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Lumata JL, Hagge LM, Gaspar MA, Trashi I, Ehrman RN, Koirala S, Chiev AC, Wijesundara YH, Darwin CB, Pena S, Wen X, Wansapura J, Nielsen SO, Kovacs Z, Lumata LL, Gassensmith JJ. TEMPO-conjugated tobacco mosaic virus as a magnetic resonance imaging contrast agent for detection of superoxide production in the inflamed liver. J Mater Chem B 2024; 12:3273-3281. [PMID: 38469725 DOI: 10.1039/d3tb02765a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2024]
Abstract
Superoxide, an anionic dioxygen molecule, plays a crucial role in redox regulation within the body but is implicated in various pathological conditions when produced excessively. Efforts to develop superoxide detection strategies have led to the exploration of organic-based contrast agents for magnetic resonance imaging (MRI). This study compares the effectiveness of two such agents, nTMV-TEMPO and kTMV-TEMPO, for detecting superoxide in a mouse liver model with lipopolysaccharide (LPS)-induced inflammation. The study demonstrates that kTMV-TEMPO, with a strategically positioned lysine residue for TEMPO attachment, outperforms nTMV-TEMPO as an MRI contrast agent. The enhanced sensitivity of kTMV-TEMPO is attributed to its more exposed TEMPO attachment site, facilitating stronger interactions with water protons and superoxide radicals. EPR kinetics experiments confirm kTMV-TEMPO's faster oxidation and reduction rates, making it a promising sensor for superoxide in inflamed liver tissue. In vivo experiments using healthy and LPS-induced inflamed mice reveal that reduced kTMV-TEMPO remains MRI-inactive in healthy mice but becomes MRI-active in inflamed livers. The contrast enhancement in inflamed livers is substantial, validating the potential of kTMV-TEMPO for detecting superoxide in vivo. This research underscores the importance of optimizing contrast agents for in vivo imaging applications. The enhanced sensitivity and biocompatibility of kTMV-TEMPO make it a promising candidate for further studies in the realm of medical imaging, particularly in the context of monitoring oxidative stress-related diseases.
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Affiliation(s)
- Jenica L Lumata
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, USA.
| | - Laurel M Hagge
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, USA.
- Advanced Imaging Research Center, The University of Texas Southwestern Medical Center, USA
| | - Miguel A Gaspar
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, USA.
| | - Ikeda Trashi
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, USA.
| | - Ryanne N Ehrman
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, USA.
| | - Shailendra Koirala
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, USA.
| | - Alyssa C Chiev
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, USA.
| | - Yalini H Wijesundara
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, USA.
| | - Cary B Darwin
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, USA.
| | - Salvador Pena
- Advanced Imaging Research Center, The University of Texas Southwestern Medical Center, USA
| | - Xiaodong Wen
- Advanced Imaging Research Center, The University of Texas Southwestern Medical Center, USA
| | - Janaka Wansapura
- Advanced Imaging Research Center, The University of Texas Southwestern Medical Center, USA
| | - Steven O Nielsen
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, USA.
| | - Zoltan Kovacs
- Advanced Imaging Research Center, The University of Texas Southwestern Medical Center, USA
| | - Lloyd L Lumata
- Advanced Imaging Research Center, The University of Texas Southwestern Medical Center, USA
- Department of Physics, The University of Texas at Dallas, USA
| | - Jeremiah J Gassensmith
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, USA.
- Advanced Imaging Research Center, The University of Texas Southwestern Medical Center, USA
- Department of Bioengineering, The University of Texas at Dallas, USA
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2
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Liu G, Li X, Liu X, Lu W, Xue Y, Liu M. Cyclodextrin-conjugated low-molecular-weight polyethyleneimine as a macromolecular contrast agent for tumor-targeted magnetic resonance imaging. RSC Adv 2024; 14:10499-10506. [PMID: 38567319 PMCID: PMC10985534 DOI: 10.1039/d4ra00316k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Accepted: 03/20/2024] [Indexed: 04/04/2024] Open
Abstract
Macromolecular contrast agents (CAs) usually possess excellent contrast ability and tumor-targeting ability in comparison with small-molecule CAs, especially for early tumor detection. Herein, cyclodextrin-conjugated low-molecular-weight polyethyleneimine was synthesized as a macromolecular backbone. Afterward, a linear polymer with adamantane terminal and Gd chelates was synthesized, followed by conjugating with the backbone via host-guest interaction. Finally, folic acid was conjugated onto the as-prepared CAs through bioorthogonal chemistry, which endowed the CAs with the capability to accumulate into the tumor region. Compared to Magnevist (r1 = 4.25 mM-1 s-1) used in clinic, the PC/Ad-PEG2000-PLL(DTPA-Gd)-FA exhibited higher longitudinal relaxivity (r1 = 11.62 mM-1 s-1) with excellent biocompatibility. Furthermore, in vivo experiments demonstrated that PC/Ad-PEG2000-PLL(DTPA-Gd)-FA could effectively accumulate in the tumor region and produce a brighter image than that of Magnevist. The H&E staining and metabolic data further illustrated that this CA possessed excellent biocompatibility in vivo. Finally, these results above suggest that this macromolecular CA could be a potential candidate as a MRI CA for tumor-targeted diagnosis.
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Affiliation(s)
- Guangkuo Liu
- Hubei Key Laboratory for Novel Reactor and Green Chemistry Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology Wuhan 430205 China
- School of Optoelectronic Materials & Technology, Institute for Interdisciplinary Research, Jianghan University Wuhan 430056 China
| | - Xinxin Li
- Hubei Key Laboratory for Novel Reactor and Green Chemistry Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology Wuhan 430205 China
- School of Optoelectronic Materials & Technology, Institute for Interdisciplinary Research, Jianghan University Wuhan 430056 China
| | - Xiaojie Liu
- School of Optoelectronic Materials & Technology, Institute for Interdisciplinary Research, Jianghan University Wuhan 430056 China
| | - Wangting Lu
- State Key Laboratory of Precision Blasting, Jianghan University Wuhan 430056 China
- School of Optoelectronic Materials & Technology, Institute for Interdisciplinary Research, Jianghan University Wuhan 430056 China
| | - Yanan Xue
- Hubei Key Laboratory for Novel Reactor and Green Chemistry Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology Wuhan 430205 China
| | - Min Liu
- State Key Laboratory of Precision Blasting, Jianghan University Wuhan 430056 China
- School of Optoelectronic Materials & Technology, Institute for Interdisciplinary Research, Jianghan University Wuhan 430056 China
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3
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Di Gregorio E, Papi C, Conti L, Di Lorenzo A, Cavallari E, Salvatore M, Cavaliere C, Ferrauto G, Aime S. A Magnetic Resonance Imaging-Chemical Exchange Saturation Transfer (MRI-CEST) Method for the Detection of Water Cycling across Cellular Membranes. Angew Chem Int Ed Engl 2024; 63:e202313485. [PMID: 37905585 DOI: 10.1002/anie.202313485] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 10/30/2023] [Accepted: 10/31/2023] [Indexed: 11/02/2023]
Abstract
Water cycling across the membrane transporters is considered a hallmark of cellular metabolism and it could be of high diagnostic relevance in the characterization of tumors and other diseases. The method relies on the response of intracellular proton exchanging molecules to the presence of extracellular Gd-based contrast agents (GBCAs). Paramagnetic GBCAs enhances the relaxation rate of water molecules in the extracellular compartment and, through membrane exchange, the relaxation enhancement is transferred to intracellular molecules. The effect is detected at the MRI-CEST (Magnetic Resonance Imaging - Chemical Exchange Saturation Transfer) signal of intracellular proton exchanging molecules. The magnitude of the change in the CEST response reports on water cycling across the membrane. The method has been tested on Red Blood Cells and on orthotopic murine models of breast cancer with different degree of malignancy (4T1, TS/A and 168FARN). The distribution of voxels reporting on membrane permeability fits well with the cells' aggressiveness and acts as an early reporter to monitor therapeutic treatments.
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Affiliation(s)
- Enza Di Gregorio
- Department of Molecular Biotechnologies and Health Sciences, University of Torino, Via Nizza 52, 10126, Torino, Italy
| | - Chiara Papi
- Department of Molecular Biotechnologies and Health Sciences, University of Torino, Via Nizza 52, 10126, Torino, Italy
| | - Laura Conti
- Department of Molecular Biotechnologies and Health Sciences, University of Torino, Via Nizza 52, 10126, Torino, Italy
| | - Antonino Di Lorenzo
- Department of Molecular Biotechnologies and Health Sciences, University of Torino, Via Nizza 52, 10126, Torino, Italy
| | - Eleonora Cavallari
- Department of Molecular Biotechnologies and Health Sciences, University of Torino, Via Nizza 52, 10126, Torino, Italy
| | - Marco Salvatore
- IRCCS SDN SynLab, Via E. Gianturco 113, 80143, Napoli, Italy
| | - Carlo Cavaliere
- IRCCS SDN SynLab, Via E. Gianturco 113, 80143, Napoli, Italy
| | - Giuseppe Ferrauto
- Department of Molecular Biotechnologies and Health Sciences, University of Torino, Via Nizza 52, 10126, Torino, Italy
| | - Silvio Aime
- IRCCS SDN SynLab, Via E. Gianturco 113, 80143, Napoli, Italy
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4
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Li D, Kirberger M, Qiao J, Gui Z, Xue S, Pu F, Jiang J, Xu Y, Tan S, Salarian M, Ibhagui O, Hekmatyar K, Yang JJ. Protein MRI Contrast Agents as an Effective Approach for Precision Molecular Imaging. Invest Radiol 2024; 59:170-186. [PMID: 38180819 DOI: 10.1097/rli.0000000000001057] [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: 01/07/2024]
Abstract
ABSTRACT Cancer and other acute and chronic diseases are results of perturbations of common molecular determinants in key biological and signaling processes. Imaging is critical for characterizing dynamic changes in tumors and metastases, the tumor microenvironment, tumor-stroma interactions, and drug targets, at multiscale levels. Magnetic resonance imaging (MRI) has emerged to be a primary imaging modality for both clinical and preclinical applications due to its advantages over other modalities, including sensitivity to soft tissues, nondepth limitations, and the use of nonionizing radiation. However, extending the application of MRI to achieve both qualitative and quantitative precise molecular imaging with the capability to quantify molecular biomarkers for early detection, staging, and monitoring therapeutic treatment requires the capacity to overcome several major challenges including the trade-off between metal-binding affinity and relaxivity, which is an issue frequently associated with small chelator contrast agents. In this review, we will introduce the criteria of ideal contrast agents for precision molecular imaging and discuss the relaxivity of current contrast agents with defined first shell coordination water molecules. We will then report our advances in creating a new class of protein-targeted MRI contrast agents (ProCAs) with contributions to relaxivity largely derived from the secondary sphere and correlation time. We will summarize our rationale, design strategy, and approaches to the development and optimization of our pioneering ProCAs with desired high relaxivity, metal stability, and molecular biomarker-targeting capability, for precision MRI. From first generation (ProCA1) to third generation (ProCA32), we have achieved dual high r1 and r2 values that are 6- to 10-fold higher than clinically approved contrast agents at magnetic fields of 1.5 T, and their relaxivity values at high field are also significantly higher, which enables high resolution during small animal imaging. Further engineering of multiple targeting moieties enables ProCA32 agents that have strong biomarker-binding affinity and specificity for an array of key molecular biomarkers associated with various chronic diseases, while maintaining relaxation and exceptional metal-binding and selectivity, serum stability, and resistance to transmetallation, which are critical in mitigating risks associated with metal toxicity. Our leading product ProCA32.collagen has enabled the first early detection of liver metastasis from multiple cancers at early stages by mapping the tumor environment and early stage of fibrosis from liver and lung in vivo, with strong translational potential to extend to precision MRI for preclinical and clinical applications for precision diagnosis and treatment.
