Abstract
The expanding use of monoclonal antibodies in the biopharmaceuticals industry has brought the need for new analytical tools. We have developed a coupled affinity and gel-filtration high-performance liquid chromatography method to simultaneously analyze titer and quality of monoclonal antibodies. Before this assay, available analytical methods for protein aggregation required highly purified proteins. This assay can qualitatively describe a protein from a clarified cell culture solution by trending protein aggregation over time while measuring protein titer. It can be used to assess proteins in both early- and late-stage culture due to its dynamic range and sensitivity. This assay is a sensitive technique that overcomes the time limitations of previous approaches. It provides an essential tool to accomplish process optimization.
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