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Chirvi S, Davé DP. Distributed interferometric fiber tip biosensors for a multi-channel and label-free biomolecular interaction analysis. APPLIED OPTICS 2023; 62:8535-8542. [PMID: 38037966 DOI: 10.1364/ao.500849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 10/15/2023] [Indexed: 12/02/2023]
Abstract
This paper describes fabrication and implementation of distributed optical fiber tip biosensor probes for simultaneously measuring label-free biomolecular interactions at multiple locations. Biosensor probes at the tip of a single-mode fiber are Fabry-Perot etalons that are functionalized with a capture layer for a specific biomolecule. A coherence multiplexing method is implemented to separate data collected from distributed biosensors in a single data stream. Multiplexing is achieved by using fiber tip biosensors of varying etalon lengths with the same or different capture layers for each biosensing channel. Experiments demonstrating simultaneous multi-channel recording of protein-to-protein interaction sensorgrams with fiber tip biosensor probes are presented.
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Shen Y, Huang Z, Huang F, He Y, Ye Z, Zhang H, Guo C. A Self-Reference Interference Sensor Based on Coherence Multiplexing. Front Chem 2022; 10:880081. [PMID: 35402379 PMCID: PMC8983844 DOI: 10.3389/fchem.2022.880081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 03/08/2022] [Indexed: 11/24/2022] Open
Abstract
Interferometry has been widely used in biosensing due to its ability to acquire molecular affinity and kinetics in real-time. However, interferometric-based sensors are susceptible to environmental disturbances, including temperature and non-specific binding of target molecules, which reduces their detection robustness. To address this shortcoming, this paper proposes a self-referencing interference sensor based on coherence multiplexing to resist environmental disturbances. The proposed sensor can address temperature and non-specific binding, but it is not limited only to these types of disturbances. In the proposed sensor design, each sensor signal is encoded using a specific optical path difference determined by the optical thickness of a sensor chip. In addition, two sensor signals for disturbances tracking and biomolecule detection are detected simultaneously without additional cost to the second spectrometer and then differenced to achieve real-time self-reference. The temperature fluctuations experiments and specific binding experiments of protein A to IgG are performed to verify the performance of the proposed sensor. The results demonstrate that the proposed sensor can eliminate non-specific binding and temperature disturbances in real-time during biomolecule detection, achieving higher detection robustness. The proposed sensor is suitable for applications that require large-scale testing of biomolecular interactions, such as drug screening.
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Affiliation(s)
- Ying Shen
- School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, China
| | - Zeyu Huang
- School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, China
| | - Feng Huang
- School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, China
| | - Yonghong He
- Shenzhen Key Laboratory for Minimal Invasive Medical Technologies, Institute of Optical Imaging and Sensing, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, China
| | - Ziling Ye
- School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, China
| | - Hongjian Zhang
- School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, China
| | - Cuixia Guo
- School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, China
- *Correspondence: Cuixia Guo,
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Lee S, Kim H. Crosslinking of Streptavidin–Biotinylated Bovine Serum Albumin Studied with Fluorescence Correlation Spectroscopy. B KOREAN CHEM SOC 2020. [DOI: 10.1002/bkcs.12164] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Sujin Lee
- Department of Chemistry, College of Science and Technology Duksung Women's University Seoul 01369 Republic of Korea
| | - Hahkjoon Kim
- Department of Chemistry, College of Science and Technology Duksung Women's University Seoul 01369 Republic of Korea
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Park G, Han D, Kim G, Shin S, Kim K, Park JK, Park Y. Visualization and label-free quantification of microfluidic mixing using quantitative phase imaging. APPLIED OPTICS 2017; 56:6341-6347. [PMID: 29047833 DOI: 10.1364/ao.56.006341] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Microfluidic mixing plays a key role in various fields, including biomedicine and chemical engineering. To date, although various approaches for imaging microfluidic mixing have been proposed, they provide only quantitative imaging capability and require exogenous labeling agents. Quantitative phase imaging techniques, however, circumvent these problems and offer label-free quantitative information about concentration maps of microfluidic mixing. We present the quantitative phase imaging of microfluidic mixing in various types of polydimethylsiloxane microfluidic channels with different geometries; the feasibility of the present method was validated by comparing it with the results obtained by theoretical calculation based on Fick's law.
