Cited by 213Alzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration MechanismsBarrier Structure and Function Studies

Glial fibrillary acidic protein-apolipoprotein E (apoE) transgenic mice: astrocyte-specific expression and differing biological effects of astrocyte-secreted apoE3 and apoE4 lipoproteins.

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Sun, Yuling, Wu, Shan, Bu, Guojun, Onifade, Moyosore K., Patel, Shilen N., LaDu, Mary Jo, Fagan, Anne M., Holtzman, David M.·1998·The Journal of Neuroscience

Abstract

The ε4 allele of apolipoprotein E (apoE) is associated with increased risk for Alzheimer’s disease (AD) and poor outcome after brain injury. In the CNS, apoE is expressed by glia, predominantly astrocytes. To define the potential biological functions of different human apoE isoforms produced within the brain, transgenic mice were generated in which human apoE3 and apoE4 expression is under control of the astrocyte-specific glial fibrillary acidic protein (GFAP) promoter. These animals were then bred back to apoE knock-out mice. Human apoE protein is found within astrocytes and the neuropil throughout development and into the adult period, as assessed by immunocytochemistry and immunoblot analysis in several GFAP-apoE3 and E4 lines. Cultured astrocytes from these mice secrete apoE3 and apoE4 in lipoproteins that are high-density lipoprotein-like in size. When primary hippocampal neurons are grown in the presence of astrocyte monolayers derived from these transgenic mice, there is significantly greater neurite outgrowth from neurons grown in the presence of apoE3-secreting astrocytes compared with apoE4-secreting or apoE knock-out astrocytes. These effects are not dependent on direct astrocyte–neuron contact and appear to require the low-density lipoprotein receptor-related protein. These data suggest that astrocyte-secreted, apoE3-containing lipoproteins have different biological effects than apoE4-containing lipoproteins. In addition to providing information regarding the role of astrocyte-secreted apoE lipoproteins in the normal brain, these animals will also be useful in models of both AD and CNS injury.

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Crossref · 10.1523/jneurosci.18-09-03261.1998

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  • Most studies have demonstrated that apoE3 isoform promotes neurite outgrowth in primary embryonic and adult cortical neurons, as well as neuronal cell lines.

    “Most studies have demonstrated that apoE3 isoform promotes neurite outgrowth in primary embryonic and adult cortical neurons, as well as neuronal cell lines (Nathan et al., 1994; 2002; Sun et al., 1998).”

    From Apolipoprotein E in Synaptic Plasticity and Alzheimer’s Disease: Potential Cellular and Molecular Mechanisms (2014) · cites this paper as Sun et al., 1998

    The Results report greater neurite outgrowth in embryonic day 19 primary hippocampal neurons exposed to apoE3-expressing astrocytes, and summarize previous findings in neuronal cell lines. The paper does not establish the claimed effect in primary embryonic or adult cortical neurons; its own primary-neuron experiments used embryonic hippocampal neurons. (LLM, conf=0.88)

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  1. Schmechel DE, Saunders AM, Strittmatter WJ, Crain BJ, Hulette CM, Joo SH, Pericak-Vance M A, Goldgaber D, Roses AD (1993) In- creased amyloid ␤-peptide deposition in cerebral cortex as a conse- quence of apolipoprotein genotype in late-onset Alzheimer disease. Proc Natl Acad Sci USA 90:9649 -9653.
  2. Xu P-T, Schmechel D, Rothrock-Christian T, Burkhart DS, Qiu H-L, Popko B, Sullivan P, Maeda N, Saunders AM, Roses AD, Gilbert JR (1996) Human apolipoprotein E2, E3, and E4 isoform-specific transgenic mice: human-like pattern of glial and neuronal immuno- reactivity in C NS not observed in wild-type mice. Neurobiol Dis 3:229 -245.

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Authors
Sun, Y., Wu, S., Bu, G., Onifade, M. K., Patel, S. N., LaDu, M. J., Fagan, A. M., & Holtzman, D. M.
Affiliations
  • Washington University in St. Louis (US)
  • University of Chicago (US)
Venue
The Journal of Neuroscience
Published
1998-05-01
Volume
18
Issue
9
Pages
3261-3272
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W1629602451
Cited by
213
References
81
Citations by year
2026: 1 · 2025: 3 · 2024: 3 · 2023: 1 · 2022: 6 · 2021: 6 · 2020: 5 · 2019: 4 · 2018: 4 · 2017: 7 · 2016: 2 · 2015: 2 · 2014: 7 · 2013: 1 · 2012: 1
FWCI
12.91
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Rare & Special e-Zone (The Hong Kong University of Science and Technology) (submittedVersion)
Funders
  • Alzheimer's Association (AG05681, AG13956)
  • National Institutes of Health (AG05681, AG13956)
  • National Institute on Aging (R01AG013956, AG 05681, P50AG005681, R37AG013956, AG13956)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Life Sciences › Neuroscience › Neurology › Barrier Structure and Function Studies
Keywords
apolipoprotein E, APOE3, APOE ε4, astrocytes, glial fibrillary acidic protein, neurite outgrowth, hippocampal neurons, low density lipoprotein receptor-related protein, Alzheimer's disease, central nervous system injury, astrocyte-neuron interaction
MeSH terms
Animals, Apolipoproteins E, Astrocytes, Brain, Cells, Cultured, Gene Expression Regulation, Glial Fibrillary Acidic Protein, Humans, Mice, Transgenic, Particle Size, Mice, Apolipoprotein E3, Apolipoprotein E4

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