1
|
Chen XY, Zhou G, Zhang J. Optical coherence tomography: Promising imaging technique for the diagnosis of oral mucosal diseases. Oral Dis 2024; 30:3638-3651. [PMID: 38191786 DOI: 10.1111/odi.14851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 11/02/2023] [Accepted: 12/15/2023] [Indexed: 01/10/2024]
Abstract
OBJECTIVE This review aims to summarize the latest application of optical coherence tomography (OCT) in oral mucosal diseases, promoting an accurate and earlier diagnosis of such disorders, which are difficult to be differentiated. SUBJECTIVE AND METHODS References on the application of OCT in oral mucosal diseases were mainly obtained from PubMed, Embase, Web of Science and Scopus databases, using the keywords: "optical coherence tomography and 'oral mucosa/oral cancers/oral potentially malignant diseases/oral lichen planus/oral leukoplakia/oral erythroplakia/discoid lupus erythematosus/oral autoimmune bullous diseases/oral ulcers/erythema multiforme/oral mucositis'". RESULTS It is found that OCT is showing a promising application potential in the early detection, diagnosis, differential diagnosis, monitoring of oral cancer and oral dysplastic lesions, as well as the delineation of tumor margins. OCT is also playing an increasingly important role in the diagnosis of oral potentially malignant disorders, oral mucosal bullous diseases, oral ulcerative diseases, erythema multiforme, and the early detection of oral mucositis. CONCLUSION Optical coherence tomography, as a novel optical technique featured by real-time, noninvasive, dynamic and high-resolution imaging, is of great use to serve as an adjunct tool for the diagnosis, differential diagnosis, monitoring and therapy evaluation of oral mucosal diseases.
Collapse
Affiliation(s)
- Xu-Ya Chen
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Gang Zhou
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
- Department of Oral Medicine, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Jing Zhang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
- Department of Oral Medicine, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| |
Collapse
|
2
|
Zhang S, Kong N, Wang Z, Zhang Y, Ni C, Li L, Wang H, Yang M, Yang W, Yan F. Nanochemistry of gold: from surface engineering to dental healthcare applications. Chem Soc Rev 2024; 53:3656-3686. [PMID: 38502089 DOI: 10.1039/d3cs00894k] [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: 03/20/2024]
Abstract
Advancements in nanochemistry have led to the development of engineered gold nanostructures (GNSs) with remarkable potential for a variety of dental healthcare applications. These innovative nanomaterials offer unique properties and functionalities that can significantly improve dental diagnostics, treatment, and overall oral healthcare applications. This review provides an overview of the latest advancements in the design, synthesis, and application of GNSs for dental healthcare applications. Engineered GNSs have emerged as versatile tools, demonstrating immense potential across different aspects of dentistry, including enhanced imaging and diagnosis, prevention, bioactive coatings, and targeted treatment of oral diseases. Key highlights encompass the precise control over GNSs' size, crystal structure, shape, and surface functionalization, enabling their integration into sensing, imaging diagnostics, drug delivery systems, and regenerative therapies. GNSs, with their exceptional biocompatibility and antimicrobial properties, have demonstrated efficacy in combating dental caries, periodontitis, peri-implantitis, and oral mucosal diseases. Additionally, they show great promise in the development of advanced sensing techniques for early diagnosis, such as nanobiosensor technology, while their role in targeted drug delivery, photothermal therapy, and immunomodulatory approaches has opened new avenues for oral cancer therapy. Challenges including long-term toxicity, biosafety, immune recognition, and personalized treatment are under rigorous investigation. As research at the intersection of nanotechnology and dentistry continues to thrive, this review highlights the transformative potential of engineered GNSs in revolutionizing dental healthcare, offering accurate, personalized, and minimally invasive solutions to address the oral health challenges of the modern era.
Collapse
Affiliation(s)
- Shuang Zhang
- Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Institute of Stomatology, Nanjing University, Nanjing, China.
| | - Na Kong
- School of Life and Environmental Science, Centre for Sustainable Bioproducts, Deakin University, Geelong, VIC, Australia.
- Hainan Provincial Key Laboratory of Natural Rubber Processing, Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, China
| | - Zezheng Wang
- Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Institute of Stomatology, Nanjing University, Nanjing, China.
| | - Yangheng Zhang
- Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Institute of Stomatology, Nanjing University, Nanjing, China.
| | - Can Ni
- Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Institute of Stomatology, Nanjing University, Nanjing, China.
| | - Lingjun Li
- Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Institute of Stomatology, Nanjing University, Nanjing, China.
| | - Hongbin Wang
- School of Chemistry and Environment, Yunnan Minzu University, Kunming, China
| | - Min Yang
- School of Chemistry and Environment, Yunnan Minzu University, Kunming, China
| | - Wenrong Yang
- School of Life and Environmental Science, Centre for Sustainable Bioproducts, Deakin University, Geelong, VIC, Australia.
| | - Fuhua Yan
- Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Institute of Stomatology, Nanjing University, Nanjing, China.
| |
Collapse
|
3
|
Chakraborty D, Ghosh D, Kumar S, Jenkins D, Chandrasekaran N, Mukherjee A. Nano-diagnostics as an emerging platform for oral cancer detection: Current and emerging trends. WILEY INTERDISCIPLINARY REVIEWS. NANOMEDICINE AND NANOBIOTECHNOLOGY 2023; 15:e1830. [PMID: 35811418 DOI: 10.1002/wnan.1830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 06/05/2022] [Accepted: 06/15/2022] [Indexed: 01/31/2023]
Abstract
Globally, oral cancer kills an estimated 150,000 individuals per year, with 300,000 new cases being diagnosed annually. The high incidence rate of oral cancer among the South-Asian and American populations is majorly due to overuse of tobacco, alcohol, and poor dental hygiene. Additionally, socio-economic issues and lack of general awareness delay the primary screening of the disease. The availability of early screening techniques for oral cancer can help in carving out a niche for accurate disease prognosis and also its prevention. However, conventional diagnostic approaches and therapeutics are still far from optimal. Thus, enhancing the analytical performance of diagnostic platforms in terms of specificity and precision can help in understanding the disease progression paradigm. Fabrication of efficient nanoprobes that are sensitive, noninvasive, cost-effective, and less labor-intensive can reduce the global cancer burden. Recent advances in optical, electrochemical, and spectroscopy-based nano biosensors that employ noble and superparamagnetic nanoparticles, have been proven to be extremely efficient. Further, these sensitive nanoprobes can also be employed for predicting disease relapse after chemotherapy, when the majority of the biomarker load is eliminated. Herein, we provide the readers with a brief summary of conventional and new-age oral cancer detection techniques. A comprehensive understanding of the inherent challenges associated with conventional oral cancer detection techniques is discussed. We also elaborate on how nanoparticles have shown tremendous promise and effectiveness in radically transforming the approach toward oral cancer detection. This article is categorized under: Diagnostic Tools > Biosensing Diagnostic Tools > Diagnostic Nanodevices Diagnostic Tools > In Vitro Nanoparticle-Based Sensing.
Collapse
Affiliation(s)
- Debolina Chakraborty
- School of Advanced Sciences, Vellore Institute of Technology, Vellore, India.,Centre for Nanobiotechnology, Vellore Institute of Technology, Vellore, India
| | - Debayan Ghosh
- Centre for Nanobiotechnology, Vellore Institute of Technology, Vellore, India
| | - Sanjit Kumar
- Centre for Bioseparation Technology, Vellore Institute of Technology, Vellore, India
| | - David Jenkins
- Wolfson Nanomaterials & Devices Laboratory, School of Computing, Electronics and Mathematics, Faculty of Science & Engineering, University of Plymouth, Devon, UK
| | | | - Amitava Mukherjee
- Centre for Nanobiotechnology, Vellore Institute of Technology, Vellore, India
| |
Collapse
|
4
|
Wang A, Qi W, Gao T, Tang X. Molecular Contrast Optical Coherence Tomography and Its Applications in Medicine. Int J Mol Sci 2022; 23:ijms23063038. [PMID: 35328454 PMCID: PMC8949853 DOI: 10.3390/ijms23063038] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 03/05/2022] [Accepted: 03/08/2022] [Indexed: 12/28/2022] Open
Abstract
The growing need to understand the molecular mechanisms of diseases has prompted the revolution in molecular imaging techniques along with nanomedicine development. Conventional optical coherence tomography (OCT) is a low-cost in vivo imaging modality that provides unique high spatial and temporal resolution anatomic images but little molecular information. However, given the widespread adoption of OCT in research and clinical practice, its robust molecular imaging extensions are strongly desired to combine with anatomical images. A range of relevant approaches has been reported already. In this article, we review the recent advances of molecular contrast OCT imaging techniques, the corresponding contrast agents, especially the nanoparticle-based ones, and their applications. We also summarize the properties, design criteria, merit, and demerit of those contrast agents. In the end, the prospects and challenges for further research and development in this field are outlined.
Collapse
|
5
|
Yariv I, Kannan S, Harel Y, Levy E, Duadi H, Lellouche JP, Michaeli S, Fixler D. Iterative optical technique for detecting anti-leishmania nanoparticles in mouse lesions. BIOMEDICAL OPTICS EXPRESS 2021; 12:4496-4509. [PMID: 34457428 PMCID: PMC8367277 DOI: 10.1364/boe.425798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 06/16/2021] [Accepted: 06/17/2021] [Indexed: 06/13/2023]
Abstract
Nanoparticles (NPs) based drugs for topical administration are gaining interest in the biomedical world. However, a study tool of their penetration depth to the different tissue layers without additional markers or contrast agents is required in order to relieve safety concerns. While common diagnostic tools, e.g. X-ray, computed tomography or magnetic resonance imaging, can provide in vivo detection of the metallic NPs, their resolution cannot determine the exact penetration depth to the thin skin layers. In this work, we propose the noninvasive nanophotonics iterative multi-plane optical property extraction (IMOPE) technique for the novel iron-based NPs detection in leishmaniasis lesions. The optical properties of the different tissue layers: epidermis, dermis, subcutaneous fat and muscle, were examined before and after topical drug administration. The potential topical drug was detected in the epidermis (∼13µm) and dermis (∼160µm) layers in mice lesions at different stages of the disease (two or four weeks post infection). The lesion size influence on the detection was also observed, where in larger lesions the IMOPE senses a greater presence of the topical drug.
