151
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Maynard J, Hart P. The Opportunities and Use of Imaging to Measure Target Engagement. SLAS DISCOVERY 2019; 25:127-136. [PMID: 31885303 DOI: 10.1177/2472555219897270] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Lack of efficacy and poor safety outcomes are deemed to be the greatest causes of clinical failure of novel therapeutics. The use of biomarkers that give accurate information on target engagement, providing confidence that pharmacological activity in the target organ is being achieved, is key in optimizing clinical success. Without a measurement of target engagement, it can be very difficult to discern the basis for any lack of efficacy of a drug molecule within the pharmaceutical industry. Target engagement can be measured in both an in vitro and in vivo setting, and in recent years imaging measurements have been used frequently in drug discovery and development to assess target engagement and receptor occupancy in both human and animal models. From this perspective, we assess and look at the advancements in both in vivo and ex vivo imaging to demonstrate the enormous potential that imaging has as an application to provide a greater understanding of target engagement with a correlative therapeutic impact.
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Affiliation(s)
| | - Philippa Hart
- Medicines Discovery Catapult, Alderley Park, Cheshire, UK
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152
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Jnawali K, Chinni B, Dogra V, Rao N. Automatic cancer tissue detection using multispectral photoacoustic imaging. Int J Comput Assist Radiol Surg 2019; 15:309-320. [PMID: 31865531 DOI: 10.1007/s11548-019-02101-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 11/28/2019] [Indexed: 01/21/2023]
Abstract
PURPOSE In the case of multispecimen study to locate cancer regions, such as in thyroidectomy and prostatectomy, a significant labor-intensive processing is required at a high cost. Pathology diagnosis is usually done by a pathologist observing tissue-stained glass slide under a microscope. METHOD Multispectral photoacoustic (MPA) specimen imaging has proven successful in differentiating photoacoustic (PA) signal characteristics between a histopathology-defined cancer region and normal tissue. This is mainly due to its ability to efficiently map oxyhemoglobin and deoxyhemoglobin contents from MPA images and key features for cancer detection. A fully automated deep learning algorithm is purposed, which learns to detect the presence of malignant tissue in freshly excised ex vivo human thyroid and prostate tissue specimens using the three-dimensional MPA dataset. The proposed automated deep learning model consisted of the convolutional neural network architecture, which extracts spatially colocated features, and a softmax function, which detects thyroid and prostate cancer tissue at once. This is one of the first deep learning models, to the best of our knowledge, to detect the presence of cancer in excised thyroid and prostate tissue of humans at once based on PA imaging. RESULT The area under the curve (AUC) was used as a metric to evaluate the predictive performance of the classifier. The proposed model detected the cancer tissue with the AUC of 0.96, which is very promising. CONCLUSION This model is an improvement over the previous work using machine learning and deep learning algorithms. This model may have immediate application in cancer screening of the numerous sliced specimens that result from thyroidectomy and prostatectomy. Since the instrument that was used to capture the ex vivo PA images is now being developed for in vivo use, this model may also prove to be a starting point for in vivo PA image analysis for cancer diagnosis.
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Affiliation(s)
- Kamal Jnawali
- Rochester Institute of Technology, Rochester, NY, USA.
| | | | | | - Navalgund Rao
- Rochester Institute of Technology, Rochester, NY, USA
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153
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Laffey MK, Kubelick KP, Donnelly EM, Emelianov SY. Effects of Freezing on Mesenchymal Stem Cells Labeled with Gold Nanoparticles. Tissue Eng Part C Methods 2019; 26:1-10. [PMID: 31724492 DOI: 10.1089/ten.tec.2019.0198] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Stem cell therapies are a promising treatment for many patients suffering from diseases with poor prognosis. However, clinical translation is inhibited by a lack of in vivo monitoring techniques to track stem cells throughout the course of treatment. Ultrasound-guided photoacoustic (PA) imaging of nanoparticle-labeled stem cells may be a solution. To allow PA tracking, stem cells must be labeled with an optically absorbing contrast agent. Gold nanoparticles are one option due to their cytocompatibility and strong optical absorption in the near-infrared region. However, stem cell labeling can require up to 24-h incubation with nanoparticles in culture before use. Although stem cell monitoring is critically needed, the additional preparation time may not be feasible-it is cost prohibitive and stem cell treatments should be readily available in emergency situations as well as scheduled procedures. To remedy this, stem cells can be labeled before freezing and long-term storage. While it is well known that stem cells retain their cellular function after freezing, storage, and thawing, the impact of gold nanoparticles on this process has yet to be investigated. Therefore, we assessed the viability, multipotency, and PA activity of gold nanosphere-labeled mesenchymal stem cells (MSCs) after freezing, storing, and thawing for 1 week, 1 month, or 2 months and compared to unlabeled, naive MSCs which were frozen, stored, and thawed at the same time points. Results indicated no substantial change in viability as assessed by the MTT assay. Differentiation, observed through adipogenesis and osteogenesis, was also comparable to controls. Finally, strong PA signals and similar PA spectral signatures remained. Further studies involving more diverse stem cell types and nanoparticles are required, but our data suggest that function and imaging properties of nanoparticle-labeled stem cells are maintained after freezing and storage, which improve translation of stem cell monitoring techniques by simplifying integration with clinical protocols. Impact statement Although stem cell tracking techniques are critically needed, stem cells must be labeled with contrast agents in advance of procedures, which is not clinically feasible due to increased procedure time. As a solution, a stock of labeled stem cells could be frozen and stored, ready for immediate use. Results showed that gold nanosphere-labeled stem cells can be frozen and stored long-term without impacting cellular function or photoacoustic imaging contrast, supporting further investigation of other contrast agents and cell types. Creating a bank of nanoparticle-labeled stem cells advances translation and scalability of stem cell tracking methods by improving integration with clinical protocols.
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Affiliation(s)
- Makenna K Laffey
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, Georgia
| | - Kelsey P Kubelick
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, Georgia
| | - Eleanor M Donnelly
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, Georgia
| | - Stanislav Y Emelianov
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, Georgia.,School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, Georgia
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154
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Lin Y, Sun L, Zeng F, Wu S. An Unsymmetrical Squaraine-Based Activatable Probe for Imaging Lymphatic Metastasis by Responding to Tumor Hypoxia with MSOT and Aggregation-Enhanced Fluorescent Imaging. Chemistry 2019; 25:16740-16747. [PMID: 31674063 DOI: 10.1002/chem.201904675] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Revised: 10/30/2019] [Indexed: 02/06/2023]
Abstract
Optoacoustic imaging has great potential for preclinical research and clinical practice, and designing robust activatable optoacoustic probes for specific diseases is beneficial for its further development. Herein, an activatable probe has been developed for tumor hypoxia imaging. For this probe, indole and quinoline were linked on each side of an oxocyclobutenolate core to form an unsymmetrical squaraine. A triarylamine group was incorporated to endow the molecule with the aggregation enhanced emission (AEE) properties. In aqueous media, the squaraine chromophore aggregates into the nanoprobe, which specifically responds to nitroreductase and produces strong optoacoustic signals due to its high extinction coefficient, as well as prominent fluorescence emission as a result of its AEE feature. The nanoprobe was used to image tumor metastasis via the lymphatic system both optoacoustically and fluorescently. Moreover, both the fluorescence signals and three-dimensional multispectral optoacoustic tomography signals from the activated nanoprobe allow us to locate the tumor site and to map the metastatic route.
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Affiliation(s)
- Yi Lin
- State Key Laboratory of Luminescent Materials and Devices, Key Laboratory of Luminescence from Molecular Aggregates of, Guangdong Province, College of Materials Science and Engineering, South China University of Technology, Wushan Road 381, Guangzhou, 510640, P. R. China
| | - Lihe Sun
- State Key Laboratory of Luminescent Materials and Devices, Key Laboratory of Luminescence from Molecular Aggregates of, Guangdong Province, College of Materials Science and Engineering, South China University of Technology, Wushan Road 381, Guangzhou, 510640, P. R. China
| | - Fang Zeng
- State Key Laboratory of Luminescent Materials and Devices, Key Laboratory of Luminescence from Molecular Aggregates of, Guangdong Province, College of Materials Science and Engineering, South China University of Technology, Wushan Road 381, Guangzhou, 510640, P. R. China
| | - Shuizhu Wu
- State Key Laboratory of Luminescent Materials and Devices, Key Laboratory of Luminescence from Molecular Aggregates of, Guangdong Province, College of Materials Science and Engineering, South China University of Technology, Wushan Road 381, Guangzhou, 510640, P. R. China
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155
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Meng Z, Zhou X, She J, Zhang Y, Feng L, Liu Z. Ultrasound-Responsive Conversion of Microbubbles to Nanoparticles to Enable Background-Free in Vivo Photoacoustic Imaging. NANO LETTERS 2019; 19:8109-8117. [PMID: 31597418 DOI: 10.1021/acs.nanolett.9b03331] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Photoacoustic (PA) imaging based on the photon-to-ultrasound conversion allows the imaging of optical absorbers in deep tissues with high spatial resolution. However, the inherent optical absorbance of biomolecules (e.g., hemoglobin, melanin, etc.) would show up as tissue background signals to interfere with signals from the contrast agent during in vivo PA imaging, limiting the imaging sensitivity. Herein, an ultrasound (US)-responsive PA imaging probe based on microbubbles (MBs) containing gold nanoparticles (Au NPs) is designed for in vivo "background-free" PA imaging. The obtained Au@lip MBs with separated Au NPs decorated within the lipid shell of MBs show low PA signals under near-infrared (NIR) excitation. Interestingly, under exposure to US pulses, those Au@lip MBs would burst to form nanoscale aggregates of Au@lip NPs, which exhibit significantly enhanced NIR PA signals due to their red-shifted surface plasmon resonance. Therefore, by subtracting the PA image captured pre-US burst from that captured post-US burst, the tissue background PA signals could be deducted to enable background-free PA imaging with high sensitivities as demonstrated by multiple ex vivo and in vivo experiments. This work presents a simple yet effective strategy to deduct background signals during PA imaging, which is promising for accurate PA detection of targets in tissues with a strong background.
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Affiliation(s)
- Zhouqi Meng
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices , Soochow University , Suzhou , Jiangsu 215123 , China
| | - Xuanfang Zhou
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices , Soochow University , Suzhou , Jiangsu 215123 , China
| | - Jialin She
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices , Soochow University , Suzhou , Jiangsu 215123 , China
| | - Yaojia Zhang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices , Soochow University , Suzhou , Jiangsu 215123 , China
| | - Liangzhu Feng
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices , Soochow University , Suzhou , Jiangsu 215123 , China
| | - Zhuang Liu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices , Soochow University , Suzhou , Jiangsu 215123 , China
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156
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Sun L, Jiao X, Liu W, Wang Y, Cao Y, Bao SJ, Xu Z, Kang Y, Xue P. Novel Oxygen-Deficient Zirconia (ZrO 2-x) for Fluorescence/Photoacoustic Imaging-Guided Photothermal/Photodynamic Therapy for Cancer. ACS APPLIED MATERIALS & INTERFACES 2019; 11:41127-41139. [PMID: 31610123 DOI: 10.1021/acsami.9b16604] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Theranostic nanoplatforms that integrate therapy and diagnosis in a single composite have become increasingly attractive in the field of precise and efficient tumor treatment. Herein, a novel oxygen-deficient zirconia (ZrO2-x) nanosystem based on the conjugation of thiol-polyethylene glycol-amine (SH-PEG-NH2) and chlorin e6 (Ce6) was elaborately designed and established for efficacious photothermal/photodynamic therapy (PTT/PDT) and fluorescence/photoacoustic (FL/PA) bimodal imaging for the first time. The crystalline-disordered, PEGylated ZrO2-x nanoparticles (ZP NPs) displayed strong optical absorption in the near-infrared (NIR) window and were featured with significant photothermal conversion capacity. The ZP NPs were further covalently conjugated with Ce6 to form ZrO2-x@PEG/Ce6 (ZPC) NPs, which displayed a long circulatory half-life, efficient tumor accumulation, and outstanding FL/PA imaging performance. Moreover, the nanocomposites effectively generated cytotoxic intracellular reactive oxygen species (ROS) responsive to laser activation. Both cell studies and animal experiments explicitly demonstrated that ZPC NPs mediated remarkable tumor ablation with minimal systemic toxicity thanks to their tumor-specific PTT/PDT effect. Collectively, these findings may open up new avenues to broaden the application of oxygen-deficient ZrO2-x nanostructures as high-performance photothermal agents in tumor theranostics through rational design and accurate control of their physiochemical properties.
