Evidence map›Paper›PMID 25072845›Full record

ArticleBioconjugate chemistry2014

A bifunctional converter: fluorescein quenching scFv/fluorogen activating protein for photostability and improved signal to noise in fluorescence experiments.

Matthew J Saunders, Ethan Block, Alexander Sorkin, Alan S Waggoner, Marcel P Bruchez

Abstract read
In one paragraph

Article in Bioconjugate chemistry, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
3.3field-weighted citation impact, top 8% 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

10 citing papers in PubMed, 15 citations in OpenAlex.

  1. Article
  2. Article
  3. A proof-of-concept study on the use of a fluorescein-basedEJNMMI radiopharmacy and chemistry · 2022
    Article
  4. Article
  5. Article
  6. Article
  7. Spectral fine tuning of cyanine dyes: electron donor-acceptor substituted analogues of thiazole orange.Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology · 2015
    Article
  8. Dark dyes-bright complexes: fluorogenic protein labeling.Current opinion in chemical biology · 2015
    Review
  9. Review
  10. Article
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.

Matthew J SaundersMolecular Biosensor and Imaging Center, §Department of Biological Sciences, ∥Department of Chemistry, Carnegie-Mellon University , Pittsburgh, Pennsylvania 15213, United States.
Ethan Block
Alexander Sorkin
Alan S Waggoner
Marcel P Bruchez
University of Pittsburgh · US

Funding

Regulation of Dopamine Transporter by TraffickingR01DA014204 · NIDA · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI ALEXANDER D SORKIN · 2001 to 2026
$8.3M
Fluorescent Biosensors for Networks and PathwaysU54GM103529 · NIGMS · CARNEGIE-MELLON UNIVERSITY · PI WAGGONER, ALAN S. · 2012 to 2013
$6.3M
Regulation of protein kinase C-mediated dopamine transporter endocytosis in vivoF32DA034408 · NIDA · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI BLOCK, ETHAN ROBERT · 2013 to 2013
$54k
NIDA NIH HHS DA014204NIDA NIH HHS F32 DA034408NIDA NIH HHS F32DA034408NIDA NIH HHS R01 DA014204NIGMS NIH HHS U54 GM103529NIGMS NIH HHS U54GM103529
6 · The paper itself

Abstract

Monoclonal antibodies are one of the most useful and ubiquitous affinity reagents used in the biological sciences. Immunostaining of fixed and live cells for microscopy or cytometry measurements frequently employs fluorescently labeled antibodies, in particular fluorescein-labeled antibodies. This dye emits light at a wavelength overlapping with cellular autofluorescence, making it difficult to measure antibody binding to proteins of relatively low copy number or in cells of high green autofluorescence. A number of high affinity fluorescein binding antibodies and antibody domains have been developed that quench the dye's fluorescence. Using a fluorescein-binding recombinant antibody domain genetically fused to a fluorogen activating protein (FAP), we demonstrate a molecular converter capable of binding and quenching fluorescein, while binding and activating a fluorogenic triarylmethane dye. This reagent converts fluorescein conjugates to far-red fluorescent probes, where cellular autofluorescence is low, improving signal-to-background of cell-based antibody binding measurements by ∼7-fold. Microscopy experiments show colocalization of both fluorescein and MG fluorescence. This dual affinity fluorescein-quenching-FAP can also be used to convert fluorescein to the red fluorescing MG fluorogen on biological molecules other than antibodies.

Indexed as

LightAmino Acid SequenceAnimalsBiotinCHO CellsCricetinaeCricetulusDextransDrug StabilityFluoresceinFluorescent DyesHEK293 CellsHumansPhotobleachingPolyethylene GlycolsRecombinant Fusion ProteinsBiotinDextransFluoresceinFluorescent DyesPolyethylene GlycolsRecombinant Fusion ProteinsSingle-Chain Antibodies

Identifiers

PMID25072845
PMCPMC4140548
OpenAlexW2028098643

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.