1
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Zhong Z, Ding L, Man Z, Zeng Y, Pan B, Zhu JJ, Zhang M, Cheng F. Versatile Metal-Organic Framework Incorporating Ag 2S for Constructing a Photoelectrochemical Immunosensor for Two Breast Cancer Markers. Anal Chem 2024; 96:8837-8843. [PMID: 38757510 DOI: 10.1021/acs.analchem.4c02091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2024]
Abstract
Breast cancer poses the significance of early diagnosis and treatment. Here, we developed an innovative photoelectrochemical (PEC) immunosensor characterized by high-level dual photocurrent signals and exceptional sensitivity. The PEC sensor, denoted as MIL&Ag2S, was constructed by incorporating Ag2S into a metal-organic framework of MIL-101(Cr). This composite not only enhanced electron-hole separation and conductivity but also yielded robust and stable dual photocurrent signals. Through the implementation of signal switching, we achieved the combined detection of cancer antigen 15-3 (CA15-3) and carcinoembryonic antigen (CEA) with outstanding stability, reproducibility, and specificity. The results revealed a linear range for CEA detection spanning 0.01-32 ng/mL, with a remarkably low detection limit of 0.0023 ng/mL. Similarly, for CA15-3 detection, the linear range extended from 0.1 to 320 U/mL, with a low detection limit of 0.014 U/mL. The proposed strategy introduces new avenues for the development of highly efficient, cost-effective, and user-friendly PEC sensors. Furthermore, it holds promising prospects for early clinical diagnosis, contributing to potential breakthroughs in medical detection and ultimately improving patient outcomes.
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Affiliation(s)
- Zhaoxiang Zhong
- Guangdong Engineering and Technology Research Center for Advanced Nanomaterials, Dongguan University of Technology, Dongguan 523808, P. R. China
| | - Lei Ding
- Guangdong Engineering and Technology Research Center for Advanced Nanomaterials, Dongguan University of Technology, Dongguan 523808, P. R. China
- School of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China
| | - Zu Man
- Guangdong Engineering and Technology Research Center for Advanced Nanomaterials, Dongguan University of Technology, Dongguan 523808, P. R. China
| | - Yinan Zeng
- Guangdong Engineering and Technology Research Center for Advanced Nanomaterials, Dongguan University of Technology, Dongguan 523808, P. R. China
| | - Bochi Pan
- Guangdong Engineering and Technology Research Center for Advanced Nanomaterials, Dongguan University of Technology, Dongguan 523808, P. R. China
| | - Jun-Jie Zhu
- Guangdong Engineering and Technology Research Center for Advanced Nanomaterials, Dongguan University of Technology, Dongguan 523808, P. R. China
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
| | - Min Zhang
- Guangdong Engineering and Technology Research Center for Advanced Nanomaterials, Dongguan University of Technology, Dongguan 523808, P. R. China
| | - Faliang Cheng
- Guangdong Engineering and Technology Research Center for Advanced Nanomaterials, Dongguan University of Technology, Dongguan 523808, P. R. China
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2
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Johnston N, Dubay MM, Serabyn E, Nadeau JL. Detectability of unresolved particles in off-axis digital holographic microscopy. APPLIED OPTICS 2024; 63:B114-B125. [PMID: 38437262 DOI: 10.1364/ao.507375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 01/09/2024] [Indexed: 03/06/2024]
Abstract
Off-axis digital holographic microscopy (DHM) provides both amplitude and phase images, and so it may be used for label-free 3D tracking of micro- and nano-sized particles of different compositions, including biological cells, strongly absorbing particles, and strongly scattering particles. Contrast is provided by differences in either the real or imaginary parts of the refractive index (phase contrast and absorption) and/or by scattering. While numerous studies have focused on phase contrast and improving resolution in DHM, particularly axial resolution, absent have been studies quantifying the limits of detection for unresolved particles. This limit has important implications for microbial detection, including in life-detection missions for space flight. Here we examine the limits of detection of nanosized particles as a function of particle optical properties, microscope optics (including camera well depth and substrate), and data processing techniques and find that DHM provides contrast in both amplitude and phase for unresolved spheres, in rough agreement with Mie theory scattering cross-sections. Amplitude reconstructions are more useful than phase for low-index spheres and should not be neglected in DHM analysis.
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3
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Kathiravan A, Narayanan M, Asha Jhonsi M, Anbazhagan V. Receptor-free phenothiazine derivative as fluorescent probe for picric acid: Investigation of the inner filter effect channel. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 303:123166. [PMID: 37481841 DOI: 10.1016/j.saa.2023.123166] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 07/06/2023] [Accepted: 07/15/2023] [Indexed: 07/25/2023]
Abstract
In this study, a highly fluorescent and receptor-free phenothiazine derivative (PDAB) was developed to detect picric acid. A combination of steady-state and time-resolved fluorescence studies was conducted to examine the excited state behavior of PDAB with picric acid in solution. The PDAB probe displayed a significant degree of selectivity and was highly sensitive to picric acid, with an extremely low detection limit of 9.82 nM. Time-resolved fluorescence quenching studies exhibit direct evidence of an inner filter effect-based sensing mechanism. Using the Parker equation, a thorough analysis was done to correct the inner filter effect on the sensing of picric acid. Overall, these studies provide critical information on the sensing mechanism for picric acid detection.
