1区 · 综合性期刊
ArticleOA
作者: Ward, Andrew B ; van Gils, Marit J ; Bontjer, Ilja ; Sanders, Rogier W ; Bijl, Tom P L ; Klasse, Per Johan ; Moore, John P ; Stewart, Lance J ; LaBranche, Celia ; Cottrell, Christopher A ; Schorcht, Anna ; Camacho, Miguel ; Behrens, Anna-Janina ; Montefiori, David C ; Sheffler, William ; Crispin, Max ; Catalano, Marco ; Sliepen, Kwinten ; Baker, David ; Berndsen, Zachary ; Antanasijevic, Aleksandar ; Ketas, Thomas J ; King, Neil P ; Yasmeen, Anila ; Del Moral-Sánchez, Iván ; Allen, Joel D ; Fiala, Brooke ; Bale, Jacob B ; Burger, Judith A ; Ellis, Daniel ; Brouwer, Philip J M
Abstract:The development of native-like HIV-1 envelope (Env) trimer antigens has enabled the induction of neutralizing antibody (NAb) responses against neutralization-resistant HIV-1 strains in animal models. However, NAb responses are relatively weak and narrow in specificity. Displaying antigens in a multivalent fashion on nanoparticles (NPs) is an established strategy to increase their immunogenicity. Here we present the design and characterization of two-component protein NPs displaying 20 stabilized SOSIP trimers from various HIV-1 strains. The two-component nature permits the incorporation of exclusively well-folded, native-like Env trimers into NPs that self-assemble in vitro with high efficiency. Immunization studies show that the NPs are particularly efficacious as priming immunogens, improve the quality of the Ab response over a conventional one-component nanoparticle system, and are most effective when SOSIP trimers with an apex-proximate neutralizing epitope are displayed. Their ability to enhance and shape the immunogenicity of SOSIP trimers make these NPs a promising immunogen platform.