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Analytical Method Development & Validation for Therapeutic Proteins. Jichao (Jay) Kang, Ph.D., RAC Director, Analytical and Formulation Development Gallus Biopharmaceuticals NJ, LLC. Course Objectives. Basic scientific and industrial knowledge of working on proteins (including antibodies)
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Analytical Method Development & Validation for Therapeutic Proteins Jichao (Jay) Kang, Ph.D., RAC Director, Analytical and Formulation Development Gallus Biopharmaceuticals NJ, LLC
Course Objectives • Basic scientific and industrial knowledge of working on proteins (including antibodies) • Get familiar with commonly used analytical methods: purpose, advantages, limits, pitfalls • Get familiar with Protein Characterization • Get familiar with method validation and method transfer: principle, common practice, and potential problems
Major N-linked Glycans • Classified depending on the extent of processing: • High mannose: lack Gal or GlcNAc at the end of antennae • Complex: GlcNAc after the Man at the antennae • Hybrid: have both Man and Gal/GlcNac at end of the antennae • Hybrid and Complex types can have two or more branches, termed Bi-antennary, tri-antennary, or Tetra-antennary
SEC-HPLC-MALS • Three detector monitoring
Protein Structure Elucidation by MS/MS Roepstorff Nomenclature Scheme
Secondary Structure by CD T Estey, J kang et al., Pharm Sci , 2006, 95: 1626–1639
Timing for Method Qualification/Validation Qualification Validation Verification Method Development and Qualification Measurement defined Scientifically Defendable Ready for validation Fully Validated Method Transfer Methods related to product safety require qualification even at phase I Other methods need to be validated prior to BLA, but by phase III, you should have the methods that can be validated
Case Study: Binding Assay Qualification Binding ELISA curves at different level
Quiz # 15 • For an identification method, what are the validation parameters? • How to determine if a method is stability-indicating? • How to determine LOQ? • How to calculate method supported specification (SS)? • List three considerations in setting SST • List three method transfer pitfalls