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Updated: Jun 20, 2026
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A Suppressor Screen for the Characterization of Genetic Links Regulating Chronological Lifespan in Saccharomyces cerevisiae
Published on: September 17, 2020
[The biology of aging]
Bulletin De L'Academie Nationale De Medecine
|September 2, 2009
Summary
Aging is a natural process influenced by factors like hygiene and disease reduction. Key molecular processes like insulin/IGF-1 signaling, oxidative stress, telomere shortening, and autophagy impact longevity and cellular health.
Area of Science:
- Gerontology
- Molecular Biology
- Cellular Biology
Context:
- Aging is a complex biological process characterized by a decline in physiological function.
- Life expectancy has increased due to improved hygiene and reduced morbidity, but aging remains a fundamental aspect of life.
- Experimental models in various species have provided insights into the molecular mechanisms underlying aging.
Purpose:
- To review the principal molecular and cellular processes that influence aging.
- To discuss the role of genetic factors and biomarkers in aging.
- To explore age-related changes in different organs and systems.
Summary:
- Key molecular pathways influencing aging include the insulin/IGF-1 axis, oxidative stress from reactive oxygen species, telomere dynamics, and lysosomal autophagy.
- Genetic factors, such as lamin mutations causing progeria, highlight the molecular basis of accelerated aging.
- No single biomarker exists, but combinations like Nt-proBNP, troponin I, C-reactive protein, and cystatin may indicate aging-related disease risks.
- Organ-specific aging involves vascular stiffening, cardiac fibrosis, neurodegeneration, macular degeneration, renal decline, and immune senescence.
- Cancer incidence rises with age due to accumulated mutations and weakened immune surveillance.
Impact:
- Understanding these processes can inform interventions to promote healthy aging and extend lifespan.
- Identifying biomarkers could aid in early detection and management of age-related diseases.
- This knowledge is crucial for adapting medical treatments and lifestyle recommendations, such as exercise and diet, to mitigate aging effects.
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