Giulietta Saletti

International Vaccine Institute, Sŏul, Seoul, South Korea

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Publications (3)12.13 Total impact

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    ABSTRACT: The enzyme-linked immunospot (ELISPOT) assay was originally developed to enumerate antigen-specific antibody-secreting cells (ASCs), and has subsequently been adapted for various applications, including the detection cytokine-secreting cells. Owing to its exceptionally high sensitivity, the ELISPOT has proven to be especially useful for detecting discrete populations of active cells (e.g., antigen-specific cells). Because of its versatility, the ELISPOT assay is used for a wide range of applications, including clonal analyses of immune responses after vaccination or after immunotherapy. Here we describe standard protocols for the detection of human ASCs specific to virtually any vaccine antigen after enrichment of circulating plasmablasts. In addition, a protocol is described for the measurement of mucosal ASC responses after prior immunomagnetic enrichment of mucosally derived blood lymphocytes. The protocols described allow rapid (∼6-8 h) detection of specific ASCs in small (1-2 ml) samples of blood and can be performed in resource-poor settings.
    Nature Protocol 05/2013; 8(6):1073-87. · 8.36 Impact Factor
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    ABSTRACT: A randomized, double-blind, controlled clinical trial was conducted to evaluate the efficacy and safety of CJ-50300, a newly developed cell culture-derived smallpox vaccine, and to determine its minimum effective dose. The overall rates of cutaneous "take" reaction and humoral and cellular immunogenicity in CJ-50300 vaccinees were 100% (123/123), 99.2% (122/123), and 90.8% (109/120), respectively, and these rates did not differ significantly between the conventional-dose and the low-dose CJ-50300 (1.0x10(8) and 1.0x10(7) plaque-forming units/mL, respectively) (P>0.05 for each). No serious adverse reaction was observed. However, one case of possible generalized vaccinia occurred in the conventionally dosed group [ClinicalTrials.gov Identifier: NCT00607243].
    Vaccine 08/2010; 28(36):5845-9. · 3.77 Impact Factor
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    ABSTRACT: The sublingual locus has recently received great attention as a delivery site for various immunotherapies, including those that induce allergen-specific tolerance, and for vaccines that generate protective immunity. To further understand the immune functions of the human sublingual mucosa, we characterized the distribution of various immunocytes therein by immunohistochemistry. We identified professional antigen presenting cells (APCs), including Langerhans cells (LCs) and macrophages. CD1a + and langerin + LCs were further found to be distributed in the basal and supra-basal layers of the epithelium, and macrophages were identified in the lamina propria. HLA-DR + cells were observed in both the epithelium and the lamina propria, which mirrors the tissue distribution of LCs and macrophages within these tissues. CD3 + , CD4 + , and CD8 + T cells were found to be distributed along the basal layer of the epithelium and also in the lamina propria. Although B cells, plasma cells, and Foxp3 + regulatory T cells (Tregs) were only occasionally observed in the human sublingual mucosa in the absence of inflammation, they did show enrichment at inflammatory sites. Hence, we have further elucidated the immune cell component distribution in human sublingual mucosa.