1
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Jeong S, González G, Ho A, Nowell N, Austin LA, Hoballah J, Mubarak F, Kapur A, Patankar MS, Cramer DW, Krauledat P, Hansen WP, Evans CL. Plasmonic Nanoparticle-Based Digital Cytometry to Quantify MUC16 Binding on the Surface of Leukocytes in Ovarian Cancer. ACS Sens 2020; 5:2772-2782. [PMID: 32847358 PMCID: PMC7871419 DOI: 10.1021/acssensors.0c00567] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Although levels of the circulating ovarian cancer marker (CA125) can distinguish ovarian masses that are likely to be malignant and correlate with severity of disease, serum CA125 has not proved useful in general population screening. Recently, cell culture studies have indicated that MUC16 may bind to the Siglec-9 receptor on natural killer (NK) cells where it downregulates the cytotoxicity of NK cells, allowing ovarian cancer cells to evade immune surveillance. We present evidence that the presence of MUC16 can be locally visualized and imaged on the surface of peripheral blood mononuclear cells (PBMCs) in ovarian cancer via a novel "digital" cytometry technique that incorporates: (i) OC125 monoclonal antibody-conjugated gold nanoparticles as optical nanoprobes, (ii) a high contrast dark-field microscopy system to detect PBMC-bound gold nanoparticles, and (iii) a computational algorithm for automatic counting of these nanoparticles to estimate the quantity of surface-bound MUC16. The quantitative detection of our technique was successfully demonstrated by discriminating clones of the ovarian cancer cell line, OVCAR3, based on low, intermediate, and high expression levels of MUC16. Additionally, PBMC surface-bound MUC16 was tracked in an ovarian cancer patient over a 17 month period; the results suggest that the binding of MUC16 on the surface of immune cells may play an early indicator for recurrent metastasis 6 months before computational tomography-based clinical diagnosis. We also demonstrate that the levels of surface-bound MUC16 on PBMCs from five ovarian cancer patients were greater than those from five healthy controls.
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Affiliation(s)
- Sinyoung Jeong
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, United States
| | - Germán González
- PNP Research Corporation, LLC, Drury, Massachusetts 01343, United States
| | - Alexander Ho
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, United States
| | - Nicholas Nowell
- PNP Research Corporation, LLC, Drury, Massachusetts 01343, United States
| | - Lauren A Austin
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, United States
| | - Jawad Hoballah
- PNP Research Corporation, LLC, Drury, Massachusetts 01343, United States
| | - Fatima Mubarak
- PNP Research Corporation, LLC, Drury, Massachusetts 01343, United States
| | - Arvinder Kapur
- Department of Obstetrics and Gynecology, University of Wisconsin-Madison, Madison 53705, United States
| | - Manish S Patankar
- Department of Obstetrics and Gynecology, University of Wisconsin-Madison, Madison 53705, United States
| | - Daniel W Cramer
- Ob/Gyn Epidemiology Center, Brigham and Women's Hospital, Boston, Massachusetts 02115, United States
- Obstetrics, Gynecology and Reproductive Biology, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Petra Krauledat
- PNP Research Corporation, LLC, Drury, Massachusetts 01343, United States
| | - W Peter Hansen
- PNP Research Corporation, LLC, Drury, Massachusetts 01343, United States
| | - Conor L Evans
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, United States
- Ludwig Center at Harvard, Harvard Medical School, Boston, Massachusetts 02215, United States
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2
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Abstract
We present the development of an innovative technology for quantitative multiplexed cytology analysis based on the application of spectrally distinctive plasmonic nanoparticles (NPs) as optical probes and on cost-effective side-illumination multispectral darkfield microscopy (SIM) as the differential NP imaging method. SIM is based on lateral illumination by arrays of discrete color RGB light emitting diodes (LEDs) of spectrally adjusted plasmonic NPs and consecutive detection by the conventional CMOS color camera. We demonstrate the enhanced contrast and higher resolution of our method for individual NP detection in the liquid medium and of NP markers attached on the cell membrane in a cytology preparation by comparing it to the conventional darkfield microscopy (DFM). The proposed illumination and detection system is compatible with current clinical microscopy equipment used by pathologists and can greatly simplify the adaptation of plasmonic NPs as novel reliable and stable biological multiplexed chromatic markers for biodetection and diagnosis.
