Evidence map›Paper›PMID 28978711›Full record

ArticleJournal of virology2017

Functional Stability of HIV-1 Envelope Trimer Affects Accessibility to Broadly Neutralizing Antibodies at Its Apex.

Syna Kuriakose Gift, Daniel P Leaman, Lei Zhang, Arthur S Kim, Michael B Zwick

Open access · bronzeAbstract read
In one paragraph

Article in Journal of virology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
1.0field-weighted citation impact, top 27% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

19 citing papers in PubMed, 26 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Syna Kuriakose GiftDepartment of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, California, USA.
Daniel P LeamanDepartment of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, California, USA.
Lei ZhangDepartment of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, California, USA.
Arthur S KimDepartment of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, California, USA.
Michael B ZwickDepartment of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, California, USA zwick@scripps.edu.
Scripps Research Institute · US

Funding

Selecting HIV recombination libraries for stable Env trimer immunogensR01AI098602 · NIAID · SCRIPPS RESEARCH INSTITUTE, THE · PI ZWICK, MICHAEL B · 2012 to 2016
$2.6M
Engineering and sorting HIV-1 display Env libraries for vaccine designR33AI077381 · NIAID · SCRIPPS RESEARCH INSTITUTE, THE · PI ZWICK, MICHAEL B · 2011 to 2013
$1.7M
NIAID NIH HHS R01 AI098602NIAID NIH HHS R33 AI077381
6 · The paper itself

Abstract

The trimeric envelope glycoprotein spike (Env) of HIV-1 is the target of vaccine development to elicit broadly neutralizing antibodies (bnAbs). Env trimer instability and heterogeneity in principle make subunit interfaces inconsistent targets for the immune response. Here, we investigate how functional stability of Env relates to neutralization sensitivity to V2 bnAbs and V3 crown antibodies that engage subunit interfaces upon binding to unliganded Env. Env heterogeneity was inferred when antibodies neutralized a mutant Env with a plateau of less than 100% neutralization. A statistically significant correlation was found between the stability of mutant Envs and the MPN of V2 bnAb, PG9, as well as an inverse correlation between stability of Env and neutralization by V3 crown antibody, 447-52D. A number of Env-stabilizing mutations and V2 bnAb-enhancing mutations were identified in Env, but they did not always overlap, indicating distinct requirements of functional stabilization versus antibody recognition. Blocking complex glycosylation of Env affected V2 bnAb recognition, as previously described, but also notably increased functional stability of Env. This study shows how instability and heterogeneity affect antibody sensitivity of HIV-1 Env, which is relevant to vaccine design involving its dynamic apex.

Indexed as

Protein StabilityAntibodies, Neutralizingenv Gene Products, Human Immunodeficiency VirusEpitopesGlycosylationHIV-1HIV AntibodiesHIV Envelope Protein gp120HumansMutationPeptide FragmentsProtein BindingAntibodies, Neutralizingenv Gene Products, Human Immunodeficiency VirusEpitopesHIV AntibodiesHIV Envelope Protein gp120HIV envelope protein gp120 (305-321)Peptide Fragmentsenvelopegp120gp41human immunodeficiency virusneutralizing antibodiesprotein stabilityvaccines

Identifiers

PMID28978711
PMCPMC5709597
OpenAlexW2761329555

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.