Molecular & Cellular Toxicology

  • 제1권4호
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  • Pages.230-236
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  • 2005
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  • 1738-642X(pISSN)
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  • 2092-8467(eISSN)
대한독성유전 단백체학회 (The Korean Society of Toxicogenomics and Toxicoproteomics)
권호 표지

Genotoxicity and Identification of Differentially Expressed Genes of Formaldehyde in human Jurkat Cells

  • Kim, Youn-Jung (Cellular and Molecular Toxicology Laboratory, Korea Institute of Science and Technology) ;
  • Kim, Mi-Soon (Cellular and Molecular Toxicology Laboratory, Korea Institute of Science and Technology) ;
  • Ryu, Jae-Chun (Cellular and Molecular Toxicology Laboratory, Korea Institute of Science and Technology)
  • 발행 : 2005.12.30
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초록

Formaldehyde is a common environmental contaminant found in tobacco smoke, paint, garments, diesel and exhaust, and medical and industrial products. Formaldehyde has been considered to be potentially carcinogenic, making it a subject of major environmental concern. However, only a little information on the mechanism of immunological sensitization and asthma by this compound has been known. So, we performed with Jurkat cell line, a human T lymphocyte, to assess the induction of DNA damage and to identify the DEGs related to immune response or toxicity by formaldehyde. In this study, we investigated the induction of DNA single strand breaks by formaldehyde using single cell gel electrophoresis assay (comet assay). And we compared gene expression between control and formaldehyde treatment to identify genes that are specifically or predominantly expressed by employing annealing control primer (ACP)-based $GeneFishing^{TM}$ method. The cytotoxicity ($IC_{30}$) of formaldehyde was determined above the 0.65 mM in Jurkat cell in 48 h treatment. Based on the $IC_{30}$ value from cytotoxicity test, we performed the comet assay in this concentration. From these results, 0.65 mM of formaldehyde was not revealed significant DNA damages in the absence of S-9 metabolic activation system. And the one differentially expressed gene (DEG) of formaldehyde was identified to zinc finger protein 292 using $GeneFishing^{TM}$ method. Through further investigation, we will identify more meaningful and useful DEGs on formaldehyde, and then can get the information on the associated mechanism and pathway with immune response or other toxicity by formaldehyde exposure.

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