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Alloreactivity but Failure to Reject Human Islet Transplants by Humanized Balb/c/Rag2(-/-)gc(-/-) Mice
Vise andre og tillknytning
2010 (engelsk)Inngår i: Scandinavian Journal of Immunology, ISSN 0300-9475, E-ISSN 1365-3083, Vol. 71, nr 2, s. 83-90Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A human islet transplant can cure patients with type 1 diabetes. A drawback of islet transplantation is the life-long immunosuppressive medication, often associated with severe side effects. Moreover, in spite of the immunosuppressive therapy, islets are lost in the majority of transplanted patients over time. An improved small animal model for studies on human islet allograft rejection mechanisms and the development of new measures for its prevention is clearly warranted. Here, we evaluated the potential of Balb/cRag2(-/-)gamma c(-/-) mice carrying a human-like immune system (so-called humanized mice) as a tool for studies on the rejection of transplanted human islets. Human T cells from Balb/cRag2(-/-)gamma c(-/-) mice, which as neonates had been transplanted with CD34(+) human cord blood haematopoietic stem cells (HIS mice), proliferated in response to allogeneic human dendritic cells, but failed to reject a human islet allograft transplanted to the renal subcapsular space as assessed by immunohistochemistry and analysis of human serum C-peptide levels. Histological analysis revealed that few if any T cells had migrated to the grafted tissue. These observations question the usefulness of the HIS mouse model for studies on human islet allograft rejection mechanisms and highlight the need for further improvements.

sted, utgiver, år, opplag, sider
2010. Vol. 71, nr 2, s. 83-90
HSV kategori
Identifikatorer
URN: urn:nbn:se:uu:diva-137808DOI: 10.1111/j.1365-3083.2009.02356.xISI: 000273688300003OAI: oai:DiVA.org:uu-137808DiVA: diva2:379345
Tilgjengelig fra: 2010-12-17 Laget: 2010-12-16 Sist oppdatert: 2017-12-11bibliografisk kontrollert

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