DOWNSTREAM PROCESSING FEATURED ARTICLES
New Pure-Fit® TCL accommodates large diameter and thick wall tubing applications. Saint-Gobain Performance Plastics has expanded its line of innovative tube clamps with the introduction of the new Pure-Fit® TCL large tube clamp.
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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
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Whitehead Scientists Identify Major Flaw In Standard Approach To Global Gene Expression Analysis
Whitehead Institute researchers report that common assumptions employed in the generation and interpretation of data from global gene expression analyses can lead to seriously flawed conclusions about gene activity and cell behavior in a wide range of current biological research. By Nicole Giese Rura
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New Injectable Gels Toughen Up After Entering The Body
Gels that can be injected into the body, carrying drugs or cells that regenerate damaged tissue, hold promise for treating many types of disease, including cancer. However, these injectable gels don’t always maintain their solid structure once inside the body. By Anne Trafton
DOWNSTREAM PROCESSING WHITE PAPERS & CASE STUDIES
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Monoclonal Antibody Purification Platform Using High-Capacity Protein A And Mixed-Mode Chromatography
The first step in purification of an important class of therapeutic proteins, the polyclonal or monoclonal antibodies (mAbs), is their capture from plasma or tissue culture supernatants. Protein A–based media are by far the most common class of affinity products used for this purpose.
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Optimized Purity And Recovery Of A Monoclonal Antibody Using Mixed-Mode Chromatography Media
Monoclonal antibodies (mAbs) remain a predominant class of therapeutic protein products on the market because of their wide range of applications in disease treatment and diagnosis. Over the years, upstream technology advancements have helped improve the titer of target antibodies, from merely 1 g/L two decades ago to 10–13 g/L in fed-batch processes and up to 25 g/L in perfusion cultures today (Gronemeyer et al. 2014).
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Guidelines For Proper Filtration And Delivery Of Samples To On-Line Process Analyzers
Increasingly precise process control strategies, often linked to computer control, have accelerated the use of sophisticated on-line chemical composition analyzers in plant applications. Instruments such as gas and liquid chromatographs, ion chromatographs, laser optic instruments, atomic absorption instruments and specific ion analyzers, which were rarities in laboratories ten years ago, are now found routinely in plant settings. By Ken Perrotta, Division Engineering Manager
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Selecting The Optimal Resins For The Process Purification Of Native And Recombinant Proteins
Native and recombinant proteins are used in a variety of applications ranging from drug discovery to target validation to high-throughput screening. Due to this, large-scale protein production and purification have become major necessities in industrial settings.
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Comparing The Automated Pipetting To Volumetric Glassware And Air Displacement Pipettes
Analytical sample preparation is used in many industries such as forensics, environmental chemistry, mining, beer and wine fermentation and many others. Concentrated samples are diluted and analyzed via High Performance Liquid Chromatography, Gas Chromatography, Atomic Absorption, and/or Inductively Coupled Plasma Spectroscopy to name a few. Traditionally these samples are prepared using volumetric glassware, syringes and/or pipettes.
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Microbial Fermentation In Single-Use Xcellerex™ XDR-50 MO Fermentor System
This application note describes the performance of a single-use Xcellerex XDR-50 bioreactor system when used in cultivations of E. coli and of modified Pseudomonas fluorecsens (P. fluorescens) producing a monoclonal antibody (MAb). Both the achieved microbe densities and product yield were shown to be consistent with the performance of conventional stainless steel systems.