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Reja SI, Minoshima M, Hori Y, Kikuchi K. Recent advancements of fluorescent biosensors using semisynthetic probes. Biosens Bioelectron 2024; 247:115862. [PMID: 38147718 DOI: 10.1016/j.bios.2023.115862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 11/07/2023] [Accepted: 11/17/2023] [Indexed: 12/28/2023]
Abstract
Fluorescent biosensors are crucial experimental tools for live-cell imaging and the quantification of different biological analytes. Fluorescent protein (FP)-based biosensors are widely used for imaging applications in living systems. However, the use of FP-based biosensors is hindered by their large size, poor photostability, and laborious genetic manipulations required to improve their properties. Recently, semisynthetic fluorescent biosensors have been developed to address the limitations of FP-based biosensors using chemically modified fluorescent probes and self-labeling protein tag/peptide tags or DNA/RNA-based hybrid systems. Semisynthetic biosensors have unique advantages, as they can be easily modified using different probes. Moreover, the self-labeling protein tag, which labels synthetically developed ligands via covalent bonds, has immense potential for biosensor development. This review discusses the recent progress in different types of fluorescent biosensors for metabolites, protein aggregation and degradation, DNA methylation, endocytosis and exocytosis, membrane tension, and cellular viscosity. Here, we explain in detail the design strategy and working principle of these biosensors. The information presented will help the reader to create new biosensors using self-labeling protein tags for various applications.
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Affiliation(s)
- Shahi Imam Reja
- Immunology Frontier Research Center (IFReC), Osaka University, Suita, Osaka, 565-0871, Japan
| | - Masafumi Minoshima
- Division of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Yuichiro Hori
- Department of Chemistry, Faculty of Science, Kyushu University, Fukuoka, 819-0395, Japan
| | - Kazuya Kikuchi
- Immunology Frontier Research Center (IFReC), Osaka University, Suita, Osaka, 565-0871, Japan; Division of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka, 565-0871, Japan.
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2
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Zhang D, Qiao L. Microfluidics Coupled Mass Spectrometry for Single Cell Multi-Omics. SMALL METHODS 2024; 8:e2301179. [PMID: 37840412 DOI: 10.1002/smtd.202301179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 10/02/2023] [Indexed: 10/17/2023]
Abstract
Population-level analysis masks significant heterogeneity between individual cells, making it difficult to accurately reflect the true intricacies of life activities. Microfluidics is a technique that can manipulate individual cells effectively and is commonly coupled with a variety of analytical methods for single-cell analysis. Single-cell omics provides abundant molecular information at the single-cell level, fundamentally revealing differences in cell types and biological states among cell individuals, leading to a deeper understanding of cellular phenotypes and life activities. Herein, this work summarizes the microfluidic chips designed for single-cell isolation, manipulation, trapping, screening, and sorting, including droplet microfluidic chips, microwell arrays, hydrodynamic microfluidic chips, and microchips with microvalves. This work further reviews the studies on single-cell proteomics, metabolomics, lipidomics, and multi-omics based on microfluidics and mass spectrometry. Finally, the challenges and future application of single-cell multi-omics are discussed.
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Affiliation(s)
- Dongxue Zhang
- Department of Chemistry, Institutes of Biomedical Sciences, and Minhang Hospital, Fudan University, Shanghai, 20000, China
| | - Liang Qiao
- Department of Chemistry, Institutes of Biomedical Sciences, and Minhang Hospital, Fudan University, Shanghai, 20000, China
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3
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Hua P, Ding Z, Liu K, Guo H, Pan M, Zhang T, Li S, Jiang J, Liu T. Distributed optical fiber biosensor based on optical frequency domain reflectometry. Biosens Bioelectron 2023; 228:115184. [PMID: 36878065 DOI: 10.1016/j.bios.2023.115184] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 02/09/2023] [Accepted: 02/25/2023] [Indexed: 03/05/2023]
Abstract
In situ acquisition of spatial distribution of biochemical substances is important in cell analysis, cancer detection and other fields. Optical fiber biosensors can achieve label-free, fast and accurate measurements. However, current optical fiber biosensors only acquire single-point of biochemical substance content. In this paper, we present a distributed optical fiber biosensor based on tapered fiber in optical frequency domain reflectometry (OFDR) for the first time. To enhance evanescent field at a relative long sensing range, we fabricate a tapered fiber with a taper waist diameter of 6 μm and a total stretching length of 140 mm. Then the human IgG layer is coated on the entire tapered region by polydopamine (PDA) -assisted immobilization as the sensing element to achieve to sense anti-human IgG. We measure shifts of the local Rayleigh backscattering spectra (RBS) caused by the refractive index (RI) change of an external medium surrounding a tapered fiber after immunoaffinity interactions by using OFDR. The measurable concentration of anti-human IgG and RBS shift has an excellent linearity in a range from 0 ng/ml to 14 ng/ml with an effective sensing range of 50 mm. The concentration measurement limit of the proposed distributed biosensor is 2 ng/ml for anti-human IgG. Distributed biosensing based on OFDR can locate a concentration change of anti-human IgG with an ultra-high sensing spatial resolution of 680 μm. The proposed sensor has a potential to realize a micron-level localization of biochemical substances such as cancer cells, which will open a door to transform single-point biosensor to distributed biosensor.
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Affiliation(s)
- Peidong Hua
- School of Precision Instruments and Opto-Electronics Engineering, Tianjin University, Tianjin, 300072, China; Tianjin Optical Fiber Sensing Engineering Center, Institute of Optical Fiber Sensing of Tianjin University, Tianjin, 300072, China; Key Laboratory of Opto-electronics Information Technology (Tianjin University), Ministry of Education, Tianjin, 300072, China
| | - Zhenyang Ding
- School of Precision Instruments and Opto-Electronics Engineering, Tianjin University, Tianjin, 300072, China; Tianjin Optical Fiber Sensing Engineering Center, Institute of Optical Fiber Sensing of Tianjin University, Tianjin, 300072, China; Key Laboratory of Opto-electronics Information Technology (Tianjin University), Ministry of Education, Tianjin, 300072, China.
| | - Kun Liu
- School of Precision Instruments and Opto-Electronics Engineering, Tianjin University, Tianjin, 300072, China; Tianjin Optical Fiber Sensing Engineering Center, Institute of Optical Fiber Sensing of Tianjin University, Tianjin, 300072, China; Key Laboratory of Opto-electronics Information Technology (Tianjin University), Ministry of Education, Tianjin, 300072, China
| | - Haohan Guo
- School of Precision Instruments and Opto-Electronics Engineering, Tianjin University, Tianjin, 300072, China; Tianjin Optical Fiber Sensing Engineering Center, Institute of Optical Fiber Sensing of Tianjin University, Tianjin, 300072, China; Key Laboratory of Opto-electronics Information Technology (Tianjin University), Ministry of Education, Tianjin, 300072, China
| | - Ming Pan
- School of Precision Instruments and Opto-Electronics Engineering, Tianjin University, Tianjin, 300072, China; Tianjin Optical Fiber Sensing Engineering Center, Institute of Optical Fiber Sensing of Tianjin University, Tianjin, 300072, China; Key Laboratory of Opto-electronics Information Technology (Tianjin University), Ministry of Education, Tianjin, 300072, China
| | - Teng Zhang
- School of Precision Instruments and Opto-Electronics Engineering, Tianjin University, Tianjin, 300072, China; Tianjin Optical Fiber Sensing Engineering Center, Institute of Optical Fiber Sensing of Tianjin University, Tianjin, 300072, China; Key Laboratory of Opto-electronics Information Technology (Tianjin University), Ministry of Education, Tianjin, 300072, China
| | - Sheng Li
- School of Precision Instruments and Opto-Electronics Engineering, Tianjin University, Tianjin, 300072, China; Tianjin Optical Fiber Sensing Engineering Center, Institute of Optical Fiber Sensing of Tianjin University, Tianjin, 300072, China; Key Laboratory of Opto-electronics Information Technology (Tianjin University), Ministry of Education, Tianjin, 300072, China
| | - Junfeng Jiang
- School of Precision Instruments and Opto-Electronics Engineering, Tianjin University, Tianjin, 300072, China; Tianjin Optical Fiber Sensing Engineering Center, Institute of Optical Fiber Sensing of Tianjin University, Tianjin, 300072, China; Key Laboratory of Opto-electronics Information Technology (Tianjin University), Ministry of Education, Tianjin, 300072, China
| | - Tiegen Liu
- School of Precision Instruments and Opto-Electronics Engineering, Tianjin University, Tianjin, 300072, China; Tianjin Optical Fiber Sensing Engineering Center, Institute of Optical Fiber Sensing of Tianjin University, Tianjin, 300072, China; Key Laboratory of Opto-electronics Information Technology (Tianjin University), Ministry of Education, Tianjin, 300072, China
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4
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Cupil-Garcia V, Li JQ, Norton SJ, Odion RA, Strobbia P, Menozzi L, Ma C, Hu J, Zentella R, Boyanov MI, Finfrock YZ, Gursoy D, Douglas DS, Yao J, Sun TP, Kemner KM, Vo-Dinh T. Plasmonic nanorod probes' journey inside plant cells for in vivo SERS sensing and multimodal imaging. NANOSCALE 2023; 15:6396-6407. [PMID: 36924128 DOI: 10.1039/d2nr06235f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Nanoparticle-based platforms are gaining strong interest in plant biology and bioenergy research to monitor and control biological processes in whole plants. However, in vivo monitoring of biomolecules using nanoparticles inside plant cells remains challenging due to the impenetrability of the plant cell wall to nanoparticles beyond the exclusion limits (5-20 nm). To overcome this physical barrier, we have designed unique bimetallic silver-coated gold nanorods (AuNR@Ag) capable of entering plant cells, while conserving key plasmonic properties in the near-infrared (NIR). To demonstrate cellular internalization and tracking of the nanorods inside plant tissue, we used a comprehensive multimodal imaging approach that included transmission electron microscopy (TEM), confocal fluorescence microscopy, two-photon luminescence (TPL), X-ray fluorescence microscopy (XRF), and photoacoustics imaging (PAI). We successfully acquired SERS signals of nanorods in vivo inside plant cells of tobacco leaves. On the same leaf samples, we applied orthogonal imaging methods, TPL and PAI techniques for in vivo imaging of the nanorods. This study first demonstrates the intracellular internalization of AuNR@Ag inside whole plant systems for in vivo SERS analysis in tobacco cells. This work demonstrates the potential of this nanoplatform as a new nanotool for intracellular in vivo biosensing for plant biology.
