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REGULATORY MECHANISM OF FUNCTION IN PHYSICAL EXERCISE BY A GROUP OF PROTEASES

Research Project

Project/Area Number 21591899
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Orthopaedic surgery
Research InstitutionKobe International University

Principal Investigator

KOBAYASHI Toshihiro  神戸国際大学, リハビリテーション学部・理学療法学科, 准教授 (40153621)

Co-Investigator(Kenkyū-buntansha) MITSUI Shinichi  群馬大学, 大学院・保健学研究科, 教授 (20295661)
Project Period (FY) 2009 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2010: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2009: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsシナプス / セリンプロテアーゼ / プラスミノーゲンアクチベータ / プロテアーゼ / モトプシン / 脊髄運動ニューロン / 軸索再生 / 運動機能 / 運動障害 / 遺伝子欠損マウス / スピネシン
Research Abstract

The overexpression of serine protease inhibitor, protease nexin-1, in motor neurons in the anterior horn causes abnormal structure of neuromuscular junctions(NMJ). However, the deletion of either tissue plasminogen activator(tPA) or motopsin gene, which encodes a serine protease secreted by motor neurons in the anterior horn, shows no effect on motor function. This suggests that these proteases compensate dysfunction each other. We produced double knockout mice lacking both tPA and motopsin genes, to analyze the proteolytic function on the development of the neuromuscular junction. Double knockout mice appeared to move comparable to heterogenic mice and show normal morphology of acetylcholine receptors at the NMJ. Detailed analyses should be necessary to reveal proteolytic functions on the NMJ formation.

Report

(4 results)
  • 2011 Annual Research Report   Final Research Report ( PDF )
  • 2010 Annual Research Report
  • 2009 Annual Research Report
  • Research Products

    (5 results)

All 2011 2009 Other

All Journal Article (2 results) (of which Peer Reviewed: 1 results) Presentation (2 results) Remarks (1 results)

  • [Journal Article] A mental retardation gene, motopsin/neurotrypsin. prss12, modulates hippocampal function and social interaction2009

    • Author(s)
      Mitsui S, Osako Y, Yokoi F, Dang MT, Yuri K, Li Y, Yamaguchi N
    • Journal Title

      Eur J Neurosci

      Volume: 30 Pages: 2368-2378

    • Related Report
      2011 Final Research Report
  • [Journal Article] A mental retardation gene, motopsin/neurotrypsin. prss12, modulates hippocampal function and social interaction2009

    • Author(s)
      Mitsui S, Osako Y, Yokoi F, Dang MT, Yuri K, Li Y, Yamaguchi N
    • Journal Title

      Eur J Neurosci 30

      Pages: 2368-2378

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Presentation] 精神遅滞原因遺伝子motopsinとSeizure related protein-6(Sez-6)の相互作用による神経突起伸制御2011

    • Author(s)
      三井真一
    • Organizer
      第88回日本生理学会大会、第116回日本解剖学会・全国学術集会合同大会
    • Place of Presentation
      パシフィコ横浜・会議センター
    • Year and Date
      2011-03-28
    • Related Report
      2011 Final Research Report
  • [Presentation] 精神遅滞原因遺伝子motopsinとSeizure related protein-6(Sez-6)の相互作用による神経突起伸制御2011

    • Author(s)
      三井真一
    • Organizer
      第88回日本生理学会大会,第116回日本解剖学会総会・全国学術集会合同大会
    • Place of Presentation
      パシフィコ横浜・会議センター
    • Year and Date
      2011-03-28
    • Related Report
      2010 Annual Research Report
  • [Remarks]

    • URL

      http://kaken.nii.ac.jp/ja/p/21591899

    • Related Report
      2011 Final Research Report

URL: 

Published: 2009-04-01   Modified: 2016-04-21  

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