Development of HPLC analysis methods for therapeutic monoclonal antibodies

Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan
Kenichiro Todoroki

Abstract

Therapeutic monoclonal antibody (mAb) preparations are produced from cultured cells; therefore, detailed and multidimensional analyses of their heterogeneities are required. We analyzed five commercially available mAb preparations by high-temperature reversed-phase LC using a wide-pore core-shell column for pluralistic quality assessment. At a highly elevated column temperature, isopropanol with high eluotropic strength coefficients and a wide-pore core-shell type octyl column showed good peak resolution of the investigated mAbs and their related constituents. We used this method to estimate the residual rate of intact mAbs after a heat aggregation treatment and conducted fragmentation analysis by analyzing their pepsin digests. Each peak component was identified by matrix-assisted laser desorption ionization-time of flight mass spectrometry. All results were compared with those of reversed-phase and size exclusion analyses.

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