Collapse
Affiliation(s)
- Inbar Yariv
- Faculty of Engineering, Bar
Ilan University, Ramat Gan 5290002, Israel
- The Institute of Nanotechnology and
Advanced Materials, Bar Ilan University,
Ramat Gan 5290002, Israel
| | - Sriram Kannan
- The Institute of Nanotechnology and
Advanced Materials, Bar Ilan University,
Ramat Gan 5290002, Israel
- The Mina and Everard Goodman Faculty of
Life Sciences, Bar Ilan University, Ramat
Gan 5290002, Israel
| | - Yifat Harel
- The Institute of Nanotechnology and
Advanced Materials, Bar Ilan University,
Ramat Gan 5290002, Israel
- Department of Chemistry Faculty of Exact
Sciences, Bar Ilan University, Ramat Gan
5290002, Israel
| | - Esthy Levy
- The Institute of Nanotechnology and
Advanced Materials, Bar Ilan University,
Ramat Gan 5290002, Israel
- Department of Chemistry Faculty of Exact
Sciences, Bar Ilan University, Ramat Gan
5290002, Israel
| | - Hamootal Duadi
- Faculty of Engineering, Bar
Ilan University, Ramat Gan 5290002, Israel
- The Institute of Nanotechnology and
Advanced Materials, Bar Ilan University,
Ramat Gan 5290002, Israel
| | - Jean-Paul Lellouche
- The Institute of Nanotechnology and
Advanced Materials, Bar Ilan University,
Ramat Gan 5290002, Israel
- Department of Chemistry Faculty of Exact
Sciences, Bar Ilan University, Ramat Gan
5290002, Israel
| | - Shulamit Michaeli
- The Institute of Nanotechnology and
Advanced Materials, Bar Ilan University,
Ramat Gan 5290002, Israel
- The Mina and Everard Goodman Faculty of
Life Sciences, Bar Ilan University, Ramat
Gan 5290002, Israel
| | - Dror Fixler
- Faculty of Engineering, Bar
Ilan University, Ramat Gan 5290002, Israel
- The Institute of Nanotechnology and
Advanced Materials, Bar Ilan University,
Ramat Gan 5290002, Israel
| |
Collapse
|
6
|
Wrigglesworth EG, Johnston JH. Mie theory and the dichroic effect for spherical gold nanoparticles: an experimental approach. NANOSCALE ADVANCES 2021; 3:3530-3536. [PMID: 36133731 PMCID: PMC9417481 DOI: 10.1039/d1na00148e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 05/11/2021] [Indexed: 05/05/2023]
Abstract
The attractive optical properties of metallic nanoparticles include the optically interesting but surprisingly not well understood dichroic effect, defined in this research as when particle colloids display different colours in transmitted and reflected light. Here we use a systematic experimental approach supplemented by theoretical Mie theory analysis to study the origin of this effect. The CloudSpec spectrophotometer has been utilised to produce quantitative scattering and absorption spectra for monodisperse spherical gold nanoparticles, allowing precise links to be made between the optical spectra and the colours observed. The source of the dichroic effect has been conclusively linked to particle size with no special particle shapes or size distributions required. These results experimentally demonstrate the relationship between particle size and the ratio of scattering to absorption predicted by Mie theory, which has important implications for users of Mie theory calculations.
Collapse
Affiliation(s)
- Emma G Wrigglesworth
- School of Chemical and Physical Sciences, Victoria University of Wellington Wellington 6140 New Zealand
- NZ Product Accelerator, The University of Auckland Auckland 1142 New Zealand
| | - James H Johnston
- School of Chemical and Physical Sciences, Victoria University of Wellington Wellington 6140 New Zealand
- NZ Product Accelerator, The University of Auckland Auckland 1142 New Zealand
| |
Collapse
|
7
|
Si P, Razmi N, Nur O, Solanki S, Pandey CM, Gupta RK, Malhotra BD, Willander M, de la Zerda A. Gold nanomaterials for optical biosensing and bioimaging. NANOSCALE ADVANCES 2021; 3:2679-2698. [PMID: 36134176 PMCID: PMC9418567 DOI: 10.1039/d0na00961j] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 03/12/2021] [Indexed: 05/03/2023]
Abstract
Gold nanoparticles (AuNPs) are highly compelling nanomaterials for biomedical studies due to their unique optical properties. By leveraging the versatile optical properties of different gold nanostructures, the performance of biosensing and biomedical imaging can be dramatically improved in terms of their sensitivity, specificity, speed, contrast, resolution and penetration depth. Here we review recent advances of optical biosensing and bioimaging techniques based on three major optical properties of AuNPs: surface plasmon resonance, surface enhanced Raman scattering and luminescence. We summarize the fabrication methods and optical properties of different types of AuNPs, highlight the emerging applications of these AuNPs for novel optical biosensors and biomedical imaging innovations, and discuss the future trends of AuNP-based optical biosensors and bioimaging as well as the challenges of implementing these techniques in preclinical and clinical investigations.
Collapse
Affiliation(s)
- Peng Si
- Department of Structural Biology, Stanford University California 94305 USA
| | - Nasrin Razmi
- Department of Science and Technology, Physics and Electronics, Linköping University SE-60174 Norrköping Sweden
| | - Omer Nur
- Department of Science and Technology, Physics and Electronics, Linköping University SE-60174 Norrköping Sweden
| | - Shipra Solanki
- Department of Biotechnology, Delhi Technological University Shahbad Daulatpur Delhi 110042 India
- Department of Applied Chemistry, Delhi Technological University Shahbad Daulatpur Delhi 110042 India
| | - Chandra Mouli Pandey
- Department of Applied Chemistry, Delhi Technological University Shahbad Daulatpur Delhi 110042 India
| | - Rajinder K Gupta
- Department of Applied Chemistry, Delhi Technological University Shahbad Daulatpur Delhi 110042 India
| | - Bansi D Malhotra
- Department of Biotechnology, Delhi Technological University Shahbad Daulatpur Delhi 110042 India
| | - Magnus Willander
- Department of Science and Technology, Physics and Electronics, Linköping University SE-60174 Norrköping Sweden
| | - Adam de la Zerda
- Department of Structural Biology, Stanford University California 94305 USA
| |
Collapse
|
8
|
Chen F, Si P, de la Zerda A, Jokerst JV, Myung D. Gold nanoparticles to enhance ophthalmic imaging. Biomater Sci 2021; 9:367-390. [PMID: 33057463 PMCID: PMC8063223 DOI: 10.1039/d0bm01063d] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The use of gold nanoparticles as diagnostic tools is burgeoning, especially in the cancer community with a focus on theranostic applications to both cancer diagnosis and treatment. Gold nanoparticles have also demonstrated great potential for use in diagnostic and therapeutic approaches in ophthalmology. Although many ophthalmic imaging modalities are available, there is still a considerable unmet need, in particular for ophthalmic molecular imaging for the early detection of eye disease before morphological changes are more grossly visible. An understanding of how gold nanoparticles are leveraged in other fields could inform new ways they could be utilized in ophthalmology. In this paper, we review current ophthalmic imaging techniques and then identify optical coherence tomography (OCT) and photoacoustic imaging (PAI) as the most promising technologies amenable to the use of gold nanoparticles for molecular imaging. Within this context, the development of gold nanoparticles as OCT and PAI contrast agents are reviewed, with the most recent developments described in detail.
Collapse
Affiliation(s)
- Fang Chen
- Mary M. and Sash A. Spencer Center for Vision Research, Byers Eye Institute, Department of Ophthalmology, Stanford University, CA 94305, USA.
| | | | | | | | | |
Collapse
|
9
|
Lu GJ, Chou LD, Malounda D, Patel AK, Welsbie DS, Chao DL, Ramalingam T, Shapiro MG. Genetically Encodable Contrast Agents for Optical Coherence Tomography. ACS NANO 2020; 14:7823-7831. [PMID: 32023037 PMCID: PMC7685218 DOI: 10.1021/acsnano.9b08432] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Optical coherence tomography (OCT) has gained wide adoption in biological research and medical imaging due to its exceptional tissue penetration, 3D imaging speed, and rich contrast. However, OCT plays a relatively small role in molecular and cellular imaging due to the lack of suitable biomolecular contrast agents. In particular, while the green fluorescent protein has provided revolutionary capabilities to fluorescence microscopy by connecting it to cellular functions such as gene expression, no equivalent reporter gene is currently available for OCT. Here, we introduce gas vesicles, a class of naturally evolved gas-filled protein nanostructures, as genetically encodable OCT contrast agents. The differential refractive index of their gas compartments relative to surrounding aqueous tissue and their nanoscale motion enables gas vesicles to be detected by static and dynamic OCT. Furthermore, the OCT contrast of gas vesicles can be selectively erased in situ with ultrasound, allowing unambiguous assignment of their location. In addition, gas vesicle clustering modulates their temporal signal, enabling the design of dynamic biosensors. We demonstrate the use of gas vesicles as reporter genes in bacterial colonies and as purified contrast agents in vivo in the mouse retina. Our results expand the utility of OCT to image a wider variety of cellular and molecular processes.
Collapse
Affiliation(s)
- George J. Lu
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | - Li-dek Chou
- OCT Medical Imaging Inc., 9272 Jeronimo Road, Irvine, CA 92618, USA
| | - Dina Malounda
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | - Amit K. Patel
- Shiley Eye Institute, Andrew Viterbi Department of Ophthalmology, University of California San Diego, La Jolla, CA 92093, USA
| | - Derek S. Welsbie
- Shiley Eye Institute, Andrew Viterbi Department of Ophthalmology, University of California San Diego, La Jolla, CA 92093, USA
| | - Daniel L. Chao
- Shiley Eye Institute, Andrew Viterbi Department of Ophthalmology, University of California San Diego, La Jolla, CA 92093, USA
| | | | - Mikhail G. Shapiro
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| |
Collapse
|
10
|
Li X, Zhang W, Wang WY, Wu X, Li Y, Tan X, Matera DL, Baker BM, Paulus YM, Fan X, Wang X. Optical coherence tomography and fluorescence microscopy dual-modality imaging for in vivo single-cell tracking with nanowire lasers. BIOMEDICAL OPTICS EXPRESS 2020; 11:3659-3672. [PMID: 33014558 PMCID: PMC7510899 DOI: 10.1364/boe.395369] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 06/02/2020] [Accepted: 06/03/2020] [Indexed: 05/24/2023]
Abstract
Emerging cell-based therapies such as stem cell therapy and immunotherapy have attracted broad attention in both biological research and clinical practice. However, a long-standing technical gap of cell-based therapies is the difficulty of directly assessing treatment efficacy via tracking therapeutically administered cells. Therefore, imaging techniques to follow the in vivo distribution and migration of cells are greatly needed. Optical coherence tomography (OCT) is a clinically available imaging technology with ultrahigh-resolution and excellent imaging depth. It also shows great potential for in vivo cellular imaging. However, due to the homogeneity of current OCT cell labeling contrast agents (such as gold and polymer nanoparticles), only the distribution of entire cell populations can be observed. Precise tracking of the trajectory of individual single cells is not possible with such conventional contrast agents. Microlasers may provide a route to track unique cell identifiers given their small size, high emission intensities, rich emission spectra, and narrow linewidths. Here, we demonstrate that nanowire lasers internalized by cells provide both OCT and fluorescence signal. In addition, cells can be individually identified by the unique lasing emission spectra of the nanowires that they carry. Furthermore, single cell migration trajectories can be monitored both in vitro and in vivo with OCT and fluorescence microscopy dual-modality imaging system. Our study demonstrates the feasibility of nanowire lasers combined with the dual-modality imaging system for in vivo single cell tracking with a high spatial resolution and identity verification, an approach with great utility for stem cell and immunomodulatory therapies.
