title: Susceptibility of mouse minute virus to inactivation by heat in two cell culture media types.
abstract: Viral contaminations of biopharmaceutical manufacturing cell culture facilities are a significant threat and one for which having a risk mitigation strategy is highly desirable. High temperature, short time (HTST) mammalian cell media treatment may potentially safeguard manufacturing facilities from such contaminations. HTST is thought to inactivate virions by denaturing proteins of the viral capsid, and there is evidence that HTST provides ample virucidal efficacy against nonenveloped or naked viruses such as mouse minute virus (MMV), a parvovirus. The aim of the studies presented herein was to further delineate the susceptibility of MMV, known to have contaminated mammalian cell manufacturing facilities, to heat by exposing virus-spiked cell culture media to a broad range of temperatures and for various times of exposure. The results of these studies show that HTST is capable of inactivating MMV by three orders of magnitude or more. Thus, we believe that HTST is a useful technology for the purposes of providing a barrier to adventitious contamination of mammalian cell culture processes in the biopharmaceutical industry.
authors.affiliation: Biosafety Development Laboratory, Amgen, Seattle, WA 98119, USA.
authors.forename: Marc
authors.initials: M
authors.lastname: Schleh
authors.forename: Peter
authors.initials: P
authors.lastname: Romanowski
authors.forename: Prince
authors.initials: P
authors.lastname: Bhebe
authors.forename: Li
authors.initials: L
authors.lastname: Zhang
authors.forename: Shivanthi
authors.initials: S
authors.lastname: Chinniah
authors.forename: Bill
authors.initials: B
authors.lastname: Lawrence
authors.forename: Houman
authors.initials: H
authors.lastname: Bashiri
authors.forename: Asri
authors.initials: A
authors.lastname: Gaduh
authors.forename: Viveka
authors.initials: V
authors.lastname: Rajurs
authors.forename: Brian
authors.initials: B
authors.lastname: Rasmussen
authors.forename: Alice
authors.initials: A
authors.lastname: Chuck
authors.forename: Houman
authors.initials: H
authors.lastname: Dehghani
mesh_terms: D003470:Culture Media / Q000032:analysis*; D004203:Disinfection / Q000379:methods*; D004340:Drug Contamination; D006358:Hot Temperature; D008915:Minute Virus of Mice / Q000737:chemistry* / Q000502:physiology; D038301:Virus Inactivation
chemical_list: D003470:Culture Media