|Large-Scale Characterization of DNA Methylation Changes in Human Gastric Carcinomas with and without Metastasis|
|Liu, Zhaojun1; Zhang, Jun1,2; Gao, Yanhong1; Pei, Lirong3; Zhou, Jing1; Gu, Liankun1; Zhang, Lianhai4; Zhu, Budong5; Hattori, Naoko6; Ji, Jiafu4; Yuasa, Yasuhito7; Kim, Wooho8; Ushijima, Toshikazu6; Shi, Huidong3; Deng, Dajun1|
|刊名||CLINICAL CANCER RESEARCH|
|WOS标题词||Science & Technology|
|关键词[WOS]||SERUM RESPONSE FACTOR ; TUMOR-SUPPRESSOR ; BREAST-CANCER ; CARDIA CANCER ; EXPRESSION ; GENE ; IDENTIFICATION ; GFR-ALPHA-1 ; GENOME ; CELLS|
Purpose: Metastasis is the leading cause of death for gastric carcinoma. An epigenetic biomarker panel for predicting gastric carcinoma metastasis could have significant clinical impact on the care of patients with gastric carcinoma. The main purpose of this study is to characterize the methylation differences between gastric carcinomas with and without metastasis.
Experimental Design: Genome-wide DNA methylation profiles between 4 metastatic and 4 nonmetastatic gastric carcinomas and their surgical margins (SM) were analyzed using methylated-CpG island amplification with microarray. The methylation states of 73 candidate genes were further analyzed in patients with gastric carcinoma in a discovery cohort (n = 108) using denatured high performance liquid chromatography, bisulfite-sequencing, and MethyLight. The predictive values of potential metastasis- methylation biomarkers were validated in cohorts of patients with gastric carcinoma in China (n = 330), Japan (n = 129), and Korea (n = 153).
Results: The gastric carcinoma genome showed significantly higher proportions of hypomethylation in the promoter and exon-1 regions, as well as increased hypermethylation of intragenic fragments when compared with SMs. Significant differential methylation was validated in the CpG islands of 15 genes (P < 0.05) and confirmed using bisulfite sequencing. These genes included BMP3, BNIP3, CDKN2A, ECEL1, ELK1, GFRA1, HOXD10, KCNH1, PSMD10, PTPRT, SIGIRR, SRF, TBX5, TFPI2, and ZNF382. Methylation changes of GFRA1, SRF, and ZNF382 resulted in up-or downregulation of their transcription. Most importantly, the prevalence of GFRA1, SRF, and ZNF382 methylation alterations was consistently and coordinately associated with gastric carcinoma metastasis and the patients′ overall survival throughout discovery and validation cohorts in China, Japan, and Korea.
Conclusion: Methylation changes of GFRA1, SRF, and ZNF382 may be a potential biomarker set for prediction of gastric carcinoma metastasis. (C) 2014 AACR.
|作者单位||1.Shihezi Univ, Sch Med, Shihezi, Peoples R China|
2.Natl Canc Ctr, Div Epigenet, Chuo Ku, Tokyo, Japan
3.Peking Univ, Canc Hosp & Inst, Div Etiol, Key Lab Carcinogenesis & Translat Res,Minist Educ, Beijing 100142, Peoples R China
4.Georgia Regents Univ, GRU Canc Ctr, Augusta, GA USA
5.Peking Univ, Canc Hosp & Inst, Dept Surg, Beijing 100142, Peoples R China
6.Peking Univ, Canc Hosp & Inst, Dept Oncol, Beijing 100142, Peoples R China
7.Tokyo Med & Dent Univ, Dept Mol Oncol, Bunkyo Ku, Tokyo, Japan
8.Seoul Natl Univ, Coll Med, Dept Pathol, Seoul 151, South Korea
|Liu, Zhaojun,Zhang, Jun,Gao, Yanhong,et al. Large-Scale Characterization of DNA Methylation Changes in Human Gastric Carcinomas with and without Metastasis[J]. CLINICAL CANCER RESEARCH,2014,20(17):4598-4612.|
|APA||Liu, Zhaojun.,Zhang, Jun.,Gao, Yanhong.,Pei, Lirong.,Zhou, Jing.,...&Deng, Dajun.(2014).Large-Scale Characterization of DNA Methylation Changes in Human Gastric Carcinomas with and without Metastasis.CLINICAL CANCER RESEARCH,20(17),4598-4612.|
|MLA||Liu, Zhaojun,et al."Large-Scale Characterization of DNA Methylation Changes in Human Gastric Carcinomas with and without Metastasis".CLINICAL CANCER RESEARCH 20.17(2014):4598-4612.|