TY - JOUR
T1 - C-terminal-deleted prion protein fragment is a major accumulated component of systemic PrP deposits in hereditary prion disease with a 2-Bp (CT) deletion in PRNP codon 178
AU - Honda, Hiroyuki
AU - Matsuzono, Kosuke
AU - Fushimi, Soichiro
AU - Sato, Kota
AU - Suzuki, Satoshi O.
AU - Abe, Koji
AU - Iwaki, Toru
N1 - Funding Information:
Disclosure of funding: This study was supported in part by a Grant-in-Aid for Scientific Research (C) (No. 25430050) and Grant-in-Aid for Scientific Research (B) (No. 26290017) from the Japan Society for the Promotion of Science (JSPS)
Publisher Copyright:
© 2016 American Association of Neuropathologists, Inc.
PY - 2016/11
Y1 - 2016/11
N2 - Prion protein (PrP) has 2 glycosylated sites and a glycosylphosphatidylinositol (GPI) anchor on the C-terminal. Reports on genetic prion disease with GPI anchorless PrP are very limited. In this study, we characterized the molecular alterations of mutated PrP in a 37-year-old female autopsy case with a recently identified PRNP mutation involving a 2-bp deletion in codon 178 that results in a premature stop codon mutation in codon 203. Postmortem examination revealed numerous irregularly shaped coarse PrP deposits and multicentric plaques in the brain that were mainly comprised of C-terminal deleted abnormal PrP primarily derived from the mutant allele. Additionally, abnormal PrP deposits were detected in almost all other examined organs. PrP was mainly deposited in peripheral nerves, smooth muscles, and blood vessels in non-CNS tissues. Western blot analysis after proteinase K treatment showed protease-resistant PrP (PrPres) signals with a molecular weight of 9 kDa; weak PrPres smear signals of 9 to 80 kDa were also noted. Gel filtration revealed that PrPres oligomers were mainly composed of the PrP fragments. In conclusion, the mutated PrP lacking that GPI anchor was truncated shortly and deposited in almost every examined organ.
AB - Prion protein (PrP) has 2 glycosylated sites and a glycosylphosphatidylinositol (GPI) anchor on the C-terminal. Reports on genetic prion disease with GPI anchorless PrP are very limited. In this study, we characterized the molecular alterations of mutated PrP in a 37-year-old female autopsy case with a recently identified PRNP mutation involving a 2-bp deletion in codon 178 that results in a premature stop codon mutation in codon 203. Postmortem examination revealed numerous irregularly shaped coarse PrP deposits and multicentric plaques in the brain that were mainly comprised of C-terminal deleted abnormal PrP primarily derived from the mutant allele. Additionally, abnormal PrP deposits were detected in almost all other examined organs. PrP was mainly deposited in peripheral nerves, smooth muscles, and blood vessels in non-CNS tissues. Western blot analysis after proteinase K treatment showed protease-resistant PrP (PrPres) signals with a molecular weight of 9 kDa; weak PrPres smear signals of 9 to 80 kDa were also noted. Gel filtration revealed that PrPres oligomers were mainly composed of the PrP fragments. In conclusion, the mutated PrP lacking that GPI anchor was truncated shortly and deposited in almost every examined organ.
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U2 - 10.1093/jnen/nlw077
DO - 10.1093/jnen/nlw077
M3 - Article
AN - SCOPUS:84996484125
VL - 75
SP - 1008
EP - 1019
JO - Journal of Neuropathology and Experimental Neurology
JF - Journal of Neuropathology and Experimental Neurology
SN - 0022-3069
IS - 11
ER -