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Wong CL, Loke SY, Lim HQ, Balasundaram G, Chan P, Chong BK, Tan EY, Lee ASG, Olivo M. Circulating microRNA breast cancer biomarker detection in patient sera with surface plasmon resonance imaging biosensor. JOURNAL OF BIOPHOTONICS 2021; 14:e202100153. [PMID: 34369655 DOI: 10.1002/jbio.202100153] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 07/06/2021] [Accepted: 07/22/2021] [Indexed: 06/13/2023]
Abstract
In this article, we report for the first time, the detection of circulating miRNA as a breast cancer biomarker in patient sera using surface plasmon resonance imaging biosensor. The advantage of this approach lies in the rapid, label-free and sensitive detection. The sensor excites plasmonic resonance on the gold sensor surface and specific DNA-miRNA molecular bindings elucidate responses in the plasmonic resonance image. Experiments of detecting synthetic miRNA molecules (miR-1249) were performed and the sensor resolution was found to be 63.5 nM. The sensor was further applied to screen 17 patient serum samples from National Cancer Centre Singapore and Tan Tock Seng Hospital. Sensor intensity response was found to differ by 20% between malignant and benign cases and thus forms, a potential and an important metric in distinguishing benignity and malignancy.
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Affiliation(s)
- Chi Lok Wong
- Translational Biophotonic Laboratory, Institute of Bioengineering and Bioimaging, Agency of Science, Technology and Research (A*STAR), Singapore
| | - Sau Yeen Loke
- Division of Cellular and Molecular Research, Humphrey Oei Institute of Cancer Research, National Cancer Centre Singapore (NCCS), Singapore
| | - Hann Qian Lim
- Translational Biophotonic Laboratory, Institute of Bioengineering and Bioimaging, Agency of Science, Technology and Research (A*STAR), Singapore
| | - Ghayathri Balasundaram
- Translational Biophotonic Laboratory, Institute of Bioengineering and Bioimaging, Agency of Science, Technology and Research (A*STAR), Singapore
| | - Patrick Chan
- Division of Cellular and Molecular Research, Humphrey Oei Institute of Cancer Research, National Cancer Centre Singapore (NCCS), Singapore
| | - Bee Kiang Chong
- Department of General Surgery, Tan Tock Seng Hospital, Singapore
| | - Ern Yu Tan
- Department of Diagnostic Radiology, Tan Tock Seng Hospital, Singapore
- Lee Kong Chian School of Medicine, Singapore
- Institute of Molecular and Cell Biology, Agency of Science, Technology and Research (A*STAR), Singapore
| | - Ann Siew Gek Lee
- Division of Cellular and Molecular Research, Humphrey Oei Institute of Cancer Research, National Cancer Centre Singapore (NCCS), Singapore
| | - Malini Olivo
- Translational Biophotonic Laboratory, Institute of Bioengineering and Bioimaging, Agency of Science, Technology and Research (A*STAR), Singapore
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Lv D, Cao Y, Chen L, Zhu Z, Chen X, Li D, Wang D, Li S, Chai Y, Lu F. Simulation Strategies for Characterizing Phosphodiesterase-5 Inhibitors in Botanical Dietary Supplements. Anal Chem 2018; 90:10765-10770. [PMID: 30148354 DOI: 10.1021/acs.analchem.8b01609] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A novel "Prediction and Confirmation" (PC) strategy was proposed for characterizing phosphodiesterase-5 inhibitor (PDE-5) derivatives in botanical dietary supplements (BDSs) for on-site detection. Discovery Studio (DS) and density functional theory (DFT) calculations were used for the "Prediction" step in order to estimate PDE-5 derivative structures and theoretical Raman shifts without synthesizing the derivatives. After 11 potentially bioactive sildenafil derivatives were acquired through DS, 32 common calculated Raman shifts were obtained through DFT. The mean absolute wavenumber deviation (δ, peak range) of the major bands and the minimum number (τ) of Raman spectral peaks matching the calculated common shifts were optimized, so that a positive result of an unknown sample could be reasonably produced. In this study, δ was set at ±10 cm-1 and the corresponding τ was set at 4-5 after optimization. Surface plasmon resonance (SPR) biosensor and surface-enhanced Raman scattering (SERS) detection were the "Confirmation" step to validate the reliability and accuracy of DS and DFT in the "Prediction" step, respectively. The optimized δ and τ criteria were used as indexes for on-site SERS detection after thin-layer chromatographic (TLC) separation of six real-world samples, one of which was preliminarily identified as "suspected positive samples." This strategy allows for a quick determination of the BDSs adulterated with sildenafil or its derivatives, independent of any standard materials.
