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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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Liang S, Cai C, Gao R, Zhang M, Xue N, Qi ZM. AuAg alloy film-based colorful SPR imaging sensor for highly sensitive immunodetection of benzo[a]pyrene in water. APPLIED OPTICS 2019; 58:6942-6948. [PMID: 31503666 DOI: 10.1364/ao.58.006942] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 08/06/2019] [Indexed: 06/10/2023]
Abstract
A colorful surface plasmon resonance imaging (SPRi) sensor with the hue-based enhanced sensitivity has been developed by using sputtered AuAg alloy thin film as the sensing layer. The condition for optimizing the hue-based sensitivity of the SPRi sensor was achieved, that is, the initial resonance wavelength is in the range from 595 to 610 nm. Under this condition, the hue-based refractive index sensitivity of the SPRi sensor was measured as high as Δhue/Δnc=29879/RIU. This sensitivity is 8 times higher than that obtained with a gold-layer SPRi sensor (Δhue/Δnc=3658/RIU) and 7.7 times as high in magnitude as the spectral sensitivity of the same sensor (ΔλR/Δnc=3897.6 nm/RIU). After functionalization of the AuAg alloy film with the monoclonal antibody, the sensor was used for quantitative immunodetection of highly carcinogenic benzo[a]pyrene (BaP) in water. According to the experimental results, the average hue of the SPR color image (300 pixels×300 pixels) experiences an initial rapid increase and then stabilizes 15 min after exposure of the functionalized AuAg alloy film to an aqueous BaP solution sample. The variation of average hue obtained at the equilibrium of surface immunoreaction is a linear function of BaP concentration with the slope being Δhue/Δc=132.2/(μg·L-1). A cooled CCD camera is able to distinguish a change of Δhue=1, offering the colorful SPRi sensor the BaP detection limit of 0.01 μg·L-1. The comparative measurements of the sensor's responses indicate that the hue variation obtained with 0.1 μg·L-1 of BaP is equal to that obtained either with 5 μg·L-1 of benzanthracene or with 5 μg·L-1 of benzofluoranthene, revealing the sensor's excellent specificity to BaP. The work demonstrated that the AuAg alloy film-based colorful SPRi sensor can be used not only for visualized analysis of molecular interaction at the surface but also for quantitative trace detection of small-molecule analytes.
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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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Cappi G, Spiga FM, Moncada Y, Ferretti A, Beyeler M, Bianchessi M, Decosterd L, Buclin T, Guiducci C. Label-free detection of tobramycin in serum by transmission-localized surface plasmon resonance. Anal Chem 2015; 87:5278-85. [PMID: 25811093 DOI: 10.1021/acs.analchem.5b00389] [Citation(s) in RCA: 96] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
In order to improve the efficacy and safety of treatments, drug dosage needs to be adjusted to the actual needs of each patient in a truly personalized medicine approach. Key for widespread dosage adjustment is the availability of point-of-care devices able to measure plasma drug concentration in a simple, automated, and cost-effective fashion. In the present work, we introduce and test a portable, palm-sized transmission-localized surface plasmon resonance (T-LSPR) setup, comprised of off-the-shelf components and coupled with DNA-based aptamers specific to the antibiotic tobramycin (467 Da). The core of the T-LSPR setup are aptamer-functionalized gold nanoislands (NIs) deposited on a glass slide covered with fluorine-doped tin oxide (FTO), which acts as a biosensor. The gold NIs exhibit localized plasmon resonance in the visible range matching the sensitivity of the complementary metal oxide semiconductor (CMOS) image sensor employed as a light detector. The combination of gold NIs on the FTO substrate, causing NIs size and pattern irregularity, might reduce the overall sensitivity but confers extremely high stability in high-ionic solutions, allowing it to withstand numerous regeneration cycles without sensing losses. With this rather simple T-LSPR setup, we show real-time label-free detection of tobramycin in buffer, measuring concentrations down to 0.5 μM. We determined an affinity constant of the aptamer-tobramycin pair consistent with the value obtained using a commercial propagating-wave based SPR. Moreover, our label-free system can detect tobramycin in filtered undiluted blood serum, measuring concentrations down to 10 μM with a theoretical detection limit of 3.4 μM. While the association signal of tobramycin onto the aptamer is masked by the serum injection, the quantification of the captured tobramycin is possible during the dissociation phase and leads to a linear calibration curve for the concentrations over the tested range (10-80 μM). The plasmon shift following surface binding is calculated in terms of both plasmon peak location and hue, with the latter allowing faster data elaboration and real-time display of the results. The presented T-LSPR system shows for the first time label-free direct detection and quantification of a small molecule in the complex matrix of filtered undiluted blood serum. Its uncomplicated construction and compact size, together with the remarkable performances, represent a leap forward toward effective point-of-care devices for therapeutic drug concentration monitoring.
