Automated system suitability test with intelligent run control for peptide mapping QC assays

Importance of the Topic

The use of automated system suitability testing with intelligent run control in peptide mapping quality control is vital for the biopharmaceutical industry. Peptide mapping serves as a fingerprint for protein identity and characterization of post translational modifications. Ensuring chromatographic reproducibility and system performance prior to analysis of valuable therapeutic proteins underpins data integrity, regulatory compliance, and patient safety.

Objectives and Study Overview

This application note demonstrates how the compliance ready automated system suitability test (SST) and intelligent run control (IRC) functions within Thermo Scientific Chromeleon chromatography data system can streamline peptide mapping assays. The study aims to show increased productivity, consistent data quality, and reduced manual intervention in routine QC operations.

Methodology and Instrumentation

The peptide mapping workflow integrates automated SST and IRC in Chromeleon CDS as follows:

• Sample preparation: protein digests of BSA, cytochrome C, lysozyme and monoclonal antibodies were generated using magnetic SMART Digest Trypsin kits.
• Chromatography: reversed phase separation on a Thermo Scientific Acclaim UHPLC column with a 2–40% acetonitrile gradient in 40 minutes at 0.3 mL per minute flow rate, detection at 214 nm.
• Instrumentation: Vanquish Duo UHPLC system for dual LC, consisting of independent pumps, samplers, column compartments and variable wavelength detectors, controlled by Chromeleon 7.2.10 CDS.
• Automated SST and IRC setup within the processing method, defining test cases such as resolution, peak area RSD, tailing factor and peak height, with predefined pass/fail criteria and automated actions (pause, abort, reinjection).

Main Results and Discussion

Key findings include:

• Automated peak integration using Cobra algorithm and SmartPeaks assistant delivers unbiased and consistent results.
• SST tests are automatically evaluated, with clear pass/fail outcomes displayed in reports, preventing analysis on unsuitable systems.
• IRC actions enable the system to respond dynamically to SST failures, such as pausing or reinjecting standards, minimizing sample waste.
• The dual LC capability allows simultaneous analysis of two sequences under identical conditions, doubling throughput while applying the same SST and processing methods.
• SST parameters can be extended to peptide mapping of monoclonal antibodies, distinguishing correct from incorrect samples in QC batch comparison.

Benefits and Practical Applications

Automating SST and IRC in peptide mapping QC offers:

• Enhanced data quality through consistent, software driven integration and decision making.
• Regulatory compliance with 21 CFR part 11, full audit trail and electronic signatures.
• Reduced analyst workload and supervision, saving time and resources.
• Scalable workflows from development to routine release testing in biopharmaceutical laboratories.

Future Trends and Applications

Potential developments include:

• Integration of machine learning algorithms for more advanced peak detection and anomaly prediction.
• Expansion of automated SST and IRC to additional QC assays such as impurity profiling and stability studies.
• Seamless interfacing with laboratory information management systems for end to end data management.
• Broader implementation in multiomics workflows and high throughput screening environments.

Conclusion

The automated system suitability testing and intelligent run control features in Chromeleon CDS deliver reliable, compliant, and efficient peptide mapping workflows for the biopharmaceutical industry. By reducing manual steps and enabling dynamic run control, laboratories can achieve higher productivity, improved data integrity and ensure system readiness for analysis of critical therapeutic proteins.

References

1. United States Pharmacopeia Chapter 1055 Biotechnology–Derived Articles: Peptide Mapping.
2. International Conference on Harmonisation Validation of Analytical Procedures Q2(R1).
3. Allen D et al. Validation of Peptide Mapping for Protein Identity and Genetic Stability. Biologicals. 1996;24:255–275.
4. Center for Drug Evaluation and Research Reviewer Guidance Validation of Chromatographic Methods.
5. Zipfell P, Tontala F. Thermo Scientific Technical Note 72823: Automated system suitability testing and intelligent run control. 2018.
6. Zipfell P, Barrington-Light D. Thermo Scientific Technical Note 70698: Intelligent Integration using Cobra and SmartPeaks. 2013.
7. Thermo Fisher Scientific Chromeleon 7.2.10 CDS Software Documentation.