Search Results for: antibody characterization

The CMC Strategy Forum Series, Part 1 – QbD and Risk Management

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Introduction by Cheryl Scott The CMC Strategy Forum series provides a venue for biopharmaceutical product discussion. The meetings focus on relevant chemistry, manufacturing, and controls (CMC) issues throughout the life cycle of a therapeutic and thereby foster collaborative technical and regulatory interaction. Forum chairs share information with regulatory agencies to help them merge good scientific and regulatory practices. Outcomes of the forum meetings are published in BioProcess International. This process is meant to help ensure that biopharmaceutical products manufactured with…

January 13, 2015

Modern Laboratory Design: Creating a Space for Effective Collaboration

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When asked to envision a modern biotechnology laboratory, lay persons might describe what they’ve seen on an episode of CSI: Miami. Gleaming glass and striking colored lights might look good on television, but they are not what biological researchers need to do their work most effectively. Most of the real biological laboratories I’ve visited, in fact, have been stark, white, fluorescent-lit environments that more resemble something out of 2001: A Space Odyssey. But those are becoming passé. The newest concepts…

December 11, 2014

Accelerated Product Development: Leveraging Industry and Regulator Knowledge to Bring Products to Patients Quickly

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A Chemistry, Manufacturing and Controls (CMC) Strategy Forum titled “Accelerated Product Development: Leveraging Combined Industry and Regulator Knowledge to Bring Products to Patients More Quickly†was held in Washington, DC, on 27 January 2014. Biological therapeutics in development are demonstrating remarkable results in the clinic for many indications. So companies are seeking ways to accelerate the approval of these therapies and rapidly bring them to market. Many such products take the form of well-characterized proteins (e.g., IgG1 or IgG2 monoclonal…

December 11, 2014

Unwanted Immunogenicity: From Risk Assessment to Risk Management

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Although vaccines and immunotherapies are designed to engage the human immune system in fighting disease, unwanted immunogenicity can be a major problem for protein-based therapeutics. Some patients produce antidrug antibodies (ADAs), which might lead to drug inactivation or adverse effects. Even human and humanized proteins have proven to be surprisingly immunogenic in some cases, suggesting that immune tolerance requires careful consideration in biologic product design. In rushing to deliver new drugs to market, some biotherapeutics developers have overlooked factors that…

November 10, 2014

Immunoglobulin Fc-Fusion Proteins Part 2: Therapeutic Uses and Clinical Development

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The potential therapeutic value of many proteins — including enzymes, receptors, cytokines, blood factors and peptides — can be realized by fusing them to the Fc region of human immunoglobulin G. Of the 46 monoclonal antibody (MAb) and MAb-derivative products approved by the FDA to date as human therapeutics, 10 are Fc-fusion proteins (Table 2). Among approved products, several structural variations are represented (Figure 4). In BPI’s October 2014 issue, Part 1 of this review examined the structure and manufacturing…

November 10, 2014

Reducing Timelines in Early Process Development – Using a Multiparametric Clone-Selection and Feed-Optimization Strategy

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The market for biopharmaceutical products remains highly attractive to small biotechnology companies and big pharmaceutical corporations alike (1). Most leading market products are made using recombinant technology (2). Pressures are continually increasing on process development groups to reduce development costs and timelines for taking new clinical products forward from product research bench scale into initial clinical evaluation studies. For many years a recognized critical bottleneck in development of products from mammalian cell lines was selection and isolation of stable, high-producing…

November 10, 2014

Creating Value Through Investment

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During my MBA course, Professor Pierre Casse — then at the International Institute for Management Development (IMD) in Lausanne, Switzerland — regularly reminded us that one key to success was constantly finding new ways to “delight and inspire your clients†by creating value. SAFC achieved that objective in its “Overcoming Supply Chain Vulnerability and Lowering Risk in Biopharmaceutical Manufacturing†symposium 17–18th June 2014 in Turnberry, Scotland. Along with a day of industry insight, the event included a visit and tour…

November 10, 2014

Trends in Setting Single-Use Technology Standards

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The biopharmaceutical industry now incorporates single-use (SU) technology and systems in most production processes based on cell culture (1, 2). Implementation of such technologies has led to the availability of prepackaged and sterilized systems complete and ready for use with preinstalled mixers and monitoring probes. From upstream process- material preparation through final-product formulation, biopharmaceutical sponsors are increasingly presented with numerous SU solutions that support all major production platforms (3–5). The number of SU materials and suppliers in biopharmaceutical manufacturing has…

October 16, 2014

Understanding and Controlling Sources of Process Variation: Risks to Achieving Product Critical Quality Attributes

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Biopharmaceuticals include recombinant proteins, vaccines, gene therapies, and drug products derived from stem cell technology. One key characteristic of shared by all biologics is that they tend to be extremely large molecules with complex three-dimensional structures, critical to their functionality. For example, monoclonal antibodies (MAbs) are composed of more than one thousand times larger than a molecule of aspirin (one analogy compares the complexity of a MAb to that of an F16 jet, and the complexity of aspirin to that…

October 16, 2014

Immunoglobulin Fc-Fusion Proteins Part 1: Their Design and Manufacture

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Over the past three decades, 45 monoclonal antibody (MAbs) and MAb-derivative products have been approved for therapeutic use in the United States (Table 1). One class of antibody derivatives is growing in importance: Fc-fusion proteins. Many biologically active proteins, including receptor ECDs (see “Abbreviations†box), cytokines, enzymes, and bioactive peptides have very short serum half lives because rapid renal clearance limits their exposure in target tissue (and, consequently, their pharmacological effect). The primary reason for fusing a biologically active protein…

October 16, 2014