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Affiliation(s)
- Vanessa Cupil-Garcia
- Fitzpatrick Institute for Photonics, Durham, NC 27706, USA.
- Department of Chemistry, Duke University, Durham, NC 27706, USA
| | - Joy Q Li
- Fitzpatrick Institute for Photonics, Durham, NC 27706, USA.
- Department of Biomedical Engineering, Duke University, Durham, NC 27706, USA
| | | | - Ren A Odion
- Fitzpatrick Institute for Photonics, Durham, NC 27706, USA.
- Department of Biomedical Engineering, Duke University, Durham, NC 27706, USA
| | - Pietro Strobbia
- Fitzpatrick Institute for Photonics, Durham, NC 27706, USA.
- Department of Biomedical Engineering, Duke University, Durham, NC 27706, USA
| | - Luca Menozzi
- Fitzpatrick Institute for Photonics, Durham, NC 27706, USA.
- Department of Biomedical Engineering, Duke University, Durham, NC 27706, USA
| | - Chenshuo Ma
- Fitzpatrick Institute for Photonics, Durham, NC 27706, USA.
- Department of Biomedical Engineering, Duke University, Durham, NC 27706, USA
| | - Jianhong Hu
- Department of Biology, Duke University, Durham, NC 27706, USA
| | | | - Maxim I Boyanov
- Bulgarian Academy of Sciences, Institute of Chemical Engineering, Sofia 1113, Bulgaria
- Biosciences Division, Argonne National Laboratory, Argonne, IL 60439, USA
| | - Y Zou Finfrock
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Lemont, IL 60439, USA
| | - Doga Gursoy
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Lemont, IL 60439, USA
- Department of Electrical Engineering and Computer Science, Northwestern University, Evanston, IL 60208, USA
| | | | - Junjie Yao
- Fitzpatrick Institute for Photonics, Durham, NC 27706, USA.
- Department of Biomedical Engineering, Duke University, Durham, NC 27706, USA
| | - Tai-Ping Sun
- Department of Biology, Duke University, Durham, NC 27706, USA
| | - Kenneth M Kemner
- Biosciences Division, Argonne National Laboratory, Argonne, IL 60439, USA
| | - Tuan Vo-Dinh
- Fitzpatrick Institute for Photonics, Durham, NC 27706, USA.
- Department of Chemistry, Duke University, Durham, NC 27706, USA
- Department of Biomedical Engineering, Duke University, Durham, NC 27706, USA
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5
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Yong MJ, Kang B, Yang U, Oh SS, Je JH. Live Streaming of a Single Cell's Life over a Local pH-Monitoring Nanowire Waveguide. NANO LETTERS 2022; 22:6375-6382. [PMID: 35877544 PMCID: PMC9372996 DOI: 10.1021/acs.nanolett.2c02185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 07/20/2022] [Indexed: 06/15/2023]
Abstract
Spatiotemporal pH monitoring of single living cells across rigid cell and organelle membranes has been challenging, despite its significance in understanding cellular heterogeneity. Here, we developed a mechanically robust yet tolerably thin nanowire waveguide that enables in situ monitoring of pH dynamics at desired cellular compartments via direct optical communication. By chemically labeling fluorescein at one end of a poly(vinylbenzyl azide) nanowire, we continuously monitored pH variations of different compartments inside a living cell, successfully observing organelle-exclusive pH homeostasis and stimuli-selective pH regulations. Importantly, it was demonstrated for the first time that, during the mammalian cell cycle, the nucleus displays pH homeostasis in interphase but a tidal pH curve in the mitotic phase, implying the existence of independent pH-regulating activities by the nuclear envelope. The rapid and accurate local pH-reporting capability of our nanowire waveguide would be highly valuable for investigating cellular behaviors under diverse biological situations in living cells.
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Affiliation(s)
- Moon-Jung Yong
- X-ray
Imaging Center and Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk 37673, South Korea
| | - Byunghwa Kang
- X-ray
Imaging Center and Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk 37673, South Korea
| | - Un Yang
- X-ray
Imaging Center and Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk 37673, South Korea
| | - Seung Soo Oh
- X-ray
Imaging Center and Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk 37673, South Korea
| | - Jung Ho Je
- X-ray
Imaging Center and Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk 37673, South Korea
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6
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Chen N, He Y, Zang M, Zhang Y, Lu H, Zhao Q, Wang S, Gao Y. Approaches and materials for endocytosis-independent intracellular delivery of proteins. Biomaterials 2022; 286:121567. [DOI: 10.1016/j.biomaterials.2022.121567] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 04/26/2022] [Accepted: 05/03/2022] [Indexed: 12/12/2022]
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Hur J, Chung AJ. Microfluidic and Nanofluidic Intracellular Delivery. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2004595. [PMID: 34096197 PMCID: PMC8336510 DOI: 10.1002/advs.202004595] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 04/14/2021] [Indexed: 05/05/2023]
Abstract
Innate cell function can be artificially engineered and reprogrammed by introducing biomolecules, such as DNAs, RNAs, plasmid DNAs, proteins, or nanomaterials, into the cytosol or nucleus. This process of delivering exogenous cargos into living cells is referred to as intracellular delivery. For instance, clustered regularly interspaced short palindromic repeats (CRISPR)-Cas9 gene editing begins with internalizing Cas9 protein and guide RNA into cells, and chimeric antigen receptor-T (CAR-T) cells are prepared by delivering CAR genes into T lymphocytes for cancer immunotherapies. To deliver external biomolecules into cells, tools, including viral vectors, and electroporation have been traditionally used; however, they are suboptimal for achieving high levels of intracellular delivery while preserving cell viability, phenotype, and function. Notably, as emerging solutions, microfluidic and nanofluidic approaches have shown remarkable potential for addressing this open challenge. This review provides an overview of recent advances in microfluidic and nanofluidic intracellular delivery strategies and discusses new opportunities and challenges for clinical applications. Furthermore, key considerations for future efforts to develop microfluidics- and nanofluidics-enabled next-generation intracellular delivery platforms are outlined.
