Abnormalities in T-cell associated rearrangement of T-cell receptor gamma chain genes in B-cell chronic lymphocytic leukemia. 1989

B F Leber, and J J Murphy, and J D Norton
Department of Haematology, Royal Free Hospital School of Medicine, London, U.K.

Non-random rearrangement of genes encoding the gamma chain of the T-cell antigen receptor is known to occur in a developmentally regulated fashion during thymocyte differentiation. We show here that peripheral blood T lymphocytes from patients with B-cell chronic lymphocytic leukemia display marked abnormalities in the spectrum of gamma variable region gene rearrangements compared with normal peripheral blood. Of seven patients studied, all displayed a reduction of rearrangements into V9 (subgroup V II), while two cases had, in addition, over-representation of specific rearrangements involving subgroup V I; one V 2/4, the other V 5. These observations have a number of implications relevant to mechanisms of disease pathogenesis, and may provide new insight into the basis of T-cell dysfunction that is frequently associated with this condition.

UI MeSH Term Description Entries
D004262 DNA Restriction Enzymes Enzymes that are part of the restriction-modification systems. They catalyze the endonucleolytic cleavage of DNA sequences which lack the species-specific methylation pattern in the host cell's DNA. Cleavage yields random or specific double-stranded fragments with terminal 5'-phosphates. The function of restriction enzymes is to destroy any foreign DNA that invades the host cell. Most have been studied in bacterial systems, but a few have been found in eukaryotic organisms. They are also used as tools for the systematic dissection and mapping of chromosomes, in the determination of base sequences of DNAs, and have made it possible to splice and recombine genes from one organism into the genome of another. EC 3.21.1. Restriction Endonucleases,DNA Restriction Enzyme,Restriction Endonuclease,Endonuclease, Restriction,Endonucleases, Restriction,Enzymes, DNA Restriction,Restriction Enzyme, DNA,Restriction Enzymes, DNA
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013601 T-Lymphocytes Lymphocytes responsible for cell-mediated immunity. Two types have been identified - cytotoxic (T-LYMPHOCYTES, CYTOTOXIC) and helper T-lymphocytes (T-LYMPHOCYTES, HELPER-INDUCER). They are formed when lymphocytes circulate through the THYMUS GLAND and differentiate to thymocytes. When exposed to an antigen, they divide rapidly and produce large numbers of new T cells sensitized to that antigen. T Cell,T Lymphocyte,T-Cells,Thymus-Dependent Lymphocytes,Cell, T,Cells, T,Lymphocyte, T,Lymphocyte, Thymus-Dependent,Lymphocytes, T,Lymphocytes, Thymus-Dependent,T Cells,T Lymphocytes,T-Cell,T-Lymphocyte,Thymus Dependent Lymphocytes,Thymus-Dependent Lymphocyte
D015139 Blotting, Southern A method (first developed by E.M. Southern) for detection of DNA that has been electrophoretically separated and immobilized by blotting on nitrocellulose or other type of paper or nylon membrane followed by hybridization with labeled NUCLEIC ACID PROBES. Southern Blotting,Blot, Southern,Southern Blot
D015334 Gene Rearrangement, gamma-Chain T-Cell Antigen Receptor Ordered rearrangement of T-cell variable gene regions coding for the gamma-chain of antigen receptors. T-Cell Antigen Receptor gamma-Chain Gene Rearrangement,T-Lymphocyte Antigen Receptor gamma-Chain Gene Rearrangement,Gene Rearrangement, gamma-Chain T Cell Antigen Receptor,T Cell gamma-Chain Gene Rearrangement,T Lymphocyte gamma-Chain Gene Rearrangement,Gene Rearrangement, gamma Chain T Cell Antigen Receptor,T Cell Antigen Receptor gamma Chain Gene Rearrangement,T Cell gamma Chain Gene Rearrangement,T Lymphocyte Antigen Receptor gamma Chain Gene Rearrangement,T Lymphocyte gamma Chain Gene Rearrangement
