کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2408460 1103175 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Analysis of the exposure of induced HIV glycoprotein epitopes in a potential HIV pseudovirion vaccine
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری ایمنی شناسی و میکروب شناسی ایمونولوژی
پیش نمایش صفحه اول مقاله
Analysis of the exposure of induced HIV glycoprotein epitopes in a potential HIV pseudovirion vaccine
چکیده انگلیسی

Functionally conserved HIV-Env epitopes, which are induced during the process of Env-mediated membrane fusion, represent interesting immunogens, which may elicit broad neutralising antibody responses. In this report, we analyse a pseudovirion (PV)-based HIV vaccine preparation, potentially enriched in such induced Env-conformations. The vaccine has been prepared by mixing and incubating Env-PVs, with incorporated fusion-defective Env, with PVs, which have incorporated functional CD4 and CXCR4 proteins. Here, we demonstrate that three different monoclonal antibodies (CG10, 17b and 48d), recognising a region of gp120 overlapping with the coreceptor binding site, and a further antibody, 8F101, recognising a CD4-induced epitope outside of the coreceptor site, bind to Env molecules in the putative PV vaccine mixture but not at all, or less strongly, to native Env-PVs. In all cases, antibody binding required an interaction of the Env-PVs with CD4 whereas CXCR4 was dispensible. These results confirm that in the PV vaccine preparation, CD4-induced Env epitopes are accessible and that these, as well as other induced epitopes “downstream” from CD4 binding, may function as immunogens to elicit potentially cross-neutralising humoral immune responses.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vaccine - Volume 25, Issue 12, 8 March 2007, Pages 2161–2167
نویسندگان
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