Dual roles of GDNF in enteric glial cell plasticity: direct transdifferentiation via the CaMKII/NeuroD1 pathway and cooperative regulation in a neural stem cell-inducing medium. - Jia W; Yan H; Huang J; Liu W; Fu Z; Tian D; Xu W; Chen X; Gao Y; Yu H (Stem cell research & therapy, 2026)