We have completed our mAb Initiative and just published the characterization of monoclonal antibodies by top-down and middle-down approaches. A panel of three mAbs was provided to 20 laboratories worldwide for the analysis: Sigma mAb standard (SiLuLite), NIST mAb standard, and the therapeutic mAb Herceptin (trastuzumab). Various MS instrument platforms and ion dissociation techniques were employed. The present study confirms that TD/MD MS tools are available in laboratories worldwide and provide complementary information to the BU approach that can be crucial for comprehensive mAb characterization.
You can go here and read the paper or just click the image below.