Figure 8.
Biochemical analysis of Tga20 mice inoculated with in vivo vs. in vitro GSS-related samples. Biochemical analysis of brain homogenates from Tga20 mice inoculated with the in vitro misfolded P102L-129M rec-PrP and the in vivo isolate from a GSS affected patient. Representative mouse brain homogenates from animals inoculated with both in vitro and in vivo samples were digested with 12,5 µg/ml of PK and purified according to a special procedure detailed in the Methods. An indistinguishable atypical pattern characterized by multiple bands of PK-resistant PrP fragments was observed in both groups of inoculated Tga20 mice. Classical sheep scrapie was used as control to show classical pattern. 12B2 monoclonal antibody (1:2,500). Mw: Molecular weight. Samples were run in separate gels, as indicated by the blank space between them, and images were cropped to not show unrelated samples run in the same gels. Alignment of both cropped blots was done according to the molecular weight markers.