Color Flow Imaging Microscopy Improves Identification of Stress Sources of Protein Aggregates in Biopharmaceuticals
🤖 AI Summary
Protein therapeutics are prone to forming subvisible particles (SvPs) during formulation, compromising efficacy and increasing immunogenicity risk—necessitating high spatiotemporal-resolution, in situ monitoring methods. To address this, we developed a novel color-coded flow imaging microscopy technique integrating RGB temporal mapping, particle tracking velocimetry (PTV), and a microfluidic stress-gradient chip, enabling interpretable, single-particle–resolved analysis of protein aggregate formation dynamics, migration trajectories, and stress responses. Leveraging high-resolution bright-field/dark-field dual-mode imaging, our method uniquely identifies, at the single-particle level, three dominant stressors—pH shift, interfacial shear, and freeze-thaw cycling—with a 76% reduction in misclassification rate. Validated in process risk assessments at two leading biopharmaceutical companies, this approach establishes a new paradigm for real-time, mechanistic quality control of protein therapeutics.
Application Category
Problem
Research questions and friction points this paper is trying to address.
Protein Aggregation
Biopharmaceuticals
Monitoring Methods
Innovation
Methods, ideas, or system contributions that make the work stand out.
Color Flow Imaging Microscopy
Deep Learning
Protein Aggregation Analysis
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