Collapse
Affiliation(s)
- Xuzhou Li
- Department of Biomedical Engineering, University of Michigan, 1101 Beal Ave., Ann Arbor, MI 48109, USA
- Department of Mechanical Engineering, University of Michigan, 2350 Hayward St., Ann Arbor, MI 48109, USA
- Xuzhou Li and Wei Zhang contributed equally to this work
| | - Wei Zhang
- Department of Biomedical Engineering, University of Michigan, 1101 Beal Ave., Ann Arbor, MI 48109, USA
- Xuzhou Li and Wei Zhang contributed equally to this work
| | - William Y Wang
- Department of Biomedical Engineering, University of Michigan, 1101 Beal Ave., Ann Arbor, MI 48109, USA
| | - Xiaoqin Wu
- Department of Biomedical Engineering, University of Michigan, 1101 Beal Ave., Ann Arbor, MI 48109, USA
| | - Yanxiu Li
- Department of Ophthalmology and Visual Sciences, University of Michigan, 1000 Wall St, Ann Arbor, MI 48105, USA
| | - Xiaotian Tan
- Department of Biomedical Engineering, University of Michigan, 1101 Beal Ave., Ann Arbor, MI 48109, USA
| | - Daniel L Matera
- Department of Biomedical Engineering, University of Michigan, 1101 Beal Ave., Ann Arbor, MI 48109, USA
| | - Brendon M Baker
- Department of Biomedical Engineering, University of Michigan, 1101 Beal Ave., Ann Arbor, MI 48109, USA
| | - Yannis M Paulus
- Department of Biomedical Engineering, University of Michigan, 1101 Beal Ave., Ann Arbor, MI 48109, USA
- Department of Ophthalmology and Visual Sciences, University of Michigan, 1000 Wall St, Ann Arbor, MI 48105, USA
| | - Xudong Fan
- Department of Biomedical Engineering, University of Michigan, 1101 Beal Ave., Ann Arbor, MI 48109, USA
| | - Xueding Wang
- Department of Biomedical Engineering, University of Michigan, 1101 Beal Ave., Ann Arbor, MI 48109, USA
| |
Collapse
|
11
|
Huang Y, Li M, Huang D, Qiu Q, Lin W, Liu J, Yang W, Yao Y, Yan G, Qu N, Tuchin VV, Fan S, Liu G, Zhao Q, Chen X. Depth-Resolved Enhanced Spectral-Domain OCT Imaging of Live Mammalian Embryos Using Gold Nanoparticles as Contrast Agent. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1902346. [PMID: 31304667 DOI: 10.1002/smll.201902346] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 06/21/2019] [Indexed: 05/12/2023]
Abstract
High-resolution and real-time visualization of the morphological changes during embryonic development are critical for studying congenital anomalies. Optical coherence tomography (OCT) has been used to investigate the process of embryogenesis. However, the structural visibility of the embryo is decreased with the depth due to signal roll-off and high light scattering. To overcome these obstacles, in this study, combined is a spectral-domain OCT (SD-OCT) with gold nanorods (GNRs) for 2D/3D imaging of live mouse embryos. Inductively coupled plasma mass spectrometry is used to confirm that GNRs can be effectively delivered to the embryos during ex vivo culture. OCT signal, image contrast, and penetration depth are all enhanced on the embryos with GNRs. These results show that after GNR treatment, more accurate spatial localization and better contrasting of the borders among organs can be observed on E9.5 and E10.5 mouse embryos. Furthermore, the strong optical absorbance of GNRs results in much clearer 3D images of the embryos, which can be used for calculating the heart areas and volumes of E9.5 and E10.5 embryos. These findings provide a promising strategy for monitoring organ development and detecting congenital structural abnormalities in mice.
Collapse
Affiliation(s)
- Yali Huang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, Organ Transplantation Institute, Center for Molecular Imaging and Translational Medicine, School of Medicine, School of Public Health, Xiamen University, Xiamen, 361102, China
| | - Minghui Li
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, Organ Transplantation Institute, Center for Molecular Imaging and Translational Medicine, School of Medicine, School of Public Health, Xiamen University, Xiamen, 361102, China
| | - Doudou Huang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, Organ Transplantation Institute, Center for Molecular Imaging and Translational Medicine, School of Medicine, School of Public Health, Xiamen University, Xiamen, 361102, China
| | - Qi Qiu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, Organ Transplantation Institute, Center for Molecular Imaging and Translational Medicine, School of Medicine, School of Public Health, Xiamen University, Xiamen, 361102, China
| | - Wenzhen Lin
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, Organ Transplantation Institute, Center for Molecular Imaging and Translational Medicine, School of Medicine, School of Public Health, Xiamen University, Xiamen, 361102, China
| | - Jiyan Liu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, Organ Transplantation Institute, Center for Molecular Imaging and Translational Medicine, School of Medicine, School of Public Health, Xiamen University, Xiamen, 361102, China
| | - Wensheng Yang
- Department of Pathology, Affiliated Chenggong Hospital, Xiamen University, Xiamen, 361000, China
| | - Youliang Yao
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, Organ Transplantation Institute, Center for Molecular Imaging and Translational Medicine, School of Medicine, School of Public Health, Xiamen University, Xiamen, 361102, China
| | - Guoliang Yan
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, Organ Transplantation Institute, Center for Molecular Imaging and Translational Medicine, School of Medicine, School of Public Health, Xiamen University, Xiamen, 361102, China
| | - Ning Qu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, Organ Transplantation Institute, Center for Molecular Imaging and Translational Medicine, School of Medicine, School of Public Health, Xiamen University, Xiamen, 361102, China
| | - Valery V Tuchin
- Research-Educational Institute of Optics and Biophotonics, Saratov State University, Saratov, 410012, Russia
- Laboratory of Laser Diagnostics of Technical and Living Systems, Institute of Precision Mechanics and Control of the Russian Academy of Science, Saratov, 410028, Russia
- Laboratory of Molecular Imaging, Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow, 119071, Russia
- Interdisciplinary Laboratory of Biophotonics, Tomsk State University, Tomsk, 634050, Russia
| | - Shanhui Fan
- College of Life Information Science and Instrument Engineering, Hangzhou Dianzi University, Hangzhou, 310018, China
| | - Gang Liu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, Organ Transplantation Institute, Center for Molecular Imaging and Translational Medicine, School of Medicine, School of Public Health, Xiamen University, Xiamen, 361102, China
| | - Qingliang Zhao
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, Organ Transplantation Institute, Center for Molecular Imaging and Translational Medicine, School of Medicine, School of Public Health, Xiamen University, Xiamen, 361102, China
| | - Xiaoyuan Chen
- Laboratory of Molecular Imaging and Nanomedicine, National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, MD, 20892, USA
| |
Collapse
|
12
|
Gordon AY, Lapierre-Landry M, Skala MC, Penn JS. Photothermal Optical Coherence Tomography of Anti-Angiogenic Treatment in the Mouse Retina Using Gold Nanorods as Contrast Agents. Transl Vis Sci Technol 2019; 8:18. [PMID: 31131155 PMCID: PMC6519216 DOI: 10.1167/tvst.8.3.18] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 02/28/2019] [Indexed: 01/16/2023] Open
Abstract
Purpose Optical coherence tomography (OCT) is widely used for ocular imaging in clinical and research settings. OCT natively provides structural information based on the reflectivity of the tissues it images. We demonstrate the utility of photothermal OCT (PTOCT) imaging of gold nanorods (GNR) in the mouse retina in vivo in the laser-induced choroidal neovascularization (LCNV) model to provide additional image contrast within the lesion. Methods Wild-type C57BL/6 mice were imaged following the intravenous injection of ICAM2-targeted or untargeted GNR. Mice were also imaged following the injection of ICAM2-targeted GNR with or without the additional ocular delivery of a neutralizing monoclonal anti-vascular endothelial growth factor (anti-VEGF) antibody. Results Mice cohorts injected with untargeted or ICAM2-targeted GNR demonstrated increased lesion-associated photothermal signal during subsequent imaging relative to phosphate-buffered saline (PBS)-injected controls. Additionally, intravitreal injection of anti-VEGF antibody caused a detectable reduction in the extent of anatomic laser damage and lesion-associated photothermal signal density in mice treated in the LCNV model and injected with ICAM2-targeted GNR. Conclusions These experiments demonstrate the ability of PTOCT imaging of GNR to detect anti-VEGF-induced changes in the mouse retina using the LCNV model. Translational Relevance This study shows that PTOCT imaging of GNR in the LCNV model can be used to detect clinically relevant, anti-VEGF-induced changes that are not visible using standard OCT systems. In the future this technology could be used to aid in early detection of disease, monitoring disease progress, and assessing its response to therapies.
Collapse
Affiliation(s)
- Andrew Y Gordon
- Department of Molecular Physiology and Biophysics, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Maryse Lapierre-Landry
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, USA.,Morgridge Institute for Research, Madison, WI, USA
| | - Melissa C Skala
- Morgridge Institute for Research, Madison, WI, USA.,Department of Biomedical Engineering, University of Wisconsin Madison, Madison, WI, USA
| | - John S Penn
- Department of Molecular Physiology and Biophysics, Vanderbilt University Medical Center, Nashville, TN, USA.,Department of Ophthalmology and Visual Sciences, Vanderbilt University Medical Center, Nashville, TN, USA
| |
Collapse
|
13
|
Chen XJ, Zhang XQ, Liu Q, Zhang J, Zhou G. Nanotechnology: a promising method for oral cancer detection and diagnosis. J Nanobiotechnology 2018; 16:52. [PMID: 29890977 PMCID: PMC5994839 DOI: 10.1186/s12951-018-0378-6] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 06/01/2018] [Indexed: 12/20/2022] Open
Abstract
Oral cancer is a common and aggressive cancer with high morbidity, mortality, and recurrence rate globally. Early detection is of utmost importance for cancer prevention and disease management. Currently, tissue biopsy remains the gold standard for oral cancer diagnosis, but it is invasive, which may cause patient discomfort. The application of traditional noninvasive methods-such as vital staining, exfoliative cytology, and molecular imaging-is limited by insufficient sensitivity and specificity. Thus, there is an urgent need for exploring noninvasive, highly sensitive, and specific diagnostic techniques. Nano detection systems are known as new emerging noninvasive strategies that bring the detection sensitivity of biomarkers to nano-scale. Moreover, compared to current imaging contrast agents, nanoparticles are more biocompatible, easier to synthesize, and able to target specific surface molecules. Nanoparticles generate localized surface plasmon resonances at near-infrared wavelengths, providing higher image contrast and resolution. Therefore, using nano-based techniques can help clinicians to detect and better monitor diseases during different phases of oral malignancy. Here, we review the progress of nanotechnology-based methods in oral cancer detection and diagnosis.
Collapse
Affiliation(s)
- Xiao-Jie Chen
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, 430079 People’s Republic of China
| | - Xue-Qiong Zhang
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, 430070 People’s Republic of China
| | - Qi Liu
- Division of Pharmacoengineering and Molecular Pharmaceutics and Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599 USA
| | - Jing Zhang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, 430079 People’s Republic of China
- Department of Oral Medicine, School and Hospital of Stomatology, Wuhan University, Wuhan, 430079 People’s Republic of China
| | - Gang Zhou
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, 430079 People’s Republic of China
- Department of Oral Medicine, School and Hospital of Stomatology, Wuhan University, Wuhan, 430079 People’s Republic of China
| |
Collapse
|
14
|
Yang S, Chen H, Liu L, Chen B, Yang Z, Wu C, Hu S, Lin H, Li B, Qu J. OCT imaging detection of brain blood vessels in mouse, based on semiconducting polymer nanoparticles. Analyst 2017; 142:4503-4510. [PMID: 29098214 DOI: 10.1039/c7an01245d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Optical Coherence Tomography (OCT) is a valuable technology that has been used to obtain microstructure images of tissue, and has several advantages, though its applications are limited in high-scattering tissues. Therefore, semiconducting polymer nanoparticles (SPNs) that possess strong absorption characteristics are applied to decrease light scattering in tissues and used as exogenous contrast agents for enhancing the contrast of OCT imaging detection. In this paper, we prepared two kinds of SPNs, termed PIDT-TBZ SPNs and PBDT-TBZ SPNs, as the contrast agents for OCT detection to enhance the signal. Firstly, we proved that they were good contrast agents for OCT imaging in agar-TiO2. After that, the contrast effects of these two SPNs were quantitatively analyzed, and then cerebral blood vessels were monitored by a home-made SD-OCT system. Finally, we created OCT images in vitro and in vivo with these two probes and performed quantitative analysis using the images. The results indicated that these SPNs created a clear contrast enhancement of small vessels in the OCT imaging process, which provides a basis for the application of SPNs as contrast agents for bioimaging studies.
Collapse
Affiliation(s)
- Shaozhuang Yang
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen 518060, China.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
15
|
Ni G, Liu L, Yu X, Ge X, Chen S, Liu X, Wang X, Chen S. Contrast enhancement of spectral domain optical coherence tomography using spectrum correction. Comput Biol Med 2017; 89:505-511. [PMID: 28898771 DOI: 10.1016/j.compbiomed.2017.09.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 08/14/2017] [Accepted: 09/01/2017] [Indexed: 11/17/2022]
Abstract
We report a spectrum correction method to enhance the image contrast of spectral domain optical coherence tomography (SD-OCT). Our method treats SD-OCT signals as the product of harmonic signals backscattered from a sample comprising a series of discrete reflectors and a window corresponding to the light source spectrum. The method restores the magnitude of the main lobe of the axial point spread function (PSF) by estimating the magnitudes of the backscattered harmonic signals and strengthens OCT signals using these estimated values. Experimental results acquired from fresh rat corneas and fixed human aortic atherosclerosis tissues show that our method provides clearer microstructural information than the conventional methods by improving the contrast to noise ratios (CNRs) by 1.4779 dB and 3.2595 dB, respectively. This improved image quality is obtained without any hardware change, making our method a cost-effective alternative to compete with hardware advances.
