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Wilken E, Havlas A, Masthoff M, Moussavi A, Boretius S, Faber C. Radial compressed sensing imaging improves the velocity detection limit of single cell tracking time-lapse MRI. Magn Reson Med 2024; 91:1449-1463. [PMID: 38044790 DOI: 10.1002/mrm.29946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 10/24/2023] [Accepted: 11/10/2023] [Indexed: 12/05/2023]
Abstract
PURPOSE Time-lapse MRI enables tracking of single iron-labeled cells. Yet, due to temporal blurring, only slowly moving cells can be resolved. To study faster cells for example during inflammatory processes, accelerated acquisition is needed. METHODS A rotating phantom system was developed to quantitatively measure the current maximum detectable speed of cells in time-lapse MRI. For accelerated cell tracking, an interleaved radial acquisition scheme was applied to phantom and murine brain in vivo time-lapse MRI experiments at 9.4 T. Detection of iron-labeled cells was evaluated in fully sampled and undersampled reconstructions with and without compressed sensing. RESULTS The rotating phantom system enabled ultra-slow rotation of phantoms and a velocity detection limit of full-brain Cartesian time-lapse MRI of up to 172 μm/min was determined. Both phantom and in vivo measurements showed that single cells can be followed dynamically using radial time-lapse MRI. Higher temporal resolution of undersampled reconstructions reduced geometric distortion, the velocity detection limit was increased to 1.1 mm/min in vitro, and previously hidden fast-moving cells were recovered. In the mouse brain after in vivo labeling, a total of 42 ± 4 cells were counted in fully sampled, but only 7 ± 1 in undersampled images due to streaking artifacts. Using compressed sensing 33 ± 4 cells were detected. CONCLUSION Interleaved radial time-lapse MRI permits retrospective reconstruction of both fully sampled and accelerated images, enables single cell tracking at higher temporal resolution and recovers cells hidden before due to blurring. The velocity detection limit as determined with the rotating phantom system increased two- to three-fold compared to previous results.
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Affiliation(s)
- Enrica Wilken
- Clinic of Radiology, University of Münster, Münster, Germany
| | - Asli Havlas
- Clinic of Radiology, University of Münster, Münster, Germany
| | - Max Masthoff
- Clinic of Radiology, University of Münster, Münster, Germany
| | - Amir Moussavi
- Functional Imaging Laboratory, German Primate Center, Leibniz Institute for Primate Research, Göttingen, Germany
| | - Susann Boretius
- Functional Imaging Laboratory, German Primate Center, Leibniz Institute for Primate Research, Göttingen, Germany
| | - Cornelius Faber
- Clinic of Radiology, University of Münster, Münster, Germany
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2
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Roosen L, Maes D, Musetta L, Himmelreich U. Preclinical Models for Cryptococcosis of the CNS and Their Characterization Using In Vivo Imaging Techniques. J Fungi (Basel) 2024; 10:146. [PMID: 38392818 PMCID: PMC10890286 DOI: 10.3390/jof10020146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 01/24/2024] [Accepted: 01/30/2024] [Indexed: 02/24/2024] Open
Abstract
Infections caused by Cryptococcus neoformans and Cryptococcus gattii remain a challenge to our healthcare systems as they are still difficult to treat. In order to improve treatment success, in particular for infections that have disseminated to the central nervous system, a better understanding of the disease is needed, addressing questions like how it evolves from a pulmonary to a brain disease and how novel treatment approaches can be developed and validated. This requires not only clinical research and research on the microorganisms in a laboratory environment but also preclinical models in order to study cryptococci in the host. We provide an overview of available preclinical models, with particular emphasis on models of cryptococcosis in rodents. In order to further improve the characterization of rodent models, in particular the dynamic aspects of disease manifestation, development, and ultimate treatment, preclinical in vivo imaging methods are increasingly used, mainly in research for oncological, neurological, and cardiac diseases. In vivo imaging applications for fungal infections are rather sparse. A second aspect of this review is how research on models of cryptococcosis can benefit from in vivo imaging methods that not only provide information on morphology and tissue structure but also on function, metabolism, and cellular properties in a non-invasive way.
