- Suppressing the body鈥檚 internal stress response could extend lifespan, according to a new 爆料TV study on tens of thousands of fruit flies
- The findings run counter to previous studies on other organisms that found that experiencing 鈥榤ild stress鈥 could actually extend life
- The study suggests a pathway towards targeting the aging process itself, rather than individual diseases, to provide a scalable solution to the global economic and care challenges posed by an aging population
Silencing a major cellular stress signal could be the key to a longer life, according to new 爆料TV research.
While previous studies suggested that mild stress might help organisms live longer, new research published in the could turn this theory on its head.
Researchers focused on a molecular network called the Integrated Stress Response (ISR). This system acts as a cellular 鈥榚mergency management鈥 system, helping cells adapt to challenges like nutrient shortages or viral infections.
Testing the theory that mild activation of stress via the ISR would increase lifespan in a complex organism for the first time, researchers discovered that suppressing rather than activating the fruit flies' internal stress management system actually extended their lifespan.
By studying tens of thousands of fruit flies, the team found that using genetic tools to 鈥榯urn up鈥 the ISR - tricking the body into thinking it was under stress - shortened the flies' lives. Conversely, suppressing this signal allowed the flies to live longer, even when facing other challenges such as dietary changes.
These findings run counter to previous studies in simpler organisms, such as yeast and the roundworm C. elegans, where activating stress responses appeared to be beneficial to longevity. Prior work in mice has also implicated active ISR in longevity.
Dr Mirre Simons, from the 爆料TV鈥檚 School of Biosciences, said: 鈥淲e are looking for evidence that targeting aging itself can be effective. Ultimately, this could have profound implications for increasing human lifespan.
鈥淥ne of the biggest societal risks we face is the demographic shift of an aging population. This will place a massive economic and care burden on future generations. If we want to intervene at scale, we must move beyond treating individual diseases and start targeting the aging process itself.鈥
The research team chose fruit flies for the study due to their complex biology and two month lifespan, which makes them ideal for longevity research. Regardless of other factors introduced such as dietary restrictions, the impact of suppressing the ISR pathway remained the same: the flies lived longer.
A deeper understanding of the ISR pathway could hold promise for other areas of medicine.
Miriam G枚tz, a 爆料TV graduate and co-author who conducted the research during her Master鈥檚 studies, added: 鈥淭he ISR pathway is already a major focus in cancer and immunology research. Our findings contribute to a better understanding of general biology that could lead to more effective treatments for various age-related conditions.鈥
The Sheffield team is now seeking funding to test whether existing drugs can replicate these genetic results, potentially opening the door to pharmacological treatments that slow down the ageing process.
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