|
KMID : 0545120180280060997
|
|
Journal of Microbiology and Biotechnology
2018 Volume.28 No. 6 p.997 ~ p.1006
|
|
|
Generation of a High-Growth Influenza Vaccine Strain in MDCK Cells for Vaccine Preparedness
|
|
Kim Eun-Ha
Kwon Hyeok-Il
Park Su-Jin
Kim Young-Il
Si Young-Jae
Lee In-Won
Kim Se-Mi
Kim Soo-In
Ahn Dong-Ho
Choi Young-Ki
|
|
|
Abstract
|
|
|
|
As shown during the 2009 pandemic H1N1 (A(H1N1)pdm09) outbreak, egg-based influenza vaccine production technology is insufficient to meet global demands during an influenza pandemic. Therefore, there is a need to adapt cell culture-derived vaccine technology using suspended cell lines for more rapid and larger-scale vaccine production. In this study, we attempted to generate a high-growth influenza vaccine strain in MDCK cells using an A/ Puerto/8/1934 (H1N1) vaccine seed strain. Following 48 serial passages with four rounds of virus plaque purification in MDCK cells, we were able to select several MDCK-adapted plaques that could grow over 108 PFU/ml. Genetic characterization revealed that these viruses mainly had amino acid substitutions in internal genes and exhibited higher polymerase activities. By using a series of Rg viruses, we demonstrated the essential residues of each gene and identified a set of high-growth strains in MDCK cells (PB1D153N, M1A137T, and NS1N176S). In addition, we confirmed that in the context of the high-growth A/PR/8/34 backbone, A/ California/7/2009 (H1N1), A/Perth/16/2009 (H3N2), and A/environment/Korea/deltaW150/ 2006 (H5N1) also showed significantly enhanced growth properties (more than 107 PFU/ml) in both attached- and suspended-MDCK cells compared with each representative virus and the original PR8 vaccine strain. Taken together, this study demonstrates the feasibility of a cell culture-derived approach to produce seed viruses for influenza vaccines that are cheap and can be grown promptly and vigorously as a substitute for egg-based vaccines. Thus, our results suggest that MDCK cell-based vaccine production is a feasible option for producing large-scale vaccines in case of pandemic outbreaks.
|
|
|
KEYWORD
|
|
|
Influenza viruses, Cell-derived vaccine, Madin-Darby canine kidney (MDCK), Bioreactors
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
  
|
|