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Affiliation(s)
- Lihong Sun
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, School of Materials and Energy , Southwest University , Chongqing 400715 , China
- Chongqing Engineering Research Center for Micro-Nano Biomedical Materials and Devices , Southwest University , Chongqing 400715 , China
| | - Xiaodan Jiao
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, School of Materials and Energy , Southwest University , Chongqing 400715 , China
- Chongqing Engineering Research Center for Micro-Nano Biomedical Materials and Devices , Southwest University , Chongqing 400715 , China
| | - Weiwei Liu
- Chongqing Key Laboratory of Ultrasound Molecular Imaging, Institute of Ultrasound Imaging, Second Affiliated Hospital , Chongqing Medical University , Chongqing 400010 , China
| | - Ying Wang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, School of Materials and Energy , Southwest University , Chongqing 400715 , China
| | - Yang Cao
- Chongqing Key Laboratory of Ultrasound Molecular Imaging, Institute of Ultrasound Imaging, Second Affiliated Hospital , Chongqing Medical University , Chongqing 400010 , China
| | - Shu-Juan Bao
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, School of Materials and Energy , Southwest University , Chongqing 400715 , China
| | - Zhigang Xu
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, School of Materials and Energy , Southwest University , Chongqing 400715 , China
- Chongqing Engineering Research Center for Micro-Nano Biomedical Materials and Devices , Southwest University , Chongqing 400715 , China
| | - Yuejun Kang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, School of Materials and Energy , Southwest University , Chongqing 400715 , China
- Chongqing Engineering Research Center for Micro-Nano Biomedical Materials and Devices , Southwest University , Chongqing 400715 , China
| | - Peng Xue
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, School of Materials and Energy , Southwest University , Chongqing 400715 , China
- Chongqing Engineering Research Center for Micro-Nano Biomedical Materials and Devices , Southwest University , Chongqing 400715 , China
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157
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Dangi A, Agrawal S, Kothapalli SR. Lithium niobate-based transparent ultrasound transducers for photoacoustic imaging. OPTICS LETTERS 2019; 44:5326-5329. [PMID: 31674999 DOI: 10.1364/ol.44.005326] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 10/01/2019] [Indexed: 06/10/2023]
Abstract
This Letter demonstrates lithium niobate (LiNbO3)-based transparent ultrasound transducers (TUTs) for photoacoustic imaging applications. The TUTs were fabricated by coating the top and bottom surfaces of a 0.25 mm thick LiNbO3wafer with transparent indium-tin-oxide (ITO) electrodes. The resulting transducers showed ∼80% optical transparency in the wavelength range of 690-970 nm. The TUTs had a resonant frequency of 14.5 MHz and ∼70% photoacoustic bandwidth. The versatility of the TUT approach is demonstrated by introducing two different transparent photoacoustic imaging (PAI) geometries. In one method, which suits endoscopy applications, an optical fiber of a laser diode is directly fixed on the backside of a 2.5 mm diameter TUT, and the fiber-TUT device is raster scanned to form 3D photoacoustic images. In the second method, which suits high-throughput applications, a free-space optical-only raster scanning of the laser fiber across a 1 cm×1 cm planar TUT yielded 3D photoacoustic images. The proposed TUT approach is low in cost, easy to manufacture, compatible with conventional clinical ultrasound electronics, and scalable for different configurations, including 2D TUT arrays to achieve real-time 3D high-throughput PAI.
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158
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Rich LJ, Chamberlain SR, Falcone DR, Bruce R, Heinmiller A, Xia J, Seshadri M. Performance Characteristics of Photoacoustic Imaging Probes with Varying Frequencies and Light-delivery Schemes. ULTRASONIC IMAGING 2019; 41:319-335. [PMID: 31570083 PMCID: PMC7042667 DOI: 10.1177/0161734619879043] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Photoacoustic imaging (PAI) is an emerging biomedical imaging technique that utilizes a combination of light and ultrasound to detect photoabsorbers embedded within tissues. While the clinical utility of PAI has been widely explored for several applications, limitations in light penetration and detector sensitivity have restricted these studies to mostly superficial sites. Given the importance of PA signal generation and detection on light delivery and ultrasound detector frequency, there is an ongoing effort to optimize these parameters to enhance photoabsorber detection at increased depths. With this in mind, in this study we examined performance benchmarks of a commercially available PAI/ultrasound linear array system when using different imaging frequencies and light delivery schemes. A modified light fiber jacket providing focused light delivery (FLD) at the center of the probe was compared with the built-in fiber optics lining the length of the probe. Studies were performed in vitro to compare performance characteristics such as imaging resolution, maximum imaging depth, and sensitivity to varying hematocrit concentration for each frequency and light delivery method. Monte Carlo simulations of each light delivery method revealed increased light penetration with FLD. In tissue-mimicking phantoms, vascular channels used to simulate blood vessels could be visualized at a depth of 2.4 cm when lowering imaging frequency and utilizing FLD. Imaging at lower frequencies with FLD also enabled enhanced detection of varying hematocrit concentration levels at increased depths, although lateral imaging resolution was reduced. Finally, a proof of concept in vivo probe comparison study in a mouse tumor model provided supportive evidence of our in vitro results. Collectively, our findings show that adjusting imaging frequency and applying FLD can be a straightforward approach for improving PAI performance.
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Affiliation(s)
- Laurie J Rich
- Laboratory for Translational Imaging, Department of Molecular and Cellular Biophysics and Biochemistry, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA
- Department of Oral Oncology, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA
| | - Sarah R Chamberlain
- Laboratory for Translational Imaging, Department of Molecular and Cellular Biophysics and Biochemistry, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA
| | - Daniela R Falcone
- Department of Oral Oncology, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA
| | - Robert Bruce
- Department of Oral Oncology, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA
- Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York, NY, USA
| | | | - Jun Xia
- Department of Biomedical Engineering, Jacobs School of Medicine & Biomedical Sciences, University at Buffalo, Buffalo, NY, USA
| | - Mukund Seshadri
- Laboratory for Translational Imaging, Department of Molecular and Cellular Biophysics and Biochemistry, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA
- Department of Oral Oncology, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA
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159
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Zhen X, Jiang X. Polymer‐based activatable optical probes for tumor fluorescence and photoacoustic imaging. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2019; 12:e1593. [DOI: 10.1002/wnan.1593] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 08/19/2019] [Accepted: 08/29/2019] [Indexed: 01/09/2023]
Affiliation(s)
- Xu Zhen
- Department of Polymer Science and Engineering, College of Chemistry and Chemical Engineering Nanjing University Nanjing China
| | - Xiqun Jiang
- Department of Polymer Science and Engineering, College of Chemistry and Chemical Engineering Nanjing University Nanjing China
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160
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Cavigli L, Centi S, Borri C, Tortoli P, Panettieri I, Streit I, Ciofini D, Magni G, Rossi F, Siano S, Ratto F, Pini R. 1064-nm-resonant gold nanorods for photoacoustic theranostics within permissible exposure limits. JOURNAL OF BIOPHOTONICS 2019; 12:e201900082. [PMID: 31155855 DOI: 10.1002/jbio.201900082] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 05/03/2019] [Accepted: 05/30/2019] [Indexed: 05/07/2023]
Abstract
Therapeutic and diagnostic methods based on photomechanical effects are attracting much current attention in contexts as oncology, cardiology and vascular surgery, for such applications as photoacoustic imaging or microsurgery. Their underlying mechanism is the generation of ultrasound or cavitation from the interaction of short optical pulses with endogenous dyes or targeted contrast agents. Among the latter, gold nanorods are outstanding candidates, but their use has mainly been reported for photoacoustic imaging and photothermal treatments. Conversely, much less is still known about their value as a precision tool for photomechanical manipulations, such as to impart local damage with high spatial resolution through the expansion and collapse of microbubbles. Here, we address the feasibility of gold nanorods exhibiting a distribution of surface plasmon resonances between about 900 to above 1100 nm as a contrast agent for photoacoustic theranostics. After testing their cytotoxicity and cellular uptake, we discuss their photostability and use to mediate cavitation and the photomechanical destruction of targeted cells. We find that the choice of a plasmonic band peaking around 1064 nm is key to enhance the translational potential of this approach. With respect to the standard alternative of 800 nm, at 1064 nm, relevant regulations on optical exposure are less restrictive and the photonic technology is more mature.
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Affiliation(s)
- Lucia Cavigli
- Istituto di Fisica Applicata 'Nello Carrara', Consiglio Nazionale delle Ricerche IFAC-CNR, Sesto Fiorentino, Italy
| | - Sonia Centi
- Istituto di Fisica Applicata 'Nello Carrara', Consiglio Nazionale delle Ricerche IFAC-CNR, Sesto Fiorentino, Italy
| | - Claudia Borri
- Istituto di Fisica Applicata 'Nello Carrara', Consiglio Nazionale delle Ricerche IFAC-CNR, Sesto Fiorentino, Italy
| | - Paolo Tortoli
- Dipartimento di Fisica e Astronomia, Università degli Studi di Firenze, Sesto Fiorentino, Italy
| | - Ilaria Panettieri
- Dipartimento di Ingegneria Meccanica e Aerospaziale, Politecnico di Torino, Torino, Italy
| | | | - Daniele Ciofini
- Istituto di Fisica Applicata 'Nello Carrara', Consiglio Nazionale delle Ricerche IFAC-CNR, Sesto Fiorentino, Italy
| | - Giada Magni
- Istituto di Fisica Applicata 'Nello Carrara', Consiglio Nazionale delle Ricerche IFAC-CNR, Sesto Fiorentino, Italy
| | - Francesca Rossi
- Istituto di Fisica Applicata 'Nello Carrara', Consiglio Nazionale delle Ricerche IFAC-CNR, Sesto Fiorentino, Italy
| | - Salvatore Siano
- Istituto di Fisica Applicata 'Nello Carrara', Consiglio Nazionale delle Ricerche IFAC-CNR, Sesto Fiorentino, Italy
| | - Fulvio Ratto
- Istituto di Fisica Applicata 'Nello Carrara', Consiglio Nazionale delle Ricerche IFAC-CNR, Sesto Fiorentino, Italy
| | - Roberto Pini
- Istituto di Fisica Applicata 'Nello Carrara', Consiglio Nazionale delle Ricerche IFAC-CNR, Sesto Fiorentino, Italy
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161
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Deán-Ben XL, Razansky D. Optoacoustic image formation approaches-a clinical perspective. Phys Med Biol 2019; 64:18TR01. [PMID: 31342913 DOI: 10.1088/1361-6560/ab3522] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Clinical translation of optoacoustic imaging is fostered by the rapid technical advances in imaging performance as well as the growing number of clinicians recognizing the immense diagnostic potential of this technology. Clinical optoacoustic systems are available in multiple configurations, including hand-held and endoscopic probes as well as raster-scan approaches. The hardware design must be adapted to the accessible portion of the imaged region and other application-specific requirements pertaining the achievable depth, field of view or spatio-temporal resolution. Equally important is the adequate choice of the signal and image processing approach, which is largely responsible for the resulting imaging performance. Thus, new image reconstruction algorithms are constantly evolving in parallel to the newly-developed set-ups. This review focuses on recent progress on optoacoustic image formation algorithms and processing methods in the clinical setting. Major reconstruction challenges include real-time image rendering in two and three dimensions, efficient hybridization with other imaging modalitites as well as accurate interpretation and quantification of bio-markers, herein discussed in the context of ongoing progress in clinical translation.
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Affiliation(s)
- Xosé Luís Deán-Ben
- Faculty of Medicine and Institute of Pharmacology and Toxicology, University of Zurich, Zurich, Switzerland. Department of Information Technology and Electrical Engineering and Institute for Biomedical Engineering, ETH Zurich, Zurich, Switzerland
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162
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Aziz A, Medina-Sánchez M, Claussen J, Schmidt OG. Real-Time Optoacoustic Tracking of Single Moving Micro-objects in Deep Phantom and Ex Vivo Tissues. NANO LETTERS 2019; 19:6612-6620. [PMID: 31411038 DOI: 10.1021/acs.nanolett.9b02869] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Medical imaging plays an important role in diagnosis and treatment of multiple diseases. It is a field which seeks for improved sensitivity and spatiotemporal resolution to allow the dynamic monitoring of diverse biological processes that occur at the micro- and nanoscale. Emerging technologies for targeted diagnosis and therapy such as nanotherapeutics, microimplants, catheters, and small medical tools also need to be precisely located and monitored while performing their function inside the human body. In this work, we show for the first time the real-time tracking of moving single micro-objects below centimeter thick phantom tissue and ex vivo chicken breast, using multispectral optoacoustic tomography (MSOT). This technique combines the advantages of ultrasound imaging regarding depth and resolution with the molecular specificity of optical methods, thereby facilitating the discrimination between the spectral signatures of the micro-objects from those of intrinsic tissue molecules. The resulting MSOT signal is further improved in terms of contrast and specificity by coating the micro-objects' surface with gold nanorods, possessing a unique absorption spectrum, which facilitate their discrimination from surrounding biological tissues when translated to future in vivo settings.
