Demand continues to grow for clinical- and good manufacturing practice (GMP)-grade plasmid DNA (pDNA) amid the proliferation of therapies based on mRNA and viral vectors. At a newly acquired manufacturing facility in San Diego, CA, Wacker Chemie is expanding its capabilities with a scalable platform for pDNA production. In October 2021, Mack Kuo (associate director of bioprocess development at Wacker Biotech US) showcased the site’s capabilities and described how it can provide comprehensive, customizable services for plasmid production. Kuo’s Presentation…
2022
Ask the Expert: Bolstering Manufacturing Capacity and Achieving Supply-Chain Resilience
The novel coronavirus pandemic has exposed vulnerabilities in biopharmaceutical industry approaches to supply-chain management. Drug developers and manufacturers have tended to presume suppliers’ access to raw materials for bioprocess components. However, global crises disrupt reliable access. Ari Ojinaka (production manager at Astrea Bioseparations) joined BPI in October 2021 to explore strategies for navigating supply-chain uncertainty. He described how his company seeks to optimize manufacturing capacity, enhance communication with its suppliers and customers, and support a quality-driven company culture. Ojinaka’s Presentation…
Ask the Expert: Scale-Up Success for Cell Cultures in Single-Use Benchtop Bioreactors
During process development (PD), single-use (SU) bioreactors can streamline cell-culture workflows and reduce risks for contamination and operator errors. But transferring cultures from laboratory- to benchtop- and pilot-scale vessels requires consideration of fundamental bioreactor principles. In October 2021, Ann D’Ambruoso (manager of product applications and marketing) and Cristina Bernal Martinez (applications support engineer, both at Getinge) reviewed factors for scale-up success and presented a case study involving transfer of cell cultures to Applikon AppliFlex SU stirred-tank (ST) reactors. The Presentations…
Ask the Expert: Optimized Cell Line Development for CHO DG44 Expression Systems
In November 2021, Rathangadhara Nammalwar (manager of protein-based therapeutics at Sartorius) delivered a presentation describing the hallmarks of a robust cell line development (CLD) platform. Focusing on the importance of expression constructs, he then explained how collaboration with external partners has enabled Sartorius to optimize its Cellca CLD platform for mammalian-cell production of therapeutic proteins. Nammalwar’s Presentation Nammalwar identified key criteria for selecting a CLD platform, noting first that it should leverage a highly productive cell line that yields high-quality…
Ask the Expert: A Platform for Purification and In-Process Analysis of Adenovirus Vectors
Despite safety-related setbacks in the early 2000s, adenovirus (Ad) again is gaining traction as a vector for advanced therapies and vaccines. Thus, Ad production is accelerating. In November 2021, Hana Jug (project manager in process development for viral vectors and vaccines at BIA Separations, a Sartorius company) described how her company’s updated platform process for Ad vectors could enhance their purification, maximizing recovery of critical vaccine components. Jug also highlighted BIA’s abilities to supply chromatographic columns consistently and to support…
Ask the Expert: Rapid Determination of AAV Capsid Titers at Early Manufacturing Stages
During a December 2021 presentation, Matthew Lotti (senior research associate in analytical development at Ultragenyx) highlighted difficulties with determining adenoassociated virus (AAV) capsid titers during gene therapy production. With support from Gyros Protein Technologies, Lotti spoke about his team’s development of a method for measuring AAV titers using a Gyrolab xPand immunoassay system. Lotti’s Presentation Simple analytical methods such as UV spectrophotometry measure capsid titers most effectively after virions have undergone purification. To test samples from earlier process stages, Ultragenyx…
An Ethical Option for Shelved Drugs
A key priority in today’s investment world is corporate adherence to environmental, social, and governance (ESG) requirements. A company’s ESG score serves as a marker of the organization’s values and as a disclosure mechanism for investors to consider. Many companies now consider ESG scores when making strategic choices, and my group has identified a tangible option. In 2019, the Children’s Tumor Foundation and CureSearch for Children’s Cancer, launched the Bridge initiative (1) in partnership with FasterCures, a division of the…
Facilitating Workforce Development: A case study on improving single-use training through vendor and end-user collaboration
Discover how Pall Corporation and Lonza collaborated to improve single-use technology training for operators using a blended approach to learning. This article presents: The importance of SUT training for operators. Why a blended approach ensures that operators get the training they need in the format that best suits their learning style. How collaboration between suppliers and biomanufacturers can shorten training program development timelines and increase the quality of training tools. How Pall and Lonza developed a digital training approach together.…
eBook: Antibody–Drug Conjugates —
A New Generation of Approaches Is Changing the Game
Combining large proteins with linkers and cytotoxins, antibody–drug conjugates (ADCs) may be the most complex drug molecules in development today. Despite early promise and product approvals, a number of technical concerns arose during product and process development. Characterizing and ensuring consistency in the number of small molecules that attach to the antibody — as well as ensuring their proper attachment and biophysics — all present significant challenges to ADC developers. Solving early problems associated with product quality has introduced a…
AAV Downstream Process and Product Characterization: Integrating Advanced Purification and Analytical Tools into the Workflow
The optimization of the downstream process for Adeno-associated virus (AAV) production with consistent quality depends on the ability to characterize critical quality attributes affecting potency, purity and safety of the final product. As the gene therapy field continues to push products through the clinical pipeline, an increasing need for efficient purification and analytical tools has become evident. In addition, the regulatory space has expanded in parallel to the use of AAV, driving the demand for simple and efficient assays to…