Mach–Zehnder interferometer (MZI) point-of-care system for rapid multiplexed detection of microRNAs in human urine specimens

Mach–Zehnder interferometer (MZI) point-of-care system for rapid multiplexed detection of microRNAs in human urine specimens
Title:
Mach–Zehnder interferometer (MZI) point-of-care system for rapid multiplexed detection of microRNAs in human urine specimens
Other Titles:
Biosensors and Bioelectronics
Keywords:
Publication Date:
20 April 2015
Citation:
Qing Liu, Yong Shin, Jack Sheng Kee, Kyoung Woo Kim, Siti Rafeah Mohamed Rafei, Agampodi Promoda Perera, Xiaoguang Tu, Guo-Qiang Lo, Estelle Ricci, Marc Colombel, Edmund Chiong, Jean Paul Thiery, Mi Kyoung Park, Mach–Zehnder interferometer (MZI) point-of-care system for rapid multiplexed detection of microRNAs in human urine specimens, Biosensors and Bioelectronics, Volume 71, 15 September 2015, Pages 365-372, ISSN 0956-5663, http://dx.doi.org/10.1016/j.bios.2015.04.052.
Abstract:
MicroRNAs have been identified as promising biomarkers for human diseases. The development of a point-of-care (POC) test for the disease-associated miRNAs would be especially beneficial, since miRNAs are unexpectedly well preserved in various human specimens, including urine. Here, we present the Mach–Zehnder interferometer-miRNA detection system capable of detecting multiple miRNAs in clinical urine samples rapidly and simultaneously in a label-free and real-time manner. Through measurement of the light phase change, the MZI sensor provides an optical platform for fast profiling of small molecules with improved accuracy. We demonstrate that this system could specifically detect target miRNAs (miR-21, and let-7a), and even identify the single nucleotide polymorphism of the let-7 family of miRNAs from synthetic and cell line samples. The clinical applicability of this system is confirmed by simultaneously detecting two types of miRNAs in urine samples of bladder cancer patients in a single reaction, with a detection time of 15 min. The POC system can be expanded to detect a number of miRNAs of different species and should be useful for a variety of clinical applications requiring at or near the site of patient care.
License type:
http://creativecommons.org/licenses/by-nc-nd/4.0/
Funding Info:
Description:
ISSN:
0956-5663
Files uploaded:

File Size Format Action
pub15-173-bep-008-pp.pdf 572.77 KB PDF Open