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Affiliation(s)
- Dongjun Li
- From the Center for Diagnostics and Therapeutics, Advanced Translational Imaging Facility, Department of Chemistry, Georgia State University, Atlanta, GA (D.L., M.K., J.Q., Z.G., S.X., P.F., J.J., S.T., M.S., O.I., K.H., J.J.Y.); and InLighta BioSciences, LLC, Marietta, GA (Y.X., J.J.Y)
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5
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A R, Wang H, Nie C, Han Z, Zhou M, Atinuke OO, Wang K, Wang X, Liu S, Zhao J, Qiao W, Sun X, Wu L, Sun X. Glycerol-weighted chemical exchange saturation transfer nanoprobes allow 19F /1H dual-modality magnetic resonance imaging-guided cancer radiotherapy. Nat Commun 2023; 14:6644. [PMID: 37863898 PMCID: PMC10589257 DOI: 10.1038/s41467-023-42286-3] [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: 02/15/2023] [Accepted: 10/05/2023] [Indexed: 10/22/2023] Open
Abstract
Recently, radiotherapy (RT) has entered a new realm of precision cancer therapy with the introduction of magnetic resonance (MR) imaging guided radiotherapy systems into the clinic. Nonetheless, identifying an optimized radiotherapy time window (ORTW) is still critical for the best therapeutic efficacy of RT. Here we describe pH and O2 dual-sensitive, perfluorooctylbromide (PFOB)-based and glycerol-weighted chemical exchange saturation transfer (CEST) nano-molecular imaging probes (Gly-PFOBs) with dual fluorine and hydrogen proton based CEST MR imaging properties (19F/1H-CEST). Oxygenated Gly-PFOBs ameliorate tumor hypoxia and improve O2-dependent radiotherapy. Moreover, the pH and O2 dual-sensitive properties of Gly-PFOBs could be quantitatively, spatially, and temporally monitored by 19F/1H-CEST imaging to optimize ORTW. In this study, we describe the CEST signal characteristics exhibited by the glycerol components of Gly-PFOBs. The pH and O2 dual-sensitive Gly-PFOBs with19F/1H-CEST MR dual-modality imaging properties, with superior therapeutic efficacy and biosafety, are employed for sensitive imaging-guided lung cancer RT, illustrating the potential of multi-functional imaging to noninvasively monitor and enhance RT-integrated effectiveness.
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Affiliation(s)
- Rong A
- Department of Nuclear Medicine, the Fourth Hospital of Harbin Medical University, Heilongjiang Province, China
- NHC Key Laboratory of Molecular Probe and Targeted Diagnosis and Therapy, Molecular Imaging Research Center (MIRC) of Harbin Medical University, Heilongjiang Province, China
| | - Haoyu Wang
- Department of Nuclear Medicine, the Fourth Hospital of Harbin Medical University, Heilongjiang Province, China
- NHC Key Laboratory of Molecular Probe and Targeted Diagnosis and Therapy, Molecular Imaging Research Center (MIRC) of Harbin Medical University, Heilongjiang Province, China
| | - Chaoqun Nie
- NHC Key Laboratory of Molecular Probe and Targeted Diagnosis and Therapy, Molecular Imaging Research Center (MIRC) of Harbin Medical University, Heilongjiang Province, China
| | - Zhaoguo Han
- Department of Nuclear Medicine, the Fourth Hospital of Harbin Medical University, Heilongjiang Province, China
- NHC Key Laboratory of Molecular Probe and Targeted Diagnosis and Therapy, Molecular Imaging Research Center (MIRC) of Harbin Medical University, Heilongjiang Province, China
| | - Meifang Zhou
- Department of Nuclear Medicine, the Fourth Hospital of Harbin Medical University, Heilongjiang Province, China
- NHC Key Laboratory of Molecular Probe and Targeted Diagnosis and Therapy, Molecular Imaging Research Center (MIRC) of Harbin Medical University, Heilongjiang Province, China
| | - Olagbaju Oluwatosin Atinuke
- Department of Nuclear Medicine, the Fourth Hospital of Harbin Medical University, Heilongjiang Province, China
- NHC Key Laboratory of Molecular Probe and Targeted Diagnosis and Therapy, Molecular Imaging Research Center (MIRC) of Harbin Medical University, Heilongjiang Province, China
| | - Kaiqi Wang
- Department of Nuclear Medicine, the Fourth Hospital of Harbin Medical University, Heilongjiang Province, China
- NHC Key Laboratory of Molecular Probe and Targeted Diagnosis and Therapy, Molecular Imaging Research Center (MIRC) of Harbin Medical University, Heilongjiang Province, China
| | - Xiance Wang
- Department of Nuclear Medicine, the Fourth Hospital of Harbin Medical University, Heilongjiang Province, China
- NHC Key Laboratory of Molecular Probe and Targeted Diagnosis and Therapy, Molecular Imaging Research Center (MIRC) of Harbin Medical University, Heilongjiang Province, China
| | - Shuang Liu
- Department of Nuclear Medicine, the Fourth Hospital of Harbin Medical University, Heilongjiang Province, China
- NHC Key Laboratory of Molecular Probe and Targeted Diagnosis and Therapy, Molecular Imaging Research Center (MIRC) of Harbin Medical University, Heilongjiang Province, China
| | - Jingshi Zhao
- NHC Key Laboratory of Molecular Probe and Targeted Diagnosis and Therapy, Molecular Imaging Research Center (MIRC) of Harbin Medical University, Heilongjiang Province, China
| | - Wenju Qiao
- Department of Nuclear Medicine, the Fourth Hospital of Harbin Medical University, Heilongjiang Province, China
- NHC Key Laboratory of Molecular Probe and Targeted Diagnosis and Therapy, Molecular Imaging Research Center (MIRC) of Harbin Medical University, Heilongjiang Province, China
| | - Xiaohong Sun
- Department of Nuclear Medicine, the Fourth Hospital of Harbin Medical University, Heilongjiang Province, China
- NHC Key Laboratory of Molecular Probe and Targeted Diagnosis and Therapy, Molecular Imaging Research Center (MIRC) of Harbin Medical University, Heilongjiang Province, China
| | - Lina Wu
- Department of Nuclear Medicine, the Fourth Hospital of Harbin Medical University, Heilongjiang Province, China
- NHC Key Laboratory of Molecular Probe and Targeted Diagnosis and Therapy, Molecular Imaging Research Center (MIRC) of Harbin Medical University, Heilongjiang Province, China
| | - Xilin Sun
- Department of Nuclear Medicine, the Fourth Hospital of Harbin Medical University, Heilongjiang Province, China.
- NHC Key Laboratory of Molecular Probe and Targeted Diagnosis and Therapy, Molecular Imaging Research Center (MIRC) of Harbin Medical University, Heilongjiang Province, China.
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MRI Contrast Agents in Glycobiology. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27238297. [PMID: 36500389 PMCID: PMC9735696 DOI: 10.3390/molecules27238297] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/20/2022] [Accepted: 11/21/2022] [Indexed: 11/29/2022]
Abstract
Molecular recognition involving glycoprotein-mediated interactions is ubiquitous in both normal and pathological natural processes. Therefore, visualization of these interactions and the extent of expression of the sugars is a challenge in medical diagnosis, monitoring of therapy, and drug design. Here, we review the literature on the development and validation of probes for magnetic resonance imaging using carbohydrates either as targeting vectors or as a target. Lectins are important targeting vectors for carbohydrate end groups, whereas selectins, the asialoglycoprotein receptor, sialic acid end groups, hyaluronic acid, and glycated serum and hemoglobin are interesting carbohydrate targets.
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7
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Morrow JR, Raymond JJ, Chowdhury MSI, Sahoo PR. Redox-Responsive MRI Probes Based on First-Row Transition-Metal Complexes. Inorg Chem 2022; 61:14487-14499. [PMID: 36067522 DOI: 10.1021/acs.inorgchem.2c02197] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The presence of multiple oxidation and spin states of first-row transition-metal complexes facilitates the development of switchable MRI probes. Redox-responsive probes capitalize on a change in the magnetic properties of the different oxidation states of the paramagnetic metal ion center upon exposure to biological oxidants and reductants. Transition-metal complexes that are useful for MRI can be categorized according to whether they accelerate water proton relaxation (T1 or T2 agents), induce paramagnetic shifts of 1H or 19F resonances (paraSHIFT agents), or are chemical exchange saturation transfer (CEST) agents. The various oxidation state couples and their properties as MRI probes are summarized with a focus on Co(II)/Co(III) or Fe(II)/Fe(III) complexes as small molecules or as liposomal agents. Solution studies of these MRI probes are reviewed with an emphasis on redox changes upon treatment with oxidants or with enzymes that are physiologically important in inflammation and disease. Finally, we outline the challenges of developing these probes further for in vivo MRI applications.
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Affiliation(s)
- Janet R Morrow
- Department of Chemistry, University at Buffalo, the State University of New York, Amherst, New York 14260, United States
| | - Jaclyn J Raymond
- Department of Chemistry, University at Buffalo, the State University of New York, Amherst, New York 14260, United States
| | - Md Saiful I Chowdhury
- Department of Chemistry, University at Buffalo, the State University of New York, Amherst, New York 14260, United States
| | - Priya Ranjan Sahoo
- Department of Chemistry, University at Buffalo, the State University of New York, Amherst, New York 14260, United States
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8
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Vaudin P, Augé C, Just N, Mhaouty-Kodja S, Mortaud S, Pillon D. When pharmaceutical drugs become environmental pollutants: Potential neural effects and underlying mechanisms. ENVIRONMENTAL RESEARCH 2022; 205:112495. [PMID: 34883077 DOI: 10.1016/j.envres.2021.112495] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 11/12/2021] [Accepted: 12/01/2021] [Indexed: 06/13/2023]
Abstract
Pharmaceutical drugs have become consumer products, with a daily use for some of them. The volume of production and consumption of drugs is such that they have become environmental pollutants. Their transfer to wastewater through urine, feces or rinsing in case of skin use, associated with partial elimination by wastewater treatment plants generalize pollution in the hydrosphere, including drinking water, sediments, soils, the food chain and plants. Here, we review the potential effects of environmental exposure to three classes of pharmaceutical drugs, i.e. antibiotics, antidepressants and non-steroidal anti-inflammatory drugs, on neurodevelopment. Experimental studies analyzing their underlying modes of action including those related to endocrine disruption, and molecular mechanisms including epigenetic modifications are presented. In addition, the contribution of brain imaging to the assessment of adverse effects of these three classes of pharmaceuticals is approached.