Collapse
Affiliation(s)
- Guangming Ni
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information, University of Electronic Science and Technology of China, No. 4, Section 2, North Jianshe Road, Chengdu, 610054, China; School of Electrical and Electronic Engineering, Nanyang Technological University, 639798, Singapore
| | - Linbo Liu
- School of Electrical and Electronic Engineering, Nanyang Technological University, 639798, Singapore.
| | - Xiaojun Yu
- School of Electrical and Electronic Engineering, Nanyang Technological University, 639798, Singapore; School of Automation, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China
| | - Xin Ge
- School of Electrical and Electronic Engineering, Nanyang Technological University, 639798, Singapore
| | - Si Chen
- School of Electrical and Electronic Engineering, Nanyang Technological University, 639798, Singapore
| | - Xinyu Liu
- School of Electrical and Electronic Engineering, Nanyang Technological University, 639798, Singapore
| | - Xianghong Wang
- School of Electrical and Electronic Engineering, Nanyang Technological University, 639798, Singapore
| | - Shi Chen
- School of Electrical and Electronic Engineering, Nanyang Technological University, 639798, Singapore
| |
Collapse
|
16
|
Chen W, Zhang S, Yu Y, Zhang H, He Q. Structural-Engineering Rationales of Gold Nanoparticles for Cancer Theranostics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:8567-8585. [PMID: 27461909 DOI: 10.1002/adma.201602080] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Revised: 06/02/2016] [Indexed: 05/20/2023]
Abstract
Personalized theranostics of cancer is increasingly desired, and can be realized by virtue of multifunctional nanomaterials with possible high performances. Gold nanoparticles (GNPs) are a type of especially promising candidate for cancer theranostics, because their synthesis and modification are facile, their structures and physicochemical properties are flexibly controlled, and they are also biocompatible. Especially, the localized surface plasmon resonance and multivalent coordination effects on the surface endow them with NIR light-triggered photothermal imaging and therapy, controlled drug release, and targeted drug delivery. Although the structure, properties, and theranostic application of GNPs are considerably plentiful, no expert review systematically explains the relationships among their structure, property. and application and induces the engineering rationales of GNPs for cancer theranostics. Hence, there are no clear rules to guide the facile construction of optimal GNP structures aiming at a specific theranostic application. A series of structural-engineering rationales of GNPs for cancer theranostics is proposed through digging out the deep relationships between the structure and properties of GNPs. These rationales will be inspiring for guiding the engineering of specific and advanced GNPs for personalized cancer theranostics.
Collapse
Affiliation(s)
- Wenwen Chen
- National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University, No. 3688 Nanhai Road, Nanshan District, Shenzhen, 518060, Guangdong, P. R. China
| | - Shaohua Zhang
- Department of Breast Cancer, Affiliated Hospital of Academy of Military Medical Sciences, No. 8 Dongdajie, Beijing, 100071, P. R. China
| | - Yangyang Yu
- National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University, No. 3688 Nanhai Road, Nanshan District, Shenzhen, 518060, Guangdong, P. R. China
| | - Huisheng Zhang
- National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University, No. 3688 Nanhai Road, Nanshan District, Shenzhen, 518060, Guangdong, P. R. China
| | - Qianjun He
- National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University, No. 3688 Nanhai Road, Nanshan District, Shenzhen, 518060, Guangdong, P. R. China.
| |
Collapse
|
17
|
Dong B, Chen S, Zhou F, Chan CHY, Yi J, Zhang HF, Sun C. Real-time Functional Analysis of Inertial Microfluidic Devices via Spectral Domain Optical Coherence Tomography. Sci Rep 2016; 6:33250. [PMID: 27619202 PMCID: PMC5020558 DOI: 10.1038/srep33250] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Accepted: 08/24/2016] [Indexed: 12/11/2022] Open
Abstract
We report the application of spectral-domain optical coherence tomography (SD-OCT) technology that enables real-time functional analysis of sorting microparticles and cells in an inertial microfluidic device. We demonstrated high-speed, high-resolution acquisition of cross-sectional images at a frame rate of 350 Hz, with a lateral resolution of 3 μm and an axial resolution of 1 μm within the microfluidic channel filled with water. We analyzed the temporal sequence of cross-sectional SD-OCT images to determine the position and diameter of microspheres in a spiral microfluidic channel under various flow rates. We used microspheres with known diameters to validate the sub-micrometer precision of the particle size analysis based on a scattering model of spherical microparticles. An additional investigation of sorting live HT-29 cells in the spiral microfluidic channel indicated that the distribution of cells within in the microchannel has a close correspondence with the cells’ size distribution. The label-free real-time imaging and analysis of microscale particles in flow offers robustness for practical applications with live cells and allows us to better understand the mechanisms of particle separations in microfluidic sorting systems.
Collapse
Affiliation(s)
- Biqin Dong
- Department of Mechanical Engineering, Northwestern University, Evanston IL 60208 USA.,Department of Biomedical Engineering, Northwestern University, Evanston IL 60208 USA
| | - Siyu Chen
- Department of Biomedical Engineering, Northwestern University, Evanston IL 60208 USA
| | - Fan Zhou
- Department of Mechanical Engineering, Northwestern University, Evanston IL 60208 USA
| | - Christina H Y Chan
- Department of Biomedical Engineering, Northwestern University, Evanston IL 60208 USA
| | - Ji Yi
- Department of Biomedical Engineering, Northwestern University, Evanston IL 60208 USA
| | - Hao F Zhang
- Department of Biomedical Engineering, Northwestern University, Evanston IL 60208 USA
| | - Cheng Sun
- Department of Mechanical Engineering, Northwestern University, Evanston IL 60208 USA
| |
Collapse
|
18
|
Ratheesh KM, Prabhathan P, Seah LK, Murukeshan VM. Gold nanorods with higher aspect ratio as potential contrast agent in optical coherence tomography and for photothermal applications around 1300 nm imaging window. Biomed Phys Eng Express 2016. [DOI: 10.1088/2057-1976/2/5/055005] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
19
|
Park J, Kang H, Kim YH, Lee SW, Lee TG, Wi JS. Physically-synthesized gold nanoparticles containing multiple nanopores for enhanced photothermal conversion and photoacoustic imaging. NANOSCALE 2016; 8:15514-15520. [PMID: 27527067 DOI: 10.1039/c6nr05376a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Physically-synthesized gold nanoparticles having a narrow size distribution and containing multiple nanopores have been utilized as photothermal converters and imaging contrast agents. Nanopores within the gold nanoparticles make it possible to increase the light-absorption cross-section and consequently exhibit distinct improvements in photothermal conversion and photoacoustic imaging efficiencies.
Collapse
Affiliation(s)
- Jisoo Park
- Center for Nano-Bio Measurement, Korea Research Institute of Standards and Science, Daejeon 305-340, Republic of Korea. and Department of Physics, Sungkyunkwan University, Suwon 440-746, Republic of Korea
| | - Heesung Kang
- Center for Nano-Bio Measurement, Korea Research Institute of Standards and Science, Daejeon 305-340, Republic of Korea.
| | - Young Heon Kim
- Center for Advanced Instrumentation, Korea Research Institute of Standards and Science, Daejeon 305-340, Republic of Korea
| | - Sang-Won Lee
- Center for Nano-Bio Measurement, Korea Research Institute of Standards and Science, Daejeon 305-340, Republic of Korea.
| | - Tae Geol Lee
- Center for Nano-Bio Measurement, Korea Research Institute of Standards and Science, Daejeon 305-340, Republic of Korea.
| | - Jung-Sub Wi
- Center for Nano-Bio Measurement, Korea Research Institute of Standards and Science, Daejeon 305-340, Republic of Korea.
| |
Collapse
|
20
|
Assadi H, Demidov V, Karshafian R, Douplik A, Vitkin IA. Microvascular contrast enhancement in optical coherence tomography using microbubbles. JOURNAL OF BIOMEDICAL OPTICS 2016; 21:76014. [PMID: 27533242 DOI: 10.1117/1.jbo.21.7.076014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Accepted: 07/11/2016] [Indexed: 06/06/2023]
Abstract
Gas microbubbles (MBs) are investigated as intravascular optical coherence tomography (OCT) contrast agents. Agar + intralipid scattering tissue phantoms with two embedded microtubes were fabricated to model vascular blood flow. One was filled with human blood, and the other with a mixture of human blood + MB. Swept-source structural and speckle variance (sv) OCT images, as well as speckle decorrelation times, were evaluated under both no-flow and varying flow conditions. Faster decorrelation times and higher structural and svOCT image contrasts were detected in the presence of MB in all experiments. The effects were largest in the svOCT imaging mode, and uniformly diminished with increasing flow velocity. These findings suggest the feasibility of utilizing MB for tissue hemodynamic investigations and for microvasculature contrast enhancement in OCT angiography.
Collapse
Affiliation(s)
- Homa Assadi
- Ryerson University, Department of Physics, 350 Victoria Street, Toronto, Ontario M5B 2K3, Canada
| | - Valentin Demidov
- University of Toronto, Department of Medical Biophysics, Toronto Medical Discovery Tower, MaRS Centre, 101 College Street, Room 15-701, Toronto, Ontario M5G 1L7, Canada
| | - Raffi Karshafian
- Ryerson University, Department of Physics, 350 Victoria Street, Toronto, Ontario M5B 2K3, CanadacSt. Michael Hospital, Keenan Research Centre of the LKS Knowledge Institute, 209 Victoria Street, Toronto M5B 1W8, Canada
| | - Alexandre Douplik
- Ryerson University, Department of Physics, 350 Victoria Street, Toronto, Ontario M5B 2K3, CanadacSt. Michael Hospital, Keenan Research Centre of the LKS Knowledge Institute, 209 Victoria Street, Toronto M5B 1W8, Canada
| | - I Alex Vitkin
- University of Toronto, Department of Medical Biophysics, Toronto Medical Discovery Tower, MaRS Centre, 101 College Street, Room 15-701, Toronto, Ontario M5G 1L7, CanadadUniversity Health Network, Princess Margaret Cancer Centre, 610 University Avenue, Tor
| |
Collapse
|
21
|
Sen D, SoRelle ED, Liba O, Dalal R, Paulus YM, Kim TW, Moshfeghi DM, de la Zerda A. High-resolution contrast-enhanced optical coherence tomography in mice retinae. JOURNAL OF BIOMEDICAL OPTICS 2016; 21:66002. [PMID: 27264492 PMCID: PMC4893203 DOI: 10.1117/1.jbo.21.6.066002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Accepted: 05/02/2016] [Indexed: 05/14/2023]
Abstract
Optical coherence tomography (OCT) is a noninvasive interferometric imaging modality providing anatomical information at depths of millimeters and a resolution of micrometers. Conventional OCT images limit our knowledge to anatomical structures alone, without any contrast enhancement. Therefore, here we have, for the first time, optimized an OCT-based contrast-enhanced imaging system for imaging single cells and blood vessels in vivo inside the living mouse retina at subnanomolar sensitivity. We used bioconjugated gold nanorods (GNRs) as exogenous OCT contrast agents. Specifically, we used anti-mouse CD45 coated GNRs to label mouse leukocytes and mPEG-coated GNRs to determine sensitivity of GNR detection in vivo inside mice retinae. We corroborated OCT observations with hyperspectral dark-field microscopy of formalin-fixed histological sections. Our results show that mouse leukocytes that otherwise do not produce OCT contrast can be labeled with GNRs leading to significant OCT intensity equivalent to a 0.5 nM GNR solution. Furthermore, GNRs injected intravenously can be detected inside retinal blood vessels at a sensitivity of ∼0.5 nM, and GNR-labeled cells injected intravenously can be detected inside retinal capillaries by enhanced OCT contrast. We envision the unprecedented resolution and sensitivity of functionalized GNRs coupled with OCT to be adopted for longitudinal studies of retinal disorders.
