Multidonor analysis reveals structural elements, genetic determinants, and maturation pathway for HIV-1 neutralization by VRC01-class antibodies.

Multidonor analysis reveals structural elements, genetic determinants, and maturation pathway for HIV-1 neutralization by VRC01-class antibodies.
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DOI:
10.1016/j.immuni.2013.04.012
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发表时间:
2013-08-22
期刊:
影响因子:
32.4
通讯作者:
Kwong PD
Kwong PD
中科院分区:
医学1区
文献类型:
--
作者:
Zhou T;Zhu J;Wu X;Moquin S;Zhang B;Acharya P;Georgiev IS;Altae-Tran HR;Chuang GY;Joyce MG;Kwon YD;Longo NS;Louder MK;Luongo T;McKee K;Schramm CA;Skinner J;Yang Y;Yang Z;Zhang Z;Zheng A;Bonsignori M;Haynes BF;Scheid JF;Nussenzweig MC;Simek M;Burton DR;Koff WC;NISC Comparative Sequencing Program;Mullikin JC;Connors M;Shapiro L;Nabel GJ;Mascola JR;Kwong PD

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VRC 01类抗体中和HIV-1,产生于不同的HIV-1感染者,是有效HIV-1疫苗的潜在模板。然而,在>1012个抗体的每个个体中产生库的随机过程使得特异性抗体的引发不确定。在这里,我们通过晶体学和下一代测序来确定VRC 01类的个体发育。尽管抗体序列差异超过50%,但抗体-gp 120共晶体结构揭示了VRC 01类识别是非常相似的。B细胞转录物表明,VRC 01类抗体需要很少的特异性遗传元件,这表明具有VRC 01类特征的幼稚B细胞通过重组有规律地产生。然而,实际上所有这些都未能成熟,在每个供体中只有少数可能的一个祖先B细胞扩增形成VRC 01类谱系。因此,多个供体中的发育相似性揭示了VRC 01类抗体的产生原则上是可重复的,从而为在一般人群中引发相似抗体的尝试提供了框架。
Antibodies of the VRC01 class neutralize HIV-1, arise in diverse HIV-1-infected donors, and are potential templates for an effective HIV-1 vaccine. However, the stochastic processes that generate repertoires in each individual of >1012 antibodies make elicitation of specific antibodies uncertain. Here we determine the ontogeny of the VRC01 class by crystallography and next-generation sequencing. Despite antibody-sequence differences exceeding 50%, antibody-gp120 cocrystal structures reveal VRC01-class recognition to be remarkably similar. B cell transcripts indicate that VRC01-class antibodies require few specific genetic elements, suggesting that naive-B cells with VRC01-class features are generated regularly by recombination. Virtually all of these fail to mature, however, with only a few—likely one—ancestor B cell expanding to form a VRC01-class lineage in each donor. Developmental similarities in multiple donors thus reveal the generation of VRC01-class antibodies to be reproducible in principle, thereby providing a framework for attempts to elicit similar antibodies in the general population.
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