title: Tumor necrosis factor receptor -1 and -2 double deficiency reduces graft arterial disease in murine cardiac allografts.
abstract: Graft arterial disease (GAD) remains the leading cause of long-term solid organ allograft failure. Tumor necrosis factor (TNF) promotes multiple aspects of allograft rejection via binding to type 1 (p55) and type 2 (p75) receptors. We used TNF type 1 receptor deficient (TNFR1KO), type 2 receptor deficient (TNFR2KO) and receptor double-deficient (TNFRDKO) mice to assess the relative roles of TNFR in acute rejection and GAD. Heterotopic cardiac transplantation was performed between C57BL/6 (B/6) and Balb/c (B/c) mice (total allomismatches) to assess the effects on graft survival; B/6 and Bm12 mice (class II mismatches) were used to assess the effects on GAD 8 weeks after transplantation. We found that graft survival in the total allomismatch combinations was the same regardless of TNFR status. In class II mismatches, wild-type (WT) combinations showed severe GAD, and GAD was not diminished when WT hearts were transplanted into TNFRDKO hosts. TNFR1KO donors or TNFR2KO donors had GAD comparable to WT donors, however, GAD was significantly diminished in B/6 TNFRDKO donor hearts. We conclude that both p55 and p75 signals on donor vascular wall cells are involved in the development of GAD, and either TNFR is capable of mediating a response that will culminate in GAD.
authors.affiliation: Leducq Center for Cardiovascular Research, Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
authors.forename: Jun-Ichi
authors.initials: J
authors.lastname: Suzuki
authors.forename: Sarah E
authors.initials: SE
authors.lastname: Cole
authors.forename: Saime
authors.initials: S
authors.lastname: Batirel
authors.forename: Hisanori
authors.initials: H
authors.lastname: Kosuge
authors.forename: Koichi
authors.initials: K
authors.lastname: Shimizu
authors.forename: Mitsuaki
authors.initials: M
authors.lastname: Isobe
authors.forename: Peter
authors.initials: P
authors.lastname: Libby
authors.forename: Richard N
authors.initials: RN
authors.lastname: Mitchell
mesh_terms: D000818:Animals; D015703:Antigens, CD / Q000235:genetics / Q000502:physiology*; D001158:Arteries / Q000276:immunology*; D004797:Enzyme-Linked Immunosorbent Assay; D006082:Graft Enhancement, Immunologic; D006084:Graft Rejection / Q000517:prevention & control*; D016027:Heart Transplantation / Q000276:immunology*; D007150:Immunohistochemistry; D007371:Interferon-gamma / Q000235:genetics; D051379:Mice; D008815:Mice, Inbred Strains; D018345:Mice, Knockout; D009131:Muscle, Smooth, Vascular / Q000276:immunology; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D018124:Receptors, Tumor Necrosis Factor / Q000235:genetics / Q000502:physiology*; D047888:Receptors, Tumor Necrosis Factor, Type I; D047889:Receptors, Tumor Necrosis Factor, Type II; D014184:Transplantation, Homologous
chemical_list: D015703:Antigens, CD; D012333:RNA, Messenger; D018124:Receptors, Tumor Necrosis Factor; D047888:Receptors, Tumor Necrosis Factor, Type I; D047889:Receptors, Tumor Necrosis Factor, Type II; D007371:Interferon-gamma