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Affiliation(s)
- Azaam Aziz
- Institute for Integrative Nanosciences , Leibniz IFW Dresden , Helmholtzstraße 20 , 01069 Dresden , Germany
| | - Mariana Medina-Sánchez
- Institute for Integrative Nanosciences , Leibniz IFW Dresden , Helmholtzstraße 20 , 01069 Dresden , Germany
| | - Jing Claussen
- iThera Medical GmbH , Zielstattstraße 13 , 81379 Munich , Germany
| | - Oliver G Schmidt
- Institute for Integrative Nanosciences , Leibniz IFW Dresden , Helmholtzstraße 20 , 01069 Dresden , Germany
- Center for Materials, Architectures, and Integration of Nanomembranes (MAIN) , TU Chemnitz , Reichenhainer Straße 10 , 09107 Chemnitz , Germany
- School of Science , TU Dresden , 01062 Dresden , Germany
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163
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Wang S, Sheng Z, Yang Z, Hu D, Long X, Feng G, Liu Y, Yuan Z, Zhang J, Zheng H, Zhang X. Activatable Small‐Molecule Photoacoustic Probes that Cross the Blood–Brain Barrier for Visualization of Copper(II) in Mice with Alzheimer's Disease. Angew Chem Int Ed Engl 2019; 58:12415-12419. [DOI: 10.1002/anie.201904047] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 05/15/2019] [Indexed: 01/12/2023]
Affiliation(s)
- Shichao Wang
- Cancer Centre and Centre of Reproduction, Development and AgingFaculty of Health SciencesUniversity of Macau Macau SAR P. R. China
| | - Zonghai Sheng
- Paul C. Lauterbur Research Center for Biomedical ImagingInstitute of Biomedical and Health EngineeringShenzhen Institute of Advanced TechnologyChinese Academy of Sciences Shenzhen 518055 P. R. China
| | - Zhenguo Yang
- Affiliated Hospital of Guangdong Medical University Zhanjiang 524001 P. R. China
| | - Dehong Hu
- Paul C. Lauterbur Research Center for Biomedical ImagingInstitute of Biomedical and Health EngineeringShenzhen Institute of Advanced TechnologyChinese Academy of Sciences Shenzhen 518055 P. R. China
| | - Xiaojing Long
- Paul C. Lauterbur Research Center for Biomedical ImagingInstitute of Biomedical and Health EngineeringShenzhen Institute of Advanced TechnologyChinese Academy of Sciences Shenzhen 518055 P. R. China
| | - Gang Feng
- Cancer Centre and Centre of Reproduction, Development and AgingFaculty of Health SciencesUniversity of Macau Macau SAR P. R. China
| | - Yubin Liu
- Cancer Centre and Centre of Reproduction, Development and AgingFaculty of Health SciencesUniversity of Macau Macau SAR P. R. China
| | - Zhen Yuan
- Cancer Centre and Centre of Reproduction, Development and AgingFaculty of Health SciencesUniversity of Macau Macau SAR P. R. China
| | - Jingjing Zhang
- Affiliated Hospital of Guangdong Medical University Zhanjiang 524001 P. R. China
| | - Hairong Zheng
- Paul C. Lauterbur Research Center for Biomedical ImagingInstitute of Biomedical and Health EngineeringShenzhen Institute of Advanced TechnologyChinese Academy of Sciences Shenzhen 518055 P. R. China
| | - Xuanjun Zhang
- Cancer Centre and Centre of Reproduction, Development and AgingFaculty of Health SciencesUniversity of Macau Macau SAR P. R. China
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164
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Fadhel MN, Hysi E, Strohm EM, Kolios MC. Optical and photoacoustic radiofrequency spectroscopic analysis for detecting red blood cell death. JOURNAL OF BIOPHOTONICS 2019; 12:e201800431. [PMID: 31050867 DOI: 10.1002/jbio.201800431] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 04/30/2019] [Accepted: 05/02/2019] [Indexed: 05/15/2023]
Abstract
Under stress, red blood cells (RBCs) undergo programmed cell death (eryptosis). One of the signaling molecules for eryptosis, sphingomyelinase (SMase), plays an important role in monitoring the efficacy of vascular targeted cancer therapy. The high optical absorption of erythrocytes coupled with the changes of eryptotic RBCs makes RBCs ideal targets for the photoacoustic (PA) detection and characterization of vascular treatments. In this work, experiments characterizing eryptosis were performed: PA detection of high frequencies (>100 MHz) that enabled analysis at the single-cell level and of low frequencies (21 MHz) that enabled analysis at the RBC ensemble level. Ultrasound spectral analysis was performed on control and SMase-treated RBCs. Spectral unmixing was applied to quantify methemoglobin production as a by-product of RBC death. Validation was performed using a blood gas analyzer and optical spectrometry. Our results indicate that PA radiofrequency spectra could be used to differentiate the biochemically induced morphological changes as RBCs lose their native biconcave shape, and release hemoglobin into the surroundings. Spectral unmixing revealed a 7% increase in methemoglobin content for SMase-treated samples due to the oxidative stress on the RBCs. These findings suggest that PA spectral analysis of RBC death can potentially serve as a biomarker of the efficacy of vascular targeted cancer therapies.
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Affiliation(s)
- Muhannad N Fadhel
- Department of Physics, Ryerson University, Toronto, ON, Canada
- Institute for Biomedical Engineering, Science and Technology (iBEST), Toronto, ON, Canada
- Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Toronto, ON, Canada
| | - Eno Hysi
- Department of Physics, Ryerson University, Toronto, ON, Canada
- Institute for Biomedical Engineering, Science and Technology (iBEST), Toronto, ON, Canada
- Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Toronto, ON, Canada
| | - Eric M Strohm
- Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, ON, Canada
- Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, Toronto, ON, Canada
| | - Michael C Kolios
- Department of Physics, Ryerson University, Toronto, ON, Canada
- Institute for Biomedical Engineering, Science and Technology (iBEST), Toronto, ON, Canada
- Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Toronto, ON, Canada
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165
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Kirkham BM, Schultz SM, Ashi K, Sehgal CM. Assessment of Age-related Oxygenation Changes in Calf Skeletal Muscle by Photoacoustic Imaging: A Potential Tool for Peripheral Arterial Disease. ULTRASONIC IMAGING 2019; 41:290-300. [PMID: 31322030 DOI: 10.1177/0161734619862287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Peripheral artery disease is often asymptomatic, and various imaging and nonimaging techniques have been used for assessment and monitoring treatments. This study is designed to demonstrate the ability of photoacoustic imaging to noninvasively determine changes in tissue oxygenation that occur in mice's hind limb skeletal muscle as they age. Mice from two age cohorts were scanned bilaterally with a pulsed laser. The photoacoustic signal was unmixed to generate a parametric map of estimated oxygen saturation and then overlaid on grayscale ultrasound images. Tissue oxygenation measured in young and old mice was compared. Photoacoustic imaging visually and quantitatively showed the decrease in skeletal muscle oxygenation that occurs with age. Percent tissue oxygenation decreased from 30.2% to 3.5% (p < 0.05). This reduction corresponded to reduced fractional area of oxygenation, which decreased from 60.6% to 6.0% (p < 0.05). The change in oxygenation capacity of the still active vascular regions was insignificant (p > 0.05). Intrasubject, intra-, and interobserver comparisons showed low variability in measurements, exhibited by high regression and intraclass correlations exceeding 0.81 for all ages. The decrease in oxygenation detected by photoacoustic imaging paralleled the known oxygenation decrease observed in aging tissues, demonstrating that photoacoustic imaging can assess age-related changes in a mouse calf muscle. These intramuscular changes could potentially act as a strong diagnostic marker for peripheral artery disease. This study thus opens the doors for a novel, affordable, noninvasive method of evaluation free of radiation or exogenous material.
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Affiliation(s)
- Brooke M Kirkham
- Department of Radiology, University of Pennsylvania, Philadelphia, PA, USA
| | - Susan M Schultz
- Department of Radiology, University of Pennsylvania, Philadelphia, PA, USA
| | - Khalid Ashi
- Department of Radiology, University of Pennsylvania, Philadelphia, PA, USA
| | - Chandra M Sehgal
- Department of Radiology, University of Pennsylvania, Philadelphia, PA, USA
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166
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Basij M, Yan Y, Alshahrani SS, Helmi H, Burton TK, Burmeister JW, Dominello MM, Winer IS, Mehrmohammadi M. Miniaturized phased-array ultrasound and photoacoustic endoscopic imaging system. PHOTOACOUSTICS 2019; 15:100139. [PMID: 31388487 PMCID: PMC6677929 DOI: 10.1016/j.pacs.2019.100139] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 05/10/2019] [Accepted: 06/17/2019] [Indexed: 05/04/2023]
Abstract
Visualization and detection of early-stage gynecological malignancies represents a challenge for imaging due to limiting factors including tissue accessibility, device ease of use, and accuracy of imaging modalities. In this work, we introduce a miniaturized phased-array ultrasound and photoacoustic endoscopic probe which is capable of providing structural, functional, and molecular data for the characterization of gynecologic disease. The proposed probe consists of a 64-element ultrasound phased-array transducer coupled to a fiber-optic light delivery system for co-registered ultrasound and photoacoustic imaging. The fabricated US and PA imaging endoscope's diameter is 7.5 mm, allowing for potential passage through the cervical canal and thus an intimate contact with gynecological tissues such as the cervical canal and uterus. The developed endoscopic probe was tested and characterized in a set of tissue-mimicking phantoms. US and PA resolutions were measured experimentally using 200 μm diameter wires, resulting in apparent axial and lateral diameters of 289 μm and 299 μm for US, and 308 μm and 378 μm for PA, respectively. The probe's abilities to operate in both discrete and integrated illumination/acquisition were tested in gelatin phantoms with embedded optical absorbers with the results demonstrating the ability to acquire volumetric dual-modal US and PA images.
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Affiliation(s)
- Maryam Basij
- Department of Biomedical Engineering, Wayne State University, Detroit, MI, USA
| | - Yan Yan
- Department of Biomedical Engineering, Wayne State University, Detroit, MI, USA
| | | | - Hamid Helmi
- Barbara Ann Karmanos Cancer Institute, Detroit, MI, USA
| | - Timothy K. Burton
- Department of Biomedical Engineering, Wayne State University, Detroit, MI, USA
| | - Jay W. Burmeister
- Department of Oncology, Wayne State University School of Medicine, Detroit, MI, USA
- Barbara Ann Karmanos Cancer Institute, Detroit, MI, USA
| | - Michael M. Dominello
- Department of Oncology, Wayne State University School of Medicine, Detroit, MI, USA
- Barbara Ann Karmanos Cancer Institute, Detroit, MI, USA
| | - Ira S. Winer
- Department of Oncology, Wayne State University School of Medicine, Detroit, MI, USA
- Barbara Ann Karmanos Cancer Institute, Detroit, MI, USA
| | - Mohammad Mehrmohammadi
- Department of Biomedical Engineering, Wayne State University, Detroit, MI, USA
- Department of Electrical and Computer Engineering, Wayne State University, Detroit, MI, USA
- Barbara Ann Karmanos Cancer Institute, Detroit, MI, USA
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167
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Chan J, Zheng Z, Bell K, Le M, Reza PH, Yeow JTW. Photoacoustic Imaging with Capacitive Micromachined Ultrasound Transducers: Principles and Developments. SENSORS (BASEL, SWITZERLAND) 2019; 19:E3617. [PMID: 31434241 PMCID: PMC6720758 DOI: 10.3390/s19163617] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 08/15/2019] [Accepted: 08/18/2019] [Indexed: 12/14/2022]
Abstract
Photoacoustic imaging (PAI) is an emerging imaging technique that bridges the gap between pure optical and acoustic techniques to provide images with optical contrast at the acoustic penetration depth. The two key components that have allowed PAI to attain high-resolution images at deeper penetration depths are the photoacoustic signal generator, which is typically implemented as a pulsed laser and the detector to receive the generated acoustic signals. Many types of acoustic sensors have been explored as a detector for the PAI including Fabry-Perot interferometers (FPIs), micro ring resonators (MRRs), piezoelectric transducers, and capacitive micromachined ultrasound transducers (CMUTs). The fabrication technique of CMUTs has given it an edge over the other detectors. First, CMUTs can be easily fabricated into given shapes and sizes to fit the design specifications. Moreover, they can be made into an array to increase the imaging speed and reduce motion artifacts. With a fabrication technique that is similar to complementary metal-oxide-semiconductor (CMOS), CMUTs can be integrated with electronics to reduce the parasitic capacitance and improve the signal to noise ratio. The numerous benefits of CMUTs have enticed researchers to develop it for various PAI purposes such as photoacoustic computed tomography (PACT) and photoacoustic endoscopy applications. For PACT applications, the main areas of research are in designing two-dimensional array, transparent, and multi-frequency CMUTs. Moving from the table top approach to endoscopes, some of the different configurations that are being investigated are phased and ring arrays. In this paper, an overview of the development of CMUTs for PAI is presented.
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Affiliation(s)
- Jasmine Chan
- Department of Systems Design Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - Zhou Zheng
- Department of Systems Design Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - Kevan Bell
- Department of Systems Design Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - Martin Le
- Department of Physics, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - Parsin Haji Reza
- Department of Systems Design Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada.
| | - John T W Yeow
- Department of Systems Design Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada.
