protein purification

Choosing the right chromatography resin is a complex and critical decision that can significantly impact the success of your downstream purification workflow, whether for preparative or analytical applications. To make an informed choice, you must consider the scientific principles of the process, practical implications for your specific application, and attributes of the manufacturer.

Follow the story of Evitria as it grows from a small Chinese hamster ovary (CHO) cell supernatant supplier to a global therapeutic antibody production company serving clients across the globe. Bio-Rad has partnered with Evitria at every stage of this remarkable journey and looks forward to supporting its continued success.

Modern chromatographic resins enable new strategies for downstream processing of bispecific antibodies. Watch this webinar to see case studies and workflows.

Large molecule purification presents significant challenges due to their considerable size. For instance, Immunoglobulin M (IgM) molecules, ranging from 900 to 1,000 kD, play pivotal roles in mammalian immune responses and find extensive applications in diagnostics and therapeutics. Purification of such molecules is particularly intricate owing to several factors including their weak Protein A binding sites, limited dynamic binding capacity, and slow diffusion rates.

For over 30 years, CHT Ceramic Hydroxyapatite Chromatography Media has been a trusted, proven purification solution for many biopharmaceutical manufacturing processes. CHT Media provides exceptional removal of impurities when other chromatography resins fall short. In this webcast, explore the essential facts and benefits of this chromatography technology.

Endotoxins are common impurities that pose safety risks in therapeutic protein preparations and are difficult to remove. See proven workflows and strategies.

Bispecific antibodies pose unique challenges in downstream processing. See how impurities were efficiently removed by mixed-mode chromatography in this webinar.

The current gold standard in monoclonal antibody purification for most researchers is affinity purification with Protein A or G followed by size exclusion chromatography (SEC). Although robust and highly effective, this workflow does have critical pain points and inefficiencies, leaving researchers to feel that they must oversee every step of their workflow, not leaving their chromatography system unattended for more than a few minutes.

In this case study, process chromatography application scientist Artur Stanczak presents a two-step mAb purification workflow, comparing multimodal resin alternatives used for the polishing step that occurs after protein A capture. The design of experiment (DOE) data presented characterizes the behavior of multiple mAbs with two different mixed-mode resins. The importance of scale, prior knowledge, and the stage of development will also be discussed. The results of both mixed-mode resin studies and the different DOE approaches demonstrate the ability to achieve high-purity products.

Seychelle M. Vos, PhD, has a passion for science that was ignited at a young age while exploring her parents’ garden and the natural world around her. Now she studies some of the biggest questions in genome biology: how DNA structure and chromatin influence protein transcription. The molecular machines that physically couple transcription and DNA structure by changing the position of nucleosomes, interfacing with chromatin, and compressing DNA into loops, are the focus of Vos’ research.