Computational Design of Epitope-Specific Functional Antibodies

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The ultimate goal of protein design is to introduce new biological activity. We propose a computational approach for designing functional antibodies by focusing on functional epitopes, integrating large-scale statistical analysis with multiple structural models. Machine learning is used to analyze these models and predict specific residue-residue contacts. We use this approach to design a functional antibody to counter the proinflammatory effect of the cytokine interleukin-17A (IL-17A). X-ray crystallography confirms that the designed antibody binds the targeted epitope and the interaction is mediated by the designed contacts. Cell-based assays confirm that the antibody is functional. Importantly, this approach does not rely on a high-quality 3D model of the designed complex or even a solved structure of the target. As demonstrated here, this approach can be used to design biologically active antibodies, removing some of the main hurdles in antibody design and in drug discovery. Nimrod et al. present an approach to computational design of epitope-specific antibodies. Using in silico methods targeting a chosen epitope, a functional antibody to IL-17A was engineered. The antibody binds IL-17A at the targeted epitope. A machine learning classifier predicts functionally relevant contacts between antigen and antibody.




Nimrod, G., Fischman, S., Austin, M., Herman, A., Keyes, F., Leiderman, O., … Ofran, Y. (2018). Computational Design of Epitope-Specific Functional Antibodies. Cell Reports, 25(8), 2121-2131.e5.

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