Evidence map›Paper›PMID 21504578›Full record

ArticleProteome science2011

Periostin identified as a potential biomarker of prostate cancer by iTRAQ-proteomics analysis of prostate biopsy.

Chuanyu Sun, Chao Song, Zhicheng Ma, Ke Xu, Yang Zhang, Hong Jin, Shijun Tong, Weihong Ding, Guowei Xia, Qiang Ding

Open access · goldAbstract read
In one paragraph

Article in Proteome science, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
1.8field-weighted citation impact, top 14% 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

20 citing papers in PubMed, 46 citations in OpenAlex.

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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

10 authors at 3 institutions in 1 country.

Chuanyu SunDepartment of Urology, Huashan Hospital, FudanUniversity, Shanghai, 200040, China.
Chao SongInstitute of Psychology, Zhejiang Sci-Tech University, Hangzhou, 310018, China.
Zhicheng MaDepartment of Urology, Huashan Hospital, FudanUniversity, Shanghai, 200040, China.
Ke XuDepartment of Urology, Huashan Hospital, FudanUniversity, Shanghai, 200040, China.
Yang ZhangInstitutes of Biomedical Sciences, FudanUniversity, Shanghai, 200032, China.
Hong JinInstitutes of Biomedical Sciences, FudanUniversity, Shanghai, 200032, China.
Shijun TongDepartment of Urology, Huashan Hospital, FudanUniversity, Shanghai, 200040, China.
Weihong DingDepartment of Urology, Huashan Hospital, FudanUniversity, Shanghai, 200040, China.
Guowei Xia *Department of Urology, Huashan Hospital, FudanUniversity, Shanghai, 200040, China.
Qiang Ding *Department of Urology, Huashan Hospital, FudanUniversity, Shanghai, 200040, China.
Huashan Hospital · CNFudan University · CNZhejiang Sci-Tech University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundProteomics may help us better understand the changes of multiple proteins involved in oncogenesis and progression of prostate cancer(PCa) and identify more diagnostic and prognostic biomarkers. The aim of this study was to screen biomarkers of PCa by the proteomics analysis using isobaric tags for relative and absolute quantification(iTRAQ).

methodsThe patients undergoing prostate biopsies were classified into 3 groups according to pathological results: benign prostate hyperplasia (BPH, n = 20), PCa(n = 20) and BPH with local prostatic intraepithelial neoplasm(PIN, n = 10). Then, all the specimens from these patients were analyzed by iTRAQ and two-dimensional liquid chromatography-tandem mass spectrometry (2DLC-MS/MS). The Gene Ontology(GO) function and the transcription regulation networks of the differentially expressed were analyzed by MetaCore software. Western blotting and Immunohistochemical staining were used to analyze the interesting proteins.

resultA total of 760 proteins were identified from 13787 distinct peptides, including two common proteins that enjoy clinical application: prostate specific antigen (PSA) and prostatic acid phosphatase(PAP). Proteins that expressed differentially between PCa and BPH group were further analyzed. Compared with BPH, 20 proteins were significantly differentially up-regulated (>1.5-fold) while 26 were significantly down-regulated in PCa(<0.66-fold). In term of GO database, the differentially expressed proteins were divided into 3 categories: cellular component(CC), molecular function (MF) and biological process(BP). The top 5 transcription regulation networks of the differentially expressed proteins were initiated through activation of SP1, p53, YY1, androgen receptor(AR) and c-Myc The overexpression of periostin in PCa was verified by western blotting and immunohistochemical staining.

conclusionOur study indicates that the iTRAQ technology is a new strategy for global proteomics analysis of the tissues of PCa. A significant up-regulation of periostin in PCa compared to BPH may provide clues for not only a promising biomarker for the prognosis of PCa but also a potential target for therapeutical intervention.

Identifiers

PMID21504578
PMCPMC3100237
OpenAlexW2165979262

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Registered trials

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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.