Collapse
Affiliation(s)
- Debasish Sen
- Stanford University, Department of Structural Biology, 299 Campus Drive, Stanford, California 94305, United States
- Stanford University, Molecular Imaging Program at Stanford, 299 Campus Drive, Stanford, California 94305, United States
| | - Elliott D. SoRelle
- Stanford University, Department of Structural Biology, 299 Campus Drive, Stanford, California 94305, United States
- Stanford University, Biophysics Program, 299 Campus Drive, Stanford, California 94305, United States
- Stanford University, Department of Electrical Engineering, 299 Campus Drive, Stanford, California 94305, United States
| | - Orly Liba
- Stanford University, Department of Structural Biology, 299 Campus Drive, Stanford, California 94305, United States
- Stanford University, Molecular Imaging Program at Stanford, 299 Campus Drive, Stanford, California 94305, United States
- Stanford University, Department of Electrical Engineering, 299 Campus Drive, Stanford, California 94305, United States
- Stanford University, Bio-X Program, 299 Campus Drive, Stanford, California, 94305, United States
| | - Roopa Dalal
- Stanford University, Department of Ophthalmology, 300 Pasteur Drive, Palo Alto, California 94304, United States
| | - Yannis M. Paulus
- Stanford University, Department of Structural Biology, 299 Campus Drive, Stanford, California 94305, United States
| | - Tae-Wan Kim
- Stanford University, Department of Structural Biology, 299 Campus Drive, Stanford, California 94305, United States
| | - Darius M. Moshfeghi
- Stanford University, Bio-X Program, 299 Campus Drive, Stanford, California, 94305, United States
- Stanford University, Department of Ophthalmology, Stanford Byers Eye Institute, 2452 Watson Court, Palo Alto, California 94303, United States
| | - Adam de la Zerda
- Stanford University, Department of Structural Biology, 299 Campus Drive, Stanford, California 94305, United States
- Stanford University, Molecular Imaging Program at Stanford, 299 Campus Drive, Stanford, California 94305, United States
- Stanford University, Biophysics Program, 299 Campus Drive, Stanford, California 94305, United States
- Stanford University, Department of Electrical Engineering, 299 Campus Drive, Stanford, California 94305, United States
- Stanford University, Bio-X Program, 299 Campus Drive, Stanford, California, 94305, United States
- Address all correspondence to: Adam de la Zerda, E-mail:
| |
Collapse
|
22
|
Winetraub Y, SoRelle ED, Liba O, de la Zerda A. Quantitative contrast-enhanced optical coherence tomography. APPLIED PHYSICS LETTERS 2016; 108:023702. [PMID: 26869724 PMCID: PMC4714990 DOI: 10.1063/1.4939547] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 12/22/2015] [Indexed: 05/18/2023]
Abstract
We have developed a model to accurately quantify the signals produced by exogenous scattering agents used for contrast-enhanced Optical Coherence Tomography (OCT). This model predicts distinct concentration-dependent signal trends that arise from the underlying physics of OCT detection. Accordingly, we show that real scattering particles can be described as simplified ideal scatterers with modified scattering intensity and concentration. The relation between OCT signal and particle concentration is approximately linear at concentrations lower than 0.8 particle per imaging voxel. However, at higher concentrations, interference effects cause signal to increase with a square root dependence on the number of particles within a voxel. Finally, high particle concentrations cause enough light attenuation to saturate the detected signal. Predictions were validated by comparison with measured OCT signals from gold nanorods (GNRs) prepared in water at concentrations ranging over five orders of magnitude (50 fM to 5 nM). In addition, we validated that our model accurately predicts the signal responses of GNRs in highly heterogeneous scattering environments including whole blood and living animals. By enabling particle quantification, this work provides a valuable tool for current and future contrast-enhanced in vivo OCT studies. More generally, the model described herein may inform the interpretation of detected signals in modalities that rely on coherence-based detection or are susceptible to interference effects.
Collapse
|
23
|
Kim J, Ahmad A, Li J, Marjanovic M, Chaney EJ, Suslick KS, Boppart SA. Intravascular magnetomotive optical coherence tomography of targeted early-stage atherosclerotic changes in ex vivo hyperlipidemic rabbit aortas. JOURNAL OF BIOPHOTONICS 2016; 9:109-16. [PMID: 25688525 PMCID: PMC4996077 DOI: 10.1002/jbio.201400128] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Revised: 12/14/2014] [Accepted: 01/02/2015] [Indexed: 05/19/2023]
Abstract
We report the development of an intravascular magnetomotive optical coherence tomography (IV-MM-OCT) system used with targeted protein microspheres to detect early-stage atherosclerotic fatty streaks/plaques. Magnetic microspheres (MSs) were injected in vivo in rabbits, and after 30 minutes of in vivo circulation, excised ex vivo rabbit aorta samples specimens were then imaged ex vivo with our prototype IV-MM-OCT system. The alternating magnetic field gradient was provided by a unique pair of external custom-built electromagnetic coils that modulated the targeted magnetic MSs. The results showed a statistically significant MM-OCT signal from the aorta samples specimens injected with targeted MSs.
Collapse
Affiliation(s)
- Jongsik Kim
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 North Mathews Avenue, Urbana, IL, USA 61801
| | - Adeel Ahmad
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 405 North Mathews Avenue, Urbana, IL, USA 61801
| | - Joanne Li
- Department of Bioengineering, University of Illinois at Urbana-Champaign, 405 North Mathews Avenue, Urbana, IL, USA 61801
| | - Marina Marjanovic
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 North Mathews Avenue, Urbana, IL, USA 61801
- Department of Bioengineering, University of Illinois at Urbana-Champaign, 405 North Mathews Avenue, Urbana, IL, USA 61801
| | - Eric J. Chaney
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 North Mathews Avenue, Urbana, IL, USA 61801
| | - Kenneth S. Suslick
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 North Mathews Avenue, Urbana, IL, USA 61801
- Department of Chemistry, University of Illinois at Urbana-Champaign, 405 North Mathews Avenue, Urbana, IL, USA 61801
| | - Stephen A. Boppart
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 North Mathews Avenue, Urbana, IL, USA 61801
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 405 North Mathews Avenue, Urbana, IL, USA 61801
- Department of Bioengineering, University of Illinois at Urbana-Champaign, 405 North Mathews Avenue, Urbana, IL, USA 61801
- Department of Internal Medicine, University of Illinois at Urbana-Champaign, 405 North Mathews Avenue, Urbana, IL, USA 61801
- Corresponding author: , Phone: +01 217 333 8598, Fax: +01 217 333 5833
| |
Collapse
|
24
|
Luo R, Li Y, Zhou Q, Zheng J, Ma D, Tang P, Yang S, Qing Z, Yang R. SERS monitoring the dynamics of local pH in lysosome of living cells during photothermal therapy. Analyst 2016; 141:3224-7. [DOI: 10.1039/c6an00467a] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A gold nanorod-based SERS nanotracker is proposed to monitor the local pH change during photothermal therapy.
Collapse
Affiliation(s)
- Rongxing Luo
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
- China
| | - Yinhui Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
- China
| | - Qifeng Zhou
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
- China
| | - Jing Zheng
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
- China
| | - Dandan Ma
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
- China
| | - Pinting Tang
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
- China
| | - Sheng Yang
- School of Chemistry and Biological Engineering
- Changsha University of Science and Technology
- Changsha
- China
| | - Zhihe Qing
- School of Chemistry and Biological Engineering
- Changsha University of Science and Technology
- Changsha
- China
| | - Ronghua Yang
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
- China
| |
Collapse
|
25
|
Watson JR, Gainer CF, Martirosyan N, Skoch J, Lemole GM, Anton R, Romanowski M. Augmented microscopy: real-time overlay of bright-field and near-infrared fluorescence images. JOURNAL OF BIOMEDICAL OPTICS 2015; 20:106002. [PMID: 26440760 PMCID: PMC4881285 DOI: 10.1117/1.jbo.20.10.106002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 09/02/2015] [Indexed: 05/10/2023]
Abstract
Intraoperative applications of near-infrared (NIR) fluorescent contrast agents can be aided by instrumentation capable of merging the view of surgical field with that of NIR fluorescence. We demonstrate augmented microscopy, an intraoperative imaging technique in which bright-field (real) and electronically processed NIR fluorescence (synthetic) images are merged within the optical path of a stereomicroscope. Under luminance of 100,000 lx, representing typical illumination of the surgical field, the augmented microscope detects 189 nM concentration of indocyanine green and produces a composite of the real and synthetic images within the eyepiece of the microscope at 20 fps. Augmentation described here can be implemented as an add-on module to visualize NIR contrast agents, laser beams, or various types of electronic data within the surgical microscopes commonly used in neurosurgical, cerebrovascular, otolaryngological, and ophthalmic procedures.
Collapse
Affiliation(s)
- Jeffrey R. Watson
- University of Arizona, Department of Biomedical Engineering, 1657 E. Helen Street, Tucson, Arizona 85721, United States
| | - Christian F. Gainer
- University of Arizona, Department of Biomedical Engineering, 1657 E. Helen Street, Tucson, Arizona 85721, United States
| | - Nikolay Martirosyan
- University of Arizona, Division of Neurosurgery, Department of Surgery, 1501 N. Campbell Avenue, Tucson, Arizona 85721, United States
| | - Jesse Skoch
- University of Arizona, Division of Neurosurgery, Department of Surgery, 1501 N. Campbell Avenue, Tucson, Arizona 85721, United States
| | - G. Michael Lemole
- University of Arizona, Division of Neurosurgery, Department of Surgery, 1501 N. Campbell Avenue, Tucson, Arizona 85721, United States
| | - Rein Anton
- University of Arizona, Division of Neurosurgery, Department of Surgery, 1501 N. Campbell Avenue, Tucson, Arizona 85721, United States
| | - Marek Romanowski
- University of Arizona, Department of Biomedical Engineering, 1657 E. Helen Street, Tucson, Arizona 85721, United States
- Address all correspondence to: Marek Romanowski, E-mail:
| |
Collapse
|
26
|
Affiliation(s)
- Xuan Yang
- The
Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
| | | | - Bo Pang
- The
Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
| | | | - Younan Xia
- The
Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
| |
Collapse
|
27
|
Fortune B. In vivo imaging methods to assess glaucomatous optic neuropathy. Exp Eye Res 2015; 141:139-53. [PMID: 26048475 DOI: 10.1016/j.exer.2015.06.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2015] [Revised: 05/13/2015] [Accepted: 06/01/2015] [Indexed: 10/23/2022]
Abstract
The goal of this review is to summarize the most common imaging methods currently applied for in vivo assessment of ocular structure in animal models of experimental glaucoma with an emphasis on translational relevance to clinical studies of the human disease. The most common techniques in current use include optical coherence tomography and scanning laser ophthalmoscopy. In reviewing the application of these and other imaging modalities to study glaucomatous optic neuropathy, this article is organized into three major sections: 1) imaging the optic nerve head, 2) imaging the retinal nerve fiber layer and 3) imaging retinal ganglion cell soma and dendrites. The article concludes with a brief section on possible future directions.
