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首页> 外文期刊>Cellular immunology >Induction of primary anti-HIV CD4 and CD8 T cell responses by dendritic cells transduced with self-inactivating lentiviral vectors
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Induction of primary anti-HIV CD4 and CD8 T cell responses by dendritic cells transduced with self-inactivating lentiviral vectors

机译:自灭活慢病毒载体转导的树突状细胞诱导原发性抗HIV CD4和CD8 T细胞反应

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摘要

In this study, we demonstrate that a minimal self-inactivating (SIN) lentiviral vector (LV) that does not encode any human immunodeficiency virus (HIV) genes is able to induce HIV-specific CD4 and CD8 T cell responses after transduction of dendritic cells (DCs). The LV-DC-primed T cells displayed HIV-specific lytic degranulation, as illustrated by acquisition of CD107a/b expression on the cell surface and up-regulation of active caspase 3. HIV-specific cytotoxic T lymphocyte (CTL) response was consistently detected using different assays, and T cell receptors specific to three prominent HIV epitopes, SL9 (Gag peptide: SLYNTVATL), IV9 (Pol peptide: ILKEPVHGV), and MA 10 (In peptide: MASDFNLPPV) were detected using HLA-A0201 peptide-tetramers. These results demonstrate that DCs transduced with the minimal SIN-LV can efficiently induce HIV-specific CD4 and CD8 T cell responses. Since LVs are popular gene transfer tools, our results have fundamental implications for future LV applications and DC vaccine development. (c) 2006 Elsevier Inc. All rights reserved.
机译:在这项研究中,我们证明了不编码任何人类免疫缺陷病毒(HIV)基因的最小自我灭活(SIN)慢​​病毒载体(LV)能够在树突状细胞转导后诱导HIV特异性CD4和CD8 T细胞反应(DC)。 LV-DC引发的T细胞显示出HIV特异性的溶解性脱颗粒,如细胞表面CD107a / b表达的获得和活性胱天蛋白酶3的上调所说明的那样,始终检测到HIV特异性的细胞毒性T淋巴细胞(CTL)反应使用不同的分析方法,使用HLA-A0201肽-四聚体检测到对三个突出的HIV表位有特异性的T细胞受体SL9(Gag肽:SLYNTVATL),IV9(Pol肽:ILKEPVHGV)和MA 10(In肽:MASDFNLPPV)。这些结果表明,以最小的SIN-LV转导的DC可以有效诱导HIV特异性CD4和CD8 T细胞反应。由于LV是流行的基因转移工具,因此我们的结果对未来的LV应用和DC疫苗开发具有根本意义。 (c)2006 Elsevier Inc.保留所有权利。

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