title: Acute leukemia expressing the gamma gene product of the putative second T cell receptor.
abstract: Early thymus-derived lymphocytes bearing the T gamma gene product in association with the CD3(T3) complex have recently been described. We report a unique case of human acute lymphoblastic leukemia with a CD2+, CD3+, CD4-, CD5+, CD7+, CD8-, WT31- phenotype. These cells were found to have T gamma gene rearrangement and T gamma transcripts in absence of T alpha or T beta rearrangement or transcripts. Immunoprecipitation studies with anti-CD3 antibodies showed a 43-kD protein associated with T3; this 43-kD protein is also precipitated with antiserum raised against synthetic peptides representing the constant region of the putative T gamma protein.
mesh_terms: D000954:Antigens, Surface / Q000235:genetics*; D017252:CD3 Complex; D004247:DNA / Q000032:analysis; D004262:DNA Restriction Enzymes / Q000378:metabolism; D015246:Deoxyribonuclease EcoRI; D006801:Humans; D007945:Leukemia, Lymphoid / Q000235:genetics*; D012313:RNA / Q000032:analysis; D011948:Receptors, Antigen, T-Cell / Q000096:biosynthesis* / Q000235:genetics
chemical_list: D000954:Antigens, Surface; D017252:CD3 Complex; D011948:Receptors, Antigen, T-Cell; D012313:RNA; D004247:DNA; D004262:DNA Restriction Enzymes; D015246:Deoxyribonuclease EcoRI