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Affiliation(s)
- Mengjiao Qi
- Engineering Physics Department, Ecole Polytechnique de Montréal, Laser Processing and Plasmonics Laboratory, Montréal, Québec H3C 3A7, Canada.
| | - Cecile Darviot
- Engineering Physics Department, Ecole Polytechnique de Montréal, Laser Processing and Plasmonics Laboratory, Montréal, Québec H3C 3A7, Canada.
| | - Sergiy Patskovsky
- Engineering Physics Department, Ecole Polytechnique de Montréal, Laser Processing and Plasmonics Laboratory, Montréal, Québec H3C 3A7, Canada.
| | - Michel Meunier
- Engineering Physics Department, Ecole Polytechnique de Montréal, Laser Processing and Plasmonics Laboratory, Montréal, Québec H3C 3A7, Canada.
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3
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Czerski J, Colomb W, Cannataro F, Sarkar SK. Spectroscopic identification of individual fluorophores using photoluminescence excitation spectra. J Microsc 2018; 270:261-271. [PMID: 29369365 DOI: 10.1111/jmi.12679] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 11/25/2017] [Accepted: 12/17/2017] [Indexed: 01/30/2023]
Abstract
The identity of a fluorophore can be ambiguous if other fluorophores or nonspecific fluorescent impurities have overlapping emission spectra. The presence of overlapping spectra makes it difficult to differentiate fluorescent species using discrete detection channels and unmixing of spectra. The unique absorption and emission signatures of fluorophores provide an opportunity for spectroscopic identification. However, absorption spectroscopy may be affected by scattering, whereas fluorescence emission spectroscopy suffers from signal loss by gratings or other dispersive optics. Photoluminescence excitation spectra, where excitation is varied and emission is detected at a fixed wavelength, allows hyperspectral imaging with a single emission filter for high signal-to-background ratio without any moving optics on the emission side. We report a high throughput method for measuring the photoluminescence excitation spectra of individual fluorophores using a tunable supercontinuum laser and prism-type total internal reflection fluorescence microscope. We used the system to measure and sort the photoluminescence excitation spectra of individual Alexa dyes, fluorescent nanodiamonds (FNDs), and fluorescent polystyrene beads. We used a Gaussian mixture model with maximum likelihood estimation to objectively separate the spectra. Finally, we spectroscopically identified different species of fluorescent nanodiamonds with overlapping spectra and characterized the heterogeneity of fluorescent nanodiamonds of varying size.
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Affiliation(s)
- J Czerski
- Department of Physics, Colorado School of Mines, Colorado, U.S.A
| | - W Colomb
- Department of Physics, Colorado School of Mines, Colorado, U.S.A
| | - F Cannataro
- Department of Physics, Colorado School of Mines, Colorado, U.S.A
| | - S K Sarkar
- Department of Physics, Colorado School of Mines, Colorado, U.S.A
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4
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Ilovitsh A, Polak P, Zalevsky Z, Shefi O. Selective inactivation of enzymes conjugated to nanoparticles using tuned laser illumination. Cytometry A 2016; 91:767-774. [DOI: 10.1002/cyto.a.23005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 05/30/2016] [Accepted: 10/05/2016] [Indexed: 12/28/2022]
Affiliation(s)
- Asaf Ilovitsh
- Faculty of Engineering; Bar Ilan University; Ramat-Gan 5290002 Israel
- The Bar-Ilan Institute of Nanotechnologies & Advanced Materials, Bar Ilan University; Ramat-Gan 5290002 Israel
| | - Pazit Polak
- Faculty of Engineering; Bar Ilan University; Ramat-Gan 5290002 Israel