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Affiliation(s)
- Pascal Vaudin
- Physiologie de La Reproduction et des Comportements, CNRS, IFCE, INRAE, Université de Tours, PRC, F-37380, Nouzilly, France.
| | - Corinne Augé
- UMR 1253, IBrain, University of Tours, INSERM, 37000, Tours, France
| | - Nathalie Just
- Physiologie de La Reproduction et des Comportements, CNRS, IFCE, INRAE, Université de Tours, PRC, F-37380, Nouzilly, France
| | - Sakina Mhaouty-Kodja
- Sorbonne Université, CNRS, INSERM, Neuroscience Paris Seine - Institut de Biologie Paris Seine, 75005, Paris, France
| | - Stéphane Mortaud
- Immunologie et Neurogénétique Expérimentales et Moléculaires, UMR7355, CNRS, Université D'Orléans, 45000, Orléans, France
| | - Delphine Pillon
- Physiologie de La Reproduction et des Comportements, CNRS, IFCE, INRAE, Université de Tours, PRC, F-37380, Nouzilly, France
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Karbalaei S, Goldsmith CR. Recent advances in the preclinical development of responsive MRI contrast agents capable of detecting hydrogen peroxide. J Inorg Biochem 2022; 230:111763. [DOI: 10.1016/j.jinorgbio.2022.111763] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 02/07/2022] [Accepted: 02/09/2022] [Indexed: 01/10/2023]
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10
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Wellm V, Groebner J, Heitmann G, Sönnichsen FD, Herges R. Towards Photoswitchable Contrast Agents for Absolute 3D Temperature MR Imaging. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202015851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Vanessa Wellm
- Otto Diels Institute of Organic Chemistry Christian Albrechts University Otto Hahn Platz 4 24118 Kiel Germany
| | - Jens Groebner
- Department of Electrical Engineering and Information Technology South Westphalian University of Applied Sciences Bahnhofsallee 5 58507 Luedenscheid Germany
| | - Gernot Heitmann
- IWS Innovations- und Wissenstrategien GmbH Aviares Research Network Deichstraße 25 20459 Hamburg Germany
| | - Frank D. Sönnichsen
- Otto Diels Institute of Organic Chemistry Christian Albrechts University Otto Hahn Platz 4 24118 Kiel Germany
| | - Rainer Herges
- Otto Diels Institute of Organic Chemistry Christian Albrechts University Otto Hahn Platz 4 24118 Kiel Germany
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11
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Wellm V, Groebner J, Heitmann G, Sönnichsen FD, Herges R. Towards Photoswitchable Contrast Agents for Absolute 3D Temperature MR Imaging. Angew Chem Int Ed Engl 2021; 60:8220-8226. [PMID: 33606332 PMCID: PMC8048480 DOI: 10.1002/anie.202015851] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Indexed: 12/27/2022]
Abstract
Temperature can be used as clinical marker for tissue metabolism and the detection of inflammations or tumors. The use of magnetic resonance imaging (MRI) for monitoring physiological parameters like the temperature noninvasively is steadily increasing. In this study, we present a proof-of-principle study of MRI contrast agents (CA) for absolute and concentration independent temperature imaging. These CAs are based on azoimidazole substituted NiII porphyrins, which can undergo Light-Driven Coordination-Induced Spin State Switching (LD-CISSS) in solution. Monitoring the fast first order kinetic of back isomerisation (cis to trans) with standard clinical MR imaging sequences allows the determination of half-lives, that can be directly translated into absolute temperatures. Different temperature responsive CAs were successfully tested as prototypes in methanol-based gels and created temperature maps of gradient phantoms with high spatial resolution (0.13×0.13×1.1 mm) and low temperature errors (<0.22 °C). The method is sufficiently fast to record the temperature flow from a heat source as a film.
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Affiliation(s)
- Vanessa Wellm
- Otto Diels Institute of Organic ChemistryChristian Albrechts UniversityOtto Hahn Platz 424118KielGermany
| | - Jens Groebner
- Department of Electrical Engineering and Information TechnologySouth Westphalian University of Applied SciencesBahnhofsallee 558507LuedenscheidGermany
| | - Gernot Heitmann
- IWS Innovations- und Wissenstrategien GmbHAviares Research NetworkDeichstraße 2520459HamburgGermany
| | - Frank D. Sönnichsen
- Otto Diels Institute of Organic ChemistryChristian Albrechts UniversityOtto Hahn Platz 424118KielGermany
| | - Rainer Herges
- Otto Diels Institute of Organic ChemistryChristian Albrechts UniversityOtto Hahn Platz 424118KielGermany
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12
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Falcone E, Okafor M, Vitale N, Raibaut L, Sour A, Faller P. Extracellular Cu2+ pools and their detection: From current knowledge to next-generation probes. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213727] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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13
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Wang H, Wong A, Lewis LC, Nemeth GR, Jordan VC, Bacon JW, Caravan P, Shafaat HS, Gale EM. Rational Ligand Design Enables pH Control over Aqueous Iron Magnetostructural Dynamics and Relaxometric Properties. Inorg Chem 2020; 59:17712-17721. [PMID: 33216537 DOI: 10.1021/acs.inorgchem.0c02923] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Complexes of Fe3+ engage in rich aqueous solution speciation chemistry in which discrete molecules can react with solvent water to form multinuclear μ-oxo and μ-hydroxide bridged species. Here we demonstrate how pH- and concentration-dependent equilibration between monomeric and μ-oxo-bridged dimeric Fe3+ complexes can be controlled through judicious ligand design. We purposed this chemistry to develop a first-in-class Fe3+-based MR imaging probe, Fe-PyCy2AI, that undergoes relaxivity change via pH-mediated control of monomer vs dimer speciation. The monomeric complex exists in a S = 5/2 configuration capable of inducing efficient T1-relaxation, whereas the antiferromagnetically coupled dimeric complex is a much weaker relaxation agent. The mechanisms underpinning the pH dependence on relaxivity were interrogated by using a combination of pH potentiometry, 1H and 17O relaxometry, electronic absorption spectroscopy, bulk magnetic susceptibility, electron paramagnetic resonance spectroscopy, and X-ray crystallography measurements. Taken together, the data demonstrate that PyCy2AI forms a ternary complex with high-spin Fe3+ and a rapidly exchanging water coligand, [Fe(PyCy2AI)(H2O)]+ (ML), which can deprotonate to form the high-spin complex [Fe(PyCy2AI)(OH)] (ML(OH)). Under titration conditions of 7 mM Fe complex, water coligand deprotonation occurs with an apparent pKa 6.46. Complex ML(OH) dimerizes to form the antiferromagnetically coupled dimeric complex [(Fe(PyCy2AI))2O] ((ML)2O) with an association constant (Ka) of 5.3 ± 2.2 mM-1. The relaxivity of the monomeric complexes are between 7- and 18-fold greater than the antiferromagnetically coupled dimer at applied field strengths ranging between 1.4 and 11.7 T. ML(OH) and (ML)2O interconvert rapidly within the pH 6.0-7.4 range that is relevant to human pathophysiology, resulting in substantial observed relaxivity change. Controlling Fe3+ μ-oxo bridging interactions through rational ligand design and in response to local chemical environment offers a robust mechanism for biochemically responsive MR signal modulation.
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Affiliation(s)
| | | | - Luke C Lewis
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210, United States
| | | | | | - Jeffrey W Bacon
- Department of Chemistry, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
| | | | - Hannah S Shafaat
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210, United States
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14
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Reichardt W, von Elverfeldt D. Preclinical Applications of Magnetic Resonance Imaging in Oncology. Recent Results Cancer Res 2020; 216:405-437. [PMID: 32594394 DOI: 10.1007/978-3-030-42618-7_12] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The evolving possibilities of molecular imaging (MI) are fundamentally changing the way we look at cancer, with imaging paradigms now shifting away from basic morphological measures toward the longitudinal assessment of functional, metabolic, cellular, and molecular information in vivo. Recent developments of imaging methodology and probe molecules utilizing the vast number of novel animal models of human cancers have enhanced our ability to non-invasively characterize neoplastic tissue and follow anticancer treatments. While preclinical molecular imaging offers a whole palette of excellent methodology to choose from, we will focus on magnetic resonance imaging (MRI) techniques, since they provide excellent molecular imaging capabilities and bear high potential for clinical translation. Prerequisites and consequences of using animal models as surrogates of human cancers in preclinical molecular imaging are outlined. We present physical principles, values, and limitations of MRI as molecular imaging modality and comment on its high potential to non-invasively assess information on metabolism, hypoxia, angiogenesis, and cell trafficking in preclinical cancer research.
