The Greenland shark, recognized as one of the longest-living animals on the planet with an estimated lifespan of over 500 years, has drawn scientific attention for the genetic mechanisms that allow it to achieve this exceptional longevity.
A recent study conducted by the University of Tokyo has sequenced the DNA of this species, identifying key genetic adaptations.
Genetic findings of the oldest animal
The study highlighted the importance of the NF-κB pathway, a key molecular mechanism for the regulation of cell proliferation, DNA repair, and immune response. This pathway is directly related to reducing inflammation, a determining factor in aging and the development of diseases such as cancer.
In addition, genes that inhibit the spread of cancer cells and strengthen the immune system were detected. Thanks to these genetic adaptations, these sharks can reach ages that exceed five centuries, with a reproductive maturity not reached until 150 years.
Scientific implications
Understanding the biological mechanisms of the Greenland shark provides valuable information for research in human health, opening possibilities to develop strategies against age-related diseases.
Furthermore, this discovery highlights the need to conserve this species, which faces vulnerabilities due to its slow reproduction and environmental changes.
This study not only delves into the science of longevity but also promotes the development of conservation practices to protect these fascinating sharks.
Characteristics of the Greenland shark
The Greenland shark is one of the largest sharks in the world, comparable in size to great white sharks. They are known to reach lengths of 6.4 meters and weigh up to 1,000 kg, although the typical Greenland shark weighs around 400 kg and measures between 2.44 and 4.8 meters long.
All sharks are cold-blooded, but this particular species thrives in a frigid environment. Greenland sharks prefer to stay in waters ranging from -1 to 10 °C (30.2 to 50 °F) and migrate to the coldest part of the water each season.
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