alexa Characterization of Kallireins and microRNAs in Urine Sediment for the Discrimination of Prostate Cancer from Benign Prostatic Hyperplasia
ISSN: 1948-5956

Journal of Cancer Science & Therapy
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Research Article

Characterization of Kallireins and microRNAs in Urine Sediment for the Discrimination of Prostate Cancer from Benign Prostatic Hyperplasia

Maria G. Egidi1#, Gabriella Guelfi2#, Giovanni Cochetti1*, Giulia Poli1, Francesco Barillaro1, Danilo Zampini2, Luca Mechelli2 and Ettore Mearini1

1Department of Surgical and Biomedical Sciences, Institution of Urological, Andrological Surgery and Minimally Invasive Techniques, University of Perugia, Loc. S. Andrea delle Fratte, 06156 Perugia, Italy

2Department of Veterinary Medicine, University of Perugia, Via San Costanzo 4, 06126 Perugia, Italy

#These authors contributed equally to the work

*Corresponding Author:
Giovanni Cochetti
Department of Surgical and Biomedical Sciences
Institution of Urological
Andrological Surgery and Minimally Invasive Techniques
University of Perugia, Loc. S.Andrea delle Fratte
06156 Perugia, Italy
E-mail: [email protected]

Received date: March 05, 2015; Accepted date: April 23, 2015; Published date: April 25, 2015

Citation: Citation: Egidi MG, Guelfi G, Cochetti G, Poli G, Barillaro F, et al. (2015) Characterization of Kallireins and microRNAs in Urine Sediment for the Discrimination of Prostate Cancer from Benign Prostatic Hyperplasia. J Cancer Sci Ther 7:130-136. doi:10.4172/1948-5956.1000337

Copyright: © 2015 Egidi MG, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Objectives: Prostate Cancer (PCa) and Benign Prostatic Hyperplasia (BPH) are frequently coexisting in elderly men. The measurement of serum PSA together with Digital Rectal Examination (DRE) represents the primary diagnostic tool to suspect PCa, whereas definitive diagnosis is achieved by prostate biopsy. The low specificity of PSA and the modest detection rate of biopsy convict the patient to a quite often unnecessary and uncomfortable clinical itinerary. There is a urgent need for new and more accurate methodologies to diagnosize PCa. In the present study, the expression of 4 mRNAs and 2 miRNAs was evaluated in post DRE urine cell pellets from patients suffering PCa and age-matched subjects affected by BPH with elevated PSA levels. We also evaluated the diagnostic accuracy of markers in predicting PCa.

Materials and methods: The expression levels of 4 mRNAs (3 kallikreins - KLK3, KLK11, KLK13 and a prostate cancer antigen - PCA3) and 2 microRNAs (miR-9-3p and miR-19a-3p) were assayed by means of real-time PCR in post DRE urine of 79 men undergoing prostate biopsy for PSA levels > 3 ng/mL. The diagnostic power of tested markers was evaluated through logistic regression analysis.

Results: PCA3 was undetectable in 22 out of 38 BPH subjects. KLK3 and KLK11 were significantly upregulated in PCa group (p value < 0.001), while miR-9-3p and miR-19a-3p were up-regulated in BPH group (p value <0.001 and < 0.01, respectively). KLK13 was not differentially expressed between groups. MiR-19a-3p and miR- 9-3p reached the highest specificity (64.29%) and sensitivity (81.08%), respectively. The more accurate bivariate logistic model was obtained combining KLK11 with either miR-9-3p and miR-19a-3p.

Conclusions: Our findings demonstrated that selected kallikreins and miRNAs proved to be an accurate diagnostic tool for PCa. Urine cells pellets obtained after DRE represent a reliable biological matrix for minimally invasive gene expression assays.

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