RCCRT1 Is Correlated With Prognosis and Promotes Cell Migration and Invasion in Renal Cell Carcinoma

Objective To investigate the expression pattern of a novel long noncoding ribonucleic acid (RNA), RCCRT1, in renal cell carcinoma (RCC) tissues among the patients with various clinicopathologic features and to detect the role of RCCRT1 in migration and invasion of RCC in vitro. Materials and Methods We found out a novel long noncoding RNA, RCCRT1, that expressed differently between high-grade (Fuhrman grade III-IV) and low-grade RCC tissues (Fuhrman grade I-II) by gene chip analysis, then verified it with quantitative polymerase chain reaction. The expression of RCCRT1 was diminished by transfecting with small interfering RNA. RCCRT1 effects were assessed by cell proliferation, cell apoptosis, transwell assay, and wound-healing assay. Results Compared with adjacent noncancerous tissues, RCCRT1 is upregulated remarkably in RCC, particularly in high-grade RCC tissues. After analyzing the relative expression of RCCRT1 in various tissues by quantitative reverse transcription polymerase chain reaction and clinicopathologic characteristics of patients, we drew the conclusion that RCCRT1 is associated with clinicopathologic findings such as tumor size, pathologic T stage, tumor grade, lymph node metastasis, and distant metastasis. Furthermore, small interfering RNA–induced depletion of RCCRT1 expression suppressed migration and invasion in RCC cell lines. Conclusion The results of the present study suggest that RCCRT1 promoted migration and invasion of RCC and that RCCRT1 may offer a biomarker to verdict prognosis as well as an attractive new target for prognostic and therapeutic intervention for RCC patients in the future.