There has long been a scientific theory that evolution favors health and strength in early life over longevity. The therapy is known as “antagonistic pleiotropy,” and a group of scientists has recently found genetic proof of this “trade-off.”
The international team of researchers have identified a gene that directly links early-life growth and reproductive success with accelerated aging and increased cancer risk later in life, offering new insight into the longstanding theory in evolutionary biology that postulates certain genes can provide advantages early in life while contributing to disease and decline in old age.
While widely accepted in theory, scientists have struggled to identify specific genes responsible for such trade-offs in vertebrates. Led by Dr. Eitan Moses, Dr. Marva Bergman, and Prof. Itamar Harel at Hebrew University, in collaboration with Prof. Nabieh Ayoub (Technion) and Prof. Alexei A. Maklakov (University of East Anglia), the team has provided some of the most powerful experimental evidence for the theory of antagonistic pleiotropy to date.
Using the African turquoise killifish, a short-lived species recently pioneered by Harel and colleagues for genetic aging research, the team focused on the gene vgll3, which has been previously linked to the timing of human puberty and maturation in other species, particularly Atlantic salmon.
Key Takeaways From This Study:
The study identified vgll3 as a key gene that promotes rapid growth and early reproduction while increasing the risk of aging and cancer later in life. “What’s fascinating-and slightly terrifying-is that the cancer we see in these fish isn’t a random accident. It’s the direct shadow of their youthful vitality,” said Dr. Harel.
- The findings provide rare experimental evidence for the theory of antagonistic pleiotropy.
- Researchers say the discovery could open new paths for potentially separating the biological links between development, aging, and disease.
- The discovery could contribute to future efforts in cancer prevention and research aimed at extending healthy lifespan.
You can read the complete study which was published in Nature Communications by clicking on the link.