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Affiliation(s)
- Jeongsoo Hur
- School of Biomedical EngineeringKorea UniversitySeoul02841Republic of Korea
| | - Aram J. Chung
- School of Biomedical EngineeringInterdisciplinary Program in Precision Public HealthKorea UniversitySeoul02841Republic of Korea
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8
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Li Y, Liu X, Li B. Single-cell biomagnifier for optical nanoscopes and nanotweezers. LIGHT, SCIENCE & APPLICATIONS 2019; 8:61. [PMID: 31645911 PMCID: PMC6804537 DOI: 10.1038/s41377-019-0168-4] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 05/30/2019] [Accepted: 06/02/2019] [Indexed: 05/21/2023]
Abstract
Optical microscopes and optical tweezers, which were invented to image and manipulate microscale objects, have revolutionized cellular and molecular biology. However, the optical resolution is hampered by the diffraction limit; thus, optical microscopes and optical tweezers cannot be directly used to image and manipulate nano-objects. The emerging plasmonic/photonic nanoscopes and nanotweezers can achieve nanometer resolution, but the high-index material structures will easily cause mechanical and photothermal damage to biospecimens. Here, we demonstrate subdiffraction-limit imaging and manipulation of nano-objects by a noninvasive device that was constructed by trapping a cell on a fiber tip. The trapped cell, acting as a biomagnifier, could magnify nanostructures with a resolution of 100 nm (λ/5.5) under white-light microscopy. The focus of the biomagnifier formed a nano-optical trap that allowed precise manipulation of an individual nanoparticle with a radius of 50 nm. This biomagnifier provides a high-precision tool for optical imaging, sensing, and assembly of bionanomaterials.
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Affiliation(s)
- Yuchao Li
- Institute of Nanophotonics, Jinan University, 511443 Guangzhou, China
| | - Xiaoshuai Liu
- Institute of Nanophotonics, Jinan University, 511443 Guangzhou, China
| | - Baojun Li
- Institute of Nanophotonics, Jinan University, 511443 Guangzhou, China
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9
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Strobbia P, Ran Y, Crawford BM, Cupil-Garcia V, Zentella R, Wang HN, Sun TP, Vo-Dinh T. Inverse Molecular Sentinel-Integrated Fiberoptic Sensor for Direct and in Situ Detection of miRNA Targets. Anal Chem 2019; 91:6345-6352. [PMID: 30916925 DOI: 10.1021/acs.analchem.9b01350] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Molecular advances have been made in analysis systems for a wide variety of applications ranging from biodiagnostics, biosafety, bioengineering, and biofuel research applications. There are, however, limited practical tools necessary for in situ and accurate detection of nucleic acid targets during field work. New technology is needed to translate these molecular advances from laboratory settings into the real-life practical monitoring realm. The exquisite characteristics (e.g., sensitivity and adaptability) of plasmonic nanosensors have made them attractive candidates for field-ready sensing applications. Herein, we have developed a fiber-based plasmonic sensor capable of direct detection (i.e., no washing steps required) of nucleic acid targets, which can be detected simply by immerging the sensor in the sample solution. This sensor is composed of an optical fiber that is decorated with plasmonic nanoprobes based on silver-coated gold nanostars (AuNS@Ag) to detect target nucleic acids using the surface-enhanced Raman scattering (SERS) sensing mechanism of nanoprobes referred to as inverse molecular sentinels (iMS). These fiber-optrodes can be reused for several detection-regeneration cycles (>6). The usefulness and applicability of the iMS fiber-sensors was tested by detecting target miRNA in extracts from leaves of plants that were induced to have different expression levels of miRNA targets. These fiber-optrodes enable direct detection of miRNA in plant tissue extract without the need for complex assays by simply immersing the fiber in the sample solution. The results indicate the fiber-based sensors developed herein have the potential to be a powerful tool for field and in situ analysis of nucleic acid samples.
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Affiliation(s)
- Pietro Strobbia
- Fitzpatrick Institute for Photonics , Duke University , Durham , North Carolina 27708 , United States
- Department of Biomedical Engineering , Duke University , Durham , North Carolina 27708 , United States
| | - Yang Ran
- Fitzpatrick Institute for Photonics , Duke University , Durham , North Carolina 27708 , United States
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology , Jinan University , Guangzhou 510632 , China
| | - Bridget M Crawford
- Fitzpatrick Institute for Photonics , Duke University , Durham , North Carolina 27708 , United States
- Department of Biomedical Engineering , Duke University , Durham , North Carolina 27708 , United States
| | - Vanessa Cupil-Garcia
- Fitzpatrick Institute for Photonics , Duke University , Durham , North Carolina 27708 , United States
- Department of Chemistry , Duke University , Durham , North Carolina 27708 , United States
| | - Rodolfo Zentella
- Department of Biology , Duke University , Durham , North Carolina 27708 , United States
| | - Hsin-Neng Wang
- Fitzpatrick Institute for Photonics , Duke University , Durham , North Carolina 27708 , United States
- Department of Biomedical Engineering , Duke University , Durham , North Carolina 27708 , United States
| | - Tai-Ping Sun
- Department of Biology , Duke University , Durham , North Carolina 27708 , United States
| | - Tuan Vo-Dinh
- Fitzpatrick Institute for Photonics , Duke University , Durham , North Carolina 27708 , United States
- Department of Biomedical Engineering , Duke University , Durham , North Carolina 27708 , United States
- Department of Chemistry , Duke University , Durham , North Carolina 27708 , United States
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10
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Li Y, Xin H, Zhang Y, Lei H, Zhang T, Ye H, Saenz JJ, Qiu CW, Li B. Living Nanospear for Near-Field Optical Probing. ACS NANO 2018; 12:10703-10711. [PMID: 30265516 DOI: 10.1021/acsnano.8b05235] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Optical nanoprobes, designed to emit or collect light in the close proximity of a sample, have been extensively used to sense and image at nanometer resolution. However, the available nanoprobes, constructed from artificial materials, are incompatible and invasive when interfacing with biological systems. In this work, we report a fully biocompatible nanoprobe for subwavelength probing of localized fluorescence from leukemia single-cells in human blood. The bioprobe is built on a tapered fiber tip apex by optical trapping of a yeast cell (1.4 μm radius) and a chain of Lactobacillus acidophilus cells (2 μm length and 200 nm radius), which act as a high-aspect-ratio nanospear. Light propagating along the bionanospear can be focused into a spot with a full width at half-maximum (fwhm) of 190 nm on the surface of single cells. Fluorescence signals are detected in real time at subwavelength spatial resolution. These noninvasive and biocompatible optical probes will find applications in imaging and manipulation of biospecimens.
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Affiliation(s)
- Yuchao Li
- Institute of Nanophotonics , Jinan University , Guangzhou 511443 , China
| | - Hongbao Xin
- Institute of Nanophotonics , Jinan University , Guangzhou 511443 , China
| | - Yao Zhang
- Institute of Nanophotonics , Jinan University , Guangzhou 511443 , China
| | - Hongxiang Lei
- School of Materials Science and Engineering , Sun Yat-Sen University , Guangzhou , 510275 , China
| | - Tianhang Zhang
- Graduate School for Integrative Sciences and Engineering , National University of Singapore, Centre for Life Sciences (CeLS) , #05-01, 28 Medical Drive Singapore 117456 , Singapore
- Department of Electrical and Computer Engineering , National University of Singapore , Singapore 117583 , Singapore
| | - Huapeng Ye
- Department of Electrical and Computer Engineering , National University of Singapore , Singapore 117583 , Singapore
| | - Juan Jose Saenz
- Donostia International Physics Center (DIPC) , Paseo Manuel de Lardizabal 4 , Donostia-San Sebastian 20018 , Spain
- IKERBASQUE, Basque Foundation for Science , 48013 Bilbao , Spain
| | - Cheng-Wei Qiu
- Graduate School for Integrative Sciences and Engineering , National University of Singapore, Centre for Life Sciences (CeLS) , #05-01, 28 Medical Drive Singapore 117456 , Singapore
- Department of Electrical and Computer Engineering , National University of Singapore , Singapore 117583 , Singapore
| | - Baojun Li
- Institute of Nanophotonics , Jinan University , Guangzhou 511443 , China
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11
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Dual-core all-fiber integrated immunosensor for detection of protein antigens. Biosens Bioelectron 2018; 114:22-29. [DOI: 10.1016/j.bios.2018.05.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 04/28/2018] [Accepted: 05/07/2018] [Indexed: 12/11/2022]
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12
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Fan N, Jiang H, Ye Z, Wu G, Kang Y, Wang Q, Ran X, Guo J, Zhang G, Wang G, Peng B. The Insertion Mechanism of a Living Cell Determined by the Stress Segmentation Effect of the Cell Membrane during the Tip-Cell Interaction. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1703868. [PMID: 29717805 DOI: 10.1002/smll.201703868] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 03/11/2018] [Indexed: 06/08/2023]
Abstract
Atomic force microscopy probes are proved to be powerful tools to measure and manipulate the individual cell, providing potential applications for the controlled drug/protein delivery. However, the measured insertion efficiency varies dramatically from 20 to 80%, in some cases, the nanotip can never penetrate the cell membrane no matter how much force is applied to it. Thus, the insertion mechanism of a living cell during the tip-cell interaction must be thoroughly investigated before this technology comes into practical applications. In this work, a multistructural cell model is established to study the tip-membrane interaction. The simulation results show that the stress of the cell membrane can be divided into two stages by the stress segmentation point S. After point S, the stress of the cell membrane increases slightly and most of the indentation force is allocated to the cytoskeleton. This phenomenon is called "stress segmentation effect of the cell membrane," which confirms the hypothesis based on the experimental studies. Moreover, according to the experimental and numerical studies, the hypothesis of the stress segmentation effect also explains the reason that modifying the cell membrane or using the manmade sharpened nanotip can increase the insertion efficiency.