D015451 Leukemia, Lymphocytic, Chronic, B-Cell A chronic leukemia characterized by abnormal B-lymphocytes and often generalized lymphadenopathy. In patients presenting predominately with blood and bone marrow involvement it is called chronic lymphocytic leukemia (CLL); in those predominately with enlarged lymph nodes it is called small lymphocytic lymphoma. These terms represent spectrums of the same disease. B-Cell Leukemia, Chronic,B-Lymphocytic Leukemia, Chronic,Chronic Lymphocytic Leukemia,Leukemia, B-Cell, Chronic,Leukemia, Lymphocytic, Chronic,Lymphocytic Leukemia, Chronic, B-Cell,Lymphoma, Small Lymphocytic,B-Cell Chronic Lymphocytic Leukemia,B-Cell Malignancy, Low-Grade,Diffuse Well-Differentiated Lymphocytic Lymphoma,Disrupted In B-Cell Malignancy,Leukemia, B Cell, Chronic,Leukemia, Chronic Lymphatic,Leukemia, Chronic Lymphocytic,Leukemia, Chronic Lymphocytic, B-Cell,Leukemia, Lymphoblastic, Chronic,Leukemia, Lymphocytic, Chronic, B Cell,Lymphoblastic Leukemia, Chronic,Lymphocytic Leukemia, Chronic,Lymphocytic Leukemia, Chronic, B Cell,Lymphocytic Lymphoma,Lymphocytic Lymphoma, Diffuse, Well Differentiated,Lymphocytic Lymphoma, Diffuse, Well-Differentiated,Lymphocytic Lymphoma, Well Differentiated,Lymphocytic Lymphoma, Well-Differentiated,Lymphoma, Lymphocytic,Lymphoma, Lymphocytic, Diffuse, Well Differentiated,Lymphoma, Lymphocytic, Diffuse, Well-Differentiated,Lymphoma, Lymphocytic, Well Differentiated,Lymphoma, Lymphocytic, Well-Differentiated,Lymphoma, Lymphoplasmacytoid, CLL,Lymphoma, Small Lymphocytic, Plasmacytoid,Lymphoma, Small-Cell,Lymphoplasmacytoid Lymphoma, CLL,Small-Cell Lymphoma,B Cell Chronic Lymphocytic Leukemia,B Cell Leukemia, Chronic,B Cell Malignancy, Low Grade,B Lymphocytic Leukemia, Chronic,B-Cell Leukemias, Chronic,B-Cell Malignancies, Low-Grade,B-Lymphocytic Leukemias, Chronic,CLL Lymphoplasmacytoid Lymphoma,CLL Lymphoplasmacytoid Lymphomas,Chronic B-Cell Leukemia,Chronic B-Cell Leukemias,Chronic B-Lymphocytic Leukemia,Chronic B-Lymphocytic Leukemias,Chronic Lymphatic Leukemia,Chronic Lymphatic Leukemias,Chronic Lymphoblastic Leukemia,Chronic Lymphoblastic Leukemias,Chronic Lymphocytic Leukemias,Diffuse Well Differentiated Lymphocytic Lymphoma,Disrupted In B Cell Malignancy,Leukemia, Chronic B-Cell,Leukemia, Chronic B-Lymphocytic,Leukemias, Chronic B-Cell,Leukemias, Chronic B-Lymphocytic,Leukemias, Chronic Lymphatic,Leukemias, Chronic Lymphoblastic,Low-Grade B-Cell Malignancies,Low-Grade B-Cell Malignancy,Lymphatic Leukemia, Chronic,Lymphatic Leukemias, Chronic,Lymphoblastic Leukemias, Chronic,Lymphocytic Leukemias, Chronic,Lymphocytic Lymphoma, Small,Lymphocytic Lymphomas,Lymphocytic Lymphomas, Small,Lymphocytic Lymphomas, Well-Differentiated,Lymphoma, CLL Lymphoplasmacytoid,Lymphoma, Small Cell,Lymphoma, Well-Differentiated Lymphocytic,Lymphomas, CLL Lymphoplasmacytoid,Lymphomas, Lymphocytic,Lymphomas, Small Lymphocytic,Lymphomas, Small-Cell,Lymphomas, Well-Differentiated Lymphocytic,Lymphoplasmacytoid Lymphomas, CLL,Malignancies, Low-Grade B-Cell,Malignancy, Low-Grade B-Cell,Small Cell Lymphoma,Small Lymphocytic Lymphoma,Small Lymphocytic Lymphomas,Small-Cell Lymphomas,Well-Differentiated Lymphocytic Lymphoma,Well-Differentiated Lymphocytic Lymphomas

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