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Development of simple bioassay system for assessing neurotoxicity of environmental chemicals

Research Project

Project/Area Number 12680558
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 環境影響評価(含放射線生物学)
Research InstitutionKitasato University (2001)
National Institute for Environmental Studies (2000)

Principal Investigator

KUNIMOTO Manabu  Kitasato University, School of Pharmaceutical Sciences, Professor, 薬学部, 教授 (20142101)

Project Period (FY) 2000 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2001: ¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 2000: ¥1,800,000 (Direct Cost: ¥1,800,000)
KeywordsNeurotoxicity / Development / Neurite extension / Biomarker / Gene expression / In vitro / 環境化学物質 / 神経発生毒性 / 培養神経細胞 / 器官培養系 / マーカー蛋白質 / スクリーニング / 画像解析
Research Abstract

Development of a simple assay system that can evaluate the neurotoxicity of environmental chemicals especially on the developmental process of nervous system has been attempted. As a primary screening system, evaluation of degree of neurite extension in human neuroblastoma NB-1 cell by the computer image analysis, was used together with immunochemical determination of axonal marker proteins. Many chemicals (more than 10% of tested chemicals) turned out to affect the neurite extension in the NB-1 cell during the primary screening. Among 250 chemicals tested phthalate and cadmium remarkably promoted the neurite extension, while the neurite extension was remarkably suppressed by methylmercury, a cause of Minamata disease. In order to analyze the action mechanism at the molecular level, effects of cadmium and methylmercury on the gene expression in NB-1 cells was analyzed using CDNA macroarray and differential display methods, and several genes were identified to be affects by them.

Report

(3 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] Kunimoto, M: "A neuron-specific isoform of brain ankyrin, 440kD ankyring, as a useful tool for neurobilogy and neurotoxiclogy"J.Health.Sci.. 46. 178-181 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Pramanik, R., Ishido, M., Kunimoto, M: "Effects of cadmium chloride on neurite outgrowth and gene expression in human neuroblastoma NB-1 cells"J.Health Sci.. 47. 478-482 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Han J-Y., Adachi, T., Ishido, M., Kunimoto, M.: "Effects of dominant-negative expression of L1 cytoplasmic domain on the localization of brain andyrins in human neuroblartonis NB-1"J.Health Sci.. 47. 583-586 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Kunimoto, M.: "A neuron-specific isoform of brain ankyrin, 440 kD ankyrin_B, as a useful tool for neurobiology and neurotoxicology"J. Health Sci.. 46. 178-181 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Pramanik, R., Ishido, M. & Kunimoto, M.: "Effects of cadmium chloride on neurite outgrowth and gene expression in human neuroblastoma NB-1 cells"J. Health Sci.. 47. 478-482 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Han, J-Y., Adachi, T., Ishido, M. & Kunimoto, M.: "Effect of dominant-negative expression of L1 cytoplasmic domain on the localization of brain ankyrins in human neuroblastoma NB-1 cells"J. Health Sci.. 47. 583-586 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Pramanik, R. et al.: "Effects of cadmium on neurite out growth and gene expression in human neuroblastoma NB-1 cells"J.Health Sci.. 47. 478-482 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Han, J-Y. et al.: "Effects of dominant negative expression of L1-cytoplasmic domain on the localization of brain ankyrius in human neuroblastoma"J.Health Sci.. 47. 583-586 (2001)

    • Related Report
      2001 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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