A novel platform using homobifunctional hydrazide for enrichment and isolation of urinary circulating RNAs

Bonhan Koo, Yunlim Kim, Yoon Ok Jang, Huifang Liu, Myoung Gyu Kim, Hyo Joo Lee, Myung Kyun Woo, Choung Soo Kim, Yong Shin

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Changes in specific circulating RNA (circRNA) expressions can serve as diagnostic noninvasive biomarkers for prostate cancer (PCa). However, there are still unmet needs, such as unclear types and roles of circRNAs, PCa detection in benign prostatic hyperplasia (BPH) by unstandardized methods, and limitations of sample volume capacity and low circRNA concentrations. This study reports a simple and rapid circRNA enrichment and isolation technique named “HAZIS-CirR” for the analysis of urinary circRNAs. The method utilizes homobifunctional hydrazides with amine-modified zeolite and polyvinylidene fluoride (PVDF) syringe filtration for combining electrostatic and covalent coupling and size-based filtration, and it offers instrument-free isolation of circRNAs in 20 min without volume limitation, thermoregulation, and lysis. HAZIS-CirR has high capture efficiency (82.03%–92.38%) and a 10-fold more sensitive detection limit (20 fM) than before enrichment (200 fM). The clinical utility of HAZIS-CirR is confirmed by analyzing circulating mRNAs and circulating miRNAs in 89 urine samples. Furthermore, three miRNA panels that differentiate PCa from BPH and control, PCa from control, and BPH from control, respectively, are established by comparing miRNA levels. HAZIS-CirR will be used as an optimal and established method for the enrichment and isolation of circRNAs as diagnostic, prognostic, and predictive biomarkers in human cancers.

Original languageEnglish
Article numbere10348
JournalBioengineering and Translational Medicine
Issue number1
Publication statusPublished - 2023 Jan

Bibliographical note

Funding Information:
This study was supported by the Ministry of Science, ICT and Future Planning (MSIP) through the National Research Foundation of Korea (NRF) (2020R1A2C2007148 and 2016R1A5A1010148), also supported by a grant from the Korea Health Technology R & D Project through the Korea Health Industry Development Institute (KHIDI), funded by the Ministry of Health & Welfare (HI22C0306), Republic of Korea.

Funding Information:
Ministry of Health & Welfare, Korea, Grant/Award Number: HI22C0306; National Research Foundation of Korea, Grant/Award Numbers: 2020R1A2C2007148, 2016R1A5A1010148 Funding information

Publisher Copyright:
© 2022 The Authors. Bioengineering & Translational Medicine published by Wiley Periodicals LLC on behalf of American Institute of Chemical Engineers.

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Biomedical Engineering
  • Pharmaceutical Science


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