Greenland Shark Genome Sequence Reveals Secrets of Extreme Longevity

Scientists have sequenced nearly the entire genome of the Greenland shark to uncover the genetic basis for its extraordinary longevity ^[1].

This discovery is significant because it provides a genetic blueprint for an animal that resists cancer and ages far slower than most vertebrates. Understanding these mechanisms could lead to new treatments for human age-related diseases [1, 2].

The research focuses on the Greenland shark, a species native to Arctic waters ^[4]. By mapping the genome, researchers identified specific genetic features that contribute to the animal's ability to survive for centuries. These findings suggest that the shark possesses unique cellular repair mechanisms that prevent the onset of cancer and other degenerative conditions [1, 3].

Estimates of the species' maximum lifespan vary among scientific sources. Some data suggests the sharks can live up to 400 years [1, 2], while other reports estimate a maximum lifespan of up to 500 years ^[4].

The sequencing process allows researchers to pinpoint the exact genes responsible for this durability. The study highlights how the shark's biology manages oxidative stress, a primary driver of aging in humans, more efficiently than other known species [1, 3].

While the research was conducted by various scientific teams, the specific institutions were not named in the initial reports ^[4]. The findings were published earlier this month, marking the first time the whole genome of this specific shark has been sequenced ^[3].