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Prion Protein Misfolding, Strains, and Neurotoxicity : An Update from Studies on Mammalian Prions
Joint Authors
Saverioni, Daniela
Poggiolini, Ilaria
Parchi, Piero
Source
International Journal of Cell Biology
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-24, 24 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-12-24
Country of Publication
Egypt
No. of Pages
24
Main Subjects
Abstract EN
Prion diseases, also known as transmissible spongiform encephalopathies (TSEs), are a group of fatal neurodegenerative disorders affecting humans and other mammalian species.
The central event in TSE pathogenesis is the conformational conversion of the cellular prion protein, PrPC, into the aggregate, β-sheet rich, amyloidogenic form, PrPSc.
Increasing evidence indicates that distinct PrPSc conformers, forming distinct ordered aggregates, can encipher the phenotypic TSE variants related to prion strains.
Prion strains are TSE isolates that, after inoculation into syngenic hosts, cause disease with distinct characteristics, such as incubation period, pattern of PrPSc distribution, and regional severity of histopathological changes in the brain.
In analogy with other amyloid forming proteins, PrPSc toxicity is thought to derive from the existence of various intermediate structures prior to the amyloid fiber formation and/or their specific interaction with membranes.
The latter appears particularly relevant for the pathogenesis of TSEs associated with GPI-anchored PrPSc, which involves major cellular membrane distortions in neurons.
In this review, we update the current knowledge on the molecular mechanisms underlying three fundamental aspects of the basic biology of prions such as the putative mechanism of prion protein conversion to the pathogenic form PrPSc and its propagation, the molecular basis of prion strains, and the mechanism of induced neurotoxicity by PrPSc aggregates.
American Psychological Association (APA)
Poggiolini, Ilaria& Saverioni, Daniela& Parchi, Piero. 2013. Prion Protein Misfolding, Strains, and Neurotoxicity : An Update from Studies on Mammalian Prions. International Journal of Cell Biology،Vol. 2013, no. 2013, pp.1-24.
https://search.emarefa.net/detail/BIM-507379
Modern Language Association (MLA)
Poggiolini, Ilaria…[et al.]. Prion Protein Misfolding, Strains, and Neurotoxicity : An Update from Studies on Mammalian Prions. International Journal of Cell Biology No. 2013 (2013), pp.1-24.
https://search.emarefa.net/detail/BIM-507379
American Medical Association (AMA)
Poggiolini, Ilaria& Saverioni, Daniela& Parchi, Piero. Prion Protein Misfolding, Strains, and Neurotoxicity : An Update from Studies on Mammalian Prions. International Journal of Cell Biology. 2013. Vol. 2013, no. 2013, pp.1-24.
https://search.emarefa.net/detail/BIM-507379
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-507379