| Literature DB >> 21070847 |
Gaia Sciaranghella1, Samir K Lakhashe, Mila Ayash-Rashkovsky, Saied Mirshahidi, Nagadenahalli B Siddappa, Francis J Novembre, Vijayakumar Velu, Rama Rao Amara, Chenghui Zhou, Sufen Li, Zhongxia Li, Fred R Frankel, Ruth M Ruprecht.
Abstract
Listeria monocytogenes (Lm) is known to induce strong cellular immune responses. We constructed a live-attenuated Lm vector, Lmdd-BdopSIVgag, which encodes SIVmac239 gag. Intragastric (i.g.) administration of 3 × 10(12) bacteria to rhesus macaques was safe and induced anti-Gag cellular but no humoral immune responses. Boosting of Gag-specific cellular responses was observed after i.g. administration of Lmdd-BdopSIVgag to previously vaccinated RM despite preexisting anti-Lm immunity shown by lymphoproliferative responses. Surprisingly, anti-Lm cellular responses were also detected in non-vaccinated controls, which may reflect the fact that Lm is a ubiquitous bacterium. The novel, live-attenuated Lmdd-BdopSIVgag may be an attractive platform for oral vaccine delivery. Copyright ÂEntities:
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Year: 2010 PMID: 21070847 PMCID: PMC3039419 DOI: 10.1016/j.vaccine.2010.10.072
Source DB: PubMed Journal: Vaccine ISSN: 0264-410X Impact factor: 3.641