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Boateng D, Chu K, Smith ZJ, Du J, Dai Y. Deep learning-based size prediction for optical trapped nanoparticles and extracellular vesicles from limited bandwidth camera detection. BIOMEDICAL OPTICS EXPRESS 2024; 15:1-13. [PMID: 38223178 PMCID: PMC10783894 DOI: 10.1364/boe.501430] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 11/08/2023] [Accepted: 11/09/2023] [Indexed: 01/16/2024]
Abstract
Due to its ability to record position, intensity, and intensity distribution information, camera-based monitoring of nanoparticles in optical traps can enable multi-parametric morpho-optical characterization at the single-particle level. However, blurring due to the relatively long (10s of microsecond) integration times and aliasing from the resulting limited temporal bandwidth affect the detected particle position when considering nanoparticles in traps with strong stiffness, leading to inaccurate size predictions. Here, we propose a ResNet-based method for accurate size characterization of trapped nanoparticles, which is trained by considering only simulated time series data of nanoparticles' constrained Brownian motion. Experiments prove the method outperforms state-of-art sizing algorithms such as adjusted Lorentzian fitting or CNN-based networks on both standard nanoparticles and extracellular vesicles (EVs), as well as maintains good accuracy even when measurement times are relatively short (<1s per particle). On samples of clinical EVs, our network demonstrates a well-generalized ability to accurately determine the EV size distribution, as confirmed by comparison with gold-standard nanoparticle tracking analysis (NTA). Furthermore, by combining the sizing network with still frame images from high-speed video, the camera-based optical tweezers have the unique capacity to quantify both the size and refractive index of bio-nanoparticles at the single-particle level. These experiments prove the proposed sizing network as an ideal path for predicting the morphological heterogeneity of bio-nanoparticles in optical potential trapping-related measurements.
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Affiliation(s)
- Derrick Boateng
- National Engineering Research Center of Speech and Language Information Processing, Department of Electronic Engineering and Information Science, University of Science and Technology of China, China
| | - Kaiqin Chu
- Suzhou Institute for Advanced Research, University of Science and Technology of China, China
| | - Zachary J Smith
- Key Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes, Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, China
- Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, China
| | - Jun Du
- National Engineering Research Center of Speech and Language Information Processing, Department of Electronic Engineering and Information Science, University of Science and Technology of China, China
| | - Yichuan Dai
- Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, China
- Department of Advanced Manufacturing, Nanchang University, China
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2
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Wu J, Liu W, Ngai T. Total internal reflection microscopy: a powerful tool for exploring interactions and dynamics near interfaces. SOFT MATTER 2023. [PMID: 37314857 DOI: 10.1039/d3sm00085k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The occurrence of many micro/macrophenomena is closely related to interactions and dynamics near interfaces. Hence, developing powerful tools for characterizing near-interface interactions and dynamics has attached great importance among researchers. In this review, we introduce a noninvasive and ultrasensitive technique called total internal reflection microscopy (TIRM). The principles of TIRM are introduced first, demonstrating the characteristics of this technique. Then, typical measurements with TIRM and the recent development of the technique are reviewed in detail. At the end of the review, we highlight the great progress of TIRM during the past several decades and show its potential to be more influential in measuring interactions and dynamics near interfaces in various research fields.
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Affiliation(s)
- Jiahao Wu
- Department of Chemistry, The Chinese University of Hong Kong, N.T., Shatin, Hong Kong, China.
| | - Wei Liu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education & School of Chemical and Material Engineering, Jiangnan University, Wuxi, China.
| | - To Ngai
- Department of Chemistry, The Chinese University of Hong Kong, N.T., Shatin, Hong Kong, China.
