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Role of protease inhibition in neurite outgrowth. Yumiko SAITO 1 , Seiichi KAWASHIMA 1 1Department of Biochemistry, Tokyo Metropolitan Insitute of Gerontology pp.632-641
Published Date 1990/8/10
DOI https://doi.org/10.11477/mf.1431900059
  • Abstract
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 We described recent advances in studies on the role of protease-protease inhibitor systems in neurite outgrowth and introduce our finding that a new type of protease may be involved in the early stage of neuronal differentiation.

 A number of investigators reported that the relationship between protease and protease inhibitors is likely to be important for neurite outgrowth. Proteases released by growing neurites appear to be involved in neurite outgrowth. Primary cultures of mouse sensory neurons and rat sympathetic neurons release plasminogen activators (PA) and a Ca2+ dependent metalloprotease from distal processes and growth cones. A thrombin-like serine protease released by growing neurites has been suggested to play an important role in neurite ourgrowth from neuroblastoma cells and rat sympathetic neurons. In addition, glial and heart cell inhibitor of PA and thrombin (43 KDa: glia-derived protease nexin, and 50 KDa: heart-derived trophic factor, respectively) increase neurite outgrowth. Hirudin which is thrombin-specific inhibitor caused neurite initiation from neuroblastoma cells. These observations are consistent with aPA and/or thrombin-like protease being involved in neurite outgrowth. However, further discovery of cell- or growth cone-associated proteases must be anticipated.


Copyright © 1990, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1243 印刷版ISSN 0001-8724 医学書院

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