TRPM4 protein expression in prostate cancer: a novel tissue biomarker associated with risk of biochemical recurrence following radical prostatectomy View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2016-03

AUTHORS

Kasper Drimer Berg, Davide Soldini, Maria Jung, Dimo Dietrich, Carsten Stephan, Klaus Jung, Manfred Dietel, Ben Vainer, Glen Kristiansen

ABSTRACT

BACKGROUND: Transient receptor potential cation channel, subfamily M, member 4 (TRPM4) messenger RNA (mRNA) has been shown to be upregulated in prostate cancer (PCa) and might be a new promising tissue biomarker. We evaluated TRPM4 protein expression and correlated the expression level with biochemical recurrence (BR) following radical prostatectomy (RP). MATERIAL AND METHODS: The study included 614 patients who had undergone RP. TRPM4 immunohistochemical staining was performed on samples of benign tissue, tissue containing PIN glands and PCa tissue using a commercially available polyclonal antibody. Staining intensity was recorded by two independent observers using a four-tired semi-quantitative grading system (0, 1+, 2+, 3+) converted into H-scores. Interobserver agreement was calculated by linear weighted kappa statistics. The association between staining intensity and BR was analysed using the Kaplan-Meier estimator and uni- and multiple Cox proportional hazard regression models. RESULTS: Significantly higher staining intensity was found in PCa glands compared to benign glands (p < 0.001). The concordance rate in TRPM4 staining intensities for benign, PIN and PCa tissue ranged from 86.0 to 91.5 %, corresponding to linear weighted kappa values of 0.566-0.789. After adjusting for patient and tumour characteristics, patients with a higher staining intensity in PCa glands compared to matched benign glands and an H-score equal to or above the median had an increased risk of BR (HR 1.79-2.62; p = 0.01-0.03 for the two observers) when compared to patients with a lower staining intensity. CONCLUSIONS: TRPM4 protein expression is widely expressed in benign and cancerous prostate tissue, with highest staining intensities found in PCa. Overexpression of TRPM4 in PCa (combination of high staining intensity and a high H-score) is associated with increased risk of BR after RP. More... »

PAGES

345-355

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s00428-015-1880-y

DOI

http://dx.doi.org/10.1007/s00428-015-1880-y

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1025565785

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/26590985


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Download the RDF metadata as:  json-ld nt turtle xml License info

HOW TO GET THIS DATA PROGRAMMATICALLY:

JSON-LD is a popular format for linked data which is fully compatible with JSON.

curl -H 'Accept: application/ld+json' 'https://scigraph.springernature.com/pub.10.1007/s00428-015-1880-y'

N-Triples is a line-based linked data format ideal for batch operations.

curl -H 'Accept: application/n-triples' 'https://scigraph.springernature.com/pub.10.1007/s00428-015-1880-y'

Turtle is a human-readable linked data format.

curl -H 'Accept: text/turtle' 'https://scigraph.springernature.com/pub.10.1007/s00428-015-1880-y'

RDF/XML is a standard XML format for linked data.

curl -H 'Accept: application/rdf+xml' 'https://scigraph.springernature.com/pub.10.1007/s00428-015-1880-y'


 

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