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Hoffmann E, Masthoff M, Kunz WG, Seidensticker M, Bobe S, Gerwing M, Berdel WE, Schliemann C, Faber C, Wildgruber M. Multiparametric MRI for characterization of the tumour microenvironment. Nat Rev Clin Oncol 2024; 21:428-448. [PMID: 38641651 DOI: 10.1038/s41571-024-00891-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/04/2024] [Indexed: 04/21/2024]
Abstract
Our understanding of tumour biology has evolved over the past decades and cancer is now viewed as a complex ecosystem with interactions between various cellular and non-cellular components within the tumour microenvironment (TME) at multiple scales. However, morphological imaging remains the mainstay of tumour staging and assessment of response to therapy, and the characterization of the TME with non-invasive imaging has not yet entered routine clinical practice. By combining multiple MRI sequences, each providing different but complementary information about the TME, multiparametric MRI (mpMRI) enables non-invasive assessment of molecular and cellular features within the TME, including their spatial and temporal heterogeneity. With an increasing number of advanced MRI techniques bridging the gap between preclinical and clinical applications, mpMRI could ultimately guide the selection of treatment approaches, precisely tailored to each individual patient, tumour and therapeutic modality. In this Review, we describe the evolving role of mpMRI in the non-invasive characterization of the TME, outline its applications for cancer detection, staging and assessment of response to therapy, and discuss considerations and challenges for its use in future medical applications, including personalized integrated diagnostics.
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Affiliation(s)
- Emily Hoffmann
- Clinic of Radiology, University of Münster, Münster, Germany
| | - Max Masthoff
- Clinic of Radiology, University of Münster, Münster, Germany
| | - Wolfgang G Kunz
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Max Seidensticker
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Stefanie Bobe
- Gerhard Domagk Institute of Pathology, University Hospital Münster, Münster, Germany
| | - Mirjam Gerwing
- Clinic of Radiology, University of Münster, Münster, Germany
| | | | | | - Cornelius Faber
- Clinic of Radiology, University of Münster, Münster, Germany
| | - Moritz Wildgruber
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany.
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2
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Ferda J, Frölich M, Ferdová E, Heidenreich F, Charvát R, Mírka H. Neovascularization, vascular mimicry and molecular exchange: The imaging of tumorous tissue aggressiveness based on tissue perfusion. Eur J Radiol 2023; 163:110797. [PMID: 37018901 DOI: 10.1016/j.ejrad.2023.110797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 03/19/2023] [Accepted: 03/21/2023] [Indexed: 04/05/2023]
Abstract
Angiogenesis in healthy tissue and within malignant tumors differs on many levels, which may partly be explained by vascular mimicry formation resulting in altered contrast material or different radiopharmaceuticals distributions. Failed remodulation results in changes in the molecular exchange through the capillary wall and those consequences affect the behavior of contrast agents and radiopharmaceuticals. One of the most indicative signs of malignant tissue is the increased permeability and the faster molecular exchange that occurs between the extracellular and intravascular spaces. Dynamic imaging can help to assess the changed microenvironment. The fast-distribution of molecules reflects newly developed conditions in blood-flow redistribution inside a tumor and within the affected organ during the early stages of tumor formation. Tumor development, as well as aggressiveness, can be assessed based on the change to the vascular bed development, the level of molecular exchange within the tissue, and/or indicative distribution within the organ. The study of the vascular network organization and its impact on the distribution of molecules is important to our understanding of the image pattern in several imaging methods, which in turn influences our interpretation of the findings. A hybrid imaging approach (including PET/MRI) allows the quantification of vascularization and/or its pathophysiological impressions in structural and metabolic images. It might optimize the evaluation of the pretreatment imaging, as well as help assess the effect of therapy targeting neovascularization; antiVEGF drugs and embolization-based therapies, for example.
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Affiliation(s)
- Jiří Ferda
- Department of the Imaging, University Hospital Pilsen and Charles University Medical Faculty in Pilsen, Czech Republic.
| | - Matthias Frölich
- Department of the Imaging, University Hospital Pilsen and Charles University Medical Faculty in Pilsen, Czech Republic; Klinik für Radiologie und Nuklearmedizin, Universitäts Klinikum Mannheim
| | - Eva Ferdová
- Department of the Imaging, University Hospital Pilsen and Charles University Medical Faculty in Pilsen, Czech Republic
| | - Filip Heidenreich
- Department of the Imaging, University Hospital Pilsen and Charles University Medical Faculty in Pilsen, Czech Republic
| | - Radim Charvát
- Department of the Imaging, University Hospital Pilsen and Charles University Medical Faculty in Pilsen, Czech Republic
| | - Hynek Mírka
- Department of the Imaging, University Hospital Pilsen and Charles University Medical Faculty in Pilsen, Czech Republic
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3
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Kaster M, Levasseur MD, Edwardson TGW, Caldwell MA, Hofmann D, Licciardi G, Parigi G, Luchinat C, Hilvert D, Meade TJ. Engineered Nonviral Protein Cages Modified for MR Imaging. ACS APPLIED BIO MATERIALS 2023; 6:591-602. [PMID: 36626688 PMCID: PMC9945100 DOI: 10.1021/acsabm.2c00892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 11/23/2022] [Indexed: 01/11/2023]
Abstract
Diagnostic medical imaging utilizes magnetic resonance (MR) to provide anatomical, functional, and molecular information in a single scan. Nanoparticles are often labeled with Gd(III) complexes to amplify the MR signal of contrast agents (CAs) with large payloads and high proton relaxation efficiencies (relaxivity, r1). This study examined the MR performance of two structurally unique cages, AaLS-13 and OP, labeled with Gd(III). The cages have characteristics relevant for the development of theranostic platforms, including (i) well-defined structure, symmetry, and size; (ii) the amenability to extensive engineering; (iii) the adjustable loading of therapeutically relevant cargo molecules; (iv) high physical stability; and (v) facile manufacturing by microbial fermentation. The resulting conjugates showed significantly enhanced proton relaxivity (r1 = 11-18 mM-1 s-1 at 1.4 T) compared to the Gd(III) complex alone (r1 = 4 mM-1 s-1). Serum phantom images revealed 107% and 57% contrast enhancements for Gd(III)-labeled AaLS-13 and OP cages, respectively. Moreover, proton nuclear magnetic relaxation dispersion (1H NMRD) profiles showed maximum relaxivity values of 50 mM-1 s-1. Best-fit analyses of the 1H NMRD profiles attributed the high relaxivity of the Gd(III)-labeled cages to the slow molecular tumbling of the conjugates and restricted local motion of the conjugated Gd(III) complex.
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Affiliation(s)
- Megan
A. Kaster
- Departments
of Chemistry, Molecular Biosciences, Neurobiology and Radiology, Northwestern University, 2145 N. Sheridan Road, Evanston, Illinois60208, United States
| | - Mikail D. Levasseur
- Laboratory
of Organic Chemistry, ETH Zurich, Vladimir-Prelog-Weg 1-5/10, Zürich8093, Switzerland
| | - Thomas G. W. Edwardson
- Laboratory
of Organic Chemistry, ETH Zurich, Vladimir-Prelog-Weg 1-5/10, Zürich8093, Switzerland
| | - Michael A. Caldwell
- Departments
of Chemistry, Molecular Biosciences, Neurobiology and Radiology, Northwestern University, 2145 N. Sheridan Road, Evanston, Illinois60208, United States
| | - Daniela Hofmann
- Laboratory
of Organic Chemistry, ETH Zurich, Vladimir-Prelog-Weg 1-5/10, Zürich8093, Switzerland
| | - Giulia Licciardi
- Magnetic
Resonance Center (CERM), University of Florence, via Luigi Sacconi 6, Sesto Fiorentino50019Italy
- Department
of Chemistry “Ugo Schiff”, University of Florence, via della Lastruccia 3, Sesto Fiorentino50019, Italy
- Consorzio
Interuniversitario Risonanze Magnetiche Metallo Proteine (CIRMMP), via Luigi Sacconi 6, Sesto Fiorentino50019, Italy
| | - Giacomo Parigi
- Magnetic
Resonance Center (CERM), University of Florence, via Luigi Sacconi 6, Sesto Fiorentino50019Italy
- Department
of Chemistry “Ugo Schiff”, University of Florence, via della Lastruccia 3, Sesto Fiorentino50019, Italy
- Consorzio
Interuniversitario Risonanze Magnetiche Metallo Proteine (CIRMMP), via Luigi Sacconi 6, Sesto Fiorentino50019, Italy
| | - Claudio Luchinat
- Magnetic
Resonance Center (CERM), University of Florence, via Luigi Sacconi 6, Sesto Fiorentino50019Italy
- Department
of Chemistry “Ugo Schiff”, University of Florence, via della Lastruccia 3, Sesto Fiorentino50019, Italy
- Consorzio
Interuniversitario Risonanze Magnetiche Metallo Proteine (CIRMMP), via Luigi Sacconi 6, Sesto Fiorentino50019, Italy
| | - Donald Hilvert
- Laboratory
of Organic Chemistry, ETH Zurich, Vladimir-Prelog-Weg 1-5/10, Zürich8093, Switzerland
| | - Thomas J. Meade
- Departments
of Chemistry, Molecular Biosciences, Neurobiology and Radiology, Northwestern University, 2145 N. Sheridan Road, Evanston, Illinois60208, United States
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Koyuncu B, Melek A, Yilmaz D, Tuzer M, Unlu MB. Chemotherapy response prediction with diffuser elapser network. Sci Rep 2022; 12:1628. [PMID: 35102179 PMCID: PMC8803972 DOI: 10.1038/s41598-022-05460-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 11/10/2021] [Indexed: 12/31/2022] Open
Abstract
In solid tumors, elevated fluid pressure and inadequate blood perfusion resulting from unbalanced angiogenesis are the prominent reasons for the ineffective drug delivery inside tumors. To normalize the heterogeneous and tortuous tumor vessel structure, antiangiogenic treatment is an effective approach. Additionally, the combined therapy of antiangiogenic agents and chemotherapy drugs has shown promising effects on enhanced drug delivery. However, the need to find the appropriate scheduling and dosages of the combination therapy is one of the main problems in anticancer therapy. Our study aims to generate a realistic response to the treatment schedule, making it possible for future works to use these patient-specific responses to decide on the optimal starting time and dosages of cytotoxic drug treatment. Our dataset is based on our previous in-silico model with a framework for the tumor microenvironment, consisting of a tumor layer, vasculature network, interstitial fluid pressure, and drug diffusion maps. In this regard, the chemotherapy response prediction problem is discussed in the study, putting forth a proof of concept for deep learning models to capture the tumor growth and drug response behaviors simultaneously. The proposed model utilizes multiple convolutional neural network submodels to predict future tumor microenvironment maps considering the effects of ongoing treatment. Since the model has the task of predicting future tumor microenvironment maps, we use two image quality evaluation metrics, which are structural similarity and peak signal-to-noise ratio, to evaluate model performance. We track tumor cell density values of ground truth and predicted tumor microenvironments. The model predicts tumor microenvironment maps seven days ahead with the average structural similarity score of 0.973 and the average peak signal ratio of 35.41 in the test set. It also predicts tumor cell density at the end day of 7 with the mean absolute percentage error of [Formula: see text].