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Affiliation(s)
- Wilfried Reichardt
- Medical Physics, Department of Radiology, Faculty of Medicine, University of Freiburg, Freiburg, Germany. .,German Consortium for Translational Cancer Research (DKTK), Heidelberg, Germany. .,German Cancer Research Center (DKFZ), Heidelberg, Germany.
| | - Dominik von Elverfeldt
- Medical Physics, Department of Radiology, Faculty of Medicine, University of Freiburg, Freiburg, Germany
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15
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Xie D, Yu M, Xie Z, Kadakia RT, Chung C, Ohman LE, Javanmardi K, Que EL. Versatile Nickel(II) Scaffolds as Coordination‐Induced Spin‐State Switches for
19
F Magnetic Resonance‐Based Detection. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202010587] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Da Xie
- Department of Chemistry The University of Texas at Austin 105 E. 24th St Stop A5300 Austin TX 78712 USA
| | - Meng Yu
- Department of Chemistry The University of Texas at Austin 105 E. 24th St Stop A5300 Austin TX 78712 USA
| | - Zhu‐Lin Xie
- Department of Chemistry The University of Texas at Austin 105 E. 24th St Stop A5300 Austin TX 78712 USA
| | - Rahul T. Kadakia
- Department of Chemistry The University of Texas at Austin 105 E. 24th St Stop A5300 Austin TX 78712 USA
| | - Chris Chung
- Department of Chemistry The University of Texas at Austin 105 E. 24th St Stop A5300 Austin TX 78712 USA
| | - Lauren E. Ohman
- Department of Chemistry The University of Texas at Austin 105 E. 24th St Stop A5300 Austin TX 78712 USA
| | - Kamyab Javanmardi
- Department of Molecular Biosciences The University of Texas at Austin 2500 Speedway Austin TX 78712 USA
| | - Emily L. Que
- Department of Chemistry The University of Texas at Austin 105 E. 24th St Stop A5300 Austin TX 78712 USA
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16
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Xie D, Yu M, Xie ZL, Kadakia RT, Chung C, Ohman LE, Javanmardi K, Que EL. Versatile Nickel(II) Scaffolds as Coordination-Induced Spin-State Switches for 19 F Magnetic Resonance-Based Detection. Angew Chem Int Ed Engl 2020; 59:22523-22530. [PMID: 32790890 DOI: 10.1002/anie.202010587] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Indexed: 12/15/2022]
Abstract
19 F magnetic resonance (MR) based detection coupled with well-designed inorganic systems shows promise in biological investigations. Two proof-of-concept inorganic probes that exploit a novel mechanism for 19 F MR sensing based on converting from low-spin (S=0) to high-spin (S=1) Ni2+ are reported. Activation of diamagnetic NiL1 and NiL2 by light or β-galactosidase, respectively, converts them into paramagnetic NiL0 , which displays a single 19 F NMR peak shifted by >35 ppm with accelerated relaxation rates. This spin-state switch is effective for sensing light or enzyme expression in live cells using 19 F MR spectroscopy and imaging that differentiate signals based on chemical shift and relaxation times. This general inorganic scaffold has potential for developing agents that can sense analytes ranging from ions to enzymes, opening up diverse possibilities for 19 F MR based biosensing.
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Affiliation(s)
- Da Xie
- Department of Chemistry, The University of Texas at Austin, 105 E. 24th St Stop A5300, Austin, TX, 78712, USA
| | - Meng Yu
- Department of Chemistry, The University of Texas at Austin, 105 E. 24th St Stop A5300, Austin, TX, 78712, USA
| | - Zhu-Lin Xie
- Department of Chemistry, The University of Texas at Austin, 105 E. 24th St Stop A5300, Austin, TX, 78712, USA
| | - Rahul T Kadakia
- Department of Chemistry, The University of Texas at Austin, 105 E. 24th St Stop A5300, Austin, TX, 78712, USA
| | - Chris Chung
- Department of Chemistry, The University of Texas at Austin, 105 E. 24th St Stop A5300, Austin, TX, 78712, USA
| | - Lauren E Ohman
- Department of Chemistry, The University of Texas at Austin, 105 E. 24th St Stop A5300, Austin, TX, 78712, USA
| | - Kamyab Javanmardi
- Department of Molecular Biosciences, The University of Texas at Austin, 2500 Speedway, Austin, TX, 78712, USA
| | - Emily L Que
- Department of Chemistry, The University of Texas at Austin, 105 E. 24th St Stop A5300, Austin, TX, 78712, USA
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17
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Abstract
The anchoring of lanthanide(III) chelates on the surface of mesoporous silica nanoparticles (MSNs) allowed their investigation as magnetic resonance imaging (MRI) and chemical exchange saturation transfer (CEST) contrast agents. Since their efficiency is strongly related to the interaction occurring between Ln-chelates and “bulk” water, an estimation of the water diffusion inside MSNs channels is very relevant. Herein, a method based on the exploitation of the CEST properties of TbDO3A-MSNs was applied to evaluate the effect of water diffusion inside MSN channels. Two MSNs, namely MCM-41 and SBA-15, with different pores size distributions were functionalized with TbDO3A-like chelates and polyethylene glycol (PEG) molecules and characterized by HR-TEM microscopy, IR spectroscopy, N2 physisorption, and thermogravimetric analysis (TGA). The different distribution of Tb-complexes in the two systems, mainly on the external surface in case of MCM-41 or inside the internal pores for SBA-15, resulted in variable CEST efficiency. Since water molecules diffuse slowly inside silica channels, the CEST effect of the LnDO3A-SBA-15 system was found to be one order of magnitude lower than in the case of TbDO3A-MCM-41. The latter system reaches an excellent sensitivity of ca. 55 ± 5 μM, which is useful for future theranostic or imaging applications.
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18
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Quesada-Olarte JM, Allaf ME, Alvarez-Maestro M, Martínez-Piñeiro L. Molecular imaging of prostate cancer: Review of imaging agents, modalities, and current status. Actas Urol Esp 2020; 44:386-399. [PMID: 32709428 DOI: 10.1016/j.acuro.2019.12.003] [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: 12/11/2019] [Accepted: 12/17/2019] [Indexed: 11/17/2022]
Abstract
INTRODUCTION The clinical course of Prostate cancer (PCa) are markedly diverse, ranging from indolent to highly aggressive disseminated disease. Molecular imaging techniques are playing an increasing role in early PCa detection, staging and disease recurrence. There are some molecular imaging modalities, radiotracers agents and its performance are important in current clinical practice PCa. OBJECTIVE This review summarizes the latest information regarding molecular imaging of PCa and is designed to assist urologists with ordering and interpreting these modalities and different radiotracers for different patients. EVIDENCE ACQUISITION A PubMed-based literature search was conducted up to September 2019. We selected the most recent and relevant original articles, metanalysis and reviews that have provided relevant information to guide molecular imaging modalities and radiotracers use. EVIDENCE SYNTHESIS In this review, we discuss 3 main molecular imaging modalities and 7 radiotracer technologies available. CONCLUSIONS The use molecular imaging modalities and radiotracers has a unique role in biochemical recurrence and diagnosis of ganglionar and bone progression of PCa. In the present time, no one of these molecular imaging modalities can be recommended over the classical work-up of abdominopelvic CT scan and bone scan, and large-scale and multi-institutional studies are required to validate the efficacy and cost utility of these new technologies.
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Affiliation(s)
| | - M E Allaf
- Departamento de Urología, Johns Hopkins University Hospital, Baltimore, Estados Unidos
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19
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Wydra K, Kobyłka MJ, Lis T, Ślepokura K, Lisowski J. Versatile Binding Modes of Chiral Macrocyclic Amine towards Rare Earth Ions. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000247] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Karol Wydra
- Department of Chemistry University of Wrocław 14 F. Joliot‐Curie 50‐383 Wrocław Poland
| | - Michał J. Kobyłka
- Department of Chemistry University of Wrocław 14 F. Joliot‐Curie 50‐383 Wrocław Poland
| | - Tadeusz Lis
- Department of Chemistry University of Wrocław 14 F. Joliot‐Curie 50‐383 Wrocław Poland
| | - Katarzyna Ślepokura
- Department of Chemistry University of Wrocław 14 F. Joliot‐Curie 50‐383 Wrocław Poland
| | - Jerzy Lisowski
- Department of Chemistry University of Wrocław 14 F. Joliot‐Curie 50‐383 Wrocław Poland
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20
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Botár R, Molnár E, Trencsényi G, Kiss J, Kálmán FK, Tircsó G. Stable and Inert Mn(II)-Based and pH-Responsive Contrast Agents. J Am Chem Soc 2020; 142:1662-1666. [DOI: 10.1021/jacs.9b09407] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Richárd Botár
- Department of Physical Chemistry, University of Debrecen, H-4032 Debrecen, Hungary
| | - Enikő Molnár
- Department of Physical Chemistry, University of Debrecen, H-4032 Debrecen, Hungary
| | - György Trencsényi
- Division of Nuclear Medicine, Department of Medical Imaging, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary
| | - János Kiss
- Division of Nuclear Medicine, Department of Medical Imaging, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary
- Mediso Ltd., H-4032 Debrecen, Hungary
| | - Ferenc K. Kálmán
- Department of Physical Chemistry, University of Debrecen, H-4032 Debrecen, Hungary
| | - Gyula Tircsó
- Department of Physical Chemistry, University of Debrecen, H-4032 Debrecen, Hungary
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21
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Garello F, Gündüz S, Vibhute S, Angelovski G, Terreno E. Dendrimeric calcium-sensitive MRI probes: the first low-field relaxometric study. J Mater Chem B 2020; 8:969-979. [DOI: 10.1039/c9tb02600b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the present work the first investigation ever of calcium sensitive dendrimer relaxation mechanisms at low fields is reported.
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Affiliation(s)
- Francesca Garello
- Molecular and Preclinical Imaging Centers
- Department of Molecular Biotechnology and Health Sciences
- University of Torino
- 10126 Torino
- Italy
| | - Serhat Gündüz
- MR Neuroimaging Agents
- Max Planck Institute for Biological Cybernetics
- Max-Planck-Ring 11
- 72076 Tuebingen
- Germany
| | - Sandip Vibhute
- Physiology of Cognitive Processes
- Max Planck Institute for Biological Cybernetics
- Max-Planck-Ring 8
- 72076 Tuebingen
- Germany
| | - Goran Angelovski
- MR Neuroimaging Agents
- Max Planck Institute for Biological Cybernetics
- Max-Planck-Ring 11
- 72076 Tuebingen
- Germany
| | - Enzo Terreno
- Molecular and Preclinical Imaging Centers
- Department of Molecular Biotechnology and Health Sciences
- University of Torino
- 10126 Torino
- Italy
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22
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Wang CX, Li Y, Li ZF, Liu ZJ, Valeev EF, Moskaleva LV. Combined Relativistic Ab Initio Multireference and Experimental Study of the Electronic Structure of Terbium Luminescent Compound. J Phys Chem A 2019; 124:82-89. [DOI: 10.1021/acs.jpca.9b11089] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Chun-Xiang Wang
- School of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, People’s Republic of China
| | - Yong Li
- Institute of Applied and Physical Chemistry and Center for Environmental Research and Sustainable Technology, University of Bremen, Bremen 28359, Germany
| | - Zhi-Feng Li
- School of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, People’s Republic of China
| | - Zhi-Jun Liu
- School of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, People’s Republic of China
| | - Edward F. Valeev
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Lyudmila V. Moskaleva
- Institute of Applied and Physical Chemistry and Center for Environmental Research and Sustainable Technology, University of Bremen, Bremen 28359, Germany
- Department of Chemistry, University of the Free State, PO Box 339, Bloemfontein 9300, South Africa
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23
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Dommaschk M, Gröbner J, Wellm V, Hövener JB, Riedel C, Herges R. Dendronised Ni(ii) porphyrins as photoswitchable contrast agents for MRI. Phys Chem Chem Phys 2019; 21:24296-24299. [PMID: 31686082 DOI: 10.1039/c9cp04156g] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Light-responsive contrast agents for magnetic resonance imaging (MRI) based on Ni(ii) porphyrin molecular spin switches have recently been introduced. We present their implementation in water and methanol based gels leading to the first soft materials that are rewritable with light and readable with MRI. Light of two different wavelengths as non-invasive stimuli can be applied to switch MRI contrast on and off, with a high spatiotemporal resolution and without fatigue.