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Affiliation(s)
- Na Fan
- School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731, P. R. China
| | - Hai Jiang
- School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731, P. R. China
| | - Zhiyi Ye
- Key Laboratory of Biorheological Science and Technology of Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, P. R. China
| | - Guiyong Wu
- School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731, P. R. China
| | - Yuejun Kang
- Institute for Clean Energy & Advanced Materials, Southwest University, Chongqing, 400715, P. R. China
| | - Qun Wang
- School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731, P. R. China
| | - Xiaolin Ran
- Key Laboratory of Biorheological Science and Technology of Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, P. R. China
| | - Jian Guo
- School of Mechanical Engineering, University of South China, Hengyang, Hunan, 421001, P. R. China
| | - Guocheng Zhang
- School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731, P. R. China
| | - Guixue Wang
- Key Laboratory of Biorheological Science and Technology of Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, P. R. China
| | - Bei Peng
- School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731, P. R. China
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13
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Quan HH, Li M, Huang Y, Hahn JH. A hydrophobic ionic liquid compartmentalized sampling/labeling and its separation techniques in polydimethylsiloxane microchip capillary electrophoresis. Electrophoresis 2016; 38:372-379. [PMID: 27739089 DOI: 10.1002/elps.201600305] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 09/07/2016] [Accepted: 09/08/2016] [Indexed: 01/18/2023]
Abstract
This paper demonstrates a novel compartmentalized sampling/labeling method and its separation techniques using a hydrophobic ionic liquid (IL)-1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)-imidate (BmimNTf2 )-as the immiscible phase, which is capable of minimizing signal losses during microchip capillary electrophoresis (MCE). The MCE device consists of a silica tube connected to a straight polydimethylsiloxane (PDMS) separation channel. Poly(diallyldimethylammonium chloride) (PDDAC) was coated on the inner surface of channel to ease the introduction of IL plugs and enhance the IL wetting on the PDMS surface for sample releasing. Electroosmotic flow (EOF)-based sample compartmentalization was carried out through a sequenced injection into sampling tubes with the following order: leading IL plug/sample segment/terminal IL plug. The movement of the sample segment was easily controlled by applying an electrical voltage across both ends of the chip without a sample volume change. This approach effectively prevented analyte diffusion before injection into MCE channels. When the sample segment was manipulated to the PDDAC-modified PDMS channel, the sample plug then was released from isolation under EOF while IL plugs adsorbed onto channel surfaces owing to strong adhesion. A mixture of flavin adenine nucleotides (FAD) and flavin mononucleotides (FMN) was successfully separated on a 2.5 cm long separation channel, for which the theoretical numbers of plates were 15 000 and 17 000, respectively. The obtained peak intensity was increased 6.3-fold over the corresponding value from conventional electrokinetic injection with the same sampling time. Furthermore, based on the compartmented sample segment serving as an interim reactor, an on-chip fluorescence labeling is demonstrated.
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Affiliation(s)
- Hong Hua Quan
- Jiangsu Key Laboratory of Environmental Material & Environmental Engineering, College of Environmental Science and Engineering, Yangzhou University, Yangzhou, P. R. China
| | - Ming Li
- Jiangsu Key Laboratory of Environmental Material & Environmental Engineering, College of Environmental Science and Engineering, Yangzhou University, Yangzhou, P. R. China
| | - Yan Huang
- Department of Chemistry, Pohang University of Science and Technology, Pohang, Korea
| | - Jong Hoon Hahn
- Department of Chemistry, Pohang University of Science and Technology, Pohang, Korea
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14
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Abstract
Analysis of individual cells at the subcellular level is important for understanding diseases and accelerating drug discovery. Nanoscale endoscopes allow minimally invasive probing of individual cell interiors. Several such instruments have been presented previously, but they are either too complex to fabricate or require sophisticated external detectors because of low signal collection efficiency. Here we present a nanoendoscope that can locally excite fluorescence in labelled cell organelles and collect the emitted signal for spectral analysis. Finite Difference Time Domain (FDTD) simulations have shown that with an optimized nanoendoscope taper profile, the light emission and collection was localized within ~100 nm. This allows signal detection to be used for nano-photonic sensing of the proximity of fluorophores. Upon insertion into the individual organelles of living cells, the nanoendoscope was fabricated and resultant fluorescent signals collected. This included the signal collection from the nucleus of Acridine orange labelled human fibroblast cells, the nucleus of Hoechst stained live liver cells and the mitochondria of MitoTracker Red labelled MDA-MB-231 cells. The endoscope was also inserted into a live organism, the yellow fluorescent protein producing nematode Caenorhabditis elegans, and a fluorescent signal was collected. To our knowledge this is the first demonstration of in vivo, local fluorescence signal collection on the sub-organelle level.
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15
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Long Z, Liu M, Wan Q, Mao L, Huang H, Zeng G, Wan Y, Deng F, Zhang X, Wei Y. Facile Fabrication of PEGylated Fluorescent Organic Nanoparticles with Aggregation-Induced Emission Feature via Formation of Dynamic Bonds and Their Biological Imaging Applications. Macromol Rapid Commun 2016; 37:1657-1661. [DOI: 10.1002/marc.201600253] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Revised: 06/02/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Zi Long
- College of Chemistry; Nanchang University; 999 Xuefu Avenue Nanchang 330031 China
| | - Meiying Liu
- College of Chemistry; Nanchang University; 999 Xuefu Avenue Nanchang 330031 China
| | - Qing Wan
- College of Chemistry; Nanchang University; 999 Xuefu Avenue Nanchang 330031 China
| | - Liucheng Mao
- College of Chemistry; Nanchang University; 999 Xuefu Avenue Nanchang 330031 China
| | - Hongye Huang
- College of Chemistry; Nanchang University; 999 Xuefu Avenue Nanchang 330031 China
| | - Guangjian Zeng
- College of Chemistry; Nanchang University; 999 Xuefu Avenue Nanchang 330031 China
| | - Yiqun Wan
- College of Chemistry; Nanchang University; 999 Xuefu Avenue Nanchang 330031 China
| | - Fengjie Deng
- College of Chemistry; Nanchang University; 999 Xuefu Avenue Nanchang 330031 China
| | - Xiaoyong Zhang
- College of Chemistry; Nanchang University; 999 Xuefu Avenue Nanchang 330031 China
| | - Yen Wei
- Department of Chemistry and the Tsinghua, Center for Frontier Polymer Research; Tsinghua University; Beijing 100084 China
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16
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Liang F, Zhang Y, Hong W, Dong Y, Xie Z, Quan Q. Direct Tracking of Amyloid and Tu Dynamics in Neuroblastoma Cells Using Nanoplasmonic Fiber Tip Probes. NANO LETTERS 2016; 16:3989-94. [PMID: 27266855 PMCID: PMC5145310 DOI: 10.1021/acs.nanolett.6b00320] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Amyloid plaques and neurofibrillary tangles are the pathological hallmarks of Alzheimer's disease. However, there has been a long-standing discussion on the dynamic relations between Aβ and tau proteins, partially due to the lack of a tool to track protein dynamics in individual live neurons at the early stage of Aβ generation and tau phosphorylation. Here, we developed nanoplasmonic fiber tip probe (nFTP) technology to simultaneously monitor Aβ42 generation and tau phosphorylation (at serine 262) in living, single neuroblastoma cells over 12 h. We observed that Aβ42 generation, under clinically relevant anesthetic treatment, preceded tau phosphorylation, which then facilitated Aβ42 generation. This observation is also supported by measuring proteins in cell lysates using the ultrasensitive label-free photonic crystal nanosensors. nFTP therefore provides an advanced method to investigate protein expression and post-translational modification in live cells and determine outcomes of intervention of Alzheimer's disease and other neurodegenerative disorders.
