Scientists Give Mice Longevity Gene From Naked Mole Rats

Scientists just borrowed a longevity secret from one of nature's most remarkable animals and proved it works in another species entirely.

Researchers at the University of Rochester transferred a gene from naked mole rats into mice, and the results were striking. The modified mice lived healthier lives, developed fewer tumors, and lived about 4.4% longer than ordinary mice.

Naked mole rats are small, wrinkled rodents that live up to 41 years. That's nearly ten times longer than similarly sized animals. They rarely get cancer, avoid most age-related diseases, and seem unusually protected from the decline that comes with aging.

For years, scientists Vera Gorbunova and Andrei Seluanov studied what makes these creatures so resilient. They discovered naked mole rats carry about ten times more of a protective substance called high molecular weight hyaluronic acid, or HMW-HA, than mice and humans do.

When the team removed HMW-HA from naked mole rat cells in earlier experiments, those cells became more likely to form tumors. That discovery raised an exciting question: could this protective mechanism work in other animals?

The researchers engineered mice to carry the naked mole rat version of a gene that produces HMW-HA. All mammals have this gene, but the naked mole rat version appears especially powerful at driving production of the protective molecule.

The results went beyond cancer resistance. The modified mice showed less inflammation throughout their bodies as they aged, maintained healthier guts, and stayed stronger overall. Because chronic inflammation drives many age-related diseases, this reduction was particularly meaningful.

The 4.4% lifespan increase may sound modest, but the real breakthrough is bigger. A longevity mechanism from one mammal successfully transferred to another for the first time. Nature's long-lived species may contain biological tools that can be adapted to help others.

Why This Inspires

It took ten years to go from discovering HMW-HA in naked mole rats to proving it improves health in mice. Now the team is focused on humans. They've already identified molecules that slow the breakdown of HMW-HA in the body and are testing them in pre-clinical trials.

The researchers see two main paths forward: slowing down how quickly the body breaks down HMW-HA, or increasing how much it produces. Both approaches could potentially improve human health and longevity.

This study opens a door that's been closed for all of human history. For the first time, we've shown that evolution's solutions in one species can be exported to benefit another.

The naked mole rat spent millions of years developing extraordinary defenses against aging and disease. Now those defenses might become ours too.