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Affiliation(s)
- Marcel Dommaschk
- Otto-Diels-Institute of Organic Chemistry, Christian Albrechts University Kiel, Otto Hahn Platz 4, 24118 Kiel, Germany.
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24
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Fu C, Tang J, Pye A, Liu T, Zhang C, Tan X, Han F, Peng H, Whittaker AK. Fluorinated Glycopolymers as Reduction-responsive 19F MRI Agents for Targeted Imaging of Cancer. Biomacromolecules 2019; 20:2043-2050. [PMID: 30995836 DOI: 10.1021/acs.biomac.9b00241] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Imaging agents that can be targeted to specific diseases and respond to the microenvironment of the diseased tissue are of considerable interest due to their potential in diagnosing and managing diseases. Here we report a new class of branched fluorinated glycopolymers as 19F MRI contrast agents that respond to a reductive environment, for targeted imaging of cancer. The fluorinated glycopolymers can be readily prepared by a one-pot RAFT polymerization of glucose- and fluorine-containing monomers in the presence of a disulfide-containing cross-linking monomer. The incorporation of glucose units along the polymer chain enables these fluorinated glycopolymers to effectively target cancer cells due to interactions with the overexpressed sugar transporters present on the cell surface. In addition, the polymers exhibit an enhanced 19F MRI signal in response to a reductive environment, one of the unique hallmarks of many cancer cells, demonstrating their potential as promising candidates for targeted imaging of cancer.
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Affiliation(s)
- Changkui Fu
- Australian Institute for Bioengineering and Nanotechnology , The University of Queensland , Brisbane , Queensland 4072 , Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , The University of Queensland , Brisbane , Queensland 4072 , Australia
| | - Joyce Tang
- Australian Institute for Bioengineering and Nanotechnology , The University of Queensland , Brisbane , Queensland 4072 , Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , The University of Queensland , Brisbane , Queensland 4072 , Australia
| | - Aidan Pye
- Australian Institute for Bioengineering and Nanotechnology , The University of Queensland , Brisbane , Queensland 4072 , Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , The University of Queensland , Brisbane , Queensland 4072 , Australia
| | - Tianqing Liu
- QIMR Berghofer Medical Research Institute , PO Royal Brisbane Hospital , Brisbane , Queensland 4029 , Australia
| | - Cheng Zhang
- Australian Institute for Bioengineering and Nanotechnology , The University of Queensland , Brisbane , Queensland 4072 , Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , The University of Queensland , Brisbane , Queensland 4072 , Australia
| | - Xiao Tan
- Australian Institute for Bioengineering and Nanotechnology , The University of Queensland , Brisbane , Queensland 4072 , Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , The University of Queensland , Brisbane , Queensland 4072 , Australia
| | - Felicity Han
- Australian Institute for Bioengineering and Nanotechnology , The University of Queensland , Brisbane , Queensland 4072 , Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , The University of Queensland , Brisbane , Queensland 4072 , Australia
| | - Hui Peng
- Australian Institute for Bioengineering and Nanotechnology , The University of Queensland , Brisbane , Queensland 4072 , Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , The University of Queensland , Brisbane , Queensland 4072 , Australia
| | - Andrew K Whittaker
- Australian Institute for Bioengineering and Nanotechnology , The University of Queensland , Brisbane , Queensland 4072 , Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , The University of Queensland , Brisbane , Queensland 4072 , Australia
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25
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Wang H, Jordan VC, Ramsay IA, Sojoodi M, Fuchs BC, Tanabe KK, Caravan P, Gale EM. Molecular Magnetic Resonance Imaging Using a Redox-Active Iron Complex. J Am Chem Soc 2019; 141:5916-5925. [PMID: 30874437 PMCID: PMC6726119 DOI: 10.1021/jacs.9b00603] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We introduce a redox-active iron complex, Fe-PyC3A, as a biochemically responsive MRI contrast agent. Switching between Fe3+-PyC3A and Fe2+-PyC3A yields a full order of magnitude relaxivity change that is field-independent between 1.4 and 11.7 T. The oxidation of Fe2+-PyC3A to Fe3+-PyC3A by hydrogen peroxide is very rapid, and we capitalized on this behavior for the molecular imaging of acute inflammation, which is characterized by elevated levels of reactive oxygen species. Injection of Fe2+-PyC3A generates strong, selective contrast enhancement of inflamed pancreatic tissue in a mouse model (caerulein/LPS model). No significant signal enhancement is observed in normal pancreatic tissue (saline-treated mice). Importantly, signal enhancement of the inflamed pancreas correlates strongly and significantly with ex vivo quantitation of the pro-inflammatory biomarker myeloperoxidase. This is the first example of using metal ion redox for the MR imaging of pathologic change in vivo. Redox-active Fe3+/2+ complexes represent a new design paradigm for biochemically responsive MRI contrast agents.
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Affiliation(s)
- Huan Wang
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital/Harvard Medical School, 149 Thirteenth Street, Charlestown, Massachusetts 02129, United States
| | - Veronica Clavijo Jordan
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital/Harvard Medical School, 149 Thirteenth Street, Charlestown, Massachusetts 02129, United States
- Institute for Innovation in Imaging, Department of Radiology, Massachusetts General Hospital, 55 Fruit Street, Boston, Massachusetts 02114, United States
| | - Ian A. Ramsay
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital/Harvard Medical School, 149 Thirteenth Street, Charlestown, Massachusetts 02129, United States
| | - Mozhdeh Sojoodi
- Division of Surgical Oncology, Massachusetts General Hospital/Harvard Medical School, WRN401, 55 Fruit Street, Boston, Massachusetts 02114, United States
| | - Bryan C. Fuchs
- Division of Surgical Oncology, Massachusetts General Hospital/Harvard Medical School, WRN401, 55 Fruit Street, Boston, Massachusetts 02114, United States
| | - Kenneth K. Tanabe
- Division of Surgical Oncology, Massachusetts General Hospital/Harvard Medical School, WRN401, 55 Fruit Street, Boston, Massachusetts 02114, United States
| | - Peter Caravan
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital/Harvard Medical School, 149 Thirteenth Street, Charlestown, Massachusetts 02129, United States
- Institute for Innovation in Imaging, Department of Radiology, Massachusetts General Hospital, 55 Fruit Street, Boston, Massachusetts 02114, United States
| | - Eric M. Gale
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital/Harvard Medical School, 149 Thirteenth Street, Charlestown, Massachusetts 02129, United States
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26
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Chemical exchange saturation transfer (CEST) as a new method of signal obtainment in magnetic resonance molecular imaging in clinical and research practice. Pol J Radiol 2019; 84:e147-e152. [PMID: 31019609 PMCID: PMC6479148 DOI: 10.5114/pjr.2019.84242] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Accepted: 02/14/2019] [Indexed: 01/04/2023] Open
Abstract
The work describes the physical basis of the chemical exchange saturation transfer (CEST) technique; it presents the beginnings of the implementation of the method and its possible applications. The principles of correct data acquisition and possible solutions used during the design of the CEST sequence are shown. The main problems related to data analysis are indicated, and an example Z-spectrum from in vivo study of the rat brain is introduced. Furthermore, the parameters related to spectrum analyses such as magnetisation transfer asymmetry (MTRasym) and amide proton transfer asymmetry (APTasym) are presented. In the following part, different types of the CEST method often mentioned in the literature are discussed. Subsequently, the possible applications of the CEST method in both clinical and experimental practice are described.
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27
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28
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Barandov A, Bartelle BB, Williamson CG, Loucks ES, Lippard SJ, Jasanoff A. Sensing intracellular calcium ions using a manganese-based MRI contrast agent. Nat Commun 2019; 10:897. [PMID: 30796208 PMCID: PMC6385297 DOI: 10.1038/s41467-019-08558-7] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 01/15/2019] [Indexed: 12/19/2022] Open
Abstract
Calcium ions are essential to signal transduction in virtually all cells, where they coordinate processes ranging from embryogenesis to neural function. Although optical probes for intracellular calcium imaging have been available for decades, the development of probes for noninvasive detection of intracellular calcium signaling in deep tissue and intact organisms remains a challenge. To address this problem, we synthesized a manganese-based paramagnetic contrast agent, ManICS1-AM, designed to permeate cells, undergo esterase cleavage, and allow intracellular calcium levels to be monitored by magnetic resonance imaging (MRI). Cells loaded with ManICS1-AM show changes in MRI contrast when stimulated with pharmacological agents or optogenetic tools; responses directly parallel the signals obtained using fluorescent calcium indicators. Introduction of ManICS1-AM into rodent brains furthermore permits MRI-based measurement of neural activation in optically inaccessible brain regions. These results thus validate ManICS1-AM as a calcium sensor compatible with the extensive penetration depth and field of view afforded by MRI.
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Affiliation(s)
- Ali Barandov
- Department of Biological Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave. Rm. 16-561, Cambridge, MA, 02139, USA
| | - Benjamin B Bartelle
- Department of Biological Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave. Rm. 16-561, Cambridge, MA, 02139, USA
| | - Catherine G Williamson
- Department of Biological Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave. Rm. 16-561, Cambridge, MA, 02139, USA
| | - Emily S Loucks
- Department of Biological Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave. Rm. 16-561, Cambridge, MA, 02139, USA
| | - Stephen J Lippard
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave. Rm. 16-561, Cambridge, MA, 02139, USA
| | - Alan Jasanoff
- Department of Biological Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave. Rm. 16-561, Cambridge, MA, 02139, USA. .,Department of Brain & Cognitive Sciences, Massachusetts Institute of Technology, 77 Massachusetts Ave. Rm. 16-561, Cambridge, MA, 02139, USA. .,Department of Nuclear Science & Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave. Rm. 16-561, Cambridge, MA, 02139, USA.
