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2003 Fiscal Year Final Research Report Summary

Study on the functions of semaphorins and their receptors in neuron network formation

Research Project

Project/Area Number 13309008
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field 広領域
Research InstitutionNagoya University

Principal Investigator

FUJISAWA Hajime  Nagoya University, Graduate School of Science, Division of Biological Science, Professor, 大学院・理学研究科, 教授 (60079689)

Co-Investigator(Kenkyū-buntansha) TAKAGI Shin  Nagoya University, Graduate School of Science, Division of Biological Science, Associate Professor, 大学院・理学研究科, 助教授 (90171420)
SUTO Fumikazu  Nagoya University, Graduate School of Science, Division of Biological Science, Research Associate, 大学院・理学研究科, 助手 (40345848)
Project Period (FY) 2001 – 2003
Keywordsneuron network / development / axon guidance / semaphorin / neuropilin / plexin / mouse / C.elegans
Research Abstract

Axons are navigated along particular paths towards their definite targets, after interacting with various attractive or repulsive guidance cues. Semaphorin is a family of molecules that regulate direction growth of axons. Neuropilins and plexins are semaphorin receptors.
In this study, we performed the following 5 projects in the mice and nematode C.elegans, and clarified molecular roles of semaphorins and their receptors in the establishment of neuron networks. In addition, we have found that semaphorins and their receptors played important roles in neuronal cell migration, cardiovascular development and morphogenesis of epithelial tissues, as well as neuron network formation.
1) Identification of novel plexins in the mice.
2) Production of plexin-A mutant mice by targeted gene disruption, and study on their function in vivo.
3) Identification and characterization of novel class 6 semaphorins.
4) Study of the function of semaphorin signals, by production of the neuropilin-1/neuropilin-2 double knockout mice
5) Study on plexin function in nematode C.eleganse.

  • Research Products

    (17 results)

All Other

All Publications (17 results)

  • [Publications] Takahiko Kawasaki: "Requirement of neuropilin-1-mediated Sema3A signals in patterning of the sympathetic nervous system."Development. 129. 671-680 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Takashi Fujii: "C. elegans plexinA, PLX-1,interacts with transmembrane semaphorins and regulates epidermal morphogenesis."Development. 129. 2053-2063 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Fumikazu Suto: "Identification and characterization of a novel mouse plexin, plexin-A4."Mech Dev. 120. 385-396 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Tomoyuki Masuda: "Developmental regulation of notochord-derived repulsion for dorsal root ganglion axons."Mol Cell Neurosci. 25. 217-227 (2004)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Toshihiko Toyofuku: "Dual roles of. Sema6D in cardiac morphogenesis through region-specific association of its receptor, Plexin-A1, with off-track and vascular endothelial growth factor receptor type 2."Gen & Dev. 18. 435-447 (2004)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Hajime Fujisawa: "Discovery of semaphorin receptors, neuropilin and plexin, and their functions in neural development"J Neurobiol. 59. 24-33 (2004)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Bert Oosthuyse et al.: "Deletion of the hypoxia-response element in the vascular endothelial growth factor promoter causes motor neuron degeneration."Nature Genetics. 28. 131-138 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Takahiko Kawasaki et al.: "Requirement of neuropilin-1-mediated Sema3A signals in patterning of the sympathetic nervous system."Development. 129. 671-680 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Takashi Fujii et al.: "C.elegans plexinA, PLX-1, interacts with transmembrane semaphorins and regulates epidermal morphogenesis."Development. 129. 2053-2063 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Seiji Takashima et al.: "Targeting of both mouse neuropilin-1 and neuropilin-2 genes severely impairs developmental yolk sac and embryonic angiogenesis."Proc.Nat.Acad.Sci, USA. 99. 3657-3662 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Christiana Ruhrberg et al.: "Spatially-restricted patterning cues provided by heparin-binding VEGF-A control blood vessel branching morphogenesis."Genes & Dev.. 16. 2684-2698 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Tomoyuki Masuda et al.: "Differential non-target-derived repulsive signals play a critical role in shaping initial axonal growth of dorsal root ganglion neurons."Dev.Biol.. 254. 289-302 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Fumikazu Suto et al.: "Identification and characterization of a novel mouse plexin, plexin-A4.Y"Mech.Dev.. 120. 385-396 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yoshihiro Yamada et al.: "Neuropilin-1 on hematopoietic cells as a source of vascular development."Blood. 101. 1801-1809 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Tomoyuki Masuda et al.: "Developmental regulation of notochord-derived repulsion for dorsal root ganglion axons."Mol.Cell.Neurosci.. 25. 217-227 (2004)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yoshihiko Toyofuku et al.: "Dual roles of Sema6D in cardiac morphogenesis through region-specific association of its receptor, Plexin-A1, with off-track and vascular endothelial growth factor receptor type 2."Gen & Dev. 18. 435-447 (2004)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hajime Fujisawa: "Discovery of semaphorin receotors, neuropilin and plexin, and their functions in neural development."J.Neurobiol.. 59. 24-33 (2004)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2005-04-19  

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