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Finding Ponce de Leon's Pill: Challenges in Screening for Anti-Aging Molecules
Surinder Kumar1, David B Lombard2
1Department of Pathology, University of Michigan, Ann Arbor, MI, 48109, USA.
Abstract:
Aging is characterized by the progressive accumulation of degenerative changes, culminating in impaired function and increased probability of death. It is the major risk factor for many human pathologies - including cancer, type 2 diabetes, and cardiovascular and neurodegenerative diseases - and consequently exerts an enormous social and economic toll. The major goal of aging research is to develop interventions that can delay the onset of multiple age-related diseases and prolong healthy lifespan (healthspan). The observation that enhanced longevity and health can be achieved in model organisms by dietary restriction or simple genetic manipulations has prompted the hunt for chemical compounds that can increase lifespan. Most of the pathways that modulate the rate of aging in mammals have homologs in yeast, flies, and worms, suggesting that initial screening to identify such pharmacological interventions may be possible using invertebrate models. In recent years, several compounds have been identified that can extend lifespan in invertebrates, and even in rodents. Here, we summarize the strategies employed, and the progress made, in identifying compounds capable of extending lifespan in organisms ranging from invertebrates to mice and discuss the formidable challenges in translating this work to human therapies.
Insights
Scientists are searching for compounds to extend healthy lifespan and delay age-related diseases. Promising results in model organisms offer hope for human therapies, despite translation challenges.
Area of Science:
- Gerontology and pharmacology
- Molecular biology and genetics
Background:
- Aging is a primary risk factor for major human diseases, imposing significant social and economic burdens.
- Interventions to delay aging and extend healthspan are a major focus of scientific research.
- Dietary and genetic interventions in model organisms have successfully enhanced longevity and health.
Purpose of the Study:
- To identify chemical compounds that can increase lifespan and healthspan.
- To explore the potential of using invertebrate models for screening anti-aging compounds.
- To summarize progress and challenges in translating findings from model organisms to human therapies.
Main Methods:
- Reviewing strategies for identifying lifespan-extending compounds.
- Examining progress in model organisms from invertebrates to rodents.
- Discussing the translation of findings to human applications.
Main Results:
- Several compounds have been identified that extend lifespan in invertebrates.
- Some compounds have also shown lifespan-extending effects in rodent models.
- Homologies in aging pathways across species support the use of model organisms for screening.
Conclusions:
- Pharmacological interventions show promise for extending lifespan and healthspan.
- Model organisms are valuable tools for identifying potential anti-aging compounds.
- Significant challenges remain in translating these findings into effective human therapies.
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