- The Bar-Ilan Institute of Nanotechnologies & Advanced Materials, Bar Ilan University; Ramat-Gan 5290002 Israel
| | - Zeev Zalevsky
- Faculty of Engineering; Bar Ilan University; Ramat-Gan 5290002 Israel
- The Bar-Ilan Institute of Nanotechnologies & Advanced Materials, Bar Ilan University; Ramat-Gan 5290002 Israel
| | - Orit Shefi
- Faculty of Engineering; Bar Ilan University; Ramat-Gan 5290002 Israel
- The Bar-Ilan Institute of Nanotechnologies & Advanced Materials, Bar Ilan University; Ramat-Gan 5290002 Israel
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5
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Ilovitsh T, Zalevsky Z. Temporal flickering of contrast agents for enhanced optical imaging. Wiley Interdiscip Rev Nanomed Nanobiotechnol 2016; 8:439-448. [PMID: 26371615 DOI: 10.1002/wnan.1375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2015] [Revised: 07/27/2015] [Accepted: 08/12/2015] [Indexed: 06/05/2023]
Abstract
The temporal flickering of contrast agents that labels a biological sample is a unique modality for cellular imaging with single molecule sensitivity. It improves the signal-to-noise ratio statistics associated with the noisy in vivo environment and has promising applications in single particle tracking and super-resolution microscopy techniques. The flickering can be triggered either statistically through the mechanism of temporal fluctuations of the emitter or through external modulation. The enriching toolbox of contrast agents that are feasible for biomedical imaging for the flickering methods will be discussed, with emphasis on the emerging field of flickering gold nanoparticles and the lock-in detection mechanism. WIREs Nanomed Nanobiotechnol 2016, 8:439-448. doi: 10.1002/wnan.1375 For further resources related to this article, please visit the WIREs website.
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Affiliation(s)
- Tali Ilovitsh
- Faculty of Engineering, Bar Ilan University, Ramat-Gan, Israel
| | - Zeev Zalevsky
- Faculty of Engineering, Bar Ilan University, Ramat-Gan, Israel
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6
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da Silva Pereira B, Silva MF, Bittencourt PRS, de Oliveira DMF, Pineda EAG, Hechenleitner AAW. Cellophane and filter paper as cellulosic support for silver nanoparticles and its thermal decomposition catalysis. Carbohydr Polym 2015; 133:277-83. [DOI: 10.1016/j.carbpol.2015.06.108] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Revised: 06/24/2015] [Accepted: 06/29/2015] [Indexed: 01/16/2023]
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7
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Ilovitsh T, Ilovitsh A, Weiss A, Meir R, Zalevsky Z. Three dimensional imaging of gold-nanoparticles tagged samples using phase retrieval with two focus planes. Sci Rep 2015; 5:15473. [PMID: 26498517 PMCID: PMC4620448 DOI: 10.1038/srep15473] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 09/24/2015] [Indexed: 01/17/2023] Open
Abstract
Optical sectioning microscopy can provide highly detailed three dimensional (3D) images of biological samples. However, it requires acquisition of many images per volume, and is therefore time consuming, and may not be suitable for live cell 3D imaging. We propose the use of the modified Gerchberg-Saxton phase retrieval algorithm to enable full 3D imaging of gold-particle tagged samples using only two images. The reconstructed field is free space propagated to all other focus planes using post processing, and the 2D z-stack is merged to create a 3D image of the sample with high fidelity. Because we propose to apply the phase retrieving on nano particles, the regular ambiguities typical to the Gerchberg-Saxton algorithm, are eliminated. The proposed concept is presented and validated both on simulated data as well as experimentally.
