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Two distinct conformers of PrP(D) type 1 of sporadic Creutzfeldt–Jakob disease with codon 129VV genotype faithfully propagate in vivo
Current classifications of sporadic Creutzfeldt–Jakob disease (sCJD) identify five subtypes associated with different disease phenotypes. Most of these histopathological phenotypes (histotypes) co-distribute with distinct pairings of methionine (M)/valine (V) genotypes at codon 129 of the prion prot...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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BioMed Central
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7995586/ https://www.ncbi.nlm.nih.gov/pubmed/33766126 http://dx.doi.org/10.1186/s40478-021-01132-7 |
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author | Cali, Ignazio Espinosa, Juan Carlos Nemani, Satish K. Marin-Moreno, Alba Camacho, Manuel V. Aslam, Rabail Kitamoto, Tetsuyuki Appleby, Brian S. Torres, Juan Maria Gambetti, Pierluigi |
author_facet | Cali, Ignazio Espinosa, Juan Carlos Nemani, Satish K. Marin-Moreno, Alba Camacho, Manuel V. Aslam, Rabail Kitamoto, Tetsuyuki Appleby, Brian S. Torres, Juan Maria Gambetti, Pierluigi |
author_sort | Cali, Ignazio |
collection | PubMed |
description | Current classifications of sporadic Creutzfeldt–Jakob disease (sCJD) identify five subtypes associated with different disease phenotypes. Most of these histopathological phenotypes (histotypes) co-distribute with distinct pairings of methionine (M)/valine (V) genotypes at codon 129 of the prion protein (PrP) gene and the type (1 or 2) of the disease-associated PrP (PrP(D)). Types 1 and 2 are defined by the molecular mass (~ 21 kDa and ~ 19 kDa, respectively) of the unglycosylated isoform of the proteinase K-resistant PrP(D) (resPrP(D)). We recently reported that the sCJDVV1 subtype (129VV homozygosity paired with PrP(D) type 1, T1) shows an electrophoretic profile where the resPrP(D) unglycosylated isoform is characterized by either one of two single bands of ~ 20 kDa (T1(20)) and ~ 21 kDa (T1(21)), or a doublet of ~ 21–20 kDa (T1(21−20)). We also showed that T1(20) and T1(21) in sCJDVV have different conformational features but are associated with indistinguishable histotypes. The presence of three distinct molecular profiles of T1 is unique and raises the issue as to whether T1(20) and T1(21) represent distinct prion strains. To answer this question, brain homogenates from sCJDVV cases harboring each of the three resPrP(D) profiles, were inoculated to transgenic (Tg) mice expressing the human PrP-129M or PrP-129V genotypes. We found that T1(20) and T1(21) were faithfully replicated in Tg129V mice. Electrophoretic profile and incubation period of mice challenged with T1(21−20) resembled those of mice inoculated with T1(21) and T1(20), respectively. As in sCJDVV1, Tg129V mice challenged with T1(21) and T1(20) generated virtually undistinguishable histotypes. In Tg129M mice, T1(21) was not replicated while T1(20) and T1(21−20) generated a ~ 21–20 kDa doublet after lengthier incubation periods. On second passage, Tg129M mice incubation periods and regional PrP accumulation significantly differed in T1(20) and T1(21−20) challenged mice. Combined, these data indicate that T1(21) and T1(20) resPrP(D) represent distinct human prion strains associated with partially overlapping histotypes. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s40478-021-01132-7. |
format | Online Article Text |
