Cited by 99Alzheimer's disease research and treatmentsAutophagy in Disease and TherapyNeuroinflammation and Neurodegeneration Mechanisms

Rapamycin and Alzheimer disease: a double-edged sword?

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Carosi, Julian M, Sargeant, Timothy J·2019·Autophagy

Abstract

Numerous studies have reported that inhibition of MTOR (mechanistic target of rapamycin kinase) clearly reduces Alzheimer disease neuropathological hallmarks in mouse models. This has resulted in calls for the use of the MTOR inhibitor rapamycin for the treatment of dementia in humans. Unfortunately, intervention with rapamycin in these mouse studies commenced before or early in the appearance of these pathological hallmarks. Later in Alzheimer disease, when dementia actually manifests, the brain’s lysosomal system is severely damaged and treatment with rapamycin is likely to exacerbate this damage. We reassess literature described by a recent perspective article calling for the use of MTOR inhibition in dementia and conclude that rapamycin could be useful, but only in people who are in the earliest stages of Alzheimer disease. We contend that our interpretation of preclinical data concerning use of rapamycin in Alzheimer disease models is necessary if we are to avoid another failed Alzheimer disease drug trial.Abbreviations AD: Alzheimer disease; APP: amyloid beta precursor protein; MAPT: microtubule associated protein tau; MTOR: mechanistic target of rapamycin kinase; MTORC1: mechanistic target of rapamycin kinase complex 1.

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  • Rapamycin may be beneficial in the early stages of Alzheimer's disease, but it aggravates Alzheimer's disease pathology as the lysosomal degradative capacity of the brain deteriorates.

    “Rapamycin may be beneficial in the early stages of AD, but it aggravates AD pathology as the lysosomal degradative capacity of the brain deteriorates.416,417”

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Authors
Carosi, J. M., & Sargeant, T. J.
Affiliations
University of South Australia (AU)
Corresponding author
Sargeant, Timothy J
Venue
Autophagy
Published
2019-05-22
Volume
15
Issue
8
Pages
1460-1462
ISSN
  • 1554-8627 (ISSN-L)
  • 1554-8635
OpenAlex
W2944447415
Cited by
99
References
15
Citations by year
2026: 10 · 2025: 13 · 2024: 13 · 2023: 15 · 2022: 15 · 2021: 15 · 2020: 13 · 2019: 4
Type
journal article
Language
en
Open access
Locations
  • Autophagy (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Adelaide Research & Scholarship (AR&S) (University of Adelaide) (submittedVersion)
Funders
  • the Hopwood Centre for Neurobiology
  • the Australian Government
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
rapamycin, Alzheimer's disease, mTOR inhibition, lysosomal dysfunction, amyloid precursor protein, tau protein, mTORC1, treatment timing, dementia
MeSH terms
Alzheimer Disease, Animals, Autophagy, Humans, Amyloid beta-Peptides, Sirolimus, Mice, TOR Serine-Threonine Kinases

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