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168
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Sun IC, Ahn CH, Kim K, Emelianov S. Photoacoustic imaging of cancer cells with glycol-chitosan-coated gold nanoparticles as contrast agents. JOURNAL OF BIOMEDICAL OPTICS 2019; 24:1-5. [PMID: 31385483 PMCID: PMC6680094 DOI: 10.1117/1.jbo.24.12.121903] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Accepted: 07/11/2019] [Indexed: 05/07/2023]
Abstract
Utility of glycol-chitosan-coated gold nanoparticles (GC-AuNPs) as a photoacoustic contrast agent for cancer cell imaging was demonstrated. Through the synergistic effect of glycol chitosan and gold nanoparticles, GC-AuNPs showed cellular uptake in breast cancer cells and resulted in strong photoacoustic signals in tissue-mimicking cell phantoms. The performance of GC-AuNPs as contrast agents was established with photoacoustic imaging and confirmed with dark-field microscopy. The cell phantoms displayed strong photoacoustic signals if cells were incubated more than 3 h with GC-AuNPs, compared with PEG-AuNPs that showed no photoacoustic signal increase. The enhanced photoacoustic signals originated from the plasmon coupling effect of GC-AuNPs after the cellular uptake in cancer cells. Importantly, photoacoustic imaging of cancer cells was achieved with GC-AuNPs—contrast agents that did not require antibodies or complex surface modification. The endocytosis of GC-AuNPs was also confirmed with dark-field microscopy. The results show that GC-AuNPs have potential as a photoacoustic contrast agent for cellular imaging including tumor tissue imaging.
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Affiliation(s)
- In-Cheol Sun
- Georgia Institute of Technology, School of Electrical and Computer Engineering Atlanta, Georgia, United States
- Georgia Institute of Technology and Emory University School of Medicine, Wallace H. Coulter Department of Biomedical Engineering, Atlanta, Georgia, United States
| | - Cheol-Hee Ahn
- Seoul National University, NanoBio Materials Laboratory, Department of Materials Science and Engineering, Seoul, Republic of Korea
| | - Kwangmeyung Kim
- Korea Institute of Science and Technology, Biomedical Research Institute, Seoul, Republic of Korea
| | - Stanislav Emelianov
- Georgia Institute of Technology, School of Electrical and Computer Engineering Atlanta, Georgia, United States
- Georgia Institute of Technology and Emory University School of Medicine, Wallace H. Coulter Department of Biomedical Engineering, Atlanta, Georgia, United States
- Address all correspondence to Stanislav Emelianov, E-mail:
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169
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Ratto F, Cavigli L, Borri C, Centi S, Magni G, Mazzoni M, Pini R. Hybrid organosilicon/polyol phantom for photoacoustic imaging. BIOMEDICAL OPTICS EXPRESS 2019; 10:3719-3730. [PMID: 31452970 PMCID: PMC6701555 DOI: 10.1364/boe.10.003719] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 05/17/2019] [Accepted: 05/18/2019] [Indexed: 05/15/2023]
Abstract
The rapid development of hardware and software for photoacoustic technologies is urging the establishment of dedicated tools for standardization and performance assessment. In particular, the fabrication of anatomical phantoms for photoacoustic imaging remains an open question, as current solutions have not yet gained unanimous support. Here, we propose that a hybrid material made of a water-in-oil emulsion of glycerol and polydimethylsiloxane may represent a versatile platform to host a broad taxonomy of hydrophobic and hydrophilic dyes and recapitulate the optical and acoustic features of bio tissue. For a full optical parameterization, we refer to Wróbel, et al. [ Biomed. Opt. Express7, 2088 (2016)], where this material was first presented for optical imaging. Instead, here, we complete the picture and find that its speed of sound and acoustic attenuation resemble those of pure polydimethylsiloxane, i.e. respectively 1150 ± 30 m/s and 3.5 ± 0.4 dB/(MHz·cm). We demonstrate its use under a commercial B-mode scanner and a home-made A-mode stage for photoacoustic analysis to retrieve the ground-truth encoded in a multilayer architecture containing indocyanine green, plasmonic particles and red blood cells. Finally, we verify the stability of its acoustic, optical and geometric features over a time span of three months.
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Affiliation(s)
- Fulvio Ratto
- Istituto di Fisica Applicata ‘Nello Carrara’ IFAC-CNR, Via Madonna del Piano, 10, 50019 Sesto Fiorentino (FI), Italy
| | - Lucia Cavigli
- Istituto di Fisica Applicata ‘Nello Carrara’ IFAC-CNR, Via Madonna del Piano, 10, 50019 Sesto Fiorentino (FI), Italy
| | - Claudia Borri
- Istituto di Fisica Applicata ‘Nello Carrara’ IFAC-CNR, Via Madonna del Piano, 10, 50019 Sesto Fiorentino (FI), Italy
| | - Sonia Centi
- Istituto di Fisica Applicata ‘Nello Carrara’ IFAC-CNR, Via Madonna del Piano, 10, 50019 Sesto Fiorentino (FI), Italy
| | - Giada Magni
- Istituto di Fisica Applicata ‘Nello Carrara’ IFAC-CNR, Via Madonna del Piano, 10, 50019 Sesto Fiorentino (FI), Italy
| | - Marina Mazzoni
- Istituto di Fisica Applicata ‘Nello Carrara’ IFAC-CNR, Via Madonna del Piano, 10, 50019 Sesto Fiorentino (FI), Italy
| | - Roberto Pini
- Istituto di Fisica Applicata ‘Nello Carrara’ IFAC-CNR, Via Madonna del Piano, 10, 50019 Sesto Fiorentino (FI), Italy
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170
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Wang S, Sheng Z, Yang Z, Hu D, Long X, Feng G, Liu Y, Yuan Z, Zhang J, Zheng H, Zhang X. Activatable Small‐Molecule Photoacoustic Probes that Cross the Blood–Brain Barrier for Visualization of Copper(II) in Mice with Alzheimer's Disease. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904047] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Shichao Wang
- Cancer Centre and Centre of Reproduction, Development and AgingFaculty of Health SciencesUniversity of Macau Macau SAR P. R. China
| | - Zonghai Sheng
- Paul C. Lauterbur Research Center for Biomedical ImagingInstitute of Biomedical and Health EngineeringShenzhen Institute of Advanced TechnologyChinese Academy of Sciences Shenzhen 518055 P. R. China
| | - Zhenguo Yang
- Affiliated Hospital of Guangdong Medical University Zhanjiang 524001 P. R. China
| | - Dehong Hu
- Paul C. Lauterbur Research Center for Biomedical ImagingInstitute of Biomedical and Health EngineeringShenzhen Institute of Advanced TechnologyChinese Academy of Sciences Shenzhen 518055 P. R. China
| | - Xiaojing Long
- Paul C. Lauterbur Research Center for Biomedical ImagingInstitute of Biomedical and Health EngineeringShenzhen Institute of Advanced TechnologyChinese Academy of Sciences Shenzhen 518055 P. R. China
| | - Gang Feng
- Cancer Centre and Centre of Reproduction, Development and AgingFaculty of Health SciencesUniversity of Macau Macau SAR P. R. China
| | - Yubin Liu
- Cancer Centre and Centre of Reproduction, Development and AgingFaculty of Health SciencesUniversity of Macau Macau SAR P. R. China
| | - Zhen Yuan
- Cancer Centre and Centre of Reproduction, Development and AgingFaculty of Health SciencesUniversity of Macau Macau SAR P. R. China
| | - Jingjing Zhang
- Affiliated Hospital of Guangdong Medical University Zhanjiang 524001 P. R. China
| | - Hairong Zheng
- Paul C. Lauterbur Research Center for Biomedical ImagingInstitute of Biomedical and Health EngineeringShenzhen Institute of Advanced TechnologyChinese Academy of Sciences Shenzhen 518055 P. R. China
| | - Xuanjun Zhang
- Cancer Centre and Centre of Reproduction, Development and AgingFaculty of Health SciencesUniversity of Macau Macau SAR P. R. China
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171
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Wang J, Hsu SW, Gonzalez-Pech N, Jhunjhunwala A, Chen F, Hariri A, Grassian V, Tao A, Jokerst JV. Copper Sulfide Nanodisks and Nanoprisms for Photoacoustic Ovarian Tumor Imaging. PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION : MEASUREMENT AND DESCRIPTION OF PARTICLE PROPERTIES AND BEHAVIOR IN POWDERS AND OTHER DISPERSE SYSTEMS 2019; 36:1900171. [PMID: 32863594 PMCID: PMC7451243 DOI: 10.1002/ppsc.201900171] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Indexed: 05/19/2023]
Abstract
Transvaginal ultrasound is widely used for ovarian cancer screening but has a high false positive rate. Photoacoustic imaging provides additional optical contrast to supplement ultrasound and might be able to improve the accuracy of screening. Here, we report two copper sulfide (CuS) nanoparticles types (nanodisks and triangular nanoprisms) as the photoacoustic contrast agents for imaging ovarian cancer. Both CuS nanoprisms and nanodisks were ~6 nm thick and ~26 nm wide and were coated with poly(ethylene glycol) to make them colloidally stable in phosphate buffered saline (PBS) for at least 2 weeks. The CuS nanodisks and nanoprisms revealed strong localized surface plasmon resonances with peak maxima at 1145 nm and 1098 nm, respectively. Both nanoparticles types had strong and stable photoacoustic intensity with detection limits below 120 pM. The circular CuS nanodisk remained in the circulation of nude mice (n=4) and xenograft 2008 ovarian tumors (n=4) 17.9-fold and 1.8-fold more than the triangular nanoprisms, respectively. Finally, the photoacoustic intensity of the tumors from the mice (n=3) treated with CuS nanodisks was 3.0-fold higher than the baseline. The tumors treated with nanodisks had a characteristic peak at 920 nm in the spectrum to potentially differentiate the tumor from adjacent tissues.
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Affiliation(s)
- Junxin Wang
- Department of Nano Engineering, University of California San Diego, La Jolla, CA 92093, USA
| | - Su-wen Hsu
- Department of Nano Engineering, University of California San Diego, La Jolla, CA 92093, USA
| | - Natalia Gonzalez-Pech
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, CA 92093, USA
| | - Anamik Jhunjhunwala
- Department of Bioengineering, University of California San Diego, La Jolla, CA 92093, USA
| | - Fang Chen
- Material Science and Engineering Program, University of California San Diego, La Jolla, CA 92093, USA
| | - Ali Hariri
- Department of Nano Engineering, University of California San Diego, La Jolla, CA 92093, USA
| | - Vicki Grassian
- Department of Nano Engineering, University of California San Diego, La Jolla, CA 92093, USA
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, CA 92093, USA
- Material Science and Engineering Program, University of California San Diego, La Jolla, CA 92093, USA
| | - Andrea Tao
- Department of Nano Engineering, University of California San Diego, La Jolla, CA 92093, USA
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, CA 92093, USA
- Material Science and Engineering Program, University of California San Diego, La Jolla, CA 92093, USA
| | - Jesse V. Jokerst
- Department of Nano Engineering, University of California San Diego, La Jolla, CA 92093, USA
- Material Science and Engineering Program, University of California San Diego, La Jolla, CA 92093, USA
- Department of Radiology, University of California San Diego, La Jolla, CA 92093, USA
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172
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Alijabbari N, Alshahrani SS, Pattyn A, Mehrmohammadi M. Photoacoustic Tomography with a Ring Ultrasound Transducer: A Comparison of Different Illumination Strategies. APPLIED SCIENCES (BASEL, SWITZERLAND) 2019; 9:10.3390/app9153094. [PMID: 32095283 PMCID: PMC7039403 DOI: 10.3390/app9153094] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Photoacoustic (PA) imaging is a methodology that uses the absorption of short laser pulses by endogenous or exogenous chromophores within human tissue, and the subsequent generation of acoustic waves acquired by an ultrasound (US) transducer, to form an image that can provide functional and molecular information. Amongst the various types of PA imaging, PA tomography (PAT) has been proposed for imaging pathologies such as breast cancer. However, the main challenge for PAT imaging is the deliverance of sufficient light energy horizontally through an imaging cross-section as well as vertically. In this study, three different illumination methods are compared for a full-ring ultrasound (US) PAT system. The three distinct illumination setups are full-ring, diffused-beam, and point source illumination. The full-ring system utilizes a cone mirror and parabolic reflector to create the ringed-shaped beam for PAT, while the diffuse scheme uses a light diffuser to expand the beam, which illuminates tissue-mimicking phantoms. The results indicate that the full-ring illumination is capable of providing a more uniform fluence irrespective of the vertical depth of the imaged cross-section, while the point source and diffused illumination methods provide a higher fluence at regions closer to the point of entry, which diminishes with depth. In addition, a set of experiments was conducted to determine the optimum position of ring-illumination with respect to the position of the acoustic detectors to achieve the highest signal-to-noise ratio.