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Affiliation(s)
- Tali Ilovitsh
- Faculty of Engineering, Bar Ilan University, Ramat-Gan 5290002, Israel
- The Bar-Ilan Institute of Nanotechnology & Advanced Materials, Bar Ilan University, Ramat-Gan 5290002, Israel
| | - Asaf Ilovitsh
- Faculty of Engineering, Bar Ilan University, Ramat-Gan 5290002, Israel
- The Bar-Ilan Institute of Nanotechnology & Advanced Materials, Bar Ilan University, Ramat-Gan 5290002, Israel
| | - Aryeh Weiss
- Faculty of Engineering, Bar Ilan University, Ramat-Gan 5290002, Israel
- The Bar-Ilan Institute of Nanotechnology & Advanced Materials, Bar Ilan University, Ramat-Gan 5290002, Israel
| | - Rinat Meir
- Faculty of Engineering, Bar Ilan University, Ramat-Gan 5290002, Israel
| | - Zeev Zalevsky
- Faculty of Engineering, Bar Ilan University, Ramat-Gan 5290002, Israel
- The Bar-Ilan Institute of Nanotechnology & Advanced Materials, Bar Ilan University, Ramat-Gan 5290002, Israel
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8
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Malysheva A, Lombi E, Voelcker NH. Bridging the divide between human and environmental nanotoxicology. Nat Nanotechnol 2015; 10:835-44. [PMID: 26440721 DOI: 10.1038/nnano.2015.224] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Accepted: 08/28/2015] [Indexed: 05/17/2023]
Abstract
The need to assess the human and environmental risks of nanoscale materials has prompted the development of new metrological tools for their detection, quantification and characterization. Some of these methods have tremendous potential for use in various scenarios of nanotoxicology. However, in some cases, the limited dialogue between environmental scientists and human toxicologists has hampered the full exploitation of these resources. Here we review recent progress in the development of methods for nanomaterial analysis and discuss the use of these methods in environmental and human toxicology. We highlight the opportunities for collaboration between these two research areas.
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Affiliation(s)
- Anzhela Malysheva
- Centre for Environmental Risk Assessment and Remediation, University of South Australia, Mawson Lakes, South Australia 5095, Australia
| | - Enzo Lombi
- Centre for Environmental Risk Assessment and Remediation, University of South Australia, Mawson Lakes, South Australia 5095, Australia
| | - Nicolas H Voelcker
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Mawson Institute, University of South Australia, Mawson Lakes, South Australia 5095, Australia
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9
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Polak P, Shefi O. Nanometric agents in the service of neuroscience: Manipulation of neuronal growth and activity using nanoparticles. Nanomedicine: Nanotechnology, Biology and Medicine 2015; 11:1467-79. [DOI: 10.1016/j.nano.2015.03.005] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Revised: 03/05/2015] [Accepted: 03/15/2015] [Indexed: 11/29/2022]
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10
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Ilovitsh T, Danan Y, Meir R, Meiri A, Zalevsky Z. Cellular superresolved imaging of multiple markers using temporally flickering nanoparticles. Sci Rep 2015; 5:10965. [PMID: 26020693 PMCID: PMC4447069 DOI: 10.1038/srep10965] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Accepted: 05/11/2015] [Indexed: 11/09/2022] Open
Abstract
In this paper we present a technique aimed for simultaneous detection of multiple types of gold nanoparticles (GNPs) within a biological sample, using lock-in detection. We image the sample using a number of modulated laser beams that correspond to the number of GNP species that label a given sample. The final image where the GNPs are spatially separated is obtained computationally. The proposed method enables the simultaneous superresolved imaging of different areas of interest within biological sample and also the spatial separation of GNPs at sub-diffraction distances, making it a useful tool in the study of intracellular trafficking pathways in living cells.
