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Animal and human models to understand ageing
Hayley Lees1, Hannah Walters1, Lynne S Cox1
1Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK.
Maturitas
|July 4, 2016
Summary
This review explores model organisms for studying human aging, highlighting conserved molecular pathways like insulin signaling and mTOR. It evaluates cellular senescence and systemic changes, discussing therapeutic potential for aging research.
Area of Science:
- Gerontology and Molecular Biology
- Comparative Biology and Aging Research
Background:
- Human aging is a complex process involving gradual organ and tissue decline over time.
- Studying aging mechanisms requires model systems that share biological similarities with humans.
Purpose of the Study:
- To review and assess the utility of diverse model systems for studying human aging.
- To highlight the benefits and drawbacks of each model in elucidating aging mechanisms.
- To discuss conserved molecular pathways and cellular processes implicated in aging.
Main Methods:
- Comparative analysis of model organisms including yeasts, worms, flies, mice, and primates.
- Review of evolutionary conserved molecular pathways (e.g., insulin-like growth factor signaling, mTOR).
- Evaluation of cellular senescence and systemic aging changes across models.
Main Results:
- Significant evolutionary conservation of molecular pathways governing cell responses and aging.
- Identification of insulin-like growth factor signaling and mTOR as central to aging.
- Cellular senescence is a potential contributor to age-related frailties and diseases.
- Systemic aging changes necessitate models like mammals and primates.
Conclusions:
- Model organisms provide valuable insights into human aging, with varying strengths and limitations.
- Understanding conserved pathways and cellular senescence is key to aging research.
- Further research into systemic aging and novel therapeutics holds promise for addressing age-related decline.
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