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Affiliation(s)
- Lara Roosen
- Biomedical MRI, Department of Imaging and Pathology, KU Leuven, 3000 Leuven, Belgium
| | - Dries Maes
- Biomedical MRI, Department of Imaging and Pathology, KU Leuven, 3000 Leuven, Belgium
| | - Luigi Musetta
- Biomedical MRI, Department of Imaging and Pathology, KU Leuven, 3000 Leuven, Belgium
| | - Uwe Himmelreich
- Biomedical MRI, Department of Imaging and Pathology, KU Leuven, 3000 Leuven, Belgium
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3
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Chen S, Chen X, Su H, Guo M, Liu H. Advances in Synthetic-Biology-Based Whole-Cell Biosensors: Principles, Genetic Modules, and Applications in Food Safety. Int J Mol Sci 2023; 24:ijms24097989. [PMID: 37175695 PMCID: PMC10178329 DOI: 10.3390/ijms24097989] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 04/17/2023] [Accepted: 04/21/2023] [Indexed: 05/15/2023] Open
Abstract
A whole-cell biosensor based on synthetic biology provides a promising new method for the on-site detection of food contaminants. The basic components of whole-cell biosensors include the sensing elements, such as transcription factors and riboswitches, and reporting elements, such as fluorescence, gas, etc. The sensing and reporting elements are coupled through gene expression regulation to form a simple gene circuit for the detection of target substances. Additionally, a more complex gene circuit can involve other functional elements or modules such as signal amplification, multiple detection, and delay reporting. With the help of synthetic biology, whole-cell biosensors are becoming more versatile and integrated, that is, integrating pre-detection sample processing, detection processes, and post-detection signal calculation and storage processes into cells. Due to the relative stability of the intracellular environment, whole-cell biosensors are highly resistant to interference without the need of complex sample preprocessing. Due to the reproduction of chassis cells, whole-cell biosensors replicate all elements automatically without the need for purification processing. Therefore, whole-cell biosensors are easy to operate and simple to produce. Based on the above advantages, whole-cell biosensors are more suitable for on-site detection than other rapid detection methods. Whole-cell biosensors have been applied in various forms such as test strips and kits, with the latest reported forms being wearable devices such as masks, hand rings, and clothing. This paper examines the composition, construction methods, and types of the fundamental components of synthetic biological whole-cell biosensors. We also introduce the prospect and development trend of whole-cell biosensors in commercial applications.
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Affiliation(s)
- Shijing Chen
- School of Food and Health, Beijing Technology and Business University (BTBU), Beijing 100048, China
| | - Xiaolin Chen
- School of Food and Health, Beijing Technology and Business University (BTBU), Beijing 100048, China
| | - Hongfei Su
- School of Food and Health, Beijing Technology and Business University (BTBU), Beijing 100048, China
| | - Mingzhang Guo
- School of Food and Health, Beijing Technology and Business University (BTBU), Beijing 100048, China
| | - Huilin Liu
- School of Food and Health, Beijing Technology and Business University (BTBU), Beijing 100048, China
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4
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Nakayama M, Yamamoto S, Hirabayashi H. Novel Cell Quantification Method Using a Single Surrogate Calibration Curve Across Various Biological Samples. AAPS J 2023; 25:26. [PMID: 36806998 DOI: 10.1208/s12248-023-00791-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 02/02/2023] [Indexed: 02/19/2023] Open
Abstract
Quantitative polymerase chain reaction (qPCR) is generally used to quantify transplanted cell therapy products in biological samples. As the matrix effects on PCR amplification and variability in DNA recovery from biological samples are well-known limitations that hinder the assay's performance, a calibration curve is conventionally established for each matrix. Droplet digital PCR (ddPCR) is based on the endpoint assay and advantageous in avoiding matrix effects. Moreover, the use of an external control gene may correct assay fluctuations to minimize the effects caused by inconsistent DNA recovery. In this study, we aimed to establish a novel and robust ddPCR method capable of quantifying human cells across various mouse biological samples using a single surrogate calibration curve in combination with an external control gene and DNA recovery normalization. Acceptable accuracy and precision were observed for quality control samples from different tissues, indicating the excellent quantitative and versatile potential of the developed method. Furthermore, the established method enabled the evaluation of human CD8+ T cell biodistribution in immunodeficient mice. Our findings provide new insights into the use of ddPCR-based quantification methods in biodistribution studies of cell therapy products.
