Immunization for HIV-1 Broadly Neutralizing Antibodies in Human Ig Knockin Mice

Pia Dosenovic, Lotta Von Boehmer, Amelia Escolano, Joseph Jardine, Natalia T. Freund, Alexander D. Gitlin, Andrew T. McGuire, Daniel W. Kulp, Thiago Oliveira, Louise Scharf, John Pietzsch, Matthew D. Gray, Albert Cupo, Marit J. Van Gils, Kai Hui Yao, Cassie Liu, Anna Gazumyan, Michael S. Seaman, Pamela J. Björkman, Rogier W. SandersJohn P. Moore, Leonidas Stamatatos, William R. Schief*, Michel C. Nussenzweig

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Summary A subset of individuals infected with HIV-1 develops broadly neutralizing antibodies (bNAbs) that can prevent infection, but it has not yet been possible to elicit these antibodies by immunization. To systematically explore how immunization might be tailored to produce them, we generated mice expressing the predicted germline or mature heavy chains of a potent bNAb to the CD4 binding site (CD4bs) on the HIV-1 envelope glycoprotein (Env). Immunogens specifically designed to activate B cells bearing germline antibodies are required to initiate immune responses, but they do not elicit bNAbs. In contrast, native-like Env trimers fail to activate B cells expressing germline antibodies but elicit bNAbs by selecting for a restricted group of light chains bearing specific somatic mutations that enhance neutralizing activity. The data suggest that vaccination to elicit anti-HIV-1 antibodies will require immunization with a succession of related immunogens.

Original languageEnglish
Pages (from-to)1505-1515
Number of pages11
JournalCell
Volume161
Issue number7
DOIs
StatePublished - 20 Jun 2015
Externally publishedYes

Fingerprint

Dive into the research topics of 'Immunization for HIV-1 Broadly Neutralizing Antibodies in Human Ig Knockin Mice'. Together they form a unique fingerprint.

Cite this