Biomaterial Database

Induction of Ia antigen expression on murine islet parenchymal cells does not diminish islet allograft survival. 1989

J R Wright, and V Hauptfeld, and P E Lacy

Hospital for Children, Department of Pathology, Dalhousie University Faculty of Medicine, Nova Scotia, Canada.

Aberrant Ia antigen expression has been implicated in the pathogenesis of type 1 diabetes. Ia antigen expression was induced on isolated B10.BR murine islet parenchymal cells by culturing them for 5 days with lymphokine supernatants containing interferon-gamma (IFN-gamma) or with recombinant murine IFN-gamma + recombinant tumor necrosis factor. Ia positivity was confirmed by indirect immunofluorescence. Islets cultured for 5 days without cytokines were Ia-negative. Purified B10.BR islets allografted into the portal veins of C57BL/6J mice do not reject, which allowed the authors to determine whether aberrant expression of Ia on parenchymal cells has a deleterious effect on allograft survival. Ia-positive or Ia-negative islets were transplanted via the portal vein into diabetic C57BL/6J mice. All mice remained normoglycemic until they were killed at 30 to 60 days. Well-granulated islet allografts were identified histologically in all mice. The experiment was repeated using Balb/cJ mice as donors. Purified Balb/cJ islets are rapidly rejected by C57BL/6J mice. Induction of Ia expression on Balb/cJ islets significantly improved allograft survival. These findings indicate that Ia-positive islet cells do not induce rejection in these allograft models but may actually have a protective effect.

UI	MeSH Term	Description	Entries
D007515	Islets of Langerhans	Irregular microscopic structures consisting of cords of endocrine cells that are scattered throughout the PANCREAS among the exocrine acini. Each islet is surrounded by connective tissue fibers and penetrated by a network of capillaries. There are four major cell types. The most abundant beta cells (50-80%) secrete INSULIN. Alpha cells (5-20%) secrete GLUCAGON. PP cells (10-35%) secrete PANCREATIC POLYPEPTIDE. Delta cells (~5%) secrete SOMATOSTATIN.	Islands of Langerhans,Islet Cells,Nesidioblasts,Pancreas, Endocrine,Pancreatic Islets,Cell, Islet,Cells, Islet,Endocrine Pancreas,Islet Cell,Islet, Pancreatic,Islets, Pancreatic,Langerhans Islands,Langerhans Islets,Nesidioblast,Pancreatic Islet
D008099	Liver	A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances.	Livers
D008297	Male		Males
D008815	Mice, Inbred Strains	Genetically identical individuals developed from brother and sister matings which have been carried out for twenty or more generations, or by parent x offspring matings carried out with certain restrictions. All animals within an inbred strain trace back to a common ancestor in the twentieth generation.	Inbred Mouse Strains,Inbred Strain of Mice,Inbred Strain of Mouse,Inbred Strains of Mice,Mouse, Inbred Strain,Inbred Mouse Strain,Mouse Inbred Strain,Mouse Inbred Strains,Mouse Strain, Inbred,Mouse Strains, Inbred,Strain, Inbred Mouse,Strains, Inbred Mouse
D006085	Graft Survival	The survival of a graft in a host, the factors responsible for the survival and the changes occurring within the graft during growth in the host.	Graft Survivals,Survival, Graft,Survivals, Graft
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D000949	Histocompatibility Antigens Class II	Large, transmembrane, non-covalently linked glycoproteins (alpha and beta). Both chains can be polymorphic although there is more structural variation in the beta chains. The class II antigens in humans are called HLA-D ANTIGENS and are coded by a gene on chromosome 6. In mice, two genes named IA and IE on chromosome 17 code for the H-2 antigens. The antigens are found on B-lymphocytes, macrophages, epidermal cells, and sperm and are thought to mediate the competence of and cellular cooperation in the immune response. The term IA antigens used to refer only to the proteins encoded by the IA genes in the mouse, but is now used as a generic term for any class II histocompatibility antigen.	Antigens, Immune Response,Class II Antigens,Class II Histocompatibility Antigen,Class II Major Histocompatibility Antigen,Ia Antigens,Ia-Like Antigen,Ia-Like Antigens,Immune Response Antigens,Immune-Associated Antigens,Immune-Response-Associated Antigens,MHC Class II Molecule,MHC II Peptide,Class II Antigen,Class II Histocompatibility Antigens,Class II MHC Proteins,Class II Major Histocompatibility Antigens,Class II Major Histocompatibility Molecules,I-A Antigen,I-A-Antigen,IA Antigen,MHC Class II Molecules,MHC II Peptides,MHC-II Molecules,Antigen, Class II,Antigen, I-A,Antigen, IA,Antigen, Ia-Like,Antigens, Class II,Antigens, Ia,Antigens, Ia-Like,Antigens, Immune-Associated,Antigens, Immune-Response-Associated,I A Antigen,II Peptide, MHC,Ia Like Antigen,Ia Like Antigens,Immune Associated Antigens,Immune Response Associated Antigens,MHC II Molecules,Molecules, MHC-II,Peptide, MHC II,Peptides, MHC II
D014184	Transplantation, Homologous	Transplantation between individuals of the same species. Usually refers to genetically disparate individuals in contradistinction to isogeneic transplantation for genetically identical individuals.	Transplantation, Allogeneic,Allogeneic Grafting,Allogeneic Transplantation,Allografting,Homografting,Homologous Transplantation,Grafting, Allogeneic
D016381	Islets of Langerhans Transplantation	The transference of pancreatic islets within an individual, between individuals of the same species, or between individuals of different species.	Grafting, Islets of Langerhans,Pancreatic Islets Transplantation,Transplantation, Islets of Langerhans,Transplantation, Pancreatic Islets,Islands of Langerhans Transplantation,Islands of Pancreas Transplantation,Islet Transplantation,Transplantation, Islands of Langerhans,Transplantation, Islands of Pancreas,Transplantation, Islet,Islet Transplantations,Islets Transplantation, Pancreatic,Transplantations, Islet
D051379	Mice	The common name for the genus Mus.	Mice, House,Mus,Mus musculus,Mice, Laboratory,Mouse,Mouse, House,Mouse, Laboratory,Mouse, Swiss,Mus domesticus,Mus musculus domesticus,Swiss Mice,House Mice,House Mouse,Laboratory Mice,Laboratory Mouse,Mice, Swiss,Swiss Mouse,domesticus, Mus musculus