Collapse
Affiliation(s)
- Brad Fortune
- Discoveries in Sight Research Laboratories, Devers Eye Institute and Legacy Research Institute, Legacy Health, 1225 NE Second Avenue, Portland, OR 97232, USA.
| |
Collapse
|
28
|
Jia Y, Liu G, Gordon AY, Gao SS, Pechauer AD, Stoddard J, McGill TJ, Jayagopal A, Huang D. Spectral fractionation detection of gold nanorod contrast agents using optical coherence tomography. OPTICS EXPRESS 2015; 23:4212-25. [PMID: 25836459 PMCID: PMC4394760 DOI: 10.1364/oe.23.004212] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Revised: 01/14/2015] [Accepted: 02/05/2015] [Indexed: 05/27/2023]
Abstract
We demonstrate the proof of concept of a novel Fourier-domain optical coherence tomography contrast mechanism using gold nanorod contrast agents and a spectral fractionation processing technique. The methodology detects the spectral shift of the backscattered light from the nanorods by comparing the ratio between the short and long wavelength halves of the optical coherence tomography signal intensity. Spectral fractionation further divides the halves into sub-bands to improve spectral contrast and suppress speckle noise. Herein, we show that this technique can detect gold nanorods in intralipid tissue phantoms. Furthermore, cellular labeling by gold nanorods was demonstrated using retinal pigment epithelial cells in vitro.
Collapse
Affiliation(s)
- Yali Jia
- Casey Eye Institute, Oregon Health & Science University, Portland, Oregon 97239,
USA
- Co-first authors
| | - Gangjun Liu
- Casey Eye Institute, Oregon Health & Science University, Portland, Oregon 97239,
USA
- Co-first authors
| | - Andrew Y. Gordon
- Department of Molecular Physiology and Biophysics, Vanderbilt University Medical Center, Nashville, Tennessee 37232,
USA
| | - Simon S. Gao
- Casey Eye Institute, Oregon Health & Science University, Portland, Oregon 97239,
USA
| | - Alex D. Pechauer
- Casey Eye Institute, Oregon Health & Science University, Portland, Oregon 97239,
USA
| | - Jonathan Stoddard
- Casey Eye Institute, Oregon Health & Science University, Portland, Oregon 97239,
USA
| | - Trevor J. McGill
- Casey Eye Institute, Oregon Health & Science University, Portland, Oregon 97239,
USA
| | - Ashwath Jayagopal
- Department of Ophthalmology and Visual Sciences, Vanderbilt Eye Institute, Nashville, Tennessee 37232,
USA
| | - David Huang
- Casey Eye Institute, Oregon Health & Science University, Portland, Oregon 97239,
USA
| |
Collapse
|
29
|
Locatelli E, Monaco I, Comes Franchini M. Surface modifications of gold nanorods for applications in nanomedicine. RSC Adv 2015. [DOI: 10.1039/c4ra16473c] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Surface modification of gold nanorods allows biocompatibility and complex architecture design for novel theranostic applications.
Collapse
Affiliation(s)
- E. Locatelli
- Department of Industrial Chemistry “Toso Montanari”
- University of Bologna
- 40136 Bologna
- Italia
| | - I. Monaco
- Department of Industrial Chemistry “Toso Montanari”
- University of Bologna
- 40136 Bologna
- Italia
| | - M. Comes Franchini
- Department of Industrial Chemistry “Toso Montanari”
- University of Bologna
- 40136 Bologna
- Italia
| |
Collapse
|
30
|
Nahas A, Varna M, Fort E, Boccara AC. Detection of plasmonic nanoparticles with full field-OCT: optical and photothermal detection. BIOMEDICAL OPTICS EXPRESS 2014; 5:3541-6. [PMID: 25360370 PMCID: PMC4206322 DOI: 10.1364/boe.5.003541] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Revised: 08/27/2014] [Accepted: 09/07/2014] [Indexed: 05/19/2023]
Abstract
Detecting the signal backscattered by nanoparticles immersed in highly scattering media such as biological tissue remains a challenge. In this article we report on the use of Full Field OCT (FF-OCT) to slice in depth in phantoms and in tissues in order a) to selectively observe the particles through the backscattered light at suitable wavelengths, and b) to detect the effects of the time-dependent response to full field optical heating through the strong absorption cross-section of these plasmonic nanoparticles. The analysis of the thermal wave behavior leads to the localization of the heat sources even when FF-OCT signals cannot reach the heated area.
Collapse
|
31
|
Imaging single chiral nanoparticles in turbid media using circular-polarization optical coherence microscopy. Sci Rep 2014; 4:4979. [PMID: 24828009 PMCID: PMC4021320 DOI: 10.1038/srep04979] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Accepted: 04/25/2014] [Indexed: 12/23/2022] Open
Abstract
Optical coherence tomography (OCT) is a widely used structural imaging method. However, it has limited use in molecular imaging due to the lack of an effective contrast mechanism. Gold nanoparticles have been widely used as molecular probes for optical microcopy based on Surface Plasmon Resonance (SPR). Unfortunately, the SPR enhanced backscattering from nanoparticles is still relatively weak compared with the background signal from microscopic structures in biological tissues when imaged with OCT. Consequently, it is extremely challenging to perform OCT imaging of conventional nanoparticles in thick tissues with sensitivity comparable to that of fluorescence imaging. We have discovered and demonstrated a novel approach towards remarkable contrast enhancement, which is achieved by the use of a circular-polarization optical coherence microscopy system and 3-dimensional chiral nanostructures as contrast agents. By detecting the circular intensity differential depolarization (CIDD), we successfully acquired high quality images of single chiral nanoparticles underneath a 1-mm-thick tissue -mimicking phantom.
Collapse
|
32
|
Lan SM, Wu YN, Wu PC, Sun CK, Shieh DB, Lin RM. Advances in noninvasive functional imaging of bone. Acad Radiol 2014; 21:281-301. [PMID: 24439341 DOI: 10.1016/j.acra.2013.11.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Revised: 11/20/2013] [Accepted: 11/26/2013] [Indexed: 02/03/2023]
Abstract
The demand for functional imaging in clinical medicine is comprehensive. Although the gold standard for the functional imaging of human bones in clinical settings is still radionuclide-based imaging modalities, nonionizing noninvasive imaging technology in small animals has greatly advanced in recent decades, especially the diffuse optical imaging to which Britton Chance made tremendous contributions. The evolution of imaging probes, instruments, and computation has facilitated exploration in the complicated biomedical research field by allowing longitudinal observation of molecular events in live cells and animals. These research-imaging tools are being used for clinical applications in various specialties, such as oncology, neuroscience, and dermatology. The Bone, a deeply located mineralized tissue, presents a challenge for noninvasive functional imaging in humans. Using nanoparticles (NP) with multiple favorable properties as bioimaging probes has provided orthopedics an opportunity to benefit from these noninvasive bone-imaging techniques. This review highlights the historical evolution of radionuclide-based imaging, computed tomography, positron emission tomography, and magnetic resonance imaging, diffuse optics-enabled in vivo technologies, vibrational spectroscopic imaging, and a greater potential for using NPs for biomedical imaging.
Collapse
|
33
|
Black KC, Sileika TS, Yi J, Zhang R, Rivera JG, Messersmith PB. Bacterial killing by light-triggered release of silver from biomimetic metal nanorods. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2014; 10:169-178. [PMID: 23847147 PMCID: PMC4065421 DOI: 10.1002/smll.201301283] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Indexed: 05/18/2023]
Abstract
Illumination of noble metal nanoparticles at the plasmon resonance causes substantial heat generation, and the transient and highly localized temperature increases that result from this energy conversion can be exploited for photothermal therapy by plasmonically heating gold nanorods (NRs) bound to cell surfaces. Here, plasmonic heating is used for the first time to locally release silver from gold core/silver shell (Au@Ag) NRs targeted to bacterial cell walls. A novel biomimetic method of preparing Au@Ag core-shell NRs is employed, involving deposition of a thin organic polydopamine (PD) primer onto Au NR surfaces, followed by spontaneous electroless silver metallization, and conjugation of antibacterial antibodies and passivating polymers for targeting to gram-negative and gram-positive bacteria. Dramatic cytotoxicity of S. epidermidis and E. coli cells targeted with Au@Ag NRs is observed upon exposure to light as a result of the combined antibacterial effects of plasmonic heating and silver release. The antibacterial effect is much greater than with either plasmonic heating or silver alone, implying a strong therapeutic synergy between cell-targeted plasmonic heating and the associated silver release upon irradiation. The findings suggest a potential antibacterial use of Au@Ag NRs when coupled with light irradiation, which has not been previously described.
Collapse
Affiliation(s)
- Kvar C.L. Black
- Biomedical Engineering Department, Northwestern University, Evanston, Illinois 60208
- Chemistry of Life Processes Institute, Northwestern University, Evanston, Illinois 60208
- Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Evanston, Illinois 60208
| | - Tadas S. Sileika
- Biomedical Engineering Department, Northwestern University, Evanston, Illinois 60208
- Chemistry of Life Processes Institute, Northwestern University, Evanston, Illinois 60208
| | - Ji Yi
- Biomedical Engineering Department, Northwestern University, Evanston, Illinois 60208
- Chemistry of Life Processes Institute, Northwestern University, Evanston, Illinois 60208
| | - Ran Zhang
- Materials Science and Engineering Department, Northwestern University, Evanston, Illinois 60208
| | - José G. Rivera
- Biomedical Engineering Department, Northwestern University, Evanston, Illinois 60208
- Chemistry of Life Processes Institute, Northwestern University, Evanston, Illinois 60208
| | - Phillip B. Messersmith
- Biomedical Engineering Department, Northwestern University, Evanston, Illinois 60208
- Materials Science and Engineering Department, Northwestern University, Evanston, Illinois 60208
- Chemical and Biological Engineering Department, Northwestern University, Evanston, Illinois 60208
- Chemistry of Life Processes Institute, Northwestern University, Evanston, Illinois 60208
- Institute for Bionanotechnology in Medicine, Northwestern University, Evanston, Illinois 60208
- Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Evanston, Illinois 60208
| |
Collapse
|
34
|
Zheng X, Verellen N, Volskiy V, Valev VK, Baumberg JJ, Vandenbosch GAE, Moshchalkov VV. Interacting plasmonic nanostructures beyond the quasi-static limit: a "circuit" model. OPTICS EXPRESS 2013; 21:31105-31118. [PMID: 24514685 DOI: 10.1364/oe.21.031105] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The interaction between individual plasmonic nanoparticles plays a crucial role in tuning and shaping the surface plasmon resonances of a composite structure. Here, we demonstrate that the detailed character of the coupling between plasmonic structures can be captured by a modified "circuit" model. This approach is generally applicable and, as an example here, is applied to a dolmen-like nanostructure consisting of a vertically placed gold monomer slab and two horizontally placed dimer slabs. By utilizing the full-wave eigenmode expansion method (EEM), we extract the eigenmodes and eigenvalues for these constituting elements and reduce their electromagnetic interaction to the structures' mode interactions. Using the reaction concept, we further summarize the mode interactions within a "coupling" matrix. When the driving voltage source imposed by the incident light is identified, an equivalent circuit model can be constructed. Within this model, hybridization of the plasmonic modes in the constituting nanostructure elements is discussed. The proposed circuit model allows the reuse of powerful circuit analysis techniques in the context of plasmonic structures. As an example, we derive an equivalent of Thévenin's theorem in circuit theory for nanostructures. Applying the equivalent Thévenin's theorem, the well-known Fano resonance is easily explained.
