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在慢性1型人类免疫缺陷病毒感染中,补偿性突变部分恢复了适应性,并延缓了免疫显性的HLA-B*5703限制性Gag表位内逃逸突变的回复。

Compensatory mutation partially restores fitness and delays reversion of escape mutation within the immunodominant HLA-B*5703-restricted Gag epitope in chronic human immunodeficiency virus type 1 infection.

作者信息

Crawford Hayley, Prado Julia G, Leslie Alasdair, Hué Stéphane, Honeyborne Isobella, Reddy Sharon, van der Stok Mary, Mncube Zenele, Brander Christian, Rousseau Christine, Mullins James I, Kaslow Richard, Goepfert Paul, Allen Susan, Hunter Eric, Mulenga Joseph, Kiepiela Photini, Walker Bruce D, Goulder Philip J R

机构信息

Department of Pediatrics, University of Oxford, Peter Medawar Building for Pathogen Research, South Parks Rd., Oxford OX1 3SY, United Kingdom.

出版信息

J Virol. 2007 Aug;81(15):8346-51. doi: 10.1128/JVI.00465-07. Epub 2007 May 16.

Abstract

HLA-B5703 is associated with effective immune control in human immunodeficiency virus type 1 (HIV-1) infection. Here we describe an escape mutation within the immunodominant HLA-B5703-restricted epitope in chronic HIV-1 infection, KAFSPEVIPMF (Gag 162-172), and demonstrate that this mutation reduces viral replicative capacity. Reversion of this mutation following transmission to HLA-B5703-negative recipients was delayed by the compensatory mutation S165N within the same epitope. These data may help explain the observed association between HLA-B5703 and long-term control of viremia.

摘要

HLA - B5703与1型人类免疫缺陷病毒(HIV - 1)感染中的有效免疫控制相关。在此,我们描述了慢性HIV - 1感染中免疫显性的HLA - B5703限制性表位KAFSPEVIPMF(Gag 162 - 172)内的一个逃逸突变,并证明该突变降低了病毒复制能力。在传播给HLA - B5703阴性受者后,同一表位内的补偿性突变S165N延迟了该突变的回复。这些数据可能有助于解释观察到的HLA - B5703与病毒血症长期控制之间的关联。

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