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Affiliation(s)
- Batuhan Koyuncu
- Department of Computer Engineering, Bogazici University, Istanbul, 34342, Turkey
- Center for Life Sciences and Technologies, Bogazici University, Istanbul, 34342, Turkey
| | - Ahmet Melek
- Department of Management, Bogazici University, Istanbul, 34342, Turkey
- Center for Life Sciences and Technologies, Bogazici University, Istanbul, 34342, Turkey
| | - Defne Yilmaz
- Department of Physics, Bogazici University, Istanbul, 34342, Turkey
- Center for Life Sciences and Technologies, Bogazici University, Istanbul, 34342, Turkey
| | - Mert Tuzer
- Department of Physics, Bogazici University, Istanbul, 34342, Turkey
- Center for Life Sciences and Technologies, Bogazici University, Istanbul, 34342, Turkey
| | - Mehmet Burcin Unlu
- Department of Physics, Bogazici University, Istanbul, 34342, Turkey.
- Center for Life Sciences and Technologies, Bogazici University, Istanbul, 34342, Turkey.
- Hokkaido University, Global Station for Quantum Medical Science and Engineering, Global Institution for Collaborative Research and Education (GI-CoRE), Sapporo, 060-8648, Japan.
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5
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Abstract
The prostate imaging reporting and data system (PI-RADS) has revolutionized the use of magnetic resonance imaging (MRI) for the management of prostate cancer (PCa). The most recent version 2.1, PI-RADS v2.1, provides specific refinements in the performance, relaxing some recommendations which were not found to be helpful, while reinforcing and clarifying others. The interpretation of T2-weighted imaging (T2WI) in the transition zone (TZ), and the overall assessment of TZ nodules, now allows for a clearer distinction between those which are clearly benign and those which might warrant tissue sampling. Additional changes also resolve discrepancies in T2WI and diffusion-weighted imaging (DWI) of the peripheral zone (PZ). PI-RADS v2.1 is a simpler, more straightforward, and more reproducible method to better communicate between physicians regarding findings on prostate MRI.
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Affiliation(s)
- Silvina P Dutruel
- Department of Radiology, Weill Cornell Medicine/New York-Presbyterian, 525 E 68th St, Box 141, New York, NY, 10065, USA
| | - Sunil Jeph
- Department of Radiology, Weill Cornell Medicine/New York-Presbyterian, 525 E 68th St, Box 141, New York, NY, 10065, USA
| | - Daniel J A Margolis
- Department of Radiology, Weill Cornell Medicine/New York-Presbyterian, 525 E 68th St, Box 141, New York, NY, 10065, USA.
| | - Natasha Wehrli
- Department of Radiology, Weill Cornell Medicine/New York-Presbyterian, 525 E 68th St, Box 141, New York, NY, 10065, USA
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6
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Wu Y, Yan Y, Gao X, Yang L, Li Y, Guo X, Xie J, Wang K, Sun X. Gd-encapsulated carbonaceous dots for accurate characterization of tumor vessel permeability in magnetic resonance imaging. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2019; 21:102074. [DOI: 10.1016/j.nano.2019.102074] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 07/14/2019] [Accepted: 07/20/2019] [Indexed: 12/13/2022]
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7
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Wang X, Xu L, Ren Z, Fan M, Zhang J, Qi H, Xu M. A novel manganese chelated macromolecular MRI contrast agent based on O-carboxymethyl chitosan derivatives. Colloids Surf B Biointerfaces 2019; 183:110452. [PMID: 31473409 DOI: 10.1016/j.colsurfb.2019.110452] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 08/05/2019] [Accepted: 08/21/2019] [Indexed: 12/21/2022]
Abstract
Currently used Gd-based and Mn-based small molecular MRI contrast agents fail to meet the requirements for the long-term monitoring, and the potential safety risk under high administration dose or repeat dosing needs to be considered. In the present study, a biocompatible macromolecular magnetic resonance imaging (MRI) contrast agents based on O-carboxymethyl chitosan (CMCS), CMCS-(Mn-DTPA)n was designed and synthesized. The relaxivity of CMCS-(Mn-DTPA)n is approximately 3.5 and 5.5 times higher than that of Gd-DTPA and Mn-DPDP in aqueous solution, respectively. The MRI signal intensity in the kidney and liver of Sprague Dawley (SD) rats is significantly increased at a dose of 0.03 mM Mn/kg b.w. CMCS-(Mn-DTPA)n accompanied by a long effective imaging window. According to in vitro studies, CMCS-(Mn-DTPA)n exhibits good cellular and blood biocompatibility at the dose necessary for MRI imaging. Based on the results from in vivo studies, manganese (Mn) is completely excreted from SD rats within ten days after administration and does not exert a pathological effect on the liver. CMCS-(Mn-DTPA)n represents a potentially novel MRI contrast agent due to its excellent relaxivity, long effective imaging window and good biocompatibility.
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Affiliation(s)
- Xianghui Wang
- Shanghai Key Laboratory of Magnetic Resonance & Biophysics Lab, School of Physics and Materials Science, East China Normal University, Shanghai, 200062, China
| | - Li Xu
- Shanghai Key Laboratory of Magnetic Resonance & Biophysics Lab, School of Physics and Materials Science, East China Normal University, Shanghai, 200062, China; School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Zhanying Ren
- Shanghai Key Laboratory of Magnetic Resonance & Biophysics Lab, School of Physics and Materials Science, East China Normal University, Shanghai, 200062, China
| | - Mingxia Fan
- Shanghai Key Laboratory of Magnetic Resonance & Biophysics Lab, School of Physics and Materials Science, East China Normal University, Shanghai, 200062, China
| | - Jie Zhang
- Shanghai Key Laboratory of Magnetic Resonance & Biophysics Lab, School of Physics and Materials Science, East China Normal University, Shanghai, 200062, China
| | - Hongxin Qi
- Shanghai Key Laboratory of Magnetic Resonance & Biophysics Lab, School of Physics and Materials Science, East China Normal University, Shanghai, 200062, China
| | - Min Xu
- Shanghai Key Laboratory of Magnetic Resonance & Biophysics Lab, School of Physics and Materials Science, East China Normal University, Shanghai, 200062, China.
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8
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9
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Ayala-Domínguez L, Brandan ME. Quantification of tumor angiogenesis with contrast-enhanced x-ray imaging in preclinical studies: a review. Biomed Phys Eng Express 2018; 4. [DOI: 10.1088/2057-1976/aadc2d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 08/22/2018] [Indexed: 01/01/2023]
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11
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Liu Y, Wu X, Sun X, Wang D, Zhong Y, Jiang D, Wang T, Yu D, Zhang N. Design, synthesis, and evaluation of VEGFR-targeted macromolecular MRI contrast agent based on biotin-avidin-specific binding. Int J Nanomedicine 2017; 12:5039-5052. [PMID: 28765707 PMCID: PMC5523973 DOI: 10.2147/ijn.s131878] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Developing magnetic resonance imaging (MRI) contrast agents with high relaxivity and specificity was essential to increase MRI diagnostic sensitivity and accuracy. In this study, the MRI contrast agent, vascular endothelial growth factor receptor (VEGFR)-targeted poly (l-lysine) (PLL)-diethylene triamine pentacetate acid (DTPA)-gadolinium (Gd) (VEGFR-targeted PLL-DTPA-Gd, VPDG), was designed and prepared to enhance the MRI diagnosis capacity of tumor. Biotin-PLL-DTPA-Gd was synthesized first, then, VEGFR antibody was linked to biotin-PLL-DTPA-Gd using biotin-avidin reaction. In vitro cytotoxicity study results showed that VPDG had low toxicity to MCF-7 cells and HepG2 cells at experimental concentrations. In cell uptake experiments, VPDG could significantly increase the internalization rates (61.75%±5.22%) in VEGFR-positive HepG2 cells compared to PLL-DTPA-Gd (PDG) (25.16%±4.71%, P<0.05). In MRI studies in vitro, significantly higher T1 relaxivity (14.184 mM-1 s-1) was observed compared to Magnevist® (4.9 mM-1 s-1; P<0.01). Furthermore, in vivo MRI study results showed that VPDG could significantly enhance the tumor signal intensity and prolong the diagnostic time (from <1 h to 2.5 h). These results indicated that macromolecular VPDG was a promising MRI contrast agent and held great potential for molecular diagnosis of tumor.
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Affiliation(s)
- Yongjun Liu
- School of Pharmaceutical Science, Shandong University
| | - Xiaoyun Wu
- School of Pharmaceutical Science, Shandong University
| | - Xiaohe Sun
- School of Pharmaceutical Science, Shandong University
| | - Dan Wang
- School of Pharmaceutical Science, Shandong University
| | - Ying Zhong
- School of Pharmaceutical Science, Shandong University
| | - Dandan Jiang
- School of Pharmaceutical Science, Shandong University
| | - Tianqi Wang
- School of Pharmaceutical Science, Shandong University
| | - Dexin Yu
- Department of Radiology Medicine, Qilu Hospital, Jinan, People's Republic of China
| | - Na Zhang
- School of Pharmaceutical Science, Shandong University
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12
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Synthesis of dendronized polymeric chelating agents using hydrazone ligation strategy. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.04.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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13
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Kondo T, Kimura Y, Yamada H, Aoyama Y. Polymeric 1 H MRI Probes for Visualizing Tumor In Vivo. CHEM REC 2017; 17:555-568. [PMID: 28387472 DOI: 10.1002/tcr.201600144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2016] [Indexed: 11/09/2022]
Abstract
Magnetic resonance imaging (MRI) has become a prominent non- or low-invasive imaging technique, providing high-resolution, three-dimensional images as well as physiological information about tissues. Low-molecular-weight Gd-MRI contrast agents (CAs), such as Gd-DTPA (DTPA: diethylenetriaminepentaacetic acid), are commonly used in the clinical diagnosis, while macromolecular Gd-MRI CAs have several advantages over low-molecular-weight Gd-MRI CAs, which help minimize the dose of CAs and the risk of side effects. Accordingly, we developed chiral dendrimer Gd-MRI CAs, which showed high r1 values. The association constant values (Ka ) of S-isomeric dendrimer CAs to bovine serum albumin (BSA) were higher than those of R-isomeric dendrimer CAs. Besides, based on a totally new concept, we developed 13 C/15 N-enriched multiple-resonance NMR/MRI probes, which realized highly selective observation of the probes and analysis of metabolic reactions of interest. This account summarizes our recent study on developing both chiral dendrimer Gd-MRI CAs, and self-traceable 13 C/15 N-enriched phosphorylcholine polymer probes for early detection of tumors.
