Evidence map›Paper›PMID 22230285›Full record

ArticleAnalytical biochemistry2012

A quantitative continuous enzyme assay of intramolecularly quenched fluorogenic phospholipase substrates for molecular imaging.

Theresa M Mawn, Anatoliy V Popov, E James Delikatny

Abstract read
In one paragraph

Article in Analytical biochemistry, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.9field-weighted citation impact, top 25% 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

6 citing papers in PubMed, 9 citations in OpenAlex.

  1. Article
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  5. 1,7-Bis-(Materials (Basel, Switzerland) · 2014
    Article
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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

3 authors at 1 institution in 1 country.

Theresa M MawnDepartment of Radiology, University of Pennsylvania, Philadelphia, PA 19104, USA.
Anatoliy V Popov
E James Delikatny
University of Pennsylvania · US

Funding

WORKSHOP ON ADVANCES IN MUSCULOSKELETAL MRIP41RR002305 · NCRR · UNIVERSITY OF PENNSYLVANIA · PI SONG, HEE KWON · 1985 to 2011
$14.7M
SMALL ANIMAL MULTIMODALITY IMAGING CENTER (SAMMIC)R24CA083105 · NCI · UNIVERSITY OF PENNSYLVANIA · PI GLICKSON, JERRY D · 1999 to 2003
$2.2M
Penn Small Animal Imaging Resource (Penn-SAIR)U24CA083105 · NCI · UNIVERSITY OF PENNSYLVANIA · PI CHODOSH, LEWIS A, GLICKSON, JERRY D · 2007 to 2011
$2.1M
NMR detection of tumor differentiationR01CA114347 · NCI · UNIVERSITY OF PENNSYLVANIA · PI DELIKATNY, EDWARD J · 2005 to 2009
$1.2M
NMR and NIR Detection of Phospholipase Activity In VivoR01CA129176 · NCI · UNIVERSITY OF PENNSYLVANIA · PI DELIKATNY, EDWARD J · 2009 to 2012
$1.1M
NCI NIH HHS R01 CA114347NCI NIH HHS R01 CA129176NCI NIH HHS R24 CA083105NCI NIH HHS R24 CA83105NCI NIH HHS U24 CA083105NCRR NIH HHS P41 RR002305
6 · The paper itself

Abstract

There has been recent growth in the development of activatable near-infrared (NIR) fluorescent probes for molecular imaging, generally designed by placing fluorochromes on a cleavable substrate in close proximity to one another, such that they self-quench, but fluoresce on separation via enzymatic cleavage of the substrate. Although these probes offer excellent contrast, the detection of enzyme activity has largely only been described qualitatively. In order to assess the effectiveness of a probe, it is useful to have a quantitative measure, such as the enzyme-substrate kinetic parameters. We have developed an assay to determine kinetic parameters and applied it to an intramolecularly quenched molecule, Pyro-PtdEtn-BHQ, a NIR fluorescent probe specific to phosphatidylcholine-specific phospholipase C. The development of this assay includes corrections for intermolecular quenching, calibration, optimization of reaction mixtures, and determination of kinetic and inhibition parameters. This assay can easily be extended to analyze and compare the efficiency of other fluorescent activatable phospholipase probes as suitable molecular imaging agents.

Indexed as

AnimalsBacillus cereusChickensEggsEnzyme AssaysFluorescenceFluorescent DyesHumansKineticsMolecular ImagingPhosphatidylcholinesSpectrometry, FluorescenceType C PhospholipasesFluorescent DyesPhosphatidylcholinesphosphatidylcholine-specific phospholipase CType C Phospholipases

Identifiers

PMID22230285
PMCPMC3528081
OpenAlexW2090884209

What OpenQuestion holds

Textmetadata
LicenceTDM
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.