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Affiliation(s)
- Tali Ilovitsh
- Faculty of Engineering, Bar Ilan University, Ramat-Gan 5290002, Israel
- The Bar-Ilan Institute of Nanotechnology & Advanced Materials, Bar Ilan University, Ramat-Gan 5290002, Israel
| | - Yossef Danan
- Faculty of Engineering, Bar Ilan University, Ramat-Gan 5290002, Israel
- The Bar-Ilan Institute of Nanotechnology & Advanced Materials, Bar Ilan University, Ramat-Gan 5290002, Israel
| | - Rinat Meir
- Faculty of Engineering, Bar Ilan University, Ramat-Gan 5290002, Israel
- The Bar-Ilan Institute of Nanotechnology & Advanced Materials, Bar Ilan University, Ramat-Gan 5290002, Israel
| | - Amihai Meiri
- Department of Electrical and Computer Engineering, University of Utah, Salt Lake City, Utah, USA
| | - Zeev Zalevsky
- Faculty of Engineering, Bar Ilan University, Ramat-Gan 5290002, Israel
- The Bar-Ilan Institute of Nanotechnology & Advanced Materials, Bar Ilan University, Ramat-Gan 5290002, Israel
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11
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Paviolo C, Chon JWM, Clayton AHA. Inhibiting EGFR clustering and cell proliferation with gold nanoparticles. Small 2015; 11:1638-43. [PMID: 25504553 DOI: 10.1002/smll.201402701] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2014] [Revised: 10/17/2014] [Indexed: 05/27/2023]
Abstract
Gold nanoparticles are functionalized with epidermal growth factor (EGF) molecules and incubated with HeLa cells. These new complexes mechanically interfere with the activation of EGF receptors in a length-dependent manner. Protein-functionalized gold nanoparticles hold great potential for unveiling the fundamental characteristics of cell receptors and for future pharmacological studies on receptor targeting.
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Affiliation(s)
- Chiara Paviolo
- Centre for Micro-Photonics, Faculty of Engineering, Science and Technology, Swinburne University of Technology, Hawthorn, PO Box 218, Victoria, 3122, Australia
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12
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Ilovitsh T, Danan Y, Ilovitsh A, Meiri A, Meir R, Zalevsky Z. Superresolved labeling nanoscopy based on temporally flickering nanoparticles and the K-factor image deshadowing. Biomed Opt Express 2015; 6:1262-1272. [PMID: 25909010 PMCID: PMC4399665 DOI: 10.1364/boe.6.001262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Revised: 02/23/2015] [Accepted: 02/23/2015] [Indexed: 06/04/2023]
Abstract
Localization microscopy provides valuable insights into cellular structures and is a rapidly developing field. The precision is mainly limited by additive noise and the requirement for single molecule imaging that dictates a low density of activated emitters in the field of view. In this paper we present a technique aimed for noise reduction and improved localization accuracy. The method has two steps; the first is the imaging of gold nanoparticles that labels targets of interest inside biological cells using a lock-in technique that enables the separation of the signal from the wide spread spectral noise. The second step is the application of the K-factor nonlinear image decomposition algorithm on the obtained image, which improves the localization accuracy that can reach 5nm and enables the localization of overlapping particles at minimal distances that are closer by 65% than conventional methods.
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Affiliation(s)
- Tali Ilovitsh
- Faculty of Engineering, Bar Ilan University, Ramat-Gan 5290002,
Israel
| | - Yossef Danan
- Faculty of Engineering, Bar Ilan University, Ramat-Gan 5290002,
Israel
| | - Asaf Ilovitsh
- Faculty of Engineering, Bar Ilan University, Ramat-Gan 5290002,
Israel
| | - Amihai Meiri
- Department of Electrical and Computer Engineering, University of Utah, Salt Lake City, Utah,
USA
| | - Rinat Meir
- Faculty of Engineering, Bar Ilan University, Ramat-Gan 5290002,
Israel
| | - Zeev Zalevsky
- Faculty of Engineering, Bar Ilan University, Ramat-Gan 5290002,
Israel
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13
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Abstract
Utilizing the surface plasmon resonance effect in gold nanoparticles enables their use as contrast agents in a variety of applications for compound cellular imaging. However, most techniques suffer from poor signal to noise ratio (SNR) statistics due to high shot noise that is associated with low photon count in addition to high background noise. We demonstrate an effective way to improve the SNR, in particular when the inspected signal is indistinguishable in the given noisy environment. We excite the temporal flickering of the scattered light from gold nanoparticle that labels a biological sample. By preforming temporal spectral analysis of the received spatial image and by inspecting the proper spectral component corresponding to the modulation frequency, we separate the signal from the wide spread spectral noise (lock-in amplification).
