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Novel long non-coding RNAs are specific diagnostic and prognostic markers for prostate cancer

  • Current prostate cancer (PCa) biomarkers such as PSA are not optimal in distinguishing cancer from benign prostate diseases and predicting disease outcome. To discover additional biomarkers, we investigated PCa-specific expression of novel unannotated transcripts. Using the unique probe design of Affymetrix Human Exon Arrays, we identified 334 candidates (EPCATs), of which 15 were validated by RT-PCR. Combined into a diagnostic panel, 11 EPCATs classified 80% of PCa samples correctly, while maintaining 100% specificity. High specificity was confirmed by in situ hybridization for EPCAT4R966 and EPCAT2F176 (SChLAP1) on extensive tissue microarrays. Besides being diagnostic, EPCAT2F176 and EPCAT4R966 showed significant association with pT-stage and were present in PIN lesions. We also found EPCAT2F176 and EPCAT2R709 to be associated with development of metastases and PCa-related death, and EPCAT2F176 to be enriched in lymph node metastases. Functional significance of expression of 9 EPCATs was investigated by siRNA transfection, revealing that knockdown of 5 different EPCATs impaired growth of LNCaP and 22RV1 PCa cells. Only the minority of EPCATs appear to be controlled by androgen receptor or ERG. Although the underlying transcriptional regulation is not fully understood, the novel PCa-associated transcripts are new diagnostic and prognostic markers with functional relevance to prostate cancer growth.

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Metadaten
URN:urn:nbn:de:kobv:526-opus4-6329
Publisher DOI:https://doi.org/10.18632/oncotarget.2879
Author:René BöttcherORCiD, A. Marije Hoogland, Natasja Dits, Esther VerhoefORCiD, Charlotte Kweldam, Piotr WaraneckiORCiD, Chris H. Bangma, Geert J.L.H. van LeendersORCiD, Guido JensterORCiD
ISSN:1949-2553
Parent Title (English):Oncotarget
Document Type:Article
Language:English
Year of Publication:2015
Volume:6
Issue:6
First Page:4036
Last Page:4050
Faculties an central facilities:Fachbereich Ingenieur- und Naturwissenschaften
Publishing Institution:Technische Hochschule Wildau
Tag:biomarker; exon array; in situ hybridization; long non-coding RNA; prostate cancer
Source:Böttcher R., Hoogland A. Marije, Dits N., Verhoef E. I., Kweldam C., Waranecki P., Bangma C. H, van Leenders G. J.L.H., Jenster G. Novel long non-coding RNAs are specific diagnostic and prognostic markers for prostate cancer. Oncotarget. 2015; 6: 4036-4050. Retrieved from https://www.oncotarget.com/article/2879/text/
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 61 Medizin und Gesundheit / 616 Krankheiten
Licence (German):Creative Commons - CC BY 3.0 - Namensnennung 3.0 Unported
Release Date:2016/07/05
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