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Affiliation(s)
- Naser Alijabbari
- Department of Biomedical Engineering, Wayne State University, Detroit, MI 48201, USA
| | - Suhail S. Alshahrani
- Department of Biomedical Engineering, Wayne State University, Detroit, MI 48201, USA
| | - Alexander Pattyn
- Department of Biomedical Engineering, Wayne State University, Detroit, MI 48201, USA
| | - Mohammad Mehrmohammadi
- Department of Biomedical Engineering, Wayne State University, Detroit, MI 48201, USA
- Department of Electrical and Computer Engineering, Wayne State University, Detroit, MI 48201, USA
- Barbara Ann Karmanos Cancer Institute, Detroit, MI 48201, USA
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173
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In vitro tissue culture model validation-the influence of tissue culture components on IPL energy output. Lasers Med Sci 2019; 34:1575-1582. [PMID: 31346825 DOI: 10.1007/s10103-019-02747-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 02/07/2019] [Indexed: 10/26/2022]
Abstract
Intense pulsed light (IPL) has been used therapeutically in a number of clinical settings and has been shown to have a photobiomodulatory effect on connective tissue cells, such as those derived from skin and tendon. In vitro cell culture models are essential tools preclinically in investigating such treatment modalities, as they help in optimising parameters for successful treatment. However, as culture system components have been reported to absorb part of the irradiated energy, which in turn has a bearing on the amount of light reaching the cells, it is important to establish specific parameters for the particular in vitro model used. This study, therefore, investigates the effect of our tissue culture system components on the IPL energy delivered. Individual wells of multi-well plates were irradiated with IPL at different device settings and under variable culture conditions (e.g. in the absence or presence of cell culture media with or without the pH indicator dye, phenol red), and the energy lost through the culture system determined. Our data demonstrated that the IPL device delivered significantly lower outputs than those published, and energy absorption by the culture equipment would further reduce fluencies delivered to the cell monolayer. Furthermore, energy absorption by media containing phenol red was marginally greater than clear media and resulted in only a small increase in temperature, which would not be harmful to cells. The use of phenol red-containing media therefore is valid and physiologically relevant when examining light-culture system interactions.
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174
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Zhu H, Xie C, Chen P, Pu K. Organic Nanotheranostics for Photoacoustic Imaging-Guided Phototherapy. Curr Med Chem 2019; 26:1389-1405. [PMID: 28933283 DOI: 10.2174/0929867324666170921103152] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 04/07/2017] [Accepted: 04/07/2017] [Indexed: 12/23/2022]
Abstract
Phototherapies including photothermal therapy (PTT) and photodynamic therapy (PDT) have emerged as one of the avant-garde strategies for cancer treatment. Photoacoustic (PA) imaging is a new hybrid imaging modality that shows great promise for real-time in vivo monitoring of biological processes with deep tissue penetration and high spatial resolution. To enhance therapeutic efficacy, reduce side effects and minimize the probability of over-medication, it is necessary to use imaging and diagnostic methods to identify the ideal therapeutic window and track the therapeutic outcome. With this regard, nanotheranostics with the ability to conduct PA imaging and PTT/PDT are emerging. This review summarizes the recent progress of organic nanomaterials including nearinfrared (NIR) dyes and semiconducting polymer nanoparticles (SPNs) in PA imaging guided cancer phototherapy, and also addresses their present challenges and potential in clinical applications.
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Affiliation(s)
- Houjuan Zhu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore
| | - Chen Xie
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore
| | - Peng Chen
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore
| | - Kanyi Pu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore
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175
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Dumani DS, Sun IC, Emelianov SY. Ultrasound-guided immunofunctional photoacoustic imaging for diagnosis of lymph node metastases. NANOSCALE 2019; 11:11649-11659. [PMID: 31173038 PMCID: PMC6586492 DOI: 10.1039/c9nr02920f] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Metastases, rather than primary tumors, determine mortality in the majority of cancer patients. A non-invasive immunofunctional imaging method was developed to detect sentinel lymph node (SLN) metastases using ultrasound-guided photoacoustic (USPA) imaging combined with glycol-chitosan-coated gold nanoparticles (GC-AuNPs) as an imaging contrast agent. GC-AuNPs, injected peritumorally into breast tumor-bearing mice, were taken up by immune cells, and subsequently transported to the SLN. Two-dimensional and three-dimensional USPA imaging was used to isolate the signal from GC-AuNP-tagged cells. Volumetric analysis was used to quantify GC-AuNP accumulation in the SLN after cellular uptake and transport by immune cells. The results show that the spatio-temporal distribution of GC-AuNPs in the SLN was affected by the presence of metastases. The parameter describing the spatial distribution of GC-AuNP-tagged cells within the SLN was more than 2-fold lower in metastatic lymph nodes compared with non-metastatic controls. Histological analysis confirmed that the distribution of GC-AuNP-tagged immune cells is changed by the presence of metastatic cells. The USPA immunofunctional imaging successfully distinguished metastatic from non-metastatic lymph nodes using biocompatible nanoparticles. This method could aid physicians in the detection of micrometastases, thus guiding SLN biopsy and avoiding unnecessary biopsy procedures.
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176
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Kubelick KP, Snider EJ, Ethier CR, Emelianov S. Development of a stem cell tracking platform for ophthalmic applications using ultrasound and photoacoustic imaging. Theranostics 2019; 9:3812-3824. [PMID: 31281515 PMCID: PMC6587354 DOI: 10.7150/thno.32546] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Accepted: 04/18/2019] [Indexed: 12/21/2022] Open
Abstract
Glaucoma is the second leading cause of blindness in the world. Disease progression is associated with reduced cellularity in the trabecular meshwork (TM), a fluid drainage tissue in the anterior eye. A promising therapy seeks to deliver stem cells to the TM to regenerate the tissue and restore its function. However, like many stem cell-based regenerative therapies, preclinical development relies heavily on histology to evaluate outcomes. To expedite clinical translation, we are developing an ultrasound/photoacoustic (US/PA) imaging platform for longitudinal tracking of stem cells in the anterior eye. Methods: Mesenchymal stem cells (MSCs) were labeled with gold nanospheres in vitro and injected through the cornea into the anterior chamber of ex vivo porcine eyes. Physiological pressure was imposed to mimic in vivo conditions. AuNS-labeled MSCs were injected through the cornea while single-wavelength US/PA images were acquired. At 5 hours post-injection, three-dimensional multi-wavelength US/PA datasets were acquired and spectroscopic analysis was used to detect AuNS-labeled MSCs. US/PA results were compared to fluorescent microscopy. Results: The US/PA imaging platform was able to provide real-time monitoring of the stem cell injection and distinguish AuNS-labeled MSCs from highly absorbing background tissues in the anterior segment. Conclusion: Our US/PA imaging approach can inform preclinical studies of stem cell therapies for glaucoma treatment, motivating further development of this theranostic imaging tool for ophthalmic applications.
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Affiliation(s)
- Kelsey P. Kubelick
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, 313 Ferst Dr NW, Atlanta, GA 30332 USA
| | - Eric J. Snider
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, 313 Ferst Dr NW, Atlanta, GA 30332 USA
| | - C. Ross Ethier
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, 313 Ferst Dr NW, Atlanta, GA 30332 USA
| | - Stanislav Emelianov
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, 313 Ferst Dr NW, Atlanta, GA 30332 USA
- School of Electrical and Computer Engineering, Georgia Institute of Technology, 777 Atlantic Drive, Atlanta, GA 30332, USA
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177
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Morales J, Pawle RH, Akkilic N, Luo Y, Xavierselvan M, Albokhari R, Calderon IAC, Selfridge S, Minns R, Takiff L, Mallidi S, Clark HA. DNA-Based Photoacoustic Nanosensor for Interferon Gamma Detection. ACS Sens 2019; 4:1313-1322. [PMID: 30973005 DOI: 10.1021/acssensors.9b00209] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Tracking protein levels in the body is vital in both research and medicine, where understanding their physiological roles provides insight into their regulation in homeostasis and diseases. In medicine, protein levels are actively sampled since they continuously fluctuate, reflecting the status of biological systems and provide insight into patient health. One such protein is interferon gamma, a clinically relevant protein with immunoregulatory functions that play critical roles against infection. New tools for continuously monitoring protein levels in vivo are invaluable in monitoring real-time conditions of patients to allow better care. Here, we developed a DNA-based nanosensor for the photoacoustic detection of interferon gamma. This work demonstrates how we transformed a simple DNA motif, receptors, and a novel phthalocyanine dye into a proof-of-concept photoacoustic nanosensor for protein detection. Surface plasmon resonance kinetic analysis demonstrated that the nanosensor is responsive and reversible to interferon gamma with an affinity in the nanomolar range, KD1 = 167 nM and KD2 = 316 nM. As a reporter, our design includes a novel phthalocyanine-based photoacoustic dye that stacks in a J-aggregate, causing a 22.5% increase in signal. Upon receptor binding, the DNA structure bends to induce phthalocyanine dye stacking, resulting in a 55% increase in photoacoustic signal in the presence of 10 μM interferon gamma. This proof-of-concept nanosensor is a novel approach to the development of a photoacoustic sensor and may be adapted for other proteins of interest in the future for in vivo tracking.
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Affiliation(s)
- Jennifer Morales
- Department of Bioengineering, Northeastern University, Boston, Massachusetts 02115, United States,
| | - Robert H. Pawle
- Akita Innovations LLC, Billerica, Massachusetts 01862, United States,
| | - Namik Akkilic
- Department of Pharmaceutical Sciences, Northeastern University, Boston, Massachusetts 02115, United States,
| | - Yi Luo
- Department of Pharmaceutical Sciences, Northeastern University, Boston, Massachusetts 02115, United States,
| | - Marvin Xavierselvan
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, United States,
| | - Rayan Albokhari
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, United States,
| | - Isen Andrew C. Calderon
- Department of Bioengineering, Northeastern University, Boston, Massachusetts 02115, United States,
| | - Scott Selfridge
- Akita Innovations LLC, Billerica, Massachusetts 01862, United States,
| | - Richard Minns
- Akita Innovations LLC, Billerica, Massachusetts 01862, United States,
| | - Larry Takiff
- Akita Innovations LLC, Billerica, Massachusetts 01862, United States,
| | - Srivalleesha Mallidi
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, United States,
| | - Heather A. Clark
- Department of Bioengineering, Northeastern University, Boston, Massachusetts 02115, United States,
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, Massachusetts 02115, United States
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178
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Wollweber M, Roth B. Raman Sensing and Its Multimodal Combination with Optoacoustics and OCT for Applications in the Life Sciences. SENSORS (BASEL, SWITZERLAND) 2019; 19:E2387. [PMID: 31137716 PMCID: PMC6566696 DOI: 10.3390/s19102387] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 05/10/2019] [Accepted: 05/15/2019] [Indexed: 12/29/2022]
Abstract
Currently, many optical modalities are being investigated, applied, and further developed for non-invasive analysis and sensing in the life sciences. To befit the complexity of the study objects and questions in this field, the combination of two or more modalities is attempted. We review our work on multimodal sensing concepts for applications ranging from non-invasive quantification of biomolecules in the living organism to supporting medical diagnosis showing the combined capabilities of Raman spectroscopy, optical coherence tomography, and optoacoustics.
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Affiliation(s)
- Merve Wollweber
- Laser Zentrum Hannover e.V., Industrial and Biomedical Optics Department, Hollerithallee 8, 30419 Hannover, Germany.
- Hannover Centre for Optical Technologies, Leibniz University Hannover, Nienburger Str. 17, 30167 Hannover, Germany.
| | - Bernhard Roth
- Hannover Centre for Optical Technologies, Leibniz University Hannover, Nienburger Str. 17, 30167 Hannover, Germany.
- Cluster of Excellence PhoenixD, Leibniz University Hannover, Welfengarten 1, 30167 Hannover, Germany.
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Abstract
Fuelled by innovation, optical microscopy plays a critical role in the life sciences and medicine, from basic discovery to clinical diagnostics. However, optical microscopy is limited by typical penetration depths of a few hundred micrometres for in vivo interrogations in the visible spectrum. Optoacoustic microscopy complements optical microscopy by imaging the absorption of light, but it is similarly limited by penetration depth. In this Review, we summarize progress in the development and applicability of optoacoustic mesoscopy (OPAM); that is, optoacoustic imaging with acoustic resolution and wide-bandwidth ultrasound detection. OPAM extends the capabilities of optical imaging beyond the depths accessible to optical and optoacoustic microscopy, and thus enables new applications. We explain the operational principles of OPAM, its placement as a bridge between optoacoustic microscopy and optoacoustic macroscopy, and its performance in the label-free visualization of tissue pathophysiology, such as inflammation, oxygenation, vascularization and angiogenesis. We also review emerging applications of OPAM in clinical and biological imaging.
