Malvern Panalytical Expert Light Scattering Zetasizer Advance range The world’s most widely-used systems for nanoparticle, colloid and biomolecular particle sizing and particle charge measurements
Physiological processes are regulated by molecular mechanisms involving protein-protein and protein receptor-ligand interactions. With the era of evolving biologics such as monoclonal antibodies or biosimilars, biophysical characterization has gained an important role in the development of protein therapeutics. The main analytical methods of biophysical characterization are used to measure binding affinity and kinetics, binding thermodynamics, aggregation and sizing, stability and higher order conformations.
DKSH’s Center of Excellence hosts the most comprehensive selection of biophysical characterization tools in the ASEAN region. For all stages of drug discovery and development, biophysical characterization plays a vital role in determining the safety and efficacy of candidates. Additionally, our tools allow us to generate stable drug substances and stable environments, two critical steps from early in the discovery phase to fill and finish. We offer an extensive portfolio of tools such as SPR, ITC, switchSENSE, QCM-D, DLS, Flowcam, SEC-MALS, DSC, NTA and NanoFCM.
MMS is a novel technology for label-free biomolecule analysis of protein aggregation, quantitation, stability, structure and similarity that directly addresses the limitations of current technologies. MMS provides drift-free, background subtracted, high sensitivity measurements of the protein secondary structure to facilitate major improvement in development of biopharmaceuticals.
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SPR binding studies are used in screening and development studies and can run in various formats for full characterization of biomolecular interactions. High-throughput screening methods can accelerate the lead selection and optimization process from months to weeks.
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ITC is the gold-standard for binding affinity, stoichiometry and thermodynamics measurements. The addition of stoichiometry and thermodynamics have been proven to be necessary in understanding edge-cases in binding data. For example, candidates with similar affinities and kinetics have been known to act differently due to their binding thermodynamics.
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The switchSENSE by Dynamic Biosensors is a cutting-edge biomolecular interactions system that uses nucleic-acid nano-cantilevers to measure the binding affinity and kinetics, thermodynamics, and conformational changes all in one measurement. This system is a breakthrough for DNA-binding proteins which may be hard to measure with other ligand-binding assays.
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QCM-D provides valuable interactions data on biomolecules and surfaces. This tool has uses in characterizing the stability of therapeutic agents in its container surfaces, the interaction between protein and its excipients, and in bio-membranes research.
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DLS is a popular technique for the characterization of particle size and zeta potential. These key parameters can measure the stability of biomolecules over a period of time as a function of particle size and give insight to the self-aggregation of proteins.
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Flow Imaging Microscopy is an orthogonal imaging technique for the characterization of particle size and aggregation. Specifically designed to generate high-resolution images for particles suspended in fluids, Flowcam enables direct evaluation of the quality and safety of parenteral formulations.
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SEC-MALS is a separation and detection method of proteins based on size to determine the molar mass of the proteins. This powerful tool allows for the characterization of molecular properties such as molecular weight and can be additionally used for orthogonal aggregation and higher order structure studies.
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DSC is a highly sensitive biophysical tool used to detect changes in temperature and heat capacity change associated with folding and unfolding of proteins. With the DSC, you can understand the thermodynamic reasons for aggregation and stability and is a strong tool for detecting small batch-to-batch changes, allowing for comparability and consistency and establishing biosimilarity.
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NTA is the premier imaging technique for the characterization and analysis of exosomes. The technique can monitor individual particles by measuring the Brownian motion of particles in diffusion, which relates to the particle size. Exosomes play a crucial and developing role as both drugs and drug delivery vehicles.
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NanoFCM is the only flow cytometry tool capable of measuring down to the smallest exosome levels (30-1000nm). The ability to generate meaningful biochemical data through flow cytometry makes NanoFCM a great orthogonal tool to the NTA.
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Binding affinity and kinetics tell you how strongly two biomolecules interact with each other and the kinetic rates of association and dissociation. Also called biomolecular interactions, affinity and kinetics data build the backbone of protein therapeutics drug discovery by providing information on the interactions between protein to drug and protein to protein. The determination of KD and Kon Koff values are required for IND/CMC programs.
Protein aggregation is the self-association of proteins and commonly tested for in biomedical studies and development of biologics. Aggregation of proteins are the causes of several well-known diseases such as Alzheimer’s disease and aggregation in drugs can lead to a loss in efficacy. Therefore, protein aggregates are characterized based on their size, kinetics, conformation, chemical modification, and morphology in order to optimize and minimize their ability to aggregate.
Biopharmaceutical stability studies are essential to assess and monitor the pathways to loss in biologic activity, safety or quality. Common factors impacting stability can be aggregation, degradation of proteins, conformational changes, biological activity, impurities, and the degradation of excipients. By understanding the degradation pathways, CPPs and CMAs can be better assessed and controlled. It is critical that all parts of the formulation and their interactions are well-characterized using standardized analytical methods.
Exosomes (extracellular vesicles) are a key recent development in the biomedical and biopharmaceutical industry. Involved in a wide range of healthy and pathogenic processes—cancer, inflammation, immunity, CNS function, cardiac cell function, to name a few—exosomes are being studied for their role in these basic biological processes as well as for their use as biomarkers and even as tools for targeted delivery of biomolecules such as protein therapeutics.
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