DOWNSTREAM PROCESSING FEATURED ARTICLES
BioLamina, Stockholm, Sweden and Roche recently announced the signing of a research and development agreement to jointly develop new cell culture systems for various applications, including stem cell research.
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![SNX27-neurons2]( "Unraveling The Molecular Roots Of Down Syndrome")
Unraveling The Molecular Roots Of Down SyndromeWhat is it about the extra chromosome inherited in Down syndrome—chromosome 21—that alters brain and body development? Researchers have new evidence that points to a protein called sorting nexin 27, or SNX27.
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Virus Engineered To Express Melanin Offers New Possibilities To Diagnose And Treat Solid Tumor Cancers
In a study released today in Proceedings of the National Academy of Sciences (PNAS), entitled "Vaccinia virus mediated melanin production allows MR and optoacoustic deep tissue imaging and laser induced thermotherapy of cancer," scientists combined the natural imaging potential of melanin with recombinant Vaccinia viruses' ability to selectively enter and replicate within tumor cells.
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Article: How To Choose An Industrial Cation Exchanger For IgG Purification
Cation-exchange chromatography is the third most used industrial method for antibody purification after anion-exchange and protein A affinity chromatography. It is most commonly used as an intermediate step but continues to attract attention as a capture method. By Pete Gagnon
DOWNSTREAM PROCESSING WHITE PAPERS & CASE STUDIES
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![ANAKTAstart]( "Automating Protein Purification Processes Achieves Reliable Results And Reproducibility")
Automating Protein Purification Processes Achieves Reliable Results And ReproducibilityÄKTA start is an easy-to-use, reliable protein purification system. In this application note it is described how Erica, a post-doctoral researcher, used ÄKTA start to purify GST-tagged protein using a predefined method template, a GSTrap FF column, and a Frac30 fraction collector.
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Managing Cell-Based Potency Assays: From Development To Lifecycle Maintenance
Characterization of a biological product — which includes the determination of physicochemical properties, biological activity, immunochemical properties, purity and impurities — is necessary to establish the safety and efficacy profile of a given product (ICH Q6B). By Dr. Weihong Wang, manager, Molecular and Cell Biology, Eurofins Lancaster Laboratories
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Top 10 Considerations When Selecting An Isolator Supplier
While price is certainly an important reason for buying any piece of capital equipment, it is not always the top reason. There are important considerations to examine when selecting an isolator supplier.
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Protein A Alternatives: Mixed Mode Resins For High Throughput mAb Feedstocks
Mixed mode resins can serve as an alternative to protein A in intermediate processing. Implementation of mixed mode resins can reduce water required for filtration and time for column loading.
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Chromatography Column Protection With 3M Purification LifeASSURE™ PLA Series Membrane Filters Protective, or guard, filters are often used in chromatography column purification steps to protect the column media from contaminants in the various fluids that come in contact with the column.
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![CrystalStructure]( "How CHT Ceramic Hydroxyapatite Works Application Note")
How CHT Ceramic Hydroxyapatite Works Application NoteCHT ceramic hydroxyapatite is a versatile chromatography support used for separation of biological molecules as diverse as polyclonal and monoclonal antibodies, antibody fragments, enzymes, nucleic acids, and membrane proteins. By Paul Ng, Jie He, and Andrew Cohen, Bio-Rad Laboratories, Inc., Hercules, CA 94547
DOWNSTREAM PROCESSING MULTIMEDIA
Bioprocess With The Bozenhardts is back, with a fresh episode packed with advice from Herman and Erich on the selection of filling systems for biopharmas. Listen in as the Bozenhardts give us an update on the process, logistics, and administration trends that are informing filling system decisions today, and offer direction on making choices that will prepare you for the fast-advancing therapies of tomorrow.
Bio-Rad now offers two very high capacity ion exchangers: Nuvia S, which can be used for capture and/or intermediate polishing; and Nuvia Q, which can be used for intermediate and/or final polishing.