title: The nature of allorecognition.
abstract: Understanding the nature of allorecognition is fundamental to the design of antigen-specific therapies for transplantation. As recently as 10 years ago it was generally believed that recognition of major histocompatibility complex (MHC) molecules by T lymphocytes was direct and represented the "simplest" kind of T-lymphocyte interaction. It is now clear that the nature of allorecognition is complex, involving a variety of different forms of MHC antigens with or without peptides contained in their antigen-binding groove. In addition, there is renewed interest in alternative forms of allorecognition, including so-called indirect allorecognition, in which donor alloantigens are recognized as peptides in the context of recipient self. Lastly, it appears that cells other than T lymphocytes, eg, natural killer cells, are capable of antigen-specific recognition and may be responsible for heretofore underappreciated mechanisms of transplant rejection.
authors.affiliation: Department of Pediatrics, Stanford University Medical Center, CA 94305-5119.
authors.forename: A M
authors.initials: AM
authors.lastname: Krensky
authors.forename: C
authors.initials: C
authors.lastname: Clayberger
mesh_terms: D015395:Histocompatibility Antigens Class I / Q000276:immunology; D006801:Humans; D007519:Isoantigens / Q000276:immunology*; D016030:Kidney Transplantation / Q000276:immunology; D007694:Killer Cells, Natural / Q000276:immunology; D008285:Major Histocompatibility Complex / Q000276:immunology*; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D015395:Histocompatibility Antigens Class I; D007519:Isoantigens