title: IFN-gamma production by intrinsic renal cells and bone marrow-derived cells is required for full expression of crescentic glomerulonephritis in mice.
abstract: The contribution of IFN-gamma from bone marrow (BM) and non-BM-derived cells to glomerular and cutaneous delayed-type hypersensitivity (DTH) was studied in mice. Chimeric IFN-gamma mice (IFN-gamma(+/+) BM chimera), in which IFN-gamma production was restricted to BM-derived cells, were created by transplanting normal C57BL/6 (wild-type (WT)) BM into irradiated IFN-gamma-deficient mice. BM IFN-gamma-deficient chimeric mice (IFN-gamma(-/-) BM chimera) were created by transplanting WT mice with IFN-gamma-deficient BM. WT and sham chimeric mice (WT mice transplanted with WT BM) developed crescentic glomerulonephritis (GN) with features of DTH (including glomerular T cell and macrophage infiltration) in response to an Ag planted in their glomeruli and skin DTH following subdermal Ag challenge. IFN-gamma-deficient mice showed significant protection from crescentic GN and reduced cutaneous DTH. IFN-gamma(+/+) BM chimeric and IFN-gamma(-/-) BM chimeric mice showed similar attenuation of crescentic GN as IFN-gamma-deficient mice, whereas cutaneous DTH was reduced only in IFN-gamma(-/-) BM chimeras. In crescentic GN, IFN-gamma was expressed by tubular cells and occasional glomerular cells and was colocalized with infiltrating CD8(+) T cells, but not with CD4(+) T cells or macrophages. Renal MHC class II expression was reduced in IFN-gamma(+/+) BM chimeric mice and was more severely reduced in IFN-gamma-deficient mice and IFN-gamma(-/-) BM chimeric mice. These studies show that IFN-gamma expression by both BM-derived cells and intrinsic renal cells is required for the development of crescentic GN, but IFN-gamma production by resident cells is not essential for the development of cutaneous DTH.
authors.affiliation: Center for Inflammatory Diseases, Monash University, and Department of Medicine, Monash Medical Center, Clayton, Victoria, Australia.
authors.forename: Jennifer R
authors.initials: JR
authors.lastname: Timoshanko
authors.forename: Stephen R
authors.initials: SR
authors.lastname: Holdsworth
authors.forename: A Richard
authors.initials: AR
authors.lastname: Kitching
authors.forename: Peter G
authors.initials: PG
authors.lastname: Tipping
mesh_terms: D000818:Animals; D000888:Antibodies, Anti-Idiotypic / Q000096:biosynthesis / Q000097:blood; D001854:Bone Marrow Cells / Q000276:immunology* / Q000378:metabolism* / Q000473:pathology; D016026:Bone Marrow Transplantation / Q000276:immunology / Q000473:pathology; D005921:Glomerulonephritis / Q000276:immunology* / Q000473:pathology / Q000517:prevention & control; D000949:Histocompatibility Antigens Class II / Q000096:biosynthesis; D006968:Hypersensitivity, Delayed / Q000276:immunology; D007371:Interferon-gamma / Q000096:biosynthesis* / Q000172:deficiency / Q000235:genetics; D007668:Kidney / Q000276:immunology* / Q000378:metabolism* / Q000473:pathology; D007678:Kidney Glomerulus / Q000276:immunology / Q000378:metabolism / Q000473:pathology; D008297:Male; D051379:Mice; D008810:Mice, Inbred C57BL; D018345:Mice, Knockout; D011828:Radiation Chimera / Q000235:genetics / Q000276:immunology; D012720:Severity of Illness Index; D012756:Sheep; D013154:Spleen / Q000276:immunology / Q000378:metabolism
chemical_list: D000888:Antibodies, Anti-Idiotypic; D000949:Histocompatibility Antigens Class II; D007371:Interferon-gamma