Protein Stability & Aggregation Analysis Services
In the biopharmaceutical development lifecycle, the physical stability of a protein is a critical factor determining the success or failure of a drug. During production, purification, formulation development, and long-term storage, protein molecules are highly susceptible to environmental stresses (such as temperature fluctuations, pH variations, and agitation). These stresses can lead to unfolding, denaturation, or irreversible aggregation. Protein aggregation not only significantly reduces drug efficacy but can also trigger severe immunogenic responses, posing a threat to patient safety.
Creative Diagnostics is dedicated to providing comprehensive and rigorous protein stability, solubility, and aggregation state evaluation services. Utilizing cutting-edge biophysical characterization technologies, we help you identify and mitigate potential risks early in formulation development and storage. This ensures your protein molecules maintain exceptional structural and functional integrity under various demanding conditions.
Our Services
To comprehensively track the behavior of proteins in solution, we have established an orthogonal matrix of characterization technologies. Through multidimensional cross-validation, we provide the most reliable profile of your molecule's state:
- Dynamic Light Scattering (DLS) Analysis: As a "gold standard" for detecting the state of macromolecules in solution, DLS enables rapid, non-destructive measurement of a protein's hydrodynamic radius (size distribution) and polydispersity. We utilize this highly sensitive technology to capture the formation of early, minute aggregates, ensuring your proteins remain highly soluble and homogeneous in formulation.
- SEC-MALS (Size Exclusion Chromatography with Multi-Angle Light Scattering): Breaking free from the limitations of traditional chromatography that relies on standard curves, SEC-MALS directly measures the absolute molecular weight and oligomeric state (e.g., the ratio of monomers, dimers, and multimers) of proteins in solution. We accurately verify the spatial structure, assembly state, and monomeric purity of your target molecules, delivering indisputable molecular weight data.
- Accelerated Stability & Thermal Shift Assays (TSA): By simulating extreme environments or applying thermal stress, we track protein conformational changes and degradation kinetics in real time. By precisely determining the melting temperature (Tm) and aggregation temperature (Tagg), we help you predict the long-term shelf life of your molecules and ensure their thermodynamic stability across various formulation conditions.
- High-Throughput Solubility Profiling (Visual & DLS combined): Absolute protein solubility is a core metric dictating administration routes (such as high-concentration subcutaneous injections). We evaluate the physical behavior of target proteins across different buffer systems, pH gradients, and excipient combinations, helping you pinpoint the optimal solubility window and formulation conditions.
Our Advantages
Our core advantage lies in providing a seamless characterization platform that bridges the gap between early developability discovery and late-stage Quality Control (QC). Utilizing advanced micro-volume detection technologies, we require only microliters of scarce samples to conduct tests directly in their native, label-free formulation environments. By employing orthogonal strategies—integrating multiple foundational technologies like light scattering and thermodynamic analysis for rigorous cross-validation—we effectively eliminate the blind spots inherent in single detection methods. This approach guarantees highly robust, compliant data that truly reflects the clinical performance potential of your drug.
Workflow
We dive deep into your project background, clarify protein characteristics, and identify current challenges (e.g., high precipitation risk, high viscosity at elevated concentrations) to tailor a custom characterization plan.
We screen for the optimal column systems, mobile phases, and instrumental parameters for your specific molecule, ensuring high reproducibility and signal-to-noise ratios.
In strict accordance with SOPs, we synchronously execute SEC-MALS, DLS, and thermodynamic stability tests across multiple precision instruments to capture a panoramic data set.
We deliver a detailed scientific report featuring absolute molecular weight distribution charts, thermal stability curves, quantitative tables of aggregate proportions, and expert formulation optimization recommendations.
In the fiercely competitive biopharmaceutical arena, gaining early insights into and resolving protein stability issues is critical for ensuring smooth project advancement and mitigating costly late-stage risks. We look forward to becoming your reliable R&D partner—using data to drive decisions and safeguarding your innovative molecules. Contact our technical experts today to initiate your customized project assessment, and let's work together to accelerate the successful launch of your next-generation biologics!