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Affiliation(s)
- Diya Lv
- School of Pharmacy , Second Military Medical University , Shanghai , 200433 , China
| | - Yan Cao
- School of Pharmacy , Second Military Medical University , Shanghai , 200433 , China
| | - Langdong Chen
- School of Pharmacy , Second Military Medical University , Shanghai , 200433 , China
| | - Zhenyu Zhu
- School of Pharmacy , Second Military Medical University , Shanghai , 200433 , China
| | - Xiaofei Chen
- School of Pharmacy , Second Military Medical University , Shanghai , 200433 , China
| | - Dan Li
- Changhai Hospital , Second Military Medical University , Shanghai , 200433 , China
| | - Dongyao Wang
- School of Pharmacy , Second Military Medical University , Shanghai , 200433 , China
| | - Shujin Li
- Department of Chemistry , Suzhou University , Suzhou 215006 , China
| | - Yifeng Chai
- School of Pharmacy , Second Military Medical University , Shanghai , 200433 , China
| | - Feng Lu
- School of Pharmacy , Second Military Medical University , Shanghai , 200433 , China
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Wong CL, Chua M, Mittman H, Choo LX, Lim HQ, Olivo M. A Phase-Intensity Surface Plasmon Resonance Biosensor for Avian Influenza A (H5N1) Detection. SENSORS 2017; 17:s17102363. [PMID: 29035344 PMCID: PMC5677386 DOI: 10.3390/s17102363] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 09/29/2017] [Accepted: 10/11/2017] [Indexed: 12/30/2022]
Abstract
In this paper, we present a phase-intensity surface plasmon resonance (SPR) biosensor and demonstrate its use for avian influenza A (H5N1) antibody biomarker detection. The sensor probes the intensity variation produced by the steep phase response at surface plasmon excitation. The prism sensor head is fixed between a pair of polarizers with a perpendicular orientation angle and a forbidden transmission path. At SPR, a steep phase change is introduced between the p- and s-polarized light, and this rotates the polarization ellipse of the transmission beam. This allows the light at resonance to be transmitted and a corresponding intensity change to be detected. Neither time-consuming interference fringe analysis nor a phase extraction process is required. In refractive index sensing experiments, the sensor resolution was determined to be 6.3 × 10-6 refractive index values (RIU). The sensor has been further applied for H5N1 antibody biomarker detection, and the sensor resolution was determined to be 193.3 ng mL-1, compared to 1 μg mL-1 and 0.5 μg mL-1, as reported in literature for influenza antibody detection using commercial Biacore systems. It represents a 517.3% and 258.7% improvement in detection limit, respectively. With the unique features of label-free, real-time, and sensitive detection, the phase-intensity SPR biosensor has promising potential applications in influenza detection.
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Affiliation(s)
- Chi Lok Wong
- Bio-Optical Imaging Group, Singapore Bioimaging Consortium, Helios #01-02, 11 Biopolis Way, Singapore 138667, Singapore.
| | - Marissa Chua
- Bio-Optical Imaging Group, Singapore Bioimaging Consortium, Helios #01-02, 11 Biopolis Way, Singapore 138667, Singapore.
| | - Heather Mittman
- Bio-Optical Imaging Group, Singapore Bioimaging Consortium, Helios #01-02, 11 Biopolis Way, Singapore 138667, Singapore.
| | - Li Xian Choo
- Bio-Optical Imaging Group, Singapore Bioimaging Consortium, Helios #01-02, 11 Biopolis Way, Singapore 138667, Singapore.
| | - Hann Qian Lim
- Bio-Optical Imaging Group, Singapore Bioimaging Consortium, Helios #01-02, 11 Biopolis Way, Singapore 138667, Singapore.
| | - Malini Olivo
- Bio-Optical Imaging Group, Singapore Bioimaging Consortium, Helios #01-02, 11 Biopolis Way, Singapore 138667, Singapore.
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