PRACTICAL ONCOLOGY JOURNAL ›› 2015, Vol. 29 ›› Issue (4): 299-304.doi: 10.11904/j.issn.1002-3070.2015.04.003

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Epigenomic analysis reveals 23 breast cancer pathogenic genes induced by aberrant DNA methylation

LIU Xiaojuan1,CHEN Wenjie2,LIU Hongbo3,ZHANG Jinming1,ZHANG Yan3   

  1. 1.Department of Rehabilitation,The First Affiliated Hospital of Harbin Medical University,Harbin 150001,China;
    2.Ophthalmology,Xiajin Hospital;
    3.College of Bioinformatics Science and Technology,Harbin Medical University
  • Received:2015-03-31 Online:2015-08-27 Published:2015-08-27

Abstract: Objective To identify and analyze the DNA methylation induced pathogenic genes in breast cancer.Methods Using genomic data provided by the international cancer genome,we carried out systematic analysis of the abnormal gene expression in breast cancer and epigenetic regulation mechanism by bioinformatics Methods .Results We identified 428 genes with abnormal expressions in breast cancer by t test.Functional enrichment analysis revealed genes up-regulation in breast cancer were closely related to the cell cycle,and those down-regulated were significantly enriched in the hormone response function.Study on DNA methylation revealed that breast cancer showed an unique DNA methylation pattern.Further analysis reveals 23 breast cancer genes induced by abnormal DNA methylation.Conclusion DNA methylation can mediate the abnormal expression of breast cancer genes,and is an important biological marker for early diagnosis and prognosis of breast cancer.

Key words: Breast cancer, DNA methylation, Differentially expressed gene

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