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3
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Joseph TM, Kar Mahapatra D, Esmaeili A, Piszczyk Ł, Hasanin MS, Kattali M, Haponiuk J, Thomas S. Nanoparticles: Taking a Unique Position in Medicine. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13030574. [PMID: 36770535 PMCID: PMC9920911 DOI: 10.3390/nano13030574] [Citation(s) in RCA: 41] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/19/2023] [Accepted: 01/27/2023] [Indexed: 06/01/2023]
Abstract
The human nature of curiosity, wonder, and ingenuity date back to the age of humankind. In parallel with our history of civilization, interest in scientific approaches to unravel mechanisms underlying natural phenomena has been developing. Recent years have witnessed unprecedented growth in research in the area of pharmaceuticals and medicine. The optimism that nanotechnology (NT) applied to medicine and drugs is taking serious steps to bring about significant advances in diagnosing, treating, and preventing disease-a shift from fantasy to reality. The growing interest in the future medical applications of NT leads to the emergence of a new field for nanomaterials (NMs) and biomedicine. In recent years, NMs have emerged as essential game players in modern medicine, with clinical applications ranging from contrast agents in imaging to carriers for drug and gene delivery into tumors. Indeed, there are instances where nanoparticles (NPs) enable analyses and therapies that cannot be performed otherwise. However, NPs also bring unique environmental and societal challenges, particularly concerning toxicity. Thus, clinical applications of NPs should be revisited, and a deep understanding of the effects of NPs from the pathophysiologic basis of a disease may bring more sophisticated diagnostic opportunities and yield more effective therapies and preventive features. Correspondingly, this review highlights the significant contributions of NPs to modern medicine and drug delivery systems. This study also attempted to glimpse the future impact of NT in medicine and pharmaceuticals.
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Affiliation(s)
- Tomy Muringayil Joseph
- Department of Polymer Technology, Faculty of Chemistry, Gdańsk University of Technology, G. Narutowicza, 80-233 Gdańsk, Poland
| | - Debarshi Kar Mahapatra
- Department of Pharmaceutical Chemistry, Dadasaheb Balpande College of Pharmacy, Nagpur 440037, India
| | - Amin Esmaeili
- Department of Chemical Engineering, School of Engineering Technology and Industrial Trades, University of Doha for Science and Technology (UDST), Arab League St, Doha P.O. Box 24449, Qatar
| | - Łukasz Piszczyk
- Department of Polymer Technology, Faculty of Chemistry, Gdańsk University of Technology, G. Narutowicza, 80-233 Gdańsk, Poland
| | - Mohamed S. Hasanin
- Cellulose and Paper Department, National Research Centre, Cairo 12622, Egypt
| | - Mashhoor Kattali
- Department of Biotechnology, EMEA College of Arts and Science, Kondotty 673638, India
| | - Józef Haponiuk
- Department of Polymer Technology, Faculty of Chemistry, Gdańsk University of Technology, G. Narutowicza, 80-233 Gdańsk, Poland
| | - Sabu Thomas
- International and Inter-University Centre for Nanoscience and Nanotechnology, Mahatma Gandhi University, Kottayam 686560, India
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Faria SP, Carpinteiro C, Pinto V, Rodrigues SM, Alves J, Marques F, Lourenço M, Santos PH, Ramos A, Cardoso MJ, Guimarães JT, Rocha S, Sampaio P, Clifton DA, Mumtaz M, Paiva JS. Forecasting COVID-19 Severity by Intelligent Optical Fingerprinting of Blood Samples. Diagnostics (Basel) 2021; 11:diagnostics11081309. [PMID: 34441244 PMCID: PMC8392709 DOI: 10.3390/diagnostics11081309] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 07/14/2021] [Accepted: 07/19/2021] [Indexed: 01/08/2023] Open
Abstract
Forecasting COVID-19 disease severity is key to supporting clinical decision making and assisting resource allocation, particularly in intensive care units (ICUs). Here, we investigated the utility of time- and frequency-related features of the backscattered signal of serum patient samples to predict COVID-19 disease severity immediately after diagnosis. ICU admission was the primary outcome used to define disease severity. We developed a stacking ensemble machine learning model including the backscattered signal features (optical fingerprint), patient comorbidities, and age (AUROC = 0.80), which significantly outperformed the predictive value of clinical and laboratory variables available at hospital admission (AUROC = 0.71). The information derived from patient optical fingerprints was not strongly correlated with any clinical/laboratory variable, suggesting that optical fingerprinting brings unique information for COVID-19 severity risk assessment. Optical fingerprinting is a label-free, real-time, and low-cost technology that can be easily integrated as a front-line tool to facilitate the triage and clinical management of COVID-19 patients.
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Affiliation(s)
- Simão P. Faria
- iLoF—Intelligent Lab on Fiber, Limited, Oxford OX1 2EW, UK; (S.P.F.); (C.C.); (V.P.); (S.M.R.); (J.A.); (F.M.); (M.L.); (P.H.S.); (S.R.); (P.S.); (M.M.)