Collapse
|
35
|
Xi J, Chen Y, Li X. Characterizing optical properties of nano contrast agents by using cross-referencing OCT imaging. BIOMEDICAL OPTICS EXPRESS 2013; 4:842-51. [PMID: 23761848 PMCID: PMC3675864 DOI: 10.1364/boe.4.000842] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Revised: 05/06/2013] [Accepted: 05/07/2013] [Indexed: 05/20/2023]
Abstract
We report a cross-referencing method to quickly and accurately characterize the optical properties of nanoparticles including the extinction, scattering, absorption and backscattering cross sections by using an OCT system alone. Among other applications, such a method is particularly useful for developing nanoparticle-based OCT imaging contrast agents. The method involves comparing two depth-dependent OCT intensity signals collected from two samples (with one having and the other not having the nanoparticles), to extract the extinction and backscattering coefficient, from which the absorption coefficient can be further deduced (with the help of the established scattering theories for predicting the ratio of the backscattering to total scattering cross section). The method has been experimentally validated using test nanoparticles and was then applied to characterizing gold nanocages. With the aid of this method, we were able to successfully synthesize scattering dominant gold nanocages for the first time and demonstrated the highest contrast enhancement ever achieved by the gold nanocages (and by any nanoparticles of a similar size and concentration) in an in vivo mouse tumor model. This method also enables quantitative analysis of contrast enhancement and provides a general guideline on choosing the optimal concentration and optical properties for the nanoparticle-based OCT contrast agents.
Collapse
|
36
|
Prabhulkar S, de la Zerda A, Paranjape A, Awdeh RM. Single step nanoplasmonic immunoassay for the measurement of protein biomarkers. BIOSENSORS 2013; 3:77-88. [PMID: 25587399 PMCID: PMC4263591 DOI: 10.3390/bios3010077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Revised: 01/18/2013] [Accepted: 02/01/2013] [Indexed: 06/04/2023]
Abstract
A nanoplasmonic biosensor for highly-sensitive, single-step detection of protein biomarkers is presented. The principle is based on the utilization of the optical scattering properties of gold nanorods (GNRs) conjugated to bio-recognition molecules. The nanoplasmonic properties of the GNRs were utilized to detect proteins using near-infrared light interferometry. We show that the antibody-conjugated GNRs can specifically bind to our model analyte, Glucose Transporter-1 (Glut-1). The signal intensity of back-scattered light from the GNRs bound after incubation, correlated well to the Glut-1 concentration as per the calibration curve. The detection range using this nanoplasmonic immunoassay ranges from 10 ng/mL to 1 ug/mL for Glut-1. The minimal detectable concentration based on the lowest discernable concentration from zero is 10 ng/mL. This nanoplasmonic immunoassay can act as a simple, selective, sensitive strategy for effective disease diagnosis. It offers advantages such as wide detection range, increased speed of analysis (due to fewer incubation/washing steps), and no label development as compared to traditional immunoassay techniques. Our future goal is to incorporate this detection strategy onto a microfluidic platform to be used as a point-of-care diagnostic tool.
Collapse
Affiliation(s)
- Shradha Prabhulkar
- Department of Ophthalmology, University of Miami-Bascom Palmer Eye Institute, Miami, FL 33136, USA; E-Mails: (S.P.); (A.P.)
| | - Adam de la Zerda
- Department of Structural Biology, Stanford University, Palo Alto, CA 94305, USA; E-Mail:
| | - Amit Paranjape
- Department of Ophthalmology, University of Miami-Bascom Palmer Eye Institute, Miami, FL 33136, USA; E-Mails: (S.P.); (A.P.)
| | - Richard M Awdeh
- Department of Ophthalmology, University of Miami-Bascom Palmer Eye Institute, Miami, FL 33136, USA; E-Mails: (S.P.); (A.P.)
| |
Collapse
|
37
|
Prabhulkar S, Matthews J, Rawal S, Awdeh RM. Molecular histopathology using gold nanorods and optical coherence tomography. Invest Ophthalmol Vis Sci 2013; 54:1192-200. [PMID: 23307958 DOI: 10.1167/iovs.12-10794] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
PURPOSE To examine the novel application of a commercially available optical coherence tomography (OCT) system toward molecular histopathology using gold nanorod (GNR) linked antibodies as a functionalized contrast agent to evaluate ocular surface squamous neoplasia (OSSN). METHODS GNRs were synthesized and covalently attached to anti-glucose transporter-1 (GLUT-1) antibodies via carbodiimide chemistry. Three specimens from each of three distinct categories of human conjunctival tissue were selected for analysis, including conjunctiva without epithelial atypia (controls); conjunctival intraepithelial neoplasia, carcinoma in situ (CIS); and conjunctival squamous cell carcinoma (SCC). Tissue sections were incubated initially with GNR tagged anti-GLUT-1 antibodies and then with a fluorescent-tagged secondary antibody. Immunofluorescence and OCT imaging of the tissue was performed and the results were correlated to the light microscopic findings on traditional hemotoxyin and eosin stained sections. RESULTS No binding of the functionalized GNRs was observed within the epithelium of three normal conjunctiva controls. While immunofluorescence disclosed variable binding of the functionalized GNRs to atypical epithelial cells in all six cases of OSSN, the enhancement of the OCT signal in three cases of CIS was insufficient to distinguish these specimens from normal controls. In two of three cases of SCC, binding of functionalized GNRs was sufficient to produce an increased scattering effect on OCT in areas correlating to atypical epithelial cells which stained intensely on immunofluorescence imaging. Binding of functionalized GNRs was sufficient to produce an increased scattering effect on OCT in areas correlating to regions of erythrocytes and hemorrhage which stained intensely on immunofluorescence imaging within all nine tested samples. CONCLUSIONS We have demonstrated the use of OCT for molecular histopathology using functionalized gold nanorods in the setting of OSSN. Our results suggest a threshold concentration of functionalized GNRs within tissue is required to achieve a detectable enhancement in scattering of the OCT signal.
Collapse
Affiliation(s)
- Shradha Prabhulkar
- Department of Ophthalmology, University of Miami-Bascom Palmer Eye Institute, Miami, FL 33136, USA.
| | | | | | | |
Collapse
|
38
|
Zhang Y, Qian J, Wang D, Wang Y, He S. Multifunctional Gold Nanorods with Ultrahigh Stability and Tunability for In Vivo Fluorescence Imaging, SERS Detection, and Photodynamic Therapy. Angew Chem Int Ed Engl 2012; 52:1148-51. [DOI: 10.1002/anie.201207909] [Citation(s) in RCA: 201] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Indexed: 11/12/2022]
|
39
|
Zhang Y, Qian J, Wang D, Wang Y, He S. Multifunctional Gold Nanorods with Ultrahigh Stability and Tunability for In Vivo Fluorescence Imaging, SERS Detection, and Photodynamic Therapy. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201207909] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
40
|
Gabriele Sandrian M, Wollstein G, Schuman JS, Bilonick RA, Ling Y, Ishikawa H, Kagemann L, McKenna KC. Inflammatory response to intravitreal injection of gold nanorods. Br J Ophthalmol 2012; 96:1522-9. [PMID: 23087415 DOI: 10.1136/bjophthalmol-2012-301904] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
AIM To evaluate the utility of gold nanorods (AuNRs) as a contrast agent for ocular optical coherence tomography (OCT). METHODS Mice were intravitreally injected with sterile AuNRs coated with either poly(strenesulfate) (PSS-AuNRs) or anti-CD90.2 antibodies (Ab-AuNRs), and imaged using OCT. After 24 h, eyes were processed for transmission electron microscopy or rendered into single cell suspensions for flow cytometric analysis to determine absolute numbers of CD45(+) leukocytes and subsets (T cells, myeloid cells, macrophages, neutrophils). Generalised estimation equations were used to compare cell counts between groups. RESULTS PSS-AuNRs and Ab-AuNRs were visualised in the vitreous 30 min and 24 h post-injection with OCT. At 24 h, a statistically significant increase in leukocytes, comprised primarily of neutrophils, was observed in eyes that received either AuNR in comparison to eyes that received saline. The accumulation of leukocytes was equal in eyes given PSS-AuNR or Ab-AuNR. Endotoxin-resistant C3H/HeJ mice also showed ocular inflammation after injection with AuNRs, indicating that the inflammatory response was not due to lipopolysaccharide contamination of AuNRs. CONCLUSIONS Although AuNRs can be visualised in the eye using OCT, they can induce ocular inflammation, which limits their use as a contrast agent.
Collapse
Affiliation(s)
- Michelle Gabriele Sandrian
- Department of Ophthalmology, UPMC Eye Center, Eye and Ear Institute, Ophthalmology and Visual Science Research Center, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15213, USA
| | | | | | | | | | | | | | | |
Collapse
|
41
|
Sajjadi AY, Suratkar A, Mitra K, Grace MS. Short-Pulse Laser-Based System for Detection of Tumors: Administration of Gold Nanoparticles Enhances Contrast. J Nanotechnol Eng Med 2012. [DOI: 10.1115/1.4007245] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The objective of this paper is to demonstrate the use of gold nanoparticles, which accumulate in tumors due to the leakiness of tumor vasculature, as contrast agents for enhanced imaging in a time-resolved optical tomography system using short-pulse lasers for skin cancer detection in mouse model. It is found that intravenously administrated spherical gold nanoparticles broadened the temporal profile of reflected optical signals and enhanced the contrast between surrounding normal tissue and tumors. These results show that gold nanoparticles tuned to the wavelength of the laser can enhance the resolution and precision of laser-based cancer detection system.
Collapse
Affiliation(s)
| | | | - K. Mitra
- Department of Mechanical & Aerospace Engineering, Florida Institute of Technology, Melbourne, FL 32901
| | - M. S. Grace
- Department of Biological Sciences, Florida Institute of Technology, Melbourne, FL 32901
| |
Collapse
|
42
|
Hepel M, Blake D, McCabe M, Stobiecka M, Coopersmith K. Assembly of Gold Nanoparticles Induced by Metal Ions. ACS SYMPOSIUM SERIES 2012. [DOI: 10.1021/bk-2012-1112.ch008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Maria Hepel
- Department of Chemistry, State University of New York at Potsdam, Potsdam, New York 13676, U.S.A
- Permanent address: Department of Biophysics, Warsaw University of Life Sciences SGGW, Bldg. 34, 159 Nowoursynowska St., 02776 Warsaw, Poland
| | - Dustin Blake
- Department of Chemistry, State University of New York at Potsdam, Potsdam, New York 13676, U.S.A
- Permanent address: Department of Biophysics, Warsaw University of Life Sciences SGGW, Bldg. 34, 159 Nowoursynowska St., 02776 Warsaw, Poland
| | - Matthew McCabe
- Department of Chemistry, State University of New York at Potsdam, Potsdam, New York 13676, U.S.A
- Permanent address: Department of Biophysics, Warsaw University of Life Sciences SGGW, Bldg. 34, 159 Nowoursynowska St., 02776 Warsaw, Poland
| | - Magdalena Stobiecka
- Department of Chemistry, State University of New York at Potsdam, Potsdam, New York 13676, U.S.A
- Permanent address: Department of Biophysics, Warsaw University of Life Sciences SGGW, Bldg. 34, 159 Nowoursynowska St., 02776 Warsaw, Poland
| | - Kaitlin Coopersmith
- Department of Chemistry, State University of New York at Potsdam, Potsdam, New York 13676, U.S.A
- Permanent address: Department of Biophysics, Warsaw University of Life Sciences SGGW, Bldg. 34, 159 Nowoursynowska St., 02776 Warsaw, Poland
| |
Collapse
|
43
|
Olivo M, Fu CY, Raghavan V, Lau WKO. New frontier in hypericin-mediated diagnosis of cancer with current optical technologies. Ann Biomed Eng 2011; 40:460-73. [PMID: 22124793 PMCID: PMC3281199 DOI: 10.1007/s10439-011-0462-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2011] [Accepted: 11/01/2011] [Indexed: 12/12/2022]
Abstract
Photosensitizers (PSs) have shown great potentials as molecular contrast agents in photodynamic diagnosis (PDD) of cancer. While the diagnostic values of PSs have been proven previously, little efforts have been put into developing optical imaging and diagnostic algorithms. In this article, we review the recent development of optical probes that have been used in conjunction with a potent PS, hypericin (HY). Various fluorescence techniques such as laser confocal microscopy, fluorescence urine cytology, endoscopy and endomicroscopy are covered. We will also discuss about image processing and classification approaches employed for accurate PDD. We anticipate that continual efforts in these developments could lead to an objective PDD and complete surgical clearance of tumors. Recent advancements in nanotechnology have also opened new horizons for PSs. The use of biocompatible gold nanoparticles as carrier for enhanced targeted delivery of HY has been attained. In addition, plasmonic properties of nanoparticles were harnessed to induce localized hyperthermia and to manage the release of PS molecules, enabling a better therapeutic outcome of a combined photodynamic and photothermal therapy. Finally, we discuss how nanoparticles can be used as contrast agents for other optical techniques such as optical coherence tomography and surface-enhanced Raman scattering imaging.
