Detection of water-soluble disease-associated PrP species in blood and brain of scrapie-infected hamster

Detection of water-soluble disease-associated PrP species in blood and brain of scrapie-infected... The high-speed supernatant (SHS) of scrapie-infected hamster brain homogenate contains a soluble infectivity similar to that of the plasma that escapes leukodepletion and can transmit prion infection. This recent finding highlights the fact that soluble prion infectivity could be relevant for prion disease propagation and progression. PrPSc is essential in prion disease pathogenesis, but little to nothing is known about the PrPSc species that may be associated with this form of prion infectivity. Scrapie-infected hamster plasma and SHS were subjected to biochemical analysis, and the results demonstrate for the first time that soluble infectivity is associated with a water-soluble PrPSc species with substantially different properties from classical PrPSc, the concentration of which seems to correlate with the magnitude and efficiency of the soluble infectivity. Such characteristics suggest that this species might represent the soluble prion agent itself or its vehicle, highlighting the need to adequately revise the strategies involved in prion removal, diagnosis, and therapy. Archives of Virology Springer Journals

Detection of water-soluble disease-associated PrP species in blood and brain of scrapie-infected hamster

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Springer Vienna
Copyright © 2015 by Springer-Verlag Wien
Biomedicine; Virology; Medical Microbiology; Infectious Diseases
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