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180
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Moore C, Chen F, Wang J, Jokerst JV. Listening for the therapeutic window: Advances in drug delivery utilizing photoacoustic imaging. Adv Drug Deliv Rev 2019; 144:78-89. [PMID: 31295522 PMCID: PMC6745251 DOI: 10.1016/j.addr.2019.07.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 06/04/2019] [Accepted: 07/02/2019] [Indexed: 02/07/2023]
Abstract
The preclinical landscape of photoacoustic imaging has experienced tremendous growth in the past decade. This non-invasive imaging modality augments the spatiotemporal capabilities of ultrasound with optical contrast. While it has principally been investigated for diagnostic applications, many recent reports have described theranostic delivery systems and drug monitoring strategies using photoacoustics. Here, we provide an overview of the progress to date while highlighting work in three specific areas: theranostic nanoparticles, real-time drug monitoring, and stem cell ("living drug") tracking. Additionally, we discuss the challenges that remain to be addressed in this burgeoning field.
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Affiliation(s)
- Colman Moore
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093, United States
| | - Fang Chen
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093, United States; Materials Science and Engineering Program, University of California, San Diego, La Jolla, CA 92093, United States
| | - Junxin Wang
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093, United States
| | - Jesse V Jokerst
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093, United States; Materials Science and Engineering Program, University of California, San Diego, La Jolla, CA 92093, United States; Department of Radiology, University of California, San Diego, La Jolla, CA 92093, United States.
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181
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Singh MS, Thomas A. Photoacoustic elastography imaging: a review. JOURNAL OF BIOMEDICAL OPTICS 2019; 24:1-15. [PMID: 31041859 PMCID: PMC6990059 DOI: 10.1117/1.jbo.24.4.040902] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Accepted: 04/05/2019] [Indexed: 05/12/2023]
Abstract
Elastography imaging is a promising tool-in both research and clinical settings-for diagnosis, staging, and therapeutic treatments of various life-threatening diseases (including brain tumors, breast cancers, prostate cancers, and Alzheimer's disease). Large variation in the physical (elastic) properties of tissue, from normal to diseased stages, enables highly sensitive characterization of pathophysiological states of the diseases. On the other hand, over the last decade or so, photoacoustic (PA) imaging-an imaging modality that combines the advantageous features of two separate imaging modalities, i.e., high spatial resolution and high contrast obtainable, respectively, from ultrasound- and optical-based modalities-has been emerging and widely studied. Recently, recovery of elastic properties of soft biological tissues-in addition to prior reported recovery of vital tissue physiological information (Hb, HbO2, SO, and total Hb), noninvasively and nondestructively, with unprecedented spatial resolution (μm) at penetration depth (cm)-has been reported. Studies demonstrating that combined recovery of mechanical tissue properties and physiological information-by a single (PA) imaging unit-pave a promising platform in clinical diagnosis and therapeutic treatments. We offer a comprehensive review of PA imaging technology, focusing on recent advances in relation to elastography. Our review draws out technological challenges pertaining to PA elastography (PAE) imaging, and viable approaches. Currently, PAE imaging is in the nurture stage of its development, where the technology is limited to qualitative study. The prevailing challenges (specifically, quantitative measurements) may be addressed in a similar way by which ultrasound elastography and optical coherence elastography were accredited for quantitative measurements.
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Affiliation(s)
- Mayanglambam Suheshkumar Singh
- Indian Institute of Science Education and Research Thiruvananthapuram (IISER-TVM), School of Physics (SoP), Biomedical Instrumentation and Imaging Laboratory (BIIL), Thiruvananthapuram, Kerala, India
| | - Anjali Thomas
- Indian Institute of Science Education and Research Thiruvananthapuram (IISER-TVM), School of Physics (SoP), Biomedical Instrumentation and Imaging Laboratory (BIIL), Thiruvananthapuram, Kerala, India
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182
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Alshahrani SS, Yan Y, Alijabbari N, Pattyn A, Avrutsky I, Malyarenko E, Poudel J, Anastasio M, Mehrmohammadi M. All-reflective ring illumination system for photoacoustic tomography. JOURNAL OF BIOMEDICAL OPTICS 2019; 24:1-7. [PMID: 31028693 PMCID: PMC6906953 DOI: 10.1117/1.jbo.24.4.046004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Accepted: 04/08/2019] [Indexed: 05/09/2023]
Abstract
Given that breast cancer is the second leading cause of cancer-related deaths among women in the United States, it is necessary to continue improving the sensitivity and specificity of breast imaging systems that diagnose breast lesions. Photoacoustic (PA) imaging can provide functional information during in vivo studies and can augment the structural information provided by ultrasound (US) imaging. A full-ring, all-reflective, illumination system for photoacoustic tomography (PAT) coupled to a full-ring US receiver is developed and tested. The US/PA tomography system utilizes a cone mirror and conical reflectors to optimize light delivery for PAT imaging and has the potential to image objects that are placed within the ring US transducer. The conical reflector used in this system distributes the laser energy over a circular cross-sectional area, thereby reducing the overall fluence. This, in turn, allows the operator to increase the laser energy achieving better cross-sectional penetration depth. A proof-of-concept design utilizing a single cone mirror and a parabolic reflector is used for imaging cylindrical phantoms with light-absorbing objects. For the given phantoms, it has been shown that there was no restriction in imaging a given targeted cross-sectional area irrespective of vertical depth, demonstrating the potential of mirror-based, ring-illuminated PAT system. In addition, the all-reflective ring illumination method shows a uniform PA signal across the scanned cross-sectional area.
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Affiliation(s)
- Suhail Salem Alshahrani
- Wayne State University, Department of Biomedical Engineering, Detroit, Michigan, United States
| | - Yan Yan
- Wayne State University, Department of Biomedical Engineering, Detroit, Michigan, United States
| | - Naser Alijabbari
- Wayne State University, Department of Biomedical Engineering, Detroit, Michigan, United States
| | - Alexander Pattyn
- Wayne State University, Department of Biomedical Engineering, Detroit, Michigan, United States
| | - Ivan Avrutsky
- Wayne State University, Department of Electrical and Computer Engineering, Detroit, Michigan, United States
| | - Eugene Malyarenko
- Barbara Ann Karmanos Cancer Institute, Detroit, Michigan, United States
| | - Joemini Poudel
- Washington University in St. Louis, Biomedical Engineering Department, St. Louis, Washington, United States
| | - Mark Anastasio
- Washington University in St. Louis, Biomedical Engineering Department, St. Louis, Washington, United States
| | - Mohammad Mehrmohammadi
- Wayne State University, Department of Biomedical Engineering, Detroit, Michigan, United States
- Wayne State University, Department of Electrical and Computer Engineering, Detroit, Michigan, United States
- Barbara Ann Karmanos Cancer Institute, Detroit, Michigan, United States
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183
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Moradi H, Tang S, Salcudean SE. Toward Robot-Assisted Photoacoustic Imaging: Implementation Using the da Vinci Research Kit and Virtual Fixtures. IEEE Robot Autom Lett 2019. [DOI: 10.1109/lra.2019.2897168] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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184
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Moore C, Jokerst JV. Strategies for Image-Guided Therapy, Surgery, and Drug Delivery Using Photoacoustic Imaging. Theranostics 2019; 9:1550-1571. [PMID: 31037123 PMCID: PMC6485201 DOI: 10.7150/thno.32362] [Citation(s) in RCA: 97] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 01/26/2019] [Indexed: 12/17/2022] Open
Abstract
Photoacoustic imaging is a rapidly maturing imaging modality in biological research and medicine. This modality uses the photoacoustic effect ("light in, sound out") to combine the contrast and specificity of optical imaging with the high temporal resolution of ultrasound. The primary goal of image-guided therapy, and theranostics in general, is to transition from conventional medicine to precision strategies that combine diagnosis with therapy. Photoacoustic imaging is well-suited for noninvasive guidance of many therapies and applications currently being pursued in three broad areas. These include the image-guided resection of diseased tissue, monitoring of disease states, and drug delivery. In this review, we examine the progress and strategies for development of photoacoustics in these three key areas with an emphasis on the value photoacoustics has for image-guided therapy.
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Affiliation(s)
| | - Jesse V. Jokerst
- Department of NanoEngineering
- Materials Science and Engineering Program
- Department of Radiology, University of California, San Diego, La Jolla, CA 92093. United States
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185
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Hood ZD, Kubelick KP, Gilroy KD, Vanderlaan D, Yang X, Yang M, Chi M, Emelianov SY, Xia Y. Photothermal transformation of Au-Ag nanocages under pulsed laser irradiation. NANOSCALE 2019; 11:3013-3020. [PMID: 30698179 DOI: 10.1039/c8nr10002k] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Pulsed laser irradiation has emerged as an effective means to photothermally transform plasmonic nanostructures after their use in different biomedical applications. However, the ability to predict the products after photothermal transformation requires extensive ex situ studies. Here, we report a systematic study of the photothermal transformation of Au-Ag nanocages with a localized surface plasmon resonance at ca. 750 nm under pulsed laser irradiation at different fluences and a pulse duration of 5 ns. At biologically relevant laser energies, the pulsed laser transforms Au-Ag nanocages into pseudo-spherical, solid nanoparticles. The solid nanoparticles contained similar numbers of Au and Ag atoms to the parent Au-Ag nanocages. At increased laser fluences (>16 mJ cm-2) and number of pulses (>150), the average diameter of the resulting pseudo-spherical particles increased due to the involvement of Ostwald ripening and/or attachment-based growth. The changes in optical properties as a result of the transformation were validated using simulations based on the discrete dipole approximation method, where the spectral profiles and peak positions of the initial and final states matched well with the experimentally derived data. The results may have implications for the future use of Au-Ag nanocages in biomedicine, catalysis, and sensing.
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Affiliation(s)
- Zachary D Hood
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, USA.
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186
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Fu Q, Zhu R, Song J, Yang H, Chen X. Photoacoustic Imaging: Contrast Agents and Their Biomedical Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1805875. [PMID: 30556205 DOI: 10.1002/adma.201805875] [Citation(s) in RCA: 258] [Impact Index Per Article: 51.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 10/10/2018] [Indexed: 05/20/2023]
Abstract
Photoacoustic (PA) imaging as a fast-developing imaging technique has great potential in biomedical and clinical applications. It is a noninvasive imaging modality that depends on the light-absorption coefficient of the imaged tissue and the injected PA-imaging contrast agents. Furthermore, PA imaging provides superb contrast, super spatial resolution, and high penetrability and sensitivity to tissue functional characteristics by detecting the acoustic wave to construct PA images. In recent years, a series of PA-imaging contrast agents are developed to improve the PA-imaging performance in biomedical applications. Here, recent progress of PA contrast agents and their biomedical applications are outlined. PA contrast agents are classified according to their components and function, and gold nanocrystals, gold-nanocrystal assembly, transition-metal chalcogenides/MXene-based nanomaterials, carbon-based nanomaterials, other inorganic imaging agents, small organic molecules, semiconducting polymer nanoparticles, and nonlinear PA-imaging contrast agents are discussed. The applications of PA contrast agents as biosensors (in the sensing of metal ions, pH, enzymes, temperature, hypoxia, reactive oxygen species, and reactive nitrogen species) and in bioimaging (lymph nodes, vasculature, tumors, and brain tissue) are discussed in detail. Finally, an outlook on the future research and investigation of PA-imaging contrast agents and their significance in biomedical research is presented.
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Affiliation(s)
- Qinrui Fu
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
| | - Rong Zhu
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
| | - Jibin Song
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
| | - Huanghao Yang
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
| | - Xiaoyuan Chen
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, MD, 20892, USA
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187
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Yang J, Zhang G, Li Q, Liao C, Huang L, Ke T, Jiang H, Han D. Photoacoustic imaging for the evaluation of early tumor response to antivascular treatment. Quant Imaging Med Surg 2019; 9:160-170. [PMID: 30976540 DOI: 10.21037/qims.2018.11.06] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Background Photoacoustic imaging (PAI) provides real-time noninvasive and contrast agent-free monitoring of the concentrations of some endogenous compounds related to tumor vascularization and oxygenation. In this study, we used PAI to noninvasively evaluate tumor responses to antiangiogenic therapy. Methods In vivo studies were performed with the approval of our institutional animal ethics committee. We used a xenograft mouse model of 4T1 breast cancer treated with different doses of bevacizumab or vehicle. Seven days after implantation, tumor-bearing mice (with tumors ~5-8 mm diameter) were randomly divided into low-dose (10 mg/kg), high-dose (20 mg/kg) and vehicle groups (same dose of saline). Each experimental group was administered bevacizumab intraperitoneally only once. Before and after treatment, acoustic resolution-photoacoustic microscopy (AR-PAM), a type of PAI, was conducted in vivo consecutively from day 1 to day 5. PAI-derived quantitative parameters were calculated at each time point. Additional cohorts of mice were used to quantify CD31 and hypoxia by immunohistochemical assays. Results The values of the PAI parameters were not significantly different among the experimental and control groups at the same time point before treatment (all P>0.05). The total hemoglobin (HbT) levels in the treatment group gradually decreased from day 1 to day 2 (relative to those in the control group, P>0.05) and decreased significantly relative to those in the control group from day 3 to day 5 (P<0.05). The deoxyhemoglobin (HbR) levels in the treatment group decreased from day 1 to 5 after treatment. The high-dose group had significantly decreased HbR levels relative to the control group from day 1 to 5 (P<0.05). The low-dose group also showed a gradual and significant decrease in HbR levels on day 3 (P<0.05). CD31 was decreased in the low-dose group relative to the control group on day 1 (decreased by 34.05%, P=0.067) and day 3 (decreased by 45.27%, P=0.180), and the decrease in CD31 persisted on day 5 (decreased by 71.41%, P=0.000). CD31 decreased to a greater extent in the high-dose group than in the low-dose group. Tumor hypoxia was significantly increased on day 1 from day 0 in the treatment groups (P<0.05), especially in the high-dose group. Hypoxia was decreased on days 3 and 5 in the low-dose group (10.92±0.92 and 8.17±1.9, P=0.317) but continuously increased over time in the high-dose group. Significantly greater hypoxia was observed in the high-dose group than in the low-dose group (17.60±1.20 and 20.33±0.47, P<0.05). Conclusions PAI can be used to evaluate both vessel regression and hypoxia in response to anti-vascular treatment.
