 were overexpressed after LINP1 was silenced. Furthermore, the KLF6 expression level was negatively related to the LINP1 expression level in ovarian cancer samples. CONCLUSIONS We discovered a potential oncogene in ovarian cancer and identified that LINP1 enhanced cell metastasis and proliferation via down-regulating KLF6.