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In vitro correlates of HIV-2-mediated HIV-1 protection

机译:HIV-2介导的HIV-1保护的体外相关性

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A prospective study of high-risk commercial sex workers in Senegal has shown that HIV-2 infection may reduce the risk of subsequent HIV-1 infection; these findings have been confirmed and extended, now with 13 years of observation. While exploring the biological mechanisms behind this natural protection, we found that a significant proportion of peripheral blood mononuclear cells ob- tained from HIV-2-infected subjects resisted in vitro challenge with CCRS-dependent HIV-1 viruses but not CXCR4-dependent viruses. High levels of β-chemokines, the natural ligands of the CCR5 coreceptor, were correlated with low levels of viral replication, and resistance was abrogated by antibodies to β-chemokines. Our results suggest that β-chemokine-mediated resistance may be an important correlate of HIV protection against HIV-1 infection and relevant to HIV vaccine design.
机译:对塞内加尔高风险商业性工作者的一项前瞻性研究表明,HIV-2感染可能会降低随后感染HIV-1的风险;这些发现已经得到确认和扩展,目前已有13年的观察期。在探索这种自然保护背后的生物学机制的同时,我们发现从受HIV-2感染的受试者获得的外周血单核细胞中,有相当一部分抵抗了CCRS依赖性HIV-1病毒而不是CXCR4依赖性病毒的体外攻击。高水平的β-趋化因子(CCR5共受体的天然配体)与低水平的病毒复制相关,并且抗β-趋化因子的抗体消除了耐药性。我们的结果表明,β-趋化因子介导的耐药性可能是HIV抵抗HIV-1感染的重要保护因素,并且与HIV疫苗设计有关。

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