image Bioactive, electrospun polymer nanofibers (NFs) are attractive building-block materials for realizing scaffolds for tissue engineering, as these filaments structurally mimic the hierarchical organization of natural extracellular matrix. As presented in this article, demonstrated applications involve the commitment to adipogenic, chondrogenic, osteogenic, neural lineages, and so on, by different types of stem cells obtained from various sources (adult, embryonic, induced pluripotent stem cells, etc.). Since a poor cellular …