- Departamento de Bioquímica, Faculdade de Medicina da Universidade do Porto, 4200-319 Porto, Portugal;
| | - Cristiana Carpinteiro
- iLoF—Intelligent Lab on Fiber, Limited, Oxford OX1 2EW, UK; (S.P.F.); (C.C.); (V.P.); (S.M.R.); (J.A.); (F.M.); (M.L.); (P.H.S.); (S.R.); (P.S.); (M.M.)
- Departamento de Bioquímica, Faculdade de Medicina da Universidade do Porto, 4200-319 Porto, Portugal;
| | - Vanessa Pinto
- iLoF—Intelligent Lab on Fiber, Limited, Oxford OX1 2EW, UK; (S.P.F.); (C.C.); (V.P.); (S.M.R.); (J.A.); (F.M.); (M.L.); (P.H.S.); (S.R.); (P.S.); (M.M.)
- Departamento de Bioquímica, Faculdade de Medicina da Universidade do Porto, 4200-319 Porto, Portugal;
| | - Sandra M. Rodrigues
- iLoF—Intelligent Lab on Fiber, Limited, Oxford OX1 2EW, UK; (S.P.F.); (C.C.); (V.P.); (S.M.R.); (J.A.); (F.M.); (M.L.); (P.H.S.); (S.R.); (P.S.); (M.M.)
- Departamento de Bioquímica, Faculdade de Medicina da Universidade do Porto, 4200-319 Porto, Portugal;
| | - José Alves
- iLoF—Intelligent Lab on Fiber, Limited, Oxford OX1 2EW, UK; (S.P.F.); (C.C.); (V.P.); (S.M.R.); (J.A.); (F.M.); (M.L.); (P.H.S.); (S.R.); (P.S.); (M.M.)
- Departamento de Bioquímica, Faculdade de Medicina da Universidade do Porto, 4200-319 Porto, Portugal;
| | - Filipe Marques
- iLoF—Intelligent Lab on Fiber, Limited, Oxford OX1 2EW, UK; (S.P.F.); (C.C.); (V.P.); (S.M.R.); (J.A.); (F.M.); (M.L.); (P.H.S.); (S.R.); (P.S.); (M.M.)
- Departamento de Bioquímica, Faculdade de Medicina da Universidade do Porto, 4200-319 Porto, Portugal;
| | - Marta Lourenço
- iLoF—Intelligent Lab on Fiber, Limited, Oxford OX1 2EW, UK; (S.P.F.); (C.C.); (V.P.); (S.M.R.); (J.A.); (F.M.); (M.L.); (P.H.S.); (S.R.); (P.S.); (M.M.)
- Departamento de Bioquímica, Faculdade de Medicina da Universidade do Porto, 4200-319 Porto, Portugal;
| | - Paulo H. Santos
- iLoF—Intelligent Lab on Fiber, Limited, Oxford OX1 2EW, UK; (S.P.F.); (C.C.); (V.P.); (S.M.R.); (J.A.); (F.M.); (M.L.); (P.H.S.); (S.R.); (P.S.); (M.M.)
- Departamento de Bioquímica, Faculdade de Medicina da Universidade do Porto, 4200-319 Porto, Portugal;
| | - Angélica Ramos
- Serviço de Patologia Clínica, Centro Hospitalar Universitário de São João, 4200-319 Porto, Portugal; (A.R.); (M.J.C.)
- EPIUnit—Instituto de Saúde Pública da Universidade do Porto, 4050-600 Porto, Portugal
| | - Maria J. Cardoso
- Serviço de Patologia Clínica, Centro Hospitalar Universitário de São João, 4200-319 Porto, Portugal; (A.R.); (M.J.C.)
- EPIUnit—Instituto de Saúde Pública da Universidade do Porto, 4050-600 Porto, Portugal
| | - João T. Guimarães
- Departamento de Bioquímica, Faculdade de Medicina da Universidade do Porto, 4200-319 Porto, Portugal;
- Serviço de Patologia Clínica, Centro Hospitalar Universitário de São João, 4200-319 Porto, Portugal; (A.R.); (M.J.C.)
