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Aging as a mitochondria-mediated atavistic program: can aging be switched off?
Vladimir P Skulachev1, Valter D Longo
1Belozersky Institute of Physico-Chemical Biology, Moscow State University, Moscow 119992, Russia. skulach@belozersky.msu.ru
Annals of the New York Academy of Sciences
|January 10, 2006
Summary
Programmed cell death occurs across many life forms, from yeast to mammals. Targeting mitochondrial reactive oxygen species (ROS) may offer a novel strategy to slow aging by preventing cellular damage.
Area of Science:
- Gerontology
- Cell Biology
- Biochemistry
Background:
- Programmed death is observed at multiple biological levels, including subcellular (mitoptosis), cellular (apoptosis), and organismal (phenoptosis).
- Aging in higher animals correlates with increased damage from mitochondrial reactive oxygen species (ROS).
Purpose of the Study:
- To investigate the role of programmed cell death mechanisms in aging.
- To explore the potential of mitigating aging by targeting mitochondrial ROS.
Main Methods:
- Comparative analysis of programmed cell death pathways in yeast and animals.
- Examination of the involvement of mitochondrial ROS in cellular suicide programs.
Main Results:
- Programmed cell death mechanisms share commonalities between yeast and mammals.
- Mitochondrial ROS generation is a key component of cellular suicide programs.
Conclusions:
- The aging process in higher animals involves damage mediated by mitochondrial ROS.
- Scavenging mitochondrial ROS presents a potential therapeutic avenue for slowing or inhibiting aging.