1
|
Tamura I, Sakamoto DM, Yi B, Saito Y, Yamada N, Morimoto J, Takakusagi Y, Kuroda M, Kubota SI, Yatabe H, Kobayashi M, Harada H, Tainaka K, Sando S. Click3D: Click reaction across deep tissues for whole-organ 3D fluorescence imaging. SCIENCE ADVANCES 2024; 10:eado8471. [PMID: 39018410 PMCID: PMC466963 DOI: 10.1126/sciadv.ado8471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Accepted: 06/11/2024] [Indexed: 07/19/2024]
Abstract
Click chemistry offers various applications through efficient bioorthogonal reactions. In bioimaging, pretargeting strategies have often been used, using click reactions between molecular probes with a click handle and reporter molecules that make them observable. Recent efforts have integrated tissue-clearing techniques with fluorescent labeling through click chemistry, allowing high-resolution three-dimensional fluorescence imaging. Nevertheless, these techniques have faced a challenge in limited staining depth, confining their use to imaging tissue sections or partial organs. In this study, we introduce Click3D, a method for thoroughly staining whole organs using click chemistry. We identified click reaction conditions that improve staining depth with our custom-developed assay. The Click3D protocol exhibits a greater staining depth compared to conventional methods. Using Click3D, we have successfully achieved whole-kidney imaging of nascent RNA and whole-tumor imaging of hypoxia. We have also accomplished whole-brain imaging of hypoxia by using the clickable hypoxia probe, which has a small size and, therefore, has high permeability to cross the blood-brain barrier.
Collapse
Affiliation(s)
- Iori Tamura
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Daichi M. Sakamoto
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Bo Yi
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yutaro Saito
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Naoki Yamada
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Jumpei Morimoto
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yoichi Takakusagi
- Quantum Hyperpolarized MRI Research Team, Institute for Quantum Life Science, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
- Institute for Quantum Medical Science, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
| | - Masafumi Kuroda
- International Research Center for Neurointelligence (WPI-IRCN), The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Shimpei I. Kubota
- Division of Molecular Psychoimmunology, Institute for Genetic Medicine, Graduate School of Medicine, Hokkaido University, Kita-15, Nishi-7, Kita-ku, Sapporo, Hokkaido 060-0815, Japan
| | - Hiroyuki Yatabe
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Minoru Kobayashi
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan
- Department of Genome Dynamics, Radiation Biology Center, Graduate School of Biostudies, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Hiroshi Harada
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan
- Department of Genome Dynamics, Radiation Biology Center, Graduate School of Biostudies, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Kazuki Tainaka
- Department of System Pathology for Neurological Disorders, Brain Research Institute, Niigata University, 1-757 Asahimachidori, Chuo-ku, Niigata 951-8585, Japan
| | - Shinsuke Sando
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| |
Collapse
|
2
|
Sun W, Zhang L, Xing L, He Z, Zhang Y, Gao F. Projected algebraic reconstruction technique-network for high-fidelity diffuse fluorescence tomography reconstruction. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA. A, OPTICS, IMAGE SCIENCE, AND VISION 2024; 41:988-999. [PMID: 38856406 DOI: 10.1364/josaa.517742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 04/01/2024] [Indexed: 06/11/2024]
Abstract
We propose a model-driven projected algebraic reconstruction technique (PART)-network (PART-Net) that leverages the advantages of the traditional model-based method and the neural network to improve the imaging quality of diffuse fluorescence tomography. In this algorithm, nonnegative prior information is incorporated into the ART iteration process to better guide the optimization process, and thereby improve imaging quality. On this basis, PART in conjunction with a residual convolutional neural network is further proposed to obtain high-fidelity image reconstruction. The numerical simulation results demonstrate that the PART-Net algorithm effectively improves noise robustness and reconstruction accuracy by at least 1-2 times and exhibits superiority in spatial resolution and quantification, especially for a small-sized target (r=2m m), compared with the traditional ART algorithm. Furthermore, the phantom and in vivo experiments verify the effectiveness of the PART-Net, suggesting strong generalization capability and a great potential for practical applications.
Collapse
|
3
|
Ur Rahman F, Shah AB, Muhammad M, khan E, Ataya FS, Batiha GES. Antioxidant, antibacterial, enzyme inhibition and fluorescence characteristics of unsymmetrical thiourea derivatives. Heliyon 2024; 10:e31563. [PMID: 38826706 PMCID: PMC11141368 DOI: 10.1016/j.heliyon.2024.e31563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 05/15/2024] [Accepted: 05/17/2024] [Indexed: 06/04/2024] Open
Abstract
A series of six unsymmetrical thiourea derivatives, namely 1-cyclohexyl-3-(pyridin-2-yl) thiourea (1), 1-cyclohexyl-3-(3-methylpyridin-2-yl)thiourea (2), 1-cyclohexyl-3-(2,4-dimethylphenyl) thiourea (3), 1-(4-chlorophenyl)-3-cyclohexylthiourea (4), 1-(3-methylpyridin-2-yl)-3-phenylthiourea (5), and 1-(3-chlorophenyl)-3-phenylthiourea (6), were successfully synthesized via reaction between different amines with isothiocyanates under a non-catalytic environment. Structural elucidation of compounds (1-6) was performed using FT-IR and NMR (1H and 13C) spectroscopy. The infrared spectra displayed characteristic stretching vibrations, while the 13C NMR chemical shifts of the thiourea moiety (C[bond, double bond]S) were observed in the range of 179.1-181.4 ppm. The antioxidative and antimicrobial properties of the compounds were assessed, as well as their inhibitory effects on acetylcholinesterase and butyrylcholinesterase were evaluated. In order to analyze the fluorescence characteristics of each compound (1-6), the excitation (λex) and emission (λem) wavelengths were scanned within the range of 250-750 nm, with the solvent blank serving as a standard. It was observed that when dissolved in acetone, toluene, tetrahydrofuran, and ethyl acetate, these compounds exhibited emission peaks ranging from 367 to 581 nm and absorption peaks ranging from 275 to 432 nm.
Collapse
Affiliation(s)
- Faizan Ur Rahman
- Department of Chemistry, University of Malakand, Dir Lower, 18800, Khyber Pakhtunkhwa, Pakistan
| | - Abdul Bari Shah
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Mian Muhammad
- Department of Chemistry, University of Malakand, Dir Lower, 18800, Khyber Pakhtunkhwa, Pakistan
| | - Ezzat khan
- Department of Chemistry, University of Malakand, Dir Lower, 18800, Khyber Pakhtunkhwa, Pakistan
| | - Farid S. Ataya
- Department of Biochemistry, College of Science, King Saud University, PO Box 2455, Riyadh, 11451, Saudi Arabia
| | - Gaber El-Saber Batiha
- Department of Pharmacology and Therapeutics, Faculty of Veterinary Medicine, Damanhour University, Damanhour, 22511, AlBeheira, Egypt
| |
Collapse
|
4
|
Hu Y, Wu Y, Li L, Gu L, Zhu X, Jiang J, Ren W. Simultaneous reconstruction of 3D fluorescence distribution and object surface using structured light illumination and dual-camera detection. OPTICS EXPRESS 2024; 32:15760-15773. [PMID: 38859218 DOI: 10.1364/oe.517189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Accepted: 02/26/2024] [Indexed: 06/12/2024]
Abstract
Fluorescence molecular tomography (FMT) serves as a noninvasive modality for visualizing volumetric fluorescence distribution within biological tissues, thereby proving to be an invaluable imaging tool for preclinical animal studies. The conventional FMT relies upon a point-by-point raster scan strategy, enhancing the dataset for subsequent reconstruction but concurrently elongating the data acquisition process. The resultant diminished temporal resolution has persistently posed a bottleneck, constraining its utility in dynamic imaging studies. We introduce a novel system capable of simultaneous FMT and surface extraction, which is attributed to the implementation of a rapid line scanning approach and dual-camera detection. The system performance was characterized through phantom experiments, while the influence of scanning line density on reconstruction outcomes has been systematically investigated via both simulation and experiments. In a proof-of-concept study, our approach successfully captures a moving fluorescence bolus in three dimensions with an elevated frame rate of approximately 2.5 seconds per frame, employing an optimized scan interval of 5 mm. The notable enhancement in the spatio-temporal resolution of FMT holds the potential to broaden its applications in dynamic imaging tasks, such as surgical navigation.
Collapse
|
5
|
Xu Y, Chen J, Zhang Y, Zhang P. Recent Progress in Peptide-Based Molecular Probes for Disease Bioimaging. Biomacromolecules 2024; 25:2222-2242. [PMID: 38437161 DOI: 10.1021/acs.biomac.3c01413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2024]
Abstract
Recent strides in molecular pathology have unveiled distinctive alterations at the molecular level throughout the onset and progression of diseases. Enhancing the in vivo visualization of these biomarkers is crucial for advancing disease classification, staging, and treatment strategies. Peptide-based molecular probes (PMPs) have emerged as versatile tools due to their exceptional ability to discern these molecular changes with unparalleled specificity and precision. In this Perspective, we first summarize the methodologies for crafting innovative functional peptides, emphasizing recent advancements in both peptide library technologies and computer-assisted peptide design approaches. Furthermore, we offer an overview of the latest advances in PMPs within the realm of biological imaging, showcasing their varied applications in diagnostic and therapeutic modalities. We also briefly address current challenges and potential future directions in this dynamic field.
Collapse
Affiliation(s)
- Ying Xu
- School of Biomedical Engineering and State Key Laboratory of Advanced Medical Materials and Devices, ShanghaiTech University, Shanghai 201210, China
| | - Junfan Chen
- School of Biomedical Engineering and State Key Laboratory of Advanced Medical Materials and Devices, ShanghaiTech University, Shanghai 201210, China
| | - Yuan Zhang
- Department of Pulmonary and Critical Care Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
| | - Pengcheng Zhang
- School of Biomedical Engineering and State Key Laboratory of Advanced Medical Materials and Devices, ShanghaiTech University, Shanghai 201210, China
| |
Collapse
|
6
|
Li X, Chen H, Su Z, Zhao Q, Wang Y, Li N, Li S. Brightness Strategies toward NIR-II Emissive Conjugated Materials: Molecular Design, Application, and Future Prospects. ACS APPLIED BIO MATERIALS 2024. [PMID: 38556979 DOI: 10.1021/acsabm.4c00137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Recent advances have been made in second near-infrared (NIR-II) fluorescence bioimaging and many related applications because of its advantages of deep penetration, high resolution, minimal invasiveness, and good dynamic visualization. To achieve high-performance NIR-II fluorescence bioimaging, various materials and probes with bright NIR-II emission have been extensively explored in the past few years. Among these NIR-II emissive materials, conjugated polymers and conjugated small molecules have attracted wide interest due to their native biosafety and tunable optical performance. This review summarizes the brightness strategies available for NIR-II emissive conjugated materials and highlights the recent developments in NIR-II fluorescence bioimaging. A concise, detailed overview of the molecular design and regulatory approaches is provided in terms of their high brightness, long wavelengths, and superior imaging performance. Then, various typical cases in which bright conjugated materials are used as NIR-II probes are introduced by providing step-by-step examples. Finally, the current problems and challenges associated with accessing NIR-II emissive conjugated materials for bright NIR-II fluorescence bioimaging are briefly discussed, and the significance and future prospects of these materials are proposed to offer helpful guidance for the development of NIR-II emissive materials.
Collapse
Affiliation(s)
- Xiliang Li
- College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, P.R. China
| | - Huan Chen
- College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, P.R. China
| | - Zihan Su
- College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, P.R. China
| | - Qi Zhao
- College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, P.R. China
| | - Yu Wang
- College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, P.R. China
| | - Ning Li
- College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, P.R. China
| | - Shengliang Li
- College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, P.R. China
| |
Collapse
|
7
|
Pogue BW, Zhu TC, Ntziachristos V, Wilson BC, Paulsen KD, Gioux S, Nordstrom R, Pfefer TJ, Tromberg BJ, Wabnitz H, Yodh A, Chen Y, Litorja M. AAPM Task Group Report 311: Guidance for performance evaluation of fluorescence-guided surgery systems. Med Phys 2024; 51:740-771. [PMID: 38054538 DOI: 10.1002/mp.16849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 11/02/2023] [Accepted: 11/06/2023] [Indexed: 12/07/2023] Open
Abstract
The last decade has seen a large growth in fluorescence-guided surgery (FGS) imaging and interventions. With the increasing number of clinical specialties implementing FGS, the range of systems with radically different physical designs, image processing approaches, and performance requirements is expanding. This variety of systems makes it nearly impossible to specify uniform performance goals, yet at the same time, utilization of different devices in new clinical procedures and trials indicates some need for common knowledge bases and a quality assessment paradigm to ensure that effective translation and use occurs. It is feasible to identify key fundamental image quality characteristics and corresponding objective test methods that should be determined such that there are consistent conventions across a variety of FGS devices. This report outlines test methods, tissue simulating phantoms and suggested guidelines, as well as personnel needs and professional knowledge bases that can be established. This report frames the issues with guidance and feedback from related societies and agencies having vested interest in the outcome, coming from an independent scientific group formed from academics and international federal agencies for the establishment of these professional guidelines.
