Distinct conformational states of HIV-1 gp41 are recognized by neutralizing and non-neutralizing antibodies.

Distinct conformational states of HIV-1 gp41 are recognized by neutralizing and non-neutralizing antibodies.
复制标题

DOI:
10.1038/nsmb.1950
复制
发表时间:
2010-12
影响因子:
16.8
通讯作者:
--
中科院分区:
生物学1区
文献类型:
--
作者:

文献摘要

参考文献

被引文献

相似文献

HIV-1包膜糖蛋白gp 41经历大的构象变化以驱动病毒和靶细胞膜的融合,从而在病毒进入过程中表现出至少三种不同的构象。针对gp 41的中和抗体通过在融合中间状态下靶向其膜近端外部区域来阻断HIV-1感染。在这里,我们报告的生物化学和结构的证据表明,非中和抗体,能够以高亲和力结合到邻近的中和表位在膜近端区域的免疫显性片段,只有承认一个gp 41构象时,膜融合完成。我们提出,这些非中和抗体在HIV-1感染患者中由gp 41抗原以触发的融合后形式诱导,并有助于产生无效的体液应答。这些结果对基于gp 41的疫苗设计具有重要的指导意义。
HIV-1 envelope glycoprotein gp41 undergoes large conformational changes to drive fusion of viral and target cell membranes, thereby exhibiting at least three distinct conformations during the viral entry process. Neutralizing antibodies against gp41 block HIV-1 infection by targeting its membrane proximal external region in a fusion-intermediate state. Here we report biochemical and structural evidence that non-neutralizing antibodies, capable of binding with high affinity to an immunodominant segment adjacent to the neutralizing epitopes in the membrane-proximal region, only recognize a gp41 conformation when membrane fusion is complete. We propose that these non-neutralizing antibodies are induced in HIV-1 infected patients by gp41 antigens in a triggered, postfusion form and contribute to production of ineffective humoral responses. These results have important implications for gp41-based vaccine design by rational strategies.
DOI: 10.1083/jcb.140.2.315
发表时间: 1998-01-26
期刊: The Journal of cell biology
影响因子: --
作者:
Muñoz-Barroso I;Durell S;Sakaguchi K;Appella E;Blumenthal R
通讯作者: Blumenthal R
DOI: 10.1128/jvi.80.5.2515-2528.2006
发表时间: 2006-03-01
影响因子: 5.4
作者:
Moore, PL;Crooks, ET;Binley, JM
通讯作者: Binley, JM
DOI: 10.1126/science.7973652
发表时间: 1994-11-11
期刊: SCIENCE
影响因子: 56.9
作者:
BURTON, DR;PYATI, J;BARBAS, CF
通讯作者: BARBAS, CF
DOI: 10.1107/s0907444909052925
发表时间: 2010-02
期刊: Acta crystallographica. Section D, Biological crystallography
影响因子: --
作者:
Adams PD;Afonine PV;Bunkóczi G;Chen VB;Davis IW;Echols N;Headd JJ;Hung LW;Kapral GJ;Grosse-Kunstleve RW;McCoy AJ;Moriarty NW;Oeffner R;Read RJ;Richardson DC;Richardson JS;Terwilliger TC;Zwart PH
通讯作者: Zwart PH
DOI: 10.1126/science.1170481
发表时间: 2009-06-12
期刊: Science (New York, N.Y.)
影响因子: --
作者:
Aoki ST;Settembre EC;Trask SD;Greenberg HB;Harrison SC;Dormitzer PR
通讯作者: Dormitzer PR