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Affiliation(s)
- Teruyuki Kondo
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 6158510, JAPAN
| | - Yu Kimura
- Research and Educational Unit of Leaders for Integrated Medical Systems, Center for the Promotion of Interdisciplinary Education and Research, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 6158510, JAPAN
| | - Hisatsugu Yamada
- Field of Bioresource Chemistry and Technology, Graduate School of Bioscience and Bioindustry, Tokushima University, 2-1, Minamijosanjima-cho, Tokushima, 7708506, JAPAN
| | - Yasuhiro Aoyama
- Professor emeritus, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 6158510, JAPAN
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Hindel S, Söhner A, Maaß M, Sauerwein W, Möllmann D, Baba HA, Kramer M, Lüdemann L. Validation of Blood Volume Fraction Quantification with 3D Gradient Echo Dynamic Contrast-Enhanced Magnetic Resonance Imaging in Porcine Skeletal Muscle. PLoS One 2017; 12:e0170841. [PMID: 28141810 PMCID: PMC5283669 DOI: 10.1371/journal.pone.0170841] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Accepted: 01/11/2017] [Indexed: 12/16/2022] Open
Abstract
The purpose of this study was to assess the accuracy of fractional blood volume (vb) estimates in low-perfused and low-vascularized tissue using dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI). The results of different MRI methods were compared with histology to evaluate the accuracy of these methods under clinical conditions. vb was estimated by DCE-MRI using a 3D gradient echo sequence with k-space undersampling in five muscle groups in the hind leg of 9 female pigs. Two gadolinium-based contrast agents (CA) were used: a rapidly extravasating, extracellular, gadolinium-based, low-molecular-weight contrast agent (LMCA, gadoterate meglumine) and an extracellular, gadolinium-based, albumin-binding, slowly extravasating blood pool contrast agent (BPCA, gadofosveset trisodium). LMCA data were evaluated using the extended Tofts model (ETM) and the two-compartment exchange model (2CXM). The images acquired with administration of the BPCA were used to evaluate the accuracy of vb estimation with a bolus deconvolution technique (BD) and a method we call equilibrium MRI (EqMRI). The latter calculates the ratio of the magnitude of the relaxation rate change in the tissue curve at an approximate equilibrium state to the height of the same area of the arterial input function (AIF). Immunohistochemical staining with isolectin was used to label endothelium. A light microscope was used to estimate the fractional vascular area by relating the vascular region to the total tissue region (immunohistochemical vessel staining, IHVS). In addition, the percentage fraction of vascular volume was determined by multiplying the microvascular density (MVD) with the average estimated capillary lumen, π(d2)2, where d = 8μm is the assumed capillary diameter (microvascular density estimation, MVDE). Except for ETM values, highly significant correlations were found between most of the MRI methods investigated. In the cranial thigh, for example, the vb medians (interquartile range, IQRs) of IHVS, MVDE, BD, EqMRI, 2CXM and ETM were vb = 0.7(0.3)%, 1.1(0.4)%, 1.1(0.4)%, 1.4(0.3)%, 1.2(1.8)% and 0.1(0.2)%, respectively. Variances, expressed by the difference between third and first quartiles (IQR) were highest for the 2CXM for all muscle groups. High correlations between the values in four muscle groups—medial, cranial, lateral thigh and lower leg - estimated with MRI and histology were found between BD and EqMRI, MVDE and 2CXM and IHVS and ETM. Except for the ETM, no significant differences between the vb medians of all MRI methods were revealed with the Wilcoxon rank sum test. The same holds for all muscle regions using the 2CXM and MVDE. Except for cranial thigh muscle, no significant difference was found between EqMRI and MVDE. And except for the cranial thigh and the lower leg muscle, there was also no significant difference between the vb medians of BD and MVDE. Overall, there was good vb agreement between histology and the BPCA MRI methods and the 2CXM LMCA approach with the exception of the ETM method. Although LMCA models have the advantage of providing excellent curve fits and can in principle determine more physiological parameters than BPCA methods, they yield more inaccurate results.
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Affiliation(s)
- Stefan Hindel
- Department of Radiotherapy, Medical Physics, University Hospital Essen, Essen, North Rhine-Westphalia, Germany
- * E-mail:
| | - Anika Söhner
- Department of Radiotherapy, Medical Physics, University Hospital Essen, Essen, North Rhine-Westphalia, Germany
| | - Marc Maaß
- Department of General and Visceral Surgery at Evangelical Hospital Wesel, Wesel, North Rhine-Westphalia, Germany
| | - Wolfgang Sauerwein
- Department of Radiotherapy, Medical Physics, University Hospital Essen, Essen, North Rhine-Westphalia, Germany
| | - Dorothe Möllmann
- Department of Pathology, University Hospital Essen, Essen, North Rhine-Westphalia, Germany
| | - Hideo Andreas Baba
- Department of Pathology, University Hospital Essen, Essen, North Rhine-Westphalia, Germany
| | - Martin Kramer
- Hospital of Veterinary Medicine, Department of Small Animal Surgery, Justus Liebig University Giessen, Giessen, Hesse, Germany
| | - Lutz Lüdemann
- Department of Radiotherapy, Medical Physics, University Hospital Essen, Essen, North Rhine-Westphalia, Germany
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15
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Ramamonjisoa N, Ackerstaff E. Characterization of the Tumor Microenvironment and Tumor-Stroma Interaction by Non-invasive Preclinical Imaging. Front Oncol 2017; 7:3. [PMID: 28197395 PMCID: PMC5281579 DOI: 10.3389/fonc.2017.00003] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Accepted: 01/05/2017] [Indexed: 12/13/2022] Open
Abstract
Tumors are often characterized by hypoxia, vascular abnormalities, low extracellular pH, increased interstitial fluid pressure, altered choline-phospholipid metabolism, and aerobic glycolysis (Warburg effect). The impact of these tumor characteristics has been investigated extensively in the context of tumor development, progression, and treatment response, resulting in a number of non-invasive imaging biomarkers. More recent evidence suggests that cancer cells undergo metabolic reprograming, beyond aerobic glycolysis, in the course of tumor development and progression. The resulting altered metabolic content in tumors has the ability to affect cell signaling and block cellular differentiation. Additional emerging evidence reveals that the interaction between tumor and stroma cells can alter tumor metabolism (leading to metabolic reprograming) as well as tumor growth and vascular features. This review will summarize previous and current preclinical, non-invasive, multimodal imaging efforts to characterize the tumor microenvironment, including its stromal components and understand tumor-stroma interaction in cancer development, progression, and treatment response.
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Affiliation(s)
- Nirilanto Ramamonjisoa
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Ellen Ackerstaff
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY, USA
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Cantrell CG, Vakil P, Jeong Y, Ansari SA, Carroll TJ. Diffusion-compensated tofts model suggests contrast leakage through aneurysm wall. Magn Reson Med 2017; 78:2388-2398. [PMID: 28112862 DOI: 10.1002/mrm.26607] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 12/21/2016] [Accepted: 12/21/2016] [Indexed: 11/06/2022]
Abstract
PURPOSE The purpose of this study was to investigate the diffusional transport of contrast agent and its effects on kinetic modeling of dynamic contrast enhanced (DCE) images. METHODS We performed simulations of our diffusion-compensated model and compared these results to human intracranial aneurysms (IAs). We derive an easy-to-use parameterization of diffusional effects that can provide an accurate estimate of diffusion corrected contrast agent leakage rates (ktrans ). Finally, we performed re-ansalysis of an existing data set to determine whether diffusion-corrected kinetic parameters improve the identification of high-risk IAs, thereby providing a new MRI-based imaging metric of IA stability based on wall integrity. RESULTS Probability distributions of simulated versus measured data show contrast leakage away from the aneurysm wall. Parameterization of diffusional effects on ktrans showed high correlation with long-chain methods in both surrounding tissue and near the aneurysm wall (r2 = 0.91 and r2 = 0.90, respectively). Finally, size, ktrans , and ( ktrans-kDCtrans) showed significant univariate relationships with rupture risk (P < 0.05). CONCLUSIONS We report the first evidence of diffusion-compensated permeability modeling in intracranial aneurysms and propose a parameterization of diffusional effects on ktrans . Furthermore, a comparison of measured versus simulated data suggests that contrast leakage occurs across the aneurysm wall. Magn Reson Med 78:2388-2398, 2017. © 2017 International Society for Magnetic Resonance in Medicine.
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Affiliation(s)
- Charles G Cantrell
- Northwestern University, Department of Biomedical Engineering, Evanston, Illinois, USA.,University of Chicago, Department of Radiology, Chicago, Illinois, USA
| | - Parmede Vakil
- University of Illinois, College of Medicine, Chicago, Illinois, USA.,Northwestern University, Department of Radiology, Evanston, Illinois, USA
| | - Yong Jeong
- Northwestern University, Department of Biomedical Engineering, Evanston, Illinois, USA
| | - Sameer A Ansari
- Northwestern University, Department of Radiology, Evanston, Illinois, USA.,Northwestern University, Departments of Neurology and Neurological Surgery, Evanston, Illinois, USA
| | - Timothy J Carroll
- University of Chicago, Department of Radiology, Chicago, Illinois, USA
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17
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Saadatpour Z, Rezaei A, Ebrahimnejad H, Baghaei B, Bjorklund G, Chartrand M, Sahebkar A, Morovati H, Mirzaei HR, Mirzaei H. Imaging techniques: new avenues in cancer gene and cell therapy. Cancer Gene Ther 2016; 24:1-5. [PMID: 27834357 DOI: 10.1038/cgt.2016.61] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 09/11/2016] [Accepted: 09/12/2016] [Indexed: 12/19/2022]
Abstract
Cancer is one of the world's most concerning health problems and poses many challenges in the range of approaches associated with the treatment of cancer. Current understanding of this disease brings to the fore a number of novel therapies that can be useful in the treatment of cancer. Among them, gene and cell therapies have emerged as novel and effective approaches. One of the most important challenges for cancer gene and cell therapies is correct monitoring of the modified genes and cells. In fact, visual tracking of therapeutic cells, immune cells, stem cells and genetic vectors that contain therapeutic genes and the various drugs is important in cancer therapy. Similarly, molecular imaging, such as nanosystems, fluorescence, bioluminescence, positron emission tomography, single photon-emission computed tomography and magnetic resonance imaging, have also been found to be powerful tools in monitoring cancer patients who have received therapeutic cell and gene therapies or drug therapies. In this review, we focus on these therapies and their molecular imaging techniques in treating and monitoring the progress of the therapies on various types of cancer.
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Affiliation(s)
- Z Saadatpour
- Bozorgmehr Imaging Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - A Rezaei
- Khanevadeh Hospital, Isfahan University of Medical Sciences, Isfahan, Iran
| | - H Ebrahimnejad
- Department of Oral and Maxillofacial Radiology, School of Dentistry, Kerman University of Medical Sciences, Kerman, Iran
| | - B Baghaei
- Department of Endodontics, School of Dentistry, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - G Bjorklund
- Nutritional and Environmental Medicine, Mo i Rana, Norway
| | - M Chartrand
- DigiCare Behavioral Research, Casa Grande, AZ, USA
| | - A Sahebkar
- Biotechnology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - H Morovati
- Department of Medical Parasitology and Medical Mycology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - H R Mirzaei
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - H Mirzaei
- Department of Medical Biotechnology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
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18
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Li CH, Chen FH, Schellingerhout D, Lin YS, Hong JH, Liu HL. Flow versus permeability weighting in estimating the forward volumetric transfer constant (K trans) obtained by DCE-MRI with contrast agents of differing molecular sizes. Magn Reson Imaging 2016; 36:105-111. [PMID: 27989901 DOI: 10.1016/j.mri.2016.10.027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Accepted: 10/26/2016] [Indexed: 01/02/2023]
Abstract
PURPOSE To quantify the differential plasma flow- (Fp-) and permeability surface area product per unit mass of tissue- (PS-) weighting in forward volumetric transfer constant (Ktrans) estimates by using a low molecular (Gd-DTPA) versus high molecular (Gadomer) weight contrast agent in dynamic contrast enhanced (DCE) MRI. MATERIALS AND METHODS DCE MRI was performed using a 7T animal scanner in 14 C57BL/6J mice syngeneic for TRAMP tumors, by administering Gd-DTPA (0.9kD) in eight mice and Gadomer (35kD) in the remainder. The acquisition time was 10min with a sampling rate of one image every 2s. Pharmacokinetic modeling was performed to obtain Ktrans by using Extended Tofts model (ETM). In addition, the adiabatic approximation to the tissue homogeneity (AATH) model was employed to obtain the relative contributions of Fp and PS. RESULTS The Ktrans values derived from DCE-MRI with Gd-DTPA showed significant correlations with both PS (r2=0.64, p=0.009) and Fp (r2=0.57, p=0.016), whereas those with Gadomer were found only significantly correlated with PS (r2=0.96, p=0.0003) but not with Fp (r2=0.34, p=0.111). A voxel-based analysis showed that Ktrans approximated PS (<30% difference) in 78.3% of perfused tumor volume for Gadomer, but only 37.3% for Gd-DTPA. CONCLUSIONS The differential contributions of Fp and PS in estimating Ktrans values vary with the molecular weight of the contrast agent used. The macromolecular contrast agent resulted in Ktrans values that were much less dependent on flow. These findings support the use of macromolecular contrast agents for estimating tumor vessel permeability with DCE-MRI.