Collapse
Affiliation(s)
- Brian W Pogue
- Department of Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin, USA
- Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire, USA
| | - Timothy C Zhu
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Vasilis Ntziachristos
- Institute for Biological and Medical Imaging, Technical University of Munich, Helmholtz Zentrum Munich, Munich, Germany
| | - Brian C Wilson
- Department of Medical Biophysics, University of Toronto, University Health Network, Toronto, Ontario, Canada
| | - Keith D Paulsen
- Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire, USA
| | - Sylvain Gioux
- Department of Biomedical Engineering, University of Strasbourg, Strasbourg, France
| | - Robert Nordstrom
- Cancer Imaging Program, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - T Joshua Pfefer
- Center for Devices and Radiological Health, US Food and Drug Administration, Silver Spring, Maryland, USA
| | - Bruce J Tromberg
- National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, Maryland, USA
| | | | - Arjun Yodh
- Department of Physics, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Yu Chen
- Department of Biomedical Engineering, University of Massachusetts Amherst, Amherst, Massachusetts, USA
| | - Maritoni Litorja
- Sensor Science Division, National Institute of Standards and Technology, Gaithersburg, Maryland, USA
| |
Collapse
|
8
|
Brollo PP, Bresadola V. Enhancing visualization and guidance in general surgery: a comprehensive and narrative review of the current cutting-edge technologies and future perspectives. J Gastrointest Surg 2024; 28:179-185. [PMID: 38445941 DOI: 10.1016/j.gassur.2023.12.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 11/25/2023] [Accepted: 12/08/2023] [Indexed: 03/07/2024]
Abstract
BACKGROUND In the last decade, there has been a great effort in developing new technologies to enhance surgical visualization and guidance. This comprehensive and narrative review aimed to provide a wide and extensive overview of the current state of the art on this topic and their near-future perspectives linked to the development of artificial intelligence (AI), by focusing on the most recent and relevant literature. METHODS A comprehensive and narrative review of the literature was performed by searching specific terms on PubMed/MEDLINE, Scopus, and Embase databases, assessing the current state of the art on this topic. RESULTS Fluorescence-guided surgery, contrast-enhanced ultrasound (CEUS), ultra-high frequency ultrasound (UHFUS), photoacoustic imaging (PAI), and augmented reality (AR) are boosting the field of image-guided techniques as the rapid development of AI in surgery is promising a more automated decision-making and surgical movements in the operating room. CONCLUSION Fluorescence-guided surgery, CEUS, UHFUS, PAI, and AR are becoming crucial to give surgeons a new level of information during the intervention, with the right timing and sequence, and represent the future of surgery. As many more controlled studies are needed to validate the employment of these technologies, the next generation of surgeons must become more familiar with the basics of AI to better incorporate new tools into the daily surgical practice of the future.
Collapse
Affiliation(s)
- Pier Paolo Brollo
- Department of Medicine, General Surgery Department and Simulation Center, Academic Hospital of Udine, University of Udine, Udine, Italy; General Surgical Oncology Department, Istituto di Ricovero e Cura a Carattere Scientifico Centro di Riferimento Oncologico di Aviano (Istituto Nazionale Tumori), Aviano, Italy.
| | - Vittorio Bresadola
- Department of Medicine, General Surgery Department and Simulation Center, Academic Hospital of Udine, University of Udine, Udine, Italy
| |
Collapse
|
9
|
Generating expression profiles of single living cells from Raman microscopy. Nat Biotechnol 2024:10.1038/s41587-023-02083-1. [PMID: 38200121 DOI: 10.1038/s41587-023-02083-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
|
10
|
Chang B, Chen J, Bao J, Sun T, Cheng Z. Molecularly Engineered Room-Temperature Phosphorescence for Biomedical Application: From the Visible toward Second Near-Infrared Window. Chem Rev 2023; 123:13966-14037. [PMID: 37991875 DOI: 10.1021/acs.chemrev.3c00401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2023]
Abstract
Phosphorescence, characterized by luminescent lifetimes significantly longer than that of biological autofluorescence under ambient environment, is of great value for biomedical applications. Academic evidence of fluorescence imaging indicates that virtually all imaging metrics (sensitivity, resolution, and penetration depths) are improved when progressing into longer wavelength regions, especially the recently reported second near-infrared (NIR-II, 1000-1700 nm) window. Although the emission wavelength of probes does matter, it is not clear whether the guideline of "the longer the wavelength, the better the imaging effect" is still suitable for developing phosphorescent probes. For tissue-specific bioimaging, long-lived probes, even if they emit visible phosphorescence, enable accurate visualization of large deep tissues. For studies dealing with bioimaging of tiny biological architectures or dynamic physiopathological activities, the prerequisite is rigorous planning of long-wavelength phosphorescence, being aware of the cooperative contribution of long wavelengths and long lifetimes for improving the spatiotemporal resolution, penetration depth, and sensitivity of bioimaging. In this Review, emerging molecular engineering methods of room-temperature phosphorescence are discussed through the lens of photophysical mechanisms. We highlight the roles of phosphorescence with emission from visible to NIR-II windows toward bioapplications. To appreciate such advances, challenges and prospects in rapidly growing studies of room-temperature phosphorescence are described.
Collapse
Affiliation(s)
- Baisong Chang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei 430070, China
| | - Jie Chen
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei 430070, China
| | - Jiasheng Bao
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei 430070, China
| | - Taolei Sun
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei 430070, China
| | - Zhen Cheng
- State Key Laboratory of Drug Research, Molecular Imaging Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- Shandong Laboratory of Yantai Drug Discovery, Bohai Rim Advanced Research Institute for Drug Discovery, Yantai, Shandong 264000, China
| |
Collapse
|
11
|
Zhang P, Li W, Liu C, Qin F, Lu Y, Qin M, Hou Y. Molecular imaging of tumour-associated pathological biomarkers with smart nanoprobe: From "Seeing" to "Measuring". EXPLORATION (BEIJING, CHINA) 2023; 3:20230070. [PMID: 38264683 PMCID: PMC10742208 DOI: 10.1002/exp.20230070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 09/18/2023] [Indexed: 01/25/2024]
Abstract
Although the extraordinary progress has been made in molecular biology, the prevention of cancer remains arduous. Most solid tumours exhibit both spatial and temporal heterogeneity, which is difficult to be mimicked in vitro. Additionally, the complex biochemical and immune features of tumour microenvironment significantly affect the tumour development. Molecular imaging aims at the exploitation of tumour-associated molecules as specific targets of customized molecular probe, thereby generating image contrast of tumour markers, and offering opportunities to non-invasively evaluate the pathological characteristics of tumours in vivo. Particularly, there are no "standard markers" as control in clinical imaging diagnosis of individuals, so the tumour pathological characteristics-responsive nanoprobe-based quantitative molecular imaging, which is able to visualize and determine the accurate content values of heterogeneous distribution of pathological molecules in solid tumours, can provide criteria for cancer diagnosis. In this context, a variety of "smart" quantitative molecular imaging nanoprobes have been designed, in order to provide feasible approaches to quantitatively visualize the tumour-associated pathological molecules in vivo. This review summarizes the recent achievements in the designs of these nanoprobes, and highlights the state-of-the-art technologies in quantitative imaging of tumour-associated pathological molecules.
Collapse
Affiliation(s)
- Peisen Zhang
- College of Life Science and TechnologyBeijing University of Chemical TechnologyBeijingChina
- Department of ChemistryUniversity of TorontoTorontoOntarioCanada
| | - Wenyue Li
- College of Life Science and TechnologyBeijing University of Chemical TechnologyBeijingChina
| | - Chuang Liu
- College of Life Science and TechnologyBeijing University of Chemical TechnologyBeijingChina
| | - Feng Qin
- Department of Neurosurgery and National Chengdu Center for Safety Evaluation of DrugsState Key Laboratory of Biotherapy/Collaborative Innovation Center for BiotherapyWest China Hospital, Sichuan UniversityChengduChina
| | - Yijie Lu
- Department of ChemistryUniversity of TorontoTorontoOntarioCanada
| | - Meng Qin
- Department of Neurosurgery and National Chengdu Center for Safety Evaluation of DrugsState Key Laboratory of Biotherapy/Collaborative Innovation Center for BiotherapyWest China Hospital, Sichuan UniversityChengduChina
| | - Yi Hou
- College of Life Science and TechnologyBeijing University of Chemical TechnologyBeijingChina
| |
Collapse
|
12
|
Zhu B, Hendricks J, Morton JE, Rasmussen JC, Janssen C, Shah MN, Sevick-Muraca EM. Near-Infrared Fluorescence Tomography and Imaging of Ventricular Cerebrospinal Fluid Flow and Extracranial Outflow in Non-Human Primates. IEEE TRANSACTIONS ON MEDICAL IMAGING 2023; 42:3555-3565. [PMID: 37440390 PMCID: PMC10764096 DOI: 10.1109/tmi.2023.3295247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/15/2023]
Abstract
The role of the lymphatics in the clearance of cerebrospinal fluid (CSF) from the brain has been implicated in multiple neurodegenerative conditions. In premature infants, intraventricular hemorrhage causes increased CSF production and, if clearance is impeded, hydrocephalus and severe developmental disabilities can result. In this work, we developed and deployed near-infrared fluorescence (NIRF) tomography and imaging to assess CSF ventricular dynamics and extracranial outflow in similarly sized, intact non-human primates (NHP) following microdose of indocyanine green (ICG) administered to the right lateral ventricle. Fluorescence optical tomography measurements were made by delivering ~10 mW of 785 nm light to the scalp by sequential illumination of 8 fiber optics and imaging the 830 nm emission light collected from 22 fibers using a gallium arsenide intensified, charge coupled device. Acquisition times were 16 seconds. Image reconstruction used the diffusion approximation and hard-priors obtained from MRI to enable dynamic mapping of ICG-laden CSF ventricular dynamics and drainage into the subarachnoid space (SAS) of NHPs. Subsequent, planar NIRF imaging of the scalp confirmed extracranial efflux into SAS and abdominal imaging showed ICG clearance through the hepatobiliary system. Necropsy confirmed imaging results and showed that deep cervical lymph nodes were the routes of extracranial CSF egress. The results confirm the ability to use trace doses of ICG to monitor ventricular CSF dynamics and extracranial outflow in NHP. The techniques may also be feasible for similarly-sized infants and children who may suffer impairment of CSF outflow due to intraventricular hemorrhage.
Collapse
Affiliation(s)
- Banghe Zhu
- Center for Molecular Imaging, The Brown Foundation Institute of Molecular Medicine, and Department of Pediatric Surgery, The University of Texas Health Science Center, Houston, Texas 77030
| | - Jonathan Hendricks
- Department of Pediatric Surgery, The University of Texas Health Science Center, Houston, Texas 77030
| | - Janelle E. Morton
- Center for Molecular Imaging, The Brown Foundation Institute of Molecular Medicine, The University of Texas Health Science Center, Houston, Texas 77030
| | - John C. Rasmussen
- Center for Molecular Imaging, The Brown Foundation Institute of Molecular Medicine, The University of Texas Health Science Center, Houston, Texas 77030
| | - Christopher Janssen
- Center for Laboratory Animal Medicine and Care, The University of Texas Health Science Center, Houston, Texas 77030
| | - Manish N. Shah
- Department of Pediatric Surgery, The University of Texas Health Science Center, Houston, Texas 77030
| | - Eva Marie Sevick-Muraca
- Center for Molecular Imaging, The Brown Foundation Institute of Molecular Medicine, and Department of Pediatric Surgery, The University of Texas Health Science Center, Houston, Texas 77030
| |
Collapse
|
13
|
Bonnefond S, Reynaud A, Cazareth J, Abélanet S, Vassalli M, Brau F, Lippi GL. Nanoscatterer-Assisted Fluorescence Amplification Technique. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2875. [PMID: 37947721 PMCID: PMC10648225 DOI: 10.3390/nano13212875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 10/25/2023] [Accepted: 10/26/2023] [Indexed: 11/12/2023]
Abstract
Weak fluorescence signals, which are important in research and applications, are often masked by the background. Different amplification techniques are actively investigated. Here, a broadband, geometry-independent and flexible feedback scheme based on the random scattering of dielectric nanoparticles allows the amplification of a fluorescence signal by partial trapping of the radiation within the sample volume. Amplification of up to a factor of 40 is experimentally demonstrated in ultrapure water with dispersed TiO2 nanoparticles (30 to 50 nm in diameter) and fluorescein dye at 200 μmol concentration (pumped with 5 ns long, 3 mJ laser pulses at 490 nm). The measurements show a measurable reduction in linewidth at the emission peak, indicating that feedback-induced stimulated emission contributes to the large gain observed.
