Twelve cases of T gamma LPD (lymphoproliferative disorders of Fc gamma receptor-bearing T cells) involving an expansion of large granular lymphocyte/natural killer (LGL/NK) cells were investigated for the expression of LGL/NK-associated markers and for T beta gene rearrangement. All the cases selected were classified as T gamma LPD on the basis of morphology, function, and phenotype of the circulating cells. 10 to 12 cases displayed clonal rearrangements of the T beta locus and expression of the T3 antigen, whereas the 2 remaining cases displayed the germline configuration of the T beta gene and no expression of the T3 antigen. T8, Mol, B73.1, and N901 antigens were variably expressed among both T beta+T3+ and T beta-T3- T gamma LPD cases. We suggest that individual T gamma LPD cases represent the clonal expansion of cells frozen at different stages of differentiation/activation within an individual hematopoietic LGL/NK lineage.
|Titolo:||T cell receptor beta chain gene rearrangements in lymphoproliferative disorders of large granular lymphocytes/natural killer cells|
|Parole Chiave:||Phenotype; Antigens, Surface; Leukemia; Cytotoxicity, Immunologic; Antigens, Differentiation, T-Lymphocyte; Lymphocytosis; Killer Cells, Natural; Humans; Receptors, Antigen, T-Cell; Nucleic Acid Hybridization; Lymphoproliferative Disorders; T-Lymphocytes|
|Settore Scientifico Disciplinare:||Settore MED/04 - Patologia Generale|
|Data di pubblicazione:||1-dic-1985|
|Digital Object Identifier (DOI):||10.1084/jem.162.6.2156|
|Appare nelle tipologie:||01 - Articolo su periodico|