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Affiliation(s)
- Giulia Cappi
- †Institute of Bioengineering, École polytechnique fédérale de Lausanne, Lausanne, CH-1015 Switzerland
| | - Fabio M Spiga
- †Institute of Bioengineering, École polytechnique fédérale de Lausanne, Lausanne, CH-1015 Switzerland
| | - Yessica Moncada
- ‡Bio-Lab, STMicroelectronics, Agrate Brianza, Monza and Brianza, 20864, Italy
| | - Anna Ferretti
- †Institute of Bioengineering, École polytechnique fédérale de Lausanne, Lausanne, CH-1015 Switzerland
| | - Michael Beyeler
- †Institute of Bioengineering, École polytechnique fédérale de Lausanne, Lausanne, CH-1015 Switzerland
| | - Marco Bianchessi
- ‡Bio-Lab, STMicroelectronics, Agrate Brianza, Monza and Brianza, 20864, Italy
| | - Laurent Decosterd
- §Laboratory and Division of Clinical Pharmacology, Lausanne University Hospital (CHUV), Lausanne, CH-1011 Switzerland
| | - Thierry Buclin
- §Laboratory and Division of Clinical Pharmacology, Lausanne University Hospital (CHUV), Lausanne, CH-1011 Switzerland
| | - Carlotta Guiducci
- †Institute of Bioengineering, École polytechnique fédérale de Lausanne, Lausanne, CH-1015 Switzerland
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Wong CL, Dinish U, Olivo M. Recent advances in SPR and SERS for sensitive translational medical diagnostics. ACTA ACUST UNITED AC 2015. [DOI: 10.1515/plm-2014-0009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractPersonalized medicine is revolutionizing modern health care. The aim of personalized diagnostics is to provide rapid, portable and simple tests that will reduce diagnosis time. They enable rapid analysis performed near the patient and provide specific details of the patient’s condition so that a personalized treatment can be made. This review focuses on the recent advances in optical diagnostic techniques based on surface plasmon resonance (SPR) and surface-enhanced Raman scattering spectroscopy (SERS) for translational medical diagnostics. In the first part, recent developments in SPR biosensors for infectious disease diagnosis are presented including the first two-dimensional multiplex influenza SPR biosensor for H1N1 (influenza A) and H3N2 (seasonal influenza) detection. In the second part, advances in SERS, which is another ultra-sensitive optical diagnostic technique for various cancer detection applications in pre-clinical and clinical settings, are reviewed.
