Evidence map›Paper›PMID 20089658›Full record

ArticleJournal of virology2010

In-solution virus capture assay helps deconstruct heterogeneous antibody recognition of human immunodeficiency virus type 1.

Daniel P Leaman, Heather Kinkead, Michael B Zwick

Open access · greenAbstract read
In one paragraph

Article in Journal of virology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed
2.7field-weighted citation impact, top 9% 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

44 citing papers in PubMed, 51 citations in OpenAlex.

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  20. Molecular determinants of the ratio of inert to infectious virus particles.Progress in molecular biology and translational science · 2015
    Review
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

3 authors at 1 institution in 1 country.

Daniel P LeamanDepartment of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, CA 92037, USA.
Heather Kinkead
Michael B Zwick
Scripps Research Institute · US

Funding

INTERDISCIPLINARY TRAINING PROGRAM IN IMMUNOLOGYT32AI007606 · NIAID · SCRIPPS RESEARCH INSTITUTE, THE · PI NEMAZEE, DAVID · 1999 to 2013
$2.1M
Engineering and sorting HIV-1 display Env libraries for vaccine designR21AI077381 · NIAID · SCRIPPS RESEARCH INSTITUTE, THE · PI ZWICK, MICHAEL B · 2008 to 2009
$517k
NIAID NIH HHS R21 AI077381NIAID NIH HHS T32 AI007606
6 · The paper itself

Abstract

Human immunodeficiency virus type 1 (HIV-1) envelope glycoprotein (Env) on whole virions is heterogeneous, so molecular analysis of Env with monoclonal antibodies (MAbs) is challenging. Virus capture assays (VCAs) involving immobilized MAbs are typically used, but these assays suffer from immobilization artifacts and do not provide binding constants. Furthermore, we show here that certain HIV-1 neutralizing MAbs, including 2G12, 4E10, 2F5, Z13e1, and D5, will capture virion particles completely devoid of Env. We modified the VCA such that MAbs and virions are incubated in solution, and unbound MAbs are removed prior to the capture step. This modification nearly eliminated evidence of Env-independent binding by MAbs to virions and allowed determination of apparent affinity constants in solution. Three important qualitative observations were further revealed. First, neutralizing MAbs 2F5, 4E10, and Z13e1 against the membrane-proximal external region (MPER) of HIV-1 gp41 were found to capture virions efficiently only if a significant amount of uncleaved gp160 or synthetic MPER peptide was present. Second, we show how non-native forms of Env vary by Env genotype and that Env from HIV-1(JR-FL) is more homogeneously trimeric than that from HIV-1(JR-CSF). Third, we determined that Env containing all or parts of gp41, including uncleaved gp160, binds spontaneously to free virions. This exogenous Env is an indiscriminate molecular "bridge" between Env-specific Ab and virions and can affect VCA analyses, particularly using pseudotyped virions. Heterogeneity in Env from endogenous and exogenous sources might also subvert humoral immunity to HIV-1, so in-solution VCAs may help to dissect this heterogeneity for vaccine design purposes.

Indexed as

AIDS VaccinesAntibodies, MonoclonalCell Lineenv Gene Products, Human Immunodeficiency VirusEnzyme-Linked Immunosorbent AssayHIV-1HIV Envelope Protein gp41HumansVirionAIDS VaccinesAntibodies, Monoclonalenv Gene Products, Human Immunodeficiency Virusgp140 envelope protein, Human immunodeficiency virus 1gp41 protein, Human immunodeficiency virus 1HIV Envelope Protein gp41

Identifiers

PMID20089658
PMCPMC2838137
OpenAlexW2164079708

What OpenQuestion holds

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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.