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中华结直肠疾病电子杂志 ›› 2016, Vol. 05 ›› Issue (06) : 475 -479. doi: 10.3877/cma.j.issn.2095-3224.2016.06.004

所属专题: 文献

论著

利用GEO数据库分析结肠癌中EZH2及其相关基因的表达与意义
宋达为1, 黄睿1, 汤庆超1, 马天翼1, 罗玥琛2, 王贵玉1,(), 王锡山3,()   
  1. 1. 150086 哈尔滨医科大学附属第二医院结直肠肿瘤外科;150086 哈尔滨医科大学大肠癌研究所
    2. 150086 哈尔滨医科大学附属第二医院结直肠肿瘤外科
    3. 100021 北京,国家癌症中心/中国医学科学院北京协和医学院肿瘤医院结直肠外科
  • 收稿日期:2016-11-20 出版日期:2016-12-25
  • 通信作者: 王贵玉, 王锡山
  • 基金资助:
    黑龙江省医学科学院科研计划项目(No.201504); 哈尔滨医科大学科研基金(No.KYB2015-30)

Identification of EZH2-related key pathways and genes in colorectal cancer using bioinformatics analysis.

Dawei Song1, Rui Huang1, Qingchao Tang1, Tianyi Ma1, Yuchen Luo2, Guiyu Wang1,(), Xishan Wang3,()   

  1. 1. The Department of Colorectal Cancer, The Second Affiliated Hospital, Harbin Medical University, Harbin 150086, China;Colorectal cancer research institution, Harbin Medical University, Harbin 150086, China
    2. The Department of Colorectal Cancer, The Second Affiliated Hospital, Harbin Medical University, Harbin 150086, China
    3. Department of Colorectal Surgery, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
  • Received:2016-11-20 Published:2016-12-25
  • Corresponding author: Guiyu Wang, Xishan Wang
  • About author:
    Corresponding author: Wang Xishan, Email:
    WangGuiyu, Email:
引用本文:

宋达为, 黄睿, 汤庆超, 马天翼, 罗玥琛, 王贵玉, 王锡山. 利用GEO数据库分析结肠癌中EZH2及其相关基因的表达与意义[J/OL]. 中华结直肠疾病电子杂志, 2016, 05(06): 475-479.

Dawei Song, Rui Huang, Qingchao Tang, Tianyi Ma, Yuchen Luo, Guiyu Wang, Xishan Wang. Identification of EZH2-related key pathways and genes in colorectal cancer using bioinformatics analysis.[J/OL]. Chinese Journal of Colorectal Diseases(Electronic Edition), 2016, 05(06): 475-479.

目的

探讨果蝇Zeste基因增强子人类同源物(EZH2)在结肠癌的表达情况、评估对结直肠癌患者预后的意义,并分析预测与其相关的基因及细胞通路。

方法

通过GEO数据库下载基因芯片GSE17538数据内包含232例结直肠癌病例;结合R2平台,筛选出与EZH2表达显著相关的基因并进行GO和KEGG通路分析;通过Kaplan-Meier法绘制生存曲线,研究EZH2与患者预后、生存之间的关系。

结果

232例结肠癌标本中,EZH2的表达与年龄(χ2=4.426,P=0.035)、AJCC分期(χ2=8.259,P=0.041)和分化程度(χ2=7.301,P=0.026)有关,与性别(χ2=0.622,P=0.430)无关。全部检测出与EZH2表达显著相关基因共4 305个(其中正相关2 240个、负相关2 065个),对GO及KEGG通路分析后发现其中1 509个相关基因涉及细胞周期、RNA的转录、DNA复制等多个肿瘤发生、发展过程。Kaplan-Meier法分析,EZH2的表达与患者的无病生存期有相关性(P<0.05)。

结论

推测EZH2可成为研究患者预后的分子标志物,为未来深入研究提供参考。

Objective

The aim of this study was to investigate the prognosis value of the EZH2 expression and signatures during CRC and uncover their potential mechanisms in colorectal cancer.