Collapse
Affiliation(s)
- Sylvain Bonnefond
- Université Côte d’Azur, UMR 7010 CNRS, Institut de Physique de Nice, 06560 Valbonne, France;
| | - Antoine Reynaud
- Université Côte d’Azur, UMR 7275 CNRS, Institut de Pharmacologie Moléculaire et Cellulaire, 06560 Valbonne, France; (A.R.); (J.C.); (S.A.); (F.B.)
| | - Julie Cazareth
- Université Côte d’Azur, UMR 7275 CNRS, Institut de Pharmacologie Moléculaire et Cellulaire, 06560 Valbonne, France; (A.R.); (J.C.); (S.A.); (F.B.)
| | - Sophie Abélanet
- Université Côte d’Azur, UMR 7275 CNRS, Institut de Pharmacologie Moléculaire et Cellulaire, 06560 Valbonne, France; (A.R.); (J.C.); (S.A.); (F.B.)
| | - Massimo Vassalli
- James Watt School of Engineering, University of Glasgow, Glasgow G12 8LT, UK;
| | - Frédéric Brau
- Université Côte d’Azur, UMR 7275 CNRS, Institut de Pharmacologie Moléculaire et Cellulaire, 06560 Valbonne, France; (A.R.); (J.C.); (S.A.); (F.B.)
| | - Gian Luca Lippi
- Université Côte d’Azur, UMR 7010 CNRS, Institut de Physique de Nice, 06560 Valbonne, France;
| |
Collapse
|
14
|
Pandey S, Das A, Sharma LG, Pandey LM, Dobbidi P. Exploring Multifunctional Response of Ca 10(PO 4) 6(OH) 2-K 0.5Na 0.5NbO 3 Ceramic Composite for Biomedical Applications. ACS Biomater Sci Eng 2023; 9:5687-5699. [PMID: 37734748 DOI: 10.1021/acsbiomaterials.3c01069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/23/2023]
Abstract
This study focuses on investigating the intriguing properties of Ca10(PO4)6(OH)2 (HAP)-K0.5Na0.5NbO3 (KNN) bioceramic composites, seeking to elucidate the relationship between their structural, electrical, biological, and optical behavior. The article begins with a close inspection of the O 1s spectra of the specimens obtained from X-ray photoelectron spectroscopy (XPS). The spectra reveal the peak related to lattice oxygen, O vacancy and the surface adsorbed O. The formed O vacancy strongly influences the changes in lattice parameters as observed from the X-ray diffraction (XRD) patterns. The frequency variation of the dielectric response for the composites in the radio frequency (RF) regime has electrical polarization effective for biomedical applications. Nyquist plots along with equivalent RC circuits further confirm that those electrical responses are mainly contributed from the grain boundaries. Adsorption dynamics of protein on the ceramic surface are investigated using bovine serum albumin (BSA), which established the major role of electrostatic interaction. Surface charge and O vacancies are modeled to understand the adsorption of protein and a linear correlation is reported. The role of O vacancies in modulating adsorption dynamics adds a new dimension to this study. The conformational change of BSA has also been considered by constructing the secondary structure following the protein-ceramic interaction. Excitingly, the composites are also found to be fluorescent active, a courtesy of the defects and vacancies leading to electron-hole recombination in the forbidden region. These promising properties envision an exciting future for HAP-KNN composites, especially in the domain of bioimaging and bone-tissue engineering.
Collapse
Affiliation(s)
- Subingya Pandey
- Department of Physics, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Apurba Das
- Department of Physics, Handique Girls' College, Guwahati 781001, Assam, India
| | - L Gayatri Sharma
- Department of Bioscience and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Lalit M Pandey
- Department of Bioscience and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Pamu Dobbidi
- Department of Physics, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| |
Collapse
|
15
|
Ergen PH, Shorter S, Ntziachristos V, Ovsepian SV. Neurotoxin-Derived Optical Probes for Biological and Medical Imaging. Mol Imaging Biol 2023; 25:799-814. [PMID: 37468801 PMCID: PMC10598172 DOI: 10.1007/s11307-023-01838-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 07/04/2023] [Accepted: 07/05/2023] [Indexed: 07/21/2023]
Abstract
The superb specificity and potency of biological toxins targeting various ion channels and receptors are of major interest for the delivery of therapeutics to distinct cell types and subcellular compartments. Fused with reporter proteins or labelled with fluorophores and nanocomposites, animal toxins and their detoxified variants also offer expanding opportunities for visualisation of a range of molecular processes and functions in preclinical models, as well as clinical studies. This article presents state-of-the-art optical probes derived from neurotoxins targeting ion channels, with discussions of their applications in basic and translational biomedical research. It describes the design and production of probes and reviews their applications with advantages and limitations, with prospects for future improvements. Given the advances in imaging tools and expanding research areas benefiting from the use of optical probes, described here resources should assist the discovery process and facilitate high-precision interrogation and therapeutic interventions.
Collapse
Affiliation(s)
- Pinar Helin Ergen
- Faculty of Engineering and Science, University of Greenwich London, Chatham Maritime, Kent, ME4 4TB, United Kingdom
| | - Susan Shorter
- Faculty of Engineering and Science, University of Greenwich London, Chatham Maritime, Kent, ME4 4TB, United Kingdom
| | - Vasilis Ntziachristos
- Chair of Biological Imaging at the Central Institute for Translational Cancer Research (TranslaTUM), School of Medicine, Technical University of Munich, 81675, Munich, Germany
- Institute of Biological and Medical Imaging, Helmholtz Zentrum München (GmbH), 85764, Neuherberg, Germany
- Munich Institute of Robotics and Machine Intelligence (MIRMI), Technical University of Munich, 80992, Munich, Germany
- DZHK (German Centre for Cardiovascular Research), partner site Munich Heart Alliance, Munich, Germany
| | - Saak Victor Ovsepian
- Faculty of Engineering and Science, University of Greenwich London, Chatham Maritime, Kent, ME4 4TB, United Kingdom.
| |
Collapse
|
16
|
Islam MS, VanderLaan D, Hickman J, Emelianov S, Dickson RM. Fluorescence-informed photoacoustic discrimination of multiple chromophores by lifetime mapping optically gated responses. PHOTOACOUSTICS 2023; 32:100529. [PMID: 37645258 PMCID: PMC10461196 DOI: 10.1016/j.pacs.2023.100529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Revised: 07/01/2023] [Accepted: 07/06/2023] [Indexed: 08/31/2023]
Abstract
Synchronously Amplified Photoacoustic Image Recovery (SAPhIRe) offers improved background suppression using non-linear properties of modulatable contrast agents. Using SAPhIRe, multiple contrast agents in the same absorption window can be detected independently based on their unique triplet-state lifetimes. Here, we have demonstrated the unmixing of rose bengal and eosin Y signals from solution based on triplet-state lifetime mapping using both fluorescence and photoacoustics. Varying the pump-probe delay enables resolution and recovery of fast-decaying rose bengal and of slowly decaying eosin Y modulated photoacoustic signals, resulting from optically gated triplet state residence. Distinct images were reconstructed within tissue-mimicking phantom using the fitting coefficients of triplet-state lifetimes. Fluorescence was used to screen for modulation prior to photoacoustic imaging. The results suggest that lifetime unmixing can be utilized to simultaneously detect multiple pathologies with overlapping spectra using photoacoustic imaging.
Collapse
Affiliation(s)
- Md S. Islam
- School of Chemistry & Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Donald VanderLaan
- School of Electrical & Computer Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Josie Hickman
- School of Chemistry & Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Stanislav Emelianov
- School of Electrical & Computer Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332, USA
| | - Robert M. Dickson
- School of Chemistry & Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332, USA
| |
Collapse
|
17
|
Cong W, Wang G. Fluorescence molecular tomography for quantum yield and lifetime. APPLIED OPTICS 2023; 62:5926-5931. [PMID: 37706945 DOI: 10.1364/ao.495129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 07/09/2023] [Indexed: 09/15/2023]
Abstract
Fluorescence molecular tomography (FMT) is a promising modality for noninvasive imaging of internal fluorescence agents in biological tissues, especially in small animal models, with applications in diagnosis, therapy, and drug design. In this paper, we present a fluorescent reconstruction algorithm that combines time-resolved fluorescence imaging data with photon-counting microcomputed tomography (PCMCT) images to estimate the quantum yield and lifetime of fluorescent markers in a mouse model. By incorporating PCMCT images, a permissible region of interest of fluorescence yield and lifetime can be roughly estimated as prior knowledge, reducing the number of unknown variables in the inverse problem and improving the image reconstruction stability. Our numerical experiments demonstrate the accuracy and stability of the proposed reconstruction method in the presence of data noise, achieving a reconstruction error of 0.02 ns for the fluorescence lifetime and an average relative error of 18% for quantum yield reconstruction.
Collapse
|
18
|
He F, Hou W, Lan Y, Gao W, Zhou M, Li J, Liu S, Yang B, Zhang J. High Contrast Detection of Carotid Neothrombus with Strong Near-Infrared Absorption Selenium Nanosphere Enhanced Photoacoustic Imaging. Int J Nanomedicine 2023; 18:4043-4054. [PMID: 37520300 PMCID: PMC10377622 DOI: 10.2147/ijn.s404743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 07/04/2023] [Indexed: 08/01/2023] Open
Abstract
Background Carotid artery thrombosis is the leading cause of stroke. Since there are no apparent symptoms in the early stages of carotid atherosclerosis onset, it causes a more significant clinical diagnosis. Photoacoustic (PA) imaging provides high contrast and good depth information, which has been used for the early detection and diagnosis of many diseases. Methods We investigated thrombus formation by using 20% ferric chloride (FeCl3) in the carotid arteries of KM mice for the thrombosis model. The near-infrared selenium/polypyrrole (Se@PPy) nanomaterials are easy to synthesize and have excellent optical absorption in vivo, which can be used as PA contrast agents to obtain thrombosis information. Results In vitro experiments showed that Se@PPy nanocomposites have fulfilling PA ability in the 700 nm to 900 nm wavelength range. In the carotid atherosclerosis model, maximum PA signal enhancement up to 3.44, 4.04, and 5.07 times was observed by injection of Se@PPy nanomaterials, which helped to diagnose the severity of carotid atherosclerosis. Conclusion The superior PA signal of Se@PPy nanomaterials can identify the extent of atherosclerotic carotid lesions, demonstrating the feasibility of PA imaging technology in diagnosing carotid thrombosis lesion formation. This study demonstrates nanocomposites and PA techniques for imaging and diagnosing carotid thrombosis in vivo.
