title: Expression of differentiation antigens by hybrids of human lymphoblastoid cells.
abstract: In previous communications, we have described the expression of class I and class II histocompatibility antigens by hybrids of human B and T lymphoblastoid cell lines (B- and T-LCL). In all cases, such hybrids were found to resemble their B-LCL parents, expressing high levels of class I and class II antigens encoded by both parent cell lines. In the current study, we have conducted a more extensive analysis of B-LCLxT-LCL hybrids with a panel of monoclonal antibodies recognizing a variety of B and T lymphocyte differentiation markers. Rather than exhibiting a B-LCL-dominant phenotype, most hybrids were found to express a majority of both T and B lymphocyte antigens expressed by their parent cell lines. Several hybrids of pairs of dissimilar T-LCL were also produced and analyzed. Again, a majority of parental antigens was expressed on the hybrids. However, eight of eight hybrids of the T-LCL CEM and HSB failed to express HNK-1, an antigen strongly expressed by HSB; and two hybrids of the T-LCL CEM and SKW3 expressed CD3, an antigen expressed by neither parent cell line.
mesh_terms: D000911:Antibodies, Monoclonal / Q000276:immunology; D000945:Antigens, Differentiation, T-Lymphocyte; D000954:Antigens, Surface / Q000032:analysis* / Q000235:genetics; D005786:Gene Expression Regulation; D006133:Growth Substances / Q000032:analysis* / Q000235:genetics; D006801:Humans; D006822:Hybrid Cells / Q000276:immunology; D015847:Interleukin-4; D008214:Lymphocytes / Q000276:immunology*; D008222:Lymphokines / Q000032:analysis* / Q000235:genetics; D010641:Phenotype
chemical_list: D000911:Antibodies, Monoclonal; D000945:Antigens, Differentiation, T-Lymphocyte; D000954:Antigens, Surface; D006133:Growth Substances; D008222:Lymphokines; D015847:Interleukin-4