Entry
Name
Allograft rejection - Homo sapiens (human)
Description
Allograft rejection is the consequence of the recipient's alloimmune response to nonself antigens expressed by donor tissues. After transplantation of organ allografts, there are two pathways of antigen presentation. In the direct pathway, recipient T cells react to intact allogeneic MHC molecules expressed on the surface of donor cells. This pathway would activate host CD4 or CD8 T cells. In contrast, donor MHC molecules (and all other proteins) shed from the graft can be taken up by host APCs and presented to recipient T cells in the context of self-MHC molecules - the indirect pathway. Such presentation activates predominantly CD4 T cells. A direct cytotoxic T-cell attack on graft cells can be made only by T cells that recognize the graft MHC molecules directly. Nontheless, T cells with indirect allospecificity can contribute to graft rejection by activating macrophages, which cause tissue injury and fibrosis, and are also likely to be important in the development of an alloantibody response to graft.
Class
Human Diseases; Immune disease
BRITE hierarchy
Pathway map
Ortholog table
Disease
Drug
Organism
Homo sapiens (human) [GN:
hsa ]
Gene
3105 HLA-A; major histocompatibility complex, class I, A [KO:K06751 ]
3106 HLA-B; major histocompatibility complex, class I, B [KO:K06751 ]
3107 HLA-C; major histocompatibility complex, class I, C [KO:K06751 ]
3134 HLA-F; major histocompatibility complex, class I, F [KO:K06751 ]
3135 HLA-G; major histocompatibility complex, class I, G [KO:K06751 ]
3133 HLA-E; major histocompatibility complex, class I, E [KO:K06751 ]
355 FAS; Fas cell surface death receptor [KO:K04390 ]
3108 HLA-DMA; major histocompatibility complex, class II, DM alpha [KO:K06752 ]
3109 HLA-DMB; major histocompatibility complex, class II, DM beta [KO:K06752 ]
3111 HLA-DOA; major histocompatibility complex, class II, DO alpha [KO:K06752 ]
3112 HLA-DOB; major histocompatibility complex, class II, DO beta [KO:K06752 ]
3113 HLA-DPA1; major histocompatibility complex, class II, DP alpha 1 [KO:K06752 ]
3115 HLA-DPB1; major histocompatibility complex, class II, DP beta 1 [KO:K06752 ]
3117 HLA-DQA1; major histocompatibility complex, class II, DQ alpha 1 [KO:K06752 ]
3118 HLA-DQA2; major histocompatibility complex, class II, DQ alpha 2 [KO:K06752 ]
3119 HLA-DQB1; major histocompatibility complex, class II, DQ beta 1 [KO:K06752 ]
3122 HLA-DRA; major histocompatibility complex, class II, DR alpha [KO:K06752 ]
3123 HLA-DRB1; major histocompatibility complex, class II, DR beta 1 [KO:K06752 ]
3125 HLA-DRB3; major histocompatibility complex, class II, DR beta 3 [KO:K06752 ]
3126 HLA-DRB4; major histocompatibility complex, class II, DR beta 4 [KO:K06752 ]
3127 HLA-DRB5; major histocompatibility complex, class II, DR beta 5 [KO:K06752 ]
Compound
Reference
Authors
Arakelov A, Lakkis FG.
Title
The alloimmune response and effector mechanisms of allograft rejection.
Journal
Semin Nephrol 20:95-102 (2000)
Reference
Authors
Le Moine A, Goldman M, Abramowicz D.
Title
Multiple pathways to allograft rejection.
Journal
Reference
Authors
Trivedi HL.
Title
Immunobiology of rejection and adaptation.
Journal
Reference
Authors
Pietra BA.
Title
Transplantation immunology 2003: simplified approach.
Journal
Reference
Authors
Oka T, Yoshimura N.
Title
Immunosuppression in organ transplantation.
Journal
Reference
Authors
Sayegh MH.
Title
Why do we reject a graft? Role of indirect allorecognition in graft rejection.
Journal
Reference
Authors
Benichou G.
Title
Direct and indirect antigen recognition: the pathways to allograft immune rejection.
Journal
Reference
Authors
Turvey SE, Wood KJ.
Title
Immunobiology of solid organ transplantation.
Journal
Int Surg 84:279-90 (1999)
Reference
Authors
Janeway CA, Travers P, Walport M, Shlomchik MJ.
Title
Immunobiology 6th edition
Journal
Garland Science Publishing (2005)
Reference
Authors
Game DS, Lechler RI.
Title
Pathways of allorecognition: implications for transplantation tolerance.
Journal
Reference
Authors
Lechler RI, Garden OA, Turka LA.
Title
The complementary roles of deletion and regulation in transplantation tolerance.
Journal
Related pathway
hsa04610 Complement and coagulation cascades
hsa04612 Antigen processing and presentation
hsa04660 T cell receptor signaling pathway
hsa04662 B cell receptor signaling pathway
KO pathway