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Affiliation(s)
- Arunkumar Kathiravan
- Department of Chemistry & (1)Centre for Molecular Photoscience, Vel Tech Rangarajan Dr. Sagunthala R & D Institute of Science and Technology, Avadi, Chennai - 600 062, Tamil Nadu, India.
| | - Mahalakshmi Narayanan
- Department of Chemistry & (1)Centre for Molecular Photoscience, Vel Tech Rangarajan Dr. Sagunthala R & D Institute of Science and Technology, Avadi, Chennai - 600 062, Tamil Nadu, India
| | - Mariadoss Asha Jhonsi
- Department of Chemistry, B. S. Abdur Rahman Crescent Institute of Science and Technology, Chennai-600 048, Tamil Nadu, India
| | - Venkattappan Anbazhagan
- Department of Chemistry, Vinayaka Mission's Kirupananda Variyar Arts and Science College, Vinayaka Mission's Research Foundation (Deemed to be University), Salem 636 308, India.
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4
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Cai W, Huang H, Li Z, Li X, Fan J, Zhang S, Feng G, Chen J. Compact Fluorescence Spectrometer with Built-In In-Line Calibration: Application to Detect Dissolved Organic Matter in Water. Anal Chem 2023; 95:14228-14234. [PMID: 37699407 DOI: 10.1021/acs.analchem.3c02200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/14/2023]
Abstract
Fluorescence spectrometer (FS) is widely used for component analysis because each fluorescing material has its own characteristic spectrum. However, the spectral calibration is complicated and bulky. Herein, an in-line spectral calibration sheet (ISCS) was proposed in which a narrow band-pass filter and a linear variable filter (LVF) were integrated on a metal plate. By moving the ISCS, the transmitted excitation light power (TEP) as well as fluorescence spectrum can be seamlessly scanned, and the TEP can be used for in-line spectral calibration. A compact FS apparatus based on UV-LED excitation, metal capillary (MC) and ISCS was fabricated (i.e., ISCS-FS), and the ISCS-FS apparatus was applied to detect sodium humate in water. By employing TEP calibration, both the primary inner filter effect (PIFE) and the drift in the optical power of UV-LED can be simultaneously compensated. The linear correlation coefficient of signal concentration was improved from 0.89 to 0.998, and the relative standard deviation (RSD) of replicated detection was improved from 3 to 0.7%. A detection limit of concentration (DLC) of 1.3 μg/L was realized, which is 15-fold lower than that of a commercial FS apparatus (20 μg/L). The DLC is even comparable with that (0.5-4 μg/L) of commercial total organic carbon (TOC) analyzers, which are bulky and expensive. The linear correlation between the measurement results of ISCS-FS and commercial TOC analyzers can reach a good value of 0.94.
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Affiliation(s)
- Weicheng Cai
- School of Artificial Intelligence, Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Hui Huang
- School of Artificial Intelligence, Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Zhaolin Li
- School of Artificial Intelligence, Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Xuejing Li
- School of Artificial Intelligence, Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Jianchao Fan
- National Marine Environmental Monitoring Center of China, Dalian 116023, China
| | - Shuo Zhang
- National Marine Environmental Monitoring Center of China, Dalian 116023, China
| | - Guojin Feng
- National Institute of Metrology of China, Beijing 100029, China
| | - Jing Chen
- Electrical & Electronic Experimental Center, Dalian University of Technology, Dalian 116024, China
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5
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Zhang Q, Yin B, Huang Y, Gu Y, Yan J, Chen J, Li C, Zhang Y, Wong SHD, Yang M. A dual “turn-on” biosensor based on AIE effect and FRET for in situ detection of miR-125b biomarker in early Alzheimer's disease. Biosens Bioelectron 2023; 230:115270. [PMID: 37023551 DOI: 10.1016/j.bios.2023.115270] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 03/22/2023] [Accepted: 03/26/2023] [Indexed: 04/03/2023]
Abstract
MicroRNA-125b (miR-125b) is highly associated with synaptic dysfunction and tau hyperphosphorylation in the early pathogenesis of Alzheimer's disease (AD), making it a promising biomarker for early AD diagnosis. Hence, there is an urgent need for a reliable sensing platform to assist in situ miR-125b detection. In this work, we report a dual "turn-on" fluorescence biosensor based on the nanocomposite of aggregation-induced emission fluorogen (AIEgen)-labeled oligonucleotide (TPET-DNA) probes immobilized on the surface of cationic dextran modified molybdenum disulfide (TPET-DNA@Dex-MoS2). In the presence of the target, TEPT-DNA can hybridize with miR-125b to form a DNA/RNA duplex, causing TPET-DNA to detach from the surface of Dex-MoS2 that simultaneously activates the dual fluorescence enhancement processes: (1) recovery of TPET-DNA signal and (2) strong fluorescent emission from AIEgen triggered by restriction of the intramolecular rotation. The sensing performance of TPET-DNA@Dex-MoS2 was demonstrated by detecting miR-125b in vitro with good sensitivity at the picomolar level and rapid response (≤1 h) without amplification procedures. Furthermore, our nanoprobes exhibited excellent imaging capabilities to aid real-time monitoring of the endogenous miR-125b in PC12 cells and brain tissues of mice AD model induced by local administration of okadaic acid (OA). The fluorescence signals of the nanoprobes indicated miR-125b was spatially associated with phosphorylated tau protein (p-tau) in vitro and in vivo. Therefore, TPET-DNA@Dex-MoS2 could be a promising tool for in situ and real-time monitoring of the AD-related microRNAs and also provide mechanistic insight into the early prognosis of AD.
