Two mouse models of Alzheimer's disease accumulate amyloid at different rates and have distinct Aβ oligomer profiles unaltered by ablation of cellular prion protein.
Oligomers formed from monomers of the amyloid β-protein (Aβ) are thought to be central to the pathogenesis of Alzheimer's disease (AD). Unsurprisingly for a complex disease, current mouse models of AD fail to fully mimic the clinical disease in humans. Moreover, results obtained in a given mous...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2023-01-01
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| Series: | PLoS ONE |
| Online Access: | https://doi.org/10.1371/journal.pone.0294465 |
| _version_ | 1797394626659745792 |
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| author | Silvia A Purro Michael Farmer Elizabeth Noble Claire J Sarell Megan Powell Daniel Yip Lauren Giggins Leila Zakka David X Thomas Mark Farrow Andrew J Nicoll Dominic Walsh John Collinge |
| author_facet | Silvia A Purro Michael Farmer Elizabeth Noble Claire J Sarell Megan Powell Daniel Yip Lauren Giggins Leila Zakka David X Thomas Mark Farrow Andrew J Nicoll Dominic Walsh John Collinge |
| author_sort | Silvia A Purro |
| collection | DOAJ |
| description | Oligomers formed from monomers of the amyloid β-protein (Aβ) are thought to be central to the pathogenesis of Alzheimer's disease (AD). Unsurprisingly for a complex disease, current mouse models of AD fail to fully mimic the clinical disease in humans. Moreover, results obtained in a given mouse model are not always reproduced in a different model. Cellular prion protein (PrPC) is now an established receptor for Aβ oligomers. However, studies of the Aβ-PrPC interaction in different mouse models have yielded contradictory results. Here we performed a longitudinal study assessing a range of biochemical and histological features in the commonly used J20 and APP-PS1 mouse models. Our analysis demonstrated that PrPC ablation had no effect on amyloid accumulation or oligomer production. However, we found that APP-PS1 mice had higher levels of oligomers, that these could bind to recombinant PrPC, and were recognised by the OC antibody which distinguishes parallel, in register fibrils. On the other hand, J20 mice had a lower level of Aβ oligomers, which did not interact with PrPC when tested in vitro and were OC-negative. These results suggest the two mouse models produce diverse Aβ assemblies that could interact with different targets, highlighting the necessity to characterise the conformation of the Aβ oligomers concomitantly with the toxic cascade elicited by them. Our results provide an explanation for the apparent contradictory results found in APP-PS1 mice and the J20 mouse line in regards to Aβ toxicity mediated by PrPC. |
| first_indexed | 2024-03-09T00:22:30Z |
| format | Article |
| id | doaj.art-8af80f9aedd94ca28f2439779fee4821 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-03-09T00:22:30Z |
| publishDate | 2023-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-8af80f9aedd94ca28f2439779fee48212023-12-12T05:33:51ZengPublic Library of Science (PLoS)PLoS ONE1932-62032023-01-011811e029446510.1371/journal.pone.0294465Two mouse models of Alzheimer's disease accumulate amyloid at different rates and have distinct Aβ oligomer profiles unaltered by ablation of cellular prion protein.Silvia A PurroMichael FarmerElizabeth NobleClaire J SarellMegan PowellDaniel YipLauren GigginsLeila ZakkaDavid X ThomasMark FarrowAndrew J NicollDominic WalshJohn CollingeOligomers formed from monomers of the amyloid β-protein (Aβ) are thought to be central to the pathogenesis of Alzheimer's disease (AD). Unsurprisingly for a complex disease, current mouse models of AD fail to fully mimic the clinical disease in humans. Moreover, results obtained in a given mouse model are not always reproduced in a different model. Cellular prion protein (PrPC) is now an established receptor for Aβ oligomers. However, studies of the Aβ-PrPC interaction in different mouse models have yielded contradictory results. Here we performed a longitudinal study assessing a range of biochemical and histological features in the commonly used J20 and APP-PS1 mouse models. Our analysis demonstrated that PrPC ablation had no effect on amyloid accumulation or oligomer production. However, we found that APP-PS1 mice had higher levels of oligomers, that these could bind to recombinant PrPC, and were recognised by the OC antibody which distinguishes parallel, in register fibrils. On the other hand, J20 mice had a lower level of Aβ oligomers, which did not interact with PrPC when tested in vitro and were OC-negative. These results suggest the two mouse models produce diverse Aβ assemblies that could interact with different targets, highlighting the necessity to characterise the conformation of the Aβ oligomers concomitantly with the toxic cascade elicited by them. Our results provide an explanation for the apparent contradictory results found in APP-PS1 mice and the J20 mouse line in regards to Aβ toxicity mediated by PrPC.https://doi.org/10.1371/journal.pone.0294465 |
| spellingShingle | Silvia A Purro Michael Farmer Elizabeth Noble Claire J Sarell Megan Powell Daniel Yip Lauren Giggins Leila Zakka David X Thomas Mark Farrow Andrew J Nicoll Dominic Walsh John Collinge Two mouse models of Alzheimer's disease accumulate amyloid at different rates and have distinct Aβ oligomer profiles unaltered by ablation of cellular prion protein. PLoS ONE |
| title | Two mouse models of Alzheimer's disease accumulate amyloid at different rates and have distinct Aβ oligomer profiles unaltered by ablation of cellular prion protein. |
| title_full | Two mouse models of Alzheimer's disease accumulate amyloid at different rates and have distinct Aβ oligomer profiles unaltered by ablation of cellular prion protein. |
| title_fullStr | Two mouse models of Alzheimer's disease accumulate amyloid at different rates and have distinct Aβ oligomer profiles unaltered by ablation of cellular prion protein. |
| title_full_unstemmed | Two mouse models of Alzheimer's disease accumulate amyloid at different rates and have distinct Aβ oligomer profiles unaltered by ablation of cellular prion protein. |
| title_short | Two mouse models of Alzheimer's disease accumulate amyloid at different rates and have distinct Aβ oligomer profiles unaltered by ablation of cellular prion protein. |
| title_sort | two mouse models of alzheimer s disease accumulate amyloid at different rates and have distinct aβ oligomer profiles unaltered by ablation of cellular prion protein |
| url | https://doi.org/10.1371/journal.pone.0294465 |
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