Characterization of Monoclonal Antibody (mAb) using Shimadzu Q-TOF LCMS 9030

Significance of the Topic

Monoclonal antibodies are vital in modern biopharmaceuticals due to their specificity and therapeutic potential

Study Objectives and Overview

This work evaluates the NISTmAb reference material using high-resolution quadrupole time-of-flight LCMS to characterize intact mass, subunits, and peptide-level post-translational modifications

Methodology and Instrumentation

The approach combines enzymatic glycan removal and reduction, proteolytic digestion, and mass spectrometric analysis with specialized software

• Instrument: Shimadzu Q-TOF LCMS-9030
• Glycan removal enzyme: RapidTM PNGase F
• Protease: Trypsin
• Data analysis: Protein Metrics software

Main Results and Discussion

Intact mass deconvolution produced precise molecular weights within 20 Da of theoretical values
Subunit spectra revealed light and heavy chain glycoform distributions and identified key modifications
Peptide mapping achieved nearly complete sequence coverage and pinpointed modifications such as deamidation, oxidation, pyro-glutamate formation, and glycan heterogeneity

Benefits and Practical Applications

This workflow delivers a comprehensive critical quality attribute profile for monoclonal antibodies, supporting development, quality control, and regulatory submissions by quantifying protein variants and modifications

Future Trends and Potential Applications

Emerging developments may include higher throughput multi-attribute methods, AI-driven data interpretation, real-time process analytics, and integration into continuous biomanufacturing platforms

Conclusion

The combination of Shimadzu Q-TOF LCMS-9030 and targeted sample preparation enables robust, high-resolution characterization of monoclonal antibodies, ensuring accurate assessment of structural integrity and critical modifications

Reference

1. Monoclonal Antibody (mAb) Intact Mass and Subunit Analysis Using Shimadzu Q-TOF LCMS-9030, 04-AD-0296-EN
2. A Fast and Simple Workflow for Monoclonal Antibody (mAb) Post-Translation Modifications Study Using Shimadzu LCMS-9030 Q-TOF, AD-0295-EN