- EPIUnit—Instituto de Saúde Pública da Universidade do Porto, 4050-600 Porto, Portugal
| | - Sara Rocha
- iLoF—Intelligent Lab on Fiber, Limited, Oxford OX1 2EW, UK; (S.P.F.); (C.C.); (V.P.); (S.M.R.); (J.A.); (F.M.); (M.L.); (P.H.S.); (S.R.); (P.S.); (M.M.)
- Departamento de Bioquímica, Faculdade de Medicina da Universidade do Porto, 4200-319 Porto, Portugal;
| | - Paula Sampaio
- iLoF—Intelligent Lab on Fiber, Limited, Oxford OX1 2EW, UK; (S.P.F.); (C.C.); (V.P.); (S.M.R.); (J.A.); (F.M.); (M.L.); (P.H.S.); (S.R.); (P.S.); (M.M.)
- Departamento de Bioquímica, Faculdade de Medicina da Universidade do Porto, 4200-319 Porto, Portugal;
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal
- IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal
| | - David A. Clifton
- Department of Engineering Science, Institute of Biomedical Engineering, University of Oxford, Oxford OX3 7DQ, UK;
| | - Mehak Mumtaz
- iLoF—Intelligent Lab on Fiber, Limited, Oxford OX1 2EW, UK; (S.P.F.); (C.C.); (V.P.); (S.M.R.); (J.A.); (F.M.); (M.L.); (P.H.S.); (S.R.); (P.S.); (M.M.)
- Departamento de Bioquímica, Faculdade de Medicina da Universidade do Porto, 4200-319 Porto, Portugal;
| | - Joana S. Paiva
- iLoF—Intelligent Lab on Fiber, Limited, Oxford OX1 2EW, UK; (S.P.F.); (C.C.); (V.P.); (S.M.R.); (J.A.); (F.M.); (M.L.); (P.H.S.); (S.R.); (P.S.); (M.M.)
- Departamento de Bioquímica, Faculdade de Medicina da Universidade do Porto, 4200-319 Porto, Portugal;
- Instituto de Ciências Biomédicas Abel Salazar, University of Porto, 4200-319 Porto, Portugal
- Correspondence:
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5
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Paiva JS, Jorge PAS, Ribeiro RSR, Balmaña M, Campos D, Mereiter S, Jin C, Karlsson NG, Sampaio P, Reis CA, Cunha JPS. iLoF: An intelligent Lab on Fiber Approach for Human Cancer Single-Cell Type Identification. Sci Rep 2020; 10:3171. [PMID: 32081911 PMCID: PMC7035380 DOI: 10.1038/s41598-020-59661-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 12/16/2019] [Indexed: 01/30/2023] Open
Abstract
With the advent of personalized medicine, there is a movement to develop "smaller" and "smarter" microdevices that are able to distinguish similar cancer subtypes. Tumor cells display major differences when compared to their natural counterparts, due to alterations in fundamental cellular processes such as glycosylation. Glycans are involved in tumor cell biology and they have been considered to be suitable cancer biomarkers. Thus, more selective cancer screening assays can be developed through the detection of specific altered glycans on the surface of circulating cancer cells. Currently, this is only possible through time-consuming assays. In this work, we propose the "intelligent" Lab on Fiber (iLoF) device, that has a high-resolution, and which is a fast and portable method for tumor single-cell type identification and isolation. We apply an Artificial Intelligence approach to the back-scattered signal arising from a trapped cell by a micro-lensed optical fiber. As a proof of concept, we show that iLoF is able to discriminate two human cancer cell models sharing the same genetic background but displaying a different surface glycosylation profile with an accuracy above 90% and a speed rate of 2.3 seconds. We envision the incorporation of the iLoF in an easy-to-operate microchip for cancer identification, which would allow further biological characterization of the captured circulating live cells.
