Cited by 282Alzheimer's disease research and treatmentsCholesterol and Lipid MetabolismNeuroinflammation and Neurodegeneration Mechanisms

The DOI matches its Crossref record; 55 of the 55 references it cites were found in a registry or an index.

The Liver X Receptor Ligand T0901317 Decreases Amyloid β Production in Vitro and in a Mouse Model of Alzheimer's Disease

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Abstract

Recent studies indicate that oxysterols, which are ligands for the nuclear hormone liver X receptors (LXR), decrease amyloid beta (Abeta) secretion in vitro. The effect was attributed primarily to the ATP-binding cassette transporter A1 (ABCA1) transcriptionally up-regulated by ligand-activated LXRs. We now examined the effect of the synthetic LXR ligand T0901317, which can be used in vivo, on Abeta production in vitro and in APP23 transgenic mice. T0901317 applied to a variety of in vitro models, including immortalized fibroblasts from Tangier patients, and primary embryonic mouse neurons caused a concentration-dependent decrease in Abeta secretion, and this effect was increased by the addition of apolipoprotein A-I. The inhibition of Abeta production by T0901317 was cell-type specific, being more prominent in primary neurons than in non-neuronal cells. Tangier fibroblasts lacking a functional ABCA1 secreted more Abeta than control fibroblasts, thus demonstrating the role of ABCA1 in amyloid precursor protein (APP) processing and Abeta generation. T0901317 treatment of 11-week-old APP23 mice for 6 days showed a significant increase in ABCA1 expression and a decrease in the ratio of soluble APP (sAPP)beta- to sAPPalpha-cleavage products. Most importantly, the treatment caused a statistically significant reduction in the levels of soluble Abeta40 and of Abeta42 in the brain these mice. Our experiments demonstrate that T0901317 decreases amyloidogenic processing of APP in vitro and in vivo, thus supporting the search for potent and specific LXR ligands with properties allowing therapeutic application.

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Metadata

Authors
Koldamova, R. P., Lefterov, I. M., Staufenbiel, M., Wolfe, D., Huang, S., Glorioso, J. C., Walter, M., Roth, M. G., & Lazo, J. S.
Affiliations
  • University of Pittsburgh (US)
  • Novartis Institutes for BioMedical Research (CH)
  • University of Münster (DE)
  • The University of Texas Southwestern Medical Center (US)
Corresponding author
  • Koldamova, Radosveta P.
  • Lefterov, Iliya M.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2005-02
Volume
280
Issue
6
Pages
4079-4088
ISSN
0021-9258 (ISSN-L)
OpenAlex
W1996457468
Cited by
279
References
55
Citations by year
2026: 7 · 2025: 12 · 2024: 4 · 2023: 5 · 2022: 10 · 2021: 11 · 2020: 12 · 2019: 8 · 2018: 6 · 2017: 11 · 2016: 13 · 2015: 15 · 2014: 17 · 2013: 22 · 2012: 15
FWCI
8.45
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • University of Pittsburgh
  • National Institutes of Health
  • National Institute on Aging (AG 18558, AG 23304, R03AG023304)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Cholesterol and Lipid Metabolism
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
liver X receptor, T0901317, amyloid-beta, Alzheimer's disease, ABCA1, oxysterols, APP processing, APP23 transgenic mice, apolipoprotein A-I, soluble APP alpha, cell type specificity, LXR ligands
MeSH terms
Liver X Receptors, Benzenesulfonamides, Alzheimer Disease, Animals, Anticholesteremic Agents, Brain, Cloning, Molecular, Disease Models, Animal, DNA-Binding Proteins, Enzyme-Linked Immunosorbent Assay, Fibroblasts, Fluorocarbons, Humans, Hydrocarbons, Fluorinated, Ligands, Mice, Inbred C57BL, Mice, Transgenic, Neurons, Protein Binding, Sulfonamides, Time Factors, Transcription, Genetic, Transfection, Blotting, Western, Up-Regulation, Amyloid beta-Protein Precursor, Apolipoprotein A-I, DNA, Complementary, Simplexvirus, Receptors, Cytoplasmic and Nuclear, Immunoprecipitation, Mice, Orphan Nuclear Receptors

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