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Automatic Assay Preparation Platform (A2P2) for Real-Time Critical Quality Attributes Monitoring of Cell Culture
Pik K Chan1, Chao-Hsiang Richard Wu1, Yaokai Duan1
1Attribute Sciences, Process Development, Amgen Inc., 1 Amgen Center Drive, Thousand Oaks, California, USA.
Biotechnology Journal
|July 25, 2025
Summary
The Automatic Assay Preparation Platform (A2P2) streamlines biotherapeutic production by automating critical quality attribute (CQA) monitoring. This advanced system enhances efficiency and reduces turnaround time for faster drug development.
Area of Science:
- Biopharmaceutical Manufacturing
- Process Analytical Technology (PAT)
- Biotechnology
Background:
- The biopharmaceutical industry faces intense competition, necessitating faster speed-to-market and "Right First Time" production.
- Current methods for determining critical quality attributes (CQAs) in biotherapeutics involve multiple instruments and significant analyst time.
- Existing analytical workflows for bioprocess monitoring are time-consuming and require extensive laboratory resources.
Purpose of the Study:
- To describe the innovative application of the Automatic Assay Preparation Platform (A2P2) for real-time sample preparation, acquisition, and CQA monitoring in biotherapeutic production.
- To demonstrate how A2P2 streamlines the measurement of titer, product purification, and CQA assays.
- To present A2P2 as an end-to-end automated and autonomous PAT solution.
Main Methods:
- Integration of titer measurement, product purification, concentration measurement, and CQA assay into a single run sequence using a modified ultrahigh performance liquid chromatography (UHPLC) instrument.
- Utilization of Chromeleon's System Suitability Tests (SST) and Intelligence Run Control (IRC) features.
- Leveraging the Agilent injector program for automated sample handling and analysis.
Main Results:
- Significant reduction in analyst hands-on time.
- Substantial shortening of result turnaround time, improving overall efficiency.
- Consolidation of multiple analytical steps onto a single platform, reducing laboratory footprint.
Conclusions:
- The evolved A2P2 system offers an ideal solution for real-time bioprocess monitoring of CQAs.
- This automation accelerates the delivery of safe and effective biotherapeutics.
- A2P2 enhances efficiency and reduces operational complexity in biopharmaceutical manufacturing.

