1. Laminin fragments conjugated with perlecan's growth factor-binding domain differentiate human induced pluripotent stem cells into skin-derived precursor cells.
- Author
-
Sugiyama-Nakagiri Y, Yamashita S, Taniguchi Y, Shimono C, and Sekiguchi K
- Subjects
- Humans, Adipocytes cytology, Adipocytes drug effects, Osteocytes cytology, Osteocytes drug effects, Schwann Cells cytology, Schwann Cells drug effects, Recombinant Fusion Proteins chemistry, Recombinant Fusion Proteins pharmacology, Cell Differentiation drug effects, Heparan Sulfate Proteoglycans chemistry, Induced Pluripotent Stem Cells cytology, Induced Pluripotent Stem Cells drug effects, Intercellular Signaling Peptides and Proteins metabolism, Laminin chemistry, Laminin pharmacology, Peptide Fragments chemistry, Peptide Fragments pharmacology, Protein Domains, Skin cytology
- Abstract
Deriving stem cells to regenerate full-thickness human skin is important for treating skin disorders without invasive surgical procedures. Our previous protocol to differentiate human induced pluripotent stem cells (iPSCs) into skin-derived precursor cells (SKPs) as a source of dermal stem cells employs mouse fibroblasts as feeder cells and is therefore unsuitable for clinical use. Herein, we report a feeder-free method for differentiating iPSCs into SKPs by customising culture substrates. We immunohistochemically screened for laminins expressed in dermal papillae (DP) and explored the conditions for inducing the differentiation of iPSCs into SKPs on recombinant laminin E8 (LM-E8) fragments with or without conjugation to domain I of perlecan (PDI), which binds to growth factors through heparan sulphate chains. Several LM-E8 fragments, including those of LM111, 121, 332, 421, 511, and 521, supported iPSC differentiation into SKPs without PDI conjugation. However, the SKP yield was significantly enhanced on PDI-conjugated LM-E8 fragments. SKPs induced on PDI-conjugated LM111-E8 fragments retained the gene expression patterns characteristic of SKPs, as well as the ability to differentiate into adipocytes, osteocytes, and Schwann cells. Thus, PDI-conjugated LM-E8 fragments are promising agents for inducing iPSC differentiation into SKPs in clinical settings., (© 2023. Springer Nature Limited.)
- Published
- 2023
- Full Text
- View/download PDF