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Affiliation(s)
- Feng Liang
- Rowland Institute at Harvard University, Cambridge, Massachusetts 02142, United States
| | - Yiying Zhang
- Geriatric Anesthesia Research Unit, Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital and Harvard Medical School, Charlestown, Massachusetts 02129, United States
| | - Wooyoung Hong
- Rowland Institute at Harvard University, Cambridge, Massachusetts 02142, United States
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Yuanlin Dong
- Geriatric Anesthesia Research Unit, Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital and Harvard Medical School, Charlestown, Massachusetts 02129, United States
| | - Zhongcong Xie
- Geriatric Anesthesia Research Unit, Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital and Harvard Medical School, Charlestown, Massachusetts 02129, United States
- Corresponding Authors (Q.Q). (Z.X)
| | - Qimin Quan
- Rowland Institute at Harvard University, Cambridge, Massachusetts 02142, United States
- Corresponding Authors (Q.Q). (Z.X)
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17
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Micro- and Nanoscale Technologies for Delivery into Adherent Cells. Trends Biotechnol 2016; 34:665-678. [PMID: 27287927 DOI: 10.1016/j.tibtech.2016.05.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Revised: 05/09/2016] [Accepted: 05/10/2016] [Indexed: 12/28/2022]
Abstract
Several recent micro- and nanotechnologies have provided novel methods for biological studies of adherent cells because the small features of these new biotools provide unique capabilities for accessing cells without the need for suspension or lysis. These novel approaches have enabled gentle but effective delivery of molecules into specific adhered target cells, with unprecedented spatial resolution. We review here recent progress in the development of these technologies with an emphasis on in vitro delivery into adherent cells utilizing mechanical penetration or electroporation. We discuss the major advantages and limitations of these approaches and propose possible strategies for improvements. Finally, we discuss the impact of these technologies on biological research concerning cell-specific temporal studies, for example non-destructive sampling and analysis of intracellular molecules.
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18
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Li T, Choi YH, Shin YB, Kim HJ, Kim MG. A fluorescence enhancement-based label-free homogeneous immunoassay of benzo[a]pyrene (BaP) in aqueous solutions. CHEMOSPHERE 2016; 150:407-413. [PMID: 26796590 DOI: 10.1016/j.chemosphere.2016.01.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Revised: 12/15/2015] [Accepted: 01/04/2016] [Indexed: 06/05/2023]
Abstract
A fluorescence enhancement-based immunoassay has been developed for the detection of the polycyclic aromatic hydrocarbons (PAH), benzo[a]pyrene (BaP), in aqueous solutions. The results of this study show that BaP, which inefficiently fluoresces in aqueous solution, displays enhanced fluorescence when bound to the anti-BaP antibody (anti-BaP), as part of a label-free immunoassay system. Binding to anti-BaP results in a 3.12-fold increase in the fluorescence intensity of BaP, which emits at 435 nm when excited at 280 nm, due to the hydrophobic interaction and fluorescence resonance energy transfer (FRET) between antibody and antigen. As result of this phenomenon, the antibody-based fluorescence immunoassay system can be used to detect BaP specifically with a limit of detection (LOD) of 0.06 ng mL(-1). Finally, extraction recoveries of BaP from spiked wheat and barley samples were found to be in the range of 80.5-87.0% and 92.9-92.1%, respectively.
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Affiliation(s)
- Taihua Li
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210-037, China
| | - Yo Han Choi
- Department of Chemistry, School of Physics and Chemistry, Gwangju Institute of Science & Technology (GIST), 261 Cheomdan-gwagiro, Gwangju 500-712, South Korea; Department of Microbiology, College of Medicine, Chungnam National University, Daejeon 301-747, South Korea
| | - Yong-Beom Shin
- Biomedical Translational Research Center, Korea Research Institute of Bioscience & Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon 305-806, South Korea
| | - Hwa-Jung Kim
- Department of Microbiology, College of Medicine, Chungnam National University, Daejeon 301-747, South Korea
| | - Min-Gon Kim
- Department of Chemistry, School of Physics and Chemistry, Gwangju Institute of Science & Technology (GIST), 261 Cheomdan-gwagiro, Gwangju 500-712, South Korea; Advanced Photonics Research Institute, Gwangju Institute of Science & Technology (GIST), 261 Cheomdan-gwagiro, Gwangju 500-712, South Korea.
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19
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Optical Microfibre Based Photonic Components and Their Applications in Label-Free Biosensing. BIOSENSORS-BASEL 2015; 5:471-99. [PMID: 26287252 PMCID: PMC4600168 DOI: 10.3390/bios5030471] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Revised: 07/07/2015] [Accepted: 07/07/2015] [Indexed: 11/17/2022]
Abstract
Optical microfibre photonic components offer a variety of enabling properties, including large evanescent fields, flexibility, configurability, high confinement, robustness and compactness. These unique features have been exploited in a range of applications such as telecommunication, sensing, optical manipulation and high Q resonators. Optical microfibre biosensors, as a class of fibre optic biosensors which rely on small geometries to expose the evanescent field to interact with samples, have been widely investigated. Due to their unique properties, such as fast response, functionalization, strong confinement, configurability, flexibility, compact size, low cost, robustness, ease of miniaturization, large evanescent field and label-free operation, optical microfibres based biosensors seem a promising alternative to traditional immunological methods for biomolecule measurements. Unlabeled DNA and protein targets can be detected by monitoring the changes of various optical transduction mechanisms, such as refractive index, absorption and surface plasmon resonance, since a target molecule is capable of binding to an immobilized optical microfibre. In this review, we critically summarize accomplishments of past optical microfibre label-free biosensors, identify areas for future research and provide a detailed account of the studies conducted to date for biomolecules detection using optical microfibres.
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20
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Optical fiber nanotips coated with molecular beacons for DNA detection. SENSORS 2015; 15:9666-80. [PMID: 25919369 PMCID: PMC4481987 DOI: 10.3390/s150509666] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Revised: 04/02/2015] [Accepted: 04/20/2015] [Indexed: 12/20/2022]
Abstract
Optical fiber sensors, thanks to their compactness, fast response and real-time measurements, have a large impact in the fields of life science research, drug discovery and medical diagnostics. In recent years, advances in nanotechnology have resulted in the development of nanotools, capable of entering the single cell, resulting in new nanobiosensors useful for the detection of biomolecules inside living cells. In this paper, we provide an application of a nanotip coupled with molecular beacons (MBs) for the detection of DNA. The MBs were characterized by hybridization studies with a complementary target to prove their functionality both free in solution and immobilized onto a solid support. The solid support chosen as substrate for the immobilization of the MBs was a 30 nm tapered tip of an optical fiber, fabricated by chemical etching. With this set-up promising results were obtained and a limit of detection (LOD) of 0.57 nM was reached, opening up the possibility of using the proposed nanotip to detect mRNAs inside the cytoplasm of living cells.
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21
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Jia Y, Zuo X, Lou X, Miao M, Cheng Y, Min X, Li X, Xia F. Rational Designed Bipolar, Conjugated Polymer-DNA Composite Beacon for the Sensitive Detection of Proteins and Ions. Anal Chem 2015; 87:3890-4. [DOI: 10.1021/ac504690y] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Yongmei Jia
- Key
Laboratory for Large-Format Battery Materials and System, Ministry
of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, P. R. China
| | - Xiaolei Zuo
- Division
of Physical Biology and Bioimaging Center, Shanghai Synchrotron Radiation
Facility, Shanghai Institute of Applied Physics, Chinese Academy of Science, Shanghai 201800, P. R. China
| | - Xiaoding Lou
- Key
Laboratory for Large-Format Battery Materials and System, Ministry
of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, P. R. China
| | - Mao Miao
- Key
Laboratory for Large-Format Battery Materials and System, Ministry
of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, P. R. China
| | - Yong Cheng
- Key
Laboratory for Large-Format Battery Materials and System, Ministry
of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, P. R. China
| | - Xuehong Min
- Key
Laboratory for Large-Format Battery Materials and System, Ministry
of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, P. R. China
| | - Xinchun Li
- Key
Laboratory for Large-Format Battery Materials and System, Ministry
of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, P. R. China
| | - Fan Xia
- Key
Laboratory for Large-Format Battery Materials and System, Ministry
of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, P. R. China
- National
Engineering Research Center for Nanomedicine, Huazhong University of Science and Technology (HUST), Wuhan 430074, P. R. China
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22
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Quan Q, Zhang Y. Lab-on-a-Tip (LOT): Where Nanotechnology Can Revolutionize Fibre Optics. Nanobiomedicine (Rij) 2015; 2:3. [PMID: 29942369 PMCID: PMC5997371 DOI: 10.5772/60518] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 03/02/2015] [Indexed: 12/22/2022] Open
Abstract
Recently developed lab-on-a-chip technologies integrate multiple traditional assays on a single chip with higher sensitivity, faster assay time, and more streamlined sample operation. We discuss the prospects of the lab-on-a-tip platform, where assays can be integrated on a miniaturized tip for in situ and in vivo analysis. It will resolve some of the limitations of available lab-on-a-chip platforms and enable next generation multifunctional in vivo sensors, as well as analytical techniques at the single cell or even sub-cellular levels.
