کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
3415990 1224986 2008 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Identification and characterization of HLA-B*5401-restricted HIV-1-Nef and Pol-specific CTL epitopes
موضوعات مرتبط
علوم زیستی و بیوفناوری ایمنی شناسی و میکروب شناسی ایمونولوژی
پیش نمایش صفحه اول مقاله
Identification and characterization of HLA-B*5401-restricted HIV-1-Nef and Pol-specific CTL epitopes
چکیده انگلیسی

The identification of HIV-1 cytotoxic T lymphocyte (CTL) epitopes presented by each HLA allele and the characterization of their CTL responses are important for the study of pathogenesis of AIDS and the development of a vaccine against it. In the present study, we focused on identification and characterization of HIV-1 epitopes presented by HLA-B*5401, which is frequently found in the Asian population, because these epitopes have not yet been reported. We identified these epitopes by using 17-mer overlapping peptides derived from HIV-1 Gag, Pol, and Nef. Seven of these 17-mer peptides induced HLA-B*5401-restricted CD8+ T cell responses. Only five HLA-B*5401-restricted Pol- or Nef-specific CD8+ T cell responses were detected in the analysis using 11-mer overlapping peptides. Three Pol and two Nef optimal peptides were identified by further analysis using truncated peptides. These epitope-specific CTLs effectively killed HLA-B*5401-expressing target cells infected with HIV-1 recombinant vaccinia virus, indicating that these peptides were naturally processed by HLA-B*5401 in HIV-1-infected cells. These epitope-specific CD8+ T cells were elicited in more than 25% of chronically HIV-1-infected individuals carrying HLA-B*5401. Therefore, these epitopes should prove useful for studying the pathogenesis of AIDS in Asia and developing a vaccine against HIV-1.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microbes and Infection - Volume 10, Issue 7, June 2008, Pages 764–772
نویسندگان
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