Evidence map›Paper›PMID 22594965›Full record

ArticleJournal of proteome research2012

Comparison of 4-plex to 8-plex iTRAQ quantitative measurements of proteins in human plasma samples.

Gwenael Pottiez, Jayme Wiederin, Howard S Fox, Pawel Ciborowski

Open access · bronzeAbstract readComparative 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 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
5.0field-weighted citation impact, top 4% 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

33 citing papers in PubMed, 92 citations in OpenAlex.

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  19. Drought-Induced Leaf Proteome Changes in Switchgrass Seedlings.International journal of molecular sciences · 2016
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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

4 authors at 1 institution in 1 country.

Gwenael PottiezDepartment of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, Nebraska 68198-5800, USA.
Jayme Wiederin
Howard S Fox
Pawel Ciborowski
University of Nebraska Medical Center · US

Funding

Therapeutics Core (Page 286)P30MH062261 · NIMH · UNIVERSITY OF NEBRASKA MEDICAL CENTER · PI GENDELMAN, HOWARD E · 2000 to 2021
$37.7M
ZINC FINGER-INSPIRED FLUORESCENT CHEMOSENSORSP20RR016469 · NCRR · UNIVERSITY OF NEBRASKA MEDICAL CENTER · PI TURPEN, JAMES B · 2001 to 2011
$36.2M
Transcriptional Regulation, the Nuclear Proteome, and HIV/Meth/cART: From ProfiliR01DA030962 · NIDA · UNIVERSITY OF NEBRASKA MEDICAL CENTER · PI CIBOROWSKI, PAWEL S, FOX, HOWARD S · 2010 to 2014
$3.1M
Proteomic Strategies for AIDS and Drug Abuse - HIV and METH CNS SynergyP01DA026146 · NIDA · UNIVERSITY OF NEBRASKA MEDICAL CENTER · PI FOX, HOWARD S · 2008 to 2010
$2.9M
NCRR NIH HHS 5P20RR016469NCRR NIH HHS P20 RR016469NIDA NIH HHS 5P01DA026146NIDA NIH HHS 5R01DA030962NIDA NIH HHS P01 DA026146NIDA NIH HHS R01 DA030962NIMH NIH HHS 2P30MH062261NIMH NIH HHS P30 MH062261
6 · The paper itself

Abstract

Methods for isobaric tagging of peptides, iTRAQ or TMT, are commonly used platforms in mass spectrometry based quantitative proteomics. These two methods are very often used to quantitate proteins in complex samples, e.g., serum/plasma or CSF supporting biomarker discovery studies. The success of these studies depends on multiple factors, including the accuracy of ratios of reporter ions reflecting quantitative changes of proteins. Because reporter ions are generated during peptide fragmentation, the differences of chemical structure of iTRAQ balance groups may have an effect on how efficiently these groups are fragmented and thus how differences in protein expression will be measured. Because 4-plex and 8-plex iTRAQ reagents do have different structures of balanced groups, it has been postulated that indeed differences in protein identification and quantitation exist between these two reagents. In this study we controlled the ratios of tagged samples and compared quantitation of proteins using 4-plex versus 8-plex reagents in the context of a highly complex sample of human plasma using ABSciex 4800 MALDI-TOF/TOF mass spectrometer and ProteinPilot 4.0 software. We observed that 8-plex tagging provides more consistent ratios than 4-plex without compromising protein identification, thus allowing investigation of eight experimental conditions in one analytical experiment.

Indexed as

Staining and LabelingBlood ProteinsHumansPeptide FragmentsProteolysisProteomeProteomicsTandem Mass SpectrometryBlood ProteinsPeptide FragmentsProteome

Identifiers

PMID22594965
PMCPMC3390908
OpenAlexW1975724727

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.