Journal article
The molecule of DC-SIGN captures enterovirus 71 and confers dendritic cell-mediated viral trans-infection
Virology journal, Vol.11(1), pp.47-47
03/12/2014
DOI: 10.1186/1743-422X-11-47
PMCID: PMC3995660
PMID: 24620896
Abstract
Background: Enterovirus 71 (EV71) is the main causative agent of hand, foot and mouth disease that occurs in young children. Neither antiviral agents nor vaccines are available for efficiently combating viral infection. Study of EV71-host interplay is important for understanding viral infection and developing strategies for prevention and therapy. Here the interactions of EV71 with human dendritic cells were analyzed.
Methods: EV71 capture, endocytosis, infection, and degradation in monocyte-derived dendritic cells (MDDCs) were detected by Flow cytometry or real-time (RT-) PCR, and MDDCs-mediated EV71 trans-infection of RD cells was determined via coculture system. Cell morphology or viability was monitored with microscopy or flow cytometry. SiRNA interference was used to knock down gene expression.
Results: MDDCs can bind EV71, but these loaded-EV71 particles in MDDCs underwent a rapid degradation in the absence of efficient replication; once the captured EV71 encountered susceptible cells, MDDCs efficiently transferred surface-bound viruses to target cells. The molecule of DC-SIGN (DC-specific intercellular adhesion molecule-3 grabbing nonintegrin) mediated viral binding and transfer, because interference of DC-SIGN expression with specific siRNAs reduced EV71 binding and impaired MDDC-mediated viral trans-infection, and exogenous expression of DC-SIGN molecule on Raji cell initiated viral binding and subsequent transmission.
Conclusion: MDDCs could bind efficiently EV71 viruses through viral binding to DC-SIGN molecule, and these captured-viruses could be transferred to susceptible cells for robust infection. The novel finding of DC-mediated EV71 dissemination might facilitate elucidation of EV71 primary infection and benefit searching for new clues for preventing viruses from initial infection.
Details
- Title: Subtitle
- The molecule of DC-SIGN captures enterovirus 71 and confers dendritic cell-mediated viral trans-infection
- Creators
- Xiao-Xin Ren - Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, USALi Ma - Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, USAQing-Wei Liu - Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, USAChuan Li - Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, USAZhong Huang - Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, USALi Wu - Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, USASi-Dong Xiong - Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, USAJian-Hua Wang - Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, USAHai-Bo Wang - Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, USA
- Resource Type
- Journal article
- Publication Details
- Virology journal, Vol.11(1), pp.47-47
- DOI
- 10.1186/1743-422X-11-47
- PMID
- 24620896
- PMCID
- PMC3995660
- NLM abbreviation
- Virol J
- ISSN
- 1743-422X
- eISSN
- 1743-422X
- Publisher
- BioMed Central
- Language
- English
- Date published
- 03/12/2014
- Academic Unit
- Microbiology and Immunology
- Record Identifier
- 9984002376102771
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