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Affiliation(s)
- Cheng-He Li
- Department of Medical Imaging and Radiological Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Fang-Hsin Chen
- Department of Medical Imaging and Radiological Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Radiation Biology Research Center, Institute for Radiological Research, Chang Gung University, Chang Gung Memorial Hospital, Taoyuan, Taiwan; Department of Radiation Oncology, Chang Gung Memorial Hospital at Linko, Taoyuan, Taiwan
| | - Dawid Schellingerhout
- Departments of Diagnostic Radiology and Cancer Systems Imaging, The University of Texas M.D. Anderson Cancer Center, Houston, TX, USA
| | - Yu-Shi Lin
- Department of Medical Imaging and Radiological Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Ji-Hong Hong
- Department of Medical Imaging and Radiological Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Radiation Biology Research Center, Institute for Radiological Research, Chang Gung University, Chang Gung Memorial Hospital, Taoyuan, Taiwan; Department of Radiation Oncology, Chang Gung Memorial Hospital at Linko, Taoyuan, Taiwan
| | - Ho-Ling Liu
- Department of Imaging Physics, The University of Texas M.D. Anderson Cancer Center, Houston, TX, USA.
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Gong M, Yang H, Zhang S, Yang Y, Zhang D, Li Z, Zou L. Targeting T1 and T2 dual modality enhanced magnetic resonance imaging of tumor vascular endothelial cells based on peptides-conjugated manganese ferrite nanomicelles. Int J Nanomedicine 2016; 11:4051-63. [PMID: 27578974 PMCID: PMC4998025 DOI: 10.2147/ijn.s104686] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Tumor angiogenesis plays very important roles for tumorigenesis, tumor development, metastasis, and prognosis. Targeting T1/T2 dual modality magnetic resonance (MR) imaging of the tumor vascular endothelial cells (TVECs) with MR molecular probes can greatly improve diagnostic sensitivity and specificity, as well as helping to make an early diagnosis of tumor at the preclinical stage. In this study, a new T1 and T2 dual modality nanoprobe was successfully fabricated. The prepared nanoprobe comprise peptides CL 1555, poly(ε-caprolactone)-block-poly(ethylene glycol) amphiphilic copolymer shell, and dozens of manganese ferrite (MnFe2O4) nanoparticle core. The results showed that the hydrophobic MnFe2O4 nanoparticles were of uniform spheroidal appearance and narrow size distribution. Due to the self-assembled nanomicelles structure, the prepared probes were of high relaxivity of 281.7 mM−1 s−1, which was much higher than that of MnFe2O4 nanoparticles (67.5 mM 1 s−1). After being grafted with the targeted CD105 peptide CL 1555, the nanomicelles can combine TVECs specifically and make the labeled TVECs dark in T2-weighted MR imaging. With the passage on, the Mn2+ ions were released from MnFe2O4 and the size decreased gradually, making the signal intensity of the second and third passage of labeled TVECs increased in T1-weighted MR imaging. Our results demonstrate that CL-poly(ethylene glycol)-MnFe2O4 can conjugate TVECs and induce dark and bright contrast in MR imaging, and act as a novel molecular probe for T1- and T2-enhanced MR imaging of tumor angiogenesis.
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Affiliation(s)
- Mingfu Gong
- Department of Radiology, Xinqiao Hospital, Third Military Medical University, Chongqing, People's Republic of China
| | - Hua Yang
- Department of Radiology, Xinqiao Hospital, Third Military Medical University, Chongqing, People's Republic of China; Department of Radiology, Chongqing Traditional Chinese Medicine Hospital, Chongqing, People's Republic of China
| | - Song Zhang
- Department of Radiology, Xinqiao Hospital, Third Military Medical University, Chongqing, People's Republic of China
| | - Yan Yang
- Department of Radiology, Xinqiao Hospital, Third Military Medical University, Chongqing, People's Republic of China
| | - Dong Zhang
- Department of Radiology, Xinqiao Hospital, Third Military Medical University, Chongqing, People's Republic of China
| | - Zhaohui Li
- Geosciences Department, University of Wisconsin-Parkside, Kenosha, WI, USA
| | - Liguang Zou
- Department of Radiology, Xinqiao Hospital, Third Military Medical University, Chongqing, People's Republic of China
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20
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Turco S, Wijkstra H, Mischi M. Mathematical Models of Contrast Transport Kinetics for Cancer Diagnostic Imaging: A Review. IEEE Rev Biomed Eng 2016; 9:121-47. [PMID: 27337725 DOI: 10.1109/rbme.2016.2583541] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Angiogenesis plays a fundamental role in cancer growth and the formation of metastasis. Novel cancer therapies aimed at inhibiting angiogenic processes and/or disrupting angiogenic tumor vasculature are currently being developed and clinically tested. The need for earlier and improved cancer diagnosis, and for early evaluation and monitoring of therapeutic response to angiogenic treatment, have led to the development of several imaging methods for in vivo noninvasive assessment of angiogenesis. The combination of dynamic contrast-enhanced imaging with mathematical modeling of the contrast agent kinetics enables quantitative assessment of the structural and functional changes in the microvasculature that are associated with tumor angiogenesis. In this paper, we review quantitative imaging of angiogenesis with dynamic contrast-enhanced magnetic resonance imaging, computed tomography, and ultrasound.
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21
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Banerjee S, Ghose M, Paul SS, Patra S, Mukherjea KK. A gadolinium(III) complex: synthesis, structure, photophysical profile and its role in the degradation of nitroaromatics. J COORD CHEM 2016. [DOI: 10.1080/00958972.2015.1125475] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
| | - Madhulika Ghose
- Department of Chemistry, Jadavpur University, Kolkata, India
| | | | - Swarup Patra
- Department of Chemistry, Jadavpur University, Kolkata, India
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22
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Lohrke J, Frenzel T, Endrikat J, Alves FC, Grist TM, Law M, Lee JM, Leiner T, Li KC, Nikolaou K, Prince MR, Schild HH, Weinreb JC, Yoshikawa K, Pietsch H. 25 Years of Contrast-Enhanced MRI: Developments, Current Challenges and Future Perspectives. Adv Ther 2016; 33:1-28. [PMID: 26809251 PMCID: PMC4735235 DOI: 10.1007/s12325-015-0275-4] [Citation(s) in RCA: 225] [Impact Index Per Article: 28.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Indexed: 12/17/2022]
Abstract
UNLABELLED In 1988, the first contrast agent specifically designed for magnetic resonance imaging (MRI), gadopentetate dimeglumine (Magnevist(®)), became available for clinical use. Since then, a plethora of studies have investigated the potential of MRI contrast agents for diagnostic imaging across the body, including the central nervous system, heart and circulation, breast, lungs, the gastrointestinal, genitourinary, musculoskeletal and lymphatic systems, and even the skin. Today, after 25 years of contrast-enhanced (CE-) MRI in clinical practice, the utility of this diagnostic imaging modality has expanded beyond initial expectations to become an essential tool for disease diagnosis and management worldwide. CE-MRI continues to evolve, with new techniques, advanced technologies, and novel contrast agents bringing exciting opportunities for more sensitive, targeted imaging and improved patient management, along with associated clinical challenges. This review aims to provide an overview on the history of MRI and contrast media development, to highlight certain key advances in the clinical development of CE-MRI, to outline current technical trends and clinical challenges, and to suggest some important future perspectives. FUNDING Bayer HealthCare.
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Affiliation(s)
- Jessica Lohrke
- MR and CT Contrast Media Research, Bayer HealthCare, Berlin, Germany
| | - Thomas Frenzel
- MR and CT Contrast Media Research, Bayer HealthCare, Berlin, Germany
| | - Jan Endrikat
- Global Medical Affairs Radiology, Bayer HealthCare, Berlin, Germany
- Saarland University Hospital, Homburg, Germany
| | | | - Thomas M Grist
- Radiology, Medical Physics and Biomedical Engineering, University of Wisconsin, Madison, WI, USA
| | - Meng Law
- Radiology and Neurological Surgery, University of South California, Keck School of Medicine, USC University Hospital, Los Angeles, CA, USA
| | - Jeong Min Lee
- College of Medicine, Seoul National University Hospital, Seoul, South Korea
| | - Tim Leiner
- Radiology, Utrecht University Medical Center, Utrecht, The Netherlands
| | - Kun-Cheng Li
- Radiology, Xuan Wu Hospital, Capital Medical University, Beijing, People's Republic of China
| | - Konstantin Nikolaou
- Radiology, Ludwig-Maximilians University, University Hospitals, Munich, Germany
| | - Martin R Prince
- Radiology, Weill Cornell Medical College, New York, NY, USA
- Columbia College of Physicians and Surgeons, New York, NY, USA
| | | | | | - Kohki Yoshikawa
- Graduate Division of Medical Health Sciences, Graduate School of Komazawa University, Tokyo, Japan
| | - Hubertus Pietsch
- MR and CT Contrast Media Research, Bayer HealthCare, Berlin, Germany.
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23
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García-Figueiras R, Padhani AR, Beer AJ, Baleato-González S, Vilanova JC, Luna A, Oleaga L, Gómez-Caamaño A, Koh DM. Imaging of Tumor Angiogenesis for Radiologists—Part 1: Biological and Technical Basis. Curr Probl Diagn Radiol 2015; 44:407-24. [DOI: 10.1067/j.cpradiol.2015.02.010] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2014] [Revised: 02/24/2015] [Accepted: 02/28/2015] [Indexed: 01/09/2023]
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24
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25
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Chan M, Lux J, Nishimura T, Akiyoshi K, Almutairi A. Long-Lasting and Efficient Tumor Imaging Using a High Relaxivity Polysaccharide Nanogel Magnetic Resonance Imaging Contrast Agent. Biomacromolecules 2015; 16:2964-71. [DOI: 10.1021/acs.biomac.5b00867] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
| | | | - Tomoki Nishimura
- Department
of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
- Japan
Science and Technology Agency (JST), The Exploratory Research for
Advanced Technology (ERATO), Bionanotransporter Project, Katsura Int’tech Center, Katsura, Nishikyo-ku, Kyoto 615-8530, Japan
| | - Kazunari Akiyoshi
- Department
of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
- Japan
Science and Technology Agency (JST), The Exploratory Research for
Advanced Technology (ERATO), Bionanotransporter Project, Katsura Int’tech Center, Katsura, Nishikyo-ku, Kyoto 615-8530, Japan
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26
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Park HS, Han JK, Lee JM, Kim YI, Woo S, Yoon JH, Choi JY, Choi BI. Dynamic Contrast-Enhanced MRI Using a Macromolecular MR Contrast Agent (P792): Evaluation of Antivascular Drug Effect in a Rabbit VX2 Liver Tumor Model. Korean J Radiol 2015; 16:1029-37. [PMID: 26357497 PMCID: PMC4559774 DOI: 10.3348/kjr.2015.16.5.1029] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Accepted: 05/18/2015] [Indexed: 11/20/2022] Open
Abstract
Objective To evaluate the utility of dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) using macromolecular contrast agent (P792) for assessment of vascular disrupting drug effect in rabbit VX2 liver tumor models. Materials and Methods This study was approved by our Institutional Animal Care and Use Committee. DCE-MRI was performed with 3-T scanner in 13 VX2 liver tumor-bearing rabbits, before, 4 hours after, and 24 hours after administration of vascular disrupting agent (VDA), using gadomelitol (P792, n = 7) or low molecular weight contrast agent (gadoterate meglumine [Gd-DOTA], n = 6). P792 was injected at a of dose 0.05 mmol/kg, while that of Gd-DOTA was 0.2 mmol/kg. DCE-MRI parameters including volume transfer coefficient (Ktrans) and initial area under the gadolinium concentration-time curve until 60 seconds (iAUC) of tumors were compared between the 2 groups at each time point. DCE-MRI parameters were correlated with tumor histopathology. Reproducibility in measurement of DCE-MRI parameters and image quality of source MR were compared between groups. Results P792 group showed a more prominent decrease in Ktrans and iAUC at 4 hours and 24 hours, as compared to the Gd-DOTA group. Changes in DCE-MRI parameters showed a weak correlation with histologic parameters (necrotic fraction and microvessel density) in both groups. Reproducibility of DCE-MRI parameters and overall image quality was not significantly better in the P792 group, as compared to the Gd-DOTA group. Conclusion Dynamic contrast-enhanced magnetic resonance imaging using a macromolecular contrast agent shows changes of hepatic perfusion more clearly after administration of the VDA. Gadolinium was required at smaller doses than a low molecular contrast agent.