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Wong CL, Dinish US, Schmidt MS, Olivo M. Non-labeling multiplex surface enhanced Raman scattering (SERS) detection of volatile organic compounds (VOCs). Anal Chim Acta 2014; 844:54-60. [PMID: 25172816 DOI: 10.1016/j.aca.2014.06.043] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Revised: 06/17/2014] [Accepted: 06/24/2014] [Indexed: 11/24/2022]
Abstract
In this paper, we report multiplex SERS based VOCs detection with a leaning nano-pillar substrate. The VOCs analyte molecules adsorbed at the tips of the nano-pillars produced SERS signal due to the field enhancement occurring at the localized surface plasmon hot spots between adjacent leaning nano-pillars. In this experiment, detections of acetone and ethanol vapor at different concentrations were demonstrated. The detection limits were found to be 0.0017 ng and 0.0037 ng for ethanol and acetone vapor molecules respectively. Our approach is a non-labeling method such that it does not require the incorporation of any chemical sensing layer for the enrichment of gas molecules on sensor surface. The leaning nano-pillar substrate also showed highly reproducible SERS signal in cyclic VOCs detection, which can reduce the detection cost in practical applications. Further, multiplex SERS detection on different combination of acetone and ethanol vapor was also successfully demonstrated. The vibrational fingerprints of molecular structures provide specific Raman peaks for different VOCs contents. To the best of our knowledge, this is the first multiplex VOCs detection using SERS. We believe that this work may lead to a portable device for multiplex, specific and highly sensitive detection of complex VOCs samples that can find potential applications in exhaled breath analysis, hazardous gas analysis, homeland security and environmental monitoring.
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Affiliation(s)
- Chi Lok Wong
- Bio-optical Imaging Group, Singapore Bioimaging Consortium, Helios #01-02, 11 Biopolis Way, Singapore
| | - U S Dinish
- Bio-optical Imaging Group, Singapore Bioimaging Consortium, Helios #01-02, 11 Biopolis Way, Singapore
| | - Michael Stenbæk Schmidt
- Department of Micro and Nanotechnology, Technical University of Denmark Ørsteds Plads, Building 345 East, DK-2800 Kongens Lyngby, Denmark
| | - Malini Olivo
- Bio-optical Imaging Group, Singapore Bioimaging Consortium, Helios #01-02, 11 Biopolis Way, Singapore; School of Physics, National University of Ireland, Galway, County Galway, Ireland.
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Wong CL, Chen GCK, Li X, Ng BK, Shum P, Chen P, Lin Z, Lin C, Olivo M. Colorimetric surface plasmon resonance imaging (SPRI) biosensor array based on polarization orientation. Biosens Bioelectron 2013; 47:545-52. [DOI: 10.1016/j.bios.2013.02.040] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Revised: 02/06/2013] [Accepted: 02/22/2013] [Indexed: 10/27/2022]
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Wong CL, Chen GCK, Ng BK, Agarwal S, Lin Z, Chen P, Ho HP. Multiplex spectral surface plasmon resonance imaging (SPRI) sensor based on the polarization control scheme. OPTICS EXPRESS 2011; 19:18965-18978. [PMID: 21996838 DOI: 10.1364/oe.19.018965] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A two-dimensional (2D) spectral SPR sensor based on a polarization control scheme is reported in this paper. The polarization control configuration converts the phase difference between p- and s- polarization occurring at surface plasmon resonance (SPR) into corresponding color responses in spectral SPR images. A sensor resolution of 2.7 x 10(-6) RIU has been demonstrated, which corresponds to more than one order of magnitude resolution improvement (26 times) comparing to existing 2D spectral SPR sensors. Multiplex array detection has also been demonstrated with the spectral SPR imaging sensor. In a 8 x 4 sensor array, 32 samples with different refractive index values were monitored simultaneously. Detection on bovine serum albumin (BSA) antigen-antibody binding further demonstrated the multiplex detection capability of the 2D spectral SPR sensor for bio-molecular interactions. The detection limit is found to be 21 ng/ml, which is 36 times better than the detection limit previously reported by phase imaging SPR sensors. In light of the advantages of high sensitivity, 2D multiplex detection and real-time response, the spectral SPR imaging sensor can find promising applications in rapid, high throughput, non-labeling and multiplex detection of protein array for proteomics studies, biomarker screening, disease prognosis, and drug discovery.
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Affiliation(s)
- Chi Lok Wong
- Division of Microelectronics, School of Electrical & Electronic Engineering, Nanyang Technological University, 50 Nanyang Drive, Singapore 639798, Singapore.
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