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2004 SEP 1 - (NewsRx.com & NewsRx.net) -- Human monoclonal antibodies produced in transgenic BABK kappa,lambda mice recognize idiotypic immunoglobulins of human lymphoma cells.
According to a study from Spain, "Clonal idiotypic immunoglobulins of follicular lymphomas can be isolated by somatic fusion procedures. Idiotypic IgMs (Id-IgM) were isolated from two patients and used to immunize a strain of mice, deficient in mouse antibody production and engineered with yeast artificial chromosomes (YAC) containing fragments of the human immunoglobulin (Ig) mu/delta heavy chain and kappa/lambda light chain loci. Sequence analysis showed that hybridomas prepared from spleen cells of immunized mice expressed exclusively one of the six VH genes (VH1-2) present in the YAC transgene with different D/J rearrangements, and secrete fully human monoclonal antibodies (mAb) that recognized the tumor-specific IgM proteins."
"Further studies of the reactivity of the monoclonal anti-human Id-IgM antibodies revealed that they are specific for the individual protein of each patient and probably react with idiotypic determinants," said Eduardo Suarez and colleagues at the Hospital Clinica Puerta de Hierro. "In one case studied, the antibody recognized specifically the ...
Source: HighBeam Research, Monoclonal antibodies recognize idiotypic immunoglobulins of lymphoma...