Goat K222-PrPC polymorphic variant does not provide resistance to atypical scrapie in transgenic mice
Host prion (PrPC) genotype is a major determinant for the susceptibility to prion diseases. The Q/K222-PrPC polymorphic variant provides goats and mice with high resistance against classical scrapie and bovine spongiform encephalopathy (BSE); yet its effect against atypical scrapie is unknown. Here, transgenic mice expressing the goat wild-type (wt) or the K222-PrPC variant were intracerebrally inoculated with several natural cases of atypical scrapie from sheep and goat and their susceptibility to the prion disease was determined. Goat wt and K222-PrPC transgenic mice were 100% susceptible to all the atypical scrapie isolates, showing similar survival times and almost identical disease phenotypes. The capacity of the K222-PrPC variant to replicate specifically the atypical scrapie strain as efficiently as the goat wt PrPC, but not the classical scrapie or cattle-BSE as previously reported, further suggests the involvement of concrete areas of the host PrPC in the strain-dependent replication of prions. © 2016 The Author(s).
| Main Authors: | , , , , , , |
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| Format: | journal article biblioteca |
| Language: | English |
| Published: |
BioMed Central
2016
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| Online Access: | http://hdl.handle.net/20.500.12792/4826 http://hdl.handle.net/10261/293453 |
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