已发表论文

长非编码 RNA PVT1 在人类胃癌中的表达和临床意义

 

Authors Ding J, Li D, Gong M, Wang J, Huang X, Wu T, Wang C

Published Date September 2014 Volume 2014:7 Pages 1625—1630

DOI http://dx.doi.org/10.2147/OTT.S68854

Received 4 June 2014, Accepted 24 July 2014, Published 18 September 2014

Approved for publication by Professor Jianmin Xu

Background: Highly sensitive markers are urgently needed for the diagnosis and grading of gastric cancer and for managing drug resistance. The recent identification of long-non-coding RNAs (lncRNAs) has provided new approaches for resolving this challenge. The aim of this study was to screen and identify new biomarkers for human gastric cancer from lncRNAs.
Methods: First, we used lncRNA microarrays to conduct a preliminary screening for candidate lncRNAs of gastric cancer biomarkers in both human gastric cancer tissues and in two gastric cancer cell lines, SGC7901 cells and paclitaxel-resistant SGC7901 cells. The lncRNA plasmacytoma variant translocation 1 (PVT1 ) was found to exhibit higher expression in both gastric cancer tissues and the SGC7901 paclitaxel-resistant cell line. Quantitative polymerase chain reaction was used for large-scale analysis in a large number of human gastric cancer tissues to verify the involvement of PVT1  in development of gastric cancer. The relationships between PVT1  expression and clinical features were also analyzed.
Results: PVT1  showed higher expression in human gastric cancer tissues than in adjacent non-cancerous tissues and in SGC7901 paclitaxel-resistant cells compared with SGC7901 cells. PVT1  expression was correlated with lymph node invasion of gastric cancer.
Conclusion: PVT1  is a new biomarker for human gastric cancer and may indicate lymph node invasion. Therefore, PVT1  shows potential as a novel therapeutic target for the treatment of gastric cancer and enhancement of paclitaxel sensitivity.
Keywords: microarray analysis, quantitative polymerase chain reaction, lymph node invasion, tumor biomarkers, paclitaxel resistance