Collapse
Affiliation(s)
- Fengbing He
- Qingyuan People’s Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, School of Biomedical Engineering, Guangzhou Medical University, Guangdong, People’s Republic of China
| | - Wenzhong Hou
- Qingyuan People’s Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, School of Biomedical Engineering, Guangzhou Medical University, Guangdong, People’s Republic of China
| | - Yintao Lan
- Qingyuan People’s Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, School of Biomedical Engineering, Guangzhou Medical University, Guangdong, People’s Republic of China
- Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangdong, People’s Republic of China
| | - Weijian Gao
- Qingyuan People’s Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, School of Biomedical Engineering, Guangzhou Medical University, Guangdong, People’s Republic of China
| | - Mengyu Zhou
- Qingyuan People’s Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, School of Biomedical Engineering, Guangzhou Medical University, Guangdong, People’s Republic of China
| | - Jinghang Li
- Qingyuan People’s Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, School of Biomedical Engineering, Guangzhou Medical University, Guangdong, People’s Republic of China
| | - Shutong Liu
- Qingyuan People’s Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, School of Biomedical Engineering, Guangzhou Medical University, Guangdong, People’s Republic of China
| | - Bin Yang
- Qingyuan People’s Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, School of Biomedical Engineering, Guangzhou Medical University, Guangdong, People’s Republic of China
| | - Jian Zhang
- Qingyuan People’s Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, School of Biomedical Engineering, Guangzhou Medical University, Guangdong, People’s Republic of China
| |
Collapse
|
19
|
Zhang X, Jia Y, Cui J, Zhang J, Cao X, Zhang L, Zhang G. Two-stage deep learning method for sparse-view fluorescence molecular tomography reconstruction. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA. A, OPTICS, IMAGE SCIENCE, AND VISION 2023; 40:1359-1371. [PMID: 37706737 DOI: 10.1364/josaa.489702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 05/23/2023] [Indexed: 09/15/2023]
Abstract
Fluorescence molecular tomography (FMT) is a preclinical optical tomographic imaging technique that can trace various physiological and pathological processes at the cellular or even molecular level. Reducing the number of FMT projection views can improve the data acquisition speed, which is significant in applications such as dynamic problems. However, a reduction in the number of projection views will dramatically aggravate the ill-posedness of the FMT inverse problem and lead to significant degradation of the reconstructed images. To deal with this problem, we have proposed a deep-learning-based reconstruction method for sparse-view FMT that only uses four perpendicular projection views and divides the image reconstruction into two stages: image restoration and inverse Radon transform. In the first stage, the projection views of the surface fluorescence are restored to eliminate the blur derived from photon diffusion through a fully convolutional neural network. In the second stage, another convolutional neural network is used to implement the inverse Radon transform between the restored projections from the first stage and the reconstructed transverse slices. Numerical simulation and phantom and mouse experiments are carried out. The results show that the proposed method can effectively deal with the image reconstruction problem of sparse-view FMT.
Collapse
|
20
|
Smith JT, Sinsuebphon N, Rudkouskaya A, Michalet X, Intes X, Barroso M. In vivo quantitative FRET small animal imaging: Intensity versus lifetime-based FRET. BIOPHYSICAL REPORTS 2023; 3:100110. [PMID: 37251213 PMCID: PMC10209493 DOI: 10.1016/j.bpr.2023.100110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 04/27/2023] [Indexed: 05/31/2023]
Abstract
Förster resonance energy transfer (FRET) microscopy is used in numerous biophysical and biomedical applications to monitor inter- and intramolecular interactions and conformational changes in the 2-10 nm range. FRET is currently being extended to in vivo optical imaging, its main application being in quantifying drug-target engagement or drug release in animal models of cancer using organic dye or nanoparticle-labeled probes. Herein, we compared FRET quantification using intensity-based FRET (sensitized emission FRET analysis with the three-cube approach using an IVIS imager) and macroscopic fluorescence lifetime (MFLI) FRET using a custom system using a time-gated-intensified charge-coupled device, for small animal optical in vivo imaging. The analytical expressions and experimental protocols required to quantify the product f D E of the FRET efficiency E and the fraction of donor molecules involved in FRET, f D , are described in detail for both methodologies. Dynamic in vivo FRET quantification of transferrin receptor-transferrin binding was acquired in live intact nude mice upon intravenous injection of a near-infrared-labeled transferrin FRET pair and benchmarked against in vitro FRET using hybridized oligonucleotides. Even though both in vivo imaging techniques provided similar dynamic trends for receptor-ligand engagement, we demonstrate that MFLI-FRET has significant advantages. Whereas the sensitized emission FRET approach using the IVIS imager required nine measurements (six of which are used for calibration) acquired from three mice, MFLI-FRET needed only one measurement collected from a single mouse, although a control mouse might be needed in a more general situation. Based on our study, MFLI therefore represents the method of choice for longitudinal preclinical FRET studies such as that of targeted drug delivery in intact, live mice.
Collapse
Affiliation(s)
- Jason T. Smith
- Center for Modeling, Simulation and Imaging in Medicine (CeMSIM), Rensselaer Polytechnic Institute, Troy, New York
| | - Nattawut Sinsuebphon
- Center for Modeling, Simulation and Imaging in Medicine (CeMSIM), Rensselaer Polytechnic Institute, Troy, New York
| | - Alena Rudkouskaya
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, New York
| | - Xavier Michalet
- Department of Chemistry & Biochemistry, University of California at Los Angeles, Los Angeles, California
| | - Xavier Intes
- Center for Modeling, Simulation and Imaging in Medicine (CeMSIM), Rensselaer Polytechnic Institute, Troy, New York
| | - Margarida Barroso
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, New York
| |
Collapse
|
21
|
Chen Y, Du M, Zhang J, Zhang G, Su L, Li K, Zhao F, Yi H, Wang L, Cao X. Generalized conditional gradient method with adaptive regularization parameters for fluorescence molecular tomography. OPTICS EXPRESS 2023; 31:18128-18146. [PMID: 37381530 DOI: 10.1364/oe.486339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 04/08/2023] [Indexed: 06/30/2023]
Abstract
Fluorescence molecular tomography (FMT) is an optical imaging technology with the ability of visualizing the three-dimensional distribution of fluorescently labelled probes in vivo. However, due to the light scattering effect and ill-posed inverse problems, obtaining satisfactory FMT reconstruction is still a challenging problem. In this work, to improve the performance of FMT reconstruction, we proposed a generalized conditional gradient method with adaptive regularization parameters (GCGM-ARP). In order to make a tradeoff between the sparsity and shape preservation of the reconstruction source, and to maintain its robustness, elastic-net (EN) regularization is introduced. EN regularization combines the advantages of L1-norm and L2-norm, and overcomes the shortcomings of traditional Lp-norm regularization, such as over-sparsity, over-smoothness, and non-robustness. Thus, the equivalent optimization formulation of the original problem can be obtained. To further improve the performance of the reconstruction, the L-curve is adopted to adaptively adjust the regularization parameters. Then, the generalized conditional gradient method (GCGM) is used to split the minimization problem based on EN regularization into two simpler sub-problems, which are determining the direction of the gradient and the step size. These sub-problems are addressed efficiently to obtain more sparse solutions. To assess the performance of our proposed method, a series of numerical simulation experiments and in vivo experiments were implemented. The experimental results show that, compared with other mathematical reconstruction methods, GCGM-ARP method has the minimum location error (LE) and relative intensity error (RIE), and the maximum dice coefficient (Dice) in the case of different sources number or shape, or Gaussian noise of 5%-25%. This indicates that GCGM-ARP has superior reconstruction performance in source localization, dual-source resolution, morphology recovery, and robustness. In conclusion, the proposed GCGM-ARP is an effective and robust strategy for FMT reconstruction in biomedical application.
Collapse
|
22
|
Smith JT, Sinsuebphon N, Rudkouskaya A, Michalet X, Intes X, Barroso M. in vivo quantitative FRET small animal imaging: intensity versus lifetime-based FRET. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.01.24.525411. [PMID: 36747671 PMCID: PMC9900789 DOI: 10.1101/2023.01.24.525411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Förster Resonance Energy Transfer (FRET) microscopy is used in numerous biophysical and biomedical applications to monitor inter- and intramolecular interactions and conformational changes in the 2-10 nm range. FRET is currently being extended to in vivo optical imaging, its main application being in quantifying drug-target engagement or drug release in animal models of cancer using organic dye or nanoparticle-labeled probes. Herein, we compared FRET quantification using intensity-based FRET (sensitized emission FRET analysis with the 3-cube approach using an IVIS imager) and macroscopic fluorescence lifetime (MFLI) FRET using a custom system using a time-gated ICCD, for small animal optical in vivo imaging. The analytical expressions and experimental protocols required to quantify the product f D E of the FRET efficiency E and the fraction of donor molecules involved in FRET, f D , are described in detail for both methodologies. Dynamic in vivo FRET quantification of transferrin receptor-transferrin binding was acquired in live intact nude mice upon intravenous injection of near infrared-labeled transferrin FRET pair and benchmarked against in vitro FRET using hybridized oligonucleotides. Even though both in vivo imaging techniques provided similar dynamic trends for receptor-ligand engagement, we demonstrate that MFLI FRET has significant advantages. Whereas the sensitized emission FRET approach using the IVIS imager required 9 measurements (6 of which are used for calibration) acquired from three mice, MFLI FRET needed only one measurement collected from a single mouse, although a control mouse might be needed in a more general situation. Based on our study, MFLI therefore represents the method of choice for longitudinal preclinical FRET studies such as that of targeted drug delivery in intact, live mice.
Collapse
Affiliation(s)
- Jason T. Smith
- Center for Modeling, Simulation and Imaging in Medicine (CeMSIM), Rensselaer Polytechnic Institute, Troy, NY 12180, USA
- Present address: Elephas, 1 Erdman Pl., Madison, WI 53705, USA
| | - Nattawut Sinsuebphon
- Center for Modeling, Simulation and Imaging in Medicine (CeMSIM), Rensselaer Polytechnic Institute, Troy, NY 12180, USA
- Present address: Assistive Technology and Medical Devices Research Center, National Science and Technology Development Agency, 12120 Pathum Thani, Thailand
| | - Alena Rudkouskaya
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY 12208, USA
| | - Xavier Michalet
- Department of Chemistry & Biochemistry, University of California at Los Angeles, Los Angeles, California, CA 90095, USA
| | - Xavier Intes
- Center for Modeling, Simulation and Imaging in Medicine (CeMSIM), Rensselaer Polytechnic Institute, Troy, NY 12180, USA
| | - Margarida Barroso
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY 12208, USA
| |
Collapse
|
23
|
Zhao M, Zhou M, Cao X, Feng J, Pogue BW, Paulsen KD, Jiang S. Stable tissue-mimicking phantoms for longitudinal multimodality imaging studies that incorporate optical, CT, and MRI contrast. JOURNAL OF BIOMEDICAL OPTICS 2023; 28:046006. [PMID: 37091909 PMCID: PMC10118137 DOI: 10.1117/1.jbo.28.4.046006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 03/30/2023] [Indexed: 05/03/2023]
Abstract
Significance Tissue phantoms that mimic the optical and radiologic properties of human or animal tissue play an important role in the development, characterization, and evaluation of imaging systems. Phantoms that are easily produced and stable for longitudinal studies are highly desirable. Aim A new type of long-lasting phantom was developed with commercially available materials and was assessed for fabrication ease, stability, and optical property control. Magnetic resonance imaging (MRI) and x-ray computed tomography (CT) contrast properties were also evaluated. Approach A systematic investigation of relationships between concentrations of skin-like pigments and composite optical properties was conducted to realize optical property phantoms in the red and near-infrared (NIR) wavelength range that also offered contrast for CT and MRI. Results Phantom fabrication time was < 1 h and did not involve any heating or cooling processes. Changes in optical properties were < 2 % over a 12-month period. Phantom optical and spectral features were similar to human soft tissue over the red to NIR wavelength ranges. Pigments used in the study also had CT and MRI contrasts for multimodality imaging studies. Conclusions The phantoms described here mimic optical properties of soft tissue and are suitable for multimodality imaging studies involving CT or MRI without adding secondary contrast agents.
Collapse
Affiliation(s)
- Mengyang Zhao
- Dartmouth College, Thayer School of Engineering, Hanover, New Hampshire, United States
| | - Mingwei Zhou
- Dartmouth College, Thayer School of Engineering, Hanover, New Hampshire, United States
| | - Xu Cao
- Dartmouth College, Thayer School of Engineering, Hanover, New Hampshire, United States
| | - Jinchao Feng
- Beijing University of Technology, Beijing Key Laboratory of Computational Intelligence and Intelligent System, Faculty of Information Technology, Beijing, China
| | - Brian W. Pogue
- Dartmouth College, Thayer School of Engineering, Hanover, New Hampshire, United States
| | - Keith D. Paulsen
- Dartmouth College, Thayer School of Engineering, Hanover, New Hampshire, United States
| | - Shudong Jiang
- Dartmouth College, Thayer School of Engineering, Hanover, New Hampshire, United States
- Address all correspondence to Shudong Jiang,
| |
Collapse
|
24
|
Hou SS, Yang J, Lee JH, Kwon Y, Calvo-Rodriguez M, Bao K, Ahn S, Kashiwagi S, Kumar ATN, Bacskai BJ, Choi HS. Near-infrared fluorescence lifetime imaging of amyloid-β aggregates and tau fibrils through the intact skull of mice. Nat Biomed Eng 2023; 7:270-280. [PMID: 36747008 PMCID: PMC10040441 DOI: 10.1038/s41551-023-01003-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 01/08/2023] [Indexed: 02/08/2023]
Abstract
Non-invasive methods for the in vivo detection of hallmarks of Alzheimer's disease can facilitate the study of the progression of the disease in mouse models and may enable its earlier diagnosis in humans. Here we show that the zwitterionic heptamethine fluorophore ZW800-1C, which has peak excitation and emission wavelengths in the near-infrared optical window, binds in vivo and at high contrast to amyloid-β deposits and to neurofibrillary tangles, and allows for the microscopic imaging of amyloid-β and tau aggregates through the intact skull of mice. In transgenic mouse models of Alzheimer's disease, we compare the performance of ZW800-1C with that of the two spectrally similar heptamethine fluorophores ZW800-1A and indocyanine green, and show that ZW800-1C undergoes a longer fluorescence-lifetime shift when bound to amyloid-β and tau aggregates than when circulating in blood vessels. ZW800-1C may prove advantageous for tracking the proteinic aggregates in rodent models of amyloid-β and tau pathologies.
