Dual mTORC1/C2 inhibitors: gerosuppressors with potential anti-aging effect
Pedro Sousa-Victor1,2, Laura García-Prat2, Pura Muñoz-Cánoves2
1Buck Institute for Research on Aging, Novato, CA, USA.
Abstract:
Over the past decade, our understanding of the molecular and cellular mechanisms presiding over cellular and tissue decline with aging has greatly advanced. Classical hallmarks of aging cell include increasing levels of reactive oxygen species, DNA damage and senescence entry, which disrupt tissue architecture and function. Tissue dysfunction with aging has been shown to correlate with a cellular switch from a G0 reversible quiescence state into a G0 irreversible senescence state (geroconversion), causing a permanent proliferative block. The TOR (target of rapamycin) kinase has been shown to promote geroconversion. Rapamycin and other rapalogs specifically suppress activity of the mammalian TOR (mTOR) complex 1 (mTORC1) -but not mTOR complex 2 (mTORC2)- and decrease senescence entry, thus preserving proliferative potential. In this perspective, we briefly comment recent progress of Leontieva and colleagues showing a new class of non-rapalog drugs that target simultaneously mTORC1 and mTORC2 and prevent geroconversion in a more efficient way than rapamycin. Its potential future use as rejuvenating, anti-aging therapeutics is therefore proposed.
Insights
New non-rapamycin drugs targeting both mTORC1 and mTORC2 show promise in preventing cellular aging (geroconversion) more effectively than rapamycin, potentially offering future anti-aging therapies.
Area of Science:
- Gerontology
- Molecular Biology
- Cellular Aging
Background:
- Aging involves cellular and tissue decline, characterized by DNA damage, reactive oxygen species, and senescence.
- Cellular aging, or geroconversion, involves a shift from reversible quiescence to irreversible senescence, halting proliferation.
- The target of rapamycin (TOR) kinase pathway, particularly mTORC1, is implicated in promoting geroconversion.
Purpose of the Study:
- To review recent advancements in targeting the TOR pathway for anti-aging interventions.
- To highlight novel non-rapalog drugs that inhibit both mTORC1 and mTORC2.
- To evaluate the potential of these new drugs in preventing cellular geroconversion.
Main Methods:
- Discussion of recent research findings on non-rapalog drugs targeting mTORC1 and mTORC2.
- Comparison of the efficacy of these novel drugs with rapamycin in preventing geroconversion.
- Analysis of the impact on cellular senescence and proliferative potential.
Main Results:
- Non-rapalog drugs targeting both mTORC1 and mTORC2 demonstrate enhanced prevention of geroconversion compared to rapamycin.
- These novel drugs maintain cellular proliferative potential more effectively.
- The simultaneous inhibition of both mTOR complexes offers a more potent anti-aging strategy.
Conclusions:
- Novel non-rapalog drugs targeting mTORC1 and mTORC2 represent a promising therapeutic strategy against cellular aging.
- These drugs could offer a more efficient approach to preventing age-related tissue dysfunction.
- Further research into these compounds may lead to effective rejuvenating and anti-aging treatments.
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