title: Exploring sialic acid receptors-related infection behavior of avian influenza virus in human bronchial epithelial cells by single-particle tracking.
abstract: Human respiratory tract epithelial cells are the portals of human infection with influenza viruses. However, the infection pathway of individual avian influenza viruses in human respiratory cells remains poorly reported so far. The single-particle tracking technique (SPT) is a powerful tool for studying the transport mechanism of biomolecules in live cells. In this work, we use quantum dots to label avian influenza H9N2 virus and elaborate on the infection mechanism of the virus in human bronchial epithelial (HBE) cells using a three-dimensional SPT technique. We have found that the H9N2 virus can infect HBE cells directly and the virus infection follows an actin filament- and microtubule-dependent process with a three-stage pattern. The transport behaviors show a high degree of consistency between the sialic acid receptors and the influenza virus. Real-time SPT provides dynamic evidence of the sialic acid receptors-related infection behavior of the avian influenza virus in live cells. The study of the influence of sialic acid receptors on virus infection may contribute to a better understanding of the cross-species transmission of the avian influenza virus.
authors.affiliation: Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, State Key Laboratory of Virology and Wuhan Institute of Biotechnology, Wuhan University, Wuhan, 430072, P.R. China.
authors.forename: Zhi-Gang
authors.initials: ZG
authors.lastname: Wang
authors.forename: Shu-Lin
authors.initials: SL
authors.lastname: Liu
authors.forename: Zhi-Ling
authors.initials: ZL
authors.lastname: Zhang
authors.forename: Zhi-Quan
authors.initials: ZQ
authors.lastname: Tian
authors.forename: Hong-Wu
authors.initials: HW
authors.lastname: Tang
authors.forename: Dai-Wen
authors.initials: DW
authors.lastname: Pang
mesh_terms: D000818:Animals; D001717:Birds / Q000821:virology; D001980:Bronchi / Q000473:pathology / Q000821:virology*; D002460:Cell Line; D004285:Dogs; D004847:Epithelial Cells / Q000821:virology; D006801:Humans; D005585:Influenza in Birds; D009975:Orthomyxoviridae / Q000472:pathogenicity*; D045663:Quantum Dots; D011956:Receptors, Cell Surface / Q000378:metabolism*
chemical_list: D011956:Receptors, Cell Surface; C092488:sialic acid receptor
keywords: avian influenza virus; biomedical applications; quantum dots; sialic acid receptors; single-particle tracking; virus infection