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29
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Ferrauto G, Delli Castelli D, Leone L, Botta M, Aime S, Baranyai Z, Tei L. Modifying LnHPDO3A Chelates for Improved
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and CEST MRI Applications. Chemistry 2019; 25:4184-4193. [DOI: 10.1002/chem.201806023] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Indexed: 12/14/2022]
Affiliation(s)
- Giuseppe Ferrauto
- Department of Molecular Biotechnology and Health Sciences, Molecular Imaging CentreUniversity of Torino via Nizza 52 10125 Torino Italy
| | - Daniela Delli Castelli
- Department of Molecular Biotechnology and Health Sciences, Molecular Imaging CentreUniversity of Torino via Nizza 52 10125 Torino Italy
| | - Loredana Leone
- Department of Sciences and Technological InnovationUniversity of Eastern Piedmont viale T. Michel 11 50121 Alessandria Italy
| | - Mauro Botta
- Department of Sciences and Technological InnovationUniversity of Eastern Piedmont viale T. Michel 11 50121 Alessandria Italy
| | - Silvio Aime
- Department of Molecular Biotechnology and Health Sciences, Molecular Imaging CentreUniversity of Torino via Nizza 52 10125 Torino Italy
| | - Zsolt Baranyai
- Department of Inorganic and Analytical ChemistryUniversity of Debrecen Egyetem tér 1 10010 H-4032 Hungary
- Bracco Research Centre, Bracco Imaging S.p.A. Via Ribes 5 10010 Colleretto Giacosa Italy
| | - Lorenzo Tei
- Department of Sciences and Technological InnovationUniversity of Eastern Piedmont viale T. Michel 11 50121 Alessandria Italy
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Pinto SMA, Calvete MJF, Ghica ME, Soler S, Gallardo I, Pallier A, Laranjo MB, Cardoso AMS, Castro MMCA, Brett CMA, Pereira MM, Tóth É, Geraldes CFGC. A biocompatible redox MRI probe based on a Mn(ii)/Mn(iii) porphyrin. Dalton Trans 2019; 48:3249-3262. [DOI: 10.1039/c8dt04775h] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A water-soluble fluorinated MnIII/II porphyrin responds reversibly to ascorbate redox state as a turn-on MRI probe.
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31
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Filling Tricompartmental Ligands with GdIII and ZnII Ions: Some Structural and MRI Studies. CRYSTALS 2018. [DOI: 10.3390/cryst8110431] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Here we report the synthesis and characterization of a mononuclear gadolinium complex (Gd) and two heteronuclear Zn-Gd complexes (ZnGd and Zn2Gd), which contain two similar three-armed ligands that display an external compartment suitable for lanthanoid ions, and two internal compartments adequate for zinc (II) ions [H3L′ = (2-(3-formyl-2-hydroxy-5-methyl phenyl)-1,3-bis[4 -(3-formyl-2-hydroxy-5-methylphenyl)-3-azabut-3-enyl]-1,3-imidazolidine; H3L = 2-(5-bromo-2-hydroxy-3-methoxyphenyl)-1,3-bis[4-(5-bromo-2-hydroxy-3-methoxyphenyl)-3-azabut-3-enyl]-1,3-imidazolidine]. The synthetic methods used were varied, but the use of a metalloligand, [Zn2(L)AcO], as starting material was the key factor to obtain the heterotrinuclear complex Zn2Gd. The structure of the precursor dinuclear zinc complex is mostly preserved in this complex, since it is based on a compact [Zn2Ln(L)(OH)(H2O)]3+ residue, with a µ3-OH bridge between the three metal centers, which are almost forming an isosceles triangle. The asymmetric spatial arrangement of other ancillary ligands leads to chirality, what contrasts with the totally symmetric mononuclear gadolinium complex Gd. These features were confirmed by the crystal structures of both complexes. Despite the presence of the bulky compartmental Schiff base ligand, the chiral heterotrinuclear complex forms an intricate network which is predominately expanded in two dimensions, through varied H-bonds that connect not only the ancillary ligands, but also the nitrate counterions and some solvated molecules. In addition, some preliminary magnetic resonance imaging (MRI) studies have been made to determine the relaxivities of the three gadolinium complexes, with apparently improved T1 and T2 relaxivities with increasing zinc nuclearity, since both transversal and longitudinal relaxivities appear to enhance in the sequence Gd < ZnGd < Zn2Gd.
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Bermejo-Velasco D, Dou W, Heerschap A, Ossipov D, Hilborn J. Injectable hyaluronic acid hydrogels with the capacity for magnetic resonance imaging. Carbohydr Polym 2018; 197:641-648. [DOI: 10.1016/j.carbpol.2018.06.028] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 04/02/2018] [Accepted: 06/05/2018] [Indexed: 01/25/2023]
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Chen Y, Ding X, Zhang Y, Natalia A, Sun X, Wang Z, Shao H. Design and synthesis of magnetic nanoparticles for biomedical diagnostics. Quant Imaging Med Surg 2018; 8:957-970. [PMID: 30505724 DOI: 10.21037/qims.2018.10.07] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Sensitive and quantitative characterization of clinically relevant biomarkers can facilitate disease diagnosis and treatment evaluation. Magnetic nanomaterials and their biosensing strategies have recently received considerable attention. Magnetic signals experience little interference from native biological background as most biological molecules have negligible magnetic susceptibilities and thus appear transparent to external magnetic fields. Because of this unique property, magnetic sensing can be applied to both in vivo deep tissue imaging as well as ex vivo point-of-care diagnostics. To exploit this mode of magnetic detection, new advancements in both magnetic material syntheses and sensing technologies have been made. This review focuses on recent developments of magnetic nanomaterials as image contrast agents and diagnostic sensors. These developments have not only enabled precise control of magnetic nanomaterial properties but also expanded the reach of magnetic detection for biomedical diagnostics.
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Affiliation(s)
- Yuan Chen
- Department of Biomedical Engineering, Faculty of Engineering, National University of Singapore, Singapore 117599, Singapore.,Biomedical Institute for Global Health Research and Technology, National University of Singapore, Singapore 117599, Singapore
| | - Xianguang Ding
- Biomedical Institute for Global Health Research and Technology, National University of Singapore, Singapore 117599, Singapore
| | - Yan Zhang
- Department of Biomedical Engineering, Faculty of Engineering, National University of Singapore, Singapore 117599, Singapore.,Biomedical Institute for Global Health Research and Technology, National University of Singapore, Singapore 117599, Singapore
| | - Auginia Natalia
- Biomedical Institute for Global Health Research and Technology, National University of Singapore, Singapore 117599, Singapore
| | - Xuecheng Sun
- Biomedical Institute for Global Health Research and Technology, National University of Singapore, Singapore 117599, Singapore
| | - Zhigang Wang
- Biomedical Institute for Global Health Research and Technology, National University of Singapore, Singapore 117599, Singapore
| | - Huilin Shao
- Department of Biomedical Engineering, Faculty of Engineering, National University of Singapore, Singapore 117599, Singapore.,Biomedical Institute for Global Health Research and Technology, National University of Singapore, Singapore 117599, Singapore.,Institute of Molecular and Cell Biology, Agency for Science, Technology and Research, Singapore 138673, Singapore.,Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117599, Singapore
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Kwon HJ, Shin K, Soh M, Chang H, Kim J, Lee J, Ko G, Kim BH, Kim D, Hyeon T. Large-Scale Synthesis and Medical Applications of Uniform-Sized Metal Oxide Nanoparticles. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1704290. [PMID: 29573296 DOI: 10.1002/adma.201704290] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 11/19/2017] [Indexed: 05/27/2023]
Abstract
Thanks to recent advances in the synthesis of high-quality inorganic nanoparticles, more and more types of nanoparticles are becoming available for medical applications. Especially, metal oxide nanoparticles have drawn much attention due to their unique physicochemical properties and relatively inexpensive production costs. To further promote the development and clinical translation of these nanoparticle-based agents, however, it is highly desirable to reduce unwanted interbatch variations of the nanoparticles because characterizing and refining each batch are costly, take a lot of effort, and, thus, are not productive. Large-scale synthesis is a straightforward and economic pathway to minimize this issue. Here, the recent achievements in the large-scale synthesis of uniform-sized metal oxide nanoparticles and their biomedical applications are summarized, with a focus on nanoparticles of transition metal oxides and lanthanide oxides, and clarifying the underlying mechanism for the synthesis of uniform-sized nanoparticles. Surface modification steps to endow hydrophobic nanoparticles with water dispersibility and biocompatibility are also briefly described. Finally, various medical applications of metal oxide nanoparticles, such as bioimaging, drug delivery, and therapy, are presented.
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Affiliation(s)
- Hyek Jin Kwon
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul, 08826, Republic of Korea
| | - Kwangsoo Shin
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul, 08826, Republic of Korea
| | - Min Soh
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul, 08826, Republic of Korea
| | - Hogeun Chang
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jonghoon Kim
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jisoo Lee
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul, 08826, Republic of Korea
| | - Giho Ko
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul, 08826, Republic of Korea
| | - Byung Hyo Kim
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, 08826, Republic of Korea
| | - Dokyoon Kim
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, 08826, Republic of Korea
| | - Taeghwan Hyeon
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul, 08826, Republic of Korea
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Zhang Y, Zhu X, Liu L, Hong S, Zuo Z, Wang P, Su D. Synthesis and In Vitro Study of a Dual-Mode Probe Targeting Integrin α vβ 3. NANOSCALE RESEARCH LETTERS 2018; 13:281. [PMID: 30203331 PMCID: PMC6134723 DOI: 10.1186/s11671-018-2695-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 08/28/2018] [Indexed: 06/01/2023]
Abstract
Malignant tumors constitute a serious disease that threaten human life, and early diagnosis and metastasis prediction are critical to the choice of treatment plan and the timing of treatment. Integrin αvβ3, which has received broad attention as a molecular marker of the tumor neovasculature, is an important target for monitoring tumorigenesis and progression in molecular imaging research. This study reports a magnetic resonance (MR)/fluorescence dual-mode molecular probe, cRGD-Gd-Cy5.5, which targets the integrin αvβ3 receptor and uses liposomes as carrier. The obtained nanoprobe had a size of 60.08 ± 0.45 nm, with good dispersion in water, a uniform distribution of sizes, desirable stability, and high relaxivity. Its r1 relaxation rate was 10.515 mM-1 s-1, much higher than that of other Gd chelates in clinical use. The probe showed no cytotoxicity at the tested concentrations in vitro, and its ability to target A549 cells and SUNE-1-5-8F cells was preliminarily evaluated through in vitro fluorescence imaging and MR imaging. The results demonstrated that the cRGD-Gd-Cy5.5 nanoprobe had good characteristics, showing desirable stability and biosafety, a high T1 relaxation rate, and strong targeting and binding to tumors with high expression of integrin αvβ3. Therefore, cRGD-Gd-Cy5.5 is a promising agent for the visual monitoring of tumor metastasis.
