J Cancer 2021; 12(16):4958-4970. doi:10.7150/jca.55495

Research Paper

LncRNA SNHG14 promotes cell proliferation and invasion in colorectal cancer through modulating miR-519b-3p/DDX5 axis

Xiaoyuan Wang1,2, Peng Yang2, Dongsheng Zhang2, Ming Lu1, Chi Zhang1, Yueming Sun2✉

1. Department of General Surgery, The Second Affiliated Hospital Of Nanjing Medical University, Nanjing, Jiangsu Province, China.
2. Department of General Surgery, The First Affiliated Hospital Of Nanjing Medical University, Nanjing, Jiangsu Province, China.

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Citation:
Wang X, Yang P, Zhang D, Lu M, Zhang C, Sun Y. LncRNA SNHG14 promotes cell proliferation and invasion in colorectal cancer through modulating miR-519b-3p/DDX5 axis. J Cancer 2021; 12(16):4958-4970. doi:10.7150/jca.55495. Available from https://www.jcancer.org/v12p4958.htm

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Abstract

Numbers of studies suggest that long non-coding RNAs (lncRNAs) exert an important role in cancer progression. It is reported that lncRNA SNHG14 (SNHG14) promotes cell proliferation and invasion in many cancers. However, the underlying molecular mechanism of SNHG14 in colorectal cancer (CRC) remains unclear. In our study, we found that SNHG14 is highly expressed in CRC tissues and cells, especially in SW480 and HT-29 cells. In addition, sh-SNHG14 inhibits cell proliferation, cell migration and invasion, promotes cell apoptosis in CRC cell lines. Furthermore, we found that SNHG14 functions as a sponge for miR-519b-3p, while the DEAD box protein 5 (DDX5) is a downstream target gene of miR-519b-3p, and the functions of miR-519b-3p inhibitors on the CRC progression could be rescued by downregulation of DDX5. Our findings suggest that SNHG14 promotes the CRC progression by miR-519b-3p/DDX5 axis, implying the promising therapeutic target of SNHG4 for CRC patients.

Keywords: lncRNA SNHG14, miR-519b-3p, DDX5, colorectal cancer