Guiding the long way to broad HIV neutralization.

Abstract:

PURPOSE OF REVIEW:It has been demonstrated that extensive virus diversification and antibody coevolution are necessary to give rise to broadly neutralizing antibodies targeting the envelope protein of HIV-1. Here, we discuss recent progress of vaccine design approaches aiming on strategies to initiate and guide B-cell development toward this outcome, as well as their evaluation in mouse models engineered to express human antibodies. RECENT FINDINGS:Several specially tailored transgenic mouse strains have been developed to test the concept of engaging and guiding B-cell development by sequential immunizations. Currently available models display prerearranged or nonrearranged germline or mature VDJH and VJL loci of CD4-binding-site-specific (VRC01, 3BNC60) and high-mannose-patch-specific (PGT121) broadly neutralizing antibodies, or even the complete human V(D)J segments. Data generated in these knock-in mouse models elegantly prove the feasibility of the concept when using a carefully selected panel of engineered envelope proteins. SUMMARY:Recent studies in knock-in transgenic mouse models provide a proof-of-concept that germline B-cell receptor targeting followed by sequential immunization can engage the respective naïve precursor B cells and guide B-cell receptor development toward broadly neutralizing reactivity.

journal_name

Curr Opin HIV AIDS

authors

Peterhoff D,Wagner R

doi

10.1097/COH.0000000000000356

subject

Has Abstract

pub_date

2017-05-01 00:00:00

pages

257-264

issue

3

eissn

1746-630X

issn

1746-6318

journal_volume

12

pub_type

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