Evidence map›Paper›PMID 22989877›Full record

ArticleThe Journal of biological chemistry2012

A small-molecule screen yields idiotype-specific blockers of neuromyelitis optica immunoglobulin G binding to aquaporin-4.

Puay-Wah Phuan, Marc O Anderson, Lukmanee Tradtrantip, Hua Zhang, Joseph Tan, Chiwah Lam, Jeffrey L Bennett, A S Verkman

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
1.6field-weighted citation impact, top 17% 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

7 citing papers in PubMed, 14 citations in OpenAlex.

  1. Review
  2. Article
  3. Review
  4. Review
  5. Review
  6. Review
  7. Immunology of neuromyelitis optica: a T cell-B cell collaboration.Annals of the New York Academy of Sciences · 2013
    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

8 authors at 3 institutions in 1 country.

Puay-Wah PhuanDepartment of Medicine, University of California, San Francisco, California 94143-0521, USA.
Marc O Anderson
Lukmanee Tradtrantip
Hua Zhang
Joseph Tan
Chiwah Lam
Jeffrey L Bennett
A S Verkman
University of California, San Francisco · USUniversity of Colorado Denver · USSan Francisco State University · US

Funding

SynthesisP30DK072517 · NIDDK · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI VERKMAN, ALAN S · 2005 to 2022
$18.1M
Functional Role of Aquaporins in Eye PhysiologyR01EY013574 · NEI · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI VERKMAN, ALAN S · 2002 to 2022
$7.6M
MECHANISMS OF WATER TRANSPORT IN RENAL EPITHELIAR37DK035124 · NIDDK · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI VERKMAN, ALAN S · 1999 to 2008
$4.2M
Application of Novel Optical Methods to Cell DynamicsR37EB000415 · NIBIB · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI VERKMAN, ALAN S · 2007 to 2016
$4.1M
Role of ASL and Airway Glands in CF Lung DiseaseR01HL073856 · NHLBI · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI VERKMAN, ALAN S · 2003 to 2010
$3.1M
Application of Novel Optical Methods to Cell DynamicsR01EB000415 · NIBIB · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI VERKMAN, ALAN S · 2002 to 2006
$1.7M
WATER AND NON-ELECTROLYTE TRANSPORT IN RENAL VESICLESR01DK035124 · NIDDK · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI VERKMAN, ALAN S · 1986 to 2014
$1.4M
CFTR inhibitors for therapy of polycystic kidney diseaseRC1DK086125 · NIDDK · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI VERKMAN, ALAN S · 2009 to 2010
$989k
NEI NIH HHS EY13574NEI NIH HHS R01 EY013574NHLBI NIH HHS HL73856NHLBI NIH HHS R01 HL073856NIBIB NIH HHS EB00415NIBIB NIH HHS R01 EB000415NIBIB NIH HHS R37 EB000415NIDDK NIH HHS DK35124NIDDK NIH HHS DK72517NIDDK NIH HHS DK86125NIDDK NIH HHS P30 DK072517NIDDK NIH HHS R01 DK035124NIDDK NIH HHS R37 DK035124NIDDK NIH HHS RC1 DK086125
6 · The paper itself

Abstract

Neuromyelitis optica (NMO) is an inflammatory demyelinating disease of the central nervous system caused by binding of anti-aquaporin-4 (AQP4) autoantibodies (NMO-IgG) to AQP4 on astrocytes. A screen was developed to identify inhibitors of NMO-IgG-dependent, complement-dependent cytotoxicity. Screening of 50,000 synthetic small molecules was done using CHO cells expressing human AQP4 and a human NMO recombinant monoclonal antibody (rAb-53). The screen yielded pyrano[2,3-c]pyrazoles that blocked rAb-53 binding to AQP4 and prevented cytotoxicity in cell culture and spinal cord slice models of NMO. Structure-activity analysis of 82 analogs yielded a blocker with IC(50) ∼ 6 μm. Analysis of the blocker mechanism indicated idiotype specificity, as (i) pyrano[2,3-c]pyrazoles did not prevent AQP4 binding or cytotoxicity of other NMO-IgGs, and (ii) surface plasmon resonance showed specific rAb-53 binding. Antibody structure modeling and docking suggested a putative binding site near the complementarity-determining regions. Small molecules with idiotype-specific antibody targeting may be useful as research tools and therapeutics.

Indexed as

AnimalsAntibody-Dependent Cell CytotoxicityAquaporin 4AutoantibodiesBinding SitesCHO CellsCricetinaeHigh-Throughput Screening AssaysHumansImmunoglobulin GImmunoglobulin IdiotypesMiceMice, KnockoutMolecular Docking SimulationNeuromyelitis OpticaProtein BindingAQP4 protein, humanAquaporin 4AutoantibodiesImmunoglobulin GImmunoglobulin IdiotypesPyransPyrazoles

Identifiers

PMID22989877
PMCPMC3481286
OpenAlexW2083434189

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.