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6
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Tranos J, Das A, Zhang J, Hafeez S, Arvanitakis GN, Thomson SAJ, Khan S, Pandya N, Kim SG, Wadghiri YZ. Rapid In Vitro Quantification of a Sensitized Gadolinium Chelate via Photoinduced Triplet Harvesting. ACS OMEGA 2023; 8:2907-2914. [PMID: 36713694 PMCID: PMC9878670 DOI: 10.1021/acsomega.2c05040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Accepted: 11/18/2022] [Indexed: 06/18/2023]
Abstract
Gadolinium (Gd) based contrast agents (GBCAs) are widely used in magnetic resonance imaging (MRI) and are paramount to cancer diagnostics and tumor pharmacokinetic analysis. Accurate quantification of gadolinium concentration is essential to monitoring the biodistribution, clearance, and pharmacodynamics of GBCAs. However, current methods of quantifying gadolinium in blood or plasma (biological media) are both low throughput and clinically unavailable. Here, we have demonstrated the use of a sensitized gadolinium chelate, Gd[DTPA-cs124], as an MRI contrast agent that can be used to measure the concentration of gadolinium via luminescence quantification in biological media following transmetalation with a terbium salt. Gd[DTPA-cs124] was synthesized by conjugating carbostyril-124 (cs124) to diethylenetriaminepentaacetic acid (DTPA) and chelating to gadolinium. We report increases in both stability and relaxivity compared to the clinically approved analog Gd[DTPA] (gadopentetic acid or Magnevist). In vivo MRI experiments were conducted using C57BL6 mice in order to further illustrate the performance of Gd[DTPA-cs124] as an MRI contrast agent in comparison to Magnevist. Our results indicate that similar chemical modification to existing clinically approved GBCA may likewise provide favorable property changes, with the ability to be used in a gadolinium quantification assay. Furthermore, our assay provides a straightforward and high-throughput method of measuring gadolinium in biological media using a standard laboratory plate reader.
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Affiliation(s)
- James
A. Tranos
- Center
for Biomedical Imaging (CBI), Center for Advanced Imaging Innovation
and Research (CAI2R), Department of Radiology, NYU Grossman School of Medicine, New York, New York 10016, United States
| | - Ayesha Das
- Department
of Radiology, Weill Cornell Medical College, New York, New York 10065, United States
| | - Jin Zhang
- Department
of Radiology, Weill Cornell Medical College, New York, New York 10065, United States
| | - Sonia Hafeez
- Center
for Biomedical Imaging (CBI), Center for Advanced Imaging Innovation
and Research (CAI2R), Department of Radiology, NYU Grossman School of Medicine, New York, New York 10016, United States
| | | | | | - Suleiman Khan
- Center
for Biomedical Imaging (CBI), Center for Advanced Imaging Innovation
and Research (CAI2R), Department of Radiology, NYU Grossman School of Medicine, New York, New York 10016, United States
| | - Neelam Pandya
- Center
for Biomedical Imaging (CBI), Center for Advanced Imaging Innovation
and Research (CAI2R), Department of Radiology, NYU Grossman School of Medicine, New York, New York 10016, United States
| | - Sungheon Gene Kim
- Department
of Radiology, Weill Cornell Medical College, New York, New York 10065, United States
| | - Youssef Z. Wadghiri
- Center
for Biomedical Imaging (CBI), Center for Advanced Imaging Innovation
and Research (CAI2R), Department of Radiology, NYU Grossman School of Medicine, New York, New York 10016, United States
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7
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Armenia I, Cuestas Ayllón C, Torres Herrero B, Bussolari F, Alfranca G, Grazú V, Martínez de la Fuente J. Photonic and magnetic materials for on-demand local drug delivery. Adv Drug Deliv Rev 2022; 191:114584. [PMID: 36273514 DOI: 10.1016/j.addr.2022.114584] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 09/26/2022] [Accepted: 10/16/2022] [Indexed: 02/06/2023]
Abstract
Nanomedicine has been considered a promising tool for biomedical research and clinical practice in the 21st century because of the great impact nanomaterials could have on human health. The generation of new smart nanomaterials, which enable time- and space-controlled drug delivery, improve the limitations of conventional treatments, such as non-specific targeting, poor biodistribution and permeability. These smart nanomaterials can respond to internal biological stimuli (pH, enzyme expression and redox potential) and/or external stimuli (such as temperature, ultrasound, magnetic field and light) to further the precision of therapies. To this end, photonic and magnetic nanoparticles, such as gold, silver and iron oxide, have been used to increase sensitivity and responsiveness to external stimuli. In this review, we aim to report the main and most recent systems that involve photonic or magnetic nanomaterials for external stimulus-responsive drug release. The uniqueness of this review lies in highlighting the versatility of integrating these materials within different carriers. This leads to enhanced performance in terms of in vitro and in vivo efficacy, stability and toxicity. We also point out the current regulatory challenges for the translation of these systems from the bench to the bedside, as well as the yet unresolved matter regarding the standardization of these materials.
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Affiliation(s)
- Ilaria Armenia
- BioNanoSurf Group, Instituto de Nanociencia y Materiales de Aragón (INMA,CSIC-UNIZAR), Edificio I +D, 50018 Zaragoza, Spain.
| | - Carlos Cuestas Ayllón
- BioNanoSurf Group, Instituto de Nanociencia y Materiales de Aragón (INMA,CSIC-UNIZAR), Edificio I +D, 50018 Zaragoza, Spain
| | - Beatriz Torres Herrero
- BioNanoSurf Group, Instituto de Nanociencia y Materiales de Aragón (INMA,CSIC-UNIZAR), Edificio I +D, 50018 Zaragoza, Spain
| | - Francesca Bussolari
- BioNanoSurf Group, Instituto de Nanociencia y Materiales de Aragón (INMA,CSIC-UNIZAR), Edificio I +D, 50018 Zaragoza, Spain
| | - Gabriel Alfranca
- BioNanoSurf Group, Instituto de Nanociencia y Materiales de Aragón (INMA,CSIC-UNIZAR), Edificio I +D, 50018 Zaragoza, Spain
| | - Valeria Grazú
- BioNanoSurf Group, Instituto de Nanociencia y Materiales de Aragón (INMA,CSIC-UNIZAR), Edificio I +D, 50018 Zaragoza, Spain; Centro de Investigación Biomédica em Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Avenida Monforte de Lemos, 3-5, 28029 Madrid, Spain.
| | - Jesús Martínez de la Fuente
- BioNanoSurf Group, Instituto de Nanociencia y Materiales de Aragón (INMA,CSIC-UNIZAR), Edificio I +D, 50018 Zaragoza, Spain; Centro de Investigación Biomédica em Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Avenida Monforte de Lemos, 3-5, 28029 Madrid, Spain.