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Affiliation(s)
- Tali Ilovitsh
- Faculty of Engineering, Bar Ilan University, Ramat-Gan 5290002, Israel
- The Bar-Ilan Institute of Nanotechnology & Advanced Materials, Bar Ilan University, Ramat-Gan 5290002, Israel
| | - Yossef Danan
- Faculty of Engineering, Bar Ilan University, Ramat-Gan 5290002, Israel
- The Bar-Ilan Institute of Nanotechnology & Advanced Materials, Bar Ilan University, Ramat-Gan 5290002, Israel
| | - Rinat Meir
- Faculty of Engineering, Bar Ilan University, Ramat-Gan 5290002, Israel
- The Bar-Ilan Institute of Nanotechnology & Advanced Materials, Bar Ilan University, Ramat-Gan 5290002, Israel
| | - Amihai Meiri
- Department of Electrical and Computer Engineering, University of Utah, Salt Lake City, Utah, USA
| | - Zeev Zalevsky
- Faculty of Engineering, Bar Ilan University, Ramat-Gan 5290002, Israel
- The Bar-Ilan Institute of Nanotechnology & Advanced Materials, Bar Ilan University, Ramat-Gan 5290002, Israel
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14
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Eldridge WJ, Meiri A, Sheinfeld A, Rinehart MT, Wax A. Fast wide-field photothermal and quantitative phase cell imaging with optical lock-in detection. Biomed Opt Express 2014; 5:2517-25. [PMID: 25136482 PMCID: PMC4132985 DOI: 10.1364/boe.5.002517] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Revised: 06/05/2014] [Accepted: 06/24/2014] [Indexed: 05/13/2023]
Abstract
We present a fast, wide-field holography system for detecting photothermally excited gold nanospheres with combined quantitative phase imaging. An interferometric photothermal optical lock-in approach (POLI) is shown to improve SNR for detecting nanoparticles (NPs) on multiple substrates, including a monolayer of NPs on a silanized coverslip, and NPs bound to live cells. Furthermore, the set up allowed for co-registered quantitative phase imaging (QPI) to be acquired in an off-axis holographic set-up. An SNR of 103 was obtained for NP-tagging of epidermal growth factor receptor (EGFR) in live cells with a 3 second acquisition, while an SNR of 47 was seen for 20 ms acquisition. An analysis of improvements in SNR due to averaging multiple frames is presented, which suggest that residual photothermal signal can be a limiting factor. The combination of techniques allows for high resolution imaging of cell structure via QPI with the ability to identify receptor expression via POLI.
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Affiliation(s)
- Will J. Eldridge
- Department of Biomedical Engineering and Fitzpatrick Institute for Photonics, Duke University, Durham NC 27708, USA
- contributed equally
| | - Amihai Meiri
- Department of Biomedical Engineering and Fitzpatrick Institute for Photonics, Duke University, Durham NC 27708, USA
- contributed equally
| | - Adi Sheinfeld
- Department of Biomedical Engineering and Fitzpatrick Institute for Photonics, Duke University, Durham NC 27708, USA
| | - Matthew T. Rinehart
- Department of Biomedical Engineering and Fitzpatrick Institute for Photonics, Duke University, Durham NC 27708, USA
| | - Adam Wax
- Department of Biomedical Engineering and Fitzpatrick Institute for Photonics, Duke University, Durham NC 27708, USA
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15
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Seekell K, Lewis S, Wilson C, Li S, Grant G, Wax A. Feasibility study of brain tumor delineation using immunolabeled gold nanorods. Biomed Opt Express 2013; 4:2284-95. [PMID: 24298394 PMCID: PMC3829528 DOI: 10.1364/boe.4.002284] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 09/20/2013] [Accepted: 09/24/2013] [Indexed: 05/25/2023]
Abstract
Effective treatment of patients with malignant brain tumors requires surgical resection of a high percentage of the bulk tumor. Surgeons require a method that enables delineation of tumor margins, which are not visually distinct by eye. In this study, the feasibility of using gold nanorods (GNRs) for this purpose is evaluated. Anti-Epidermal Growth Factor Receptor (anti-EGFR) conjugated GNRs are used to label human xenograft glioblastoma multiforme (GBM) tumors embedded within slices of brain tissues from healthy nude mice. The anti-EGFR GNRs exhibit enhanced absorption at red to near-infrared wavelengths, often referred to as the tissue optical window, where absorption from blood is minimal. To enable definition of molecular specificity and spatial accuracy of the label, the GNR absorption is compared with GFP fluorescence which is expressed by the GBM cells used here. This work demonstrates a simple but highly translational technique to classify normal and malignant brain tissue regions in open surgery applications using immunolabeled GNR contrast agents.
