Cited by 429Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

Gain of toxic apolipoprotein E4 effects in human iPSC-derived neurons is ameliorated by a small-molecule structure corrector

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Wang, Chengzhong, Najm, Ramsey, Xu, Qin, Jeong, Dah-eun, Walker, David, Balestra, Maureen E., Yoon, Seo Yeon, Yuan, Heidi +5 more·2018·Nature Medicine

Abstract

Efforts to develop drugs for Alzheimer's disease (AD) have shown promise in animal studies, only to fail in human trials, suggesting a pressing need to study AD in human model systems. Using human neurons derived from induced pluripotent stem cells that expressed apolipoprotein E4 (ApoE4), a variant of the APOE gene product and the major genetic risk factor for AD, we demonstrated that ApoE4-expressing neurons had higher levels of tau phosphorylation, unrelated to their increased production of amyloid-β (Aβ) peptides, and that they displayed GABAergic neuron degeneration. ApoE4 increased Aβ production in human, but not in mouse, neurons. Converting ApoE4 to ApoE3 by gene editing rescued these phenotypes, indicating the specific effects of ApoE4. Neurons that lacked APOE behaved similarly to those expressing ApoE3, and the introduction of ApoE4 expression recapitulated the pathological phenotypes, suggesting a gain of toxic effects from ApoE4. Treatment of ApoE4-expressing neurons with a small-molecule structure corrector ameliorated the detrimental effects, thus showing that correcting the pathogenic conformation of ApoE4 is a viable therapeutic approach for ApoE4-related AD.

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  • Late-stage neuropathological features, such as formation of insoluble tau and neurodegeneration, have not been reported in iPSC-derived neurons from individuals with AD.

    “but late-stage neuropathological features, such as formation of insoluble tau and neurodegeneration have not been reported.”

    From Modeling late-onset Alzheimer’s disease neuropathology via direct neuronal reprogramming (2024) · cites this paper as [17]

    The Results section, “ApoE4 causes GABAergic neuron degeneration/loss in hiPSC-derived neuronal culture” (page unavailable), reports degeneration and apoptotic death in human iPSC-derived GABAergic neurons—contrary to the claim that neurodegeneration has not been reported. The passages report phosphorylated tau, but do not establish formation of insoluble tau. (LLM, conf=0.90)

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  • iPSC-derived neurons from individuals with AD exhibit increased production of Aβ42, active GSK-3β, phosphorylated tau, endosomal abnormalities, and oxidative stress.

    “iPSC-derived neurons from individuals with AD exhibit increased production of Aβ42, active GSK-3β, phosphorylated tau, endosomal abnormalities, and oxidative stress (12–17)”

    From Modeling late-onset Alzheimer’s disease neuropathology via direct neuronal reprogramming (2024) · cites this paper as [17]

    The Results report increased Aβ42 secretion and phosphorylated tau in human iPSC-derived apoE4/4 neurons compared with apoE3/3 neurons. The paper does not report increased active GSK-3β, endosomal abnormalities, or oxidative stress in those neurons; its comparison is by apoE genotype, not broadly between individuals with and without AD. Page numbers are not available in our copy. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • APOE4 exacerbates AD-related pathologies, including amyloid-beta plaques, Tau tangles, neurodegeneration and neuroinflammation.

    “It exacerbates AD-related pathologies, including amyloid-beta (Aβ) plaques, Tau tangles, neurodegeneration and neuroinflammation4–16.”

    From The APOE-R136S mutation protects against APOE4-driven tau pathology, neurodegeneration, and neuroinflammation (2023) · cites this paper as [6]

    The Introduction associates apoE4 with increased amyloid plaques and tau tangles. The Discussion reports increased Aβ production, tau phosphorylation, and GABAergic neuron degeneration in apoE4 cultures. The passages do not address neuroinflammation, so that part of the claim is unsupported by this source. Page numbers were not available in our copy. (LLM, conf=0.87)

    Experimental — accuracy not yet measured
  • APOE3 genotype leads to higher total APOE levels compared to APOE4 genotype.

    “Research in animal models (Bien-Ly et al., 2012) and hiPSC-based models (Wang et al., 2018) has indicated that the APOE3 genotype leads to higher total APOE levels compared to the APOE4 genotype.”

    From Isogenic human stem cell models reveal mutation-dependent protective mechanisms of APOE3 Christchurch (2026) · cites this paper as Wang et al., 2018

    The Results section on apoE production (page unavailable) reports that apoE4/4 hiPSC-derived neurons had less full-length intracellular and secreted apoE than apoE3/3 neurons. It also reports more apoE fragments in apoE4/4 neurons, so the comparison supports higher full-length apoE with APOE3 but does not establish higher total apoE across full-length protein and fragments. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • APOE genotypes might influence GABAergic interneuron generation and survival.

    “Previous studies with mouse (Andrews-Zwilling et al., 2010) and hiPSC-based (Wang et al., 2018) systems have shown that APOE genotypes might influence GABAergic interneuron generation and survival.”

    From Isogenic human stem cell models reveal mutation-dependent protective mechanisms of APOE3 Christchurch (2026) · cites this paper as Wang et al., 2018

    The Results section reports greater degeneration and apoptotic death of APOE4/4-derived GABAergic neurons than APOE3/3-derived neurons, supporting an effect on survival. It also reports no early difference in GABA-positive neuron numbers and says the effect is not developmental, so this study does not support an effect on interneuron generation. (LLM, conf=0.88)

    Experimental — accuracy not yet measured

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Authors
Wang, C., Najm, R., Xu, Q., Jeong, D.-E., Walker, D., Balestra, M. E., Yoon, S. Y., Yuan, H., Li, G., Miller, Z. A., Miller, B. L., Malloy, M. J., & Huang, Y.
Affiliations
  • Gladstone Institutes (US)
  • University of California, San Francisco (US)
Corresponding author
Huang, Yadong
Venue
Nature Medicine
Published
2018-04-09
Volume
24
Issue
5
Pages
647-657
ISSN
  • 1078-8956 (ISSN-L)
  • 1546-170X
OpenAlex
W2798230823
Cited by
428
References
62
Citations by year
2026: 36 · 2025: 45 · 2024: 69 · 2023: 57 · 2022: 54 · 2021: 48 · 2020: 58 · 2019: 42 · 2018: 18
FWCI
28.54
Type
journal article
Language
en
Open access
Locations
  • Nature Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • California Institute for Regenerative Medicine (TRAN1-09394, RN2-00952)
  • Roddenberry Foundation
  • National Institutes of Health (AG023501)
  • National Institute on Aging (RF1AG048030, R01AG056305, K23AG048291, R01AG048017, P50AG023501)
  • National Institute of Allergy and Infectious Diseases (P30AI027763)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
APOE ε4, Alzheimer's disease, gain-of-function, iPSC-derived neurons, tau phosphorylation, amyloid-beta production, genome editing, APOE3, human disease models, therapeutic target
MeSH terms
Gene Editing, Alzheimer Disease, Cell Line, Cells, Cultured, Homozygote, Humans, Nerve Degeneration, Neurons, Phosphorylation, Amyloid beta-Peptides, tau Proteins, Protein Isoforms, Apolipoprotein E3, Apolipoprotein E4, Small Molecule Libraries, Induced Pluripotent Stem Cells, GABAergic Neurons

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