Naked mole rats
About
The naked mole rat (Heterocephalus glaber) is a small, nearly hairless rodent native to eastern Africa, particularly Ethiopia, Kenya, Somalia, and Djibouti.
Key findings
- Naked mole rats live nearly 30 to 40 years, unusually long for their size, making them the longest-lived rodent species known.
- Researchers discovered four specific amino acid changes in the enzyme cGAS that in naked mole rats enhance DNA repair, which likely contributes to their longevity.
- This unique cGAS enzyme functionality in naked mole rats prevents the breakdown of DNA repair mechanisms, aiding genome stability and reducing aging and cancer risks.
- Studies showed removing cGAS in naked mole rat cells caused DNA damage to accumulate, confirming its key role in DNA repair.
- Experiments with genetically engineered fruit flies expressing naked mole rat cGAS mutations lived longer than those with normal human cGAS.
- Findings provide insights for potential human therapies to boost DNA repair and combat age-related diseases by mimicking naked mole rat biology.
- A first genetically engineered lung cancer model in naked mole rats revealed their cancer resistance and complexity of tumor development, reflecting human cancer dynamics.
- Understanding naked mole rat DNA repair and cancer resistance could lead to novel anti-aging and cancer treatments for humans.