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Affiliation(s)
- Kevin Seekell
- Department of Biomedical Engineering, Duke University, Durham, NC 27708, USA
| | - Spencer Lewis
- Department of Biomedical Engineering, Duke University, Durham, NC 27708, USA
| | - Christy Wilson
- Department of Neurosurgery, Pediatric Division, Duke University Medical Center, Durham, NC. 27708, USA
| | - Shuqin Li
- Department of Neurosurgery, Pediatric Division, Duke University Medical Center, Durham, NC. 27708, USA
| | - Gerald Grant
- Department of Neurosurgery, Pediatric Division, Duke University Medical Center, Durham, NC. 27708, USA
| | - Adam Wax
- Department of Biomedical Engineering, Duke University, Durham, NC 27708, USA
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16
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Wax A, Meiri A, Arumugam S, Rinehart MT. Comparative review of interferometric detection of plasmonic nanoparticles. Biomed Opt Express 2013; 4:2166-78. [PMID: 24156072 PMCID: PMC3799674 DOI: 10.1364/boe.4.002166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 09/04/2013] [Accepted: 09/05/2013] [Indexed: 05/26/2023]
Abstract
Noble metal nanoparticles exhibit enhanced scattering and absorption at specific wavelengths due to a localized surface plamson resonance. This unique property can be exploited to enable the use of plasmonic nanoparticles as contrast agents in optical imaging. A range of optical techniques have been developed to detect nanoparticles in order to implement imaging schemes. Here we review several different approaches for using optical interferometry to detect the presence and concentration of nanoparticles. The strengths and weaknesses of the various approaches are discussed and quantitative comparisons of the achievable signal to noise ratios are presented. The benefits of each approach are outlined as they relate to specific application goals.
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17
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Zucker RM, Daniel KM, Massaro EJ, Karafas SJ, Degn LL, Boyes WK. Detection of silver nanoparticles in cells by flow cytometry using light scatter and far-red fluorescence. Cytometry A 2013; 83:962-72. [PMID: 23943267 DOI: 10.1002/cyto.a.22342] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2012] [Revised: 06/18/2013] [Accepted: 06/28/2013] [Indexed: 01/12/2023]
Abstract
The cellular uptake of different sized silver nanoparticles (AgNP) (10, 50, and 75 nm) coated with polyvinylpyrrolidone (PVP) or citrate on a human derived retinal pigment epithelial cell line (ARPE-19) was detected by flow cytometry following 24-h incubation of the cells with AgNP. A dose dependent increase of side scatter and far red fluorescence was observed with both PVP and citrate-coated 50 nm or 75 nm silver particles. Using five different flow cytometers, a far red fluorescence signal in the 700-800 nm range increased as much as 100 times background as a ratio comparing the intensity measurements of treated sample and controls. The citrate-coated silver nanoparticles (AgNP) revealed slightly more side scatter and far red fluorescence than did the PVP coated silver nanoparticles. This increased far red fluorescence signal was observed with 50 and 75 nm particles, but not with 10 nm particles. Morphological evaluation by dark field microscopy showed silver particles (50 and 75 nm) clumped and concentrated around the nucleus. One possible hypothesis to explain the emission of far red fluorescence from cells incubated with silver nanoparticles is that the silver nanoparticles inside cells agglomerate into small nano clusters that form surface plasmon resonance which interacts with laser light to emit a strong far red fluorescence signal. The results demonstrate that two different parameters (side scatter and far red fluorescence) on standard flow cytometers can be used to detect and observe metallic nanoparticles inside cells. The strength of the far red fluorescence suggests that it may be particularly useful for applications that require high sensitivity. © Published 2013 Wiley-Periodicals, Inc.
