Diosgenin enhances transplanted human oligodendrocyte precursor cell-mediated myelination in preterm white matter injury by inhibiting matrix metalloproteinase-9–driven TGF-β/Smad2/3 signaling
Findings uncover a previously unrecognized MMP-9–TGFβ–Smad2/3 axis controlling hOPC-mediated myelin repair, and establish diosgenin as a promising adjunct therapeutic agent for cell-based strategies against PWMI and other white matter disorders.