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dc.contributor.authorNightingale, Zachary Davis
dc.contributor.authorPatkar, Chinmay
dc.contributor.authorRothman, Alan L.
dc.date2022-08-11T08:08:52.000
dc.date.accessioned2022-08-23T16:10:43Z
dc.date.available2022-08-23T16:10:43Z
dc.date.issued2008-07-26
dc.date.submitted2009-02-24
dc.identifier.citationJ Leukoc Biol. 2008 Oct;84(4):1028-38. Epub 2008 Jul 23. <a href="http://dx.doi.org/10.1189/jlb.0208105">Link to article on publisher's site</a>
dc.identifier.issn0741-5400 (Print)
dc.identifier.doi10.1189/jlb.0208105
dc.identifier.pmid18653464
dc.identifier.pmid18653464
dc.identifier.urihttp://hdl.handle.net/20.500.14038/32999
dc.description.abstractDengue virus (DENV), a re-emerging arbovirus, readily infects dendritic cells (DC) in culture and in vivo. However, there have been contradictory reports regarding the effect of DENV infection on DC activation and maturation. DC undergo a series of functional changes following exposure to infectious agents, including cytokine production and costimulatory and MHC molecule induction, culminating in stimulation of adaptive immune responses. Immunological memory to primary DENV infection critically influences disease severity during subsequent infections with heterologous serotypes. To explore these phenomena, we examined DENV infection-dependent and -independent effects on DC secretory, phenotypic, and allostimulatory functions. DENV infection of DC resulted in the secretion of a broad array of cytokines and chemokines. Type I IFN produced by DC inhibited propagation of infection and induced the chemokine IFN-gamma-inducible protein 10 (IP-10; CXCL10). Based on intracellular cytokine staining, infected DC produced less IP-10 but more TNF-alpha than uninfected bystander cells in the same culture. DENV exposure activated surface molecule expression on infected and bystander cells; infected DC had enhanced programmed death ligand 2 (PD-L2) and MHC II expression but reduced levels of PD-L1, CD80, CD86, and MHC I relative to bystander DC. Dengue-infected DC cultures stimulated resting allogeneic CD4 T cell proliferation, although an increasing multiplicity of infection was associated with decreasing stimulatory capacity of DC. These data demonstrate that functional maturation of DC in response to dengue infection is modified by the presence of virus through IFN-dependent and -independent mechanisms with consequences for the development of adaptive immunity.
dc.language.isoen_US
dc.relation<a href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Retrieve&list_uids=18653464&dopt=Abstract">Link to Article in PubMed</a>
dc.relation.urlhttp://dx.doi.org/10.1189/jlb.0208105
dc.subjectChemokines; Cytokines; Dendritic Cells; Dengue; Dengue Virus; Disease Susceptibility; Flow Cytometry; Humans; Monocytes; T-Lymphocytes; Thymidine; Virus Replication
dc.subjectLife Sciences
dc.subjectMedicine and Health Sciences
dc.titleViral replication and paracrine effects result in distinct, functional responses of dendritic cells following infection with dengue 2 virus
dc.typeJournal Article
dc.source.journaltitleJournal of leukocyte biology
dc.source.volume84
dc.source.issue4
dc.identifier.legacycoverpagehttps://escholarship.umassmed.edu/gsbs_sp/1548
dc.identifier.contextkey738141
html.description.abstract<p>Dengue virus (DENV), a re-emerging arbovirus, readily infects dendritic cells (DC) in culture and in vivo. However, there have been contradictory reports regarding the effect of DENV infection on DC activation and maturation. DC undergo a series of functional changes following exposure to infectious agents, including cytokine production and costimulatory and MHC molecule induction, culminating in stimulation of adaptive immune responses. Immunological memory to primary DENV infection critically influences disease severity during subsequent infections with heterologous serotypes. To explore these phenomena, we examined DENV infection-dependent and -independent effects on DC secretory, phenotypic, and allostimulatory functions. DENV infection of DC resulted in the secretion of a broad array of cytokines and chemokines. Type I IFN produced by DC inhibited propagation of infection and induced the chemokine IFN-gamma-inducible protein 10 (IP-10; CXCL10). Based on intracellular cytokine staining, infected DC produced less IP-10 but more TNF-alpha than uninfected bystander cells in the same culture. DENV exposure activated surface molecule expression on infected and bystander cells; infected DC had enhanced programmed death ligand 2 (PD-L2) and MHC II expression but reduced levels of PD-L1, CD80, CD86, and MHC I relative to bystander DC. Dengue-infected DC cultures stimulated resting allogeneic CD4 T cell proliferation, although an increasing multiplicity of infection was associated with decreasing stimulatory capacity of DC. These data demonstrate that functional maturation of DC in response to dengue infection is modified by the presence of virus through IFN-dependent and -independent mechanisms with consequences for the development of adaptive immunity.</p>
dc.identifier.submissionpathgsbs_sp/1548
dc.contributor.departmentCenter for Infectious Disease and Vaccine Research
dc.contributor.departmentGraduate School of Biomedical Sciences
dc.source.pages1028-38


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