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Affiliation(s)
- Jun Yang
- Department of Radiology, The Third Affiliated Hospital of Kunming Medical University, Yunnan Cancer Hospital, Kunming 650118, Yunnan, China.,Department of Medical Imaging, The First Affiliated Hospital of Kunming Medical University, Kunming 650032, China
| | - Guang Zhang
- School of Electronic Science and Engineering, University of Electronic Science and Technology, Chengdu 610054, China.,Center for Information in Biomedicine, University of Electronic Science and Technology, Chengdu 610054, China
| | - Qinqing Li
- Department of Radiology, The Third Affiliated Hospital of Kunming Medical University, Yunnan Cancer Hospital, Kunming 650118, Yunnan, China
| | - Chengde Liao
- Department of Radiology, The Third Affiliated Hospital of Kunming Medical University, Yunnan Cancer Hospital, Kunming 650118, Yunnan, China
| | - Lin Huang
- School of Electronic Science and Engineering, University of Electronic Science and Technology, Chengdu 610054, China.,Center for Information in Biomedicine, University of Electronic Science and Technology, Chengdu 610054, China
| | - Tengfei Ke
- Department of Radiology, The Third Affiliated Hospital of Kunming Medical University, Yunnan Cancer Hospital, Kunming 650118, Yunnan, China
| | - Huabei Jiang
- School of Electronic Science and Engineering, University of Electronic Science and Technology, Chengdu 610054, China.,Center for Information in Biomedicine, University of Electronic Science and Technology, Chengdu 610054, China.,Department of Medical Engineering, University of South Florida, Tampa, FL 33620, USA
| | - Dan Han
- Department of Medical Imaging, The First Affiliated Hospital of Kunming Medical University, Kunming 650032, China
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188
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Bioinspired magnetic nanoparticles as multimodal photoacoustic, photothermal and photomechanical contrast agents. Sci Rep 2019; 9:887. [PMID: 30696936 PMCID: PMC6351522 DOI: 10.1038/s41598-018-37353-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 11/22/2018] [Indexed: 01/19/2023] Open
Abstract
Nanoparticles from magnetotactic bacteria have been used in conventional imaging, drug delivery, and magnetic manipulations. Here, we show that these natural nanoparticles and their bioinspired hybrids with near-infrared gold nanorods and folic acid can serve as molecular high-contrast photoacoustic probes for single-cell diagnostics and as photothermal agents for single-cell therapy using laser-induced vapor nanobubbles and magnetic field as significant signal and therapy amplifiers. These theranostics agents enable the detection and photomechanical killing of triple negative breast cancer cells that are resistant to conventional chemotherapy, with just one or a few low-energy laser pulses. In studies in vivo, we discovered that circulating tumor cells labeled with the nanohybrids generate transient ultrasharp photoacoustic resonances directly in the bloodstream as the basis for new super-resolution photoacoustic flow cytometry in vivo. These properties make natural and bioinspired magnetic nanoparticles promising biocompatible, multimodal, high-contrast, and clinically relevant cellular probes for many in vitro and in vivo biomedical applications.
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189
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Visscher M, Lajoinie G, Blazejewski E, Veldhuis G, Versluis M. Laser-activated microparticles for multimodal imaging: ultrasound and photoacoustics. Phys Med Biol 2019; 64:034001. [PMID: 30523821 DOI: 10.1088/1361-6560/aaf4a2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The increasing personalization of medical treatment demands refined imaging and increased monitoring capabilities, as well as an improved efficacy through targeted drug delivery. Such a transition in health care can be facilitated by the use of multimodal contrast agents. In this paper, we present a novel type of multimodal contrast agents, that enhances contrast both in ultrasound and in photoacoustic imaging, while at the same time being capable of triggered drug delivery. Upon pulsed laser irradiation, polymeric microparticles-containing a dye and an oil core-can create a cavitation bubble that subsequently emits a strong acoustic wave. We investigated different formulations of these particles, by changing the oil content, dye concentration and probing conditions using a combination of pulsed laser excitation and an ultrasound chirp. We demonstrated that capsules with a core containing a low boiling point oil give the highest photoacoustic and acoustic response. The laser activation threshold for this system is high in the visible range, but within the near infrared medical limits. The same system also produces a stable bubble. US scattering by these stable bubbles results in medically relevant frequencies, making the particles of interest for biomedical and pre-clinical imaging. Finally, the system has potential to carry a functional drug-load, and a route to these applications is discussed.
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Affiliation(s)
- Mirjam Visscher
- Physics of Fluids Group, Technical Medical (TechMed) Centre and MESA+ Institute for Nanotechnology, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands. Department of Biomedical Engineering, Thorax Center, Erasmus University Medical Center, PO Box 2040, 3000 CA Rotterdam, The Netherlands
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190
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Chang K, Gao D, Qi Q, Liu Y, Yuan Z. Engineering biocompatible benzodithiophene-based polymer dots with tunable absorptions as high-efficiency theranostic agents for multiscale photoacoustic imaging-guided photothermal therapy. Biomater Sci 2019; 7:1486-1492. [PMID: 30672925 DOI: 10.1039/c8bm01577e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Conjugated polymer dots with tunable absorptions by controlling the structure have been engineered for multiscale photoacoustic imaging-guided photothermal therapy.
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Affiliation(s)
- Kaiwen Chang
- Bioimaging Core
- Faculty of Health Sciences
- University of Macau
- Macau SAR 999078
- China
| | - Duyang Gao
- Bioimaging Core
- Faculty of Health Sciences
- University of Macau
- Macau SAR 999078
- China
| | - Qiaofang Qi
- Key Laboratory of Medical Molecular Probes
- Department of Chemistry
- School of Basic Medical Sciences
- Xinxiang Medical University
- Xinxiang 453003
| | - Yubin Liu
- Bioimaging Core
- Faculty of Health Sciences
- University of Macau
- Macau SAR 999078
- China
| | - Zhen Yuan
- Bioimaging Core
- Faculty of Health Sciences
- University of Macau
- Macau SAR 999078
- China
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191
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Miao T, Floreani RA, Liu G, Chen X. Nanotheranostics-Based Imaging for Cancer Treatment Monitoring. Bioanalysis 2019. [DOI: 10.1007/978-3-030-01775-0_16] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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192
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M SM, Veeranarayanan S, Maekawa T, D SK. External stimulus responsive inorganic nanomaterials for cancer theranostics. Adv Drug Deliv Rev 2019; 138:18-40. [PMID: 30321621 DOI: 10.1016/j.addr.2018.10.007] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 09/03/2018] [Accepted: 10/08/2018] [Indexed: 01/21/2023]
Abstract
Cancer is a highly intelligent system of cells, that works together with the body to thrive and subsequently overwhelm the host in order for its survival. Therefore, treatment regimens should be equally competent to outsmart these cells. Unfortunately, it is not the case with current therapeutic practices, the reason why it is still one of the most deadly adversaries and an imposing challenge to healthcare practitioners and researchers alike. With rapid nanotechnological interventions in the medical arena, the amalgamation of diagnostic and therapeutic functionalities into a single platform, theranostics provides a never before experienced hope of enhancing diagnostic accuracy and therapeutic efficiency. Additionally, the ability of these nanotheranostic agents to perform their actions on-demand, i.e. can be controlled by external stimulus such as light, magnetic field, sound waves and radiation has cemented their position as next generation anti-cancer candidates. Numerous reports exist of such stimuli-responsive theranostic nanomaterials against cancer, but few have broken through to clinical trials, let alone clinical practice. This review sheds light on the pros and cons of a few such theranostic nanomaterials, especially inorganic nanomaterials which do not require any additional chemical moieties to initiate the stimulus. The review will primarily focus on preclinical and clinical trial approved theranostic agents alone, describing their success or failure in the respective stages.
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Affiliation(s)
- Sheikh Mohamed M
- Bio-Nano Electronics Research Centre, Toyo University, Kawagoe, 350-8585, Japan; Graduate School of Interdisciplinary New Science, Toyo University, Kawagoe 350-8585, Japan
| | | | - Toru Maekawa
- Bio-Nano Electronics Research Centre, Toyo University, Kawagoe, 350-8585, Japan; Graduate School of Interdisciplinary New Science, Toyo University, Kawagoe 350-8585, Japan.
| | - Sakthi Kumar D
- Bio-Nano Electronics Research Centre, Toyo University, Kawagoe, 350-8585, Japan; Graduate School of Interdisciplinary New Science, Toyo University, Kawagoe 350-8585, Japan.
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193
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Recent Advances of Gold Nanoparticles in Biomedical Applications: State of the Art. Cell Biochem Biophys 2018; 77:123-137. [DOI: 10.1007/s12013-018-0863-4] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Accepted: 12/08/2018] [Indexed: 12/31/2022]
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194
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Fernandes DA, Kolios MC. Intrinsically absorbing photoacoustic and ultrasound contrast agents for cancer therapy and imaging. NANOTECHNOLOGY 2018; 29:505103. [PMID: 30192236 DOI: 10.1088/1361-6528/aadfbc] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Nanoparticles are submicrometer in size and are used in a variety of ways in the biomedical field. They can carry therapeutic drugs, either in the particle core or surface to target cancer sites in the body. Additionally they can contain imaging agents to diagnose and monitor the tumor size using different imaging modalities, such as fluorescence and nuclear magnetic resonance imaging. Novel theranostic nanoparticle agents, called perfluorohexane nanoemulsions (PFH-NEs) were synthesized whose intrinsic properties could be used for both imaging (ultrasound and photoacoustic) and therapy. Compared to other theranostic agents, our PFH-NEs can absorb sufficient near-infrared light to enhance contrast and provide deeper penetration imaging at laser fluences causing minimal damage to healthy tissue. One contrast mechanism (optical absorption/photoacoustics) allows us to validate localization of the agent and another (acoustic impedance/ultrasound) allows the imaging of therapeutic delivery after particle activation. In this work, we show the potential of these PFH-NEs to be used as multimodal imaging agents and for therapy.
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Affiliation(s)
- Donald A Fernandes
- Department of Chemistry & Biology, Ryerson University, Toronto, 350 Victoria Street Toronto, Ontario M5B 2K3, Ontario, Canada
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195
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Moore C, Bai Y, Hariri A, Sanchez JB, Lin CY, Koka S, Sedghizadeh P, Chen C, Jokerst JV. Photoacoustic imaging for monitoring periodontal health: A first human study. PHOTOACOUSTICS 2018; 12:67-74. [PMID: 30450281 PMCID: PMC6226559 DOI: 10.1016/j.pacs.2018.10.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 10/28/2018] [Accepted: 10/29/2018] [Indexed: 05/02/2023]
Abstract
The gold-standard periodontal probe is an aging tool that can detect periodontitis and monitor gingival health but is highly error-prone, does not fully characterize the periodontal pocket, and causes pain. Photoacoustic imaging is a noninvasive technique that can address these limitations. Here, a range of ultrasound frequencies between 16-40 MHz were used to image the periodontium and a contrast medium based on cuttlefish ink was used to label the pockets. A 40 MHz ultrasound frequency could spatially resolve the periodontal anatomy, including tooth, gum, gingival margin, and gingival thickness of tooth numbers 7-10 and 22-27. The photoacoustic-ultrasound measurements were more precise (0.01 mm) than those taken with physical probes by a dental hygienist. Furthermore, the full geometry of the pockets could be visualized with relative standard deviations of 10% (n = 5). This study shows the potential for non-invasive monitoring of periodontal health with photoacoustic-ultrasound imaging in the dental clinic.
