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@ARTICLE{Eigenbrod:139661,
author = {Eigenbrod, Sabina and Frick, Petra and Bertsch, Uwe and
Mitteregger-Kretzschmar, Gerda and Mielke, Janina and
Maringer, Marko and Piening, Niklas and Hepp, Alexander and
Daude, Nathalie and Windl, Otto and Levin, Johannes and
Giese, Armin and Sakthivelu, Vignesh and Tatzelt, Jörg and
Kretzschmar, Hans and Westaway, David},
title = {{S}ubstitutions of {P}r{P} {N}-terminal histidine residues
modulate scrapie disease pathogenesis and incubation time in
transgenic mice.},
journal = {PLOS ONE},
volume = {12},
number = {12},
issn = {1932-6203},
address = {San Francisco, California, US},
publisher = {PLOS},
reportid = {DZNE-2020-05983},
pages = {e0188989},
year = {2017},
abstract = {Prion diseases have been linked to impaired copper
homeostasis and copper induced-oxidative damage to the
brain. Divalent metal ions, such as Cu2+ and Zn2+, bind to
cellular prion protein (PrPC) at octapeptide repeat (OR) and
non-OR sites within the N-terminal half of the protein but
information on the impact of such binding on conversion to
the misfolded isoform often derives from studies using
either OR and non-OR peptides or bacterially-expressed
recombinant PrP. Here we created new transgenic mouse lines
expressing PrP with disrupted copper binding sites within
all four histidine-containing OR's (sites 1-4, H60G, H68G,
H76G, H84G, 'TetraH>G' allele) or at site 5 (composed of
residues His-95 and His-110; 'H95G' allele) and monitored
the formation of misfolded PrP in vivo. Novel transgenic
mice expressing PrP(TetraH>G) at levels comparable to
wild-type (wt) controls were susceptible to mouse-adapted
scrapie strain RML but showed significantly prolonged
incubation times. In contrast, amino acid replacement at
residue 95 accelerated disease progression in corresponding
PrP(H95G) mice. Neuropathological lesions in terminally ill
transgenic mice were similar to scrapie-infected wt
controls, but less severe. The pattern of PrPSc deposition,
however, was not synaptic as seen in wt animals, but instead
dense globular plaque-like accumulations of PrPSc in
TgPrP(TetraH>G) mice and diffuse PrPSc deposition in
(TgPrP(H95G) mice), were observed throughout all brain
sections. We conclude that OR and site 5 histidine
substitutions have divergent phenotypic impacts and that cis
interactions between the OR region and the site 5 region
modulate pathogenic outcomes by affecting the PrP globular
domain.},
keywords = {Animals / Histidine: chemistry / Mice / Mice, Transgenic /
Prion Proteins: chemistry / Scrapie: pathology / Prion
Proteins (NLM Chemicals) / Histidine (NLM Chemicals)},
cin = {AG Neumann},
ddc = {610},
cid = {I:(DE-2719)1210003},
pnm = {344 - Clinical and Health Care Research (POF3-344)},
pid = {G:(DE-HGF)POF3-344},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:29220360},
pmc = {pmc:PMC5722314},
doi = {10.1371/journal.pone.0188989},
url = {https://pub.dzne.de/record/139661},
}