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Affiliation(s)
- Yali Zhang
- Departments of Radiology, Affiliated Tumor Hospital of Guangxi Medical University, 71 Hedi Road, Nanning, 530021 Guangxi Zhuang Autonomous Region People’s Republic of China
| | - Xuna Zhu
- Departments of Radiology, Affiliated Tumor Hospital of Guangxi Medical University, 71 Hedi Road, Nanning, 530021 Guangxi Zhuang Autonomous Region People’s Republic of China
| | - Lidong Liu
- Departments of Radiology, Affiliated Tumor Hospital of Guangxi Medical University, 71 Hedi Road, Nanning, 530021 Guangxi Zhuang Autonomous Region People’s Republic of China
| | - Sen Hong
- Departments of Radiology, Affiliated Tumor Hospital of Guangxi Medical University, 71 Hedi Road, Nanning, 530021 Guangxi Zhuang Autonomous Region People’s Republic of China
| | - Zhichao Zuo
- Departments of Radiology, Affiliated Tumor Hospital of Guangxi Medical University, 71 Hedi Road, Nanning, 530021 Guangxi Zhuang Autonomous Region People’s Republic of China
| | - Peng Wang
- Departments of Radiology, Affiliated Tumor Hospital of Guangxi Medical University, 71 Hedi Road, Nanning, 530021 Guangxi Zhuang Autonomous Region People’s Republic of China
| | - Danke Su
- Departments of Radiology, Affiliated Tumor Hospital of Guangxi Medical University, 71 Hedi Road, Nanning, 530021 Guangxi Zhuang Autonomous Region People’s Republic of China
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Recent advances on stimuli-responsive macromolecular magnetic resonance imaging (MRI) contrast agents. Sci China Chem 2018. [DOI: 10.1007/s11426-018-9291-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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37
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Yang S, Zeng Q, Guo Q, Chen S, Liu H, Liu M, McMahon MT, Zhou X. Detection and differentiation of Cys, Hcy and GSH mixtures by 19F NMR probe. Talanta 2018; 184:513-519. [DOI: 10.1016/j.talanta.2018.03.039] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2017] [Revised: 03/02/2018] [Accepted: 03/14/2018] [Indexed: 01/10/2023]
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Ou Y, Wilson RE, Weber SG. Methods of Measuring Enzyme Activity Ex Vivo and In Vivo. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2018; 11:509-533. [PMID: 29505726 PMCID: PMC6147230 DOI: 10.1146/annurev-anchem-061417-125619] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Enzymes catalyze a variety of biochemical reactions in the body and, in conjunction with transporters and receptors, control virtually all physiological processes. There is great value in measuring enzyme activity ex vivo and in vivo. Spatial and temporal differences or changes in enzyme activity can be related to a variety of natural and pathological processes. Several analytical approaches have been developed to meet this need. They can be classified broadly as methods either based on artificial substrates, with the goal of creating images of diseased tissue, or based on natural substrates, with the goal of understanding natural processes. This review covers a selection of these methods, including optical, magnetic resonance, mass spectrometry, and physical sampling approaches, with a focus on creative chemistry and method development that make ex vivo and in vivo measurements of enzyme activity possible.
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Affiliation(s)
| | - Rachael E Wilson
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA;
| | - Stephen G Weber
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA;
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Zhang H, Wang T, Zheng Y, Yan C, Gu W, Ye L. Comparative toxicity and contrast enhancing assessments of Gd 2O 3@BSA and MnO 2@BSA nanoparticles for MR imaging of brain glioma. Biochem Biophys Res Commun 2018; 499:488-492. [PMID: 29580992 DOI: 10.1016/j.bbrc.2018.03.175] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 03/22/2018] [Indexed: 10/17/2022]
Abstract
The albumin-templated Gd2O3 and MnO2 nanoparticles (NPs) have been developed as a new type of magnetic resonance (MR) T1 contrast agents. However, their potential toxicity and applicability for MR imaging of brain gliomas has not been fully explored so far. In this study, we prepared Gd2O3@BSA and MnO2@BSA nanoparticles (NPs) and investigated their toxicity comprehensively and comparatively by H&E staining, blood biochemical analysis, and adverse outcome pathways testing. It is revealed that both Gd2O3@BSA and MnO2@BSA NPs are biocompatible at a rational dose level. Although the relaxivity of MnO2@BSA NPs is less than that of Gd2O3@BSA NPs, the MnO2@BSA NPs lead to a greater contrast enhancement in the brain glioma due to the controlled release of Mn ions under the acidic tumor microenvironmental conditions. These comparative toxicity and contrast enhancement data are of fundamental importance for the clinical translation of Gd2O3@BSA and MnO2@BSA NPs as MR contrast agents for brain glioma diagnosis.
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Affiliation(s)
- Hong Zhang
- School of Pharmaceutical Sciences, Capital Medical University, Beijing, 100069, PR China
| | - Tingjian Wang
- Department of Neurosurgery, Beijing Sanbo Brain Hospital, Capital Medical University, Beijing, 100093, PR China
| | - Yuanyuan Zheng
- School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, PR China
| | - Changxiang Yan
- Department of Neurosurgery, Beijing Sanbo Brain Hospital, Capital Medical University, Beijing, 100093, PR China
| | - Wei Gu
- School of Pharmaceutical Sciences, Capital Medical University, Beijing, 100069, PR China.
| | - Ling Ye
- School of Pharmaceutical Sciences, Capital Medical University, Beijing, 100069, PR China.
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Ekkelenkamp AE, Elzes MR, Engbersen JFJ, Paulusse JMJ. Responsive crosslinked polymer nanogels for imaging and therapeutics delivery. J Mater Chem B 2018; 6:210-235. [DOI: 10.1039/c7tb02239e] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Nanogels are water-soluble crosslinked polymer networks with tremendous potential in targeted imaging and controlled drug and gene delivery.
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Affiliation(s)
- Antonie E. Ekkelenkamp
- Department of Biomolecular Nanotechnology
- MESA+ Institute for Nanotechnology
- Faculty of Science and Technology
- University of Twente
- Enschede
| | - M. Rachèl Elzes
- Department of Biomolecular Nanotechnology
- MESA+ Institute for Nanotechnology
- Faculty of Science and Technology
- University of Twente
- Enschede
| | - Johan F. J. Engbersen
- Department of Controlled Drug Delivery
- MIRA Institute for Biomedical Technology and Technical Medicine
- Faculty of Science and Technology
- University of Twente
- Enschede
| | - Jos M. J. Paulusse
- Department of Biomolecular Nanotechnology
- MESA+ Institute for Nanotechnology
- Faculty of Science and Technology
- University of Twente
- Enschede
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Wang H, Dai TT, Lu BL, Li SL, Lu Q, Mukwaya V, Dou HJ. Hybrid Dextran-gadolinium Nano-suitcases as High-relaxivity MRI Contrast Agents. CHINESE JOURNAL OF POLYMER SCIENCE 2017. [DOI: 10.1007/s10118-018-2083-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Kim J, Lee N, Hyeon T. Recent development of nanoparticles for molecular imaging. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2017; 375:rsta.2017.0022. [PMID: 29038377 PMCID: PMC5647266 DOI: 10.1098/rsta.2017.0022] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 04/22/2017] [Indexed: 05/08/2023]
Abstract
Molecular imaging enables us to non-invasively visualize cellular functions and biological processes in living subjects, allowing accurate diagnosis of diseases at early stages. For successful molecular imaging, a suitable contrast agent with high sensitivity is required. To date, various nanoparticles have been developed as contrast agents for medical imaging modalities. In comparison with conventional probes, nanoparticles offer several advantages, including controllable physical properties, facile surface modification and long circulation time. In addition, they can be integrated with various combinations for multimodal imaging and therapy. In this opinion piece, we highlight recent advances and future perspectives of nanomaterials for molecular imaging.This article is part of the themed issue 'Challenges for chemistry in molecular imaging'.
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Affiliation(s)
- Jonghoon Kim
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Nohyun Lee
- School of Advanced Materials Engineering, Kookmin University, Seoul 02707, Republic of Korea
| | - Taeghwan Hyeon
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
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Choi JS, Kim S, Yoo D, Shin TH, Kim H, Gomes MD, Kim SH, Pines A, Cheon J. Distance-dependent magnetic resonance tuning as a versatile MRI sensing platform for biological targets. NATURE MATERIALS 2017; 16:537-542. [PMID: 28166216 DOI: 10.1038/nmat4846] [Citation(s) in RCA: 100] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Accepted: 12/12/2016] [Indexed: 06/06/2023]
Abstract
Nanoscale distance-dependent phenomena, such as Förster resonance energy transfer, are important interactions for use in sensing and imaging, but their versatility for bioimaging can be limited by undesirable photon interactions with the surrounding biological matrix, especially in in vivo systems. Here, we report a new type of magnetism-based nanoscale distance-dependent phenomenon that can quantitatively and reversibly sense and image intra-/intermolecular interactions of biologically important targets. We introduce distance-dependent magnetic resonance tuning (MRET), which occurs between a paramagnetic 'enhancer' and a superparamagnetic 'quencher', where the T1 magnetic resonance imaging (MRI) signal is tuned ON or OFF depending on the separation distance between the quencher and the enhancer. With MRET, we demonstrate the principle of an MRI-based ruler for nanometre-scale distance measurement and the successful detection of both molecular interactions (for example, cleavage, binding, folding and unfolding) and biological targets in in vitro and in vivo systems. MRET can serve as a novel sensing principle to augment the exploration of a wide range of biological systems.
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Affiliation(s)
- Jin-Sil Choi
- Center for Nanomedicine, Institute for Basic Science (IBS), Seoul 03722, Republic of Korea
- Yonsei-IBS Institute, Yonsei University, Seoul 03722, Republic of Korea
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea
| | - Soojin Kim
- Center for Nanomedicine, Institute for Basic Science (IBS), Seoul 03722, Republic of Korea
- Yonsei-IBS Institute, Yonsei University, Seoul 03722, Republic of Korea
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea
| | - Dongwon Yoo
- Center for Nanomedicine, Institute for Basic Science (IBS), Seoul 03722, Republic of Korea
- Yonsei-IBS Institute, Yonsei University, Seoul 03722, Republic of Korea
| | - Tae-Hyun Shin
- Center for Nanomedicine, Institute for Basic Science (IBS), Seoul 03722, Republic of Korea
- Yonsei-IBS Institute, Yonsei University, Seoul 03722, Republic of Korea
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea
| | - Hoyoung Kim
- Center for Nanomedicine, Institute for Basic Science (IBS), Seoul 03722, Republic of Korea
- Yonsei-IBS Institute, Yonsei University, Seoul 03722, Republic of Korea
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea
| | - Muller D Gomes
- Department of Chemistry, University of California, Berkeley, California 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Sun Hee Kim
- Western Seoul Center, Korea Basic Science Institute, Seoul 03760, Republic of Korea
| | - Alexander Pines
- Department of Chemistry, University of California, Berkeley, California 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Jinwoo Cheon
- Center for Nanomedicine, Institute for Basic Science (IBS), Seoul 03722, Republic of Korea
- Yonsei-IBS Institute, Yonsei University, Seoul 03722, Republic of Korea
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea
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Liu JN, Bu W, Shi J. Chemical Design and Synthesis of Functionalized Probes for Imaging and Treating Tumor Hypoxia. Chem Rev 2017; 117:6160-6224. [DOI: 10.1021/acs.chemrev.6b00525] [Citation(s) in RCA: 556] [Impact Index Per Article: 79.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Jia-nan Liu
- State
Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, P.R. China
| | - Wenbo Bu
- State
Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, P.R. China
- Shanghai
Key Laboratory of Green Chemistry and Chemical Processes, School of
Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, P.R. China
| | - Jianlin Shi
- State
Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, P.R. China
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Savla R, Minko T. Nanoparticle design considerations for molecular imaging of apoptosis: Diagnostic, prognostic, and therapeutic value. Adv Drug Deliv Rev 2017; 113:122-140. [PMID: 27374457 DOI: 10.1016/j.addr.2016.06.016] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2016] [Accepted: 06/21/2016] [Indexed: 12/13/2022]
Abstract
The present review analyzes various approaches for the design and synthesis of different nanoparticles for imaging and therapy. Nanoparticles for computed tomography (CT), magnetic resonance imaging (MRI), positron emission tomography (PET) and optical imaging are discussed. The influence of nanoparticle size, shape, surface charge, composition, surface functionalization, active targeting and other factors on imaging and therapeutic efficacy is analyzed. Cyto- and genotoxicity of nanoparticles are also discussed. Special attention in the review is paid to the imaging of apoptotic tissues and cells in different diseases.