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Affiliation(s)
- Joana S Paiva
- INESC TEC - INESC Technology and Science, Porto, Portugal
- Physics and Astronomy Department, Faculty of Sciences, University of Porto, Porto, Portugal
- Faculty of Engineering, University of Porto, Porto, Portugal
| | - Pedro A S Jorge
- INESC TEC - INESC Technology and Science, Porto, Portugal
- Physics and Astronomy Department, Faculty of Sciences, University of Porto, Porto, Portugal
| | - Rita S R Ribeiro
- INESC TEC - INESC Technology and Science, Porto, Portugal
- Faculty of Engineering, University of Porto, Porto, Portugal
- 4DCell, Paris, France
| | - Meritxell Balmaña
- i3s - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- IPATIMUP - Institute of Molecular Pathology and Immunology, University of Porto, Porto, Portugal
- IMBA, Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna BioCenter Campus, 1030, Vienna, Austria
| | - Diana Campos
- i3s - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- IPATIMUP - Institute of Molecular Pathology and Immunology, University of Porto, Porto, Portugal
| | - Stefan Mereiter
- Faculty of Engineering, University of Porto, Porto, Portugal
- i3s - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- IPATIMUP - Institute of Molecular Pathology and Immunology, University of Porto, Porto, Portugal
- IMBA, Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna BioCenter Campus, 1030, Vienna, Austria
| | - Chunsheng Jin
- Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Niclas G Karlsson
- Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Paula Sampaio
- i3s - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | - Celso A Reis
- i3s - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- IPATIMUP - Institute of Molecular Pathology and Immunology, University of Porto, Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar, University of Porto, Porto, Portugal
- Faculty of Medicine of the University of Porto, Porto, Portugal
| | - João P S Cunha
- INESC TEC - INESC Technology and Science, Porto, Portugal.
- Faculty of Engineering, University of Porto, Porto, Portugal.
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6
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Paiva JS, Jorge PAS, Ribeiro RSR, Sampaio P, Rosa CC, Cunha JPS. Optical fiber-based sensing method for nanoparticle detection through supervised back-scattering analysis: a potential contributor for biomedicine. Int J Nanomedicine 2019; 14:2349-2369. [PMID: 31040661 PMCID: PMC6452810 DOI: 10.2147/ijn.s174358] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Background In view of the growing importance of nanotechnologies, the detection/identification of nanoparticles type has been considered of utmost importance. Although the characterization of synthetic/organic nanoparticles is currently considered a priority (eg, drug delivery devices, nanotextiles, theranostic nanoparticles), there are many examples of “naturally” generated nanostructures – for example, extracellular vesicles (EVs), lipoproteins, and virus – that provide useful information about human physiology or clinical conditions. For example, the detection of tumor-related exosomes, a specific type of EVs, in circulating fluids has been contributing to the diagnosis of cancer in an early stage. However, scientists have struggled to find a simple, fast, and low-cost method to accurately detect/identify these nanoparticles, since the majority of them have diameters between 100 and 150 nm, thus being far below the diffraction limit. Methods This study investigated if, by projecting the information provided from short-term portions of the back-scattered laser light signal collected by a polymeric lensed optical fiber tip dipped into a solution of synthetic nanoparticles into a lower features dimensional space, a discriminant function is able to correctly detect the presence of 100 nm synthetic nanoparticles in distilled water, in different concentration values. Results and discussion This technique ensured an optimal performance (100% accuracy) in detecting nanoparticles for a concentration above or equal to 3.89 µg/mL (8.74E+10 particles/mL), and a performance of 90% for concentrations below this value and higher than 1.22E−03 µg/mL (2.74E+07 particles/mL), values that are compatible with human plasmatic levels of tumor-derived and other types of EVs, as well as lipoproteins currently used as potential biomarkers of cardiovascular diseases. Conclusion The proposed technique is able to detect synthetic nanoparticles whose dimensions are similar to EVs and other “clinically” relevant nanostructures, and in concentrations equivalent to the majority of cell-derived, platelet-derived EVs and lipoproteins physiological levels. This study can, therefore, provide valuable insights towards the future development of a device for EVs and other biological nanoparticles detection with innovative characteristics.