Collapse
Affiliation(s)
- Steven S Hou
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Joyce Yang
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Jeong Heon Lee
- Gordon Center for Medical Imaging, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Yeseo Kwon
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Maria Calvo-Rodriguez
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Kai Bao
- Gordon Center for Medical Imaging, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Sung Ahn
- Gordon Center for Medical Imaging, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Satoshi Kashiwagi
- Gordon Center for Medical Imaging, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Anand T N Kumar
- Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Brian J Bacskai
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
| | - Hak Soo Choi
- Gordon Center for Medical Imaging, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
| |
Collapse
|
25
|
Chen J, Zhao N, Copello V, Ru Y, Burnstein KL, Yang Y. Accurate and Early Metastases Diagnosis in Live Animals With Multimodal X-ray and Optical Imaging. Int J Radiat Oncol Biol Phys 2023; 115:511-517. [PMID: 35931351 DOI: 10.1016/j.ijrobp.2022.07.1832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 07/02/2022] [Accepted: 07/23/2022] [Indexed: 01/11/2023]
Abstract
PURPOSE In vivo optical imaging systems are essential to track disease progression and evaluate therapeutic efficacy in animal studies. However, current approaches are limited by their inability to accurately capture 3-dimensional (3-D) image information. To overcome this hindrance, we adopted x-ray computed tomography (CT) as a prior for 3-D optical image reconstruction and further challenged the multimodal imaging performance with a metastasis model. METHODS AND MATERIALS The iSMAART system, an integrated small animal research platform, features coregistered high-quality quantitative optical tomography and CT. In the synergistic dual-modality imaging, CT provides both 3-D anatomy information and animal structure mesh for optical tomography reconstruction, which is performed using bioluminescence projections acquired from 4 orthogonal angles. The multimodal imaging system was challenged with a prostate cancer metastasis model, and a double-blind histopathology diagnosis was obtained to validate the imaging results. RESULTS The iSMAART located, visualized, and quantified early tumor metastases at the millimeter scale, and can accurately track deep tumors as small as 1.5 mm in live animals. Tumors metastasized into the liver, diaphragm, and tibia in 4 mice were all successfully diagnosed by the integrated tomographic imaging. CONCLUSIONS Instead of roughly comparing surface-light intensities, as traditionally performed in 2-dimensional optical imaging, iSMAART provides accurate tumor imaging and quantitative assessment capabilities with integrated CT and optical tomography for cancer metastasis research. With the powerful 3-D optical/CT imaging capability, iSMAART has the potential to tackle more complex research needs with higher targeting accuracy.
Collapse
Affiliation(s)
- Jiahao Chen
- Department of Engineering and Applied Physics, University of Science and Technology of China, Hefei, China
| | - Ning Zhao
- Department of Engineering and Applied Physics, University of Science and Technology of China, Hefei, China
| | - Valeria Copello
- Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, Florida
| | - Yi Ru
- Department of Pathology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Kerry L Burnstein
- Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, Florida; Department of Molecular and Cellular Pharmacology, Miller School of Medicine, University of Miami, Miami, Florida
| | - Yidong Yang
- Department of Radiation Oncology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China; School of Physical Sciences and Ion Medical Research Institute, University of Science and Technology of China, Hefei, Anhui, China.
| |
Collapse
|
26
|
Ratiometric Zinc Biosensor Based on Bioluminescence Resonance Energy Transfer: Trace Metal Ion Determination with Tunable Response. Int J Mol Sci 2022; 23:ijms232314936. [PMID: 36499262 PMCID: PMC9738544 DOI: 10.3390/ijms232314936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/18/2022] [Accepted: 11/23/2022] [Indexed: 12/03/2022] Open
Abstract
Determination of metal ions such as zinc in solution remains an important task in analytical and biological chemistry. We describe a novel zinc ion biosensing approach using a carbonic anhydrase-Oplophorus luciferase fusion protein that employs bioluminescence resonance energy transfer (BRET) to transduce the level of free zinc as a ratio of emission intensities in the blue and orange portions of the spectrum. In addition to high sensitivity (below nanomolar levels) and selectivity, this approach allows both quantitative determination of "free" zinc ion (also termed "mobile" or "labile") using bioluminescence ratios and determination of the presence of the ion above a threshold simply by the change in color of bioluminescence, without an instrument. The carbonic anhydrase metal ion sensing platform offers well-established flexibility in sensitivity, selectivity, and response kinetics. Finally, bioluminescence labeling has proven an effective approach for molecular imaging in vivo since no exciting light is required; the expressible nature of this sensor offers the prospect of imaging zinc fluxes in vivo.
Collapse
|
27
|
Liu X, Pan L, Wang K, Pan W, Li N, Tang B. Imaging strategies for monitoring the immune response. Chem Sci 2022; 13:12957-12970. [PMID: 36425502 PMCID: PMC9667917 DOI: 10.1039/d2sc03446h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 10/05/2022] [Indexed: 08/11/2023] Open
Abstract
Real-time monitoring of the immune response can be used to evaluate the immune status of the body and to distinguish immune responders and non-responders, so as to better guide immunotherapy. Through direct labelling of immune cells and imaging specific biomarkers of different cells, the activation status of immune cells and immunosuppressive status of tumor cells can be visualized. The immunotherapeutic regimen can then be adjusted accordingly in a timely manner to improve the efficacy of immunotherapy. In this review, various imaging methods, immune-related imaging probes, current challenges and opportunities are summarized and discussed.
Collapse
Affiliation(s)
- Xiaohan Liu
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Molecular and Nano Science, Shandong Normal University Jinan 250014 P. R. China
| | - Limeng Pan
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Molecular and Nano Science, Shandong Normal University Jinan 250014 P. R. China
| | - Kaiye Wang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Molecular and Nano Science, Shandong Normal University Jinan 250014 P. R. China
| | - Wei Pan
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Molecular and Nano Science, Shandong Normal University Jinan 250014 P. R. China
| | - Na Li
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Molecular and Nano Science, Shandong Normal University Jinan 250014 P. R. China
| | - Bo Tang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Molecular and Nano Science, Shandong Normal University Jinan 250014 P. R. China
| |
Collapse
|
28
|
Staderini M, Vanni S, Baldeschi AC, Giachin G, Zattoni M, Celauro L, Ferracin C, Bistaffa E, Moda F, Pérez DI, Martínez A, Martín MA, Martín-Cámara O, Cores Á, Bianchini G, Kammerer R, Menéndez JC, Legname G, Bolognesi ML. Bifunctional carbazole derivatives for simultaneous therapy and fluorescence imaging in prion disease murine cell models. Eur J Med Chem 2022; 245:114923. [DOI: 10.1016/j.ejmech.2022.114923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 05/20/2022] [Accepted: 11/08/2022] [Indexed: 11/17/2022]
|
29
|
Nouizi F, Erkol H, Nikkhah D, Kwong TC, Gulsen G. Development of a preclinical CCD-based temperature modulated fluorescence tomography platform. BIOMEDICAL OPTICS EXPRESS 2022; 13:5740-5752. [PMID: 36733748 PMCID: PMC9872903 DOI: 10.1364/boe.470723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 09/25/2022] [Accepted: 09/26/2022] [Indexed: 05/11/2023]
Abstract
In preclinical research, fluorescence molecular tomography (FMT) is the most sensitive imaging modality to interrogate whole-body and provide 3D distribution of fluorescent contract agents. Despite its superior sensitivity, its mediocre spatial-resolution has been the main barrier to its clinical translation. This limitation is mainly due to the high scattering of optical photons in biological tissue together with the limited boundary measurements that lead to an undetermined and ill-posed inverse problem. To overcome the limitations of FMT, we previously introduced a novel method termed, Temperature Modulated Fluorescence Tomography (TMFT). TMFT utilizes thermos-sensitive fluorescent agents (ThermoDots) as a key component and localizes them with high-intensity focused ultrasound (HIFU). Scanning the focused HIFU beam having a diameter Ø = 1.3 mm across the tissue while monitoring the variation in the measured fluorescence signals reveals the position of the ThermoDots with high spatial accuracy. We have formerly built a prototype TMFT system that uses optical fibers for detection. In this paper, we present an upgraded version using a CCD camera-based detection that enables non-contact imaging. In this version, the animal under investigation is placed on an ultrasound transparent membrane, which eliminates the need for its immersion in optical matching fluids that were required by the fiber-based system. This CCD-based system will pave the way for convenient and wide-spread use of TMFT in preclinical research. Its performance validation on phantom studies demonstrates that high spatial-resolution (∼1.3 mm) and quantitative accuracy in recovered fluorophore concentration (<3% error) can be achieved.
Collapse
Affiliation(s)
- Farouk Nouizi
- Tu and Yuen Center for Functional Onco-Imaging, Department of Radiological Sciences, University of California Irvine, CA 92697, USA
- Chao Family Comprehensive Cancer Center, University of California Irvine, CA 92697, USA
| | - Hakan Erkol
- Department of Physics, Bogazici University, Bebek, 34342, Istanbul, Turkey
| | - Deniz Nikkhah
- Tu and Yuen Center for Functional Onco-Imaging, Department of Radiological Sciences, University of California Irvine, CA 92697, USA
| | - Tiffany C. Kwong
- Tu and Yuen Center for Functional Onco-Imaging, Department of Radiological Sciences, University of California Irvine, CA 92697, USA
| | - Gultekin Gulsen
- Tu and Yuen Center for Functional Onco-Imaging, Department of Radiological Sciences, University of California Irvine, CA 92697, USA
- Chao Family Comprehensive Cancer Center, University of California Irvine, CA 92697, USA
| |
Collapse
|
30
|
Zhang P, Ma C, Song F, Liu Z, Feng Y, Sun Y, He Y, Liu F, Wang D, Zhang G. Multi-branch attention prior based parameterized generative adversarial network for fast and accurate limited-projection reconstruction in fluorescence molecular tomography. BIOMEDICAL OPTICS EXPRESS 2022; 13:5327-5343. [PMID: 36425627 PMCID: PMC9664898 DOI: 10.1364/boe.469505] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 09/05/2022] [Accepted: 09/06/2022] [Indexed: 06/16/2023]
Abstract
Limited-projection fluorescence molecular tomography (FMT) allows rapid reconstruction of the three-dimensional (3D) distribution of fluorescent targets within a shorter data acquisition time. However, the limited-projection FMT is severely ill-posed and ill-conditioned due to insufficient fluorescence measurements and the strong scattering properties of photons in biological tissues. Previously, regularization-based methods, combined with the sparse distribution of fluorescent sources, have been commonly used to alleviate the severe ill-posed nature of the limited-projection FMT. Due to the complex iterative computations, time-consuming solution procedures, and less stable reconstruction results, the limited-projection FMT remains an intractable challenge for achieving fast and accurate reconstructions. In this work, we completely discard the previous iterative solving-based reconstruction themes and propose multi-branch attention prior based parameterized generative adversarial network (MAP-PGAN) to achieve fast and accurate limited-projection FMT reconstruction. Firstly, the multi-branch attention can provide parameterized weighted sparse prior information for fluorescent sources, enabling MAP-PGAN to effectively mitigate the ill-posedness and significantly improve the reconstruction accuracy of limited-projection FMT. Secondly, since the end-to-end direct reconstruction strategy is adopted, the complex iterative computation process in traditional regularization algorithms can be avoided, thus greatly accelerating the 3D visualization process. The numerical simulation results show that the proposed MAP-PGAN method outperforms the state-of-the-art methods in terms of localization accuracy and morphological recovery. Meanwhile, the reconstruction time is only about 0.18s, which is about 100 to 1000 times faster than the conventional iteration-based regularization algorithms. The reconstruction results from the physical phantoms and in vivo experiments further demonstrate the feasibility and practicality of the MAP-PGAN method in achieving fast and accurate limited-projection FMT reconstruction.
