Evidence map›Paper›PMID 22264027›Full record

ArticleJournal of proteome research2012

Relative quantification of serum proteins from pancreatic ductal adenocarcinoma patients by stable isotope dilution liquid chromatography-mass spectrometry.

Angela Y Wehr, Wei-Ting Hwang, Ian A Blair, Kenneth H Yu

Open access · greenAbstract readValidation Study
In one paragraph

Article in Journal of proteome research, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
3.1field-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

12 citing papers in PubMed, 35 citations in OpenAlex.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 1 country.

Angela Y WehrCenters for Cancer Pharmacology and Excellence in Environmental Toxicology, University of Pennsylvania School of Medicine , Philadelphia, Pennsylvania 19104, United States.
Wei-Ting Hwang
Ian A Blair
Kenneth H Yu
University of Pennsylvania · USMemorial Sloan Kettering Cancer Center · US

Funding

UNIVERSITY OF PENNSYLVANIA CAN CTR SUPPORT GRANTP30CA016520 · NCI · UNIVERSITY OF PENNSYLVANIA · PI SHELLEY L BERGER · 1985 to 2026
$222.3M
Translational Research Support CoreP30ES013508 · NIEHS · UNIVERSITY OF PENNSYLVANIA · PI Rebecca A Simmons · 2006 to 2026
$35.3M
TRANSGENIC AND CHIMERIC MOUSE COREP30DK050306 · NIDDK · UNIVERSITY OF PENNSYLVANIA · PI Ken Hashigiwa Cadwell · 1997 to 2026
$32.5M
Training Program in Cancer PharmacologyR25CA101871 · NCI · UNIVERSITY OF PENNSYLVANIA · PI BLAIR, IAN ALEXANDER · 2003 to 2013
$4.3M
Biomarkers of exposure and response to environmental tobacco smoke in the pancreaK08ES019615 · NIEHS · SLOAN-KETTERING INST CAN RESEARCH · PI YU, KENNETH H. · 2011 to 2013
$541k
NCI NIH HHS P30 CA016520NCI NIH HHS R25 CA101871NCI NIH HHS R25CA101871NIDDK NIH HHS P30 DK050306NIDDK NIH HHS P30DK050306NIEHS NIH HHS K08 ES019615NIEHS NIH HHS K08ES019615NIEHS NIH HHS P30 ES013508NIEHS NIH HHS P30ES013508
6 · The paper itself

Abstract

We report an innovative multiplexed liquidchromatography-multiple reaction monitoring/mass spectrometry (LC-MRM/MS)-based assay for rapidly measuring a large number of disease specific protein biomarkers in human serum. Furthermore, this approach uses stable isotope dilution methodology to reliably quantify candidate protein biomarkers. Human serum was diluted using a stable isotope labeled proteome (SILAP) standard prepared from the secretome of pancreatic cell lines, subjected to immunoaffinity removal of the most highly abundant proteins, trypsin digested, and analyzed by LC-MRM/MS. The method was found to be precise, linear, and specific for the relative quantification of 72 proteins when analyte response was normalized to the relevant internal standard (IS) from the SILAP. The method made it possible to determine statistically different concentrations for three proteins (cystatin M, IGF binding protein 7, and villin 2) in control and pancreatic cancer patient samples. This method proves the feasibility of using a SILAP standard in combination with stable isotope dilution LC-MRM/MS analysis of tryptic peptides to compare changes in the concentration of candidate protein biomarkers in human serum.

Indexed as

Amino Acid SequenceBiomarkers, TumorBlood ProteinsCarcinoma, Pancreatic DuctalCase-Control StudiesCell Line, TumorChromatography, LiquidHumansIsotope LabelingMolecular Sequence DataPancreatic NeoplasmsPeptide FragmentsProteolysisReference StandardsTandem Mass SpectrometryTrypsinBiomarkers, TumorBlood ProteinsPeptide FragmentsTrypsin

Identifiers

PMID22264027
PMCPMC3292696
OpenAlexW2027653671

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.