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Antigen-specific T-cell responses to a recombinant fowlpox virus are dependent on MyD88 and interleukin-18 and independent of toll-like receptor 7 (TLR7)- and TLR9-mediated innate immune recognition

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dc.contributor.authorLousberg, E.
dc.contributor.authorDiener, K.
dc.contributor.authorFraser, C.
dc.contributor.authorPhipps, S.
dc.contributor.authorFoster, P.
dc.contributor.authorChen, W.
dc.contributor.authorUematsu, S.
dc.contributor.authorAkira, S.
dc.contributor.authorRobertson, S.
dc.contributor.authorBrown, M.
dc.contributor.authorHayball, J.
dc.date.issued2011
dc.description.abstractFowlpox virus (FWPV) is a double-stranded DNA virus long used as a live-attenuated vaccine against poultry diseases, but more recent interest has focused on its use as a mammalian vaccine vector. Here, in a mouse model system using FWPV encoding the nominal target antigen chicken ovalbumin (OVA) (FWPVOVA), we describe for the first time some of the fundamental processes by which FWPV engages both the innate and adaptive immune systems. We show that Toll-like receptor 7 (TLR7) and TLR9 are important for type I interferon secretion by dendritic cells, while TLR9 is solely required for proinflammatory cytokine secretion. Despite this functional role for TLR7 and TLR9 in vitro, only the adapter protein myeloid differentiation primary response gene 88 (MyD88) was shown to be essential for the formation of adaptive immunity to FWPVOVA in vivo. The dependence on MyD88 was confined only to the T-cell compartment and was not related to its contribution to TLR signaling, dendritic cell maturation, or the capture and presentation of FWPV-derived OVA antigen. We demonstrate that this is not by means of mediating T-cell-dependent interleukin-1 (IL-1) signaling, but rather, we suggest that MyD88 functions to support T-cell-specific IL-18 receptor signaling, which in turn is essential for the formation of adaptive immunity to FWPV-encoded OVA.
dc.description.statementofresponsibilityErin L. Lousberg, Kerrilyn R. Diener, Cara K. Fraser, Simon Phipps, Paul S. Foster, Weisan Chen, Satoshi Uematsu, Shizuo Akira, Sarah A. Robertson, Michael P. Brown and John D. Hayball
dc.identifier.citationJournal of Virology, 2011; 85(7):3385-3396
dc.identifier.doi10.1128/JVI.02000-10
dc.identifier.issn0022-538X
dc.identifier.issn1098-5514
dc.identifier.orcidDiener, K. [0000-0001-8417-5542]
dc.identifier.orcidRobertson, S. [0000-0002-9967-0084]
dc.identifier.orcidBrown, M. [0000-0002-5796-1932] [0000-0002-6678-1407]
dc.identifier.orcidHayball, J. [0000-0002-3089-4506]
dc.identifier.urihttp://hdl.handle.net/2440/87928
dc.language.isoen
dc.publisherAmerican Society for Microbiology
dc.relation.granthttp://purl.org/au-research/grants/arc/LP0561810
dc.relation.granthttp://purl.org/au-research/grants/nhmrc/453556
dc.rights© 2011, American Society for Microbiology.
dc.source.urihttps://doi.org/10.1128/JVI.02000-10
dc.subjectfowlpox virus
dc.subjectpoultry disease
dc.subjectinterleukin-18
dc.subjectMyD88
dc.subjectToll-like receptor 7
dc.subjectimmune systems
dc.subjectvaccine vector
dc.titleAntigen-specific T-cell responses to a recombinant fowlpox virus are dependent on MyD88 and interleukin-18 and independent of toll-like receptor 7 (TLR7)- and TLR9-mediated innate immune recognition
dc.typeJournal article
pubs.publication-statusPublished

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