Adventitious agent contamination risk mitigation: engineering MMV virus resistance into CHO cells

Abstract

Background The introduction of animal origin free (AOF) media has significantly reduced the incidence of adventitious virus contamination in biological production systems. Nevertheless, contamination by the parvovirus Mouse Minute Virus (MMV) remains a continuing challenge. Although infrequent, infection of a fermenter can be catastrophic for a manufacturer, and can also have a potential impact on drug supply, patient safety and have regulatory implications. In this work, we evaluated engineering Chinese Hamster Ovary (CHO) cell lines to create a new host cell line that