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Affiliation(s)
- Miyu Nakayama
- Drug Metabolism and Pharmacokinetics Research Laboratories, Preclinical and Translational Sciences, Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-Chome, Fujisawa, Kanagawa, Japan.
| | - Syunsuke Yamamoto
- Drug Metabolism and Pharmacokinetics Research Laboratories, Preclinical and Translational Sciences, Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-Chome, Fujisawa, Kanagawa, Japan
| | - Hideki Hirabayashi
- Drug Metabolism and Pharmacokinetics Research Laboratories, Preclinical and Translational Sciences, Research, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-Chome, Fujisawa, Kanagawa, Japan
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Non-pyrogenic highly pure magnetosomes for efficient hyperthermia treatment of prostate cancer. Appl Microbiol Biotechnol 2023; 107:1159-1176. [PMID: 36633624 DOI: 10.1007/s00253-022-12247-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 10/13/2022] [Accepted: 10/15/2022] [Indexed: 01/13/2023]
Abstract
We report the fabrication of highly pure magnetosomes that are synthesized by magnetotactic bacteria (MTB) using pharmaceutically compatible growth media, i.e., without compounds of animal origin (yeast extracts), carcinogenic, mutagenic, or toxic for reproduction (CMR) products, and other heavy metals than iron. To enable magnetosome medical applications, these growth media are reduced and amended compared with media commonly used to grow these bacteria. Furthermore, magnetosomes are made non-pyrogenic by being extracted from these micro-organisms and heated above 400 °C to remove and denature bacterial organic material and produce inorganic magnetosome minerals. To be stabilized, these minerals are further coated with citric acid to yield M-CA, leading to fully reconstructed chains of magnetosomes. The heating properties and anti-tumor activity of highly pure M-CA are then studied by bringing M-CA into contact with PC3-Luc tumor cells and by exposing such assembly to an alternating magnetic field (AMF) of 42 mT and 195 kHz during 30 min. While in the absence of AMF, M-CA are observed to be non-cytotoxic, they result in a 35% decrease in cell viability following AMF application. The treatment efficacy can be associated with a specific absorption rate (SAR) value of M-CA, which is relatively high in cellular environment, i.e., SARcell = 253 ± 11 W/gFe, while being lower than the M-CA SAR value measured in water, i.e., SARwater = 1025 ± 194 W/gFe, highlighting that a reduction in the Brownian contribution to the SAR value in cellular environment does not prevent efficient tumor cell destruction with these nanoparticles. KEY POINTS : • Highly pure magnetosomes were produced in pharmaceutically compatible growth media • Non-pyrogenic and stable magnetosomes were prepared for human injection • Magnetosomes efficiently destroyed prostate tumor cells in magnetic hyperthermia.
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6
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Anwar I, Ashfaq UA. Impact of Nanotechnology on Differentiation and Augmentation of Stem Cells for Liver Therapy. Crit Rev Ther Drug Carrier Syst 2023; 40:89-116. [PMID: 37585310 DOI: 10.1615/critrevtherdrugcarriersyst.2023042400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/18/2023]
Abstract
The liver is one of the crucial organs of the body that performs hundreds of chemical reactions needed by the body to survive. It is also the largest gland of the body. The liver has multiple functions, including the synthesis of chemicals, metabolism of nutrients, and removal of toxins. It also acts as a storage unit. The liver has a unique ability to regenerate itself, but it can lead to permanent damage if the injury is beyond recovery. The only possible treatment of severe liver damage is liver transplant which is a costly procedure and has several other drawbacks. Therefore, attention has been shifted towards the use of stem cells that have shown the ability to differentiate into hepatocytes. Among the numerous kinds of stem cells (SCs), the mesenchymal stem cells (MSCs) are the most famous. Various studies suggest that an MSC transplant can repair liver function, improve the signs and symptoms, and increase the chances of survival. This review discusses the impact of combining stem cell therapy with nanotechnology. By integrating stem cell science and nanotechnology, the information about stem cell differentiation and regulation will increase, resulting in a better comprehension of stem cell-based treatment strategies. The augmentation of SCs with nanoparticles has been shown to boost the effect of stem cell-based therapy. Also, the function of green nanoparticles in liver therapies is discussed.
