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Combinatorial Analysis of Host-Leader-Fab Can Greatly Improve Integrated Process Design | Aspen Xchange
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Bioprocess development and optimization is a challenging, costly, and time-consuming effort. In this multidisciplinary task, upstream processing (USP) and downstream processing (DSP) are conventionally considered distinct disciplines. This consideration fosters “one-way” optimization without considering interdependencies between unit operations; thus, the full potential of the process chain cannot be achieved. Therefore, it is necessary to fully integrate USP and DSP process development to provide balanced biotechnological production processes. The aim of the present study was to investigate how different host/leader/antigen binding fragment (Fab) combinations in E. coli expression systems influence USP and primary recovery performance and the final product quality. 
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