title: HLA typing using IL-2 activated T lymphocytes: usefulness in pediatric candidates for allogeneic bone marrow transplantation.
abstract: Following a preliminary study in healthy blood donors, we have performed serological HLA-A, B, C, DR and DQ typing using recombinant IL-2 activated T lymphocytes (IL-2.aTLs) in pediatric candidates for allogeneic bone marrow transplantation. In such patients, it is often difficult to obtain the quantity of lymphocytes required for HLA typing, particularly for class II typing using B lymphocytes, considering the timing of sampling and the volume of blood to be collected. Peripheral blood mononuclear cells (PBMCs) were activated and expanded with IL-2 until a sufficient number of IL-2.aTLs of good viability were available for the typing. In the first 10 cases, analyses of surface markers (CD2, CD20, CD25, CD36, HLA-DR and HLA-DQ, CD2/HLA-DR: two color) of IL-2.aTLs were done using flow cytometry at the time of HLA typing and indicated that IL-2.aTLs expressed HLA-DR and DQ antigens sufficient for evaluation. A small number (less than 10(6] of fresh or cryopreserved PBMCs, even those containing leukemic blast cells, were sufficient to induce and expand IL-2.aTLs for HLA typing. To date we have been able to successfully HLA-A, B, C, DR and DQ type 20/20 pediatric candidates. The HLA antigens identified on the patients' IL-2.aTLs were confirmed by a family study.
authors.affiliation: Japanese Red Cross Hiroshima Blood Center.
authors.forename: K
authors.initials: K
authors.lastname: Kubo
authors.forename: J
authors.initials: J
authors.lastname: Tachino
authors.forename: S
authors.initials: S
authors.lastname: Ichikawa
authors.forename: K
authors.initials: K
authors.lastname: Hamamoto
authors.forename: K
authors.initials: K
authors.lastname: Ueda
mesh_terms: D000293:Adolescent; D000911:Antibodies, Monoclonal / Q000276:immunology; D015703:Antigens, CD / Q000276:immunology; D018951:Antigens, CD20; D000944:Antigens, Differentiation, B-Lymphocyte / Q000276:immunology; D000945:Antigens, Differentiation, T-Lymphocyte / Q000276:immunology; D000954:Antigens, Surface / Q000276:immunology; D016026:Bone Marrow Transplantation / Q000276:immunology*; D018801:CD2 Antigens; D018955:CD36 Antigens; D002648:Child; D002675:Child, Preschool; D005260:Female; D005434:Flow Cytometry; D006680:HLA Antigens / Q000276:immunology*; D006683:HLA-DQ Antigens / Q000276:immunology; D015395:Histocompatibility Antigens Class I / Q000276:immunology; D000949:Histocompatibility Antigens Class II / Q000276:immunology; D006650:Histocompatibility Testing; D006801:Humans; D016130:Immunophenotyping; D007376:Interleukin-2 / Q000494:pharmacology*; D008213:Lymphocyte Activation / Q000187:drug effects*; D008297:Male; D011971:Receptors, Immunologic / Q000276:immunology; D015375:Receptors, Interleukin-2 / Q000276:immunology; D011994:Recombinant Proteins / Q000494:pharmacology; D013601:T-Lymphocytes / Q000187:drug effects / Q000276:immunology*; D014184:Transplantation, Homologous
chemical_list: D000911:Antibodies, Monoclonal; D015703:Antigens, CD; D018951:Antigens, CD20; D000944:Antigens, Differentiation, B-Lymphocyte; D000945:Antigens, Differentiation, T-Lymphocyte; D000954:Antigens, Surface; D018801:CD2 Antigens; D018955:CD36 Antigens; D006680:HLA Antigens; D006683:HLA-DQ Antigens; D015395:Histocompatibility Antigens Class I; D000949:Histocompatibility Antigens Class II; D007376:Interleukin-2; D011971:Receptors, Immunologic; D015375:Receptors, Interleukin-2; D011994:Recombinant Proteins