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8
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Teclemichael E, Le ATH, Krylova SM, Wang TY, Krylov SN. Bulk Affinity Assays in Aptamer Selection: Challenges, Theory, and Workflow. Anal Chem 2022; 94:15183-15188. [DOI: 10.1021/acs.analchem.2c03173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Eden Teclemichael
- Department of Chemistry and Centre for Research on Biomolecular Interactions, York University, Toronto, OntarioM3J 1P3, Canada
| | - An T. H. Le
- Department of Chemistry and Centre for Research on Biomolecular Interactions, York University, Toronto, OntarioM3J 1P3, Canada
| | - Svetlana M. Krylova
- Department of Chemistry and Centre for Research on Biomolecular Interactions, York University, Toronto, OntarioM3J 1P3, Canada
| | - Tong Ye Wang
- Department of Chemistry and Centre for Research on Biomolecular Interactions, York University, Toronto, OntarioM3J 1P3, Canada
| | - Sergey N. Krylov
- Department of Chemistry and Centre for Research on Biomolecular Interactions, York University, Toronto, OntarioM3J 1P3, Canada
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9
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Lu Q, Qian J, Xu F, He G, Liu Y, Xia J. Synthesis of
2D
fluorescent polyaniline derivatives as multifunctional fluorescent chemosensor. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20220503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Qingyi Lu
- Hubei Key Lab on Organic and Polymeric Optoelectronic Materials College of Chemistry and Molecular Sciences, Wuhan University Wuhan People's Republic of China
| | - Junning Qian
- Hubei Key Lab on Organic and Polymeric Optoelectronic Materials College of Chemistry and Molecular Sciences, Wuhan University Wuhan People's Republic of China
| | - Feng Xu
- Hubei Key Lab on Organic and Polymeric Optoelectronic Materials College of Chemistry and Molecular Sciences, Wuhan University Wuhan People's Republic of China
| | - Guohang He
- Hubei Key Lab on Organic and Polymeric Optoelectronic Materials College of Chemistry and Molecular Sciences, Wuhan University Wuhan People's Republic of China
| | - Yuwen Liu
- Hubei Key Lab on Organic and Polymeric Optoelectronic Materials College of Chemistry and Molecular Sciences, Wuhan University Wuhan People's Republic of China
| | - Jiangbin Xia
- Hubei Key Lab on Organic and Polymeric Optoelectronic Materials College of Chemistry and Molecular Sciences, Wuhan University Wuhan People's Republic of China
- Engineering Research Center of Organosilicon Compounds & Materials Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University Wuhan People's Republic of China
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10
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Lu S, Gao Y, Geng X, Guan Y. Peltier thermoelectric cooler improves both the signal-to-noise ratio and warm-up time of high-power LED induced fluorescence detector and application to aflatoxins. Anal Chim Acta 2022; 1192:339392. [DOI: 10.1016/j.aca.2021.339392] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 12/15/2021] [Accepted: 12/20/2021] [Indexed: 11/25/2022]
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11
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Amina M, Al Musayeib NM, Alarfaj NA, El-Tohamy MF, Al-Hamoud GA, Alqenaei MKM. The Fluorescence Detection of Phenolic Compounds in Plicosepalus curviflorus Extract Using Biosynthesized ZnO Nanoparticles and Their Biomedical Potential. PLANTS (BASEL, SWITZERLAND) 2022; 11:361. [PMID: 35161341 PMCID: PMC8839429 DOI: 10.3390/plants11030361] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 01/11/2022] [Accepted: 01/11/2022] [Indexed: 05/27/2023]
Abstract
A facile, eco-friendly fluorescence approach based on the biogenic formation of zinc oxide nanoparticles using the biomass of Plicosepalus curviflorus shoots was developed. The suggested approach was employed to analyze three phenolic compounds (catechin, curviflorside, and curviflorin) isolated from the shoots of P. curviflorus. The surface morphology of the prepared ZnONPs was characterized by carrying out different microscopic and spectroscopic investigations. A significant UV-Vis absorption peak of ZnONPs was recognized at 345 nm and the FT-IR spectra of the isolated catechin, curviflorside, and curviflorin in the presence of sodium dodecyl sulfate (SDS) and ZnONPs were recorded at λem 470, 490, and 484 nm after excitation at λex 380, 420, and 410 nm. The suggested fluorescence method displayed linear concentration ranges of 10-120, 5-100, and 10-150 μg mL-1 for the three isolated compounds, respectively. The shoot extract, isolated compounds, and ZnONPs were screened for antibacterial and anticancer effects against four different types of bacterial strains and HeLa cells, respectively. The ZnONPs exhibited the highest zone of inhibition against Escherichia coli and Staphylococcus aureus strains when compared with pure, isolated compounds and shoot extract. The anticancer potential of ZnONPs (64%) was stronger as compared to the 160 µg mL-1 of shoot extract (49%), catechin (52%), curviflorside (54%), and curviflorin (58%) at 160 µg mL-1. Moreover, all the samples were investigated for hemolysis activity and showed a potent anti-hemolytic effect. The developed analytical method showed excellent sensitivity and reliability for the concurrent analysis of the isolated bioactive markers.