Methods

The gene expression profiles of GSE17538 were downloaded from GEO database. The GSE17 538 data-set contained 232 samples. The data was combined by the R2 platform to search the genes which are associated with a significant expression with EZH2. The gene ontology(GO) and Kyoto Encyclopedia of Genes and Genomes pathway (KEGG) enrichment analyses were performed by R2 platform. The surival curves were estimated using the Kaplan-Meier method.

Results

In 232 cases, the expression of EZH2 in colorectal carcinoma was associated with age (χ2=4.426, P=0.035), AJCC stage (χ2=8.259, P=0.041) and differentiation (χ2=7.301, P=0.026), except for sex(χ2=0.622, P=0.430); In total, 4305 genes were identified which are associated with a significant expression with EZH2, including 2240 up-regulated genes and 2065 down-regulated genes. GO analysis and KEGG pathway analysis results showed that these were significantly enriched in biological processes , including proliferation in cell cycle, RNA transcription and DNA replication; Using the Kaplan-Meier method we found the expression of EZH2 is related with disease free survival .

Conclusion

EZH2 could be used as a potential prognostic marker and a therapeutic target in colorectal cancer.

表1 EZH2基因与临床信息的相关性分析(例)
图1 EZH2表达水平与患者预后之间的关系
表2 与EZH2表达成正负相关的基因
表3 与EZH2相关基因的KEGG分析
生物学过程 基因数 P 涉及基因(仅列出部分)
细胞周期 68 <0.001 ANAPC1,ANAPC11,ANAPC4,ANAPC5,ANAPC7,ATR,BUB1,BUB1B,BUB3,CCNA2,CCNB1,CCNB2,CCNE1,CCNE2,CDC20,CDC23,CDC25A,CDC25B,CDC25C,CDC6,CDC7,CDK1,CDK2,CDK4
剪接体 66 <0.001 ALYREF,AQR,BUD31,CCDC12,CHERP,DHX15,EFTUD2,EIF4A3,HNRNPA1,HNRNPK,HNRNPM,HNRNPU,ISY1,LSM2,LSM3,LSM4,LSM5,LSM6,LSM7,LSM8,MAGOHB,NCBP1,PHF5A,PPIH,PRPF31
RNA转运 75 <0.001 EIF4G1,EIF5B,GEMIN5,GEMIN6,GEMIN7,KPNB1,MAGOHB,NCBP1,NDC1,NUP107,NUP133,NUP155 NUP188
DNA复制 27 <0.001 DNA2,FEN1,LIG1,MCM2,MCM3,MCM4,MCM5,MCM6,MCM7,PCNA,POLA1,POLA2,POLD1,POLD2,POLD3,POLE3,PRIM1
核糖体合成 41 <0.001 CSNK2A2,CSNK2B,DROSHA,FBL,GAR1,GNL2,GTPBP4,HEATR1,IMP3,IMP4,LOC81691,LSG1,MDN1,MPHOSPH10,NAT10,NHP2
蛋白酶体 29 <0.001 POMP,PSMA1,PSMA2,PSMA3,PSMA4,PSMA5,PSMA7,PSMB1,PSMB10,PSMB2,PSMB3,PSMB4,PSMB5,PSMB6,PSMC2
嘧啶代谢 47 <0.001 CAD,CTPS1,DCK,DCTPP1,DHODH,DPYD,DTYMK,DUT,ENTPD1,NME1,NME5,NT5E,PNP,PNPT1,POLA1,POLD2
嘌呤代谢 69 <0.001 ADCY7,ADPRM,ADSL,AK2,AMPD3,APRT,ATIC,CECR1,DCK,DGUOK,ENPP1,ENTPD1,GART,GMPS,HDDC3
范可尼贫血相关通路 25 <0.001 ATR,BLM,BRCA1,BRCA2,BRIP1,EME1,ERCC1,FANCA,FANCB,FANCD2,FANCE,FANCG,FANCI,FANCL,RAD51,RMI1
碱基切除修复 18 <0.001 APEX1,APEX2,FEN1,LIG1,MBD4,NEIL3,PARP1,PARP2,PCNA,POLD1,POLD2,POLD3,POLE,POLE2,POLE3,TDG,UNG,XRCC1
表4 与EZH2相关基因的GO分析
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