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Affiliation(s)
- Qimin Quan
- Rowland Institute at Harvard University, Cambridge, MA, USA
| | - Yiying Zhang
- Geriatric Anesthesia Research Unit, Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, USA
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23
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Cui Y, Irudayaraj J. Inside single cells: quantitative analysis with advanced optics and nanomaterials. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2014; 7:387-407. [PMID: 25430077 DOI: 10.1002/wnan.1321] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Revised: 10/17/2014] [Accepted: 10/29/2014] [Indexed: 01/08/2023]
Abstract
Single-cell explorations offer a unique window to inspect molecules and events relevant to mechanisms and heterogeneity constituting the central dogma of biology. A large number of nucleic acids, proteins, metabolites, and small molecules are involved in determining and fine-tuning the state and function of a single cell at a given time point. Advanced optical platforms and nanotools provide tremendous opportunities to probe intracellular components with single-molecule accuracy, as well as promising tools to adjust single-cell activity. To obtain quantitative information (e.g., molecular quantity, kinetics, and stoichiometry) within an intact cell, achieving the observation with comparable spatiotemporal resolution is a challenge. For single-cell studies, both the method of detection and the biocompatibility are critical factors as they determine the feasibility, especially when considering live-cell analysis. Although a considerable proportion of single-cell methodologies depend on specialized expertise and expensive instruments, it is our expectation that the information content and implication will outweigh the costs given the impact on life science enabled by single-cell analysis.
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Affiliation(s)
- Yi Cui
- Department of Agricultural and Biological Engineering, Bindley Bioscience Center and Birck Nanotechnology Center, Purdue University, West Lafayette, IN, USA
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24
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Vo-Dinh T, Liu Y, Fales AM, Ngo H, Wang HN, Register JK, Yuan H, Norton SJ, Griffin GD. SERS nanosensors and nanoreporters: golden opportunities in biomedical applications. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2014; 7:17-33. [PMID: 25316579 DOI: 10.1002/wnan.1283] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Revised: 06/26/2014] [Accepted: 07/12/2014] [Indexed: 01/30/2023]
Abstract
This article provides an overview of recent developments and applications of surface-enhanced Raman scattering (SERS) nanosensors and nanoreporters in our laboratory for use in biochemical monitoring, medical diagnostics, and therapy. The design and fabrication of different types of plasmonics-active nanostructures are discussed. The SERS nanosensors can be used in various applications including pH sensing, protein detection, and gene diagnostics. For DNA detection the 'Molecular Sentinel' nanoprobe can be used as a homogenous bioassay in solution or on a chip platform. Gold nanostars provide an excellent multi-modality theranostic platform, combining Raman and SERS with two-photon luminescence (TPL) imaging as well as photodynamic therapy (PDT), and photothermal therapy (PTT). Plasmonics-enhanced and optically modulated delivery of nanostars into brain tumor in live animals was demonstrated; photothermal treatment of tumor vasculature may induce inflammasome activation, thus increasing the permeability of the blood brain-tumor barrier. The imaging method using TPL of gold nanostars provides an unprecedented spatial selectivity for enhanced targeted nanostar delivery to cortical tumor tissue. A quintuple-modality nanoreporter based on gold nanostars for SERS, TPL, magnetic resonance imaging (MRI), computed tomography (CT), and PTT has recently been developed. The possibility of combining spectral selectivity and high sensitivity of the SERS process with the inherent molecular specificity of bioreceptor-based nanoprobes provides a unique multiplex and selective diagnostic modality. Several examples of optical detection using SERS in combination with other detection and treatment modalities are discussed to illustrate the usefulness and potential of SERS nanosensors and nanoreporters for medical applications.
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Affiliation(s)
- Tuan Vo-Dinh
- Fitzpatrick Institute for Photonics, Department of Biomedical Engineering, Department of Chemistry, Duke University, Durham, NC, 27708, USA
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25
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Hong W, Liang F, Schaak D, Loncar M, Quan Q. Nanoscale label-free bioprobes to detect intracellular proteins in single living cells. Sci Rep 2014; 4:6179. [PMID: 25154394 PMCID: PMC4143788 DOI: 10.1038/srep06179] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Accepted: 07/09/2014] [Indexed: 01/26/2023] Open
Abstract
Fluorescent labeling techniques have been widely used in live cell studies; however, the labeling processes can be laborious and challenging for use in non-transfectable cells, and labels can interfere with protein functions. While label-free biosensors have been realized by nanofabrication, a method to track intracellular protein dynamics in real-time, in situ and in living cells has not been found. Here we present the first demonstration of label-free detection of intracellular p53 protein dynamics through a nanoscale surface plasmon-polariton fiber-tip-probe (FTP).
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Affiliation(s)
- Wooyoung Hong
- 1] Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA [2] Rowland Institute at Harvard University, Cambridge, MA 02142, USA
| | - Feng Liang
- Rowland Institute at Harvard University, Cambridge, MA 02142, USA
| | - Diane Schaak
- Rowland Institute at Harvard University, Cambridge, MA 02142, USA
| | - Marko Loncar
- School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
| | - Qimin Quan
- Rowland Institute at Harvard University, Cambridge, MA 02142, USA
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26
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Lu G, De Keersmaecker H, Su L, Kenens B, Rocha S, Fron E, Chen C, Van Dorpe P, Mizuno H, Hofkens J, Hutchison JA, Uji-i H. Live-cell SERS endoscopy using plasmonic nanowire waveguides. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:5124-8. [PMID: 24866811 DOI: 10.1002/adma.201401237] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Revised: 04/30/2014] [Indexed: 05/22/2023]
Abstract
Live-cell surface-enhanced Raman spectroscopy (SERS) endoscopy is developed by using plasmonic nanowire waveguides as endoscopic probes. It is demonstrated that the probe insertion does not stress the cell. Opposed to conventional SERS endoscopy, with excitation at the hotspot within the cell, the remote excitation method yields low-background SERS spectra from specific cell compartments with minimal associated photodamage.
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Affiliation(s)
- Gang Lu
- KU Leuven, Departement Chemie, Celestijnenlaan 200G-F, B-3001, Heverlee, Belgium
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27
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Ladanov M, Cheemalapati S, Pyayt A. Optimization of light delivery by a nanowire-based single cell optical endoscope. OPTICS EXPRESS 2013; 21:28001-28009. [PMID: 24514313 DOI: 10.1364/oe.21.028001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Here we present a new design and FDTD simulations of light delivery by a nanowire-based intracellular endoscope. Nanowires can be used for minimally invasive and very local light delivery inside cells. One of the main challenges is coupling of light into the nanowire. We propose a new plasmonic coupler interface between cleaved optical fiber and a nanowire, and optimize light coupling efficiency and contrast.
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28
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Vo-Dinh T, Fales AM, Griffin GD, Khoury CG, Liu Y, Ngo H, Norton SJ, Register JK, Wang HN, Yuan H. Plasmonic nanoprobes: from chemical sensing to medical diagnostics and therapy. NANOSCALE 2013; 5:10127-40. [PMID: 24056945 PMCID: PMC4355622 DOI: 10.1039/c3nr03633b] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
This article provides an overview of the development and applications of plasmonics-active nanoprobes in our laboratory for chemical sensing, medical diagnostics and therapy. Molecular Sentinel nanoprobes provide a unique tool for DNA/RNA biomarker detection both in a homogeneous solution or on a chip platform for medical diagnostics. The possibility of combining spectral selectivity and high sensitivity of the surface-enhanced Raman scattering (SERS) process with the inherent molecular specificity of nanoprobes provides an important multiplex diagnostic modality. Gold nanostars can provide an excellent multi-modality platform, combining two-photon luminescence with photothermal therapy as well as Raman imaging with photodynamic therapy. Several examples of optical detection using SERS and photonics-based treatments are presented to illustrate the usefulness and potential of the plasmonic nanoprobes for theranostics, which seamlessly combines diagnostics and therapy.
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Affiliation(s)
- Tuan Vo-Dinh
- Department of Biomedical Engineering, Department of Chemistry, The Fitzpatrick Institute for Photonics, Duke University, Durham, NC 27708, USA.
