Cited by 680Autophagy in Disease and TherapyAlzheimer's disease research and treatmentsGenetics, Aging, and Longevity in Model Organisms

Genome-wide analysis reveals mechanisms modulating autophagy in normal brain aging and in Alzheimer’s disease

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Lipinski, Marta M., Zheng, Bin, Lu, Tao, Yan, Zhenyu, Py, Bénédicte F., Ng, Aylwin, Xavier, Ramnik J., Li, Cheng +3 more·2010·Proceedings of the National Academy of Sciences

Abstract

Dysregulation of autophagy, a cellular catabolic mechanism essential for degradation of misfolded proteins, has been implicated in multiple neurodegenerative diseases. However, the mechanisms that lead to the autophagy dysfunction are still not clear. Based on the results of a genome-wide screen, we show that reactive oxygen species (ROS) serve as common mediators upstream of the activation of the type III PI3 kinase, which is critical for the initiation of autophagy. Furthermore, ROS play an essential function in the induction of the type III PI3 kinase and autophagy in response to amyloid beta peptide, the main pathogenic mediator of Alzheimer's disease (AD). However, lysosomal blockage also caused by Abeta is independent of ROS. In addition, we demonstrate that autophagy is transcriptionally down-regulated during normal aging in the human brain. Strikingly, in contrast to normal aging, we observe transcriptional up-regulation of autophagy in the brains of AD patients, suggesting that there might be a compensatory regulation of autophagy. Interestingly, we show that an AD drug and an AD drug candidate have inhibitory effects on autophagy, raising the possibility that decreasing input into the lysosomal system may help to reduce cellular stress in AD. Finally, we provide a list of candidate drug targets that can be used to safely modulate levels of autophagy without causing cell death.

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  • AI-based quantitative modeling and integrative network analysis have been applied to assess autophagy and UPS-related pathways in AD models.

    “To investigate these proteostatic disruptions, AI-based methods such as quantitative modeling and integrative network analysis have been applied to assess autophagy and UPS-related pathways in AD models52,53.”

    From Artificial intelligence-driven multi-omics approaches in Alzheimer's disease: Progress, challenges, and future directions (2025) · cites this paper as [52]

    The Results report protein–protein interaction network analysis of autophagy regulators and analysis of their expression in AD patient brain samples (page not provided). The paper also describes a quantitative autophagy assay, but these passages do not establish AI-based quantitative modeling or an assessment of UPS-related pathways. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • Expression of several autophagy proteins, particularly Beclin1, ATG5, and ATG7, declines with age and is exacerbated in Alzheimer's disease.

    “The expression of several autophagy proteins, in particular Beclin1, ATG5, and ATG7, decline with age, and is exacerbated in AD (Lipinski et al., 2010; Lucin et al., 2013; Pickford et al., 2008; Rubinsztein et al., 2011).”
  • Expression of Beclin1, ATG5, and ATG7 decreases with age.

    “The expression of these three proteins decreases with age (Lipinski et al., 2010), which may lead to an insufficiency in LANDO, establishing a putative risk factor for pathology.”

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Authors
Lipinski, M. M., Zheng, B., Lu, T., Yan, Z., Py, B. F., Ng, A., Xavier, R. J., Li, C., Yankner, B. A., Scherzer, C. R., & Yuan, J.
Affiliations
  • Harvard University (US)
  • Brigham and Women's Hospital (US)
Venue
Proceedings of the National Academy of Sciences
Published
2010-07-26
Volume
107
Issue
32
Pages
14164-14169
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2006840724
Cited by
680
References
28
Citations by year
2026: 30 · 2025: 49 · 2024: 43 · 2023: 48 · 2022: 52 · 2021: 65 · 2020: 43 · 2019: 55 · 2018: 56 · 2017: 39 · 2016: 53 · 2015: 37 · 2014: 30 · 2013: 31 · 2012: 25
FWCI
18.44
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Digital Access to Scholarship at Harvard (DASH) (Harvard University) (submittedVersion, cc-by)
  • HAL (submittedVersion)
Funders
  • National Institute on Aging (R37AG012859, P01AG027916)
  • National Institute of Allergy and Infectious Diseases (AI 062773, R01AI062773)
  • National Institute of Diabetes and Digestive and Kidney Diseases ((DK043351, P30DK043351, P30DK040561)
  • National Institute of Neurological Disorders and Stroke (R01NS064155, P01NS058793, R21NS060227)
Topics
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
Keywords
autophagy, Alzheimer's disease, brain aging, reactive oxygen species, amyloid-beta, therapeutic target, neurodegeneration
MeSH terms
Aging, Alzheimer Disease, Autophagy, Brain, Gene Expression Regulation, Humans, Lysosomes, Amyloid beta-Peptides, Reactive Oxygen Species, Phosphatidylinositol 3-Kinases, Genome-Wide Association Study

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