Immunoglobulin VH and VK genes of the BALB/c anti-foot-and-mouth disease virus (01) VP1 response: Cloning, characterization and transgenic mice
1991
Abstract Hybridomas producing monoclonal antibodies of different isotypes were isolated from BALB/c antibody responses to the capsid protein VP1 of the foot-and-mouth disease virus (FMDV) strain O1. According to antigen binding measured by ELISA a weak-binding (81D10, IgM) and a strong-binding antibody (1 13C12, IgG2a) were selected. As RNA sequencing of productive immunoglobulin VH and VK genes turned out, both chains of the weak-binding antibody (81D10) are encoded by germline (i.e. not mutated) genes whereas the gene encoding the strong-binding antibody (113C12) k chain is mutated at several sites. Therefore, rearranged VH and VK genes of 81D10 were cloned, expressed in immunoglobulin non-producing plasmacytoma cells, and mice transgenic for the 81D10 k gene were produced. These mice provide a first step in the development of a transgenic mouse model for genetical investigations in the affinity maturation of anti-viral immunoglobulin variable genes.
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