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Serologic and molecular characterization of a human monoclonal rheumatoid factor derived from rheumatoid synovial cells. 1990

D L Robbins, and T P Kenny, and M J Coloma, and J V Gavilondo-Cowley, and R W Soto-Gil, and P P Chen, and J W Larrick
Department of Internal Medicine, School of Medicine, University of California, Davis.

Molecular characterization of rheumatoid factors (RF) in rheumatoid arthritis (RA) has been hampered because of their polyclonality. To overcome this problem, we generated monoclonal RF-secreting hybridomas from rheumatoid synovial cells. Among the RF-secreting hybridomas, HAF10 secreted an IgM-RF that was monospecific for human IgG. It bound well to IgG1 and IgG2, but not to IgG3 and IgG4. Sequence analysis of its heavy and light chains showed that it contained a VH1 heavy chain and a V lambda light chain that did not belong to any known lambda light chain subgroup, and therefore, probably represented a new lambda subgroup. These results indicated that both the heavy and light chains of a monoclonal IgM-RF from rheumatoid synovial cells were quite different from the reported variable region sequences of several monoclonal RF derived mainly from patients with mixed cryoglobulinemia. Further studies of additional monoclonal RF from RA patients are warranted to define precisely their genetic basis and to further our understanding of the immunopathology of RA.

UI MeSH Term Description Entries
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
D003001 Cloning, Molecular The insertion of recombinant DNA molecules from prokaryotic and/or eukaryotic sources into a replicating vehicle, such as a plasmid or virus vector, and the introduction of the resultant hybrid molecules into recipient cells without altering the viability of those cells. Molecular Cloning
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D006825 Hybridomas Cells artificially created by fusion of activated lymphocytes with neoplastic cells. The resulting hybrid cells are cloned and produce pure MONOCLONAL ANTIBODIES or T-cell products, identical to those produced by the immunologically competent parent cell. Hybridoma
D000595 Amino Acid Sequence The order of amino acids as they occur in a polypeptide chain. This is referred to as the primary structure of proteins. It is of fundamental importance in determining PROTEIN CONFORMATION. Protein Structure, Primary,Amino Acid Sequences,Sequence, Amino Acid,Sequences, Amino Acid,Primary Protein Structure,Primary Protein Structures,Protein Structures, Primary,Structure, Primary Protein,Structures, Primary Protein
D000937 Antigen-Antibody Reactions The processes triggered by interactions of ANTIBODIES with their ANTIGENS. Antigen Antibody Reactions,Antigen-Antibody Reaction,Reaction, Antigen-Antibody,Reactions, Antigen-Antibody
D001172 Arthritis, Rheumatoid A chronic systemic disease, primarily of the joints, marked by inflammatory changes in the synovial membranes and articular structures, widespread fibrinoid degeneration of the collagen fibers in mesenchymal tissues, and by atrophy and rarefaction of bony structures. Etiology is unknown, but autoimmune mechanisms have been implicated. Rheumatoid Arthritis
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
D012217 Rheumatoid Factor Autoantibodies found in adult RHEUMATOID ARTHRITIS patients that are directed against GAMMA-CHAIN IMMUNOGLOBULINS. Factor, Rheumatoid
D013583 Synovial Membrane The inner membrane of a joint capsule surrounding a freely movable joint. It is loosely attached to the external fibrous capsule and secretes SYNOVIAL FLUID. Synovium,Membrana Synovialis Capsulae Articularis,Membrane, Synovial,Membranes, Synovial,Synovial Membranes

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