Today, we are in a fascinating time where science is unlocking the secrets to healthy aging. Researchers at Bar-Ilan University (BIU) in Ramat Gan have developed something called PHARAOH, short for Positive Posttranslational Modifications Regulator of Healthspan. This innovation focuses on not just living longer but also enjoying better health as we age.
The name PHARAOH comes from a unique experiment where scientists created a transgenic mouse called "Moses" that lives 30% longer than regular mice. Surprisingly, this mouse is not underweight; it’s fairly plump! It has higher levels of the SIRT6 protein, which seems to help it age slowly while acting like a younger mouse.
As we know, life expectancy has increased over the decades. However, longer lives come with a rise in age-related diseases like cancer and diabetes. Understanding how to enhance our healthspan—the period we enjoy good health—is crucial. Research shows that different mammals live vastly different lengths of time, from just a few years to over a hundred. This prompts the question: What allows certain animals to thrive into old age?
To find answers, scientists are examining the evolutionary changes that contribute to longevity. A recent study in Nature Communications published by the BIU team dives deep into this topic. Led by Prof. Haim Cohen, the research uniquely compares protein sequences across 107 mammal species, analyzing the posttranslational modifications (PTMs) that correspond with long lifespans.
Cohen emphasizes that these PTMs regulate vital cellular functions, impacting resilience against age-related diseases. The findings reveal that specific protein alterations are common among long-lived mammals, suggesting they play essential roles in aging and health.
Interestingly, large mammals like whales appear to have lower cancer rates despite possessing many more cells than smaller animals. This study highlights the protective roles of PTMs found in such creatures, shedding light on how nature’s strategies can inform human health.
Cohen’s research also looked at how SIRT6 protein levels increase with calorie restriction. This hints that manipulating such proteins might extend human longevity. The implications for diseases like Alzheimer’s and diabetes could be profound.
Future plans include studying a wider array of animals, potentially tackling the secrets of even longer-lived species. Cohen reflects, “Our research opens new doors to understanding how protein modifications can fend off age-related diseases and promote longer, healthier lives. By targeting specific PTMs, we can develop therapies that mimic these natural processes.”
As we continue to explore these fascinating connections between evolution and health, the potential increase in healthy lifespan seems promising.
For more detailed insights, you can read the study published in Nature Communications here.
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