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Affiliation(s)
- Musarat Amina
- Department of Pharmacognosy, Pharmacy College, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Nawal M. Al Musayeib
- Department of Pharmacognosy, Pharmacy College, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Nawal A. Alarfaj
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (N.A.A.); (M.F.E.-T.)
| | - Maha F. El-Tohamy
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (N.A.A.); (M.F.E.-T.)
| | - Gadah A. Al-Hamoud
- Department of Pharmacognosy, Pharmacy College, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Muneerah K. M. Alqenaei
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia;
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12
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Le ATH, Wang TY, Krylova SM, Beloborodov SS, Krylov SN. Quantitative Characterization of Partitioning in Selection of DNA Aptamers for Protein Targets by Capillary Electrophoresis. Anal Chem 2022; 94:2578-2588. [DOI: 10.1021/acs.analchem.1c04560] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- An T. H. Le
- Department of Chemistry and Centre for Research on Biomolecular Interactions, York University, Toronto, Ontario M3J 1P3, Canada
| | - Tong Ye Wang
- Department of Chemistry and Centre for Research on Biomolecular Interactions, York University, Toronto, Ontario M3J 1P3, Canada
| | - Svetlana M. Krylova
- Department of Chemistry and Centre for Research on Biomolecular Interactions, York University, Toronto, Ontario M3J 1P3, Canada
| | - Stanislav S. Beloborodov
- Department of Chemistry and Centre for Research on Biomolecular Interactions, York University, Toronto, Ontario M3J 1P3, Canada
| | - Sergey N. Krylov
- Department of Chemistry and Centre for Research on Biomolecular Interactions, York University, Toronto, Ontario M3J 1P3, Canada
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13
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Zhang R, Lu H, Zong S, Lu C, Yun B, Hu G, Zhu L, Cui Y. Silicon-assisted surface enhanced fluorescence toward improved assay performances. NANOTECHNOLOGY 2021; 32:125201. [PMID: 33254158 DOI: 10.1088/1361-6528/abcef4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A novel scheme of silicon-assisted surface enhanced fluorescence (SEF) is presented for SEF-based assays, where the blank signal suppression and the fluorescence signal enhancement is combined. The P-doped, (100) oriented silicon substrate is used to quench the fluorescence of Rose Bengal (RB) molecules attached to it, resulting in an effectively suppressed background signal, which is useful for a lower limit of detection (LOD). When a proper quantity of silver nanoparticles (AgNPs) is deposited on the RB-attached silicon substrate, a significant fluorescence enhancement of up to around 290 fold is obtained, which helps to improve the sensitivity in fluorescence-based assays. Besides, conventional gold nanoparticles (AuNPs) have also been demonstrated to exhibit excellent SEF effect using the presented scheme, providing improved stability and biocompatibility. The mechanism of the observed SEF effect has been investigated, and both the decreased apparent quantum yield and the silicon-induced electric field redistribution are considered to play important roles. The experimental results suggest that the presented scheme holds great potential in the SEF-based assays aiming at higher sensitivity and lower LOD.
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Affiliation(s)
- Ruohu Zhang
- Advanced Photonics Center, Southeast University, Nanjing 210096, Jiangsu, People's Republic of China
| | - Hui Lu
- Advanced Photonics Center, Southeast University, Nanjing 210096, Jiangsu, People's Republic of China
| | - Shenfei Zong
- Advanced Photonics Center, Southeast University, Nanjing 210096, Jiangsu, People's Republic of China
| | - Changgui Lu
- Advanced Photonics Center, Southeast University, Nanjing 210096, Jiangsu, People's Republic of China
| | - Binfeng Yun
- Advanced Photonics Center, Southeast University, Nanjing 210096, Jiangsu, People's Republic of China
| | - Guohua Hu
- Advanced Photonics Center, Southeast University, Nanjing 210096, Jiangsu, People's Republic of China
| | - Li Zhu
- Advanced Photonics Center, Southeast University, Nanjing 210096, Jiangsu, People's Republic of China
| | - Yiping Cui
- Advanced Photonics Center, Southeast University, Nanjing 210096, Jiangsu, People's Republic of China
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14
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A broad-spectrum sensing strategy for the tetracycline family of antibiotics based on an ovalbumin-stabilized gold nanocluster and its application in a pump-free microfluidic sensing platform. Biosens Bioelectron 2021; 171:112701. [PMID: 33096433 DOI: 10.1016/j.bios.2020.112701] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 09/26/2020] [Accepted: 10/06/2020] [Indexed: 11/23/2022]
Abstract
With increasing concerns related to the abuse of antibiotics in livestock production worldwide, simple and rapid screening methods for monitoring antibiotics in animal-derived foods are highly desirable. In this study, we propose a facile synthesis strategy for gold nanoclusters (AuNCs) exhibiting remarkable optical properties by employing ovalbumin (OVA) as the template. The OVA-stabilized AuNCs (AuNCs@OVA) manifest intriguing multicolour fluorescence and a gradually declining fluorescence intensity at 650 nm with an increasing concentration of tetracycline family antibiotics (TCs) including tetracycline, chlorotetracycline, oxytetracycline, and doxycycline, which are a widely used class of antibiotics for treating infections in food-producing animals. This performance makes AuNCs@OVA particularly attractive as a broad-spectrum detector for TCs sensing, and we demonstrate that this simple sensing procedure can be realized in real time by directly mixing the target sample and AuNCs@OVA components. Based on this sensing strategy, a microfluidic lab-on-a-chip platform was constructed for the ultrarapid detection of TCs within 30 s. The detection limit was determined to be 0.09 μg/mL in chicken muscle extract, with the recovery ranging from 86.20% to 93.57% in spiked samples. This work provides not only a broad-spectrum sensing strategy for TCs but also a pump-free microfluidic chip with the advantages of being portable, ultrarapid, and low cost, offering a viable alternative for on-the-spot ultrarapid screening of TCs.