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Affiliation(s)
- Colman Moore
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive. La Jolla, CA, 92092, USA
| | - Yuting Bai
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive. La Jolla, CA, 92092, USA
| | - Ali Hariri
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive. La Jolla, CA, 92092, USA
| | - Joan B Sanchez
- Herman Ostrow School of Dentistry, University of Southern California, 925 West 34th Street, Los Angeles, CA, 90089, USA
| | - Ching-Yu Lin
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive. La Jolla, CA, 92092, USA
| | - Sreenivas Koka
- School of Dentistry, University of California, Los Angeles, 714 Tiverton Ave, Los Angeles, CA, 90024, USA
- Koka Dental Clinic, 8031 Linda Vista Rd, San Diego, CA, 92111, USA
| | - Parish Sedghizadeh
- Herman Ostrow School of Dentistry, University of Southern California, 925 West 34th Street, Los Angeles, CA, 90089, USA
| | - Casey Chen
- Herman Ostrow School of Dentistry, University of Southern California, 925 West 34th Street, Los Angeles, CA, 90089, USA
| | - Jesse V Jokerst
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive. La Jolla, CA, 92092, USA
- Materials Science Program, University of California, San Diego, 9500 Gilman Drive. La Jolla, CA, 92092, USA
- Department of Radiology, University of California, San Diego, 9500 Gilman Drive. La Jolla, CA, 92092, USA
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196
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Gao D, Zhang P, Liu Y, Sheng Z, Chen H, Yuan Z. Protein-modified conjugated polymer nanoparticles with strong near-infrared absorption: a novel nanoplatform to design multifunctional nanoprobes for dual-modal photoacoustic and fluorescence imaging. NANOSCALE 2018; 10:19742-19748. [PMID: 30328874 DOI: 10.1039/c8nr06197a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Engineering conjugated polymer nanoparticles (CPNs) with an easily-modified surface is essential to construct multifunctional nanoprobes as contrast agents for dual-modal photoacoustic (PA) and fluorescence imaging, which can take advantages of the complementary information from a single modality. In this study, an abundant protein with plenty of functional groups was introduced for the first time to produce easily-modified CPNs, leading to a robust nanoplatform to engineer PA-based multifunctional nanoprobes due to their strong optical absorption in the near-infrared region. Meanwhile, the bovine serum albumin (BSA)-modified CPNs were further engineered by introducing gold clusters in situ, which can serve as fluorescent nanoprobes for dual-modal molecular imaging. In particular, the developed nanoplatform exhibited superior stability and excellent biocompatibility, making it an ideal candidate for various cancer-theranostics applications. More importantly, our imaging results demonstrated that the BSA-modified CPNs were excellent candidates to design PA-based contrast agents for multimodal imaging using the function of the protein. In addition, other functional blocks can also be added to the nanoplatform based on its easily-modified surface, making it a general method for the construction of multifunctional nanoprobes for disease theranostics.
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Affiliation(s)
- Duyang Gao
- Bioimaging Core, Faculty of Health Sciences, University of Macau, Macao, China.
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197
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Borg RE, Rochford J. Molecular Photoacoustic Contrast Agents: Design Principles & Applications. Photochem Photobiol 2018; 94:1175-1209. [PMID: 29953628 PMCID: PMC6252265 DOI: 10.1111/php.12967] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 06/10/2018] [Indexed: 12/24/2022]
Abstract
Photoacoustic imaging (PAI) is a rapidly growing field which offers high spatial resolution and high contrast for deep-tissue imaging in vivo. PAI is nonionizing and noninvasive and combines the optical resolution of fluorescence imaging with the spatial resolution of ultrasound imaging. In particular, the development of exogenous PA contrast agents has gained significant momentum of late with a vastly expanding complexity of dye materials under investigation ranging from small molecules to macromolecular proteins, polymeric and inorganic nanoparticles. The goal of this review is to survey the current state of the art in molecular photoacoustic contrast agents (MPACs) for applications in biomedical imaging. The fundamental design principles of MPACs are presented and a review of prior reports spanning from early-to-current literature is put forth.
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Affiliation(s)
| | - Jonathan Rochford
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Boulevard, Boston, MA 02125
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198
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Mattu C, Brachi G, Menichetti L, Flori A, Armanetti P, Ranzato E, Martinotti S, Nizzero S, Ferrari M, Ciardelli G. Alternating block copolymer-based nanoparticles as tools to modulate the loading of multiple chemotherapeutics and imaging probes. Acta Biomater 2018; 80:341-351. [PMID: 30236799 DOI: 10.1016/j.actbio.2018.09.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 08/30/2018] [Accepted: 09/15/2018] [Indexed: 12/30/2022]
Abstract
Cancer therapy often relies on the combined action of different molecules to overcome drug resistance and enhance patient outcome. Combined strategies relying on molecules with different pharmacokinetics often fail due to the lack of concomitant tumor accumulation and, thus, to the loss of synergistic effect. Due to their ability to enhance treatment efficiency, improve drug pharmacokinetics, and reduce adverse effects, polymer nanoparticles (PNPs) have been widely investigated as co-delivery vehicles for cancer therapies. However, co-encapsulation of different drugs and probes in PNPs requires a flexible polymer platform and a tailored particle design, in which both the bulk and surface properties of the carriers are carefully controlled. In this work, we propose a core-shell PNP design based on a polyurethane (PUR) core and a phospholipid external surface. The modulation of the hydrophilic/hydrophobic balance of the PUR core enhanced the encapsulation of two chemotherapeutics with dramatically different water solubility (Doxorubicin hydrochloride, DOXO and Docetaxel, DCTXL) and of Iron Oxide Nanoparticles for MRI imaging. The outer shell remained unchanged among the platforms, resulting in un-modified cellular uptake and in vivo biodistribution. We demonstrate that the choice of PUR core allowed a high entrapment efficiency of all drugs, superior or comparable to previously reported results, and that higher core hydrophilicity enhances the loading efficiency of the hydrophilic DOXO and the MRI contrast effect. Moreover, we show that changing the PUR core did not alter the surface properties of the carriers, since all particles showed a similar behavior in terms of cell internalization and in vivo biodistribution. We also show that PUR PNPs have high passive tumor accumulation and that they can efficient co-deliver the two drugs to the tumor, reaching an 11-fold higher DOXO/DCTXL ratio in tumor as compared to free drugs. STATEMENT OF SIGNIFICANCE: Exploiting the synergistic action of multiple chemotherapeutics is a promising strategy to improve the outcome of cancer patients, as different agents can simultaneously engage different features of tumor cells and/or their microenvironment. Unfortunately, the choice is limited to drugs with similar pharmacokinetics that can concomitantly accumulate in tumors. To expand the spectrum of agents that can be delivered in combination, we propose a multi-compartmental core-shell nanoparticles approach, in which the core is made of biomaterials with high affinity for drugs of different physical properties. We successfully co-encapsulated Doxorubicin Hydrochloride, Docetaxel, and contrast agents and achieved a significantly higher concomitant accumulation in tumor versus free drugs, demonstrating that nanoparticles can improve synergistic cancer chemotherapy.
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Affiliation(s)
- C Mattu
- Politecnico di Torino, DIMEAS C.so Duca degli Abruzzi 24, 10129 Torino, Italy; Department of Nanomedicine, Houston Methodist Hospital Research Institute, Houston, TX 77030, USA
| | - G Brachi
- Politecnico di Torino, DIMEAS C.so Duca degli Abruzzi 24, 10129 Torino, Italy; Department of Nanomedicine, Houston Methodist Hospital Research Institute, Houston, TX 77030, USA
| | - L Menichetti
- Institute of Clinical Physiology, National Research Council, Via G. Moruzzi, 1 56124 Pisa, Italy; Fondazione Regione Toscana G. Monasterio, Via Giuseppe Moruzzi 1, Pisa 56124, Italy
| | - A Flori
- Fondazione Regione Toscana G. Monasterio, Via Giuseppe Moruzzi 1, Pisa 56124, Italy
| | - P Armanetti
- Institute of Clinical Physiology, National Research Council, Via G. Moruzzi, 1 56124 Pisa, Italy
| | - E Ranzato
- DiSIT-Dipartimento di Scienze e Innovazione Tecnologica, University of Piemonte Orientale, piazza Sant'Eusebio 5, Vercelli 13100, Italy
| | - S Martinotti
- DiSIT-Dipartimento di Scienze e Innovazione Tecnologica, University of Piemonte Orientale, Viale Teresa Michel 11, Alessandria 15121, Italy
| | - S Nizzero
- Department of Nanomedicine, Houston Methodist Hospital Research Institute, Houston, TX 77030, USA; Applied Physics Graduate Program, Smalley-Curl Institute, Rice University, Houston, TX 77005, USA
| | - M Ferrari
- Department of Nanomedicine, Houston Methodist Hospital Research Institute, Houston, TX 77030, USA; Department of Medicine, Weill Cornell Medical College, New York, NY 10065, USA
| | - G Ciardelli
- Politecnico di Torino, DIMEAS C.so Duca degli Abruzzi 24, 10129 Torino, Italy
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199
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Donnelly EM, Kubelick KP, Dumani DS, Emelianov SY. Photoacoustic Image-Guided Delivery of Plasmonic-Nanoparticle-Labeled Mesenchymal Stem Cells to the Spinal Cord. NANO LETTERS 2018; 18:6625-6632. [PMID: 30160124 DOI: 10.1021/acs.nanolett.8b03305] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Regenerative therapies using stem cells have great potential for treating neurodegenerative diseases and traumatic injuries in the spinal cord. In spite of significant research efforts, many therapies fail at the clinical phase. As stem cell technologies advance toward clinical use, there is a need for a minimally invasive, safe, affordable, and real-time imaging technique that allows for the accurate and safe monitoring of stem cell delivery in the operating room. In this work, we present a combined ultrasound and photoacoustic imaging tool to provide image-guided needle placement and monitoring of nanoparticle-labeled stem cell delivery into the spinal cord. We successfully tagged stem cells using gold nanospheres and provided image-guided delivery of stem cells into the spinal cord in real-time, detecting as few as 1000 cells. Ultrasound and photoacoustic imaging was used to guide needle placement for direct stem cell injection to minimize the risk of needle shear and accidental injury and to improve therapeutic outcomes with accurate, localized stem cell delivery. Following injections of various volumes of cells, three-dimensional ultrasound and photoacoustic images allowed the visualization of stem cell distribution along the spinal cord, showing the potential to monitor the migration of the cells in the future. The feasibility of quantitative imaging was also shown by correlating the total photoacoustic signal over the imaging volume to the volume of cells injected. Overall, the presented method may allow clinicians to utilize imaged-guided delivery for more accurate and safer stem cell delivery to the spinal cord.
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Affiliation(s)
- Eleanor M Donnelly
- School of Electrical and Computer Engineering , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
| | - Kelsey P Kubelick
- Wallace H. Coulter Department of Biomedical Engineering , Georgia Institute of Technology and Emory University School of Medicine , Atlanta , Georgia 30332 , United States
| | - Diego S Dumani
- School of Electrical and Computer Engineering , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
- Wallace H. Coulter Department of Biomedical Engineering , Georgia Institute of Technology and Emory University School of Medicine , Atlanta , Georgia 30332 , United States
| | - Stanislav Y Emelianov
- School of Electrical and Computer Engineering , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
- Wallace H. Coulter Department of Biomedical Engineering , Georgia Institute of Technology and Emory University School of Medicine , Atlanta , Georgia 30332 , United States
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200
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Chen J, Li X, Liu X, Yan H, Xie Z, Sheng Z, Gong X, Wang L, Liu X, Zhang P, Zheng H, Song L, Liu C. Hybrid MoSe 2-indocyanine green nanosheets as a highly efficient phototheranostic agent for photoacoustic imaging guided photothermal cancer therapy. Biomater Sci 2018; 6:1503-1516. [PMID: 29633765 DOI: 10.1039/c8bm00104a] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Phototheranostic technology based on photoacoustic imaging (PAI) and photothermal therapy (PTT) is emerging as a powerful tool for tumor theranostic applications. For effective tumor eradication, a novel PAI/PTT theranostic nanoagent with an excellent optical absorption and photothermal capability is highly desired. Herein, we present a new PAI/PTT nanohybrid named sMoSe2-ICG NSs by covalently conjugating aminated indocyanine green (ICG) onto a single layer of molybdenum selenide nanosheets (sMoSe2 NSs). We first validate the sMoSe2-ICG NS agent for the PAI and PTT effect in vitro and then use it for highly-sensitive PAI guided highly efficient tumor PTT in vivo. The sMoSe2-ICG NS hybrid possesses several advantages for PAI/PTT applications: (1) the sMoSe2-ICG NSs have strong absorbance in the broad near-infrared (NIR) region, enabling a highly efficient PAI/PTT theranostic effect and the selection of the most widely used excitation wavelength of 808 nm for PTT; (2) the photothermal ability of ICG in sMoSe2-ICG NSs is augmented due to ICG aggregation induced fluorescence quenching and the re-absorbance of ICG fluorescence by sMoSe2 NSs, which further enhances the PAI/PTT theranostic effect. (3) The characteristic absorption peak of sMoSe2-ICG NSs is red-shifted compared to free ICG, resulting in a higher PAI signal-to-noise ratio (SNR) in vivo. Thus, combined with the good stability, high biocompatibility and minimal toxicity properties, the obtained sMoSe2-ICG NSs hybrid has bright prospects for use in future PAI/PTT clinical applications.
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Affiliation(s)
- Jingqin Chen
- Research Laboratory for Biomedical Optics and Molecular Imaging, Shenzhen Key Laboratory for Molecular Imaging, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China.
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