Genome Study Reveals Secrets of 194-Year-Old Tortoise Jonathan

Jonathan, the world’s oldest living land animal at roughly 194 years old, has had his genome sequenced for the first time. Researchers discovered unique gene variants in aging pathways, including DNA repair, insulin regulation, and mitochondrial function. The study, published in Science Advances, compared Jonathan’s genome with that of younger tortoises, revealing unusually pristine methylation related to mitochondrial processes, suggesting these pathways may contribute to his extreme lifespan. The research faced logistical challenges, including sample collection and regulatory hurdles, but ultimately provided insights into aging mechanisms. The findings could inform efforts to extend human healthspan and lifespan.