Search results for "Protein A" in Articles / App Notes
Article
A Closer Look at Affinity Ligands
The most common example in the realm of bioprocessing is Protein A, which has an extremely high affinity for some immunoglobulin molecules. Other examples include antibody/antigen, enzyme/substrate, a…
Article
Elucidating Biosimilars Characterization
This is especially so for recombinant human proteins, or ‘humanized’ antibodies (antibodies that have a significant part of their protein amino-acid sequence from human origin), as they are highly imm…
Article
Impact of Manufacturing-Scale Freeze-Thaw Conditions on a mAb Solution
The freezing rate in a single freeze-thaw cycle had negligible impact on protein aggregation when fast-thawing conditions were used to thaw. Slow thawing led to higher protein aggregation and subvisib…
Article
A Risk-Based Genetic Characterization Strategy for Recombinant CHO Cell Lines Used for Clinical and Commercial Applications
Figure 1: Transgene copy number distribution profiles of cell lines expressing recombinant protein at generations of 0, 30, 45, and 60. Generation 0 (G0) represents the generation of a master cell ban…
Article
Best Practices for Selecting a Top-Quality Cell Line
Irina Shi - Stock.Adobe.com
Leveraging automation and a step-by-step approach are keys to success.
By Cynthia A. Challener
Cell lines determine the performanc…
Article
Fermentation for the Future
Improving efficiency, value chain, quality, and protein complexity with advanced bioprocess development.
Jan 01, 2015
By Cynthia Challener, PhD
Microorganisms—bacteria and yeast—have b…
Article
Evolution of the Monoclonal Antibody Purification Platform
Typical steps include:
• Protein A chromatography for capture of the product and removal of host cell-related impurities (host cell proteins and DNA). Though extremely efficient and effective,…
Article
Quality by design for biotechnology products—part 1
…idual medium supplements such as protein hydrolysates, and components such as nucleases or residual Protein A from chromatography resins used in the purification process.
There are multiple appro…
Article
HT Multi-Product Liquid Chromatography for Characterization of Monoclonal Antibodies
Recently, automated 2D Protein A–SEC methods for the purification and analysis of MAbs have been developed.28,29 In these methods, multiple protein separation steps were performed automatically. Sampl…
Article
A Look at the Affinity Chromatography Landscape
…rved as a method for removal of process-related impurities such as host-cell proteins and DNA, with Protein A the most widely used resin. Resin suppliers have in recent years been challenged to incre…