title: Use of MDCK cells for production of live attenuated influenza vaccine.
abstract: To develop a cell-based live attenuated influenza vaccine (LAIV) manufacturing process, several different cell lines were evaluated by comparing the titer of viruses after infection with LAIV strains. While several cell lines have been reported to support influenza virus replication, the degree of replication and the ability to support replication of LAIV strains have not been systematically examined. MDCK cells, which have been considered as potential substrates for influenza vaccine production were evaluated in addition to Vero, MRC-5, WI-38 and FRhL cells. MRC-5, WI-38 and FRhL cells produced low to moderate titers of virus with titers equal or below 5.0 log(10) TCID(50)/mL. Both Vero and MDCK cells could support a higher level of virus replication for certain strains, however, Vero cells only produced high titers when grown in the presence of serum. MDCK cells supported high levels of vaccine virus production for multiple different LAIV subtypes in both serum containing and serum-free media. These results suggest that MDCK cell-based production can be used as an alternative production platform to the currently used egg-based LAIV production system.
authors: MedImmune, LLC., 3055 Patrick Henry Drive, Santa Clara, CA 95054, United States. liuj@medimmune.com
authors: Jonathan
authors: J
authors: Liu
authors: Xiao
authors: X
authors: Shi
authors: Richard
authors: R
authors: Schwartz
authors: George
authors: G
authors: Kemble
mesh_terms: D000818:Animals; D018929:Cell Culture Techniques / Q000379:methods*; D002460:Cell Line; D002522:Chlorocebus aethiops; D003470:Culture Media; D004285:Dogs; D009980:Influenza A virus / Q000254:growth & development*; D007252:Influenza Vaccines / Q000096:biosynthesis* / Q000276:immunology; D016865:Reassortant Viruses / Q000254:growth & development*; D014613:Vaccines, Attenuated / Q000096:biosynthesis / Q000276:immunology; D014709:Vero Cells; D014776:Virus Cultivation / Q000379:methods
chemical_list: D003470:Culture Media; D007252:Influenza Vaccines; D014613:Vaccines, Attenuated