HIV-1 fusion inhibitors targeting the membrane-proximal external region of Env spikes.

Abstract:

:Combination antiretroviral therapy has transformed HIV-1 infection, once a fatal illness, into a manageable chronic condition. Drug resistance, severe side effects and treatment noncompliance bring challenges to combination antiretroviral therapy implementation in clinical settings and indicate the need for additional molecular targets. Here, we have identified several small-molecule fusion inhibitors, guided by a neutralizing antibody, against an extensively studied vaccine target-the membrane proximal external region (MPER) of the HIV-1 envelope spike. These compounds specifically inhibit the HIV-1 envelope-mediated membrane fusion by blocking CD4-induced conformational changes. An NMR structure of one compound complexed with a trimeric MPER construct reveals that the compound partially inserts into a hydrophobic pocket formed exclusively by the MPER residues, thereby stabilizing its prefusion conformation. These results suggest that the MPER is a potential therapeutic target for developing fusion inhibitors and that strategies employing an antibody-guided search for novel therapeutics may be applied to other human diseases.

journal_name

Nat Chem Biol

journal_title

Nature chemical biology

authors

Xiao T,Frey G,Fu Q,Lavine CL,Scott DA,Seaman MS,Chou JJ,Chen B

doi

10.1038/s41589-020-0496-y

subject

Has Abstract

pub_date

2020-05-01 00:00:00

pages

529-537

issue

5

eissn

1552-4450

issn

1552-4469

pii

10.1038/s41589-020-0496-y

journal_volume

16

pub_type

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