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- W2756213969 abstract "// Haochang Hu 1, * , Xiaoying Chen 1, * , Cheng Wang 2, * , Yuting Jiang 1 , Jingjing Li 3 , Xiuru Ying 1 , Yong Yang 1 , Bin Li 1 , Cong Zhou 1 , Jie Zhong 1 , Dongping Wu 2 , Jieer Ying 3 and Shiwei Duan 1 1 Medical Genetics Center, School of Medicine, Ningbo University, Ningbo, Zhejiang 315211, China 2 Department of Medical Oncology, Shaoxing People’s Hospital, Shaoxing Hospital of Zhejiang University, Zhejiang 312000, China 3 Department of Medical Oncology, Zhejiang Cancer Hospital, Hangzhou, Zhejiang 310022, China * Co-first authors Correspondence to: Shiwei Duan, email: duanshiwei@nbu.edu.cn Jieer Ying, email: jieerying@aliyun.com Keywords: tissue factor pathway inhibitor 2, DNA methylation, gastric cancer, colorectal cancer, quantitative methylation-specific polymerase chain reaction Received: November 30, 2016 Accepted: August 28, 2017 Published: September 20, 2017 ABSTRACT Gastrointestinal cancer is a prevalent disease with high morbidity and mortality. Tissue factor pathway inhibitor 2 ( TFPI2 ) gene could protect the extracellular matrix of cancer cells from degradation and tumor invasion. The goal of our study was to estimate the diagnostic value of TFPI2 hypermethylation in gastric cancer (GC) and colorectal cancer (CRC). TFPI2 methylation was measured by quantitative methylation-specific polymerase chain reaction (qMSP) method in 114 GC and 80 CRC tissues and their paired non-tumor tissues. Our results showed that TFPI2 methylation was significantly higher in tumor tissues (GC: 29.940% vs. 12.785%, P < 0.001; CRC: 26.930% vs. 5.420%, P < 0.001). The methylation level of TFPI2 in colorectal tumor tissues was significantly higher than that in colorectal normal tissues (26.930% versus 0.002%, P < 0.00001). In GC, TFPI2 hypermethylation yielded an area under the curve (AUC) of 0.762 (95% CI: 0.696–0.828) with a sensitivity of 68% and a specificity of 83%. In CRC, TFPI2 hypermethylation yielded an AUC of 0.759 (95% CI: 0.685–0.834) with a sensitivity of 61% and a specificity of 84%. Similarly, TCGA data also supported TFPI2 hypermethylation was a promising diagnostic marker for GC and CRC. Moreover, the dual-luciferase reporter assay showed TFPI2 fragment could upregulate gene expression (fold change = 5, P = 0.005). Data mining further indicated that TFPI2 expression in CRC cell lines was significantly increased after 5’-AZA-deoxycytidine treatment (fold change > 1.37). In conclusion, TFPI2 hypermethylation might be a promising diagnostic biomarker for GC and CRC." @default.
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- W2756213969 date "2017-09-20" @default.
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- W2756213969 title "The role of <i>TFPI2</i> hypermethylation in the detection of gastric and colorectal cancer" @default.
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- W2756213969 doi "https://doi.org/10.18632/oncotarget.21097" @default.
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