title: Metabolism of MDCK cells during cell growth and influenza virus production in large-scale microcarrier culture.
abstract: The production of equine influenza in Madin-Darby canine kidney (MDCK) cells in large-scale microcarrier culture is described with detailed on- and off-line analytical data during cell growth and virus replication. Metabolite concentration profiles for glucose, glutamine, lactate and ammonium are shown. Lactate and ammonium concentrations were always below inhibiting levels. Concentration profiles for essential and non-essential amino acids of the cell culture medium are discussed. During cell growth proline was released into the medium with a significant rate while two amino acids, serine and methionine were almost depleted. After infection, virus titer increased after a delay of 10-16 h whereas first changes in amino acid metabolism could be observed within 4h post-infection. Here, glutamate and aspartate increase correlated to virus release kinetics, indicating cell disruption and apoptosis. Starting with a moi of 0.025 resulted in a maximum virus yield of 2.4 log HA/100 microl at 44 h post-infection.
authors.affiliation: Max-Planck-Institute for Dynamics of Complex Technical Systems, Magdeburg, Sandtorstr. 1, 39106 Magdeburg, Germany. genzel@mpi-magdeburg.mpg.de
authors.forename: Y
authors.initials: Y
authors.lastname: Genzel
authors.forename: I
authors.initials: I
authors.lastname: Behrendt
authors.forename: S
authors.initials: S
authors.lastname: König
authors.forename: H
authors.initials: H
authors.lastname: Sann
authors.forename: U
authors.initials: U
authors.lastname: Reichl
mesh_terms: D000596:Amino Acids / Q000378:metabolism; D000818:Animals; D017209:Apoptosis; D001224:Aspartic Acid / Q000378:metabolism; D002460:Cell Line; D049109:Cell Proliferation; D018914:Cells, Immobilized; D004285:Dogs; D005947:Glucose / Q000378:metabolism; D005973:Glutamine / Q000378:metabolism; D019267:Hemagglutinin Glycoproteins, Influenza Virus / Q000032:analysis; D009980:Influenza A virus / Q000254:growth & development*; D007700:Kinetics; D019344:Lactic Acid / Q000378:metabolism; D008715:Methionine / Q000378:metabolism; D011392:Proline / Q000378:metabolism; D000644:Quaternary Ammonium Compounds / Q000378:metabolism; D012694:Serine / Q000378:metabolism; D014776:Virus Cultivation / Q000379:methods*; D014779:Virus Replication
chemical_list: D000596:Amino Acids; D019267:Hemagglutinin Glycoproteins, Influenza Virus; D000644:Quaternary Ammonium Compounds; D005973:Glutamine; D001224:Aspartic Acid; D019344:Lactic Acid; D012694:Serine; D011392:Proline; D008715:Methionine; D005947:Glucose