Effects of rapamycin and TOR on aging and memory: implications for Alzheimer's disease

Renato X Santos1, Sónia C Correia, Susana Cardoso

  • 1Department of Life Sciences - Faculty of Sciences and Technology, University of Coimbra, Coimbra, Portugal.

Insights

Rapamycin, an immunosuppressant drug, may extend lifespan and improve memory by inhibiting the Target of Rapamycin (TOR) pathway. This review explores its effects on aging, neuronal plasticity, and Alzheimer's disease.

Area of Science:

  • Pharmacology
  • Molecular Biology
  • Neuroscience

Background:

  • Rapamycin is an immunosuppressant used in transplantation.
  • The Target of Rapamycin (TOR) pathway regulates crucial cellular processes like growth, metabolism, and autophagy.
  • TOR exists in two complexes: rapamycin-sensitive TORC1 and rapamycin-insensitive TORC2.

Purpose of the Study:

  • To review evidence linking rapamycin and TOR to lifespan extension.
  • To discuss the role of rapamycin and TOR in memory improvement.
  • To explore recent findings on rapamycin's effects on Alzheimer's disease neuropathology.

Main Methods:

  • Literature review of studies on rapamycin and TOR.
  • Analysis of research on aging, neuronal plasticity, and memory.
  • Examination of studies investigating rapamycin in Alzheimer's disease models.

Main Results:

  • Rapamycin inhibits TORC1, correlating with increased lifespan and decreased protein biosynthesis.
  • Rapamycin demonstrates beneficial effects on neuronal survival and plasticity, enhancing memory.
  • Emerging evidence suggests rapamycin impacts Alzheimer's disease-associated neuropathology.

Conclusions:

  • Rapamycin and the TOR pathway are implicated in aging and lifespan extension.
  • Rapamycin shows potential for cognitive enhancement and memory improvement.
  • Further research into rapamycin's therapeutic applications for neurodegenerative diseases like Alzheimer's is warranted.

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