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T cell receptor repertoire of T lymphocytes recovered from the lung and blood of patients with sarcoidosis. 1994

A Bellocq, and D Lecossier, and C Pierre-Audigier, and A Tazi, and D Valeyre, and A J Hance
INSERM U.82, Faculté de Médecine Xavier Bichat, Paris, France.

We evaluated the repertoire of V beta segments used in forming the T-cell receptor of lavage and blood T lymphocytes from 11 sarcoid patients and 10 normal subjects using procedures based on quantitative polymerase chain reaction, permitting analysis of both the abundance of transcripts using each of 20 different V beta families and the diversity of the VDJC beta rearrangements within each V beta family. Blood and lung T cells from sarcoid patients had a very diverse V beta repertoire. For all V beta families but one, the abundance of the V beta transcripts fell within the mean +/- 2 SD of that observed for normal blood lymphocytes; no difference in the overall abundance was observed comparing lavage and blood T cells, and the length of VDJC beta rearrangements for a given V beta family in samples from sarcoid patients was usually quite heterogeneous. Despite the overall polyclonality, evidence for selective expansion of T cells was found, in that an increased abundance of V beta 19 transcripts was observed for sarcoid blood and/or lung T cells in eight out of 11 patients studied, and rearrangements of a single predominant length using certain (e.g., V beta 19, V beta 14), but not all, V beta families were present. Sequencing confirmed the presence of a single predominant VDJC beta rearrangement in these cases. These findings suggest that the alveolitis in sarcoidosis results from two distinct processes, a local clonal expansion of T cells associated with an apparently nonspecific accumulation of T cells with an extremely diverse V beta repertoire.

UI MeSH Term Description Entries
D008297 Male Males
D008969 Molecular Sequence Data Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories. Sequence Data, Molecular,Molecular Sequencing Data,Data, Molecular Sequence,Data, Molecular Sequencing,Sequencing Data, Molecular
D012150 Polymorphism, Restriction Fragment Length Variation occurring within a species in the presence or length of DNA fragment generated by a specific endonuclease at a specific site in the genome. Such variations are generated by mutations that create or abolish recognition sites for these enzymes or change the length of the fragment. RFLP,Restriction Fragment Length Polymorphism,RFLPs,Restriction Fragment Length Polymorphisms
D001992 Bronchoalveolar Lavage Fluid Washing liquid obtained from irrigation of the lung, including the BRONCHI and the PULMONARY ALVEOLI. It is generally used to assess biochemical, inflammatory, or infection status of the lung. Alveolar Lavage Fluid,Bronchial Lavage Fluid,Lung Lavage Fluid,Bronchial Alveolar Lavage Fluid,Lavage Fluid, Bronchial,Lavage Fluid, Lung,Pulmonary Lavage Fluid,Alveolar Lavage Fluids,Bronchial Lavage Fluids,Bronchoalveolar Lavage Fluids,Lavage Fluid, Alveolar,Lavage Fluid, Bronchoalveolar,Lavage Fluid, Pulmonary,Lavage Fluids, Alveolar,Lavage Fluids, Bronchial,Lavage Fluids, Bronchoalveolar,Lavage Fluids, Lung,Lavage Fluids, Pulmonary,Lung Lavage Fluids,Pulmonary Lavage Fluids
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D001483 Base Sequence The sequence of PURINES and PYRIMIDINES in nucleic acids and polynucleotides. It is also called nucleotide sequence. DNA Sequence,Nucleotide Sequence,RNA Sequence,DNA Sequences,Base Sequences,Nucleotide Sequences,RNA Sequences,Sequence, Base,Sequence, DNA,Sequence, Nucleotide,Sequence, RNA,Sequences, Base,Sequences, DNA,Sequences, Nucleotide,Sequences, RNA
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
D015321 Gene Rearrangement The ordered rearrangement of gene regions by DNA recombination such as that which occurs normally during development. DNA Rearrangement,DNA Rearrangements,Gene Rearrangements,Rearrangement, DNA,Rearrangement, Gene,Rearrangements, DNA,Rearrangements, Gene

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