Accumulation of pathological prion protein PrPSc in the skin of animals with experimental and natural scrapie.
Prion infectivity and its molecular marker, the pathological prion protein PrP(Sc), accumulate in the central nervous system and often also in lymphoid tissue of animals or humans affected by transmissible spongiform encephalopathies. Recently, PrP(Sc) was found in tissues previously considered not...
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2007-05-01
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doaj-095245e813094dbe87522181b8ad41642020-11-25T01:35:06ZengPublic Library of Science (PLoS)PLoS Pathogens1553-73661553-73742007-05-0135e6610.1371/journal.ppat.0030066Accumulation of pathological prion protein PrPSc in the skin of animals with experimental and natural scrapie.Achim ThomzigWalter Schulz-SchaefferArne WredeWilhelm WemheuerBertram BrenigChristine KratzelKarin LemmerMichael BeekesPrion infectivity and its molecular marker, the pathological prion protein PrP(Sc), accumulate in the central nervous system and often also in lymphoid tissue of animals or humans affected by transmissible spongiform encephalopathies. Recently, PrP(Sc) was found in tissues previously considered not to be invaded by prions (e.g., skeletal muscles). Here, we address the question of whether prions target the skin and show widespread PrP(Sc) deposition in this organ in hamsters perorally or parenterally challenged with scrapie. In hamsters fed with scrapie, PrP(Sc) was detected before the onset of symptoms, but the bulk of skin-associated PrP(Sc) accumulated in the clinical phase. PrP(Sc) was localized in nerve fibres within the skin but not in keratinocytes, and the deposition of PrP(Sc) in skin showed no dependence from the route of infection and lymphotropic dissemination. The data indicated a neurally mediated centrifugal spread of prions to the skin. Furthermore, in a follow-up study, we examined sheep naturally infected with scrapie and detected PrP(Sc) by Western blotting in skin samples from two out of five animals. Our findings point to the skin as a potential reservoir of prions, which should be further investigated in relation to disease transmission.http://europepmc.org/articles/PMC1876502?pdf=render |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Achim Thomzig Walter Schulz-Schaeffer Arne Wrede Wilhelm Wemheuer Bertram Brenig Christine Kratzel Karin Lemmer Michael Beekes |
spellingShingle |
Achim Thomzig Walter Schulz-Schaeffer Arne Wrede Wilhelm Wemheuer Bertram Brenig Christine Kratzel Karin Lemmer Michael Beekes Accumulation of pathological prion protein PrPSc in the skin of animals with experimental and natural scrapie. PLoS Pathogens |
author_facet |
Achim Thomzig Walter Schulz-Schaeffer Arne Wrede Wilhelm Wemheuer Bertram Brenig Christine Kratzel Karin Lemmer Michael Beekes |
author_sort |
Achim Thomzig |
title |
Accumulation of pathological prion protein PrPSc in the skin of animals with experimental and natural scrapie. |
title_short |
Accumulation of pathological prion protein PrPSc in the skin of animals with experimental and natural scrapie. |
title_full |
Accumulation of pathological prion protein PrPSc in the skin of animals with experimental and natural scrapie. |
title_fullStr |
Accumulation of pathological prion protein PrPSc in the skin of animals with experimental and natural scrapie. |
title_full_unstemmed |
Accumulation of pathological prion protein PrPSc in the skin of animals with experimental and natural scrapie. |
title_sort |
accumulation of pathological prion protein prpsc in the skin of animals with experimental and natural scrapie. |
publisher |
Public Library of Science (PLoS) |
series |
PLoS Pathogens |
issn |
1553-7366 1553-7374 |
publishDate |
2007-05-01 |
description |
Prion infectivity and its molecular marker, the pathological prion protein PrP(Sc), accumulate in the central nervous system and often also in lymphoid tissue of animals or humans affected by transmissible spongiform encephalopathies. Recently, PrP(Sc) was found in tissues previously considered not to be invaded by prions (e.g., skeletal muscles). Here, we address the question of whether prions target the skin and show widespread PrP(Sc) deposition in this organ in hamsters perorally or parenterally challenged with scrapie. In hamsters fed with scrapie, PrP(Sc) was detected before the onset of symptoms, but the bulk of skin-associated PrP(Sc) accumulated in the clinical phase. PrP(Sc) was localized in nerve fibres within the skin but not in keratinocytes, and the deposition of PrP(Sc) in skin showed no dependence from the route of infection and lymphotropic dissemination. The data indicated a neurally mediated centrifugal spread of prions to the skin. Furthermore, in a follow-up study, we examined sheep naturally infected with scrapie and detected PrP(Sc) by Western blotting in skin samples from two out of five animals. Our findings point to the skin as a potential reservoir of prions, which should be further investigated in relation to disease transmission. |
url |
http://europepmc.org/articles/PMC1876502?pdf=render |
work_keys_str_mv |
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