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Affiliation(s)
- Joana S Paiva
- INESC Technology and Science, Porto, Portugal, .,Physics and Astronomy Department, Faculty of Sciences, University of Porto, Porto, Portugal, .,Faculty of Engineering, University of Porto, Porto, Portugal,
| | - Pedro A S Jorge
- INESC Technology and Science, Porto, Portugal, .,Physics and Astronomy Department, Faculty of Sciences, University of Porto, Porto, Portugal,
| | | | - Paula Sampaio
- Institute for Molecular and Cell Biology, i3S - Institute for Innovation and Research in Health, Porto, Portugal
| | - Carla C Rosa
- INESC Technology and Science, Porto, Portugal, .,Physics and Astronomy Department, Faculty of Sciences, University of Porto, Porto, Portugal,
| | - João P S Cunha
- INESC Technology and Science, Porto, Portugal, .,Faculty of Engineering, University of Porto, Porto, Portugal,
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7
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Baker JE, Badman RP, Wang MD. Nanophotonic trapping: precise manipulation and measurement of biomolecular arrays. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2017; 10. [PMID: 28439980 DOI: 10.1002/wnan.1477] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Revised: 03/20/2017] [Accepted: 03/22/2017] [Indexed: 12/13/2022]
Abstract
Optical trapping is a powerful and widely used laboratory technique in the biological and materials sciences that enables rapid manipulation and measurement at the nanometer scale. However, expanding the analytical throughput of this technique beyond the serial capabilities of established single-trap microscope-based optical tweezers remains a current goal in the field. In recent years, advances in nanotechnology have been leveraged to create innovative optical trapping methods that increase the number of available optical traps and permit parallel manipulation and measurement of arrays of optically trapped targets. In particular, nanophotonic trapping holds significant promise for integration with other lab-on-a-chip technologies to yield compact, robust analytical devices. In this review, we highlight progress in nanophotonic manipulation and measurement, as well as the potential for implementing these on-chip functionalities in biological research and biomedical applications. WIREs Nanomed Nanobiotechnol 2018, 10:e1477. doi: 10.1002/wnan.1477 This article is categorized under: Nanotechnology Approaches to Biology > Nanoscale Systems in Biology.
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Affiliation(s)
- James E Baker
- Howard Hughes Medical Institute, Cornell University, Ithaca, NY, USA.,Department of Physics - LASSP, Cornell University, Ithaca, NY, USA
| | - Ryan P Badman
- Department of Physics - LASSP, Cornell University, Ithaca, NY, USA
| | - Michelle D Wang
- Howard Hughes Medical Institute, Cornell University, Ithaca, NY, USA.,Department of Physics - LASSP, Cornell University, Ithaca, NY, USA
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8
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Hristov DR, Ye D, de Araújo JM, Ashcroft C, DiPaolo B, Hart R, Earhart C, Lopez H, Dawson KA. Using single nanoparticle tracking obtained by nanophotonic force microscopy to simultaneously characterize nanoparticle size distribution and nanoparticle-surface interactions. NANOSCALE 2017; 9:4524-4535. [PMID: 28317988 DOI: 10.1039/c6nr09331k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Comprehensive characterization of nanomaterials for medical applications is a challenging and complex task due to the multitude of parameters which need to be taken into consideration in a broad range of conditions. Routine methods such as dynamic light scattering or nanoparticle tracking analysis provide some insight into the physicochemical properties of particle dispersions. For nanomedicine applications the information they supply can be of limited use. For this reason, there is a need for new methodologies and instruments that can provide additional data on nanoparticle properties such as their interactions with surfaces. Nanophotonic force microscopy has been shown as a viable method for measuring the force between surfaces and individual particles in the nano-size range. Here we outline a further application of this technique to measure the size of single particles and based on these measurement build the distribution of a sample. We demonstrate its efficacy by comparing the size distribution obtained with nanophotonic force microscopy to established instruments, such as dynamic light scattering and differential centrifugal sedimentation. Our results were in good agreement to those observed with all other instruments. Furthermore, we demonstrate that the methodology developed in this work can be used to study complex particle mixtures and the surface alteration of materials. For all cases studied, we were able to obtain both the size and the interaction potential of the particles with a surface in a single measurement.
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Affiliation(s)
- Delyan R Hristov
- Center for BioNano Interaction, School of Chemistry, University College Dublin, Belfield, Dublin, Ireland.
| | - Dong Ye
- Center for BioNano Interaction, School of Chemistry, University College Dublin, Belfield, Dublin, Ireland.
| | - Joao Medeiros de Araújo
- Center for BioNano Interaction, School of Chemistry, University College Dublin, Belfield, Dublin, Ireland. and Departamento de Física, Universidade Federal do Rio Grande do Norte, Natal-RN, Brazil
| | | | | | - Robert Hart
- Optofluidics, Inc., Philadelphia, PA 19104, USA
| | | | - Hender Lopez
- Center for BioNano Interaction, School of Chemistry, University College Dublin, Belfield, Dublin, Ireland.
| | - Kenneth A Dawson
- Center for BioNano Interaction, School of Chemistry, University College Dublin, Belfield, Dublin, Ireland.
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