Isolation of a human anti-HIV gp41 membrane proximal region neutralizing antibody by antigen-specific single B cell sorting.

Isolation of a human anti-HIV gp41 membrane proximal region neutralizing antibody by antigen-specific single B cell sorting.
复制标题

DOI:
10.1371/journal.pone.0023532
复制
发表时间:
2011
期刊:
影响因子:
3.7
通讯作者:
Haynes BF
Haynes BF
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Morris L;Chen X;Alam M;Tomaras G;Zhang R;Marshall DJ;Chen B;Parks R;Foulger A;Jaeger F;Donathan M;Bilska M;Gray ES;Abdool Karim SS;Kepler TB;Whitesides J;Montefiori D;Moody MA;Liao HX;Haynes BF

文献摘要

参考文献

被引文献

相似文献

广泛中和抗体通常不会在HIV-1感染者中产生,也不会通过实验性HIV-1疫苗产生。当这些抗体确实出现时,重要的是能够分离和表征它们,为疫苗设计提供线索。CAP 206是一种南非C亚型HIV-1感染个体,先前显示具有靶向包膜gp 41远端膜近端外部区域(MPER)的广泛中和血浆抗体。我们现在已经使用荧光肽四聚体抗原与特定的细胞分选分离的人中和单克隆抗体(mAb)的HIV-1包膜gp 41 MPER。分离的重组mAb CAP 206-CH 12利用远端MPER的一部分(HXB 2氨基酸残基,673-680)并中和对CAP 206血浆抗体敏感的HIV-1假病毒亚组。有趣的是,该mAb具有多反应性,并使用与原型广泛中和抗MPER mAb 4 E10(残基672-680)相同的种系可变重链(VH 1 -69)和可变κ轻链(VK 3 -20)基因家族。这些数据表明,在HIV-1 gp 41包膜的MPER的C-末端存在多个免疫原性靶点,并表明gp 41中和表位可能在HIV-1感染期间与一组有限的幼稚B细胞相互作用。
Broadly neutralizing antibodies are not commonly produced in HIV-1 infected individuals nor by experimental HIV-1 vaccines. When these antibodies do occur, it is important to be able to isolate and characterize them to provide clues for vaccine design. CAP206 is a South African subtype C HIV-1-infected individual previously shown to have broadly neutralizing plasma antibodies targeting the envelope gp41 distal membrane proximal external region (MPER). We have now used a fluoresceinated peptide tetramer antigen with specific cell sorting to isolate a human neutralizing monoclonal antibody (mAb) against the HIV-1 envelope gp41 MPER. The isolated recombinant mAb, CAP206-CH12, utilized a portion of the distal MPER (HXB2 amino acid residues, 673–680) and neutralized a subset of HIV-1 pseudoviruses sensitive to CAP206 plasma antibodies. Interestingly, this mAb was polyreactive and used the same germ-line variable heavy (VH1-69) and variable kappa light chain (VK3-20) gene families as the prototype broadly neutralizing anti-MPER mAb, 4E10 (residues 672–680). These data indicate that there are multiple immunogenic targets in the C-terminus of the MPER of HIV-1 gp41 envelope and suggests that gp41 neutralizing epitopes may interact with a restricted set of naive B cells during HIV-1 infection.
DOI: 10.1126/science.1111781
发表时间: 2005-06-24
期刊: SCIENCE
影响因子: 56.9
作者:
Haynes, BF;Fleming, J;Alam, SM
通讯作者: Alam, SM
DOI: 10.1128/jvi.01359-09
发表时间: 2009-11-01
影响因子: 5.4
作者:
Gray, Elin S.;Madiga, Maphuti C.;Morris, Lynn
通讯作者: Morris, Lynn
DOI: 10.1073/pnas.0506927102
发表时间: 2005-10-11
影响因子: 11.1
作者:
Miller, MD;Geleziunas, R;Pessi, A
通讯作者: Pessi, A
DOI: 10.1371/journal.pmed.0030255
发表时间: 2006-07
期刊: PLoS medicine
影响因子: 15.8
作者:
Gray ES;Meyers T;Gray G;Montefiori DC;Morris L
通讯作者: Morris L
DOI: 10.1016/j.immuni.2004.12.011
发表时间: 2005-02-01
期刊: IMMUNITY
影响因子: 32.4
作者:
Cardoso, RMF;Zwick, MB;Wilson, IA
通讯作者: Wilson, IA