817-AhR: Brake on Stress Adaptation and Axon Regeneration

Paper Talk · Apr 18, 2026 · 22m

This research identifies the aryl hydrocarbon receptor (AhR) as a critical molecular "brake" that limits the ability of the central nervous system to repair itself after injury. While neurons naturally activate AhR to manage cellular stress and maintain tissue integrity, this response inadvertently suppresses the metabolic and genetic programs required for axon regeneration. The study demonstrates that either genetic deletion or pharmacological inhibition of this receptor effectively flips a "stress-growth switch," redirecting neuronal resources toward protein synthesis and rapid regrowth…