eBooks

eBook: Viral Vector Purification — A Discussion of Current Challenges and Methods

Adenoassociated viral (AAV) vectors have become synonymous with gene therapy delivery. However, because they are produced in such small quantities and because their upstream processes carry comparatively large amounts of host-cell DNA and other impurities, AAV purification can be challenging. Several researchers have applied different chromatographic strategies, but no universal method has been adopted in the biopharmaceutical industry. This eBook features a discussion among several industry experts that explores challenges specific to AAV purification, shedding light on whether current strategies…

eBook: Trends in Facility Design — In-House Manufacturing Considerations for Cell and Gene Therapy Production

Manufacturing and facility challenges facing cell and gene therapy companies are similar to but more complex than those encountered by companies that produce traditional biopharmaceuticals such as vaccines, monoclonal antibodies, and other therapeutic proteins. A single product can have multiple components, manufacturing of which may or may not be outsourced. Project timelines are short, production technologies are new and evolving, and clinical demands change rapidly. Increasing competition for contract manufacturing services requires reserving capacity far in advance, which in most…

challenges with exosome therapy

eBook: Challenges in Industrial Process Development of Exosome-Based Therapies: Characterizing and Managing Diversity

The traditional classification of extracellular vesicles (EVs) includes three types: exosomes, microvesicles, and apoptotic vesicles. Each type arises from a distinct origin and exhibits distinct characteristics. The problem is that their size ranges overlap and that the major surface proteins presented by exosomes also are present on the surfaces of microvesicles and apoptotic bodies. This makes it a challenge for process developers to identify the vesicle fraction that best serves a particular exosome therapy. Anion-exchange chromatography (AEC) can fractionate EVs…

eBook: Expression Systems — Innovative Techniques for Conventional Cell Lines

Although Chinese hamster ovary (CHO) and Escherichia coli cells have become the biopharmaceutical industry’s preferred platforms for producing recombinant proteins, perennial challenges have limited the capabilities of those expression systems. New CHO lines and improved upstream methods steadily are increasing expression titers, yet researchers continue to decry CHO’s relatively low growth rate. E. coli exhibits strong growth kinetics but cannot perform posttranslational modifications necessary for complex therapeutic proteins. Researchers need advanced technologies and analytical methods to overcome such limitations. This…

eBook: Cancer Vaccines ⁠— Innovation Fuels an Immunotherapy Renaissance

Despite early successes a decade ago, cancer vaccines designed to deliver peptides or proteins — or nucleic acids encoding those antigens — generally have fizzled out since then. As a result, cancer vaccine development and the field of immunotherapy lost some traction overall. But as freelance contributor Jim Kling describes in this eBook, new innovations in product design, testing, and manufacturing are fueling a renaissance in cancer vaccine development. From checkpoint inhibitors to neoantigens, immune regulators, and beyond, companies are…

eBook: Formulation, Fill, Finish ⁠— Biopharmaceutical Drug Products for a Modern Age

Biopharmaceutical drugs are increasing in sophistication, requiring technological advancements to solve related challenges. The contributors to this BPI eBook highlight drug-product formulation concerns and collaborative efforts toward solving the fill–finish conundrum. First, the BioPhorum’s Scott Ewan describes a holistic approach to container–closure integrity and the organization’s work toward developing and expanding upon that approach. Ewan explores how advancing analytical technologies, risk management, and quality by design (QbD) are changing the strategies related to container–closure integrity, which remains a significant aspect…

Biosimilars Pipeline and Market Trends

Most biopharmaceutical industry experts now consider biosimilars to be mainstream products, indicating that the field has progressed immensely over the past 10 years. Nevertheless, when comparing approvals and commercial offerings across the globe between 2013 and 2020, it becomes clear that some regions welcome these therapies more than others do. Western European biosimilars markets continue to be kind to these drugs’ production, distribution, and coverage; and companies headquartered in Asia and the Pacific Rim increasingly are getting involved in biosimilars…

eBook: Next-Generation Vaccines — COVID-19 Challenges, Opportunities, and Patent Questions

Resolving the COVID-19 pandemic depends on treatments, testing, and ultimately a widely disseminated vaccine against SARS-CoV-2. In recent decades, the biopharmaceutical industry has developed new approaches to vaccination using antigens, virus-like particles (VLPs), viral and bacterial vectors, and nucleic acids. Current events have placed those innovations at the front and center of public attention, offering many companies an opportunity to demonstrate their potential in an unprecedented way. Here, BPI’s senior technical editor describes the challenges that developers face in doing…

eBook: A Light-Chain Platform for Developing Bispecific Antibodies

Biopharmaceutical researchers are focusing on novel platforms to quickly develop bispecific antibody (BsAb) therapies for treating complex diseases such as cancer. BsAb therapies offer several advantages because they are designed to bind two unique epitopes. In this report, Bill Lundberg, president and chief executive officer at Merus, describes his company’s efficient approach to developing BsAbs using “common light chain” technology and other proprietary strategies. Lundberg also addresses the company’s approach to typical BsAb development and manufacturing challenges. Fill out the…

eBook: Development of Bioassays — A Report from the BEBPA’s First Virtual Meeting

Bioassay development is one of the most challenging aspects of biotherapeutic development. These tests are vital to providing an accurate picture of potency, stability, and biological activity. But bioassay development can be complex and expensive — and often test results can vary. Cell-based bioassays especially lack robustness. In March 2020, the Biopharmaceutical Emerging Best Practices Association (BEBPA) presented its annual bioassay conference in virtual format. Here, BPI’s senior technical editor reports on the conference’s discussions. Read on to learn more…