Progress in islet xenotransplantation: immunologic barriers, advances in gene editing, and tolerance induction strategies for xenogeneic islets in pig-to-primate transplantation

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SUMMARY

    Xenogeneic islets may be particularly vulnerable to T_cell mediated rejection as studies have shown that prolonged survival of porcine xenografts in athymic mice and prolonged islet survival using T_cell targeted immunosuppression strategies. The CD40-CD154 pathway influences T_cell-dependent antibody production, and modulation of this costimulatory interaction seems to be critical for rejection-free survival in heart and kidney xenograft transplantation. The tolerance strategies discussed here include regulatory T_cell (Treg) infusions, mixed hematopoietic cell chimerism, and thymus transplantation. Induction of tolerance with Tregs in islet transplantation Regulatory T_cells (Tregs) have been shown to play . . .

     

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