کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10969511 | 1102965 | 2010 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
In vivo electroporation enhances the potency of poly-lactide co-glycolide (PLG) plasmid DNA immunization
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
ایمنی شناسی و میکروب شناسی
ایمونولوژی
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چکیده انگلیسی
Immunization with plasmid DNA that has been encapsulated in poly lactide-co-glycolide (PLG) microparticles targets the plasmid DNA to antigen presenting cells and elicits immune responses to the encoded antigen(s). Application of a series of electrical pulses (EPT) immediately following unformulated DNA injection enhances expression of the encoded antigen and increases immune responses. The combination of using EPT before or after PLG-encapsulated plasmid DNA immunization was tested to determine if enhanced immune responses would be generated. The results show that the combination lead to both enhanced expression of antigen and more robust T cell responses, even if EPT was applied prior to immunization. The data also demonstrate that recruitment of phagocytes to the injection site was markedly enhanced by EPT, and this resulted in an increase of the antigen expression levels in these cells. Co-administration of microparticles and EPT also effected localized necrosis of muscle fibers, caused persistent Th-1-modulated cytokine production, and lead to the release of two endogenous adjuvants, uric acid and HMGB1. In all, we describe that increased immunogenicity observed with the combination of PLG-encapsulated plasmid DNA microparticle with EPT was caused by an increase in the recruitment of antigen presenting cells which mediated a more robust T cell response than observed with immunization alone.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vaccine - Volume 28, Issue 50, 23 November 2010, Pages 7852-7864
Journal: Vaccine - Volume 28, Issue 50, 23 November 2010, Pages 7852-7864
نویسندگان
Christine M. Barbon, Lisa Baker, Christa Lajoie, Urban Ramstedt, Mary Lynne Hedley, Thomas M. Luby,