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LncRNA LINC00665 Promotes Prostate Cancer Progression via miR-1224-5p/SND1 Axis

Authors Chen W, Yu Z, Huang W, Yang Y, Wang F, Huang H

Received 9 December 2019

Accepted for publication 11 March 2020

Published 26 March 2020 Volume 2020:13 Pages 2527—2535

DOI https://doi.org/10.2147/OTT.S241578

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 2

Editor who approved publication: Dr Carlos E Vigil


Wei Chen,* Zhixian Yu,* Weiping Huang, Yu Yang, Feng Wang, Hang Huang

Department of Urology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, People’s Republic of China

*These authors contributed equally to this work

Correspondence: Hang Huang; Feng Wang
Department of Urology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, People’s Republic of China
Email hanghuang01@163.com; fengwang1@163.com

Background: Increasing researches have revealed a critical role of long noncoding RNAs (lncRNAs) in tumor progression. LINC00665 is a poorly investigated lncRNA. In this research, we sought to determine the potential role of LINC00665 in prostate cancer (PC) progression.
Methods: LINC00665 expression was analyzed by bioinformatics method and qRT-PCR. Proliferation was determined via CCK8 and colony formation assays. Transwell assay was conducted to analyze migration and invasion. Xenograft assay was used to test the roles of LINC00665 in vivo. Luciferase reporter assay, pulldown assay and RIP assay were utilized to confirm the interaction between LINC00665 and miR-1224-5p.
Results: LINC00665 expression was increased in PC samples in contrast to control tissues, according to bioinformatics analysis and qRT-PCR validation. LINC00665 high expression was related to a poor prognosis. LINC00665 knockdown markedly attenuated growth and metastasis of PC cells and impaired tumor propagation in vivo. Mechanistic investigation revealed that LINC00665 was the sponge for miR-1224-5p. By inhibiting miR-1224-5p level, LINC00665 dramatically promoted the expression of SND1 in PC cells. Ectopic expression of SND1 significantly rescued the effects of LINC00665 silencing.
Conclusion: LINC00665 is a novel oncogenic gene in PC by targeting miR-1224-5p/SND1 pathway and may be a therapeutic target.

Keywords: LINC00665, miR-1224-5p, SND1, prostate cancer, progression

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