The LncRNA XIRP2-AS1 predicts favorable prognosis in colon cancer
Received 11 May 2019
Accepted for publication 26 June 2019
Published 17 July 2019 Volume 2019:12 Pages 5767—5778
Checked for plagiarism Yes
Review by Single-blind
Peer reviewers approved by Ms Rachel Predeepa
Peer reviewer comments 2
Editor who approved publication: Dr Takuya Aoki
Fengru Zhou,1 Feng Shen,1 Zhuojun Zheng,2 Jincheng Ruan1
1Department of Anus and Intestine Surgery, The Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang Province, People’s Republic of China; 2Department of Hematology, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu Province, People’s Republic of China
Background: Colorectal cancer is a heterogeneous disease with complex genetic and epigenetic changes. LncRNA has recently been regarded as the biomarker in cancers. Novel biomarkers in colon cancer need to be identified.
Purpose: The objective of this study was to identify the differentially expressed lncRNAs between colon cancer tissue and adjacent tissue, as well as to explore its biological functions.
Patients and methods: There were 130 colon cancer patients included in this study. Of them, 6 colon cancer samples and 3 normal samples were selected for microarray profiling. Another 121 colon cancer samples with complete clinical information were used for immunohistochemical assay and survival analysis. Microarray analysis was performed to determine the differentially expressed lncRNAs between colon cancer tissue and adjacent tissue. Gain-of-function experiments was conducted in vitro and in vivo. In situ hybridization and survival analysis were applied to determine the prognostic impact on survival.
Results: LncRNA XIRP2-AS1 was significantly less expressed in colon cancer tissue. XIRP2-AS1 was remarkably downregulated in colon cancer tissues and cell lines. Functionally, XIRP2-AS1 could inhibit the proliferation and invasion ability of colon cancer cells in vitro and in vivo. Clinical sample analysis showed that XIRP2-AS1 had a favorable impact on the overall survival and progression free survival of patients with colon cancer. miR-182 was validated as the target of XIRP2-AS1 according to luciferase reporter assays, RNA immunoprecipitation and RNA pull down.
Conclusions: Our results suggested that XIRP2-AS1 may act as a favorable biomarker for patients with colon cancer.
Keywords: colon cancer, XIRP2-AS1, proliferation, invasion, survival
This work is published and licensed by Dove Medical Press Limited. The full terms of this license are available at https://www.dovepress.com/terms.php and incorporate the Creative Commons Attribution - Non Commercial (unported, v3.0) License. By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed. For permission for commercial use of this work, please see paragraphs 4.2 and 5 of our Terms.Download Article [PDF] View Full Text [HTML][Machine readable]