Author Archives: Michelet Dorceus

Comparing Culture Methods in Monoclonal Antibody Production: Batch, Fed-Batch, and Perfusion

Recombinant protein manufacturing with Chinese hamster ovary (CHO) cells represents over 70% of the entire biopharmaceutical industry (1). In fact, human monoclonal antibodies (hMAbs) produced by CHO cells have played a major role in both the diagnostic and therapeutic markets for decades. One of the first human–mouse chimeric MAbs to obtain FDA approval was Roche’s rituximab treatment for non-Hodgkin’s lymphoma, chronic lymphocytic leukemia, and rheumatoid arthritis. Since that approval in 1997, scores of chimeric, humanized, and human MAbs have gained…

Single-Use Technologies: BIO Theater @ Interphex 2015

Andrew Lidums (NA business development manager, Parker domnick hunter) 2:30–2:55 pm Implementing a Risk-Management–Based Approach to the Prevention of Mycoplasma Contaminations Lidums began with a recent report from Genentech, where a 150-µm long Leptospira organism from a drainage ditch outside the facility managed to penetrate 0.1-µm filters. The company solved this problem by lowering the temperature of the filtration operation, which made the bacteria more rigid and kept them from getting through. Clearly, however, contaminations happen even at large facilities.…