449-TMEM63A regulates myelin sheath geometry

Paper Talk · Jan 30, 2026 · 17m

This research investigates how oligodendrocytes sense and respond to the physical dimensions of the axons they wrap in myelin. The study identifies TMEM63A as a critical mechanosensitive ion channel that allows these cells to convert mechanical pressure into calcium signaling during development. Through experiments with knockout mice and zebrafish, the authors demonstrate that a lack of this channel leads to shorter myelin segments, wider gaps between nodes, and slower nerve conduction. These biological defects manifest as gait and motor coordination issues in animal models, mirroring…