Analytical

Process Development of Microbial Plasmid DNA: Fast-Tracking with Modular Single-Use Minibioreactors

There has been a rapid rise in the number of positive clinical outputs from clinical studies based on gene and cell therapies. This is in addition to the licensing of products such as GlaxoSmithKline’s Strimvelis ex-vivo stem-cell therapy for treatment of severe combined immunodeficiency caused by adenosine deaminase deficiency (ADA-SCID) in 2016 (1) — has led to an increase in demand for therapeutic vector manufacturing capabilities. Viral vectors are being used for an increasing range of conditions, including monogenetic conditions.…

Particulate Contamination in Single-Use Systems: Challenges of Detection, Measurement, and Continuous Improvement

Patients receiving particulate contamination through parenteral delivery of biopharmaceuticals presents a significant potential health risk. However, the severity of that risk often is unclear. It depends on the route of administration, dosage volume administered, particle properties and amount received, and the ultimate fate of particles within a patient’s body (1). The appearance of particulate contamination also can be a visible indicator of product quality. Consequently, when such contamination is discovered within biopharmaceutical manufacturing operations, often it triggers costly investigations and…

Regulation, Analytical, and Process Issues with Leachables: Toward Harmonization for Latin America with Europe and North America

The pharmaceutical industry follows strict regulations regarding impurities, including process-related leachates. Plastic manufacturers use hydrophobic, nontoxic additives for manufacturing containers for use in the pharmaceutical and food industries. However, some issues about dealing with such impurities are not yet resolved. In developing countries, regulators are working on guidelines to help local companies ensure characterization of impurities. In this exclusive editorial eBook, authors from Mexico describe some issues related to plastic leachables in the context of ongoing efforts to harmonize regulations…

BPI Lab: Essential Technologies for Development, Characterization, and QA/QC

There’s a secret hiding in plain sight: many analytical methods and technologies initially designed for pre-clinical development have equally important applications in commercial development. BioProcess International and BioTechniques, sister publications and leading journals that combined, cover the entire biopharmaceutical process, from discovery to development and manufacturing, partnered to create this special eBook, highlighting and detailing fourteen analytical technologies that provide laboratory technicians and scientists with vital information to help project managers and engineers make educated decisions that ultimately affect every…

Opportunities and Challenges in Biosimilar Development

A biosimilar biotherapeutic product is similar (but not identical) in terms of quality, safety, and efficacy to an already licensed reference product. Unlike generic small molecules, it is difficult to standardize such inherently complex products based on complicated manufacturing processes. Table 1 describes the main differences between biosimilar and generic drug molecules. The global biosimilar market is growing rapidly as patents on blockbuster biologic drugs expire (Table 2) and other healthcare sectors focus on reduction of costs. Biologics are among…

Implementing Quality By Design in Analytical Development: A Case Study on the Development of an Anion-Exchange HPLC Method

The concept of quality by design (QbD) initially was outlined in ICH Q8 guidance for drug-product development and later in Q11 for drug-substance development (1, 2). Since then, the QbD concept was further expanded to the development of analytical methods. FDA issued a 2015 guidance on analytical procedures and method validation for drugs and biologics (3). Although the agency did not explicitly state the requirement for implementation of QbD in analytical method development, the concept is embedded in its section…

Special Report: Effect of Insulin on Cell Growth and Virus Production

Recombinant insulin is a key component in serum-free growth media for mammalian cells. It is used for the manufacturing of monoclonal antibodies, virus vaccines, gene therapy products and many other biological drug products approved by regulatory bodies worldwide, including FDA and EMA. Canada’s National Research Council (NRC) helps companies develop and commercialize new health technologies. Recently it partnered with Novo Nordisk Pharmatech to determine the effect of Insulin on cell growth and virus production. The results are detailed in this…

Advancements in Characterizing Therapeutic Protein Higher-Order Structure

Electrospray-ionization mass spectrometry (ESI-MS) is a well-established tool for biotherapeutic analysis. It draws intact proteins or peptide ions into the vacuum of a mass spectrometer, where the ion mass is measured. Electrospray ion-mobility mass spectrometry (ESI-IMS) introduces ions into a low-pressure gas, where the effects of aerodynamic drag reveal their shape. This technique is just emerging as a valuable tool for characterizing intact proteins, even though for a decade it’s been the basis of a commercially available medical diagnostic test…

Aggregation from Shear Stress and Surface Interaction: Molecule-Specific or Universal Phenomenon?

Exposure to solid–liquid and air–water interfaces during production, freezing and thawing, shipment and storage of protein therapeutics may be a contributing factor in their degradation (e.g., aggregation, fragmentation) (1, 2). Surface exposure, particularly during manufacturing processes, often is accompanied by various degrees and durations of shear stresses originating from fluid flow and acting on proteins at interfaces. The magnitude and duration of shear rates depends on velocity gradients within each solution and varies significantly among manufacturing steps. On the low…

Strategies for Successful Sample Transfer

Nadine Ritter is president and senior analytical advisor of Global Biotech Experts, LLC and a long-time member of BioProcess International’s editorial advisory board. At a recent CASSS North American CMC Strategy Forum called “Methods on the Move: Addressing Method Transfer Challenges,” she discussed the biopharmaceutical industry’s logistical challenges of analytical test samples for drug substances and products. At the conference, BPI’s editor in chief Anne Montgomery met with her to discuss some key points of this topic. Logistics Challenges Montgomery:…