Histochemistry and Cell Biology

, Volume 134, Issue 6, pp 615–622 | Cite as

Small GTPases of the Rab family in the brain of Bombyx mori

  • Tomohide Uno
  • Keisuke Hata
  • Susumu Hiragaki
  • Yuri Isoyama
  • Le Thi Dieu Trang
  • Yuichi Uno
  • Kengo Kanamaru
  • Hiroshi Yamagata
  • Masahiko Nakamura
  • Michihiro Takagi
  • Makio Takeda
Original Paper

Abstract

Small GTPases of the Rab family are key regulators of membrane trafficking. We produced antibodies against the Rab7 protein of Bombyx mori (BRab7) in rabbits, and against the Rab11 protein of B. mori (BRab11) in mice. The antibodies recognized BRab7 and BRab11 proteins, but did not recognize other Rab proteins. Immunoblotting of samples from brain tissue of B. mori revealed a single band for each antibody. Rab11 was expressed in most tissues, whereas Rab7 was expressed in the brain, ovary, and testis. Immunohistochemical reactivity of Rab7 and Rab11 in the brain of B. mori was restricted to neurons of the pars intercerebralis and dorsolateral protocerebrum. Double-labeling experiments demonstrated that immunohistochemical reactivity of Rab7 co-localized with that of Rab11 and partially with that of Rab8. Immunohistochemical reactivity of Rab11 and Rab8 co-localized with that of PERIOD, one of the proteins associated with circadian rhythm. These findings suggest that Rab7, Rab8, and Rab11 are involved in protein transport in the neurons of the brain of B. mori and might play a role in the control of circadian rhythm.

Keywords

Bombyx mori Rab Brain PERIOD Insect 

Notes

Acknowledgments

This work was supported in part by a Grant-in-Aid for Research in Priority Areas, 20580053 and Global Center of Education and Research Program (19GCOE01), from the Ministry of Education, Science, Sports and Culture of Japan.

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Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • Tomohide Uno
    • 1
  • Keisuke Hata
    • 1
  • Susumu Hiragaki
    • 2
  • Yuri Isoyama
    • 1
  • Le Thi Dieu Trang
    • 3
  • Yuichi Uno
    • 4
  • Kengo Kanamaru
    • 1
  • Hiroshi Yamagata
    • 1
  • Masahiko Nakamura
    • 5
  • Michihiro Takagi
    • 6
  • Makio Takeda
    • 2
  1. 1.Laboratory of Biological Chemistry, Department of Biofunctional Chemistry, Faculty of AgricultureKobe UniversityKobeJapan
  2. 2.Graduate School of Agricultural ScienceKobe UniversityKobeJapan
  3. 3.Institute for Biotechnology and EnvironmentNong Lam UniversityHo Chi Minh CityVietnam
  4. 4.Department of Plant Resource Science, Faculty of AgricultureKobe UniversityKobeJapan
  5. 5.Department of Bioscience and Biotechnology, Faculty of Bioenvironmental ScienceKyoto Gakuen UniversityKameokaJapan
  6. 6.Research Team for Viral DiseaseNational Institute of Animal HealthTsukubaJapan

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