Abstract
SummaryCell therapy using human-stem-cell-derived pancreatic beta cells (hSC-βs) is a potential treatment method for type 1 diabetes mellitus (T1D). For therapeutic safety, hSC-βs need encapsulation in grafts that are scalable and retrievable. In this study, we developed a lotus-root-shaped cell-encapsulated construct (LENCON) as a graft that can be retrieved after long-term hSC-β transplantation. This graft had six multicores encapsulating hSC-βs located within 1 mm from the edge. It controlled the recipient blood glucose levels for a long-term, following transplantation in immunodeficient diabetic mice. LENCON xenotransplanted into immunocompetent mice exhibited retrievability and maintained the functionality of hSC-βs for over 1 year after transplantation. We believe that LENCON can contribute to the treatment of T1D through long-term transplantation of hSC-βs and in many other forms of cell therapy.
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