MAb

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,…

Development, Qualification, and Application of a Bioreactor Scale-Down Process: Modeling Large-Scale Microcarrier Perfusion Cell Culture

Qualified scale-down models of large-scale cell culture processes are essential to conducting studies for applications such as investigating manufacturing deviations, enhancing process understanding, and improving process robustness. For example, scale-down models can be used for raw material investigations as well as evaluation and qualification of new good manufacturing practice (GMP) cell banks for manufacturing implementation. Process characterization studies are performed also with qualified scale-down models to improve process consistency (1, 2). Often it is impractical to conduct investigational studies at…

Ask the Expert: FOLDTEC Refolding of Biopharmaceuticals A Case Study of Recombinant Thrombin

with Dr. Andreas Anton and Dr. Sebastian Schuck Poorly soluble substances form aggregated inclusion bodies (IBs) in microbial cells containing incorrectly and/or incompletely folded target proteins. Wacker Biotech, a full-service contract manufacturer of biopharmaceuticals based on microbial systems, has introduced FOLDTEC refolding technology for bioengineered therapeutic proteins. The proprietary platform uses specifically developed and optimized bacterial strains and a patented, antibiotic-free expression system. In a BPI webinar on 9 November 2015, Wacker’s director of bioprocess development (Andreas Anton) and head…

Decision-Support Tools for Monoclonal Antibody and Cell Therapy Bioprocessing: Current Landscape and Development Opportunities

Industrial-scale manufacturers in a number of fields — from automobiles to biotherapeutics — have long relied on powerful computational and mathematical tools to aid in the scale-up, optimization, quality control, and monitoring of product development (1–5). Typical process pathways are highly multifactorial, with numerous branch points, feedback steps, instrumental attributes, and target parameters. Moreover, margins for error are minimal for most industrial processes, requiring high standards of precision from industrial and operational pathways (6). For those reasons, the complexity of…

Comprehensive Hands-On Training for Biopharmaceutical Manufacturing: BTEC’s Program to Deliver Training to FDA Investigators

Training and continuing education play a vital role in carrying out the US Food and Drug Administration’s mission to protect and promote the public health — not only for consumers, health professionals, and industry, but also for the agency’s own personnel. Since 2008, the Golden LEAF Biomanufacturing Training and Education Center (BTEC) at North Carolina State University has filled a niche in the agency’s internal training program and provided a series of courses to more than 100 FDA investigators. The…

Uniting Small-Molecule and Biologic Drug Perspectives: Analytical Characterization and Regulatory Considerations for Antibody–Drug Conjugates

Cosponsored by CASSS (an international separation science society) and the US Food and Drug Administration (FDA), the January 2010 CMC Strategy Forum explored antibody–drug conjugates (ADCs), which are monoclonal antibodies (MAbs) coupled to cytotoxic agents. The ADC platform of products is being used more and more for clinical evaluation in oncology. More than a dozen companies are developing several types, including products conjugated with calicheamicin, auristatins, and maytansinoids. Such products use the specificity of a MAb to deliver a cytotoxic…

Compatibility Assessment of a Model Monoclonal Antibody Formulation in Glass and Blow–Fill–Seal Plastic Vials

PREPRINT October 2015 issue Blow–fill–seal (BFS) technology has been recognized by the industry as an advanced aseptic solution (1–3). Catalent Pharma Solutions has been commercially supplying sterile BFS products to the pharmaceutical industry for decades, primarily in the respiratory and topical ophthalmic markets. Such product formulations range from simple solutions to emulsions with drug substances from classical small molecules to large complex proteins such as biologics. The company also has optimized BFS processes and its Advasept plastic container system for…

Anion-Exchange Chromatographic Clarification: Bringing Simplification, Robustness, and Savings to MAb Purification

Monoclonal antibodies (MAbs) are the most prominent and successful therapeutic proteins in the pharmaceutical industry. More than 35 MAbs have been approved to treat a range of conditions, and hundreds more are in development (1, 2). Once, the upstream cell culture process was considered the bottleneck to producing high antibody doses required for treatment, but recent advances in cell culture technology have boosted antibody titers to the range of 5–10 g/L (3). That increase in productivity has shifted focus onto…

An Industrial Platform Solution for Antibody Fragment Purification

Compared with traditional approaches such as chemotherapy and radiotherapy, monoclonal antibodies (MAbs) have become the most successful cancer treatments in the past 20 years (1). With great clinical success in many therapeutic areas, MAbs now account for >40% of the entire biotechnology drug market, and sales are projected to be >US$160 billion over the next few years in the United States alone (2). More than 35 MAbs have been approved for clinical use, and hundreds more are filling industry development…