University of Rochester Scientists Transfer Longevity Gene from Naked Mole Rats to Mice

Gene Transfer and Lifespan Extension

Scientists at the University of Rochester have successfully transferred a longevity-related gene from naked mole rats into mice. The naked mole rat is an animal known for its extraordinary disease resistance and longevity. Following the transfer of the specific gene, the modified mice lived longer and were healthier than their counterparts.

According to researchers, the transferred gene functions by boosting the production of high molecular weight hyaluronic acid. This substance is believed to provide several biological advantages, including protection against cancer and a reduction in inflammation.

Healthspan and Biological Effects

The experiment resulted in several measurable health improvements in the modified mice. Specifically, the researchers observed that the mice exhibited stronger resistance to tumors and maintained healthier guts. Additionally, the mice showed lower levels of inflammation associated with aging.

This development marks a shift in scientific focus toward the concept of "healthspan". Rather than focusing solely on the extension of a lifespan, the research emphasizes enhancing the quality of life added to those years.

Context of Genetic Heritability

While the University of Rochester study focused on inter-species gene transfer, other recent research has examined the role of genetics in human longevity. A study into heritability suggests that up to 50% of the variation in human lifespan could be attributed to genetics.

This figure contrasts with previous scientific estimates. Many researchers had previously coalesced around the estimate that approximately 20% to 25% of human lifespan was heritable.