Production of target-specific recombinant human polyclonal antibodies in mammalian cells.

We describe the expression and consistent production of a first target-specific recombinant human polyclonal antibody. An anti-Rhesus D recombinant polyclonal antibody, Sym001, comprised of 25 unique human IgG1 antibodies, was produced by the novel Sympress expression technology. This strategy is based on site-specific integration of antibody genes in CHO cells, using the FRT/Flp-In recombinase system.

Isolation of human antibody repertoires with preservation of the natural heavy and light chain pairing.

The humoral immune system in higher vertebrates is unique in its ability to generate highly diverse antibody responses against most pathogens as well as against certain malignancies. Several technologies have been developed to exploit this vast source of potentially therapeutic antibodies, including hybridoma technology, phage display and yeast display. Here, we present a novel, high-throughput technology (the Symplex Technology) for rapid direct cloning and identification of human antigen-specific high-affinity antibodies from single antibody-producing cells of immune individuals.