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Title: Structural analysis and in vivo administration of an anti-idiotypic antibody against mAb 2F5. Author: Gach JS, Quendler H, Strobach S, Katinger H, Kunert R. Journal: Mol Immunol; 2008 Feb; 45(4):1027-34. PubMed ID: 17804071. Abstract: Anti-idiotypic antibody (Ab2) 3H6 is directed against the human monoclonal antibody 2F5, which is one of a few neutralising antibodies against HIV-1. Since the binding epitope of 2F5 is cryptic and no neutralising immune response could be elicited by several potential vaccines comprising this region, Ab2/3H6 represents a potent vaccine candidate for active immunisation. Here we describe the molecular features of Ab2/3H6 after changing the antigen binding specificity by single point mutations in the complementarity-determining region 3 of the Ab2/3H6 heavy chain. The resulting Ab2/3H6 mutants were compared in several experimental settings to the wild type Ab2/3H6 Fab fragment. Moreover, we report about an immunisation study with Ab2/3H6 Fab variants, which elicited a specific 2F5-like humoral immune response in BALB/c mice.[Abstract] [Full Text] [Related] [New Search]