Collapse
Affiliation(s)
- Peng Zhang
- Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering,
Beihang University, Beijing, 100191, China
- These authors contributed equally to this work
| | - Chenbin Ma
- Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering,
Beihang University, Beijing, 100191, China
- Shenyuan Honors College, Beihang University, 100191, Beijing, China
- These authors contributed equally to this work
| | - Fan Song
- Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering,
Beihang University, Beijing, 100191, China
| | - Zeyu Liu
- Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering,
Beihang University, Beijing, 100191, China
| | - Youdan Feng
- Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering,
Beihang University, Beijing, 100191, China
| | - Yangyang Sun
- Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering,
Beihang University, Beijing, 100191, China
| | - Yufang He
- Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering,
Beihang University, Beijing, 100191, China
| | - Fei Liu
- Advanced Information & Industrial Technology Research Institute, Beijing Information Science & Technology University, Beijing, 100192, China
| | - Daifa Wang
- Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering,
Beihang University, Beijing, 100191, China
| | - Guanglei Zhang
- Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering,
Beihang University, Beijing, 100191, China
| |
Collapse
|
31
|
Sun R, Liu W, Kirk TV, Chen XD. A Dual-labeled Fluorescent Probe for Visualization of Dextranase Activity in A Simulated Food Digestion System. Food Chem 2022; 405:134744. [DOI: 10.1016/j.foodchem.2022.134744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 10/15/2022] [Accepted: 10/23/2022] [Indexed: 11/04/2022]
|
32
|
Fe3O4/Graphene-Based Nanotheranostics for Bimodal Magnetic Resonance/Fluorescence Imaging and Cancer Therapy. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-022-02457-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
|
33
|
Wanderi K, Cui Z. Organic fluorescent nanoprobes with NIR-IIb characteristics for deep learning. EXPLORATION (BEIJING, CHINA) 2022; 2:20210097. [PMID: 37323884 PMCID: PMC10191020 DOI: 10.1002/exp.20210097] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 01/06/2022] [Indexed: 06/15/2023]
Abstract
Illumination of biological events with near-infrared II sub-channel (NIR-IIb, 1500-1700 nm) enhances the transparency of biological tissues, which is very attractive for deep imaging. Due to the long-wavelength, which reduces optical damage, suppresses autofluorescence, and obviates light scattering, NIR-IIb nanoprobes afford deep tissue penetration with unprecedented spatiotemporal resolution. Hence, NIR-IIb imaging facilitates deep learning and decipherment of biological proceedings in living organisms with astounding high clarity. In comparison to its predecessors in the visible-near-infrared spectrum, imaging in the NIR-IIb has shown great potential for tissue imaging and extrapolating imaging applications for clinical studies. However, the use of organic fluorescent nanoprobes (OFNPs) in the NIR-IIb region is still rare since it is in its early stages. Thus, herein we aim to survey the recent development of different organic fluorescent nanomaterials with NIR-IIb characteristics, their unique photophysical properties, and their utilization in deep imaging in animal models. Further, practical researches on organic fluorescent nanoprobes with NIR-IIb emission and their transition to clinical applications are highlighted.
Collapse
Affiliation(s)
- Kevin Wanderi
- State Key Laboratory of VirologyWuhan Institute of VirologyCenter for Biosafety Mega‐ScienceChinese Academy of SciencesWuhanChina
- Department of Analytical Microbiology and NanobiologyUniversity of Chinese Academy of SciencesBeijingChina
| | - Zongqiang Cui
- State Key Laboratory of VirologyWuhan Institute of VirologyCenter for Biosafety Mega‐ScienceChinese Academy of SciencesWuhanChina
| |
Collapse
|
34
|
Nizam NI, Ochoa M, Smith JT, Gao S, Intes X. Monte Carlo-based data generation for efficient deep learning reconstruction of macroscopic diffuse optical tomography and topography applications. JOURNAL OF BIOMEDICAL OPTICS 2022; 27:083016. [PMID: 35484688 PMCID: PMC9048385 DOI: 10.1117/1.jbo.27.8.083016] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 04/12/2022] [Indexed: 06/14/2023]
Abstract
SIGNIFICANCE Deep learning (DL) models are being increasingly developed to map sensor data to the image domain directly. However, DL methodologies are data-driven and require large and diverse data sets to provide robust and accurate image formation performances. For research modalities such as 2D/3D diffuse optical imaging, the lack of large publicly available data sets and the wide variety of instrumentation designs, data types, and applications leads to unique challenges in obtaining well-controlled data sets for training and validation. Meanwhile, great efforts over the last four decades have focused on developing accurate and computationally efficient light propagation models that are flexible enough to simulate a wide variety of experimental conditions. AIM Recent developments in Monte Carlo (MC)-based modeling offer the unique advantage of simulating accurately light propagation spatially, temporally, and over an extensive range of optical parameters, including minimally to highly scattering tissue within a computationally efficient platform. Herein, we demonstrate how such MC platforms, namely "Monte Carlo eXtreme" and "Mesh-based Monte Carlo," can be leveraged to generate large and representative data sets for training the DL model efficiently. APPROACH We propose data generator pipeline strategies using these platforms and demonstrate their potential in fluorescence optical topography, fluorescence optical tomography, and single-pixel diffuse optical tomography. These applications represent a large variety in instrumentation design, sample properties, and contrast function. RESULTS DL models trained using the MC-based in silico datasets, validated further with experimental data not used during training, show accurate and promising results. CONCLUSION Overall, these MC-based data generation pipelines are expected to support the development of DL models for rapid, robust, and user-friendly image formation in a wide variety of applications.
Collapse
Affiliation(s)
- Navid Ibtehaj Nizam
- Rensselaer Polytechnic Institute, Department of Biomedical Engineering, Troy, New York, United States
| | - Marien Ochoa
- Rensselaer Polytechnic Institute, Department of Biomedical Engineering, Troy, New York, United States
| | - Jason T. Smith
- Rensselaer Polytechnic Institute, Department of Biomedical Engineering, Troy, New York, United States
| | - Shan Gao
- Rensselaer Polytechnic Institute, Department of Biomedical Engineering, Troy, New York, United States
| | - Xavier Intes
- Rensselaer Polytechnic Institute, Department of Biomedical Engineering, Troy, New York, United States
| |
Collapse
|
35
|
Chulpanova DS, Tazetdinova LG, Arkhipova SS, Mavlikeev MO, Mullagulova AI, Rizvanov AA, Solovyeva VV. In Vivo Visualization of Stable Neuroblastoma Cell Lines with Overexpression of Firefly Luciferase or Far-Red Fluorescent Protein. BIONANOSCIENCE 2022. [DOI: 10.1007/s12668-022-00967-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
36
|
Development of Stereo NIR-II Fluorescence Imaging System for 3D Tumor Vasculature in Small Animals. BIOSENSORS 2022; 12:bios12020085. [PMID: 35200345 PMCID: PMC8869613 DOI: 10.3390/bios12020085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 01/28/2022] [Accepted: 01/28/2022] [Indexed: 11/16/2022]
Abstract
Near-infrared-II (NIR-II, 1000–1700 nm) fluorescence imaging boasts high spatial resolution and deep tissue penetration due to low light scattering, reduced photon absorption, and low tissue autofluorescence. NIR-II biological imaging is applied mainly in the noninvasive visualization of blood vessels and tumors in deep tissue. In the study, a stereo NIR-II fluorescence imaging system was developed for acquiring three-dimension (3D) images on tumor vasculature in real-time, on top of the development of fluorescent semiconducting polymer dots (IR-TPE Pdots) with ultra-bright NIR-II fluorescence (1000–1400 nm) and high stability to perform long-term fluorescence imaging. The NIR-II imaging system only consists of one InGaAs camera and a moving stage to simulate left-eye view and right-eye view for the construction of 3D in-depth blood vessel images. The system was validated with blood vessel phantom of tumor-bearing mice and was applied successfully in obtaining 3D blood vessel images with 0.6 mm- and 5 mm-depth resolution and 0.15 mm spatial resolution. The NIR-II stereo vision provides precise 3D information on the tumor microenvironment and blood vessel path.
Collapse
|
37
|
Compressed sensing in fluorescence microscopy. PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 2022; 168:66-80. [PMID: 34153330 DOI: 10.1016/j.pbiomolbio.2021.06.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 05/29/2021] [Accepted: 06/07/2021] [Indexed: 12/30/2022]
Abstract
Compressed sensing (CS) is a signal processing approach that solves ill-posed inverse problems, from under-sampled data with respect to the Nyquist criterium. CS exploits sparsity constraints based on the knowledge of prior information, relative to the structure of the object in the spatial or other domains. It is commonly used in image and video compression as well as in scientific and medical applications, including computed tomography and magnetic resonance imaging. In the field of fluorescence microscopy, it has been demonstrated to be valuable for fast and high-resolution imaging, from single-molecule localization, super-resolution to light-sheet microscopy. Furthermore, CS has found remarkable applications in the field of mesoscopic imaging, facilitating the study of small animals' organs and entire organisms. This review article illustrates the working principles of CS, its implementations in optical imaging and discusses several relevant uses of CS in the field of fluorescence imaging from super-resolution microscopy to mesoscopy.
Collapse
|
38
|
Bonnet S, Elfatairi R, Franconi F, Roger E, Legeay S. Organic nanoparticle tracking during pharmacokinetic studies. Nanomedicine (Lond) 2021; 16:2539-2536. [PMID: 34814704 DOI: 10.2217/nnm-2021-0155] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
To understand how nanoparticles (NPs) interact with biological barriers and to ensure they maintain their integrity over time, it is crucial to study their in vivo pharmacokinetic (PK) profiles. Many methods of tracking have been used to describe the in vivo fate of NPs and to evaluate their PKs and structural integrity. However, they do not deliver the same level of information and this may cause misinterpretations. Here, the authors review and discuss the different methods for in vivo tracking of organic NPs. Among them, Förster resonance energy transfer (FRET) presents great potential to track NPs' integrity. However, FRET still requires validated methods to extract and quantify NPs in biological fluids and tissues.
Collapse
Affiliation(s)
- Samuel Bonnet
- Université d'Angers, PRISM, SFR ICAT, Plate-forme de recherche en imagerie et spectroscopie multi-modales, Angers F-49000, France
| | - Rana Elfatairi
- Université d'Angers, Inserm, CNRS, MINT, SFR ICAT, Angers F-49000, France
| | - Florence Franconi
- Université d'Angers, PRISM, SFR ICAT, Plate-forme de recherche en imagerie et spectroscopie multi-modales, Angers F-49000, France.,Université d'Angers, Inserm, CNRS, MINT, SFR ICAT, Angers F-49000, France
| | - Emilie Roger
- Université d'Angers, Inserm, CNRS, MINT, SFR ICAT, Angers F-49000, France
| | - Samuel Legeay
- Université d'Angers, Inserm, CNRS, MINT, SFR ICAT, Angers F-49000, France
| |
Collapse
|
39
|
Kirillin M, Khilov A, Kurakina D, Orlova A, Perekatova V, Shishkova V, Malygina A, Mironycheva A, Shlivko I, Gamayunov S, Turchin I, Sergeeva E. Dual-Wavelength Fluorescence Monitoring of Photodynamic Therapy: From Analytical Models to Clinical Studies. Cancers (Basel) 2021; 13:cancers13225807. [PMID: 34830963 PMCID: PMC8616416 DOI: 10.3390/cancers13225807] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/03/2021] [Accepted: 11/09/2021] [Indexed: 11/16/2022] Open
Abstract
Simple Summary Fluorescence imaging is an efficient tool in monitoring photodynamic therapy procedures allowing us to track accumulation and photobleaching of a photosensitizer (PS). Chlorin-based PSs feature high absorption in the red and blue bands of visible spectrum. Due to spectral dispersion of light penetration depth in biotissues, fluorescence signals registered upon excitation by red or blue light are formed in different measurement volumes. We present analytical and numerical models of dual-wavelength fluorescence imaging for evaluation of PS localization depth in the cases of topical administration and intravenous injection. The results of analytical and numerical simulations are in good agreement with the phantom experiments, and are translated to the in vivo imaging, which allows to interpret experimental observations in animal trials, human volunteers, and clinical studies. The proposed approach allows us to noninvasively estimate typical accumulation depths of PS localization which are consistent with the morphologically expected values. Abstract Fluorescence imaging modalities are currently a routine tool for the assessment of marker distribution within biological tissues, including monitoring of fluorescent photosensitizers (PSs) in photodynamic therapy (PDT). Conventional fluorescence imaging techniques provide en-face two-dimensional images, while depth-resolved techniques require complicated tomographic modalities. In this paper, we report on a cost-effective approach for the estimation of fluorophore localization depth based on dual-wavelength probing. Owing to significant difference in optical properties of superficial biotissues for red and blue ranges of optical spectra, simultaneous detection of fluorescence excited at different wavelengths provides complementary information from different measurement volumes. Here, we report analytical and numerical models of the dual-wavelength fluorescence imaging of PS-containing biotissues considering topical and intravenous PS administration, and demonstrate the feasibility of this approach for evaluation of the PS localization depth based on the fluorescence signal ratio. The results of analytical and numerical simulations, as well as phantom experiments, were translated to the in vivo imaging to interpret experimental observations in animal experiments, human volunteers, and clinical studies. The proposed approach allowed us to estimate typical accumulation depths of PS localization which are consistent with the morphologically expected values for both topical PS administration and intravenous injection.
