Oxygen Sensing Governs Limb Regeneration

Researchers led by Can Aztekin at École Polytechnique Fédérale de Lausanne and Max Planck Society have discovered that oxygen sensing plays a crucial role in vertebrate limb regeneration. The study, published in Science (journal), explains why amphibians can regenerate lost limbs while mammals cannot. They found that low oxygen levels or the stabilization of the protein HIF1A can trigger early regenerative programs in mammalian embryonic limbs, suggesting that mammals retain a latent regenerative potential. This research provides a fresh perspective on a long-standing biological question and outlines a testable path toward promoting limb regeneration in adult mammals, potentially leading to advancements in wound healing and regenerative medicine.