MAb

Performance Qualification of a Single-Use, Stirred-Tank Bioreactor with CHO-S Cell Culture

The increasing role and importance of cell culture in biophamaceutical manufacturing has led to considerable research and development (R&D) into bioreactor design and performance in recent years. As a result, a greater understanding of bioreactor fluid dynamics and critical physical parameters is now essential to maximize cell growth and productivity. Stirred-tank bioreactors are especially important in this development process because of their favorable properties in areas such as mixing efficiency and homogeneity, energy transfer, and scalability. The design and manufacture…

Optimizing Continuous Monoclonal Antibody Polishing By Using Coupled Unit Operations

The biopharmaceutical industry is under a great deal of pressure to modernize manufacturing to meet the challenges of production at vastly different scales for niche drugs as well as for expected massive blockbusters, biosimilars, and regional manufacturing. To address these challenges, the biopharmaceutical industry is embracing process intensification through single-use and continuous processing technologies. Implementing these technologies offers increased productivity and manufacturing flexibility and reduces the footprint, capital outlay, and operating costs. Pall Life Sciences has developed several technologies designed…

Critical Factors for Fill–Finish Manufacturing of Biologics

Over recent decades, protein-based therapeutics have emerged as key drivers of growth in the pharmaceutical industry. Drug development pipelines have filled with biologics, and a handful of monoclonal antibody (MAb) products have become some of the best-selling drugs around the world. Production of biotherapeutics is often challenging because of the inherent instability of these large, complex molecules. Their fragile nature has forced manufacturers to change how bulk drug substances (BDSs) are handled and final drug product is formulated, sterile filtered,…

Special Report on Continuous Bioprocessing: Upstream, Downstream, Ready for Prime Time?

Once an engineering curiosity and smallscale laboratory technique, continuous bioprocessing has evolved in just a few short years to a topic of intense and increasing interest to most bioprocessors. Critics point to a steep learning/adoption curve, but that is nothing new in biomanufacturing.Andrew Zydney is a distinguished professor of chemical engineering at Pennsylvania State University. He has noted these challenges facing continuous processing: commercially unproven unit operations (especially downstream), a lack of equipment robustness, sterility concerns, and uncertain development timelines…

Fucosylation of a Therapeutic Antibody: Effects on Antibody-Dependent, Cell-Mediated Cytotoxicity (ADCC) Potency and Efficacy

Product quality attributes are critical for the functionality and manufacturability of therapeutic antibodies. They can be significantly influenced by a number of production process parameters, such as cell culture media. The composition of growth and feed media can influence antibody glycosylation, including the concentration of ammonia, glutamine, glucose, and metal ions (1, 2). Thus, it is critical during media development and optimization to monitor and consider a culture medium’s impact on glycosylation. For therapeutic antibodies whose mechanism of action includes…

Rapid Formulation Development for Monoclonal Antibodies

Monoclonal antibodies (MAbs) are at the focal point of biologics development. Many of the best-selling drugs are therapeutic MAbs or related proteins (1–2). The combined world-wide sales from MAbs will be nearly US$125 billion by 2020 (3). About 50 MAb products treating a range of diseases have been approved in the United States or Europe. With the large number of MAbs progressing through discovery, biomanufacturers need to accelerate process development and move projects rapidly into clinical manufacturing (4–5). Formulation development,…

A Single-Use Process for Production of Recombinant Human Follicle-Stimulating Hormone

Follicle-stimulating hormone (FSH) is a heterodimeric glycoprotein consisting of noncovalently linked α and β subunits. It stimulates the growth of immature follicles in ovaries and primary spermatocytes in testes and thus plays an important role in human reproduction (1). Human menopausal gonadotropin for infertility treatment was first introduced into clinical practice in 1950 (2, 3). Subsequently, treatments with urinary FSH have been replaced by recombinant human FSH (rh-FSH), which has been shown to provide several advantages such as absence of…

Alkyl Mono- and Diglucosides: Highly Effective, Nonionic Surfactant Replacements for Polysorbates in Biotherapeutics — a Review

Many biotherapeutic proteins are naturally subject to aggregation. The clinical consequences of protein aggregation can be dramatic, not only affecting bioavailability and pharmacokinetics, but in extreme cases dramatically altering pharmacodynamics as well. Of equal or perhaps more importance is that aggregation is a principal source of unwanted immunogenicity in biotherapeutics. Aggregation-induced neutralizing antibodies and/or anaphylactic reactions are serious and growing US and European regulatory concerns. So they will have significant and growing influence on the future development and regulatory approval…

Responding to an FDA Form 483: A Five-Step Approach

When the US Food and Drug Administration (FDA) inspects your company’s biomanufacturing facility, investigators use the FDA Form 483 to record observations and findings (1). Such inspections typically review all good manufacturing practices and good laboratory practices (GxP) quality systems documents. If those investigators find compliance issues, they deliver a summary of their observations and findings using a Form 483, a copy of which will be provided to your company at the end of the inspection visit. How to Respond…

Automated Purification of Native and Recombinant Proteins Using Multidimensional Chromatography

In traditional sequential chromatography, columns are run as separate entities. The process requires significant hands-on time and constant manual intervention. By contrast, automated chromatography technology provides the same results more efficiently and reliably and frees researchers to focus on other tasks, thereby shortening protein purification times from days to hours. For drug discovery, purifying protein samples is required to generate enough materials for research experiments. But the process is complex and time consuming. It involves repeated single-column purifications, careful analysis,…