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Kong X, Wang J, Lv S, Wang C, Hong H, Xie P, Guo Y, Zhu N, Qin P, Sun Y, Xu J. Bidirectional motivated bimodal isothermal strand displacement amplifier with a table tennis-like movement for the ultrasensitive fluorescent and colorimetric detection of depression-related microRNA. Anal Chim Acta 2023; 1247:340894. [PMID: 36781251 DOI: 10.1016/j.aca.2023.340894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 01/16/2023] [Accepted: 01/24/2023] [Indexed: 01/26/2023]
Abstract
An increasing number of studies have highlighted the potential of microRNAs (miRNAs) as physiological indicators of major depressive disorder (MDD). Herein, we developed a bidirectional-motivated bimodal isothermal strand displacement amplifier (BB-ISDA) for the ultrasensitive fluorescent and colorimetric detection of MDD-related miRNA-132. In the BB-ISDA system, a pair of functionalized hairpin probes (HP1 and HP2) with nicking recognition sites are designed to recognize target miRNA. The recognition of target miRNA by HP1 (or HP2) generates copious numbers of nicked triggers by HP1 (or HP2)-based ISDA to recognize HP2 (or HP1) by autonomous strand polymerization, cleavage, and displacement, which in turn induces the subsequent generation of copious numbers of nicked G-quadruplex triggers by HP2 (or HP1)-based ISDA to recognize HP1 (or HP2) along a same line. After many cycles, this bidirectional motivated table-tennis-like movement amplifies the fluorescent signal from HP1 and the colorimetric signal from HP2, simultaneously. The dual-signal output pattern was cross-validated for sensing miRNA-132. Each of the detection modal shows the capability for qualitative and quantitative detection of miRNA-132 with high sensitivity and specificity. The adaptability of the bimodal mechanism was verified via the detection of target miRNA-132 from clinical human blood samples. We envision that this BB-ISDA with dual-signal output for accurate and reliable analysis of miRNA is promising for the molecular diagnosis of human mental diseases.
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Affiliation(s)
- Xiaoming Kong
- Affiliated Psychological Hospital of Anhui Medical University, Anhui Mental Health Center, Hefei Fourth People's Hospital, 316 Huangshan Road, Hefei, 230022, PR China
| | - Junfeng Wang
- School of Public Health, Anhui Medical University, Hefei, 230032, Anhui, PR China
| | - Siwen Lv
- Affiliated Psychological Hospital of Anhui Medical University, Anhui Mental Health Center, Hefei Fourth People's Hospital, 316 Huangshan Road, Hefei, 230022, PR China
| | - Chen Wang
- Affiliated Psychological Hospital of Anhui Medical University, Anhui Mental Health Center, Hefei Fourth People's Hospital, 316 Huangshan Road, Hefei, 230022, PR China
| | - Hong Hong
- Affiliated Psychological Hospital of Anhui Medical University, Anhui Mental Health Center, Hefei Fourth People's Hospital, 316 Huangshan Road, Hefei, 230022, PR China
| | - Pengyv Xie
- Affiliated Psychological Hospital of Anhui Medical University, Anhui Mental Health Center, Hefei Fourth People's Hospital, 316 Huangshan Road, Hefei, 230022, PR China
| | - Yv Guo
- Affiliated Psychological Hospital of Anhui Medical University, Anhui Mental Health Center, Hefei Fourth People's Hospital, 316 Huangshan Road, Hefei, 230022, PR China
| | - Nannan Zhu
- Affiliated Psychological Hospital of Anhui Medical University, Anhui Mental Health Center, Hefei Fourth People's Hospital, 316 Huangshan Road, Hefei, 230022, PR China
| | - Panzhu Qin
- School of Public Health, Anhui Medical University, Hefei, 230032, Anhui, PR China.
| | - Yan Sun
- Department of Geriatric Endocrinology, The First Affiliated Hospital of Anhui Medical University, 218 Jixi Road, Hefei, 230022, PR China.
| | - Jianguo Xu
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, 230009, Anhui, PR China.
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