Continuous Bioprocessing

eBook: Intensifying Processes for Monoclonal Antibodies

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The commercial manufacturing success of monoclonal antibodies (MAbs) has become a touchstone of the biopharmaceutical industry. MAbs are so well established that they often are referred to as “traditional†biologics, and well-known MAb processing methods have become a model for processing of other “advanced†or “emerging†therapies. But MAb processing continues to advance as biomanufacturers seek ways to improve efficiencies, lower costs, and (most recently) increase sustainability of facilities. Drug makers are particularly interested in strategies for MAb process intensification.…

April 28, 2022

Reducing Downstream Scale-Up Needs: Advances Toward Continuous Downstream Processing

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The biopharmaceutical industry generally acknowledges that upstream and downstream aspects of drug-substance manufacturing are experiencing a capacity mismatch. Today, many recombinant proteins can be produced at expression titers of 3 g/L, with some yields exceeding 10 g/L. Such titers represent 100-fold increases in production capability compared with values from twenty years ago (1, 2). Increases in cell-culture density and improvements to perfusion-mode bioreactor systems hold promise for increasing yields further still. Such developments, combined with the broad availability of concentrated…

March 16, 2022

Practical Considerations for Statistical Analyses in Continued Process Verification

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Several statistical techniques can be used to assist in monitoring biopharmaceutical product quality attributes as part of continued process verification (CPV) activities. These include run charts, control charts, and capability analyses. Below, I provide an overview and recommendations on statistical strategies when developing a CPV program, considering the expected behavior of manufacturing results in the biopharmaceutical industry. Presence of Autocorrelated Data In a previous study, I highlighted the tendency for data to be positively autocorrelated (values are closely related to…

December 17, 2020

The Crossroads of Academia, ​Industry, and Education: Modern Training Centers Are Pivotal to the Future of R&D

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Global pharmaceutical industry research and development (R&D) investment has experienced steady growth over the past two decades, with an anticipated compound annual growth rate (CAGR) of 3.0% and projected 2024 investment of US$213 billion (1). Focused on developing innovative therapies for chronic, infectious, genetic, and lifestyle-related ailments, the fast-growing biologics segment has become a cornerstone of the pharmaceutical industry and healthcare sector. The demonstrated effectiveness and wide-ranging applicability of biopharmaceuticals also have brought considerable R&D in computational and biological technologies.…

October 29, 2020

Run Rules with Autocorrelated Data for Continued Process Verification

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Control charts can be used to assist in monitoring of biopharmaceutical product quality attributes as part of continued process verification activities. A number of tests known as run rules have been developed to assess whether biomanufacturing processes remain in statistical control. In practice, results for such attributes can be positively autocorrelated. Simulated data are used to assess the performance of run rules with autocorrelated data to assist in determining risk–reward profiles for process monitoring. Autocorrelated Data The tendency for data…

October 29, 2020

Developing Process Control Strategies for Continuous Bioprocesses

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Process control enables biomanufacturers to ensure that operating parameters are within defined specifications. A control strategy should be established during early stages of process development while process and product performance are being defined using risk-based methods such as quality by design (QbD) and process analytical technologies (PATs). Confirming process control as an essential part of product development creates greater process knowledge and understanding and provides the first steps toward process optimization. By understanding how process performance relates to product quality,…

May 15, 2020

eBook: Continuous Bioprocessing — Promises and Challenges

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Biotechnological productions are commonly executed as batch processes, especially during downstream processing. Higher titers in fermentations, reductions in operating scale, and the quest for improving product quality all have led to an intensified effort for developing continuous processing. It is forecasted that within the next 10 years, about 50% of all drugs under development will be biopharmaceuticals, making it worthwhile to develop more efficient processes. In this BPI eBook, Babu Halan (project engineer) and Wolfgang Minas (global lead of the…

February 18, 2020

Bioprocess Intensification – Fast, Flexible, and Efficient Solutions

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Propelled by single-use systems (SUSs), biopharmaceutical companies are approaching the ideal of continuous bioprocessing. In addition to improving process integrity and decreasing production costs, SUSs have enabled exciting ways to configure, operate, and evaluate manufacturing steps. Sensitive process analytical technologies (PATs) and discriminating data analysis platforms are supplementing those developments, helping process engineers and operators to study and modify workflows in unprecedented ways. The goal now is to intensify: to apply increasingly nuanced process knowledge and growing technological capability in…

November 21, 2019

Flow Monitoring in Continuous Processing and Single-Use Systems

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Flow sensors placed at critical points in both upstream and downstream processes fulfill the regulatory goals of the process analytical technology (PAT) framework. PAT has been defined as a mechanism for design, analysis, and control of biotechnical and pharmaceutical manufacturing processes through measurement of critical process parameters (CPP). Constant flow monitoring can support its overall targets fundamentally to reduce production cycling time prevent rejection of batches enable real-time release increase automation and control improve energy and material use facilitate continuous…

October 23, 2019

Control of Protein A Column Loading During Continuous Antibody Production: A Technology Overview of Real-Time Titer Measurement Methods

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During production of therapeutic antibodies, harvest titer is measured to monitor product mass loaded onto the protein A capture column. This prevents both column underloading (underusing expensive resin) and overloading (wasting product as flow-through (FT)) while allowing for column yield calculations. Batch production yields a single homogenous harvest pool, thus only one titer measurement (along with volume loaded) is sufficient to determine the mass loaded. During continuous production, however, cell-free harvest (permeate) continuously exits a perfusion reactor and loads a…

September 21, 2019