Abstract
Bifunctional antibodies with specificity for the TCR/CD3 complex as well as to a target cell-surface Ag can redirect CTL to lyse the target cell. We have produced a hybrid hybridoma, HHA6, which secretes bifunctional antibodies capable of redirecting CTL to lyse influenza virus-infected target cells. When added along with CTL to virus-infected cells, these antibodies very efficiently inhibit multicycle virus replication. Because hybrid hybridomas reassort H and L chains randomly we attempted to purify bifunctional antibody by using HPLC. The purification increased the potency of HHA6. This increase probably reflects an enrichment of the active species and the removal of inhibiting antibody species.
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