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Ansari R, Buj C, Pieper M, König P, Schweikard A, Hüttmann G. Micro-anatomical and functional assessment of ciliated epithelium in mouse trachea using optical coherence phase microscopy. OPTICS EXPRESS 2015; 23:23217-24. [PMID: 26368424 DOI: 10.1364/oe.23.023217] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Motile cilia perform a range of important mechanosensory and chemosensory functions, along with expulsion of mucus and inhaled pathogens from the lungs. Here we demonstrate that spectral domain optical coherence phase microscopy (SD-OCPM), which combines the principles of optical coherence tomography (OCT) and confocal microscopy, is particularly well-suited for characterization of both morphology and the ciliary dynamics of mouse trachea. We present micro-anatomical images of mouse trachea, where different cell types can be clearly visualized. The phase contrast, which measures the sub-nanometer changes in axial optical pathlength is used to determine the frequency and direction of cilia beatings.
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Yoon J, Kwag J, Shin TJ, Park J, Lee YM, Lee Y, Park J, Heo J, Joo C, Park TJ, Yoo PJ, Kim S, Park J. Nanoparticles of conjugated polymers prepared from phase-separated films of phospholipids and polymers for biomedical applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:4559-4564. [PMID: 24789764 DOI: 10.1002/adma.201400906] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Revised: 03/26/2014] [Indexed: 06/03/2023]
Abstract
Phase separation in films of phospholipids and conjugated polymers results in nanoassemblies because of a difference in the physicochemical properties between the hydrophobic polymers and the polar lipid heads, together with the comparable polymer side-chain lengths to lipid tail lengths, thus producing nanoparticles of conjugated polymers upon disassembly in aqueous media by the penetration of water into polar regions of the lipid heads.
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Affiliation(s)
- Jungju Yoon
- School of Chemical Engineering and Materials Science, Department of Chemistry, Chung-Ang University, Seoul, 156-756, Republic of Korea
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Ryu S, Hyun KA, Heo J, Jung HI, Joo C. Label-free cell-based assay with spectral-domain optical coherence phase microscopy. JOURNAL OF BIOMEDICAL OPTICS 2014; 19:046003. [PMID: 24711152 DOI: 10.1117/1.jbo.19.4.046003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Accepted: 03/10/2014] [Indexed: 06/03/2023]
Abstract
Quantitative measurement of dynamic responses of unstained living cells is of great importance in many applications ranging from investigation of fundamental cellular functions to drug discoveries. Conventional optical methods for label-free cell-based assay examine cellular structural changes proximal to sensor surfaces under external stimuli, but require dedicated nanostructure-patterned substrates for operation. Here, we present a quantitative imaging method, spectral-domain optical coherence phase microscopy (SD-OCPM), as a viable optical platform for label-free cell-based assay. The instrument is based on a low-coherence interferometric microscope that enables quantitative depth-resolved phase measurement of a transparent specimen with high phase stability. We demonstrate SD-OCPM measurement of dynamic responses of human breast cancer cells (MCF-7) to 2-picolinic acid (PA) and histamine.