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Affiliation(s)
- Hee Sun Park
- Department of Radiology, Konkuk University School of Medicine, Seoul 05030, Korea
| | - Joon Koo Han
- Department of Radiology and Institute of Radiation Medicine, Seoul National University Hospital, Seoul 03080, Korea
| | - Jeong Min Lee
- Department of Radiology and Institute of Radiation Medicine, Seoul National University Hospital, Seoul 03080, Korea
| | - Young Il Kim
- Department of Radiology, Sheikh Khalifa Specialty Hospital, Ras Al Khaimah, United Arab Emirates
| | - Sungmin Woo
- Department of Radiology and Institute of Radiation Medicine, Seoul National University Hospital, Seoul 03080, Korea
| | - Jung Hwan Yoon
- Department of Internal Medicine, Seoul National University Hospital, Seoul 03080, Korea
| | - Jin-Young Choi
- Department of Radiology, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Byung Ihn Choi
- Department of Radiology and Institute of Radiation Medicine, Seoul National University Hospital, Seoul 03080, Korea
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27
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Baker JHE, McPhee KC, Moosvi F, Saatchi K, Häfeli UO, Minchinton AI, Reinsberg SA. Multi-modal magnetic resonance imaging and histology of vascular function in xenografts using macromolecular contrast agent hyperbranched polyglycerol (HPG-GdF). CONTRAST MEDIA & MOLECULAR IMAGING 2015; 11:77-88. [PMID: 26268906 DOI: 10.1002/cmmi.1661] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Revised: 06/17/2015] [Accepted: 07/07/2015] [Indexed: 01/17/2023]
Abstract
Macromolecular gadolinium (Gd)-based contrast agents are in development as blood pool markers for MRI. HPG-GdF is a 583 kDa hyperbranched polyglycerol doubly tagged with Gd and Alexa 647 nm dye, making it both MR and histologically visible. In this study we examined the location of HPG-GdF in whole-tumor xenograft sections matched to in vivo DCE-MR images of both HPG-GdF and Gadovist. Despite its large size, we have shown that HPG-GdF extravasates from some tumor vessels and accumulates over time, but does not distribute beyond a few cell diameters from vessels. Fractional plasma volume (fPV) and apparent permeability-surface area product (aPS) parameters were derived from the MR concentration-time curves of HPG-GdF. Non-viable necrotic tumor tissue was excluded from the analysis by applying a novel bolus arrival time (BAT) algorithm to all voxels. aPS derived from HPG-GdF was the only MR parameter to identify a difference in vascular function between HCT116 and HT29 colorectal tumors. This study is the first to relate low and high molecular weight contrast agents with matched whole-tumor histological sections. These detailed comparisons identified tumor regions that appear distinct from each other using the HPG-GdF biomarkers related to perfusion and vessel leakiness, while Gadovist-imaged parameter measures in the same regions were unable to detect variation in vascular function. We have established HPG-GdF as a biocompatible multi-modal high molecular weight contrast agent with application for examining vascular function in both MR and histological modalities.
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Affiliation(s)
- Jennifer H E Baker
- Department of Physics and Astronomy, University of British Columbia, Vancouver, Canada
| | - Kelly C McPhee
- Department of Physics and Astronomy, University of British Columbia, Vancouver, Canada
| | - Firas Moosvi
- Department of Physics and Astronomy, University of British Columbia, Vancouver, Canada
| | - Katayoun Saatchi
- Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, Canada
| | - Urs O Häfeli
- Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, Canada
| | - Andrew I Minchinton
- Radiation Biology Unit, British Columbia Cancer Research Centre, Vancouver, Canada
| | - Stefan A Reinsberg
- Department of Physics and Astronomy, University of British Columbia, Vancouver, Canada
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Ye Z, Zhou Z, Ayat N, Wu X, Jin E, Shi X, Lu ZR. A neutral polydisulfide containing Gd(III) DOTA monoamide as a redox-sensitive biodegradable macromolecular MRI contrast agent. CONTRAST MEDIA & MOLECULAR IMAGING 2015. [PMID: 26218648 DOI: 10.1002/cmmi.1655] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
This work aims to develop safe and effective gadolinium (III)-based biodegradable macromolecular MRI contrast agents for blood pool and cancer imaging. A neutral polydisulfide containing macrocyclic Gd-DOTA monoamide (GOLS) was synthesized and characterized. In addition to studying the in vitro degradation of GOLS, its kinetic stability was also investigated in an in vivo model. The efficacy of GOLS for contrast-enhanced MRI was examined with female BALB/c mice bearing 4T1 breast cancer xenografts. The pharmacokinetics, biodistribution, and metabolism of GOLS were also determined in mice. GOLS has an apparent molecular weight of 23.0 kDa with T1 relaxivities of 7.20 mM(-1) s(-1) per Gd at 1.5 T, and 6.62 mM(-1) s(-1) at 7.0 T. GOLS had high kinetic inertness against transmetallation with Zn(2+) ions, and its polymer backbone was readily cleaved by L-cysteine. The agent showed improved efficacy for blood pool and tumor MR imaging. The structural effect on biodistribution and in vivo chelation stability was assessed by comparing GOLS with Gd(HP-DO3A), a negatively charged polydisulfide containing Gd-DOTA monoamide GODC, and a polydisulfide containing Gd-DTPA-bisamide (GDCC). GOLS showed high in vivo chelation stability and minimal tissue deposition of gadolinium. The biodegradable macromolecular contrast agent GOLS is a promising polymeric contrast agent for clinical MR cardiovascular imaging and cancer imaging.
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Affiliation(s)
- Zhen Ye
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA.,Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, UT, USA
| | - Zhuxian Zhou
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA
| | - Nadia Ayat
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA
| | - Xueming Wu
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA
| | - Erlei Jin
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA
| | - Xiaoyue Shi
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA
| | - Zheng-Rong Lu
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA
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Singh U, Dar MM, Anayutullah S, Alam H, Manzoor N, Al-Thabaiti SA, Hashmi AA. Design and synthesis of Co(II) and Cu(II) complexes of a dendrimeric chelate: promising anticandidal potential of chelotherapeutic agents. J COORD CHEM 2015. [DOI: 10.1080/00958972.2015.1040007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Urvashi Singh
- Department of Chemistry, Jamia Millia Islamia University, New Delhi, India
| | | | - Syed Anayutullah
- Department of Chemistry, Jamia Millia Islamia University, New Delhi, India
| | - Hammad Alam
- Department of Biosciences, Jamia Millia Islamia University, New Delhi, India
| | - Nikhat Manzoor
- Department of Biosciences, Jamia Millia Islamia University, New Delhi, India
| | | | - Athar Adil Hashmi
- Department of Chemistry, Jamia Millia Islamia University, New Delhi, India
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MRI kinetics with volumetric analysis in correlation with hormonal receptor subtypes and histologic grade of invasive breast cancers. AJR Am J Roentgenol 2015; 204:W348-56. [PMID: 25714321 DOI: 10.2214/ajr.13.11486] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
OBJECTIVE. The aim of this study was to assess whether computer-assisted detection-processed MRI kinetics data can provide further information on the biologic aggressiveness of breast tumors. MATERIALS AND METHODS. We identified 194 newly diagnosed invasive breast cancers presenting as masses on contrast-enhanced MRI by a HIPAA-compliant pathology database search. Computer-assisted detection-derived data for the mean and median peak signal intensity percentage increase, most suspicious kinetic curve patterns, and volumetric analysis of the different kinetic patterns by mean percentage tumor volume were compared against the different hormonal receptor (estrogen-receptor [ER], progesterone-receptor [PR], ERRB2 (HER2/neu), and triple-receptor expressivity) and histologic grade subgroups, which were used as indicators of tumor aggressiveness. RESULTS. The means and medians of the peak signal intensity percentage increase were higher in ER-negative, PR-negative, and triple-negative (all p ≤ 0.001), and grade 3 tumors (p = 0.011). Volumetric analysis showed higher mean percentage volume of rapid initial enhancement in biologically more aggressive ER-negative, PR-negative, and triple-negative tumors compared with ER-positive (64% vs 53.6%, p = 0.013), PR-positive (65.4% vs 52.5%, p = 0.001), and nontriple-negative tumors (65.3% vs 54.6%, p = 0.028), respectively. A higher mean percentage volume of rapid washout component was seen in ERRB2-positive tumors compared with ERRB2-negative tumors (27.5% vs 17.9%, p = 0.020). CONCLUSION. Peak signal intensity percentage increase and volume analysis of the different kinetic patterns of breast tumors showed correlation with hormonal receptor and histologic grade indicators of cancer aggressiveness. Computer-assisted detection-derived MRI kinetics data have the potential to further characterize the aggressiveness of an invasive cancer.
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Anti-angiogenic Effects of Bumetanide Revealed by DCE-MRI with a Biodegradable Macromolecular Contrast Agent in a Colon Cancer Model. Pharm Res 2015; 32:3029-43. [PMID: 25840948 DOI: 10.1007/s11095-015-1684-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Accepted: 03/19/2015] [Indexed: 10/23/2022]
Abstract
PURPOSE To assess the antiangiogenic effect of bumetanide with dynamic contrast enhanced (DCE)-MRI and a biodegradable macromolecular MRI contrast agent. METHODS A new polydisulfide containing macrocyclic gadolinium (Gd(III)) chelates, poly([(Gd-DOTA)-DETA]-co-DTBP) (GODP), was synthesized as a safe biodegradable macromolecular MRI contrast agent for DCE-MRI. Nude mice bearing flank HT29 colon cancer xenografts were then treated daily with either bumetanide or saline for a total of 3 weeks. DCE-MRI was performed before and after the treatment weekly. The DCE-MRI data were analyzed using the adiabiatic approximation to the tissue homogeneity (AATH) model to assess the change of tumor vascularity in response to the treatment. Immunohistochemistry (IHC) and western blot were performed to study tumor angiogenic biomarkers and hypoxia. RESULTS DCE-MRI with GODP revealed that bumetanide reduced vascular permeability and plasma volume fraction by a significantly greater extent than the saline control therapy after 3 weeks of therapy. These changes were verified by the significant decline of CD31 and VEGF expression in the bumetanide treatment group. Despite a significant regression in vascularity, the tumors remained highly proliferative. Overexpression of the transcription factor HIF-1α in response to elevated hypoxia is thought to be the driving force behind the uninterrupted tumor expansion. CONCLUSION This study demonstrated the effectiveness of DCE-MRI with GODP in detecting vascular changes following the administration of bumetanide. Bumetanide has the potential to curtail growth of the tumor vasculature and can be employed in future therapeutic strategies.
