Molecular & Cellular Toxicology

The Korean Society of Toxicogenomics and Toxicoproteomics (대한독성유전 단백체학회)
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Similarity of Gene Expression Profiles in Primary Brain Tumors with the Toxic Mechanism by Environmental Contaminants

  • Kim, Yu-Ri (Department of Biochemistry, and Molecular Biology, College of Medicine, Korea University) ;
  • Kim, Ki-Nam (Department of Biochemistry, and Molecular Biology, College of Medicine, Korea University) ;
  • Park, Yoon-Hee (Department of Biochemistry, and Molecular Biology, College of Medicine, Korea University) ;
  • Ryu, Yeon-Mi (Department of Biochemistry, and Molecular Biology, College of Medicine, Korea University) ;
  • Sohn, Sung-Hwa (Department of Biochemistry, and Molecular Biology, College of Medicine, Korea University) ;
  • Seo, Sang-Hui (Department of Biochemistry, and Molecular Biology, College of Medicine, Korea University) ;
  • Lee, Seung-Ho (Department of Biochemistry, and Molecular Biology, College of Medicine, Korea University) ;
  • Kim, Hye-Won (Department of Biochemistry, and Molecular Biology, College of Medicine, Korea University) ;
  • Lee, Kweon-Haeng (Catholic Neuroscience Center, The Catholic University) ;
  • Kim, Meyoung-Kon (Department of Biochemistry, and Molecular Biology, College of Medicine, Korea University)
  • Published : 2005.09.30
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Abstract

Recently, a large number of clinical experiments have shown that exposure of organic pollutants lead to various cancers through the abnormal cell growth. Environmental pollutants, such as 2, 3, 7, 8-Tetrachloro dibenzo-p-dioxin (TCDD) and polycyclic aromatic hydrocarbons (PAHs), are carcinogen and are known to cause the cognitive disability and motor dysfunction in the developing of brain. The effects of these pollutants on neurodevelopmental disorder is well established, but the underlying mechanism(s) and similarity of gene expression profiles in human brain tumors with organic pollutants still remain unclear. In this study, we first examined the gene expression profiles in glioblastomas compared with meningioma that are kinds of primary human brain tumor by using human cDNA microarray. The results of cDNA microarray analysis revealed that 26 genes were upregulated (Z-ratio>2.0) and 14 genes were downregulated (Z-ratio<-2.0) in glioblastoma compared with meningioma. From the altered gene patterns, mitogen-activated protein kinase (MAPK) signaling related genes, such as MAP2K3, MAP3K11 and jun activated domain binding protein, and transcription factors, such as UTF2 and TF12, were upregulated in glioblastoma. Also, we tried to investigate the relation between important genes up- and down-regulated in giloblastoma and various organic pollutants. Therefore, the identification of changes in the patterns of gene expression may provide a better understanding of the molecular mechanisms involved in human primary brain tumors and of the relation between gene expression profiles and organic pollutants in brain tissue.

Keywords

References

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