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Chandra H, Reddy PJ, Srivastava S. Protein microarrays and novel detection platforms. Expert Rev Proteomics 2014; 8:61-79. [DOI: 10.1586/epr.10.99] [Citation(s) in RCA: 117] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Ansari R, Myrtus C, Aherrahrou R, Erdmann J, Schweikard A, Hüttmann G. Ultrahigh-resolution, high-speed spectral domain optical coherence phase microscopy. OPTICS LETTERS 2014; 39:45-7. [PMID: 24365818 DOI: 10.1364/ol.39.000045] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
We present an ultrahigh-resolution, high-speed spectral domain optical coherence phase microscopy (SD-OCPM) system that combines submicrometer transverse spatial resolution and subnanometer optical path length sensitivity, with an acquisition speed of over 217,000 voxels/s. The proposed SD-OCPM system overcomes two significant drawbacks of traditional common-path interferometers-limited transverse spatial resolution and suboptimal detection sensitivity-while maintaining phase stability that is comparable with common-path interferometer setups. The transverse and axial spatial resolution of the setup is measured to be 0.6 and 1.9 μm, respectively, with a phase sensitivity of 0.0027 rad (corresponds to optical path length sensitivity of 110 pm). High-speed acquisition allows for phase-sensitive 4D imaging of biological samples with subcellular resolution.
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Wang T, Li Q, Li X, Zhao S, Lu Y, Huang G. Use of hyperspectral imaging for label-free decoding and detection of biomarkers. OPTICS LETTERS 2013; 38:1524-1526. [PMID: 23632539 DOI: 10.1364/ol.38.001524] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Detecting the existence of biomarkers is one of the most important issues in molecular diagnosis. This Letter presents a label-free decoding and detection method for biomarker tests based on hyperspectral imaging and interferometry. The decoding and detection results were extracted from a single hyperspectral image with different spectrum-to-thickness reconstructing algorithms, which made the testing procedure extremely fast and simple. The coding capacity of this method is more than 400, and the detection sensitivity can reach 2 ng/mm2 without fluorescent labeling.
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Affiliation(s)
- Tongzhou Wang
- Department of Biomedical Engineering, Tsinghua University School of Medicine, Beijing 100084, China
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Chirvi S, Qiang Z, Davé DP. Coherence-multiplexed, label-free biomolecular interaction analysis. OPTICS LETTERS 2012; 37:2952-2954. [PMID: 22825189 DOI: 10.1364/ol.37.002952] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
This Letter describes an interferometric technique based on the principle of coherence multiplexing for multichannel, label-free biosensing applications. Multiple biosensors can be interrogated simultaneously with a single spectral-domain, phase-sensitive interferometer by coding the individual sensograms in coherence-multiplexed channels. The experimental results demonstrate the multiplexed quantitative biomolecular interaction of antibodies binding to antigen-coated functionalized biosensor chip surfaces. The described technique also applies to a variety of other distributed and multiplexed sensing applications besides biosensing.
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Affiliation(s)
- Sajal Chirvi
- Department of Bioengineering, University of Texas, Arlington, Texas 76010, USA
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Ray S, Mehta G, Srivastava S. Label-free detection techniques for protein microarrays: prospects, merits and challenges. Proteomics 2010; 10:731-48. [PMID: 19953541 PMCID: PMC7167936 DOI: 10.1002/pmic.200900458] [Citation(s) in RCA: 124] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Protein microarrays, on which thousands of discrete proteins are printed, provide a valuable platform for functional analysis of the proteome. They have been widely used for biomarker discovery and to study protein–protein interactions. The accomplishments of DNA microarray technology, which had enabled massive parallel studies of gene expression, sparked great interest for the development of protein microarrays to achieve similar success at the protein level. Protein microarray detection techniques are often classified as being label‐based and label‐free. Most of the microarray applications have employed labelled detection such as fluorescent, chemiluminescent and radioactive labelling. These labelling strategies have synthetic challenges, multiple label issues and may exhibit interference with the binding site. Therefore, development of sensitive, reliable, high‐throughput, label‐free detection techniques are now attracting significant attention. Label‐free detection techniques monitor biomolecular interactions and simplify the bioassays by eliminating the need for secondary reactants. Moreover, they provide quantitative information for the binding kinetics. In this article, we will review several label‐free techniques, which offer promising applications for the protein microarrays, and discuss their prospects, merits and challenges.
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Affiliation(s)
- Sandipan Ray
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai, India
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