Cited by 324Alzheimer's disease research and treatmentsRedox biology and oxidative stressDementia and Cognitive Impairment Research

β‐Site APP cleaving enzyme up‐regulation induced by 4‐hydroxynonenal is mediated by stress‐activated protein kinases pathways

Tamagno, Elena, Parola, Maurizio, Bardini, Paola, Piccini, Alessandra, Borghi, Roberta, Guglielmotto, Michela, Santoro, Gianni, Davit, Annalisa +4 more·2005·Journal of Neurochemistry

Abstract

4‐Hydroxynonenal (HNE), an aldehydic product of lipid peroxidation, up‐regulates expression of the β‐site APP cleaving enzyme (BACE‐1), an aspartyl protease responsible for the β‐secretase cleavage of amyloid precursor protein (AβPP), and results in increased levels of amyloid β (Aβ) peptide. The mechanisms underlying this remain unclear but are of fundamental importance because prevention of BACE‐1 up‐regulation is viewed as an important therapeutic strategy. In this study, we exposed NT 2 neurons to a range of HNE concentrations (0.5–5 µ m ) that elicited an up‐regulation of BACE‐1 expression, a significant increase in intracellular and secreted levels of Aβ peptides as well as apoptosis involving poly‐ADP ribose polymerase cleavage and activation of caspase 3. To delineate the molecular events involved in HNE‐mediated BACE‐1 activation, we investigated the involvement of stress‐activated protein kinases (SAPK), signal transducers and activators of transcription (STAT) and serine–threonine kinase B/phosphatidylinositol phosphate 3 kinase (Akt/PtdIns3K). Using specific pharmacological inhibitors, our results show that activation of c‐Jun N‐terminal kinases and p38 MAPK. , but not STAT or Akt/PtdIns3K, pathways mediate the HNE‐dependent up‐regulation of BACE‐1 expression. Therefore, HNE, an oxidative stress mediator detected in vivo in the brains of Alzheimer's disease patients, may play a pathogenetic role in Alzheimer's disease by selectively activating SAPK pathways and BACE‐1 that regulate the proteolytic processing of AβPP.

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Crossref · 10.1111/j.1471-4159.2004.02895.x

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Authors
Tamagno, E., Parola, M., Bardini, P., Piccini, A., Borghi, R., Guglielmotto, M., Santoro, G., Davit, A., Danni, O., Smith, M. A., Perry, G., & Tabaton, M.
Affiliations
  • University of Turin (IT)
  • University of Genoa (IT)
  • Case Western Reserve University (US)
Corresponding author
Tamagno, Elena
Venue
Journal of Neurochemistry
Publisher
Wiley
Published
2005-01-10
Volume
92
Issue
3
Pages
628-636
ISSN
  • 0022-3042 (ISSN-L)
  • 1471-4159
OpenAlex
W1983730442
Cited by
324
References
3
Citations by year
2026: 3 · 2025: 10 · 2024: 9 · 2023: 15 · 2022: 13 · 2021: 7 · 2020: 17 · 2019: 20 · 2018: 15 · 2017: 12 · 2016: 15 · 2015: 17 · 2014: 11 · 2013: 19 · 2012: 28
FWCI
11.15
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Neurochemistry (publishedVersion)
  • PubMed (publishedVersion)
  • CINECA IRIS Institutial Research Information System (University of Genoa) (submittedVersion)
  • Institutional Research Information System University of Turin (University of Turin) (submittedVersion)
Funders
Ministero dell'Università e della Ricerca
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
Keywords
4-hydroxynonenal, BACE1, amyloid-beta, c-Jun N-terminal kinase, p38 MAPK, lipid peroxidation, oxidative stress, Alzheimer's disease, APP processing, apoptosis, caspase-3, STAT
MeSH terms
Aldehydes, Cell Line, DNA-Binding Proteins, Humans, Neurons, Endopeptidases, Proto-Oncogene Proteins, Signal Transduction, Trans-Activators, Up-Regulation, Aspartic Acid Endopeptidases, Apoptosis, Protein Serine-Threonine Kinases, Phosphatidylinositol 3-Kinases, Enzyme Activators, JNK Mitogen-Activated Protein Kinases, p38 Mitogen-Activated Protein Kinases, STAT1 Transcription Factor, Proto-Oncogene Proteins c-akt, Amyloid Precursor Protein Secretases

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