Genetic and phenotypic analysis of reassortants of high growth and low growth strains of influenza B virus. 2003

G M Vodeiko, and J McInnis, and V Chizhikov, and R A Levandowski
Laboratory of Pediatric and Respiratory Viral Diseases, Division of Viral Products, Office of Vaccines Research and Review, Center for Biologics and Evaluation and Research, Food and Drug Administration, Bethesda, MD 20892, USA. vodeiko@cber.fda.gov

The yield of influenza virus in eggs is critical to influenza vaccine production and availability, but the contribution of specific genes to the growth properties of influenza B viruses is not well understood. Influenza B/Beijing/184/93 and B/Shangdong/7/97 were chosen for study because B/Shangdong/7/97 replicated to several fold higher titers in eggs than B/Beijing/184/93 as demonstrated by hemagglutination titers and EID50. A reassortant with the HA, NP and PB2 genes from B/Beijing/184/93 and all other genes from B/Shangdong/7/97 had the high growth phenotype of B/Shangdong/7/97 in eggs, which suggests that NS, M, NA, PB1 or PA, or a combination of these genes derived from B/Shangdong/7/97 were needed for the high growth phenotype of the reassortants. A high degree of homology was found among the genetic sequences of B/Beijing/184/93, B/Shangdong/7/97, and other influenza B viruses. However, differences potentially related to growth characteristics were suggested by analysis of the deduced amino acid (AA) sequences of four genes: NS (NS1, NS2), M (BM2), NA (NA, NB) and PB1. The studies identify multiple genes that may affect growth of influenza B viruses in eggs.

UI MeSH Term Description Entries
D007252 Influenza Vaccines Vaccines used to prevent infection by viruses in the family ORTHOMYXOVIRIDAE. It includes both killed and attenuated vaccines. The composition of the vaccines is changed each year in response to antigenic shifts and changes in prevalence of influenza virus strains. The flu vaccines may be mono- or multi-valent, which contains one or more ALPHAINFLUENZAVIRUS and BETAINFLUENZAVIRUS strains. Flu Vaccine,Influenzavirus Vaccine,Monovalent Influenza Vaccine,Universal Flu Vaccine,Universal Influenza Vaccine,Flu Vaccines,High-Dose Trivalent Influenza Vaccine,Influenza Vaccine,Influenza Virus Vaccine,Influenza Virus Vaccines,Influenzavirus Vaccines,Intranasal Live-Attenuated Influenza Vaccine,LAIV Vaccine,Monovalent Influenza Vaccines,Quadrivalent Influenza Vaccine,Trivalent Influenza Vaccine,Trivalent Live Attenuated Influenza Vaccine,Universal Flu Vaccines,Universal Influenza Vaccines,Flu Vaccine, Universal,High Dose Trivalent Influenza Vaccine,Influenza Vaccine, Monovalent,Influenza Vaccine, Quadrivalent,Influenza Vaccine, Trivalent,Influenza Vaccine, Universal,Intranasal Live Attenuated Influenza Vaccine,Vaccine, Flu,Vaccine, Influenza,Vaccine, Influenza Virus,Vaccine, Influenzavirus,Vaccine, LAIV,Vaccine, Monovalent Influenza,Vaccine, Quadrivalent Influenza,Vaccine, Trivalent Influenza,Virus Vaccine, Influenza
D007700 Kinetics The rate dynamics in chemical or physical systems.
D009439 Neuraminidase An enzyme that catalyzes the hydrolysis of alpha-2,3, alpha-2,6-, and alpha-2,8-glycosidic linkages (at a decreasing rate, respectively) of terminal sialic residues in oligosaccharides, glycoproteins, glycolipids, colominic acid, and synthetic substrate. (From Enzyme Nomenclature, 1992) Sialidase,Exo-alpha-Sialidase,N-Acylneuraminate Glycohydrolases,Oligosaccharide Sialidase,Exo alpha Sialidase,Glycohydrolases, N-Acylneuraminate,N Acylneuraminate Glycohydrolases,Sialidase, Oligosaccharide
D009981 Influenza B virus Species of the genus BETAINFLUENZAVIRUS that cause HUMAN INFLUENZA and other diseases primarily in humans. Antigenic variation is less extensive than in type A viruses (INFLUENZA A VIRUS) and consequently there is no basis for distinct subtypes or variants. Epidemics are less likely than with INFLUENZA A VIRUS and there have been no pandemics. Previously only found in humans, Influenza B virus has been isolated from seals which may constitute the animal reservoir from which humans are exposed. Betainfluenzavirus influenzae,FLUBV,Human Influenza B Virus,Influenza Viruses Type B,Influenza virus type B,Orthomyxoviruses Type B,Influenza B viruses
D010641 Phenotype The outward appearance of the individual. It is the product of interactions between genes, and between the GENOTYPE and the environment. Phenotypes
D002460 Cell Line Established cell cultures that have the potential to propagate indefinitely. Cell Lines,Line, Cell,Lines, Cell
D002642 Chick Embryo The developmental entity of a fertilized chicken egg (ZYGOTE). The developmental process begins about 24 h before the egg is laid at the BLASTODISC, a small whitish spot on the surface of the EGG YOLK. After 21 days of incubation, the embryo is fully developed before hatching. Embryo, Chick,Chick Embryos,Embryos, Chick
D004279 DNA, Viral Deoxyribonucleic acid that makes up the genetic material of viruses. Viral DNA
D005838 Genotype The genetic constitution of the individual, comprising the ALLELES present at each GENETIC LOCUS. Genogroup,Genogroups,Genotypes
D006387 Hemagglutination, Viral Agglutination of ERYTHROCYTES by a virus. Hemagglutinations, Viral,Viral Hemagglutination,Viral Hemagglutinations

Related Publications

G M Vodeiko, and J McInnis, and V Chizhikov, and R A Levandowski
March 2005, Journal of virological methods,
G M Vodeiko, and J McInnis, and V Chizhikov, and R A Levandowski
July 1983, Virology,
G M Vodeiko, and J McInnis, and V Chizhikov, and R A Levandowski
January 1984, Journal of biological standardization,
G M Vodeiko, and J McInnis, and V Chizhikov, and R A Levandowski
January 1990, Voprosy virusologii,
G M Vodeiko, and J McInnis, and V Chizhikov, and R A Levandowski
December 2018, Journal of medical virology,
G M Vodeiko, and J McInnis, and V Chizhikov, and R A Levandowski
January 1996, Archives of virology,
G M Vodeiko, and J McInnis, and V Chizhikov, and R A Levandowski
January 2013, PloS one,
G M Vodeiko, and J McInnis, and V Chizhikov, and R A Levandowski
January 2008, Archives of virology,
G M Vodeiko, and J McInnis, and V Chizhikov, and R A Levandowski
February 2015, Vaccine,
Copied contents to your clipboard!