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2004 Fiscal Year Final Research Report Summary

Evaluation of environmental chemical effects on genome and gene expression

Research Project

Project/Area Number 15310043
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Risk sciences of radiation/Chemicals
Research InstitutionOkazaki Research Facilities, National Institute of Natural Sciences (2004)
Okazaki National Research Institutes (2003)

Principal Investigator

WATANABE Hajime  Okazaki Research Facilities, National Research Institute of Natural Sciences, Okazaki Institute for Integrative Bioscience, Associate Professor, 岡崎統合バイオサイエンスセンター, 助教授 (80212322)

Co-Investigator(Kenkyū-buntansha) IGUCHI Taisen  Okazaki Research Facilities, National Research Institute of Natural Sciences, Okazaki Institute for Integrative Bioscience, Professor, 岡崎統合バイオサイエンスセンター, 教授 (90128588)
Project Period (FY) 2003 – 2004
Keywordsestrogen / environmental chemicals / endocrine disruptors / nonylphenol / DNA microarray
Research Abstract

Recently, there has been considerable concern about potential endocrine-disrupting effects of chemicals released into the environment. Those chemicals that have estrogenic activity are termed xenoestrogens or endocrine disrupters. They are thought to mimic or disturb the function of estrogen and many are known to possess estrogen receptor binding activity.
To compare the effects of physiological estrogen (estradiol) and chemicals suspected as non-physiological estrogens (diethylstilbestrol ; nonylphenol), we used DNA microarray analysis to examine the uterine gene expression patterns induced by the estrogens and chemicals. Although estradiol and diethylstilbestrol induced many genes to respond in the same way, different groups of genes showed varying levels of sensitivity to each estrogen, resulting in different dose-response patterns. These results suggested that each estrogen has a similar but distinct effect on uterine gene expression.
In contrast to the similar effects of estrogen and chemicals observed in the uterus, in liver, gene expression was more markedly affected by estrogenic chemical (nonylphenol) than by estradiol. This indicated that in the liver, nonylphenol could activate another set of genes that is distinct from estrogen-responsive genes. These results indicate that nonylphenol has very similar effects to estradiol on gene expression in uterine but not in liver tissue, indicating that tissue-specific effects should be considered in order to elucidate the distinct effects of alkylphenols. In addition, in order to understand gene activation mechanism by estrogen in genomic level, chromatin immunoprecipitation was performed to identify direct target of estrogen receptor. Correlation between immunoprecipitated DNA fragment and gene activation profile was analyzed.

  • Research Products

    (14 results)

All 2005 2004

All Journal Article (13 results) Book (1 results)

  • [Journal Article] Selective ligand purification using high-performance affinity beads2004

    • Author(s)
      Ohtsu Y. et al.
    • Journal Title

      Analytical Biochemistry 338

      Pages: 245

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Comparative uterine gene expression analysis after dioxin and estradiol administration.2004

    • Author(s)
      Watanabe H. et al.
    • Journal Title

      Journal of Molecular Endocrinology 33

      Pages: 763

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Estrogen-independent activation of ErbBs signaling and estrogen receptor a in the mouse vagina exposed neonatally to diethylstilbestrol2004

    • Author(s)
      S.Miyagawa et al.
    • Journal Title

      Oncogene 23

      Pages: 340

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Persistent gene expression in mouse vagina exposed neonatally to diethylstilbestrol2004

    • Author(s)
      S.Miyagawa et al.
    • Journal Title

      J Mol Endocrinol. 32

      Pages: 663

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Tissue-specific estrogenic and non-estrogenic effects of a xenoestrogen, nonylphenol2004

    • Author(s)
      H.Watanabe et al.
    • Journal Title

      J Mol Endocrinol. 33

      Pages: 243

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Comparative uterine gene expression analysis after dioxin and estradiol administration2004

    • Author(s)
      H.Watanabe et al.
    • Journal Title

      J Mol Endocrinol. 33

      Pages: 763

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Selective ligand purification using high-performance affinity beads2004

    • Author(s)
      Ohtsu Y., Ohba R., Imamura Y., Kobayashi M., Hatori H., Zenkoh T., Hatakeyama M., Manabe T., Hino M., Yamaguchi Y., Kataoka K., Kawaguchi H., Watanabe H., Handa H.
    • Journal Title

      Analytical Biochemistry 338

      Pages: 245-252

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Comparative uterine gene expression analysis after dioxin and estradiol administration.2004

    • Author(s)
      Watanabe H., Suzuki A., Goto M., Ohsako S., Tohyama C., Handa H., Iguchi T.
    • Journal Title

      Journal of Molecular Endocrinology 33

      Pages: 763-771

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Effects of 17b-estradiol, nonylphenol, and bisphenol-A on developing Xenopus laevis embryos.2004

    • Author(s)
      Sone K., Hinago M., Kitayama A., Morokuma J., Ueno N., Watanabe H., Iguchi T.
    • Journal Title

      General and Comparative Endocrinology 138

      Pages: 228-236

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Role of foxj1 and estrogen receptor alpha in ciliated epithelial cell differentiation of the neonatal oviduct.2004

    • Author(s)
      Okada A., Ohta Y., Brody S.L., Watanabe H., Krust A., Chambon P., Iguchi T.
    • Journal Title

      Journal of Molecular Endocrinology 32

      Pages: 615-625

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Persistent gene expression in mouse vagina exposed neonatally to diethylstilbestrol.2004

    • Author(s)
      Miyagawa S., Suzuki A., Katsu Y., Kobayashi M., Goto M., Handa H., Watanabe H., Iguchi T.
    • Journal Title

      Journal of Molecular Endocrinology 32

      Pages: 663-677

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Tissue-specific estrogenic and non-estrogenic effects of a xenoestrogen, nonylphenol.2004

    • Author(s)
      Watanabe H., Suzuki A., Kobayashi M., Lubahn D., Handa H., Iguchi T.
    • Journal Title

      Journal of Molecular Endocrinology 33

      Pages: 243-252

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Evaluation of Estrogenic Activity in Diets for Experimental Animals Using in Vitro Assay.2004

    • Author(s)
      Kato H., Iwata T., Katsu Y., Watanabe H., Ohta Y., Iguchi T.
    • Journal Title

      Journal of agricultural and food chemistry 52

      Pages: 1410-1414

    • Description
      「研究成果報告書概要(欧文)」より
  • [Book] 生体統御システムと内分泌攪乱化学物質(井上達・井口泰泉編)2005

    • Author(s)
      渡邉 肇
    • Total Pages
      321
    • Publisher
      シュプリンガーフェアラーク出版
    • Description
      「研究成果報告書概要(和文)」より

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Published: 2006-07-11  

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