Cited by 136Autophagy in Disease and TherapyGenetics, Aging, and Longevity in Model OrganismsAntioxidants, Aging, Portulaca oleracea

mTOR and autophagy in normal brain aging and caloric restriction ameliorating age-related cognition deficits

Yang, Fengying, Chu, Xiaolei, Yin, Miaomiao, Liu, Xiaolei, Yuan, Hairui, Niu, Yanmei, Fu, Li·2014·Behavioural Brain Research

Abstract

Defect of autophagy is common to many neurodegenerative disorders because it serves as a major degradation pathway for the clearance of various aggregate-prone proteins. Mammalian target of rapamycin (mTOR) signaling, which is recognized as the most important negative regulator of autophagy, is also involved in neurodegenerative diseases. However, the role of mTOR and its dependent autophagy in normal brain during aging remains unknown. Furthermore, caloric restriction (CR) is frequently used as a tool to study mechanisms behind aging and age-associated diseases because CR can prevent age-related diseases and prolong lifespan in several model organisms. Inhibiting mTOR and promoting autophagy activity play roles in aging delayed by CR. However, whether CR can ameliorate age-related cognition deficits by inhibiting mTOR and activate autophagy in hippocampus needs to be further investigated. Here we showed a decline of autophagic degradation in mice hippocampus in correlation with age-dependent cognitive dysfunction, whereas the activity of mTOR and its upstream brain-derived neurotrophic factor (BDNF)/phosphatidylinositide 3-kinase (PI3K)/protein kinase B (Akt) signaling was decreased with aging. In addition, facilitating the mTOR pathway successfully declines and sustains autophagic degradation with aging in hippocampus by CR treatment and is involved in CR by ameliorating age-related cognitive deficits.

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Crossref · 10.1016/j.bbr.2014.02.005

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Authors
Yang, F., Chu, X., Yin, M., Liu, X., Yuan, H., Niu, Y., & Fu, L.
Affiliations
  • Tianjin Medical University (CN)
  • Tianjin Hospital (CN)
  • Tianjin Huanhu Hospital (CN)
Corresponding author
Fu, Li
Venue
Behavioural Brain Research
Publisher
Elsevier BV
Published
2014-05
Volume
264
Pages
82-90
ISSN
0166-4328 (ISSN-L)
OpenAlex
W2089664508
Cited by
136
References
46
Citations by year
2026: 8 · 2025: 3 · 2024: 5 · 2023: 8 · 2022: 13 · 2021: 14 · 2020: 14 · 2019: 11 · 2018: 16 · 2017: 14 · 2016: 15 · 2015: 11 · 2014: 4
FWCI
11.08
Type
journal article
Language
en
Open access
closed
Locations
  • Behavioural Brain Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Chinese Education Committee (2012202110015)
  • National Natural Science Foundation of China (31100856)
  • Science Foundation of Tianjin Medical University (2010ky19)
Topics
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Antioxidants, Aging, Portulaca oleracea
Keywords
mTOR signaling, autophagy, brain aging, caloric restriction, age-related cognitive decline, hippocampus, neurodegeneration, autophagic degradation
MeSH terms
Age Factors, Aging, Animals, Autophagy, Brain, Cognition Disorders, Disease Models, Animal, Food Deprivation, Gene Expression Regulation, Male, Mice, Inbred C57BL, Time Factors, Signal Transduction, Maze Learning, Brain-Derived Neurotrophic Factor, Sirolimus, Caloric Restriction, Proto-Oncogene Proteins c-akt, Mice, Phosphatidylinositol 3-Kinase

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