MiRNA-93 in serum extracellular vesicles before and after low dose rate prostate brachytherapy

Koji Iinuma, Kyojiro Kawakami, Kosuke Mizutani, Yasunori Fujita, Takahiro Yamaguchi, Masaya Ito, Tomoyasu Kumano, Masayuki Matsuo, Masahiro Nakano, Takuya Koie, Masafumi Ito, Taku Kato

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


Background/Aim: To identify novel biomarkers for prostate cancer (PC), we evaluated changes of miRNAs contained in serum small extracellular vesicles (EVs) in patients who received low dose rate prostate brachytherapy (BT). Materials and Methods: EVs were isolated from the pooled serum of 10 PC patients prior to and 1 month after BT. miRNA profiling and quantitation in EVs was performed by microarray analysis and RT-digital PCR, respectively. Expression of miRNA-93 in prostate tissue was evaluated using the TCGA database and its level in EVs was determined in 25 patients before and 1, 3, 6 and 12 months after BT. Results: Profiling and quantitation identified miRNA-93 as significantly down-regulated in EVs after BT. TCGA database analysis showed that miRNA-93 was increased in PC tissue. miRNA-93 in EVs significantly decreased in 3, 6 and 12 months after BT. Conclusion: miRNA-93 contained in serum EVs may be a novel diagnostic and monitoring biomarker for PC.

Original languageEnglish
Pages (from-to)2411-2418
Number of pages8
JournalAnticancer research
Issue number5
Publication statusPublished - 05-2021
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Oncology
  • Cancer Research


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