Cited by 187Alzheimer's disease research and treatmentsMemory and Neural MechanismsNeural dynamics and brain function

Apolipoprotein E4 Causes Age-Dependent Disruption of Slow Gamma Oscillations during Hippocampal Sharp-Wave Ripples

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Gillespie, Anna K., Jones, Emily A., Lin, Yuan-Hung, Karlsson, Mattias P., Kay, Kenneth, Yoon, Seo Yeon, Tong, Leslie M., Nova, Philip +3 more·2016·Neuron

Abstract

Apolipoprotein (apo) E4 is the major genetic risk factor for Alzheimer's disease (AD), but the mechanism by which it causes cognitive decline is unclear. In knockin (KI) mice, human apoE4 causes age-dependent learning and memory impairments and degeneration of GABAergic interneurons in the hippocampal dentate gyrus. Here we report two functional apoE4-KI phenotypes involving sharp-wave ripples (SWRs), hippocampal network events critical for memory processes. Aged apoE4-KI mice had fewer SWRs than apoE3-KI mice and significantly reduced slow gamma activity during SWRs. Elimination of apoE4 in GABAergic interneurons, which prevents learning and memory impairments, rescued SWR-associated slow gamma activity but not SWR abundance in aged mice. SWR abundance was reduced similarly in young and aged apoE4-KI mice; however, the full SWR-associated slow gamma deficit emerged only in aged apoE4-KI mice. These results suggest that progressive decline of interneuron-enabled slow gamma activity during SWRs critically contributes to apoE4-mediated learning and memory impairments. VIDEO ABSTRACT.

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Authors
Gillespie, A. K., Jones, E. A., Lin, Y.-H., Karlsson, M. P., Kay, K., Yoon, S. Y., Tong, L. M., Nova, P., Carr, J. S., Frank, L. M., & Huang, Y.
Affiliations
  • Gladstone Institutes (US)
  • University of California, San Francisco (US)
Corresponding author
Huang, Yadong
Venue
Neuron
Publisher
Elsevier BV
Published
2016-05
Volume
90
Issue
4
Pages
740-751
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2346016739
Cited by
187
References
57
Citations by year
2026: 13 · 2025: 23 · 2024: 16 · 2023: 20 · 2022: 28 · 2021: 24 · 2020: 19 · 2019: 13 · 2018: 11 · 2017: 12 · 2016: 8
FWCI
11.81
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • McKnight Foundation
  • Achievement Rewards for College Scientists Foundation
  • Hellman Foundation
  • National Institutes of Health (1c06rr018928-01)
  • National Institute on Aging (RF1AG047655, R01AG048017)
  • National Institute of Mental Health (R01MH105174, R01MH090188)
  • National Institute of General Medical Sciences (T32GM007618)
  • National Center for Research Resources (C06-RR-018928)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (T32HD007470)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
Keywords
APOE ε4, Alzheimer's disease, sharp-wave ripples, hippocampus, GABAergic interneurons, dentate gyrus, aging, learning and memory impairment
MeSH terms
Aging, Alzheimer Disease, Animals, Cognition Disorders, Disease Models, Animal, Hippocampus, Interneurons, Memory Disorders, Mice, Transgenic, Maze Learning, Apolipoprotein E4, Gene Knock-In Techniques

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