Journal
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
Volume 366, Issue 1561, Pages 99-107Publisher
ROYAL SOC
DOI: 10.1098/rstb.2010.0243
Keywords
insulin signalling; ageing; nutrient sensing; target of rapamycin
Categories
Funding
- Wellcome Trust
- Medical Research Council
- Research into Ageing
- Biological and Biotechnology Research Council
- BBSRC [BB/H012850/1] Funding Source: UKRI
- Biotechnology and Biological Sciences Research Council [BB/H012850/1] Funding Source: researchfish
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Over the last two centuries, there has been a significant increase in average lifespan expectancy in the developed world. One unambiguous clinical implication of getting older is the risk of experiencing age-related diseases including various cancers, dementia, type-2 diabetes, cataracts and osteoporosis. Historically, the ageing process and its consequences were thought to be intractable. However, over the last two decades or so, a wealth of empirical data has been generated which demonstrates that longevity in model organisms can be extended through the manipulation of individual genes. In particular, many pathological conditions associated with the ageing process in model organisms, and importantly conserved from nematodes to humans, are attenuated in long-lived genetic mutants. For example, several long-lived genetic mouse models show attenuation in age-related cognitive decline, adiposity, cancer and glucose intolerance. Therefore, these long-lived mice enjoy a longer period without suffering the various sequelae of ageing. The greatest challenge in the biology of ageing is to now identify the mechanisms underlying increased healthy lifespan in these model organisms. Given that the elderly are making up an increasingly greater proportion of society, this focused approach in model organisms should help identify tractable interventions that can ultimately be translated to humans.
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