id | pubmed-7995586 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-79955862021-03-26 Two distinct conformers of PrP(D) type 1 of sporadic Creutzfeldt–Jakob disease with codon 129VV genotype faithfully propagate in vivo Cali, Ignazio Espinosa, Juan Carlos Nemani, Satish K. Marin-Moreno, Alba Camacho, Manuel V. Aslam, Rabail Kitamoto, Tetsuyuki Appleby, Brian S. Torres, Juan Maria Gambetti, Pierluigi Acta Neuropathol Commun Research Current classifications of sporadic Creutzfeldt–Jakob disease (sCJD) identify five subtypes associated with different disease phenotypes. Most of these histopathological phenotypes (histotypes) co-distribute with distinct pairings of methionine (M)/valine (V) genotypes at codon 129 of the prion protein (PrP) gene and the type (1 or 2) of the disease-associated PrP (PrP(D)). Types 1 and 2 are defined by the molecular mass (~ 21 kDa and ~ 19 kDa, respectively) of the unglycosylated isoform of the proteinase K-resistant PrP(D) (resPrP(D)). We recently reported that the sCJDVV1 subtype (129VV homozygosity paired with PrP(D) type 1, T1) shows an electrophoretic profile where the resPrP(D) unglycosylated isoform is characterized by either one of two single bands of ~ 20 kDa (T1(20)) and ~ 21 kDa (T1(21)), or a doublet of ~ 21–20 kDa (T1(21−20)). We also showed that T1(20) and T1(21) in sCJDVV have different conformational features but are associated with indistinguishable histotypes. The presence of three distinct molecular profiles of T1 is unique and raises the issue as to whether T1(20) and T1(21) represent distinct prion strains. To answer this question, brain homogenates from sCJDVV cases harboring each of the three resPrP(D) profiles, were inoculated to transgenic (Tg) mice expressing the human PrP-129M or PrP-129V genotypes. We found that T1(20) and T1(21) were faithfully replicated in Tg129V mice. Electrophoretic profile and incubation period of mice challenged with T1(21−20) resembled those of mice inoculated with T1(21) and T1(20), respectively. As in sCJDVV1, Tg129V mice challenged with T1(21) and T1(20) generated virtually undistinguishable histotypes. In Tg129M mice, T1(21) was not replicated while T1(20) and T1(21−20) generated a ~ 21–20 kDa doublet after lengthier incubation periods. On second passage, Tg129M mice incubation periods and regional PrP accumulation significantly differed in T1(20) and T1(21−20) challenged mice. Combined, these data indicate that T1(21) and T1(20) resPrP(D) represent distinct human prion strains associated with partially overlapping histotypes. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s40478-021-01132-7. BioMed Central 2021-03-25 /pmc/articles/PMC7995586/ /pubmed/33766126 http://dx.doi.org/10.1186/s40478-021-01132-7 Text en © The Author(s) 2021 This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data. |
spellingShingle | Research Cali, Ignazio Espinosa, Juan Carlos Nemani, Satish K. Marin-Moreno, Alba Camacho, Manuel V. Aslam, Rabail Kitamoto, Tetsuyuki Appleby, Brian S. Torres, Juan Maria Gambetti, Pierluigi Two distinct conformers of PrP(D) type 1 of sporadic Creutzfeldt–Jakob disease with codon 129VV genotype faithfully propagate in vivo |
title | Two distinct conformers of PrP(D) type 1 of sporadic Creutzfeldt–Jakob disease with codon 129VV genotype faithfully propagate in vivo |
title_full | Two distinct conformers of PrP(D) type 1 of sporadic Creutzfeldt–Jakob disease with codon 129VV genotype faithfully propagate in vivo |
title_fullStr | Two distinct conformers of PrP(D) type 1 of sporadic Creutzfeldt–Jakob disease with codon 129VV genotype faithfully propagate in vivo |
title_full_unstemmed | Two distinct conformers of PrP(D) type 1 of sporadic Creutzfeldt–Jakob disease with codon 129VV genotype faithfully propagate in vivo |
title_short | Two distinct conformers of PrP(D) type 1 of sporadic Creutzfeldt–Jakob disease with codon 129VV genotype faithfully propagate in vivo |
title_sort | two distinct conformers of prp(d) type 1 of sporadic creutzfeldt–jakob disease with codon 129vv genotype faithfully propagate in vivo |
topic | Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7995586/ https://www.ncbi.nlm.nih.gov/pubmed/33766126 http://dx.doi.org/10.1186/s40478-021-01132-7 |
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