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Cell Culture-based Influenza Vaccines as Alternatives to Egg-based Vaccines
Lee, Ilseob,Kim, Jin Il,Park, Man-Seong 대한미생물학회 2013 Journal of Bacteriology and Virology Vol.43 No.1
Influenza viruses have raised public health concerns by seasonal epidemics and intermittent pandemics. Vaccination is considered as the most effective method for preventing influenza infection in humans. Current influenza vaccines are mostly produced in fertile chicken eggs. However, disadvantages of egg-based vaccines, such as egg dependency, labor-intensive manufacturing system, and huddle for large-scale output, allow us to make an alternative method. A cell-culture platform may be a fine alternative for the next generation vaccine technique. Compared with a classical egg-based method, cell-grown vaccines provide stable pipeline even in the pandemic situation with shorter lead-in times. In addition, cell-grown vaccines are flexible for altering production scales because stocked cell batches can be easily sub-cultured in large quantity without worrying avian diseases and a resultant decrease in egg production. By World Health Organization, MDCK, PER.C6, and Vero cells are only recommended for manufacturing influenza vaccines. In this review, we discuss the necessity, immunogenicity, and efficacy of cell-grown influenza vaccines compared with egg-based vaccines.
Lee, Sangmoo,Kim, Jin Il,Lee, Ilseob,Park, Man-Seong 대한미생물학회 2013 Journal of Bacteriology and Virology Vol.43 No.4
Influenza virus is a serious pathogen that burdens society with health care costs, and can lead to fatality. The virus is dealt with currently by vaccination and anti-influenza drugs. However, vaccines need to be improved towards safer and more efficient production formats, and drugs need to be constantly renewed to cope with resistances. That the neuraminidase inhibitors are only drugs currently available warrants urgent attention to an alternative anti-influenza target. In this paper we introduce studies on fusion activity of influenza virus hemagglutinin (HA), and discuss how to best utilize the knowledge for an improved vaccine development and an anti-influenza drug search. Potential application of mutations resulting in changes in fusion activity to cell culture optimized vaccine virus development and strategies to develop broad spectrum anti-influenza drugs through targeting the conserved fusion domain of the HA are discussed.
A Novel PA-X Protein Translated from Influenza A Virus Segment 3
Lee, Ilseob,Kim, Jin Il,Park, Man-Seong 대한미생물학회 2012 Journal of Bacteriology and Virology Vol.42 No.4
The pathogenicity of influenza A viruses is a multigenic trait, which is orchestrated by the global networks between eight viral genomic constituents and their cellular interacting partners. A recent report provided information on the finding of a new PA ribosomal frameshifting product, the PA-X protein, in the influenza A virus segment 3, and an endonuclease property was suggested for a possible role of the PA-X protein. In cultured cells, viral growth was not affected by the PA-X protein expression. However, the reduced pathogenicity of mice appeared to be closely associated with the PA-X protein expression. It was also revealed that the PA-X protein was able to modulate host gene expression. Considered together, the PA-X protein can be a cellular signaling modulator and subsequently control viral pathogenicity. By reviewing recent publications, we present new insights in the contribution of the PA-X protein to the cellular signaling network and the resultant viral pathogenicity.
Advantages of omics technology for evaluating cadmium toxicity in zebrafish
Min Eun Ki,Lee Ahn Na,Lee Ji-Young,Shim Ilseob,Kim Pilje,Kim Tae-Young,Kim Ki-Tae,Lee Sangkyu 한국독성학회 2021 Toxicological Research Vol.37 No.4
In the last decade, several advancements have been made in omics technologies and they have been applied extensively in diverse research areas. Especially in toxicological research, omics technology can efficiently and accurately generate relevant data on the molecular dynamics associated with adverse outcomes. Toxicomics is defined as the combination of toxicology and omics technologies and encompasses toxicogenomics, toxicoproteomics, and toxicometabolomics. This paper reviews the trend of applying omics technologies to evaluate cadmium (Cd) toxicity in zebrafish (D. rerio). Cd is a toxic heavy metal posing several environmental concerns; however, it is being used widely in everyday life. Zebrafish embryos and larvae are employed as standard models for many toxicity tests because they share 71.4% genetic homology with humans. This study summarizes the toxicity of Cd on the nerves, liver, heart, skeleton, etc. of zebrafish and introduces detailed omics techniques to understand the results of the toxicomic studies. Finally, the trend of toxicity evaluation in the zebrafish model of Cd based on omics technology is presented.