Wake Forest Team Identifies 2 Regeneration Genes, Restores Bone Growth in Mice
Updated
Updated · 헤럴드인사이트 · Jun 14
Wake Forest Team Identifies 2 Regeneration Genes, Restores Bone Growth in Mice
1 articles · Updated · 헤럴드인사이트 · Jun 14
Summary
SP6 and SP8 emerged as key regeneration genes across axolotls, zebrafish and mice, with the latest experiments showing some bone regrowth in mice after a gene-therapy treatment.
CRISPR tests helped establish their role: axolotls missing SP8 could no longer properly regrow limb bones, and mice lacking the SP genes showed similar regeneration defects.
The therapy drew on zebrafish biology by using FGF8, a signaling molecule normally activated by SP8, suggesting parts of the regeneration program can be bypassed or reactivated in mammals.
More than 1 million amputations occur worldwide each year, and researchers say the animal-only findings are still early but could guide future human treatments for limb and bone loss.
Will our own immune system's scarring reflex make this limb regeneration therapy fail in humans?
If we can regrow bone, how do we solve the puzzle of reconnecting every nerve, muscle, and blood vessel?
Could reactivating this dormant evolutionary 'regeneration software' in humans unleash unintended consequences like cancer?
From Salamanders to Humans: Universal SP Genes and the Future of Limb Regeneration
Overview
Recent research has identified a group of SP genes that act as universal drivers of regeneration in animals like mice, zebrafish, and axolotls. These genes form a shared biological blueprint for regeneration, and humans also possess them. However, in humans, a biological mechanism deactivates these SP genes shortly after birth, which prevents us from regenerating lost limbs. Excitingly, scientists now see a promising path forward: using gene therapy to reactivate these dormant genes, similar to how they work in salamanders. This breakthrough could one day enable true human limb regeneration by unlocking our body's natural repair programs.