Evidence map›Paper›PMID 31937648›Full record

ArticlemBio2020

A Bispecific Antibody That Simultaneously Recognizes the V2- and V3-Glycan Epitopes of the HIV-1 Envelope Glycoprotein Is Broader and More Potent than Its Parental Antibodies.

Meredith E Davis-Gardner, Barnett Alfant, Jesse A Weber, Matthew R Gardner, Michael Farzan

Open access · goldAbstract read
In one paragraph

Article in mBio, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
3.6field-weighted citation impact, top 6% 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

20 citing papers in PubMed, 1 synthesis or guideline pooled it, 30 citations in OpenAlex.

  1. Pooled it
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  4. Bispecific antibodies targeting two glycoproteins on SFTSV exhibit synergistic neutralization and protection in a mouse model.Proceedings of the National Academy of Sciences of the United States of America · 2024
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  10. In vitro affinity maturation of broader and more-potent variants of the HIV-1-neutralizing antibody CAP256-VRC26.25.Proceedings of the National Academy of Sciences of the United States of America · 2021
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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.

Meredith E Davis-GardnerDepartment of Microbiology and Immunology, The Scripps Research Institute, Jupiter, Florida, USA.ORCID 0000-0002-6133-3613
Barnett AlfantDepartment of Microbiology and Immunology, The Scripps Research Institute, Jupiter, Florida, USA.
Jesse A WeberDepartment of Microbiology and Immunology, The Scripps Research Institute, Jupiter, Florida, USA.
Matthew R GardnerDepartment of Microbiology and Immunology, The Scripps Research Institute, Jupiter, Florida, USA.ORCID 0000-0003-2872-7597
Michael FarzanDepartment of Microbiology and Immunology, The Scripps Research Institute, Jupiter, Florida, USA mfarzan@scripps.edu.ORCID 0000-0002-2990-5319
Scripps Research Institute · US

Funding

Cell and Gene Therapy for HIV CureUM1AI126623 · NIAID · FRED HUTCHINSON CANCER RESEARCH CENTER · PI JEROME, KEITH R, KIEM, HANS-PETER · 2016 to 2020
$24.2M
Therapeutic Use of an Enhanced Form of CD4-IgR37AI091476 · NIAID · UNIVERSITY OF FLORIDA · PI FARZAN, MICHAEL R. · 2016 to 2025
$9.2M
Optimizing eCD4-Ig for eradication and a functional cureR01AI129868 · NIAID · UNIVERSITY OF FLORIDA · PI FARZAN, MICHAEL R. · 2017 to 2021
$5.2M
A safety switch for an effective HIV-1 vaccineDP1DA043912 · NIDA · SCRIPPS FLORIDA · PI FARZAN, MICHAEL R. · 2017 to 2021
$4.8M
NIAID NIH HHS R01 AI129868NIAID NIH HHS R37 AI091476NIAID NIH HHS UM1 AI126623NIDA NIH HHS DP1 DA043912
6 · The paper itself

Abstract

Broadly neutralizing antibodies (bNAbs) can prevent and control an HIV-1 infection, but their breadth is invariably too limited for use as monotherapy. To address this problem, bi- and trispecific antibody-like constructs have been developed. These engineered antibodies typically have greater breadth than the native bNAbs from which they were derived, but they are not more potent because they do not, in most cases, simultaneously engage more than a single epitope of the HIV-1 envelope glycoprotein (Env). Here, we describe a new class of bispecific antibodies targeting the V2-glycan (apex) and V3-glycan regions of the HIV-1 envelope glycoprotein (Env). Specifically, bispecific antibodies with a single-chain (scFv) form of the CAP256.VRC26.25 V2-glycan (apex) antibody on one antibody arm and a full V3-glycan Fab on the other arm neutralizes more HIV-1 isolates than the bNAbs from which they were derived. Moreover, these bispecific antibodies are markedly more potent than their parental bNAbs, likely because they simultaneously engage both the apex and V3-glycan epitopes of Env. Our data show that simultaneous engagement of two critical epitopes of a single Env trimer can markedly increase the potency of a bispecific antibody.

Indexed as

Antibodies, BispecificAntibodies, NeutralizingBinding Sites, AntibodyCell Lineenv Gene Products, Human Immunodeficiency VirusEpitopesHIV-1HIV AntibodiesHIV InfectionsHumansNeutralization TestsSingle-Chain AntibodiesAntibodies, BispecificAntibodies, Neutralizingenv Gene Products, Human Immunodeficiency VirusEpitopesHIV AntibodiesSingle-Chain Antibodiesantibody neutralizationbispecific antibodiesbroadly neutralizing antibodieshuman immunodeficiency virushuman immunodeficiency virus 1

Identifiers

PMID31937648
PMCPMC6960291
OpenAlexW2998925601

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.