Downregulation of a long noncoding RNA-ncRuPAR contributes to tumor inhibition in colorectal cancer

s In recent years, the role of long noncoding RNAs (lncRNAs) in cancer is increasingly focused. ncRuPAR is a newly detected lncRNA; in previous study, we found out that ncRuPAR could inhibit tumor progression by downregulating protease-activated receptor-1 (PAR-1), but its role in colorectal cancer...

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Veröffentlicht in:Tumor biology 2014-11, Vol.35 (11), p.11329-11335
Hauptverfasser: Yan, Bing, Gu, Wei, Yang, Zhihui, Gu, Zhan, Yue, Xiaoqiang, Gu, Qunhao, Liu, Long
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container_end_page 11335
container_issue 11
container_start_page 11329
container_title Tumor biology
container_volume 35
creator Yan, Bing
Gu, Wei
Yang, Zhihui
Gu, Zhan
Yue, Xiaoqiang
Gu, Qunhao
Liu, Long
description s In recent years, the role of long noncoding RNAs (lncRNAs) in cancer is increasingly focused. ncRuPAR is a newly detected lncRNA; in previous study, we found out that ncRuPAR could inhibit tumor progression by downregulating protease-activated receptor-1 (PAR-1), but its role in colorectal cancer (CRC) is never elucidated. Here, we conducted a self-control study which includes 105 CRC samples. By quantitative real time PCR (qRT-PCR) and immunohistochemical staining, we detected the expression of ncRuPAR and PAR-1 as well as their correlation; we further associated these data with the clinicopathologic parameters. A receiver operating characteristic (ROC) curve was constructed to evaluate the diagnostic value of ncRuPAR and PAR-1, respectively. Our results indicated that the expression of ncRuPAR was significantly downregulated in CRC compared with paired adjacent nontumor tissues, but the level of PAR-1 mRNA in cancerous tissues was significantly higher than in adjacent normal areas. The expression of ncRuPAR was significantly correlated with lymph node metastasis, distant metastasis, Duck’s stage, differentiation, and TNM stage and was potentially negatively associated with the mRNA levels and EI scores of PAR-1. The area under the ROC curve of ncRuPAR was 0.81 (95 % confidence interval (CI): 0.75–0.87); at a cutoff value of 8.34, the ncRuPAR measurement had a sensitivity of 97.14 %, a specificity of 65.87 %, and an accuracy of 82.86 % to predict CRC.
doi_str_mv 10.1007/s13277-014-2465-0
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subjects Biomarkers, Tumor - genetics
Biomedical and Life Sciences
Biomedicine
Cancer Research
Case-Control Studies
Cellular biology
Colon - metabolism
Colorectal cancer
Colorectal Neoplasms - genetics
Colorectal Neoplasms - metabolism
Colorectal Neoplasms - pathology
Down-Regulation
Female
Follow-Up Studies
Humans
Lymphatic Metastasis
Male
Metastasis
Middle Aged
Neoplasm Invasiveness
Neoplasm Staging
Prognosis
Protein expression
Real-Time Polymerase Chain Reaction
Receptor, PAR-1 - antagonists & inhibitors
Receptor, PAR-1 - genetics
Receptor, PAR-1 - metabolism
Rectum - metabolism
Research Article
Ribonucleic acid
RNA
RNA, Long Noncoding - genetics
ROC Curve
Survival Rate
title Downregulation of a long noncoding RNA-ncRuPAR contributes to tumor inhibition in colorectal cancer
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