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Richardson OC, Bane O, Scott MLJ, Tanner SF, Waterton JC, Sourbron SP, Carroll TJ, Buckley DL. Gadofosveset-based biomarker of tissue albumin concentration: Technical validation in vitro and feasibility in vivo. Magn Reson Med 2015; 73:244-53. [PMID: 24515975 PMCID: PMC4296221 DOI: 10.1002/mrm.25128] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Accepted: 12/19/2013] [Indexed: 11/07/2022]
Abstract
PURPOSE There is currently no adequate method of mapping physiologic and pathophysiologic tissue albumin concentrations in human subjects. The objective of this study was to devise and evaluate a biomarker of regional albumin concentration using gadofosveset-enhanced MRI. THEORY AND METHODS A binding and relaxation model was devised and evaluated in vitro in solutions of albumin at 3.0 Tesla (T) and 4.7T. The method was evaluated in the heart in seven volunteers at 3.0T. RESULTS MRI-derived estimates of albumin concentration were in good agreement with true values over the range 0.1-1.0 mM (Pearson correlation coefficients of 0.85 and 0.88 for 3.0T and 4.7T, respectively). The mean calculated albumin concentration in the myocardium for the volunteers was 0.02 mM (range, 0.01-0.03 mM). CONCLUSION Accurate estimates of albumin concentration in vitro suggest this may be a viable noninvasive alternative to existing techniques. In the myocardium the MRI-derived estimates of albumin concentration indicate the practical feasibility of the technique but were below expected values. Gadofosveset-enhanced MR relaxometry has potential in providing biomarkers of regional albumin concentration; further evaluation is required before it can be used reliably in vivo.
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Affiliation(s)
- Owen C Richardson
- Division of Medical Physics, University of LeedsLeeds, United Kingdom
| | - Octavia Bane
- Departments of Biomedical Engineering and Radiology, Northwestern UniversityChicago, Illinois, USA
| | - Marietta LJ Scott
- Personalized Healthcare and Biomarkers, AstraZenecaMacclesfield, Cheshire, United Kingdom
| | - Steven F Tanner
- Department of Medical Physics and Engineering, Leeds Teaching Hospitals NHS TrustLeeds, United Kingdom.
| | - John C Waterton
- Personalized Healthcare and Biomarkers, AstraZenecaMacclesfield, Cheshire, United Kingdom
| | - Steven P Sourbron
- Division of Medical Physics, University of LeedsLeeds, United Kingdom
| | - Timothy J Carroll
- Departments of Biomedical Engineering and Radiology, Northwestern UniversityChicago, Illinois, USA
| | - David L Buckley
- Division of Medical Physics, University of LeedsLeeds, United Kingdom
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Martens MH, Subhani S, Heijnen LA, Lambregts DMJ, Buijsen J, Maas M, Riedl RG, Jeukens CRLPN, Beets GL, Kluza E, Beets-Tan RGH. Can perfusion MRI predict response to preoperative treatment in rectal cancer? Radiother Oncol 2014; 114:218-23. [PMID: 25497874 DOI: 10.1016/j.radonc.2014.11.044] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Revised: 11/24/2014] [Accepted: 11/24/2014] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND PURPOSE Dynamic contrast-enhanced MRI (DCE-MRI) provides information on perfusion and could identify good prognostic tumors. Aim of this study was to evaluate whether DCE-MRI using a novel blood pool contrast-agent can accurately predict the response to neoadjuvant chemoradiotherapy in locally advanced rectal cancer. MATERIALS AND METHODS Thirty patients underwent DCE-MRI before and 7-10weeks after chemoradiotherapy. Regions of interest were drawn on DCE-MRI with T2W-images as reference. DCE-MRI-based kinetic parameters (initial slope, initial peak, late slope, and AUC at 60, 90, and 120s) determined pre- and post-CRT and their Δ were compared between good (TRG1-2) and poor (TRG3-5) responders. Optimal thresholds were determined and sensitivities, specificities, positive predictive values (PPV), and negative predictive values (NPV) were calculated. RESULTS Pre-therapy, the late slope was able to discriminate between good and poor responders (-0.05×10(-3) vs. 0.62×10(-3), p<0.001) with an AUC of 0.90, sensitivity 92%, specificity 82%, PPV 80%, and NPV 93%. Other pre-CRT parameters showed no significant differences, nor any post-CRT parameters or their Δ. CONCLUSIONS The kinetic parameter 'late slope' derived from DCE-MRI could potentially be helpful to predict before the onset of neoadjuvant chemoradiotherapy which tumors are likely going to respond. This could allow for personalized treatment-options in rectal cancer patients.
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Affiliation(s)
- Milou H Martens
- Department of Radiology, Maastricht University Medical Center, The Netherlands; Department of Surgery, Maastricht University Medical Center, The Netherlands; GROW - School for Oncology and Developmental Biology, Maastricht University Medical Center, The Netherlands.
| | - Samina Subhani
- Department of Radiology, Maastricht University Medical Center, The Netherlands
| | - Luc A Heijnen
- Department of Radiology, Maastricht University Medical Center, The Netherlands; Department of Surgery, Maastricht University Medical Center, The Netherlands; GROW - School for Oncology and Developmental Biology, Maastricht University Medical Center, The Netherlands
| | | | - Jeroen Buijsen
- GROW - School for Oncology and Developmental Biology, Maastricht University Medical Center, The Netherlands; Department of Radiation Oncology, Maastro Clinic, The Netherlands
| | - Monique Maas
- Department of Radiology, Maastricht University Medical Center, The Netherlands
| | - Robert G Riedl
- Department of Pathology, Maastricht University Medical Center, The Netherlands
| | | | - Geerard L Beets
- Department of Surgery, Maastricht University Medical Center, The Netherlands
| | - Ewelina Kluza
- Department of Radiology, Maastricht University Medical Center, The Netherlands
| | - Regina G H Beets-Tan
- Department of Radiology, Maastricht University Medical Center, The Netherlands; GROW - School for Oncology and Developmental Biology, Maastricht University Medical Center, The Netherlands
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Xiao Y, Xue R, You T, Li X, Pei F, Wang X, Lei H. Gadolinium-1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid conjugate of arabinogalactan as a potential liver-targeting magnetic resonance imaging contrast agent. Carbohydr Res 2014; 395:9-14. [DOI: 10.1016/j.carres.2014.05.022] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2014] [Revised: 05/28/2014] [Accepted: 05/29/2014] [Indexed: 10/25/2022]
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Zhang X, Pagel MD, Baker AF, Gillies RJ. Reproducibility of magnetic resonance perfusion imaging. PLoS One 2014; 9:e89797. [PMID: 24587040 PMCID: PMC3934952 DOI: 10.1371/journal.pone.0089797] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Accepted: 01/24/2014] [Indexed: 11/18/2022] Open
Abstract
Dynamic MR biomarkers (T2*-weighted or susceptibility-based and T1-weighted or relaxivity-enhanced) have been applied to assess tumor perfusion and its response to therapies. A significant challenge in the development of reliable biomarkers is a rigorous assessment and optimization of reproducibility. The purpose of this study was to determine the measurement reproducibility of T1-weighted dynamic contrast-enhanced (DCE)-MRI and T2*-weighted dynamic susceptibility contrast (DSC)-MRI with two contrast agents (CA) of different molecular weight (MW): gadopentetate (Gd-DTPA, 0.5 kDa) and Gadomelitol (P792, 6.5 kDa). Each contrast agent was tested with eight mice that had subcutaneous MDA-MB-231 breast xenograft tumors. Each mouse was imaged with a combined DSC-DCE protocol three times within one week to achieve measures of reproducibility. DSC-MRI results were evaluated with a contrast to noise ratio (CNR) efficiency threshold. There was a clear signal drop (>95% probability threshold) in the DSC of normal tissue, while signal changes were minimal or non-existent (<95% probability threshold) in tumors. Mean within-subject coefficient of variation (wCV) of relative blood volume (rBV) in normal tissue was 11.78% for Gd-DTPA and 6.64% for P792. The intra-class correlation coefficient (ICC) of rBV in normal tissue was 0.940 for Gd-DTPA and 0.978 for P792. The inter-subject correlation coefficient was 0.092. Calculated Ktrans from DCE-MRI showed comparable reproducibility (mean wCV, 5.13% for Gd-DTPA, 8.06% for P792). ICC of Ktrans showed high intra-subject reproducibility (ICC = 0.999/0.995) and inter-subject heterogeneity (ICC = 0.774). Histograms of Ktrans distributions for three measurements had high degrees of overlap (sum of difference of the normalized histograms <0.01). These results represent homogeneous intra-subject measurement and heterogeneous inter-subject character of biological population, suggesting that perfusion MRI could be an imaging biomarker to monitor or predict response of disease.
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Affiliation(s)
- Xiaomeng Zhang
- Biomedical Engineering Graduate Interdisciplinary Program, University of Arizona, Tucson, Arizona, United States of America
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, Florida, United States of America
- * E-mail:
| | - Mark D. Pagel
- Biomedical Engineering Graduate Interdisciplinary Program, University of Arizona, Tucson, Arizona, United States of America
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona, United States of America
- University of Arizona Cancer Center, University of Arizona, Tucson, Arizona, United States of America
| | - Amanda F. Baker
- University of Arizona Cancer Center, University of Arizona, Tucson, Arizona, United States of America
- Hematology/Oncology Section, College of Medicine, University of Arizona, Tucson, Arizona, United States of America
| | - Robert J. Gillies
- H. Lee Moffitt Cancer Center & Research Institute, Tampa, Florida, United States of America
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Huang CH, Tsourkas A. Gd-based macromolecules and nanoparticles as magnetic resonance contrast agents for molecular imaging. Curr Top Med Chem 2014; 13:411-21. [PMID: 23432004 DOI: 10.2174/1568026611313040002] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Revised: 11/21/2012] [Accepted: 11/26/2012] [Indexed: 11/22/2022]
Abstract
As we move towards an era of personalized medicine, molecular imaging contrast agents are likely to see an increasing presence in routine clinical practice. Magnetic resonance (MR) imaging has garnered particular interest as a platform for molecular imaging applications due its ability to monitor anatomical changes concomitant with physiologic and molecular changes. One promising new direction in the development of MR contrast agents involves the labeling and/or loading of nanoparticles with gadolinium (Gd). These nanoplatforms are capable of carrying large payloads of Gd, thus providing the requisite sensitivity to detect molecular signatures within disease pathologies. In this review, we discuss some of the progress that has recently been made in the development of Gd-based macromolecules and nanoparticles and outline some of the physical and chemical properties that will be important to incorporate into the next generation of contrast agents, including high Gd chelate stability, high "relaxivity per particle" and "relaxivity density", and biodegradability.
