INTRODUCTION: MicroRNAs (miRNAs) are small regulatory RNAs that do not code for proteins.
Detection of circulating tumor cells (CTC) would provide diagnostic and prognostic information in prostate tumors (PT). Thus, miRNAs could constitute a promising new class of biomarkers for CTC detection.
OBJECTIVES: To analyze circulating microRNAs in whole blood as non-invasive markers in patients with localized prostate cancer and healthy individuals.
MATERIAL AND METHODS: A preliminary study including a population of 40 patients with mean age of 71 years and mean PSA of 18, 9ng/ml (range). Regarding the risk group (RG): 33.3% had low risk, 30% intermediate risk and 36.7% high risk. A previous in silico study identified 92 candidates and was followed by another in vivo to verify the findings of the former using array technology by real-time PCR.
RESULTS: Statistical analysis of the results revealed 10 microRNAs candidates with statistically significant differential expression between the different risk groups and healthy controls: hsa-miR-337-3p, hsa-miR-330-3p, hsa-miR-339-3p, hsa-miR-124, hsa-miR-218, hsa-miR-128, hsa-miR-10a, hsa-miR-199b-5p, hsa-miR-200b and hsa-miR-15b.
CONCLUSIONS: Our data suggest that circulating microRNAs can act as biomarkers to identify risk groups in CaP.
Written by:
Medina-Villaamil V, Martínez-Breijo S, Portela-Pereira P, Quindós-Varela M, Santamarina-Caínzos I, Antón-Aparicio LM, Gómez-Veiga F. Are you the author?
Instituto de Investigación Biomédica, A Coruña, INIBIC, CHU A Coruña-XXIAC, A Coruña, España; Servicio de Urología Médica, CHU A Coruña-XXIAC, A Coruña, España; Servicio de Oncología Médica, CHU A Coruña-XXIAC, A Coruña, España; Instituto de Investigación Biomédica, A Coruña, INIBIC, CHU A Coruña-XXIAC, A Coruña, España; Departamento de Medicina, Universidade da Coruña, UDC, A Coruña, España.
Reference: Actas Urol Esp. 2014 Mar 21. pii: S0210-4806(14)00045-X.
doi: 10.1016/j.acuro.2014.02.008
PubMed Abstract
PMID: 24661838
Article in English, Spanish.
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