Collapse
Affiliation(s)
- Mikhail Kirillin
- Institute of Applied Physics RAS, 46 Ulyanov St., 603950 Nizhny Novgorod, Russia
| | - Aleksandr Khilov
- Institute of Applied Physics RAS, 46 Ulyanov St., 603950 Nizhny Novgorod, Russia
| | - Daria Kurakina
- Institute of Applied Physics RAS, 46 Ulyanov St., 603950 Nizhny Novgorod, Russia
| | - Anna Orlova
- Institute of Applied Physics RAS, 46 Ulyanov St., 603950 Nizhny Novgorod, Russia
| | - Valeriya Perekatova
- Institute of Applied Physics RAS, 46 Ulyanov St., 603950 Nizhny Novgorod, Russia
| | - Veronika Shishkova
- Institute of Applied Physics RAS, 46 Ulyanov St., 603950 Nizhny Novgorod, Russia
- Institute of Information Technology, Mathematics and Mechanics, Lobachevsky State University of Nizhny Novgorod, 23 Gagarin Avenue, 603022 Nizhny Novgorod, Russia
| | - Alfia Malygina
- Center for Skin Tumor Diagnostics and Treatment, Privolzhsky Research Medical University, 10/1 Minin and Pozharsky Sq., 603005 Nizhny Novgorod, Russia
| | - Anna Mironycheva
- Institute of Applied Physics RAS, 46 Ulyanov St., 603950 Nizhny Novgorod, Russia
- Center for Skin Tumor Diagnostics and Treatment, Privolzhsky Research Medical University, 10/1 Minin and Pozharsky Sq., 603005 Nizhny Novgorod, Russia
| | - Irena Shlivko
- Center for Skin Tumor Diagnostics and Treatment, Privolzhsky Research Medical University, 10/1 Minin and Pozharsky Sq., 603005 Nizhny Novgorod, Russia
| | - Sergey Gamayunov
- Institute of Applied Physics RAS, 46 Ulyanov St., 603950 Nizhny Novgorod, Russia
- Nizhny Novgorod Regional Oncological Hospital, Delovaya 11/1, 603126 Nizhny Novgorod, Russia
| | - Ilya Turchin
- Institute of Applied Physics RAS, 46 Ulyanov St., 603950 Nizhny Novgorod, Russia
| | - Ekaterina Sergeeva
- Institute of Applied Physics RAS, 46 Ulyanov St., 603950 Nizhny Novgorod, Russia
| |
Collapse
|
40
|
Abstract
Optical imaging is an indispensable tool in clinical diagnostics and fundamental biomedical research. Autofluorescence-free optical imaging, which eliminates real-time optical excitation to minimize background noise, enables clear visualization of biological architecture and physiopathological events deep within living subjects. Molecular probes especially developed for autofluorescence-free optical imaging have been proven to remarkably improve the imaging sensitivity, penetration depth, target specificity, and multiplexing capability. In this Review, we focus on the advancements of autofluorescence-free molecular probes through the lens of particular molecular or photophysical mechanisms that produce long-lasting luminescence after the cessation of light excitation. The versatile design strategies of these molecular probes are discussed along with a broad range of biological applications. Finally, challenges and perspectives are discussed to further advance the next-generation autofluorescence-free molecular probes for in vivo imaging and in vitro biosensors.
Collapse
Affiliation(s)
- Yuyan Jiang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457, Singapore
| | - Kanyi Pu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457, Singapore.,School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| |
Collapse
|
41
|
Zhang P, Fan G, Xing T, Song F, Zhang G. UHR-DeepFMT: Ultra-High Spatial Resolution Reconstruction of Fluorescence Molecular Tomography Based on 3-D Fusion Dual-Sampling Deep Neural Network. IEEE TRANSACTIONS ON MEDICAL IMAGING 2021; 40:3217-3228. [PMID: 33826514 DOI: 10.1109/tmi.2021.3071556] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Fluorescence molecular tomography (FMT) is a promising and high sensitivity imaging modality that can reconstruct the three-dimensional (3D) distribution of interior fluorescent sources. However, the spatial resolution of FMT has encountered an insurmountable bottleneck and cannot be substantially improved, due to the simplified forward model and the severely ill-posed inverse problem. In this work, a 3D fusion dual-sampling convolutional neural network, namely UHR-DeepFMT, was proposed to achieve ultra-high spatial resolution reconstruction of FMT. Under this framework, the UHR-DeepFMT does not need to explicitly solve the FMT forward and inverse problems. Instead, it directly establishes an end-to-end mapping model to reconstruct the fluorescent sources, which can enormously eliminate the modeling errors. Besides, a novel fusion mechanism that integrates the dual-sampling strategy and the squeeze-and-excitation (SE) module is introduced into the skip connection of UHR-DeepFMT, which can significantly improve the spatial resolution by greatly alleviating the ill-posedness of the inverse problem. To evaluate the performance of UHR-DeepFMT network model, numerical simulations, physical phantom and in vivo experiments were conducted. The results demonstrated that the proposed UHR-DeepFMT can outperform the cutting-edge methods and achieve ultra-high spatial resolution reconstruction of FMT with the powerful ability to distinguish adjacent targets with a minimal edge-to-edge distance (EED) of 0.5 mm. It is assumed that this research is a significant improvement for FMT in terms of spatial resolution and overall imaging quality, which could promote the precise diagnosis and preclinical application of small animals in the future.
Collapse
|
42
|
Xie N, Hou Y, Wang S, Ai X, Bai J, Lai X, Zhang Y, Meng X, Wang X. Second near-infrared (NIR-II) imaging: a novel diagnostic technique for brain diseases. Rev Neurosci 2021; 33:467-490. [PMID: 34551223 DOI: 10.1515/revneuro-2021-0088] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 09/02/2021] [Indexed: 12/20/2022]
Abstract
Imaging in the second near-infrared II (NIR-II) window, a kind of biomedical imaging technology with characteristics of high sensitivity, high resolution, and real-time imaging, is commonly used in the diagnosis of brain diseases. Compared with the conventional visible light (400-750 nm) and NIR-I (750-900 nm) imaging, the NIR-II has a longer wavelength of 1000-1700 nm. Notably, the superiorities of NIR-II can minimize the light scattering and autofluorescence of biological tissue with the depth of brain tissue penetration up to 7.4 mm. Herein, we summarized the main principles of NIR-II in animal models of traumatic brain injury, cerebrovascular visualization, brain tumor, inflammation, and stroke. Simultaneously, we encapsulated the in vivo process of NIR-II probes and their in vivo and in vitro toxic effects. We further dissected its limitations and following optimization measures.
Collapse
Affiliation(s)
- Na Xie
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu611137, China
| | - Ya Hou
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu611137, China
| | - Shaohui Wang
- Ethnic Medicine Academic Heritage Innovation Research Center, Chengdu University of Traditional Chinese Medicine, Chengdu611137, China
| | - Xiaopeng Ai
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu611137, China
| | - Jinrong Bai
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu611137, China
| | - Xianrong Lai
- Ethnic Medicine Academic Heritage Innovation Research Center, Chengdu University of Traditional Chinese Medicine, Chengdu611137, China
| | - Yi Zhang
- Ethnic Medicine Academic Heritage Innovation Research Center, Chengdu University of Traditional Chinese Medicine, Chengdu611137, China
| | - Xianli Meng
- State Key Laboratory of Southwestern Chinese Medicine Resources, Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu611137, China
| | - Xiaobo Wang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu611137, China
| |
Collapse
|
43
|
Zhou J, Zhang S, Liu Y. Electrochemiluminescence Single‐cell Analysis on Nanostructured Interface. ELECTROANAL 2021. [DOI: 10.1002/elan.202100341] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Juanhua Zhou
- Department of Chemistry Beijing Key Laboratory for Analytical Methods and Instrumentation Kay Lab of Bioorganic Phosphorus Chemistry and Chemical Biology of Ministry of Education Tsinghua University Beijing 100084 China
| | - Shiyu Zhang
- Department of Chemistry Beijing Key Laboratory for Analytical Methods and Instrumentation Kay Lab of Bioorganic Phosphorus Chemistry and Chemical Biology of Ministry of Education Tsinghua University Beijing 100084 China
| | - Yang Liu
- Department of Chemistry Beijing Key Laboratory for Analytical Methods and Instrumentation Kay Lab of Bioorganic Phosphorus Chemistry and Chemical Biology of Ministry of Education Tsinghua University Beijing 100084 China
| |
Collapse
|
44
|
Aljabali AAA, Al Zoubi MS, Al-Batayneh KM, Pardhi DM, Dua K, Pal K, Tambuwala MM. Innovative Applications of Plant Viruses in Drug Targeting and Molecular Imaging- A Review. Curr Med Imaging 2021; 17:491-506. [PMID: 33030133 DOI: 10.2174/1573405616666201007160243] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 07/13/2020] [Accepted: 08/06/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Nature had already engineered various types of nanoparticles (NPs), especially viruses, which can deliver their cargo to the host/targeted cells. The ability to selectively target specific cells offers a significant advantage over the conventional approach. Numerous organic NPs, including native protein cages, virus-like particles, polymeric saccharides, and liposomes, have been used for the preparation of nanoparticles. Such nanomaterials have demonstrated better performance as well as improved biocompatibility, devoid of side effects, and stable without any deterioration. OBJECTIVE This review discusses current clinical and scientific research on naturally occurring nanomaterials. It also illustrates and updates the tailor-made approaches for selective delivery and targeted medications that require a high-affinity interconnection to the targeted cells. METHODS A comprehensive search was performed using keywords for viral nanoparticles, viral particles for drug delivery, viral nanoparticles for molecular imaging, theranostics applications of viral nanoparticles and plant viruses in nanomedicine. We searched on Google Scholar, PubMed, Springer, Medline, and Elsevier from 2000 till date and by the bibliographic review of all identified articles. RESULTS The findings demonstrated that structures dependent on nanomaterials might have potential applications in diagnostics, cell marking, comparing agents (computed tomography and magnetic resonance imaging), and antimicrobial drugs, as well as drug delivery structures. However, measures should be taken in order to prevent or mitigate, in pharmaceutical or medical applications, the toxic impact or incompatibility of nanoparticle-based structures with biological systems. CONCLUSION The review provided an overview of the latest advances in nanotechnology, outlining the difficulties and the advantages of in vivo and in vitro structures that are focused on a specific subset of the natural nanomaterials.
