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ATF Perfusion: Real-Time Metabolic Control for Cell Production

Bioprocess Online USA
Overview
Integrating real-time glucose and lactate monitoring with automated ATF perfusion can achieve more than three times the viable cell density of fed-batch processes. A TU Wien case study on NK cell production demonstrates that adaptive control of feed and permeate rates maintains high viability within small working volumes.
In Depth

Key Findings

Automated ATF perfusion guided by real-time metabolic control significantly intensifies cell production compared to traditional methods. In a case study involving NK cell production at TU Wien, this approach achieved a viable cell density more than three times higher than that of fed-batch processes while maintaining high viability and utilizing a small working volume.

Technical Details

The system replaces periodic sampling with continuous, real-time measurements of glucose and lactate. These metabolic data points are used to automatically adjust perfusion parameters throughout the expansion phase. Specifically, the current metabolic conditions dictate the feed and permeate rates, allowing the system to respond immediately to metabolic shifts.

Background & Context

Standard batch and fed-batch processes often limit the maximum achievable viable cell density. Furthermore, reliance on periodic sampling creates a time lag that may prevent operators from detecting metabolic shifts quickly enough to implement meaningful interventions. The integration of real-time monitoring with ATF perfusion addresses these limitations by creating a more responsive and adaptive culture environment.

Significance & Outlook

The ability to compare batch, fed-batch, and controlled perfusion performance side-by-side highlights the advantages of adaptive cell culture control. By utilizing real-time metabolic monitoring to guide automated hardware, producers can intensify processes and optimize cell density without sacrificing viability.

Source: https://www.bioprocessonline.com/doc/intensifying-cell-production-processes-through-real-time-metabolic-control-of-automated-atf-perfusion-0001

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