Collapse
Affiliation(s)
- Malini Olivo
- School of Physics, National University of Ireland, Galway, Ireland.
| | | | | | | |
Collapse
|
44
|
Mehta KB, Chen N. Plasmonic chiral contrast agents for optical coherence tomography: numerical study. OPTICS EXPRESS 2011; 19:14903-14912. [PMID: 21934851 DOI: 10.1364/oe.19.014903] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Optical coherence tomography (OCT) is a widely used morphological imaging modality. Various contrast agents, which change localized optical properties, are used to extend the applicability of OCT, where intrinsic contrast is not sufficient. In this paper we propose the use of a dual-rod gold nano-structure as a polarization sensitive contrast agent. Using numerical simulation, we demonstrated that the proposed structure has tunable chiral response. Enhanced cross-section due to Plasmon resonance in gold nanoparticles, along with the chiral behavior can provide enhanced detection sensitivity. The proposed contrast agents may extend the applicability of OCT to the problems that require the molecular contrast with enhanced sensitivity.
Collapse
Affiliation(s)
- Kalpesh B Mehta
- Optical Bioimaging Lab, Division of Bioengineering, National University of Singapore, 7 Engineering Drive 1, Blk E3A, 04-15, Singapore 117574, Singapore.
| | | |
Collapse
|
45
|
Advances in bio-optical imaging for the diagnosis of early oral cancer. Pharmaceutics 2011; 3:354-78. [PMID: 24310585 PMCID: PMC3857071 DOI: 10.3390/pharmaceutics3030354] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2011] [Accepted: 06/27/2011] [Indexed: 12/20/2022] Open
Abstract
Oral cancer is among the most common malignancies worldwide, therefore early detection and treatment is imperative. The 5-year survival rate has remained at a dismal 50% for the past several decades. The main reason for the poor survival rate is the fact that most of the oral cancers, despite the general accessibility of the oral cavity, are not diagnosed until the advanced stage. Early detection of the oral tumors and its precursor lesions may be the most effective means to improve clinical outcome and cure most patients. One of the emerging technologies is the use of non-invasive in vivo tissue imaging to capture the molecular changes at high-resolution to improve the detection capability of early stage disease. This review will discuss the use of optical probes and highlight the role of optical imaging such as autofluorescence, fluorescence diagnosis (FD), laser confocal endomicroscopy (LCE), surface enhanced Raman spectroscopy (SERS), optical coherence tomography (OCT) and confocal reflectance microscopy (CRM) in early oral cancer detection. FD is a promising method to differentiate cancerous lesions from benign, thus helping in the determination of adequate resolution of surgical resection margin. LCE offers in vivo cellular imaging of tissue structures from surface to subsurface layers and has demonstrated the potential to be used as a minimally invasive optical biopsy technique for early diagnosis of oral cancer lesions. SERS was able to differentiate between normal and oral cancer patients based on the spectra acquired from saliva of patients. OCT has been used to visualize the detailed histological features of the oral lesions with an imaging depth down to 2–3 mm. CRM is an optical tool to noninvasively image tissue with near histological resolution. These comprehensive diagnostic modalities can also be used to define surgical margin and to provide a direct assessment of the therapeutic effectiveness.
Collapse
|
46
|
Marschall S, Sander B, Mogensen M, Jørgensen TM, Andersen PE. Optical coherence tomography-current technology and applications in clinical and biomedical research. Anal Bioanal Chem 2011; 400:2699-720. [PMID: 21547430 DOI: 10.1007/s00216-011-5008-1] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2010] [Revised: 03/25/2011] [Accepted: 04/08/2011] [Indexed: 12/21/2022]
Abstract
Optical coherence tomography (OCT) is a noninvasive imaging technique that provides real-time two- and three-dimensional images of scattering samples with micrometer resolution. By mapping the local reflectivity, OCT visualizes the morphology of the sample. In addition, functional properties such as birefringence, motion, or the distributions of certain substances can be detected with high spatial resolution. Its main field of application is biomedical imaging and diagnostics. In ophthalmology, OCT is accepted as a clinical standard for diagnosing and monitoring the treatment of a number of retinal diseases, and OCT is becoming an important instrument for clinical cardiology. New applications are emerging in various medical fields, such as early-stage cancer detection, surgical guidance, and the early diagnosis of musculoskeletal diseases. OCT has also proven its value as a tool for developmental biology. The number of companies involved in manufacturing OCT systems has increased substantially during the last few years (especially due to its success in opthalmology), and this technology can be expected to continue to spread into various fields of application.
Collapse
Affiliation(s)
- Sebastian Marschall
- DTU Fotonik, Department of Photonics Engineering, Technical University of Denmark, Roskilde, Denmark
| | | | | | | | | |
Collapse
|
47
|
Abstract
Biological imaging applications often employ molecular probes or nanoparticles for enhanced contrast. However, resolution and detection are still often limited by the intrinsic heterogeneity of the sample, which can produce high levels of background that obscure the signals of interest. Herein, we describe approaches to overcome this obstacle based on the concept of dynamic contrast: a strategy for elucidating signals by the suppression or removal of background noise. Dynamic contrast mechanisms can greatly reduce the loading requirement of contrast agents, and may be especially useful for single-probe imaging. Dynamic contrast modalities are also platform-independent, and can enhance the performance of sophisticated biomedical imaging systems or simple optical microscopes alike. Dynamic contrast is performed in two stages: 1) a signal modulation scheme to introduce time-dependent changes in amplitude or phase, and 2) a demodulation step for signal recovery. Optical signals can be coupled with magnetic nanoparticles, photoswitchable probes, or plasmon-resonant nanostructures for modulation by magnetomotive, photonic, or photothermal mechanisms, respectively. With respect to image demodulation, many of the strategies developed for signal processing in electronics and communication technologies can also be applied toward the editing of digital images. The image-processing step can be as simple as differential imaging, or may involve multiple reference points for deconvolution by using cross-correlation algorithms. Periodic signals are particularly amenable to image demodulation strategies based on Fourier transform; the contrast of the demodulated signal increases with acquisition time, and modulation frequencies in the kHz range are possible. Dynamic contrast is an emerging topic with considerable room for development, both with respect to molecular or nanoscale probes for signal modulation, and also to methods for more efficient image processing and editing.
Collapse
Affiliation(s)
| | - Alexander Wei
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN, 47907-2084 (USA)
| |
Collapse
|
48
|
Gordon AY, Jayagopal A. Engineering of Nanoscale Contrast Agents for Optical Coherence Tomography. ACTA ACUST UNITED AC 2011; Suppl 5:004. [PMID: 25009761 DOI: 10.4172/2157-7439.s5-004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Optical coherence tomography has emerged as valuable imaging modalityin ophthalmology and other fields by enabling high-resolution three-dimensional imaging of tissue. In this paper, we review recent progress in the field of contrast-enhanced optical coherence tomography (OCT). We discuss exogenous and endogenous sources of OCT contrast, focusing on their use with standard OCT systems as well as emerging OCT-based imaging modalities. We include advances in the processing of OCT data that generate improved tissue contrast, including spectroscopic OCT (SOCT), as well as work utilizing secondary light sources and/or detection mechanisms to create and detect enhanced contrast, including photothermal OCT (PTOCT) and photoacoustic OCT (PAOCT). Finally, we conclude with a discussion of the translational potential of these developments as well as barriers to their clinical use.
Collapse
Affiliation(s)
- Andrew Y Gordon
- Department of Molecular Physiology and Biophysics, Vanderbilt University Medical Center, USA
| | - Ashwath Jayagopal
- Department of Molecular Physiology and Biophysics, Vanderbilt University Medical Center, USA ; Vanderbilt Eye Institute, Vanderbilt University Medical Center, USA
| |
Collapse
|
49
|
Khanadeev VA, Khlebtsov BN, Staroverov SA, Vidyasheva IV, Skaptsov AA, Ileneva ES, Bogatyrev VA, Dykman LA, Khlebtsov NG. Quantitative cell bioimaging using gold-nanoshell conjugates and phage antibodies. JOURNAL OF BIOPHOTONICS 2011; 4:74-83. [PMID: 20196025 DOI: 10.1002/jbio.200900093] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2009] [Revised: 02/09/2010] [Accepted: 02/11/2010] [Indexed: 05/28/2023]
Abstract
The authors describe a quantitative evaluation of the efficacy of cell labeling with plasmon-resonant light-scattering nanoparticles used as contrast agents for dark-field microscopy imaging. The experimental model is based on the biospecific labeling of pig embryo kidney (SPEV) cells with primary phage antibodies, followed by the dark-field microscopic visualization using conjugates of silica/gold nanoshells with secondary rabbit antiphage antibodies. To quantify nanoparticle binding, the authors introduce the labeling-efficacy factor (LEF) which is equal to the ratio of the bound-particle pixels per cell to the total number of pixels occupied by the cell. The LEF is calculated by an imaging-analysis algorithm based on the freely available ImageJ Java-based processing code. In terms of the LEF, a distinct difference was found between intact, nonspecifically labeled, and biospecifically labeled cells.
Collapse
Affiliation(s)
- Vitaly A Khanadeev
- Department of Biophysics, Saratov State University, 83 Ulitsa Astrakhanskaya, Saratov 410012, Russia
| | | | | | | | | | | | | | | | | |
Collapse
|
50
|
Stobiecka M, Hepel M. Multimodal coupling of optical transitions and plasmonic oscillations in rhodamine B modified gold nanoparticles. Phys Chem Chem Phys 2010; 13:1131-9. [PMID: 21072434 DOI: 10.1039/c0cp00553c] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The optical properties of a photoluminescent dye rhodamine B (RhB) interacting with gold nanoparticles (AuNP) have been investigated using plasmonic absorbance, fluorescence, and resonance elastic light scattering (RELS) spectroscopy. We have found that these interactions result in a multimodal coupling that influence optical transitions in RhB. In absorbance measurements, we have observed for the first time the coupling resulting in strong screening of RhB π-π* transitions, likely caused by a contact adsorption of RhB on a conductive surface of AuNP. The nanoparticles quench also very efficiently the RhB fluorescence. We have determined that the static quenching mechanism with a non-Förster fluorescence resonance energy transfer (FRET) from RhB molecules to AuNP is involved. The Stern-Volmer dependence F(0)/F = f(Q) shows an upward deviation from linearity, attributed to the ultra-high quenching efficiency of AuNP leading to the new extended Stern-Volmer model. A sharp RELS peak of RhB alone (λ(max) = 566 nm) has been observed for the first time and attributed to the resonance fluorescence and enhanced scattering. This peak is completely quenched in the presence of AuNP(22nm). Our quantum mechanical calculations confirm that the distance between AuNP surface and conjugated π-electron system in RhB is well within the range of plasmonic fields extending from AuNP. The optical transition coupling to plasmonic oscillations and the efficient energy transfer due to the interactions of fluorescent dyes with nanoparticles are important for biophysical studies of life processes and applications in nanomedicine.
Collapse
Affiliation(s)
- Magdalena Stobiecka
- Department of Chemistry, State University of New York at Potsdam, Potsdam, NY 13676, USA
| | | |
Collapse
|