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Multi-Scale Kinetics Modeling for Cell Culture Process with Metabolic State Transition

To advance the understanding of cellular metabolisms and control batch-to-batch variations in cell culture processes, a multi-scale mechanistic model with a bottom-up and top-down structure was developed to simulate the dynamics of cell culture process undergoing metabolic state transitions. This model integrates interactions at the molecular, cellular, and macro-kinetic levels, accounting for inherent variations in metabolic state transitions of individual cells. By incorporating both online (e.g., oxygen uptake, pH) and offline measurements (e.g., viable cell density, metabolite concentrations), the proposed mechanistic model enables accurate long-term prediction of cell culture trajectories and provides reliable prediction intervals quantifying batch-to-batch variations. This work can guide optimal design of experiments and robust process control to improve yield and production stability. Additionally, the proposed multi-scale model has a modular design enables flexible in silico simulations and extrapolation across diverse conditions, providing a robust prediction framework for scalable and flexible biomanufacturing applications.

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