Downstream Processing

Design and Manufacture of cGMP, Scalable Expanded Bed Adsorption Chromatography Columns

Expanded Bed Adsorption chromatography (EBA) allows clarification and direct product capture in one unit operation. Upflow conditions achieve a fluidized bed, twice the volume of the settled bed. Crude, high cell density and highly-viscous feed streams such as cell culture, foods and plasma are injected upflow. Cells, cell debris, host cell proteins (HCP’s) and DNA leave the expanded bed, whilst the target molecule is bound to the media. In order to facilitate a renaissance in EBA, columns built to current…

Polishing of Monoclonal Antibodies Using a Polymer Grafted Cation Exchanger

A typical monoclonal antibody purification process begins with a protein A capture step, followed by one or two polishing steps often using ion exchange chromatography media. This poster presents how to use the new cation exchange chromatography medium, Capto™ S ImpAct in MAb polishing. Capto S ImpAct is based on a newly developed grafting technology (Figure 1), resulting in high binding capacity and high resolution. To find the optimal conditions for static binding capacity of a MAb a screening was…

Novel Protein A Chromatography for Single-Use Facilities

Single-use technology has become increasingly popular in both upstream and downstream biopharmaceutical manufacturing. While there has been substantial adoption of upstream single-use technologies, there continues to be a lag in the development and adoption of single-use technologies in downstream – particularly in chromatography. To help achieve the vision of a completely disposable & flexible manufacturing platform, Grace has developed new high capacity pre-packed disposable protein A columns. The new columns integrate the technologies of Grace silica & surface chemistry with…

Automated Quantification of Residual Protein A ligands with Gyrolab™ Protein A Kit

The Gyrolab™ immunoassay platform is well established for automating bioanalytical assays at nanoliter-scale in discovery, pre-clinical, clinical and bioprocess environments. In this presentation, we will show a new kit developed by Gyros using proprietary reagents and technology for the quantification of residual Protein A in bioprocess samples typically from downstream purification. The kit is comprised of labeled anti-Protein A antibodies, buffers for acid dissociation of IgG from Protein A and a Gyrolab mixing CD that automates the acid dissociation and…

NatriFlo™ HD-Q: A High Performance Disposable Polishing Tool For MAb Purification

As biopharmaceutical developers embrace single-use technologies to reduce risk, improve process speed, efficiency and flexibility, they have found few options in downstream unit operations.  With the introduction of Natrix hydrogel technology, developers now find a chromatographic tool that provides the binding capacity of the best modern resins, but with ten times higher flow rates. This study illustrates the NatriFlo HD-Q anion exchange adsorber which provides high productivity polishing for monoclonal antibody for GMP manufacturing, including under high conductivity conditions. This…

Successful Implementation of Automation in Single-Use Bioprocessing

Single-use bioprocessing is now common for the production of biopharmaceuticals. Existing and future biopharmaceuticals are extremely complex molecules that display structural heterogeneity. This heterogeneity must be carefully controlled in order to deliver consistently safe and efficacious product to patients. The FDA’s Guidance for Industry on Process Validation states that the manufacturer should understand the sources of variation be able to detect variation and understand the impact of variation on the process and ultimately the product. This presentation will review sources…

High Throughput Development of Non-Protein A Monoclonal Antibody Purification Process using Mini-Columns and Bio-Layer Interferometry

High throughput (HT) sorbent screening is widely used for developing purification process saving time and sample volume. This study describes the development of a non-protein A purification process for a monoclonal antibody (MAb) expressed in a CHO cell supernatant. For the capture step, 54 process conditions were screened in three days using 200 µL mini-columns packed with five different sorbents. Capacity and yield were evaluated using Bio-Layer Interferometry (BLI) with protein A biosensors and MAb purity, using SEC-HPLC. A 340-fold scale-up of…

Semi-automated, Single-use TFF Systems With an ‘Open Architecture’ Design Maximize Flexibility and Allow Supply Chain Security

Cross flow filtration used in bioprocesses is typically either microfiltration to clarify process streams or ultrafiltration to concentrate and diafilter the biopharmaceutical molecule. Single-use cross flow operations provide a number of advantages over traditional stainless steel systems. These include: • Flexibility during process development • Reduced capital investment • Avoidance of cross contamination and faster product change overs • Elimination of steaming and cleaning utilities Parker domnick hunter’s innovative SciFlex® TFF system utilizes propriety technology allowing the sterile processing of…

Scalable Method for Packing Chromatography Columns

Currently the bio-pharmaceutical industry is heading towards cost cutting, time saving and single use manufacturing approach. This has opened up a whole new market for disposable technologies. Pre-packed disposable chromatography columns are a best fit for preclinical and clinical stage Monoclonal Antibody (mAb) production and vaccine manufacturing processes which require quick turnaround times and aggressive validation respectively. This work describes development of pre-packed and ready to use chromatography columns to meet this need in the industry. A robust packing method…

Next Generation Depth Filters for the Clarification of Flocculated Mammalian Cell Culture

Increasingly high cell density, high product titer cell cultures, containing mammalian cells are placing a larger burden on traditional downstream clarification and purification operations due to higher product and impurity levels. EMD Millipore has addressed these challenges by developing a proprietary single-use technology to improve primary and secondary direct depth filtration of flocculated high cell density mammalian cell cultures. The use of graded depth filters, combined with pre-treatment technologies, have achieved higher primary throughput capacities and lower flushing volumes as…