mTOR as a central regulator of lifespan and aging

Area of Science:

• Cellular Biology
• Aging Research
• Metabolism

Background:

• The mechanistic target of rapamycin (mTOR) pathway is crucial for integrating nutrient availability with cellular growth and proliferation.
• While mTOR's role in aging is recognized, the precise molecular mechanisms are not fully understood.

Purpose of the Study:

• To review emerging insights linking the mTOR pathway to key aging processes.
• To consolidate current knowledge on how mTOR influences nutrient sensing, proteostasis, autophagy, mitochondrial function, senescence, and stem cell decline.

Main Methods:

• Literature review of recent studies on mTOR and aging.
• Synthesis of data from various research areas including metabolism, cellular senescence, and stem cell biology.

Main Results:

• mTOR signaling is implicated in nutrient sensing, a fundamental aspect of aging.
• The pathway affects the maintenance of proteostasis and the process of autophagy, both critical for cellular health during aging.
• Dysregulation of mTOR contributes to mitochondrial dysfunction, cellular senescence, and the decline of stem cell function with age.

Conclusions:

• The mTOR pathway is a central regulator connecting cellular metabolism to aging.
• Understanding mTOR's multifaceted roles is key to deciphering aging mechanisms.
• Further research into mTOR signaling may reveal therapeutic targets for age-related decline.