Article (Scientific journals)
Silencing Apoe with divalent-siRNAs improves amyloid burden and activates immune response pathways in Alzheimer's disease.
Ferguson, Chantal M; Hildebrand, Samuel; Godinho, Bruno M D C et al.
2024In Alzheimer's and Dementia: the Journal of the Alzheimer's Association, 20 (4), p. 2632 - 2652
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Keywords :
Alzheimer's Disease; Apoe; RNAi; neurodegeneration; oligonucleotide therapeutics; siRNA; RNA, Small Interfering; Apolipoproteins E; Apolipoprotein E4; Amyloid; Amyloidogenic Proteins; Amyloid beta-Peptides; Mice; Animals; RNA, Small Interfering/genetics; RNA, Small Interfering/metabolism; Apolipoproteins E/genetics; Apolipoproteins E/metabolism; Apolipoprotein E4/genetics; Amyloid/metabolism; Brain/pathology; Amyloidogenic Proteins/metabolism; Amyloid beta-Peptides/metabolism; Mice, Transgenic; Alzheimer Disease/pathology; Brain; Epidemiology; Health Policy; Developmental Neuroscience; Neurology (clinical); Geriatrics and Gerontology; Cellular and Molecular Neuroscience; Psychiatry and Mental Health
Abstract :
[en] [en] INTRODUCTION: The most significant genetic risk factor for late-onset Alzheimer's disease (AD) is APOE4, with evidence for gain- and loss-of-function mechanisms. A clinical need remains for therapeutically relevant tools that potently modulate APOE expression. METHODS: We optimized small interfering RNAs (di-siRNA, GalNAc) to potently silence brain or liver Apoe and evaluated the impact of each pool of Apoe on pathology. RESULTS: In adult 5xFAD mice, siRNAs targeting CNS Apoe efficiently silenced Apoe expression and reduced amyloid burden without affecting systemic cholesterol, confirming that potent silencing of brain Apoe is sufficient to slow disease progression. Mechanistically, silencing Apoe reduced APOE-rich amyloid cores and activated immune system responses. DISCUSSION: These results establish siRNA-based modulation of Apoe as a viable therapeutic approach, highlight immune activation as a key pathway affected by Apoe modulation, and provide the technology to further evaluate the impact of APOE silencing on neurodegeneration.
Disciplines :
Neurology
Author, co-author :
Ferguson, Chantal M ;  RNA Therapeutics Institute, University of Massachusetts Medical School, Worcester, Massachusetts, USA
Hildebrand, Samuel;  RNA Therapeutics Institute, University of Massachusetts Medical School, Worcester, Massachusetts, USA
Godinho, Bruno M D C;  RNA Therapeutics Institute, University of Massachusetts Medical School, Worcester, Massachusetts, USA
Buchwald, Julianna;  RNA Therapeutics Institute, University of Massachusetts Medical School, Worcester, Massachusetts, USA
Echeverria, Dimas;  RNA Therapeutics Institute, University of Massachusetts Medical School, Worcester, Massachusetts, USA
Coles, Andrew;  RNA Therapeutics Institute, University of Massachusetts Medical School, Worcester, Massachusetts, USA
Grigorenko, Anastasia;  Department of Psychiatry, University of Massachusetts Medical School, Worcester, Massachusetts, USA
Vangjeli, Lorenc;  RNA Therapeutics Institute, University of Massachusetts Medical School, Worcester, Massachusetts, USA
Sousa, Jacquelyn;  RNA Therapeutics Institute, University of Massachusetts Medical School, Worcester, Massachusetts, USA
McHugh, Nicholas;  RNA Therapeutics Institute, University of Massachusetts Medical School, Worcester, Massachusetts, USA
Hassler, Matthew;  RNA Therapeutics Institute, University of Massachusetts Medical School, Worcester, Massachusetts, USA
Santarelli, Francesco;  Luxembourg Centre for Systems Biomedicine (LCSB), Esch-sur-Alzette, Luxembourg
HENEKA, Michael  ;  University of Luxembourg > Luxembourg Centre for Systems Biomedicine (LCSB) ; Luxembourg Centre for Systems Biomedicine (LCSB), Esch-sur-Alzette, Luxembourg
Rogaev, Evgeny;  Department of Psychiatry, University of Massachusetts Medical School, Worcester, Massachusetts, USA
Khvorova, Anastasia;  RNA Therapeutics Institute, University of Massachusetts Medical School, Worcester, Massachusetts, USA
More authors (5 more) Less
External co-authors :
yes
Language :
English
Title :
Silencing Apoe with divalent-siRNAs improves amyloid burden and activates immune response pathways in Alzheimer's disease.
Publication date :
April 2024
Journal title :
Alzheimer's and Dementia: the Journal of the Alzheimer's Association
ISSN :
1552-5260
eISSN :
1552-5279
Publisher :
John Wiley and Sons Inc, United States
Volume :
20
Issue :
4
Pages :
2632 - 2652
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
Norfolk Southern
Norfolk Southern
Norfolk Southern
Norfolk Southern
Funding text :
We would like to thank Dr Arya Biragyn, NIA, for gifting us AD mouse strains, and the Animal Medicine Group at UMass Chan Medical School. We would like to thank Emily Haberlin and Darryl Conte for editing the manuscript. This work was supported by NS 104022, GM-131839, S10 OD020012, and ADDF 20170101/Rogaev; National Research Service Award 1F30AG066373-01, and T32GM107000.We would like to thank Dr Arya Biragyn, NIA, for gifting us AD mouse strains, and the Animal Medicine Group at UMass Chan Medical School. We would like to thank Emily Haberlin and Darryl Conte for editing the manuscript. This work was supported by NS 104022, GM\u2010131839, S10 OD020012, and ADDF 20170101/Rogaev; National Research Service Award 1F30AG066373\u201001, and T32GM107000.
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