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29
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Synergizing nucleic acid aptamers with 1-dimensional nanostructures as label-free field-effect transistor biosensors. Biosens Bioelectron 2013; 50:278-93. [PMID: 23872609 DOI: 10.1016/j.bios.2013.06.033] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Revised: 06/06/2013] [Accepted: 06/17/2013] [Indexed: 01/04/2023]
Abstract
Since the introduction by Gold et al. in 1990, nucleic acid aptamers had evolved to become a true contender in biosensors for protein and cell detections. Aptamers are short strands of synthetically designed DNA or RNA oligonucleotides that can be self-assembled into unique 3-dimensional structures and can bind to different proteins, cells or even small molecules at a high level of specificity and affinity. In recent years, there had been many reports in literature in using aptamers in place of conventional antibodies as capture biomolecules on the surface. This is mainly due to the better thermal stability properties and ease in production. Consequently, also these characteristics allowed the aptamers to find use in field effect transistors (FETs) based upon 1D nanostructured (1D-NS) as label-free biosensing. In terms of designing label-free platforms for biosensors applications, 1D-NS FET had been an attractive option due to reported high sensitivities toward protein targets arising from the large surface area for detection as well as to their label-free nature. Since the first aptamer-based 1D-NS FET biosensor had surfaced in 2005, there had been many more improvements in the overall design and sensitivity in recent years. In this review, the latest developments in synergizing these two interesting areas of research (aptamers and 1D-NS FET) will be discussed for a range of different nanowire types as well as for the detection results.
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Yuan H, Register JK, Wang HN, Fales AM, Liu Y, Vo-Dinh T. Plasmonic nanoprobes for intracellular sensing and imaging. Anal Bioanal Chem 2013; 405:6165-80. [DOI: 10.1007/s00216-013-6975-1] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2013] [Revised: 04/03/2013] [Accepted: 04/04/2013] [Indexed: 01/08/2023]
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Vo-Dinh T, Scaffidi J, Gregas M, Zhang Y, Seewaldt V. Applications of fiber-optics-based nanosensors to drug discovery. Expert Opin Drug Discov 2013; 4:889-900. [PMID: 23496274 DOI: 10.1517/17460440903085112] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Fiber-optic nanosensors are fabricated by heating and pulling optical fibers to yield sub-micron diameter tips and have been used for in vitro analysis of individual living mammalian cells. Immobilization of bioreceptors (e.g., antibodies, peptides, DNA) selective to targeting analyte molecules of interest provides molecular specificity. Excitation light can be launched into the fiber, and the resulting evanescent field at the tip of the nanofiber can be used to excite target molecules bound to the bioreceptor molecules. The fluorescence or surface-enhanced Raman scattering produced by the analyte molecules is detected using an ultra-sensitive photodetector. OBJECTIVE This article provides an overview of the development and application of fiber-optic nanosensors for drug discovery. CONCLUSIONS The nanosensors provide minimally invasive tools to probe subcellular compartments inside single living cells for health effect studies (e.g., detection of benzopyrene adducts) and medical applications (e.g., monitoring of apoptosis in cells treated with anticancer drugs).
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Affiliation(s)
- Tuan Vo-Dinh
- Duke University, Fitzpatrick Institute for Photonics, 305 Teer Building, Box 90271, Durham, NC 27708, USA +1 919 660 8520 ; +1 919 613 9145 ;
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Wang Q, de Dood MJA. An absorption-based superconducting nano-detector as a near-field optical probe. OPTICS EXPRESS 2013; 21:3682-3692. [PMID: 23481824 DOI: 10.1364/oe.21.003682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We investigate the use of a superconducting nano-detector as a novel near-field probe. In contrast to conventional scanning near-field optical microscopes, the nano-detector absorbs and detects photons in the near-field. We show that this absorption-based probe has a higher collection efficiency and investigate the details of the interaction between the nano detector and the dipole emitter. To this end, we introduce a multipole model to describe the interaction. Calculations of the local density of states show that the nano-detector does not strongly modify the emission rate of a dipole, especially when compared to traditional metal probes.
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Affiliation(s)
- Qiang Wang
- Institute of Physics, Leiden University, Niels Bohrweg 2, Leiden, 2333CA, The Netherlands.
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Yan R, Park JH, Choi Y, Heo CJ, Yang SM, Lee LP, Yang P. Nanowire-based single-cell endoscopy. NATURE NANOTECHNOLOGY 2011; 7:191-6. [PMID: 22179570 DOI: 10.1038/nnano.2011.226] [Citation(s) in RCA: 188] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2011] [Accepted: 11/18/2011] [Indexed: 05/20/2023]
Abstract
One-dimensional smart probes based on nanowires and nanotubes that can safely penetrate the plasma membrane and enter biological cells are potentially useful in high-resolution and high-throughput gene and drug delivery, biosensing and single-cell electrophysiology. However, using such probes for optical communication across the cellular membrane at the subwavelength level remains limited. Here, we show that a nanowire waveguide attached to the tapered tip of an optical fibre can guide visible light into intracellular compartments of a living mammalian cell, and can also detect optical signals from subcellular regions with high spatial resolution. Furthermore, we show that through light-activated mechanisms the endoscope can deliver payloads into cells with spatial and temporal specificity. Moreover, insertion of the endoscope into cells and illumination of the guided laser did not induce any significant toxicity in the cells.
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Affiliation(s)
- Ruoxue Yan
- Department of Chemistry, University of California, and Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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Zhang Y, Dhawan A, Vo-Dinh T. Design and Fabrication of Fiber-Optic Nanoprobes for Optical Sensing. NANOSCALE RESEARCH LETTERS 2011; 6:18. [PMID: 27502642 PMCID: PMC3211233 DOI: 10.1007/s11671-010-9744-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2010] [Accepted: 08/05/2010] [Indexed: 05/13/2023]
Abstract
This paper describes the design and fabrication of fiber-optic nanoprobes developed for optical detection in single living cells. It is critical to fabricate probes with well-controlled nanoapertures for optimized spatial resolution and optical transmission. The detection sensitivity of fiber-optic nanoprobe depends mainly on the extremely small excitation volume that is determined by the aperture sizes and penetration depths. We investigate the angle dependence of the aperture in shadow evaporation of the metal coating onto the tip wall. It was found that nanoaperture diameters of approximately 50 nm can be achieved using a 25° tilt angle. On the other hand, the aperture size is sensitive to the subtle change of the metal evaporation angle and could be blocked by irregular metal grains. Through focused ion beam (FIB) milling, optical nanoprobes with well-defined aperture size as small as 200 nm can be obtained. Finally, we illustrate the use of the nanoprobes by detecting a fluorescent species, benzo[a]pyrene tetrol (BPT), in single living cells. A quantitative estimation of the numbers of BPT molecules detected using fiber-optic nanoprobes for BPT solutions shows that the limit of detection was approximately 100 molecules.
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Affiliation(s)
- Yan Zhang
- Fitzpatrick Institute for Photonics, Duke University, Durham, NC, 27708, USA
- Department of Biomedical Engineering, Duke University, Durham, NC, 27708, USA
| | - Anuj Dhawan
- Fitzpatrick Institute for Photonics, Duke University, Durham, NC, 27708, USA
- Department of Biomedical Engineering, Duke University, Durham, NC, 27708, USA
| | - Tuan Vo-Dinh
- Fitzpatrick Institute for Photonics, Duke University, Durham, NC, 27708, USA.
- Department of Biomedical Engineering, Duke University, Durham, NC, 27708, USA.
- Department of Chemistry, Duke University, Durham, NC, 27708, USA.
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Veselov AA, Abraham BG, Lemmetyinen H, Karp MT, Tkachenko NV. Photochemical properties and sensor applications of modified yellow fluorescent protein (YFP) covalently attached to the surfaces of etched optical fibers (EOFs). Anal Bioanal Chem 2011; 402:1149-58. [PMID: 22116380 DOI: 10.1007/s00216-011-5564-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2011] [Accepted: 11/07/2011] [Indexed: 01/14/2023]
Abstract
Fluorescent proteins have the inherent ability to act as sensing components which function both in vitro and inside living cells. We describe here a novel study on a covalent site-specific bonding of fluorescent proteins to form self-assembled monolayers (SAMs) on the surface of etched optical fibers (EOFs). Deposition of fluorescent proteins on EOFs gives the opportunity to increase the interaction of guided light with deposited molecules relative to plane glass surfaces. The EOF modification is carried out by surface activation using 3-aminopropylthrimethoxysilane (APTMS) and bifunctional crosslinker sulfosuccinimidyl 4-[N-maleimidomethyl]cyclohexane-1-carboxylate (sulfo-SMCC) which exposes sulfhydryl-reactive maleimide groups followed by covalent site-specific coupling of modified yellow fluorescent protein (YFP). Steady-state and fluorescence lifetime measurements confirm the formation of SAM. The sensor applications of YPF SAMs on EOF are demonstrated by the gradual increase of emission intensity upon addition of Ca(2+) ions in the concentration range from a few tens of micromolars up to a few tens of millimolars. The studies on the effect of pH, divalent cations, denaturing agents, and proteases reveal the stability of YFP on EOFs at normal physiological conditions. However, treatments with 0.5% SDS at pH 8.5 and protease trypsin are found to denaturate or cleave the YFP from fiber surfaces.