Collapse
Affiliation(s)
- Alaa A A Aljabali
- Department of Pharmaceutics and Pharmaceutical Technology, Yarmouk University - Faculty of Pharmacy, Irbid, Jordan
| | - Mazhar S Al Zoubi
- Department of Basic Medical Sciences, Yarmouk University - Faculty of Medicine, Irbid, Jordan
| | - Khalid M Al-Batayneh
- Department of Biological Sciences, Yarmouk University - Faculty of Science, Irbid, Jordan
| | - Dinesh M Pardhi
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, FL-70211, Kuopio, Finland
| | - Kamal Dua
- Discipline of Pharmacy, Graduate School of Health, University of Technology, Sydney, Australia
| | - Kaushik Pal
- Federal University of Rio de Janeiro, Cidade Universitaria, Rio de Janeiro-RJ, 21941-901, Brazil
| | - Murtaza M Tambuwala
- School of Pharmacy and Pharmaceutical Science, Ulster University, Coleraine, County Londonderry, BT52 1SA, Northern Ireland, United Kingdom
| |
Collapse
|
45
|
Song B, Wen X, Zhang X, Liu Q, Ma H, Tan M, Yuan J. Bioconjugates of versatile β-diketonate-lanthanide complexes as probes for time-gated luminescence and magnetic resonance imaging of cancer cells in vitro and in vivo. J Mater Chem B 2021; 9:3161-3167. [PMID: 33885620 DOI: 10.1039/d1tb00144b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Magnetic resonance imaging (MRI) and optical imaging (OI) are attractive for constructing bimodal probes due to their complementary imaging characteristics. The combination of these two techniques could be a useful tool to simultaneously obtain both anatomical and molecular information as well as to significantly improve the accuracy of detection. In this study, we found that β-diketonate-lanthanide complexes, BHHBCB-Ln3+, could covalently bind to proteins to exhibit long-lived and intense luminescence (Ln3+ = Eu3+, τ = 0.52 ms, Φ = 0.40) and remarkably high relaxivity (Ln3+ = Gd3+, r1 = 35.67 mM-1 s-1, r2 = 43.25 mM-1 s-1) with excellent water solubility, stability and biocompatibility. Hence, we conjugated BHHBCB-Ln3+ with a tumor-targetable biomacromolecule, transferrin (Tf), to construct the probes, Tf-BHHBCB-Ln3+, for time-gated luminescence (TGL, Ln3+ = Eu3+) and MR (Ln3+ = Gd3+) imaging of cancerous cells in vitro and in vivo. As expected, the as-prepared probes showed high specificity to bind with the transferrin receptor-overexpressed cancerous cells, to enable the probe molecules to be accumulated in these cells. Using Tf-BHHBCB-Ln3+ as probes, the cultured cancerous cells and the tumors in tumor-bearing mice have been clearly visualized by background-free TGL and in vivo MR imaging. The research outcomes suggested the potential of β-diketonate-lanthanide complexes for use in constructing bimodal TGL/MR imaging bioprobes.
Collapse
Affiliation(s)
- Bo Song
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, P. R. China.
| | | | | | | | | | | | | |
Collapse
|
46
|
Wang W, Feng Z, Li B, Chang Y, Li X, Yan X, Chen R, Yu X, Zhao H, Lu G, Kong X, Qian J, Liu X. Er 3+ self-sensitized nanoprobes with enhanced 1525 nm downshifting emission for NIR-IIb in vivo bio-imaging. J Mater Chem B 2021; 9:2899-2908. [PMID: 33725037 DOI: 10.1039/d0tb02728f] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Traditional sensitizer (Yb3+ or Nd3+) and activator (Er3+) co-doped lanthanide-based nanoprobes possessing emission of Er3+ at 1525 nm have attracted much attention in NIR-IIb bio-imaging. However, the 1525 nm fluorescence efficiency was not high enough in such co-doped systems due to the serious back energy transfer from the activator to the sensitizer, resulting in a lot of excitation energy loss. Herein, we have designed an efficient NIR-IIb nanoprobe Er3+ self-sensitized NaErF4:0.5%Tm3+@NaLuF4, where substantially all the excitation energy could contribute to Er3+ ions and most energy transfer processes were confined among Er3+ ions, avoiding the energy dissipation by heterogeneous sensitizer ions. The influence of the types of epitaxial heterogeneous shells, the doping effect and optimal doping concentration of Tm3+ ions, as well as the critical shell thickness for obtaining the surface quenching-assisted downshifting emission are systematically investigated to acquire the most efficient 1525 nm luminescence under 800 nm excitation. The quantum yield in the 1500-1700 nm region reached 13.92%, enabling high-resolution through-skull cerebrovascular microscopy imaging and large-depth in vivo physiological dynamic imaging with an extremely low excitation powder density of 35 mW cm-2. The designed nanoprobe can be potentially used for brain science research and clinical diagnosis.
Collapse
Affiliation(s)
- Wang Wang
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, FineMechanics and Physics, Chinese Academy of Science, Changchun 130033, China.
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
47
|
Zhang Z, Wang R, Luo R, Zhu J, Huang X, Liu W, Liu F, Feng F, Qu W. An Activatable Theranostic Nanoprobe for Dual-Modal Imaging-Guided Photodynamic Therapy with Self-Reporting of Sensitizer Activation and Therapeutic Effect. ACS NANO 2021; 15:5366-5383. [PMID: 33705106 DOI: 10.1021/acsnano.0c10916] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Intelligent systems that offer traceable cancer therapy are highly desirable for precision medicine. Although photodynamic therapy (PDT) has been approved in the clinic for decades, determining where the tumor is, when to irradiate, and how long to expose to light still confuse the clinicians. Patients are always suffering from the phototoxicity of the photosensitizer in nonmalignant tissues. Herein, an activatable theranostic agent, ZnPc@TPCB nanoparticles (NPs), is prepared by doping a photosensitizer, ZnPc, with an aggregation-induced emission probe, TPCB. The assembled or disassembled ZnPc@TPCB NPs in various phases have behaved differently in fluorescence intensity, photoacoustic (PA) signals, and PDT efficiency. The intact nanoparticles are non-emissive in aqueous media while showing strong PA signals and low PDT efficiency, which can eliminate the phototoxicity and self-monitor their distribution and image the tumors' location. Disassembling of the NPs leads to the release of ZnPc and its red fluorescence turn-on to self-report the photosensitizer's activation. Upon light irradiation, the reactive oxygen species (ROS) generated by ZnPc can induce cell apoptosis and activate the ROS sensor, TPCB, which will yield intense orange-red fluorescence and instantly predict the therapeutic effect. Moreover, enhanced PDT efficacy is achieved via the GSH-depleting adjuvant quinone methide produced by the activated TPCB. The well-designed ZnPc@TPCB NPs have shown promising potential for finely controlled PDT with good biosafety and broad application prospects in individual therapy, which may inspire the development of precision medicine.
Collapse
Affiliation(s)
- Zhongtao Zhang
- Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing 211198, China
| | - Ruyi Wang
- Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing 211198, China
| | - Renjie Luo
- Department of Pharmaceutical Analysis, China Pharmaceutical University, Nanjing 211198, China
| | - Jiaxin Zhu
- Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing 211198, China
| | - Xiaoxian Huang
- Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing 211198, China
| | - Wenyuan Liu
- Department of Pharmaceutical Analysis, China Pharmaceutical University, Nanjing 211198, China
- Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, China Pharmaceutical University, Nanjing 211198, China
| | - Fulei Liu
- The Joint Laboratory of China Pharmaceutical University and Taian City Central Hospital, Taian City Central Hospital, Taian 271000, China
- Pharmaceutical Department, Taian City Central Hospital, Taian 271000, China
| | - Feng Feng
- Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing 211198, China
- Jiangsu Food and Pharmaceutical Science College, Huaian 223003, China
| | - Wei Qu
- Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing 211198, China
- Key Laboratory of Biomedical Functional Materials, China Pharmaceutical University, Nanjing 211198, China
| |
Collapse
|
48
|
Thapa P, Upadhyay SP, Suo WZ, Singh V, Gurung P, Lee ES, Sharma R, Sharma M. Chalcone and its analogs: Therapeutic and diagnostic applications in Alzheimer's disease. Bioorg Chem 2021; 108:104681. [PMID: 33571811 PMCID: PMC7928223 DOI: 10.1016/j.bioorg.2021.104681] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 12/15/2020] [Accepted: 01/20/2021] [Indexed: 02/08/2023]
Abstract
Chalcone [(E)-1,3-diphenyl-2-propene-1-one], a small molecule with α, β unsaturated carbonyl group is a precursor or component of many natural flavonoids and isoflavonoids. It is one of the privileged structures in medicinal chemistry. It possesses a wide range of biological activities encouraging many medicinal chemists to study this scaffold for its usefulness to oncology, infectious diseases, virology and neurodegenerative diseases including Alzheimer's disease (AD). Small molecular size, convenient and cost-effective synthesis, and flexibility for modifications to modulate lipophilicity suitable for blood brain barrier (BBB) permeability make chalcones a preferred candidate for their therapeutic and diagnostic potential in AD. This review summarizes and highlights the importance of chalcone and its analogs as single target small therapeutic agents, multi-target directed ligands (MTDLs) as well as molecular imaging agents for AD. The information summarized here will guide many medicinal chemist and researchers involved in drug discovery to consider chalcone as a potential scaffold for the development of anti-AD agents including theranostics.
Collapse
Affiliation(s)
- Pritam Thapa
- Drug Discovery Program, Midwest Veterans' Biomedical Research Foundation, KCVA Medical Center, Kansas City, MO 64128, USA.
| | - Sunil P Upadhyay
- Drug Discovery Program, Midwest Veterans' Biomedical Research Foundation, KCVA Medical Center, Kansas City, MO 64128, USA
| | - William Z Suo
- Laboratory for Alzheimer's Disease & Aging Research, Veterans Affairs Medical Center, Kansas City, MO 64128, USA
| | - Vikas Singh
- Division of Neurology, KCVA Medical Center, Kansas City, MO, USA
| | - Prajwal Gurung
- Inflammation Program, University of Iowa, Iowa City, IA 52242, USA
| | - Eung Seok Lee
- College of Pharmacy, Yeungnam University, Gyeongsan 712-749, Republic of Korea
| | - Ram Sharma
- Drug Discovery Program, Midwest Veterans' Biomedical Research Foundation, KCVA Medical Center, Kansas City, MO 64128, USA
| | - Mukut Sharma
- Drug Discovery Program, Midwest Veterans' Biomedical Research Foundation, KCVA Medical Center, Kansas City, MO 64128, USA
| |
Collapse
|
49
|
Kiraga Ł, Kucharzewska P, Strzemecki D, Rygiel TP, Król M. Non-radioactive imaging strategies for in vivo immune cell tracking. PHYSICAL SCIENCES REVIEWS 2021; 8:385-403. [PMID: 36975764 PMCID: PMC10037928 DOI: 10.1515/psr-2020-0205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
In vivo tracking of administered cells chosen for specific disease treatment may be conducted by diagnostic imaging techniques preceded by cell labeling with special contrast agents. The most commonly used agents are those with radioactive properties, however their use in research is often impossible. This review paper focuses on the essential aspect of cell tracking with the exclusion of radioisotope tracers, therefore we compare application of different types of non-radioactive contrast agents (cell tracers), methods of cell labeling and application of various techniques for cell tracking, which are commonly used in preclinical or clinical studies. We discuss diagnostic imaging methods belonging to three groups: (1) Contrast-enhanced X-ray imaging, (2) Magnetic resonance imaging, and (3) Optical imaging. In addition, we present some interesting data from our own research on tracking immune cell with the use of discussed methods. Finally, we introduce an algorithm which may be useful for researchers planning leukocyte targeting studies, which may help to choose the appropriate cell type, contrast agent and diagnostic technique for particular disease study.
Collapse
Affiliation(s)
- Łukasz Kiraga
- Department of Cancer Biology, Institute of Biology, Warsaw University of Life Sciences, 02-787 Warsaw, Poland
- Cellis AG, 80002 Zurich, Switzerland
| | - Paulina Kucharzewska
- Department of Cancer Biology, Institute of Biology, Warsaw University of Life Sciences, 02-787 Warsaw, Poland
- Cellis AG, 80002 Zurich, Switzerland
| | | | - Tomasz P. Rygiel
- Cellis AG, 80002 Zurich, Switzerland
- Department of Immunology, Medical University of Warsaw, 02-097 Warsaw, Poland
| | - Magdalena Król
- Department of Cancer Biology, Institute of Biology, Warsaw University of Life Sciences, 02-787 Warsaw, Poland
- Cellis AG, 80002 Zurich, Switzerland
| |
Collapse
|
50
|
Energy Transfer Systems for In Vivo Tracking. Methods Mol Biol 2021. [PMID: 32112378 DOI: 10.1007/978-1-0716-0364-2_5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
With recent advances, fluorescent imaging has gained momentum as an important tool for in vivo imaging. FRET systems consist of molecules that absorb in the near-infrared region which are efficient candidates for in vivo imaging, basic research, and clinical applications. Nontoxic, photostable fluorophores, such as fluorescent proteins and dyes, can successfully be used to visualize spatial and temporal dynamics of living cells. Selected cells to be injected are first tagged with the FRET-based biosensor and then injected to the living animal. Then, these foreign cells in the host body can be visualized under fluorescence microscope via excitation of the fluorophores at the correct wavelength.
Collapse
|