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Affiliation(s)
- Ronak Savla
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, United States
| | - Tamara Minko
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, United States; Rutgers Cancer Institute of New Jersey, New Brunswick, NJ 08903, United States; Environmental and Occupational Health Sciences Institute, Piscataway, NJ 08854, United States.
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Zhou Z, Lu ZR. Molecular imaging of the tumor microenvironment. Adv Drug Deliv Rev 2017; 113:24-48. [PMID: 27497513 DOI: 10.1016/j.addr.2016.07.012] [Citation(s) in RCA: 144] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Accepted: 07/28/2016] [Indexed: 12/19/2022]
Abstract
The tumor microenvironment plays a critical role in tumor initiation, progression, metastasis, and resistance to therapy. It is different from normal tissue in the extracellular matrix, vascular and lymphatic networks, as well as physiologic conditions. Molecular imaging of the tumor microenvironment provides a better understanding of its function in cancer biology, and thus allowing for the design of new diagnostics and therapeutics for early cancer diagnosis and treatment. The clinical translation of cancer molecular imaging is often hampered by the high cost of commercialization of targeted imaging agents as well as the limited clinical applications and small market size of some of the agents. Because many different cancer types share similar tumor microenvironment features, the ability to target these biomarkers has the potential to provide clinically translatable molecular imaging technologies for a spectrum of cancers and broad clinical applications. There has been significant progress in targeting the tumor microenvironment for cancer molecular imaging. In this review, we summarize the principles and strategies of recent advances made in molecular imaging of the tumor microenvironment, using various imaging modalities for early detection and diagnosis of cancer.
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Yu M, Ward MB, Franke A, Ambrose SL, Whaley ZL, Bradford TM, Gorden JD, Beyers RJ, Cattley RC, Ivanović-Burmazović I, Schwartz DD, Goldsmith CR. Adding a Second Quinol to a Redox-Responsive MRI Contrast Agent Improves Its Relaxivity Response to H2O2. Inorg Chem 2017; 56:2812-2826. [DOI: 10.1021/acs.inorgchem.6b02964] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Meng Yu
- Department of Chemistry
and Biochemistry, Auburn University, Auburn, Alabama 36849, United States
| | - Meghan B. Ward
- Department of Chemistry
and Biochemistry, Auburn University, Auburn, Alabama 36849, United States
| | - Alicja Franke
- Department of Chemistry and Pharmacy, University Erlangen-Nuremberg, 91058 Erlangen, Germany
| | - Stephen L. Ambrose
- Department of Chemistry
and Biochemistry, Auburn University, Auburn, Alabama 36849, United States
| | - Zachary L. Whaley
- Department of Chemistry
and Biochemistry, Auburn University, Auburn, Alabama 36849, United States
| | - Thomas Miller Bradford
- Department of Chemistry
and Biochemistry, Auburn University, Auburn, Alabama 36849, United States
| | - John D. Gorden
- Department of Chemistry
and Biochemistry, Auburn University, Auburn, Alabama 36849, United States
| | - Ronald J. Beyers
- Auburn University Magnetic Resonance Imaging Research Center, Auburn, Alabama 36849, United States
| | - Russell C. Cattley
- Department
of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, Alabama 36849, United States
| | | | - Dean D. Schwartz
- Department of Anatomy, Physiology, and
Pharmacology, College of Veterinary Medicine, Auburn University, Auburn, Alabama 36849, United States
| | - Christian R. Goldsmith
- Department of Chemistry
and Biochemistry, Auburn University, Auburn, Alabama 36849, United States
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Krchová T, Herynek V, Gálisová A, Blahut J, Hermann P, Kotek J. Eu(III) Complex with DO3A-amino-phosphonate Ligand as a Concentration-Independent pH-Responsive Contrast Agent for Magnetic Resonance Spectroscopy (MRS). Inorg Chem 2017; 56:2078-2091. [PMID: 28170242 DOI: 10.1021/acs.inorgchem.6b02749] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A new DOTA-like ligand H5do3aNP with a 2-[amino(methylphosphonic acid)]ethyl-coordinating pendant arm was prepared, and its coordinating properties were studied by NMR spectroscopy and potentiometry. The study revealed a rare slow exchange (on the 1H and 31P NMR time scale) between protonated and unprotonated complex species with a corresponding acidity constant pKA ∼ 8.0. This unusually slow time scale associated with protonation is caused by a significant geometric change from square-antiprismatic (SA) arrangement observed for protonated complex SA-[Eu(Hdo3aNP)]- to twisted-square-antiprismatic (TSA) arrangement found for deprotonated complex TSA-[Eu(do3aNP)]2-. This behavior results in simultaneous occurrence of the signals of both species in the 31P NMR spectra at approximately -118 and +70 ppm, respectively. Such an unprecedented difference in the chemical shifts between species differing by a proton is caused by a significant movement of the principal magnetic axis and by a change of phosphorus atom position in the coordination sphere of the central Eu(III) ion (i.e., by relative movement of the phosphorus atom with respect to the principal magnetic axis). It changes the sign of the paramagnetic contribution to the 31P NMR chemical shift. The properties discovered can be employed in the measurement of pH by MRS techniques as presented by proof-of-principle experiments on phantoms.
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Affiliation(s)
- Tereza Krchová
- Department of Inorganic Chemistry, Faculty of Science, Charles University , Hlavova 2030, Prague 2 128 43, Czech Republic
| | - Vít Herynek
- Department of Radiodiagnostic and Interventional Radiology, Magnetic Resonance Unit, Institute for Clinical and Experimental Medicine , Vídeňská 1958/9, Prague 4 140 21, Czech Republic
| | - Andrea Gálisová
- Department of Radiodiagnostic and Interventional Radiology, Magnetic Resonance Unit, Institute for Clinical and Experimental Medicine , Vídeňská 1958/9, Prague 4 140 21, Czech Republic
| | - Jan Blahut
- Department of Inorganic Chemistry, Faculty of Science, Charles University , Hlavova 2030, Prague 2 128 43, Czech Republic
| | - Petr Hermann
- Department of Inorganic Chemistry, Faculty of Science, Charles University , Hlavova 2030, Prague 2 128 43, Czech Republic
| | - Jan Kotek
- Department of Inorganic Chemistry, Faculty of Science, Charles University , Hlavova 2030, Prague 2 128 43, Czech Republic
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Gale EM, Jones CM, Ramsay I, Farrar CT, Caravan P. A Janus Chelator Enables Biochemically Responsive MRI Contrast with Exceptional Dynamic Range. J Am Chem Soc 2016; 138:15861-15864. [PMID: 27960350 PMCID: PMC5328420 DOI: 10.1021/jacs.6b10898] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
We introduce a new biochemically responsive Mn-based MRI contrast agent that provides a 9-fold change in relaxivity via switching between the Mn3+ and Mn2+ oxidation states. Interchange between oxidation states is promoted by a "Janus" ligand that isomerizes between binding modes that favor Mn3+ or Mn2+. It is the only ligand that supports stable complexes of Mn3+ and Mn2+ in biological milieu. Rapid interconversion between oxidation states is mediated by peroxidase activity (oxidation) and l-cysteine (reduction). This Janus system provides a new paradigm for the design of biochemically responsive MRI contrast agents.
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Affiliation(s)
- Eric M. Gale
- The Athinoula A. Martinos Center for Biomedical Imaging, The Institute for Innovation in Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 149 Thirteenth Street, Suite 2301, Charlestown, Massachusetts 02129
| | - Chloe M. Jones
- The Athinoula A. Martinos Center for Biomedical Imaging, The Institute for Innovation in Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 149 Thirteenth Street, Suite 2301, Charlestown, Massachusetts 02129
| | - Ian Ramsay
- The Athinoula A. Martinos Center for Biomedical Imaging, The Institute for Innovation in Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 149 Thirteenth Street, Suite 2301, Charlestown, Massachusetts 02129
| | - Christian T. Farrar
- The Athinoula A. Martinos Center for Biomedical Imaging, The Institute for Innovation in Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 149 Thirteenth Street, Suite 2301, Charlestown, Massachusetts 02129
| | - Peter Caravan
- The Athinoula A. Martinos Center for Biomedical Imaging, The Institute for Innovation in Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 149 Thirteenth Street, Suite 2301, Charlestown, Massachusetts 02129
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Yu X, Mu C, Dai D, Yuan X, Zhang K, Ren L. Well-Defined Magnetic Responsive Polymers Containing Ammonium FeCl4from ROMP. MACROMOL CHEM PHYS 2016. [DOI: 10.1002/macp.201600435] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Xiaoliang Yu
- School of Materials Science and Engineering; Tianjin Key Laboratory of Composite and Functional Materials; Tianjin University; Tianjin 300072 China
| | - Chunyan Mu
- School of Materials Science and Engineering; Tianjin Key Laboratory of Composite and Functional Materials; Tianjin University; Tianjin 300072 China
| | - Dongdong Dai
- School of Materials Science and Engineering; Tianjin Key Laboratory of Composite and Functional Materials; Tianjin University; Tianjin 300072 China
| | - Xiaoyan Yuan
- School of Materials Science and Engineering; Tianjin Key Laboratory of Composite and Functional Materials; Tianjin University; Tianjin 300072 China
| | - Ke Zhang
- State Key Laboratory of Polymer Physics and Chemistry; Institute of Chemistry; The Chinese Academy of Sciences; Beijing 100190 China
| | - Lixia Ren
- School of Materials Science and Engineering; Tianjin Key Laboratory of Composite and Functional Materials; Tianjin University; Tianjin 300072 China
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