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Affiliation(s)
- Alexey A Veselov
- Department of Chemistry and Bioengineering, Tampere University of Technology, P.O. Box 541, 33101 Tampere, Finland.
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Lee SH, Sung JH, Park TH. Nanomaterial-Based Biosensor as an Emerging Tool for Biomedical Applications. Ann Biomed Eng 2011; 40:1384-97. [DOI: 10.1007/s10439-011-0457-4] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2011] [Accepted: 10/21/2011] [Indexed: 12/15/2022]
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Vo‐Dinh T, Zhang Y. Single‐cell monitoring using fiberoptic nanosensors. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2010; 3:79-85. [DOI: 10.1002/wnan.112] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Tuan Vo‐Dinh
- Fitzpatrick Institute for Photonics, Departments of Biomedical Engineering and Chemistry, Duke University, Durham, NC, USA
| | - Yan Zhang
- Fitzpatrick Institute for Photonics, Departments of Biomedical Engineering and Chemistry, Duke University, Durham, NC, USA
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Single living cell detection of telomerase over-expression for cancer detection by an optical fiber nanobiosensor. Biosens Bioelectron 2010; 25:1548-52. [DOI: 10.1016/j.bios.2009.11.008] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2009] [Accepted: 11/08/2009] [Indexed: 11/20/2022]
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Scaffidi JP, Gregas MK, Seewaldt V, Vo-Dinh T. SERS-based plasmonic nanobiosensing in single living cells. Anal Bioanal Chem 2009; 393:1135-41. [PMID: 19066865 PMCID: PMC4022298 DOI: 10.1007/s00216-008-2521-y] [Citation(s) in RCA: 116] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2008] [Revised: 11/04/2008] [Accepted: 11/10/2008] [Indexed: 11/25/2022]
Abstract
In this paper, we describe the development and application of a pH-sensitive plasmonics-active fiber-optic nanoprobe suitable for intracellular bioanalysis in single living human cells using surface-enhanced Raman scattering (SERS) detection. The effectiveness and usefulness of SERS-based fiber-optic nanoprobes are illustrated by measurements of intracellular pH in HMEC-15/hTERT immortalized "normal" human mammary epithelial cells and PC-3 human prostate cancer cells. The results indicate that fiber-optic nanoprobe insertion and interrogation provide a sensitive and selective means to monitor cellular microenvironments at the single cell level.
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Affiliation(s)
- Jonathan P. Scaffidi
- Department of Biomedical Engineering, Duke University, 136 Hudson Hall, P. O. Box 90281, Durham, NC 27708, USA, Fitzpatrick Institute for Photonics, Duke University, 305 Teer Building, P. O. Box 90271, Durham, NC 27708, USA
| | - Molly K. Gregas
- Department of Biomedical Engineering, Duke University, 136 Hudson Hall, P. O. Box 90281, Durham, NC 27708, USA, Fitzpatrick Institute for Photonics, Duke University, 305 Teer Building, P. O. Box 90271, Durham, NC 27708, USA
| | - Victoria Seewaldt
- Fitzpatrick Institute for Photonics, Duke University, 305 Teer Building, P. O. Box 90271, Durham, NC 27708, USA, Division of Medical Oncology, Duke School of Medicine, DUMC 2628 Room 221A MSRB, Durham, NC 27710, USA
| | - Tuan Vo-Dinh
- Department of Biomedical Engineering, Duke University, 136 Hudson Hall, P. O. Box 90281, Durham, NC 27708, USA, Fitzpatrick Institute for Photonics, Duke University, 305 Teer Building, P. O. Box 90271, Durham, NC 27708, USA, Department of Chemistry, Duke University, 124 Science Drive, P. O. Box 90354, Durham, NC 27708, USA
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Vo-Dinh T. Nanosensing at the single cell level. SPECTROCHIMICA ACTA. PART B, ATOMIC SPECTROSCOPY 2008; 63:95-103. [PMID: 24839348 PMCID: PMC4022309 DOI: 10.1016/j.sab.2007.11.027] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
This article presents an overview of the development, operation, and applications of optical nanobiosensors for use in in vivo detection of biotargets in individual living cells. The nanobiosensors are equipped with immobilized bioreceptor probes (e.g., antibodies, enzyme substrate) selective to specific molecular targets. Laser excitation is transmitted into the fiber producing an evanescent field at the tip of the fiber in order to excite target molecules bound to the bioreceptors immobilized at the fiber tips. A photometric system detects the optical signal (e.g., fluorescence) originated from the analyte molecules or from the analyte-bioreceptor reaction. Examples of detection of biospecies and molecular signaling pathways of apoptosis in a living cell are discussed to illustrate the potential of the nanobiosensor technology for single cell analysis.
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Affiliation(s)
- Tuan Vo-Dinh
- Fitzpatrick Institute for Photonics, Department of Biomedical Engineering and Department of Chemistry, Duke University, Durham, NC 27708, USA
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Chopra N, Gavalas VG, Bachas LG, Hinds BJ, Bachas LG. Functional One‐Dimensional Nanomaterials: Applications in Nanoscale Biosensors. ANAL LETT 2007. [DOI: 10.1080/00032710701567170] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Affiliation(s)
- Qiang Zhao
- Department of Public Health Sciences, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, T6G 2G3, Canada
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Li H, Sun J, Cullum BM. Label-free detection of proteins using SERS-based immuno-nanosensors. ACTA ACUST UNITED AC 2006. [DOI: 10.1007/s12030-006-0003-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Vo-Dinh T, Kasili P, Wabuyele M. Nanoprobes and nanobiosensors for monitoring and imaging individual living cells. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2006; 2:22-30. [DOI: 10.1016/j.nano.2005.10.012] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2005] [Accepted: 10/10/2005] [Indexed: 11/29/2022]
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Fiber optic based gas sensor with nanoporous structure for the selective detection of NO2 in air samples. Anal Chim Acta 2006. [DOI: 10.1016/j.aca.2005.10.051] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Han S, Nakamura C, Obataya I, Nakamura N, Miyake J. Gene expression using an ultrathin needle enabling accurate displacement and low invasiveness. Biochem Biophys Res Commun 2005; 332:633-9. [PMID: 15925564 DOI: 10.1016/j.bbrc.2005.04.059] [Citation(s) in RCA: 108] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2005] [Accepted: 04/04/2005] [Indexed: 11/20/2022]
Abstract
We have previously demonstrated a new cell manipulation technology by using an atomic force microscope (AFM) and ultrathin needles, named nanoneedles. The nanoneedle is an AFM tip etched by a focused ion beam (FIB) and is sharpened from 200 to 800 nm in diameter. In this study, we have evaluated the proper diameter of a needle required for insertion into human cells over a long period without causing cell death, and achieved highly efficient gene expression method for human cells using a nanoneedle and an AFM.
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Affiliation(s)
- SungWoong Han
- Research Institute for Cell Engineering, National Institute of Advanced Industrial Science and Technology, 3-11-46 Nakoji, Amagasaki, Hyogo 661-0974, Japan
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Vo-Dinh T, Kasili P. Fiber-optic nanosensors for single-cell monitoring. Anal Bioanal Chem 2005; 382:918-25. [PMID: 15928944 DOI: 10.1007/s00216-005-3256-7] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2004] [Revised: 03/30/2005] [Accepted: 04/11/2005] [Indexed: 10/25/2022]
Abstract
This article is an overview of the fabrication, operating principles, and applications of fiber-optic nanobiosensors with the capability of in-vivo analysis at the single-cell level. Recently, the cross-disciplinary integration of nanotechnology, biology, and photonics has been revolutionizing important areas in molecular biology, especially diagnostics and therapy at the molecular and cellular level. Fiber-optic nanobiosensors are a unique class of biosensor that enable analytical measurements in individual living cells and the probing of individual chemical species in specific locations within a cell. This article provides a review of the research performed in our laboratory and discusses the usefulness and potential of this nanotechnology-based biosensor system in biological research and its applications to biomonitoring of individual cells.
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Affiliation(s)
- Tuan Vo-Dinh
- Oak Ridge National Laboratory, Advanced Biomedical Science and Technology Group, Oak Ridge, TN 37831-6101, USA.
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