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Affiliation(s)
- Ching-Hui Huang
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA
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Wang H, Baran U, Li Y, Qin W, Wang W, Zeng H, Wang RK. Does optical microangiography provide accurate imaging of capillary vessels?: validation using multiphoton microscopy. JOURNAL OF BIOMEDICAL OPTICS 2014; 19:106011. [PMID: 25341071 PMCID: PMC4206785 DOI: 10.1117/1.jbo.19.10.106011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Accepted: 09/17/2014] [Indexed: 05/04/2023]
Abstract
Optical microangiography (OMAG) has been extensively utilized to study three-dimensional tissue vasculature in vivo. However, with the limited image resolution (∼10 μm ) of the commonly used systems, some concerns were raised: (1) whether OMAG is capable of providing the imaging of capillary vessels that are of an average diameter of ∼6 μm ; (2) if yes, whether OMAG can provide meaningful quantification of vascular density within the scanned tissue volume. Multiphoton microscopy (MPM) is capable of depth-resolved high-resolution (∼1 μm ) imaging of biological tissue structures. With externally labeled plasma, the vascular network including single capillaries can be well visualized. We compare the vascular images of in vivo mouse brain acquired by both OMAG and MPM systems. We found that within the penetration depth range of the MPM system, OMAG is able to accurately visualize blood vessels including capillaries. Although the resolution of OMAG may not be able to 100% resolve two closely packed tiny capillaries in tissue, it is still capable of visualizing most of the capillaries because there are interstitial tissue spaces between them. We believe our validation results reinforce the application of OMAG in microvasculature-related studies.
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Affiliation(s)
- Hequn Wang
- University of Washington, Department of Bioengineering, Seattle, Washington 98195, United States
| | - Utku Baran
- University of Washington, Department of Bioengineering, Seattle, Washington 98195, United States
| | - Yuandong Li
- University of Washington, Department of Bioengineering, Seattle, Washington 98195, United States
| | - Wan Qin
- University of Washington, Department of Bioengineering, Seattle, Washington 98195, United States
| | - Wenbo Wang
- British Columbia Cancer Agency Research Centre, Imaging Unit – Integrative Oncology Department, Vancouver, British Columbia V5Z1L3, Canada
| | - Haishan Zeng
- British Columbia Cancer Agency Research Centre, Imaging Unit – Integrative Oncology Department, Vancouver, British Columbia V5Z1L3, Canada
| | - Ruikang K. Wang
- University of Washington, Department of Bioengineering, Seattle, Washington 98195, United States
- Address all correspondence to: Ruikang K. Wang, E-mail:
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Practical dynamic contrast enhanced MRI in small animal models of cancer: data acquisition, data analysis, and interpretation. Pharmaceutics 2013; 4:442-78. [PMID: 23105959 PMCID: PMC3480221 DOI: 10.3390/pharmaceutics4030442] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Dynamic contrast enhanced magnetic resonance imaging (DCE-MRI) consists of the continuous acquisition of images before, during, and after the injection of a contrast agent. DCE-MRI allows for noninvasive evaluation of tumor parameters related to vascular perfusion and permeability and tissue volume fractions, and is frequently employed in both preclinical and clinical investigations. However, the experimental and analytical subtleties of the technique are not frequently discussed in the literature, nor are its relationships to other commonly used quantitative imaging techniques. This review aims to provide practical information on the development, implementation, and validation of a DCE-MRI study in the context of a preclinical study (though we do frequently refer to clinical studies that are related to these topics).
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Ye Z, Wu X, Tan M, Jesberger J, Grisworld M, Lu ZR. Synthesis and evaluation of a polydisulfide with Gd-DOTA monoamide side chains as a biodegradable macromolecular contrast agent for MR blood pool imaging. CONTRAST MEDIA & MOLECULAR IMAGING 2013; 8:220-8. [PMID: 23606425 DOI: 10.1002/cmmi.1520] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2012] [Revised: 10/06/2012] [Accepted: 11/03/2012] [Indexed: 11/09/2022]
Abstract
Macromolecular Gd(III)-based contrast agents are effective for contrast-enhanced blood pool and cancer MRI in preclinical studies. However, their clinical applications are impeded by potential safety concerns associated with slow excretion and prolonged retention of these agents in the body. To minimize the safety concerns of macromolecular Gd contrast agents, we have developed biodegradable macromolecular Gd contrast agents based on polydisulfide Gd(III) complexes. In this study, we designed and synthesized a new generation of the polydisulfide Gd(III) complexes containing a macrocyclic Gd(III) chelate, Gd-DOTA monoamide, to improve the in vivo kinetic inertness of the Gd(III) chelates. (N6-Lysyl)lysine-(Gd-DOTA) monoamide and 3-(2-carboxyethyldisulfanyl)propanoic acid copolymers (GODC) were synthesized by copolymerization of (N6-lysyl)lysine DOTA monoamide and dithiobis(succinimidylpropionate), followed by complexation with Gd(OAc)3. The GODC had an apparent molecular weight of 26.4 kDa and T1 relaxivity of 8.25 mM(-1) s(-1) per Gd at 1.5 T. The polymer chains of GODC were readily cleaved by L-cysteine and the chelates had high kinetic stability against transmetallation in the presence of an endogenous metal ion Zn(2+). In vivo MRI study showed that GODC produced strong and prolonged contrast enhancement in the vasculature and tumor periphery of mice with breast tumor xenografts. GODC is a promising biodegradable macromolecular MRI contrast agent with high kinetic stability for MR blood pool imaging.
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Affiliation(s)
- Zhen Ye
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA
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Tumor perfusion imaging predicts the intra-tumoral accumulation of liposomes. J Control Release 2013; 172:351-357. [DOI: 10.1016/j.jconrel.2013.08.296] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Revised: 08/20/2013] [Accepted: 08/30/2013] [Indexed: 01/18/2023]
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Alic L, van Vliet M, Wielopolski PA, ten Hagen TLM, van Dijke CF, Niessen WJ, Veenland JF. Regional heterogeneity changes in DCE-MRI as response to isolated limb perfusion in experimental soft-tissue sarcomas. CONTRAST MEDIA & MOLECULAR IMAGING 2013; 8:340-9. [PMID: 23613437 DOI: 10.1002/cmmi.1528] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2012] [Revised: 10/31/2012] [Accepted: 12/11/2012] [Indexed: 12/17/2022]
Abstract
Experimental evidence supports an association between heterogeneity in tumor perfusion and response to chemotherapy/radiotherapy, disease progression and malignancy. Therefore, changes in tumor perfusion may be used to assess early effects of tumor treatment. However, evaluating changes in tumor perfusion during treatment is complicated by extensive changes in tumor type, size, shape and appearance. Therefore, this study assesses the regional heterogeneity of tumors by dynamic contrast-enhanced MRI (DCE-MRI) and evaluates changes in response to isolated limb perfusion (ILP) with tumor necrosis factor alpha and melphalan. Data were acquired in an experimental cancer model, using a macromolecular contrast medium, albumin-(Gd-DTPA)45. Small fragments of BN 175 (a soft-tissue sarcoma) were implanted in eight brown Norway rats. MRI of five drug-treated and three sham-treated rats was performed at baseline and 1 h after ILP intervention. Properly co-registered baseline and follow-up DCE-MRI were used to estimate the volume transfer constant (K(trans) ) pharmacokinetic maps. The regional heterogeneity was estimated in 16 tumor sectors and presented in cumulative map-volume histograms. On average, ILP-treated tumors showed a decrease in regional heterogeneity on the histograms. This study shows that heterogenic changes in regional tumor perfusion, estimated using DCE-MRI pharmacokinetic maps, can be measured and used to assess the short-term effects of a potentially curative treatment on the tumor microvasculature in an experimental soft-tissue sarcoma model.
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Affiliation(s)
- L Alic
- Erasmus MC - University Medical Centre Rotterdam, Department of Medical Informatics, Rotterdam, The Netherlands.
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Nakajima T, Turkbey B, Sano K, Sato K, Bernardo M, Hoyt RF, Choyke PL, Kobayashi H. MR lymphangiography with intradermal gadofosveset and human serum albumin in mice and primates. J Magn Reson Imaging 2013; 40:691-7. [PMID: 24123370 DOI: 10.1002/jmri.24395] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Accepted: 08/15/2013] [Indexed: 11/08/2022] Open
Abstract
PURPOSE To investigate MR lymphangiography in mice and primates with intradermal Gadofosveset and human serum albumin. Gadofosveset is a US FDA approved small molecule Gadolinium (Gd) chelate (957 Da) which reversibly binds serum albumin and temporally behaves as a macromolecule. As the structure of albumin varies among species, the affinity of Gadofosveset is optimized for human albumin. In this study, Gadofosveset premixed with 10% human serum albumin (HSA) was injected intradermally in mice and monkeys, and then MR lymphangiography was performed on a 3.0 Tesla clinical scanner. MATERIALS AND METHODS Twenty microliters of each agent was injected intradermally at both sides of the front and back paws using a 30-gauge needle into female athymic nude mice (6-8 weeks old, n = 3 mice in each group). The performance of Gadofosveset-HSA was compared with Gd-labeled dendrimers (G4: 6 nm, G6: 10 nm) or Gd-DTPA. The target-to-muscle ratio (TMR = target signal intensity (SI)/muscle SI) was calculated at each time point. The TMRs were compared with a one-way analysis of variance followed by a Bonferroni multiple comparison test. RESULTS Images taken as early as 2.5 min after intradermal (id) injection depicted enhanced lymph nodes using Gadofosveset-HSA (2.41 ± 0.20). Up to 7.5 min after injection, TMRs of Gadofosveset-HSA were greater than those of dendrimers (G4 or G6-Gd-DTPA: 2.24 ± 0.10, 2.12 ± 0.11, respectively). By 15 min postinjection, TMRs of Gadofosveset-HSA (2.18 ± 0.19) were comparable to Gd-labeled dendrimers (G4-Gd-DTPA: 2.37 ± 0.15, G6-Gd-DTPA: 2.25 ± 0.18). Gadofosveset-HSA and Gd labeled dendrimers resulted in satisfactory MR lymphography in mice and monkeys. CONCLUSION Because both Gadofosveset and HSA are approved for human use and Gadofosveset clears rapidly through the kidneys, this method has advantages over Gd-dendrimers and could be used for visualizing lymphatic drainage and detecting lymph nodes.
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Glöggler S, Colell J, Appelt S. Para-hydrogen perspectives in hyperpolarized NMR. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2013; 235:130-142. [PMID: 23932399 DOI: 10.1016/j.jmr.2013.07.010] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Revised: 07/11/2013] [Accepted: 07/15/2013] [Indexed: 06/02/2023]
Abstract
The first instance of para-hydrogen induced polarization (PHIP) in an NMR experiment was serendipitously observed in the 1980s while investigating a hydrogenation reaction (Seldler et al., 1983; Bowers and Weitekamp, 1986, 1987; Eisenschmid et al., 1987) [1-4]. Remarkably a theoretical investigation of the applicability of para-hydrogen as a hyperpolarization agent was being performed in the 1980's thereby quickly providing a theoretical basis for the PHIP-effect (Bowers and Weitekamp, 1986) [2]. The discovery of signal amplification by a non-hydrogenating interaction with para-hydrogen has recently extended the interest to exploit the PHIP effect, as it enables investigation of compounds without structural alteration while retaining the advantages of spectroscopy with hyperpolarized compounds [5]. In this article we will place more emphasis of the future applications of the method while only briefly discussing the efforts that have been made in the understanding of the phenomenon and the development of the method so far.
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Affiliation(s)
- Stefan Glöggler
- Department of Chemistry and Biochemistry, University of California, 607 Charles E Young Drive East, Young Hall 2056, Los Angeles, CA 90095, USA.
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Xing XH, Cheng YS. Magnetic resonance functional and molecular imaging for diagnosis of rectal cancer: Recent research advances. Shijie Huaren Xiaohua Zazhi 2013; 21:1726-1732. [DOI: 10.11569/wcjd.v21.i18.1726] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Colorectal cancer is one of the most common gastrointestinal malignant tumors in China. Because of the difficulties in early diagnosis, the incidence and mortality of colorectal cancer have been increasing year by year. Molecular and functional imaging plays an important role in detecting rectal cancer earlier and more specifically and reducing patients' mortality. In this paper we discuss the present and future applications of magnetic resonance molecular and functional imaging in the diagnosis of rectal tumors.
