Insulin expression and C-peptide in type 1 diabetes subjects implanted with stem cell-derived pancreatic endoderm cells in an encapsulation device
A M James Shapiro, David Thompson, Thomas W Donner, Melena D Bellin, Willa Hsueh, Jeremy Pettus, Jon Wilensky, Mark Daniels, Richard M Wang, Eugene P Brandon, Manasi S Jaiman, Evert J Kroon, Kevin A D'Amour, Howard L Foyt, A M James Shapiro, David Thompson, Thomas W Donner, Melena D Bellin, Willa Hsueh, Jeremy Pettus, Jon Wilensky, Mark Daniels, Richard M Wang, Eugene P Brandon, Manasi S Jaiman, Evert J Kroon, Kevin A D'Amour, Howard L Foyt
Abstract
These preliminary data from an ongoing first-in-human phase 1/2, open-label study provide proof-of-concept that pluripotent stem cell-derived pancreatic endoderm cells (PEC-01) engrafted in type 1 diabetes patients become islet cells releasing insulin in a physiologically regulated fashion. In this study of 17 subjects aged 22-57 with type 1 diabetes, PEC-01 cells were implanted subcutaneously in VC-02 macroencapsulation devices, allowing for direct vascularization of the cells. Engraftment and insulin expression were observed in 63% of VC-02 units explanted from subjects at 3-12 months post-implant. Six of 17 subjects (35.3%) demonstrated positive C-peptide as early as 6 months post-implant. Most reported adverse events were related to surgical implant or explant procedures (27.9%) or to side-effects of immunosuppression (33.7%). Initial data suggest that pluripotent stem cells, which can be propagated to the desired biomass and differentiated into pancreatic islet-like tissue, may offer a scalable, renewable alternative to pancreatic islet transplants.
Trial registration: ClinicalTrials.gov NCT03163511.
Conflict of interest statement
M.D., R.M.W., E.J.K., E.P.B., K.A.D., M.J., and H.L.F. are employees of ViaCyte and may have equity interest in ViaCyte, Inc., a privately held company. J.S. and J.W. are consultants for ViaCyte and may have equity interest in ViaCyte. ViaCyte has 850 global and US patents. The remaining authors declare no conflicts of interest. Funding sources for this work included the California Institute for Regenerative Medicine, JDRF, and the Stem Cell Network of Canada. These groups were not involved in the research, the writing, or the decision to submit the manuscript for publication. Authors have not been paid by a pharmaceutical company or other organization to write this article.
© 2021 The Authors.
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Source: PubMed