Direct Probing of Germinal Center Responses Reveals Immunological Features and Bottlenecks for Neutralizing Antibody Responses to HIV Env Trimer

Colin Havenar-Daughton, Diane G. Carnathan, Alba Torrents de la Peña, Matthias Pauthner, Bryan Briney, Samantha M. Reiss, Jennifer S. Wood, Kirti Kaushik, Marit J. van Gils, Sandy L. Rosales, Patricia van der Woude, Michela Locci, Khoa M. Le, Steven W. de Taeye, Devin Sok, Ata Ur Rasheed Mohammed, Jessica Huang, Sanjeev Gumber, AnaPatricia Garcia, Sudhir P. KasturiBali Pulendran, John P. Moore, Rafi Ahmed, Grégory Seumois, Dennis R. Burton, Rogier W. Sanders, Guido Silvestri, Shane Crotty

Research output: Contribution to journalArticleAcademicpeer-review

128 Citations (Scopus)

Abstract

Generating tier 2 HIV-neutralizing antibody (nAb) responses by immunization remains a challenging problem, and the immunological barriers to induction of such responses with Env immunogens remain unclear. Here, some rhesus monkeys developed autologous tier 2 nAbs upon HIV Env trimer immunization (SOSIP.v5.2) whereas others did not. This was not because HIV Env trimers were immunologically silent because all monkeys made similar ELISA-binding antibody responses; the key difference was nAb versus non-nAb responses. We explored the immunological barriers to HIV nAb responses by combining a suite of techniques, including longitudinal lymph node fine needle aspirates. Unexpectedly, nAb development best correlated with booster immunization GC B cell magnitude and Tfh characteristics of the Env-specific CD4 T cells. Notably, these factors distinguished between successful and unsuccessful antibody responses because GC B cell frequencies and stoichiometry to GC Tfh cells correlated with nAb development, but did not correlate with total Env Ab binding titers
Original languageEnglish
Pages (from-to)2195-2209
JournalCell reports
Volume17
Issue number9
DOIs
Publication statusPublished - 2016

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