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15
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Galievsky V, Pawliszyn J. Fluorometer for Screening of Doxorubicin in Perfusate Solution and Tissue with Solid-Phase Microextraction Chemical Biopsy Sampling. Anal Chem 2020; 92:13025-13033. [PMID: 32847350 DOI: 10.1021/acs.analchem.0c01905] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The recent development of an in vivo solid-phase microextraction (SPME) method capable of analyzing drugs and metabolic products in biofluids and living tissues holds great promise. The standard in vivo SPME protocol based on mass spectrometry is a very powerful analytical approach, but it is not practical for on-site analysis in many cases. In this paper, we present a fluorescence-based SPME method and a prototype of a portable fluorometer that is capable of quickly quantifying concentrations of the anticancer drug, doxorubicin (DOX). The instrument uses thin coated, biocompatible SPME fibers, which we have previously presented as a chemical biopsy tool for use during in vivo lung perfusion (IVLP) procedures within a hospital setting. In this research, we test SPME fibers with C8-SCX, C18, and HLB coatings with our fluorometer. The mixed-mode C8-SCX fibers showed the best sensitivity of the three and were therefore used to examine DOX extraction from perfusate solution and a homogenized lamb lung tissue. The maximum concentration of free active sites in the C8-SCX fiber and the adsorption equilibrium constant were determined to be (9.1 ± 0.3) × 10-7 mol m-2 and 420 ± 30 m3 mol-1, respectively. Finally, the detection limits for DOX extracted from buffer, perfusate, and lung tissue were 40, 100, and 3700 μg L-1, respectively.
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Affiliation(s)
- Victor Galievsky
- Department of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Janusz Pawliszyn
- Department of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
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16
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Optofluidic Formaldehyde Sensing: Towards On-Chip Integration. MICROMACHINES 2020; 11:mi11070673. [PMID: 32664311 PMCID: PMC7407611 DOI: 10.3390/mi11070673] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 07/06/2020] [Accepted: 07/09/2020] [Indexed: 01/19/2023]
Abstract
Formaldehyde (HCHO), a chemical compound used in the fabrication process of a broad range of household products, is present indoors as an airborne pollutant due to its high volatility caused by its low boiling point (T=−19 °C). Miniaturization of analytical systems towards palm-held devices has the potential to provide more efficient and more sensitive tools for real-time monitoring of this hazardous air pollutant. This work presents the initial steps and results of the prototyping process towards on-chip integration of HCHO sensing, based on the Hantzsch reaction coupled to the fluorescence optical sensing methodology. This challenge was divided into two individually addressed problems: (1) efficient airborne HCHO trapping into a microfluidic context and (2) 3,5–diacetyl-1,4-dihydrolutidine (DDL) molecular sensing in low interrogation volumes. Part (2) was addressed in this paper by proposing, fabricating, and testing a fluorescence detection system based on an ultra-low light Complementary metal-oxide-semiconductor (CMOS) image sensor. Two three-layer fluidic cell configurations (quartz–SU-8–quartz and silicon–SU-8–quartz) were tested, with both possessing a 3.5 µL interrogation volume. Finally, the CMOS-based fluorescence system proved the capability to detect an initial 10 µg/L formaldehyde concentration fully derivatized into DDL for both the quartz and silicon fluidic cells, but with a higher signal-to-noise ratio (SNR) for the silicon fluidic cell (SNRsilicon=6.1) when compared to the quartz fluidic cell (SNRquartz=4.9). The signal intensity enhancement in the silicon fluidic cell was mainly due to the silicon absorption coefficient at the excitation wavelength, a(λabs=420 nm)=5×104 cm−1, which is approximately five times higher than the absorption coefficient at the fluorescence emission wavelength, a(λem=515 nm)=9.25×103 cm−1.
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17
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Liu M, Zhai W, Chen H, Zhang H, Li C. Halogen Effects-Induced Bright D−π–A Fluorophore as Scaffold for NIR Fluorogenic Probes with High Contrast. Anal Chem 2020; 92:10792-10799. [DOI: 10.1021/acs.analchem.0c02247] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Ming Liu
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Key Laboratory of Functional Polymer Materials of Ministry of Education, Nankai University, Tianjin 300071, P. R. China
| | - Wenhao Zhai
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Key Laboratory of Functional Polymer Materials of Ministry of Education, Nankai University, Tianjin 300071, P. R. China
| | - Haoliang Chen
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Key Laboratory of Functional Polymer Materials of Ministry of Education, Nankai University, Tianjin 300071, P. R. China
| | - Hao Zhang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Key Laboratory of Functional Polymer Materials of Ministry of Education, Nankai University, Tianjin 300071, P. R. China
- School of Material Science and Engineering, Tiangong University, Tianjin 300387, P. R. China
| | - Changhua Li
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Key Laboratory of Functional Polymer Materials of Ministry of Education, Nankai University, Tianjin 300071, P. R. China
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18
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Wang Y, Li Z, Lin Q, Wei Y, Wang J, Li Y, Yang R, Yuan Q. Highly Sensitive Detection of Bladder Cancer-Related miRNA in Urine Using Time-Gated Luminescent Biochip. ACS Sens 2019; 4:2124-2130. [PMID: 31313911 DOI: 10.1021/acssensors.9b00927] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Detection of biomarkers in complex samples is a significant health plan strategy for medical diagnosis, therapy monitoring, and health management. However, high background noise resulting from impurities and other analytes in complex samples has hampered the improvement of detection sensitivity and accuracy. Herein, an ultralow background biochip based on time-gated luminescent probes supported by photonic crystals (PCs) was successfully developed for detection of bladder cancer (BC)-related miRNA biomarkers with high sensitivity and specificity in urine samples. Coupled with the time-gated luminescence of long-lifetime luminescence probes and the luminescence-enhanced capability of PCs, the short-lived autofluorescence can be efficiently removed; thus, the detection sensitivity will be significantly improved. Benefiting from these merits, a detection limit of 26.3 fM is achieved. Furthermore, the biochip exhibits excellent performance in urinary miRNA detection, and good recoveries are also obtained. The developed biochip possesses unique properties of ultralow background and luminescence enhancement, thus offering a suitable tool for the detection of BC-related miRNA in urine. With rational design of probe sequences, the biochip holds great potential for many other biomarkers in real patient samples, making it valuable in areas such as medical diagnosis and disease evaluation.
