Cited by 64Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

nELAV Proteins Alteration in Alzheimer's Disease Brain: A Novel Putative Target for Amyloid-β Reverberating on AβPP Processing

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Amadio, Marialaura, Pascale, Alessia, Wang, Jun, Ho, Lap, Quattrone, Alessandro, Gandy, Sam, Haroutunian, Vahram, Racchi, Marco +1 more·2009·Journal of Alzheimer's Disease

Abstract

Neuronal ELAV (nELAV) proteins are RNA-binding proteins which play a physiological role in controlling gene expression in memory formation, and their alteration may contribute to cognitive impairment associated with neurodegenerative pathologies such as Alzheimer's disease (AD). Indeed, we found that the content of nELAV proteins is significantly decreased along with clinical dementia progression in the hippocampi of AD brains, where it inversely correlates with the amount of amyloid-beta (Abeta). To check the direct influence of Abeta on nELAV, we performed in vitro experiments using human SH-SY5Y cells, finding that Abeta(1-42) specifically determines nELAV proteins reduction. Since ADAM10 mRNA has the predicted sequences targeted by nELAV, we investigated whether Abeta, through nELAV proteins, could originate a vicious circle affecting amyloid-beta protein precursor (AbetaPP) processing. Immunoprecipitation experiments showed that indeed nELAV proteins bind to ADAM10 mRNA and that this binding is disrupted by Abeta(1-42) exposure, resulting in a decreased ADAM10 protein expression. ADAM10 protein diminution was also found in AD hippocampi. These data show for the first time the involvement of nELAV in AD pathology and suggest that their alteration may affect genes implicated in AbetaPP processing.

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Crossref · 10.3233/jad-2009-0967

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  • In the hippocampus of AD patients, nELAV protein abundance decreases in parallel with clinical dementia progression, and their expression is inversely correlated with Aβ peptide levels both in vitro and in vivo.

    “In the hippocampus of AD patients, nELAV protein abundance was found to decrease in parallel with clinical dementia progression, and their expression was inversely correlated with Aβ peptide levels both in vitro and in vivo (Amadio et al. 2009).”

    From Emerging complexity of the HuD/ELAVl4 gene; implications for neuronal development, function, and dysfunction (2013) · cites this paper as Amadio et al. 2009

    The Results section, “The nELAV are decreased in postmortem AD patients” (page unavailable), reports that hippocampal nELAV levels fell with dementia progression and were inversely correlated with hippocampal Aβ content. The Results section, “Aβ intracellular accumulation induces a reduction of nELAV in SH-SY5Y cells” (page unavailable), reports that Aβ exposure reduced nELAV in vitro, but does not establish an inverse correlation between their measured levels in vitro. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • The interaction between nELAV proteins and ADAM10 mRNA is disrupted following exposure to Aβ1-42 leading to reduced ADAM10 protein levels.

    “The authors also determined that the interaction between nELAV proteins and ADAM10 mRNA was disrupted following exposure to Aβ1–42 leading to reduced ADAM10 protein levels (Amadio et al. 2009).”

    From Emerging complexity of the HuD/ELAVl4 gene; implications for neuronal development, function, and dysfunction (2013) · cites this paper as Amadio et al. 2009

    The Results report that Aβ1–42 exposure disrupted detectable nELAV–ADAM10 mRNA binding and reduced ADAM10 protein levels. The Discussion says the reduced protein expression may result from disrupted binding, but notes that post-translational effects cannot be excluded. Thus, the causal link implied by “leading to” is stronger than the paper establishes (page numbers not supplied). (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • nELAVs have recently been linked to Alzheimer's disease.

    “In accordance with its direct or indirect function in learning and memory, nELAVs have recently been linked to Alzheimer’s disease (AD), a condition characterized by neuronal death, memory loss and eventual dementia.”

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Authors
Amadio, M., Pascale, A., Wang, J., Ho, L., Quattrone, A., Gandy, S., Haroutunian, V., Racchi, M., & Pasinetti, G. M.
Affiliations
  • University of Pavia (IT)
  • James J. Peters VA Medical Center (US)
  • University of Trento (IT)
Corresponding author
Amadio, Marialaura
Venue
Journal of Alzheimer's Disease
Published
2009-02-16
Volume
16
Issue
2
Pages
409-419
ISSN
  • 1387-2877 (ISSN-L)
  • 1875-8908
OpenAlex
W1567068661
Cited by
63
References
35
Citations by year
2026: 2 · 2025: 3 · 2024: 2 · 2023: 2 · 2022: 2 · 2021: 5 · 2020: 5 · 2019: 3 · 2018: 4 · 2017: 3 · 2016: 6 · 2015: 3 · 2014: 5 · 2013: 6 · 2012: 6
FWCI
2.66
Type
journal article
Language
en
Open access
Locations
  • Journal of Alzheimer s Disease (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Regione Lombardia
  • National Institute on Aging (P01AG010491)
  • European Social Fund
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
RNA-binding proteins
MeSH terms
ELAV-Like Protein 1, ADAM10 Protein, Aged, Aged, 80 and over, Alzheimer Disease, Analysis of Variance, Antigens, Surface, Brain, Cell Cycle, Enzyme-Linked Immunosorbent Assay, Female, Gene Expression Regulation, Humans, Male, Membrane Proteins, Neuroblastoma, Peptide Fragments, Postmortem Changes, RNA, Messenger, Tetrazolium Salts, Thiazoles, Case-Control Studies, Amyloid beta-Peptides, Amyloid beta-Protein Precursor, RNA-Binding Proteins, Disease Progression, Cell Line, Tumor, ADAM Proteins, ELAV Proteins, Amyloid Precursor Protein Secretases

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