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Prion protein mutations and their roles in pathogenesis Tamaki Muramoto 1 1Depart-ment of Neurological Science, Tohoku University Graduate School of Medicine Keyword: プリオン蛋白 , 変異 , 疾患モデル pp.29-35
Published Date 2003/2/10
DOI https://doi.org/10.11477/mf.1431100280
  • Abstract
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 A variety of prion protein(PrP)mutations are known to be associated with human prion diseases. However, it remains to be determined how mutations cause illness. It was hypothesized that mutations destabilize PrP to facilitate its conversion to the pathogenic isoform, PrPSc. Studies with recombinant PrP or cultured cells are currently underway that address how mutations affect the physicochemical and biological properties of PrP.

 To study the role of mutationsin vivo, models of inherited prion diseases have been made by over-expressing mutant PrPs in mice. In models of Gerstmann-Sträussler-Scheinker disease, spontaneous neurodegeneration was produced that features in PrP amyloid deposition and spongiform changes. In a model of prion disease caused by extra octapeptide repeats insertion, spontaneous neurodegeneration with PrP deposition in the brain was produced. However, none of the models produced the spontaneous generation of PrPSc.


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

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