Potential of miRNAs in urinary extracellular vesicles for management of active surveillance in prostate cancer patients

Posted: 2021-11-23 20:00:00
Background: Active surveillance is an alternative to radical treatment for patients with low-risk prostate cancer, which could also benefit some patients with intermediate risk. We have investigated the use of miRNA in urinary extracellular vesicles to stratify these patients. Methods: NGS was performed to profile the miRNAs from small urinary extracellular vesicles in a cohort of 70 patients with prostate cancer ISUP Grade 1, 2 or 3. The most promising candidates were then analysed by RT-qPCR in a new cohort of 60 patients. Results: NGS analysis identified nine miRNAs differentially expressed in at least one of the comparisons. The largest differences were found with miR-1290 (Grade 3 vs. 1), miR-320a-3p (Grade 3 vs. 2) and miR-155-5p (Grade 2 vs. 1). Combinations of 2-3 miRNAs were able to differentiate between two ISUP grades with an AUC 0.79-0.88. RT-qPCR analysis showed a similar trend for miR-186-5p and miR-30e-5p to separate Grade 3 from 2, and miR-320a-3p to separate Grade 2 from 1. Conclusions: Using NGS, we have identified several miRNAs that discriminate between prostate cancer patients with ISUP Grades 1, 2 and 3. Moreover, miR-186-5p, miR-320a-3p and miR-30e-5p showed a similar behaviour in an independent cohort using an alternative analytical method. Our results show that miRNAs from urinary vesicles can be potentially useful as liquid biopsies for active surveillance.

参考サイト PubMed: exsome


7月 14, 2014 バイオアソシエイツ


Henry Ford Hospitalの研究チームは、動物を使った新しい研究で、卒中発作後に幹細胞から放出される エクソソーム と呼ばれる微小な (50nm) 脂質性の細胞内器官に内包されるRNA (リボ核酸) 塩基配列のごく短いmicroRNAのうち、特定のものが神経的な回復に一役買っていることを突き止めた。研究チームのラットを用いた実験では、この特定のmicroRNAが幹細胞からエクソソームを使って脳細胞に送られ、卒中発作後の機能回復を強化していた。…

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