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Talasila KM, Soentgerath A, Euskirchen P, Rosland GV, Wang J, Huszthy PC, Prestegarden L, Skaftnesmo KO, Sakariassen PØ, Eskilsson E, Stieber D, Keunen O, Brekka N, Moen I, Nigro JM, Vintermyr OK, Lund-Johansen M, Niclou S, Mørk SJ, Enger PØ, Bjerkvig R, Miletic H. EGFR wild-type amplification and activation promote invasion and development of glioblastoma independent of angiogenesis. Acta Neuropathol 2013; 125:683-98. [PMID: 23429996 PMCID: PMC3631314 DOI: 10.1007/s00401-013-1101-1] [Citation(s) in RCA: 107] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2012] [Revised: 01/24/2013] [Accepted: 02/09/2013] [Indexed: 11/15/2022]
Abstract
Angiogenesis is regarded as a hallmark of cancer progression and it has been postulated that solid tumor growth depends on angiogenesis. At present, however, it is clear that tumor cell invasion can occur without angiogenesis, a phenomenon that is particularly evident by the infiltrative growth of malignant brain tumors, such as glioblastomas (GBMs). In these tumors, amplification or overexpression of wild-type (wt) or truncated and constitutively activated epidermal growth factor receptor (EGFR) are regarded as important events in GBM development, where the complex downstream signaling events have been implicated in tumor cell invasion, angiogenesis and proliferation. Here, we show that amplification and in particular activation of wild-type EGFR represents an underlying mechanism for non-angiogenic, invasive tumor growth. Using a clinically relevant human GBM xenograft model, we show that tumor cells with EGFR gene amplification and activation diffusely infiltrate normal brain tissue independent of angiogenesis and that transient inhibition of EGFR activity by cetuximab inhibits the invasive tumor growth. Moreover, stable, long-term expression of a dominant-negative EGFR leads to a mesenchymal to epithelial-like transition and induction of angiogenic tumor growth. Analysis of human GBM biopsies confirmed that EGFR activation correlated with invasive/non-angiogenic tumor growth. In conclusion, our results indicate that activation of wild-type EGFR promotes invasion and glioblastoma development independent of angiogenesis, whereas loss of its activity results in angiogenic tumor growth.
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Affiliation(s)
- Krishna M. Talasila
- Department of Biomedicine, University of Bergen, Jonas Lies vei 91, 5009 Bergen, Norway
| | - Anke Soentgerath
- Department of Biomedicine, University of Bergen, Jonas Lies vei 91, 5009 Bergen, Norway
- Department of Neurosurgery, Hospital Cologne Merheim, 51109 Cologne, Germany
| | - Philipp Euskirchen
- Department of Biomedicine, University of Bergen, Jonas Lies vei 91, 5009 Bergen, Norway
| | - Gro V. Rosland
- Department of Biomedicine, University of Bergen, Jonas Lies vei 91, 5009 Bergen, Norway
| | - Jian Wang
- Department of Biomedicine, University of Bergen, Jonas Lies vei 91, 5009 Bergen, Norway
| | - Peter C. Huszthy
- Department of Biomedicine, University of Bergen, Jonas Lies vei 91, 5009 Bergen, Norway
| | - Lars Prestegarden
- Department of Biomedicine, University of Bergen, Jonas Lies vei 91, 5009 Bergen, Norway
- Department of Dermatology, Haukeland University Hospital, 5021 Bergen, Norway
| | - Kai Ove Skaftnesmo
- Department of Biomedicine, University of Bergen, Jonas Lies vei 91, 5009 Bergen, Norway
| | | | - Eskil Eskilsson
- Department of Biomedicine, University of Bergen, Jonas Lies vei 91, 5009 Bergen, Norway
| | - Daniel Stieber
- NorLux Neuro-Oncology Laboratory, CRP-Santé, 1526 Luxembourg, Luxembourg
| | - Olivier Keunen
- Department of Biomedicine, University of Bergen, Jonas Lies vei 91, 5009 Bergen, Norway
- NorLux Neuro-Oncology Laboratory, CRP-Santé, 1526 Luxembourg, Luxembourg
| | - Narve Brekka
- Department of Biomedicine, University of Bergen, Jonas Lies vei 91, 5009 Bergen, Norway
| | - Ingrid Moen
- Department of Biomedicine, University of Bergen, Jonas Lies vei 91, 5009 Bergen, Norway
| | - Janice M. Nigro
- Department of Biomedicine, University of Bergen, Jonas Lies vei 91, 5009 Bergen, Norway
| | - Olav K. Vintermyr
- Department of Pathology, The Gade Institute, Haukeland University Hospital, Jonas Lies vei 65, 5021 Bergen, Norway
| | - Morten Lund-Johansen
- Department of Neurosurgery, Haukeland University Hospital, 5021 Bergen, Norway
- Institute of Surgical Science, University of Bergen, Jonas Lies vei 91, 5009 Bergen, Norway
| | - Simone Niclou
- NorLux Neuro-Oncology Laboratory, CRP-Santé, 1526 Luxembourg, Luxembourg
| | - Sverre J. Mørk
- Department of Pathology, The Gade Institute, Haukeland University Hospital, Jonas Lies vei 65, 5021 Bergen, Norway
| | - Per Øyvind Enger
- Department of Biomedicine, University of Bergen, Jonas Lies vei 91, 5009 Bergen, Norway
- Department of Neurosurgery, Haukeland University Hospital, 5021 Bergen, Norway
| | - Rolf Bjerkvig
- Department of Biomedicine, University of Bergen, Jonas Lies vei 91, 5009 Bergen, Norway
- NorLux Neuro-Oncology Laboratory, CRP-Santé, 1526 Luxembourg, Luxembourg
| | - Hrvoje Miletic
- Department of Biomedicine, University of Bergen, Jonas Lies vei 91, 5009 Bergen, Norway
- Department of Pathology, The Gade Institute, Haukeland University Hospital, Jonas Lies vei 65, 5021 Bergen, Norway
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Saritas EU, Goodwill PW, Croft LR, Konkle JJ, Lu K, Zheng B, Conolly SM. Magnetic particle imaging (MPI) for NMR and MRI researchers. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2013; 229:116-26. [PMID: 23305842 PMCID: PMC3602323 DOI: 10.1016/j.jmr.2012.11.029] [Citation(s) in RCA: 158] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2012] [Revised: 11/21/2012] [Accepted: 11/30/2012] [Indexed: 05/04/2023]
Abstract
Magnetic Particle Imaging (MPI) is a new tracer imaging modality that is gaining significant interest from NMR and MRI researchers. While the physics of MPI differ substantially from MRI, it employs hardware and imaging concepts that are familiar to MRI researchers, such as magnetic excitation and detection, pulse sequences, and relaxation effects. Furthermore, MPI employs the same superparamagnetic iron oxide (SPIO) contrast agents that are sometimes used for MR angiography and are often used for MRI cell tracking studies. These SPIOs are much safer for humans than iodine or gadolinium, especially for Chronic Kidney Disease (CKD) patients. The weak kidneys of CKD patients cannot safely excrete iodine or gadolinium, leading to increased morbidity and mortality after iodinated X-ray or CT angiograms, or after gadolinium-MRA studies. Iron oxides, on the other hand, are processed in the liver, and have been shown to be safe even for CKD patients. Unlike the "black blood" contrast generated by SPIOs in MRI due to increased T2* dephasing, SPIOs in MPI generate positive, "bright blood" contrast. With this ideal contrast, even prototype MPI scanners can already achieve fast, high-sensitivity, and high-contrast angiograms with millimeter-scale resolutions in phantoms and in animals. Moreover, MPI shows great potential for an exciting array of applications, including stem cell tracking in vivo, first-pass contrast studies to diagnose or stage cancer, and inflammation imaging in vivo. So far, only a handful of prototype small-animal MPI scanners have been constructed worldwide. Hence, MPI is open to great advances, especially in hardware, pulse sequence, and nanoparticle improvements, with the potential to revolutionize the biomedical imaging field.
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Affiliation(s)
- Emine U Saritas
- Department of Bioengineering, University of California, Berkeley, Berkeley, CA 94720-1762, USA.
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Tang J, Sheng Y, Hu H, Shen Y. Macromolecular MRI contrast agents: Structures, properties and applications. Prog Polym Sci 2013. [DOI: 10.1016/j.progpolymsci.2012.07.001] [Citation(s) in RCA: 118] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Quantum Dots as Multifunctional Materials for Tumor Imaging and Therapy. MATERIALS 2013; 6:483-499. [PMID: 28809320 PMCID: PMC5452096 DOI: 10.3390/ma6020483] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Revised: 01/10/2013] [Accepted: 01/22/2013] [Indexed: 12/26/2022]
Abstract
The rapidly developing field of quantum dots (QDs) provides researchers with more options for imaging modalities and therapeutic strategies. In recent years, QDs were widely used as multifunctional materials for tumor imaging and therapy due to their characteristic properties such as semiconductive, zero-dimension and strong fluorescence. Nevertheless, there still exist the challenges of employing these properties of QDs for clinical diagnosis and therapy. Herein, we briefly review the development, properties and applications of QDs in tumor imaging and therapy. Future perspectives in these areas are also proposed as well.
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Bernsen MR, Ruggiero A, van Straten M, Kotek G, Haeck JC, Wielopolski PA, Krestin GP. Computed tomography and magnetic resonance imaging. Recent Results Cancer Res 2013. [PMID: 23179877 DOI: 10.1007/978-3-642-10853-2_1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Imaging in Oncology is rapidly moving from the detection and size measurement of a lesion to the quantitative assessment of metabolic processes and cellular and molecular interactions. Increasing insights into cancer as a complex disease with involvement of the tumor stroma in tumor pathobiological processes have made it clear that for successful control of cancer, treatment strategies should not only be directed at the tumor cells but also targeted at the tumor microenvironment. This requires understanding of the complex molecular and cellular interactions in cancer tissue. Recent developments in imaging technology have increased the possibility to image various pathobiological processes in cancer development and response to treatment. For computed tomography (CT) and magnetic resonance imaging (MRI) various improvements in hardware, software, and imaging probes have lifted these modalities from classical anatomical imaging techniques to techniques suitable to image and quantify various physiological processes and molecular and cellular interactions. Next to a more general overview of possible imaging targets in oncology this chapter provides an overview of the various developments in CT and MRI technology and some specific applications.
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Affiliation(s)
- Monique R Bernsen
- Department of Radiology, Erasmus MC-University Medical Center Rotterdam, Rotterdam, The Netherlands.
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Abstract
Magnetic resonance imaging (MRI) is a key imaging modality in cancer diagnostics and therapy monitoring. MRI-based tumor detection and characterization is commonly achieved by exploiting the compositional, metabolic, cellular, and vascular differences between malignant and healthy tissue. Contrast agents are frequently applied to enhance this contrast. The last decade has witnessed an increasing interest in novel multifunctional MRI probes. These multifunctional constructs, often of nanoparticle design, allow the incorporation of multiple imaging agents for complementary imaging modalities as well as anti-cancer drugs for therapeutic purposes. The composition, size, and surface properties of such constructs can be tailored as to improve biodistribution and ensure optimal delivery to the tumor microenvironment by passive or targeted mechanisms. Multifunctional MRI probes hold great promise to facilitate more specific tumor diagnosis, patient-specific treatment planning, the monitoring of local drug delivery, and the early evaluation of therapy. This chapter reviews the state-of-the-art and new developments in the application of multifunctional MRI probes in oncology.
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Affiliation(s)
- Ewelina Kluza
- Biomedical NMR, Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands.
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