Analyzed via Size Exclusion Chromatography (SEC-HPLC). Glycan Profile: Monitored to ensure consistent efficacy. 4.2. Identifying and Characterizing Product Variants
Strategy: The scale-up was modeled keeping the volumetric mass transfer coefficient ( kLak sub cap L a ) constant between scales (
The goal of upstream development is to create a robust cell culture process that maximizes yield (titer) while maintaining CQAs. A Mab A Case Study In Bioprocess Development
For subcutaneous delivery, the final drug product must be <2 mL volume. Mab-X is formulated at 150 mg/mL. Stability studies (4 weeks at 40°C) show that adding 0.02% polysorbate-80 prevents agitation-induced aggregation, but excess PS-80 causes visible particles. The optimized formulation is:
The knowledge gained (e.g., the impact of harvest time on fragment levels) was converted into a control strategy. This strategy, approved by regulatory bodies, ensures that the process is robust enough to consistently produce a mAb that meets all safety and efficacy criteria. 5. Conclusion: Key Takeaways from the Case Study Analyzed via Size Exclusion Chromatography (SEC-HPLC)
: It demonstrates how to use systematic risk assessments (like FMEA) to justify process parameters and ranges.
Identifying product attributes (e.g., glycosylation, aggregation, deamidation) that impact clinical performance. Stability studies (4 weeks at 40°C) show that adding 0
Moving from a 2L benchtop bioreactor to a 2,000L production scale is where physics fights biology.
The bioprocess development of A Mab demonstrates the complexity and challenges involved in producing a therapeutic protein. Through a comprehensive development program, a stable and productive cell line, scalable fermentation and purification processes, and a stable formulation were developed. The bioprocess development of A Mab provides a valuable case study for the development of future therapeutic proteins.
Agitation rates at the 2,000 L scale were restricted to a maximum tip speed of 1.5 m/s to prevent shear damage.
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