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2013-02-26Zeitschriftenartikel DOI: 10.1007/s12026-013-8387-x
Immunisation with foamy virus Bet fusion proteins as novel strategy for HIV-1 epitope delivery
dc.contributor.authorMühle, Michael
dc.contributor.authorHoffmann, Kerstin
dc.contributor.authorLöchelt, Martin
dc.contributor.authorDenner, Joachim
dc.date.accessioned2018-05-07T17:33:15Z
dc.date.available2018-05-07T17:33:15Z
dc.date.created2014-03-17
dc.date.issued2013-02-26none
dc.identifier.otherhttp://edoc.rki.de/oa/articles/reAsCCSPtGffk/PDF/26ieprwonbJQ.pdf
dc.identifier.urihttp://edoc.rki.de/176904/1839
dc.description.abstractThe induction of 2F5- and 4E10-like antibodies broadly neutralising HIV-1 and targeting the membrane external proximal region (MPER) of the transmembrane envelope protein gp41 would be a major advancement for the development of a preventive HIV-1 vaccine, but successful attempts remain rare. Recent studies demonstrated that broadly reactive antibodies develop relatively late during infection and after intensive affinity maturation. Therefore, a prolonged antigen delivery might be beneficial to induce them. Replicating foamy viruses which are characterised by apathogenic but persistent infection could represent suitable carrier viruses for this purpose. In order to develop such a system, we modified the accessory foamy virus Bet protein to contain the MPER of gp41, or the MPER linked to the stabilising fusion peptide proximal region of gp41 and analysed here the antigenic and immunogenic properties of such hybrid proteins. The antigens, expressed and purified to homogeneity, were recognised by the monoclonal antibodies 2F5 and 4E10 with nanomolar affinities and induced high levels of antibodies specific to gp41 after immunisation of rats. The antisera also bound to virus particles attached to infected cells, and peptide-based epitope mapping showed that they recognised the 2F5 epitope. Although no HIV-1 neutralising activity was observed, the presented data demonstrate that using the foamy virus Bet for HIV-1 epitope delivery is successfully applicable. Together with the attractive potential for sustained antigen expression after transfer to replicating virus, these results should therefore provide a first basis for the development of chimeric foamy viruses as novel HIV-1 vaccine vectors.eng
dc.language.isoeng
dc.publisherRobert Koch-Institut, Infektionskrankheiten / Erreger
dc.subjectHIV-1eng
dc.subjectVaccineeng
dc.subjectMPEReng
dc.subjectFoamy viruseng
dc.subjectBet proteineng
dc.subject.ddc610 Medizin
dc.titleImmunisation with foamy virus Bet fusion proteins as novel strategy for HIV-1 epitope delivery
dc.typeperiodicalPart
dc.identifier.urnurn:nbn:de:0257-10035854
dc.identifier.doi10.1007/s12026-013-8387-x
dc.identifier.doihttp://dx.doi.org/10.25646/1764
local.edoc.container-titleImmunologic Research
local.edoc.container-textMühle, M., Hoffmann, K., Löchelt, M., Denner, J. Immunisation with foamy virus Bet fusion proteins as novel strategy for HIV-1 epitope delivery (2013) Immunologic Research, 56 (1), pp. 61-72.
local.edoc.fp-subtypeArtikel
local.edoc.type-nameZeitschriftenartikel
local.edoc.container-typeperiodical
local.edoc.container-type-nameZeitschrift
local.edoc.container-urlhttp://link.springer.com/article/10.1007%2Fs12026-013-8387-x
local.edoc.container-publisher-nameSpringer
local.edoc.container-volume56
local.edoc.container-issue1
local.edoc.container-year2013

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