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Affiliation(s)
- Yingqian Wang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry, Wuhan University, Wuhan 430072, China
| | - Zhihao Li
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry, Wuhan University, Wuhan 430072, China
| | - Qiaosong Lin
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry, Wuhan University, Wuhan 430072, China
| | - Yurong Wei
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry, Wuhan University, Wuhan 430072, China
| | - Jie Wang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry, Wuhan University, Wuhan 430072, China
| | - Yingxue Li
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry, Wuhan University, Wuhan 430072, China
| | - Ronghua Yang
- School of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha 410004, China
| | - Quan Yuan
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry, Wuhan University, Wuhan 430072, China
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
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19
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Le ATH, Krylova SM, Krylov SN. Determination of the Equilibrium Constant and Rate Constant of Protein-Oligonucleotide Complex Dissociation under the Conditions of Ideal-Filter Capillary Electrophoresis. Anal Chem 2019; 91:8532-8539. [PMID: 31136154 DOI: 10.1021/acs.analchem.9b01801] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Ideal-filter capillary electrophoresis (IFCE) allows selection of protein binders from oligonucleotide libraries in a single step of partitioning in which protein-bound and unbound oligonucleotides move in the opposite directions. In IFCE, the unbound oligonucleotide does not reach the detector, imposing a problem for finding the equilibrium constant ( Kd) and rate constant ( koff) of protein-oligonucleotide complex dissociation. We report a double-passage approach that allows finding Kd and koff under the IFCE conditions, i.e. near-physiological pH and ionic strength. First, a plug of the protein-oligonucleotide equilibrium mixture passes to the detector in a pressure-driven flow, allowing for both the complex and free oligonucleotide to be detected as a single first peak. Second, the pressure is turned off and the voltage is applied to reverse the migration of only the complex which is detected as the second peak. The experiment is repeated with a lower voltage consequently resulting in longer travel time of the complex to the detector, greater extent of complex dissociation, and the decreased area of the second peak. Finally, the peak areas are used to calculate the values of Kd and koff. Here we explain theoretical and practical aspects of the double-passage approach, prove its validity quantitatively, and, demonstrate its application to determine Kd and koff for an affinity complex between a protein and its DNA aptamer. The double-passage approach for finding Kd and koff of protein-oligonucleotide complexes under the IFCE conditions is a perfect complement for IFCE-based selection of protein binders from oligonucleotide libraries.
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Affiliation(s)
- An T H Le
- Department of Chemistry and Centre for Research on Biomolecular Interactions , York University , Toronto , Ontario M3J 1P3 , Canada
| | - Svetlana M Krylova
- Department of Chemistry and Centre for Research on Biomolecular Interactions , York University , Toronto , Ontario M3J 1P3 , Canada
| | - Sergey N Krylov
- Department of Chemistry and Centre for Research on Biomolecular Interactions , York University , Toronto , Ontario M3J 1P3 , Canada
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20
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Le ATH, Krylova SM, Krylov SN. Ideal-filter capillary electrophoresis: A highly efficient partitioning method for selection of protein binders from oligonucleotide libraries. Electrophoresis 2019; 40:2553-2564. [PMID: 31069842 DOI: 10.1002/elps.201900028] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 04/16/2019] [Accepted: 05/02/2019] [Indexed: 12/22/2022]
Abstract
Selection of affinity ligands for protein targets from oligonucleotide libraries currently involves multiple rounds of alternating steps of partitioning of protein-bound oligonucleotides (binders) from protein-unbound oligonucleotides (nonbinders). We have recently introduced ideal-filter capillary electrophoresis (IFCE) for binder selection in a single step of partitioning. In IFCE, protein-binder complexes and nonbinders move inside the capillary in the opposite directions, and the efficiency of their partitioning reaches 109 , i.e., only one of a billion molecules of nonbinders leaks through IFCE while all binders pass through. The condition of IFCE can be satisfied when the magnitude of the mobility of EOF is smaller than that of the protein-binder complexes and larger than that of nonbinders. The efficiency of partitioning in IFCE is 10 million times higher than those of solid-phase-based methods of partitioning typically used in selection of affinity ligands for protein targets from oligonucleotide libraries. Here, we provide additional details on our justification for IFCE development. We elaborate on electrophoretic aspects of the method and define the theoretical range of EOF mobilities that support IFCE. Based on these theoretical results, we identify an experimental range of background electrolyte's ionic strength that supports IFCE. We also extend our interpretation of the results and discuss in-depth IFCE's prospective in practical applications and fundamental studies.
