Pig-to-nonhuman primates pancreatic islet xenotransplantation: an overview.

Abstract:

:The therapy of type 1 diabetes is an open challenging problem. The restoration of normoglycemia and insulin independence in immunosuppressed type 1 diabetic recipients of islet allotransplantation has shown the potential of a cell-based diabetes therapy. Even if successful, this approach poses a problem of scarce tissue supply. Xenotransplantation can be the answer to this limited donor availability and, among possible candidate tissues for xenotransplantation, porcine islets are the closest to a future clinical application. Xenotransplantation, with pigs as donors, offers the possibility of using healthy, living, and genetically modified islets from pathogen-free animals available in unlimited number of islets. Several studies in the pig-to-nonhuman primate model demonstrated the feasibility of successful preclinical islet xenotransplantation and have provided insights into the critical events and possible mechanisms of immune recognition and rejection of xenogeneic islet grafts. Particularly promising results in the achievement of prolonged insulin independence were obtained with newly developed, genetically modified pigs islets able to produce immunoregulatory products, using different implantation sites, and new immunotherapeutic strategies. Nonetheless, further efforts are needed to generate additional safety and efficacy data in nonhuman primate models to safely translate these findings into the clinic.

journal_name

Curr Diab Rep

journal_title

Current diabetes reports

authors

Marigliano M,Bertera S,Grupillo M,Trucco M,Bottino R

doi

10.1007/s11892-011-0213-z

subject

Has Abstract

pub_date

2011-10-01 00:00:00

pages

402-12

issue

5

eissn

1534-4827

issn

1539-0829

journal_volume

11

pub_type

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