Vascular ApoE4 impairs behavior by modulating gliovascular function
Open accessAbstract
The ε4 allele of the apolipoprotein E gene (APOE4) is a strong genetic risk factor for Alzheimer's disease (AD) and multiple vascular conditions. ApoE is abundantly expressed in multiple brain cell types, including astrocytes, microglia, and vascular mural cells (VMCs). Here, we show that VMC-specific expression of apoE4 in mice impairs behavior and cerebrovascular function. Expression of either apoE3 or apoE4 in VMCs was sufficient to rescue the hypercholesterolemia and atherosclerosis phenotypes seen in Apoe knockout mice. Intriguingly, vascular expression of apoE4, but not apoE3, reduced arteriole blood flow, impaired spatial learning, and increased anxiety-like phenotypes. Single-cell RNA sequencing of vascular and glial cells revealed that apoE4 in VMCs was associated with astrocyte activation, while apoE3 was linked to angiogenic signature in pericytes. Together, our data support cell-autonomous effects of vascular apoE on brain homeostasis in an isoform-dependent manner, suggesting a critical contribution of vascular apoE to AD pathogenesis.
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Specific expression of apoE4, but not apoE3, in vascular mural cells impairs cerebrovascular function and spatial learning in mice.
“specific expression of apoE4, but not apoE3, in vascular mural cells impairs cerebrovascular function and spatial learning in mice”
From ApoE4 reduction: An emerging and promising therapeutic strategy for Alzheimer's disease (2022) · cites this paper as Yamazaki et al 2021
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A molecular atlas of cell types and zonation in the brain vasculature
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“Annotation of Cell Clusters for Specific Cell Type—The annotation of each cluster was manually performed using the datasets for murine cell taxonomy (Saunders et al., 2018; Vanlandewijck et al., 2018).”
BackgroundMethodInfluentialMolecular diversity and specializations among the cells of the adult mouse brain
Saunders, A., Macosko, E. Z., Wysoker, A., Goldman, M., Krienen, F. M., de Rivera, H., Bien, E., Baum, M., Bortolin, L., Wang, S., et al. (2018) · Cell · doi:10.1016/j.cell.2018.07.028 · Cited by 1,847 · cited 1× · see citing works
“Annotation of Cell Clusters for Specific Cell Type—The annotation of each cluster was manually performed using the datasets for murine cell taxonomy (Saunders et al., 2018; Vanlandewijck et al., 2018).”
MethodApolipoprotein E controls cerebrovascular integrity via cyclophilin A
Bell, R. D., Winkler, E. A., Singh, I., Sagare, A. P., Deane, R., Wu, Z., Holtzman, D. M., Betsholtz, C., Armulik, A., Sallstrom, J., et al. (2012) · Nature · doi:10.1038/nature11087 · Cited by 1,293 · cited 1× · see citing works
“, 1995), BBB dysfunction (Bell et al., 2012; Fullerton et al., 2001), and hypercholesterolemia are reported in the absence of murine apoE.”
BackgroundSullivan, P. M., Mezdour, H., Aratani, Y., Knouff, C., Najib, J., Reddick, R. L., Quarfordt, S. H., & Maeda, N. (1997) · Journal of Biological Chemistry · doi:10.1074/jbc.272.29.17972 · Cited by 575 · see citing works
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Vascular Cell Senescence Contributes to Blood–Brain Barrier Breakdown
Yamazaki, Y., Baker, D. J., Tachibana, M., Liu, C.-C., van Deursen, J. M., Brott, T. G., Bu, G., & Kanekiyo, T. (2016) · Stroke · doi:10.1161/strokeaha.115.010835 · Cited by 263 · see citing works
Self-citationGetz, G. S., & Reardon, C. A. (2016) · Arteriosclerosis, Thrombosis, and Vascular Biology · doi:10.1161/atvbaha.116.306874 · Cited by 198 · see citing works
APOE ε2 is associated with increased tau pathology in primary tauopathy
Zhao, N., Liu, C.-C., Van Ingelgom, A. J., Linares, C., Kurti, A., Knight, J. A., Heckman, M. G., Diehl, N. N., Shinohara, M., Martens, Y. A., et al. (2018) · Nature Communications · doi:10.1038/s41467-018-06783-0 · Cited by 139 · cited 2× · see citing works
“Cognitive and Behavioral Tests—Contextual and cued fear conditioning (CFC), Morris water maze (MWM), open-field assay (OFA) and elevated plus maze (EPM) tests were performed as described (Kang et al., 2018; Sakae et al., 2016; Zhao et al., 2018).”
MethodSelf-citationYamazaki, Y., Shinohara, M., Yamazaki, A., Ren, Y., Asmann, Y. W., Kanekiyo, T., & Bu, G. (2020) · Arteriosclerosis, Thrombosis, and Vascular Biology · doi:10.1161/atvbaha.119.313169 · Cited by 89 · see citing works
Self-citationBehavioral and transcriptomic analysis of Trem2-null mice: not all knockout mice are created equal
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- Authors
- Yamazaki, Y., Liu, C.-C., Yamazaki, A., Shue, F., Martens, Y. A., Chen, Y., Qiao, W., Kurti, A., Oue, H., Ren, Y., Li, Y., Aikawa, T., Cherukuri, Y., Fryer, J. D., Asmann, Y. W., Kim, B. Y. S., Kanekiyo, T., & Bu, G.
- Affiliations
- Mayo Clinic (US)
- Mayo Clinic in Arizona (US)
- The University of Texas MD Anderson Cancer Center (US)
- Corresponding author
- Bu, Guojun
- ORCID
- Venue
- Neuron
- Publisher
- Elsevier BV
- Published
- 2021-02
- Volume
- 109
- Issue
- 3
- Pages
- 438-447.e6
- ISSN
- 0896-6273 (ISSN-L)
- PMC
- PMC7864888
- OpenAlex
- W3111488141
- Cited by
- 71
- References
- 11
- Citations by year
- 2026: 13 · 2025: 9 · 2024: 15 · 2023: 16 · 2022: 13 · 2021: 5
- FWCI
- 4.95
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Licence
- Locations
- Neuron (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- Rare & Special e-Zone (The Hong Kong University of Science and Technology) (submittedVersion)
- Funders
- National Institutes of Health
- Topics
- Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
- Life Sciences › Neuroscience › Neurology › Barrier Structure and Function Studies
- Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
- Keywords
- apolipoprotein E, APOE ε4, APOE3, vascular mural cells, cerebrovascular function, Alzheimer's disease, hypercholesterolemia, atherosclerosis, spatial learning, anxiety-like behavior, astrocyte activation, pericytes, angiogenesis
- MeSH terms
- Animals, Arterioles, Astrocytes, Brain, Gliosis, Mice, Transgenic, Mice, Apolipoprotein E3, Apolipoprotein E4
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