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Affiliation(s)
- An T H Le
- Department of Chemistry and Centre for Research on Biomolecular Interactions, York University, Toronto, Ontario, Canada
| | - Svetlana M Krylova
- Department of Chemistry and Centre for Research on Biomolecular Interactions, York University, Toronto, Ontario, Canada
| | - Sergey N Krylov
- Department of Chemistry and Centre for Research on Biomolecular Interactions, York University, Toronto, Ontario, Canada
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21
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Absorption, distribution, metabolism and excretion of the biomaterials used in Nanocarrier drug delivery systems. Adv Drug Deliv Rev 2019; 143:97-114. [PMID: 31255595 DOI: 10.1016/j.addr.2019.06.008] [Citation(s) in RCA: 94] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Revised: 06/16/2019] [Accepted: 06/25/2019] [Indexed: 12/13/2022]
Abstract
Nanocarriers (NCs) are a type of drug delivery system commonly used to regulate the pharmacokinetic and pharmacodynamic properties of drugs. Although a wide variety of NCs has been developed, relatively few have been registered for clinical trials and even fewer are clinically approved. Overt or potential toxicity, indistinct mechanisms of drug release and unsatisfactory pharmacokinetic behavior all contribute to their high failure rate during preclinical and clinical testing. These negative characteristics are not only due to the NCs themselves but also to the materials of the drug nanocarrier system (MDNS) that are released in vivo. In this article, we review the main analytical techniques used for bioassay of NCs and MDNS and their pharmacokinetics after administration by various routes. We anticipate our review will serve to improve the understanding of MDNS pharmacokinetics and facilitate the development of NC drug delivery systems.
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22
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Koshkin V, Kochmann S, Sorupanathan A, Peng C, Ailles LE, Liu G, Krylov SN. Cytometry of Reaction Rate Constant: Measuring Reaction Rate Constant in Individual Cells To Facilitate Robust and Accurate Analysis of Cell-Population Heterogeneity. Anal Chem 2019; 91:4186-4194. [PMID: 30829484 DOI: 10.1021/acs.analchem.9b00388] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Robust and accurate analysis of cell-population heterogeneity is challenging but required in many areas of biology and medicine. In particular, it is pivotal to the development of reliable cancer biomarkers. Here, we prove that cytometry of reaction rate constant (CRRC) can facilitate such analysis when the kinetic mechanism of a reaction associated with the heterogeneity is known. In CRRC, the cells are loaded with a reaction substrate, and its conversion into a product is followed by time-lapse fluorescence microscopy at the single-cell level. A reaction rate constant is determined for every cell, and a kinetic histogram "number of cells versus the rate constant" is used to determine quantitative parameters of reaction-based cell-population heterogeneity. Such parameters include, for example, the number and sizes of subpopulations. In this work, we applied CRRC to a reaction of substrate extrusion from cells by ATP-binding cassette (ABC) transporters. This reaction is viewed as a potential basis for predictive biomarkers of chemoresistance in cancer. CRRC proved to be robust (insensitive to variations in experimental settings) and accurate for finding quantitative parameters of cell-population heterogeneity. In contrast, a typical nonkinetic analysis, performed on the same data sets, proved to be both nonrobust and inaccurate. Our results suggest that CRRC can potentially facilitate the development of reliable cancer biomarkers on the basis of quantitative parameters of cell-population heterogeneity. A plausible implementation scenario of CRRC-based development, validation, and clinical use of a predictor of ovarian cancer chemoresistance to its frontline therapy is presented.
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Affiliation(s)
| | | | | | | | - Laurie E Ailles
- Department of Medical Biophysics , University of Toronto , Toronto , Ontario N5G 1L7 , Canada
| | - Geoffrey Liu
- Department of Medicine, Medical Oncology , Princess Margaret Cancer Centre , Toronto , Ontario M5G 2M9 , Canada
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23
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Crouch GM, Han D, Bohn PW. Zero-Mode Waveguide Nanophotonic Structures for Single Molecule Characterization. JOURNAL OF PHYSICS D: APPLIED PHYSICS 2018; 51:193001. [PMID: 34158676 PMCID: PMC8216246 DOI: 10.1088/1361-6463/aab8be] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Single-molecule characterization has become a crucial research tool in the chemical and life sciences, but limitations, such as limited concentration range, inability to control molecular distributions in space, and intrinsic phenomena, such as photobleaching, present significant challenges. Recent developments in non-classical optics and nanophotonics offer promising routes to mitigating these restrictions, such that even low affinity (K D ~ mM) biomolecular interactions can be studied. Here we introduce and review specific nanophotonic devices used to support single molecule studies. Optical nanostructures, such as zero-mode waveguides (ZMWs), are usually fabricated in thin gold or aluminum films and serve to confine the observation volume of optical microspectroscopy to attoliter to zeptoliter volumes. These simple nanostructures allow individual molecules to be isolated for optical and electrochemical analysis, even when the molecules of interest are present at high concentration (μM - mM) in bulk solution. Arrays of ZMWs may be combined with optical probes such as single molecule fluorescence, single molecule fluorescence resonance energy transfer (smFRET), and fluorescence correlation spectroscopy (FCS) for distributed analysis of large numbers of single-molecule reactions or binding events in parallel. Furthermore, ZMWs may be used as multifunctional devices, for example by combining optical and electrochemical functions in a single discrete architecture to achieve electrochemical ZMWs (E-ZMW). In this review, we will describe the optical properties, fabrication, and applications of ZMWs for single-molecule studies, as well as the integration of ZMWs into systems for chemical and biochemical analysis.
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Affiliation(s)
- Garrison M. Crouch
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN 46556
| | - Donghoon Han
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN 46556
| | - Paul W. Bohn
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN 46556
- Departmemt of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556
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24
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Wang L, Yan L, Liu J, Chen C, Zhao Y. Quantification of Nanomaterial/Nanomedicine Trafficking in Vivo. Anal Chem 2017; 90:589-614. [DOI: 10.1021/acs.analchem.7b04765] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Liming Wang
- CAS
Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety,
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Liang Yan
- CAS
Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety,
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Jing Liu
- The
College of Life Sciences, Northwest University, Xi’an, Shaanxi 710069, China
| | - Chunying Chen
- CAS
Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety,
CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Beijing 100190, China
| | - Yuliang Zhao
- CAS
Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety,
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
- CAS
Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety,
CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Beijing 100190, China
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