Cited by 95Alzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration MechanismsDementia and Cognitive Impairment Research

Targeted BACE-1 inhibition in microglia enhances amyloid clearance and improved cognitive performance

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Singh, Neeraj, Das, Brati, Zhou, John, Hu, Xiangyou, Yan, Riqiang·2022·Science Advances

Abstract

Abnormal accumulation of β-amyloid (Aβ) peptides is a culprit in Alzheimer’s disease (AD); blocking Aβ generation is therefore being explored as a logical approach for AD treatment. Here, we demonstrate that targeted inhibition of β-site amyloid precursor protein (APP) cleaving enzyme-1 (BACE-1) in microglia has unique advantages. When Bace-1 was deleted in Alzheimer’s 5xFAD microglia, fewer amyloid plaques developed, and this reduction was not due to changes in APP processing but rather to enhanced Aβ clearance, in line with the increase in a microglial gene signature favoring phagocytosis. Moreover, deletion of Bace-1 in microglia enhances functions of autophagolysosomes and Aβ-induced metabolic reprogramming necessary for Aβ degradation by favoring phosphorylation of mammalian target of rapamycin complex (mTOR) at Ser 2448 and modulating the PI3K–mTOR–HIF-1α signaling pathways. Mice with deletion of Bace-1 in microglia showed no reduction in long-term potentiation, unlike global deletion of Bace-1 . Our results suggest that targeted inhibition of BACE-1 in microglia is a superior strategy for AD treatment.

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  • BACE-1 inhibition in microglia facilitates transition from homeostatic to DAM-1 signature and enhances amyloid clearance and improves cognitive performance in AD mice.

    “BACE-1 inhibition in microglia facilitated the microglia phenotype transition from homeostatic to stage 1 disease-associated microglia (DAM-1) signature148 and thus enhanced amyloid clearance and improved cognitive performance in AD mice.”

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Authors
Singh, N., Das, B., Zhou, J., Hu, X., & Yan, R.
Affiliations
UConn Health (US)
Corresponding author
Yan, Riqiang
Venue
Science Advances
Published
2022-07-22
Volume
8
Issue
29
Pages
eabo3610-eabo3610
ISSN
2375-2548 (ISSN-L)
OpenAlex
W4285987586
Cited by
95
References
39
Citations by year
2026: 25 · 2025: 27 · 2024: 25 · 2023: 13 · 2022: 5
FWCI
10.82
Type
journal article
Language
en
Open access
Licence
cc-by-nc
Locations
  • Science Advances (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
Funders
  • National Institute on Aging (R01AG025493, RF1AG046929, RF1AG058261, RF1AG025493, R01AG046929)
  • National Institute of Neurological Disorders and Stroke (RF1NS074256, R01NS074256)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
Keywords
BACE1, microglia, Alzheimer's disease, amyloid-beta clearance, amyloid plaques, 5xFAD mice, phagocytosis, autophagolysosomes, mTOR phosphorylation, metabolic reprogramming, long-term potentiation, cognitive function
MeSH terms
Alzheimer Disease, Amyloid, Animals, Cognition, Mammals, Amyloid beta-Peptides, Aspartic Acid Endopeptidases, Amyloid beta-Protein Precursor, Microglia, Mice, Amyloid Precursor Protein Secretases, TOR Serine-Threonine Kinases

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