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          Institute: MPI für Dynamik komplexer technischer Systeme     Collection: Systems and Control Theory     Display Documents

ID: 238118.0, MPI für Dynamik komplexer technischer Systeme / Systems and Control Theory
Mathematical Model of Influenza A Virus Production in Large-Scale Microcarrier Culture
Authors:Möhler, L.; Flockerzi, D.; Sann, H.; Reichl, U.
Date of Publication (YYYY-MM-DD):2005
Title of Journal:Biotechnology and Bioengineering
Issue / Number:1
Start Page:46
End Page:58
Review Status:Peer-review
Audience:Experts Only
Intended Educational Use:No
Abstract / Description:A mathematical model that describes the replication of influenza A virus in animal cells in large-scale microcarrier culture is presented. The virus is produced in a two-step process, which begins with the growth of adherent Madin-Darby canine kidney (MDCK) cells. After several washing steps serum-free virus maintenance medium is added, and the cells are infected with equine influenza virus (A/Equi 2 (H3N8), Newmarket 1/93). A time-delayed model is considered that has three state variables: the number of uninfected cells, infected cells, and free virus particles. It is assumed that uninfected cells adsorb the virus culture.at the time of infection. The infection rate is proportional to the number of uninfected cells and free virions.Depending on multiplicity of infection (MOI), not necessarily all cells are infected by this first step leading to the production of free virions. Newly produced viruses can infect the remaining uninfected cells in a chain reaction. To follow the time course of virus replication, infected cells were stained with fluorescent antibodies. Quantitation of influenza viruses by a hemagglutination assay (HA) enabled the estimation of the total number of new virions produced, which is relevant for the production of inactivated influenza vaccines. ...
Free Keywords:mathematical model; virus dynamics; animal cell culture; influenza virus; vaccine production
External Publication Status:published
Document Type:Article
Communicated by:Jörg Raisch
Affiliations:MPI für Dynamik komplexer technischer Systeme/Systems and Control Theory
MPI für Dynamik komplexer technischer Systeme/Bioprocess Engineering
External Affiliations:Lars Moehler, Udo Reichl
Otto-von-Guericke-Universitat Magdeburg,
Lehrstuhl fur Bioprozesstechnik,
Universitatsplatz 2, 39106 Magdeburg, Germany
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