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Affiliation(s)
- R M Zucker
- U.S. Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Research Laboratory, Toxicology Assessment Division (MD-67), Research Triangle Park, NC 27711
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18
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Paviolo C, Haycock JW, Yong J, Yu A, Stoddart PR, McArthur SL. Laser exposure of gold nanorods can increase neuronal cell outgrowth. Biotechnol Bioeng 2013; 110:2277-91. [PMID: 23456616 DOI: 10.1002/bit.24889] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2012] [Revised: 02/18/2013] [Accepted: 02/20/2013] [Indexed: 01/27/2023]
Abstract
The usage of gold nanoparticles (Au NPs) in biological applications has risen significantly over the last 10 years. With the wide variety of chemical and biological functionalization available and their distinctive optical properties, Au NPs are currently used in a range of biological applications including sensing, labeling, drug delivery, and imaging applications. Among the available particles, gold nanorods (Au NRs) are particularly useful because their optical absorption can be tuned across the visible to near infrared region. Here, we present a novel application of Au NRs associated with low power laser exposure of NG108-15 neuronal cells. When cells were irradiated with a 780 nm laser, the average number of neurons with neurites increased. A similar stimulatory effect was observed for cells that were cultured with poly-(4-styrenesulfonic acid)-coated and silica-coated Au NRs. Furthermore, when the NG108-15 cells were cultured with both bare and coated Au NRs and then irradiated with 1.2-7.5 W/cm(2) at 780 nm, they showed a neurite length increase of up to 25 µm versus control. To the best of our knowledge, this effect has never been reported before. While the pathways of the stimulation is not yet clear, the data presented here demonstrates that it is linked to the absorption of light by the Au NRs. These initial results open up new opportunities for peripheral nerve regeneration treatments and for novel approaches to addressing central nervous system axons following spinal cord injury.
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Affiliation(s)
- Chiara Paviolo
- Biotactical Engineering, Industrial Research Institute Swinburne (IRIS), Faculty of Engineering and Industrial Science, Swinburne University of Technology, PO Box 218, Hawthorn, Victoria 3122, Australia
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Li YL, Seekell K, Yuan H, Robles FE, Wax A. Multispectral nanoparticle contrast agents for true-color spectroscopic optical coherence tomography. Biomed Opt Express 2012; 3:1914-23. [PMID: 22876354 PMCID: PMC3409709 DOI: 10.1364/boe.3.001914] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2012] [Revised: 07/18/2012] [Accepted: 07/18/2012] [Indexed: 05/18/2023]
Abstract
We have recently developed a novel dual window scheme for processing spectroscopic OCT images to provide spatially resolved true color imaging of chromophores in scattering samples. Here we apply this method to measure the extinction spectra of plasmonic nanoparticles at various concentrations for potential in vivo applications. We experimentally demonstrate sub-nanomolar sensitivity in the measurement of nanoparticle concentrations, and show that colorimetric imaging with multiple species of nanoparticles produces enhanced contrast for spectroscopic OCT in both tissue phantom and cell studies.
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Affiliation(s)
- You Leo Li
- Department of Biomedical Engineering and Fitzpatrick Institute for Photonics, Duke University, Durham NC 27708, USA
| | - Kevin Seekell
- Department of Biomedical Engineering and Fitzpatrick Institute for Photonics, Duke University, Durham NC 27708, USA
| | - Hsiangkuo Yuan
- Department of Biomedical Engineering and Fitzpatrick Institute for Photonics, Duke University, Durham NC 27708, USA
| | | | - Adam Wax
- Department of Biomedical Engineering and Fitzpatrick Institute for Photonics, Duke University, Durham NC 27708, USA
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