title: A cytotoxic monoclonal IgM antibody (Tü 101) directed against an antigenic determinant shared between the HLA-A allospecificities A2 and A28.
abstract: A complement-fixing murine monoclonal IgM antibody (TU 101) strictly directed against a supertypic determinant present on the HLA-A locus antigens A2 and A28 was defined from a fusion experiment employing T cell blasts as immunizing cells. The specificity of this antibody was established in the microcytotoxicity assay on 91 normal Caucasian blood donors, as well as in the SpA-Ig assay on a panel of lympho- and hematopoietic cell lines. TU 101 segregates only with its defined HLA allotypes in families. This reagent may be of particular value as a probe for analyzing a molecular relationship of different antigenic determinants on the HLA-A2 and A28 specificities in comparison with two recently defined anti-HLA-A2/A28 monoclonal antibodies and may help to characterize structural variations of these HLA-molecules on a serological and immunochemical basis.
mesh_terms: D000818:Animals; D000911:Antibodies, Monoclonal / Q000502:physiology*; D000961:Antilymphocyte Serum / Q000494:pharmacology*; D003601:Cytotoxicity Tests, Immunologic; D000939:Epitopes / Q000276:immunology*; D005260:Female; D006680:HLA Antigens / Q000235:genetics / Q000276:immunology*; D015789:HLA-A2 Antigen; D006801:Humans; D006825:Hybridomas / Q000276:immunology; D007075:Immunoglobulin M / Q000032:analysis; D051379:Mice; D008807:Mice, Inbred BALB C; D010375:Pedigree
chemical_list: D000911:Antibodies, Monoclonal; D000961:Antilymphocyte Serum; D000939:Epitopes; D006680:HLA Antigens; D015789:HLA-A2 Antigen; D007075:Immunoglobulin M