Tropism, replication competence, and innate immune responses of influenza virus: an analysis of human airway organoids and ex-vivo bronchus cultures

The Lancet. Respiratory Medicine
Kenrie P Y HuiMichael C W Chan

Abstract

Human airway organoids are three-dimensional cultures derived from stem cells, which self-organise in ex-vivo conditions to form so-called mini-airways. The cellular morphology of these cultures is physiologically similar to the human airway, with cilia, goblet cells, and club cells facing the inner lumen and basal cells situated at the outer layer. The aim of this study was to compare replication competence, tissue tropism, and host responses elicited by human and avian strains of influenza A virus in ex-vivo human bronchus and human airway organoids. Between Sept 29, 2016, and Jan 4, 2017, we obtained ex-vivo cultures of the human bronchus and cultured human airway organoids from lung stem cells obtained from human lung tissues removed as part of the routine clinical care of patients undergoing surgical resection at the Department of Cardiothoracic Surgery, University of Hong Kong, Queen Mary Hospital, Hong Kong. We compared viral replication competence, tissue tropism, and cytokine and chemokine induction of avian influenza A viruses isolated from humans (Sh2/H7N9, H5N1/483, H5N6/39715), and human H1N1pdm/415742 in airway organoids and ex-vivo bronchus explant cultures. Virus tropism and replication kinetics of human and avi...Continue Reading

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Citations

Jan 16, 2019·The EMBO Journal·Norman SachsHans Clevers
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