Cited by 749Alzheimer's disease research and treatmentsAutophagy in Disease and TherapyNeuroinflammation and Neurodegeneration Mechanisms

Autophagy, amyloidogenesis and Alzheimer disease

Nixon, Ralph A.·2007·Journal of Cell Science

Abstract

Autophagy is the sole pathway for organelle turnover in cells and is a vital pathway for degrading normal and aggregated proteins, particularly under stress or injury conditions. Recent evidence has shown that the amyloid beta peptide is generated from amyloid beta precursor protein (APP) during autophagic turnover of APP-rich organelles supplied by both autophagy and endocytosis. Abeta generated during normal autophagy is subsequently degraded by lysosomes. Within neurons, autophagosomes and endosomes actively form in synapses and along neuritic processes but efficient clearance of these compartments requires their retrograde transport towards the neuronal cell body, where lysosomes are most concentrated. In Alzheimer disease, the maturation of autophagolysosomes and their retrograde transport are impeded, which leads to a massive accumulation of ;autophagy intermediates' (autophagic vacuoles) within large swellings along dystrophic and degenerating neurites. The combination of increased autophagy induction and defective clearance of Abeta-generating autophagic vacuoles creates conditions favorable for Abeta accumulation in Alzheimer disease.

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Crossref · 10.1242/jcs.019265

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Authors
Nixon, R. A.
Affiliations
Nathan Kline Institute for Psychiatric Research (US)
Corresponding author
Nixon, Ralph A.
Venue
Journal of Cell Science
Published
2007-12-01
Volume
120
Issue
23
Pages
4081-4091
ISSN
  • 0021-9533 (ISSN-L)
  • 1477-9137
OpenAlex
W2097631517
Cited by
749
References
18
Citations by year
2026: 13 · 2025: 29 · 2024: 39 · 2023: 39 · 2022: 36 · 2021: 46 · 2020: 45 · 2019: 60 · 2018: 45 · 2017: 34 · 2016: 48 · 2015: 46 · 2014: 39 · 2013: 40 · 2012: 54
FWCI
3.13
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Cell Science (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
autophagy, amyloid-beta, amyloid precursor protein, Alzheimer's disease, autophagolysosomes, retrograde transport, autophagosomes, lysosomal degradation, endocytosis, neurite degeneration, protein aggregation
MeSH terms
Alzheimer Disease, Animals, Autophagy, Disease Models, Animal, Endocytosis, Humans, Lysosomes, Models, Biological, Neurons, Amyloid beta-Peptides, Amyloid beta-Protein Precursor

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