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What is your Method for Separating Challenging Polar Molecules?

From small ions like phosphate, herbicide degradation to metabolites, oligosaccharides, peptides, and proteins. How is your lab analyzing polar molecules? The reason I ask is there is a saying, if you have a charged or polar molecule, look to capillary electrophoresis (CE) first. While liquid chromatography (LC) is an ideal front-end separation tool for many types of molecules, as the following poster points out, “From Small to Very Large, Orthogonal, Sensitive Polar Molecule Analysis by CESI-MS,” there are some situations that call for CE over LC analysis. For those of you that are not familiar with CESI-MS, it is the combining of CE separation with electrospray ionization, into one dynamic process, within the same device.

The Power Behind LC-MS for Quantifying mAb Therapeutics

Quantitation of monoclonal antibodies (mAbs) in biological fluids is important during all stages of antibody drug development. First developed in the 1970s, therapeutic mAbs have both research and medicinal impact as they can be used for diagnosis and treatment of a wide variety of diseases, and have a high level of specificity.

Volumetric Absorptive Microsampling and the SCIEX 6500+: A Pre-Clinical Case Study for the Biotherapeutic Exenatide

In an effort to Replace, Refine, and Reduce the number of animals used for pre-clinical research, several microsampling strategies have been implemented which allow for the consolidation of satellite TK and main study groups. In addition to the ethical gains driven by these 3Rs, microsampling has the potential of increasing scientific value since it becomes feasible to directly correlate exposure, toxicological effects and pharmacological response in the same individual

The whys behind the dos and don’ts of oligonucleotide analysis

The whys behind the dos and don’ts of oligonucleotide analysis

We know that LC-MS oligonucleotide analysis can have its share of challenges—challenges with sensitivity, challenges with adduct formation and challenges with data analysis, to name just a few. That’s why this blog takes a closer look at the dos and don’ts of this type of analysis and explores some keys to success. It also explains why following these simple rules can vastly improve your oligonucleotide characterization and quantitation efficiency and success.

Full, partial and empty capsid ratios for AAV analysis: What’s the big deal?

Full, partial and empty capsid ratios for AAV analysis: What’s the big deal?

For many of you working to develop gene therapy drugs, you know that the time to market the drug is critical. Because gene therapeutics cure diseases by targeting specific genes, it is a constant race to see who develops the drug first. Unlike other classes of drugs where multiple medications can be used to treat a disease, whoever is first to develop a gene therapy drug wins.

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