NDLI: Tropism and Infectivity of Influenza Virus, Including Highly Pathogenic Avian H5N1 Virus, in Ferret Tracheal Differentiated Primary Epithelial Cell Cultures

Content Provider	PubMed Central
Author	Zeng, Hui Goldsmith, Cynthia S. Maines, Taronna R. Belser, Jessica A. Gustin, Kortney M. Andrew, Pekosz Zaki, Sherif R. Katz, Jacqueline M. Tumpey, Terrence M.
Copyright Year	2013
Abstract	Tropism and adaptation of influenza viruses to new hosts is partly dependent on the distribution of the sialic acid (SA) receptors to which the viral hemagglutinin (HA) binds. Ferrets have been established as a valuable in vivo model of influenza virus pathogenesis and transmission because of similarities to humans in the distribution of HA receptors and in clinical signs of infection. In this study, we developed a ferret tracheal differentiated primary epithelial cell culture model that consisted of a layered epithelium structure with ciliated and nonciliated cells on its apical surface. We found that human-like (α2,6-linked) receptors predominated on ciliated cells, whereas avian-like (α2,3-linked) receptors, which were less abundant, were presented on nonciliated cells. When we compared the tropism and infectivity of three human (H1 and H3) and two avian (H1 and H5) influenza viruses, we observed that the human influenza viruses primarily infected ciliated cells and replicated efficiently, whereas a highly pathogenic avian H5N1 virus (A/Vietnam/1203/2004) replicated efficiently within nonciliated cells despite a low initial infection rate. Furthermore, compared to other influenza viruses tested, VN/1203 virus replicated more efficiently in cells isolated from the lower trachea and at a higher temperature (37°C) compared to a lower temperature (33°C). VN/1203 virus infection also induced higher levels of immune mediator genes and cell death, and virus was recovered from the basolateral side of the cell monolayer. This ferret tracheal differentiated primary epithelial cell culture system provides a valuable in vitro model for studying cellular tropism, infectivity, and the pathogenesis of influenza viruses.
Related Links	http://dx.doi.org/10.1128/jvi.02885-12
Ending Page	2607
Page Count	11
Starting Page	2597
File Format	PDF
ISSN	0022538X
e-ISSN	10985514
Journal	Journal of Virology
Issue Number	5
Volume Number	87
Language	English
Publisher	American Society for Microbiology
Publisher Date	2013-03-01
Access Restriction	Open
Rights Holder	American Society for Microbiology
Subject Keyword	Immunology Virology Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Virology Immunology Microbiology Insect Science

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