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Affiliation(s)
- Ifrah Anwar
- Department of Bioinformatics and Biotechnology, Government College University Faisalabad, Faisalabad, Pakistan
| | - Usman Ali Ashfaq
- Department of Bioinformatics and Biotechnology, Government College University Faisalabad, Faisalabad, Pakistan
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7
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Hu B, Cheng Z, Liang S. Advantages and prospects of stem cells in nanotoxicology. CHEMOSPHERE 2022; 291:132861. [PMID: 34774913 DOI: 10.1016/j.chemosphere.2021.132861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Revised: 11/06/2021] [Accepted: 11/08/2021] [Indexed: 06/13/2023]
Abstract
Nanomaterials have been widely used in many fields, especially in biomedical and stem cell therapy. However, the potential risks associated with nanomaterials applications are also gradually increasing. Therefore, effective and robust toxicology models are critical to evaluate the developmental toxicity of nanomaterials. The development of stem cell research provides a new idea of developmental toxicology. Recently, many researchers actively investigated the effects of nanomaterials with different sizes and surface modifications on various stem cells (such as embryonic stem cells (ESCs), adult stem cells, etc.) to study the toxic effects and toxic mechanisms. In this review, we summarized the effects of nanomaterials on the proliferation and differentiation of ESCs, mesenchymal stem cells and neural stem cells. Moreover, we discussed the advantages of stem cells in nanotoxicology compared with other cell lines. Finally, combined with the latest research methods and new molecular mechanisms, we analyzed the application of stem cells in nanotoxicology.
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Affiliation(s)
- Bowen Hu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xinjiang Medical University, Urumqi, Xinjiang, 830017, China.
| | - Zhanwen Cheng
- School of Environmental Science and Engineering, College of Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Shengxian Liang
- Institute of Life Sciences and Green Development, College of Life Sciences, Hebei University, Baoding, 071000, China
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8
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Chung S, Revia RA, Zhang M. Iron oxide nanoparticles for immune cell labeling and cancer immunotherapy. NANOSCALE HORIZONS 2021; 6:696-717. [PMID: 34286791 PMCID: PMC8496976 DOI: 10.1039/d1nh00179e] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Cancer immunotherapy is a novel approach to cancer treatment that leverages components of the immune system as opposed to chemotherapeutics or radiation. Cell migration is an integral process in a therapeutic immune response, and the ability to track and image the migration of immune cells in vivo allows for better characterization of the disease and monitoring of the therapeutic outcomes. Iron oxide nanoparticles (IONPs) are promising candidates for use in immunotherapy as they are biocompatible, have flexible surface chemistry, and display magnetic properties that may be used in contrast-enhanced magnetic resonance imaging (MRI). In this review, advances in application of IONPs in cell tracking and cancer immunotherapy are presented. Following a brief overview of the cancer immunity cycle, developments in labeling and tracking various immune cells using IONPs are highlighted. We also discuss factors that influence the effectiveness of IONPs as MRI contrast agents. Finally, we outline different approaches for cancer immunotherapy and highlight current efforts that utilize IONPs to stimulate immune cells to enhance their activity and response to cancer.
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Affiliation(s)
- Seokhwan Chung
- Department of Materials Science and Engineering, University of Washington, Seattle, Washington 98195, USA.
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9
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Harizaj A, Descamps B, Mangodt C, Stremersch S, Stoppa A, Balcaen L, Brans T, De Rooster H, Devriendt N, Fraire JC, Bolea-Fernandez E, De Wever O, Willaert W, Vanhaecke F, Stevens CV, De Smedt SC, Roman B, Vanhove C, Lentacker I, Braeckmans K. Cytosolic delivery of gadolinium via photoporation enables improved in vivo magnetic resonance imaging of cancer cells. Biomater Sci 2021; 9:4005-4018. [PMID: 33899850 DOI: 10.1039/d1bm00479d] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Longitudinal in vivo monitoring of transplanted cells is crucial to perform cancer research or to assess the treatment outcome of cell-based therapies. While several bio-imaging techniques can be used, magnetic resonance imaging (MRI) clearly stands out in terms of high spatial resolution and excellent soft-tissue contrast. However, MRI suffers from low sensitivity, requiring cells to be labeled with high concentrations of contrast agents. An interesting option is to label cells with clinically approved gadolinium chelates which generate a hyperintense MR signal. However, spontaneous uptake of the label via pinocytosis results in its endosomal sequestration, leading to quenching of the T1-weighted relaxation. To avoid this quenching effect, delivery of gadolinium chelates directly into the cytosol via electroporation or hypotonic cell swelling have been proposed. However, these methods are also accompanied by several drawbacks such as a high cytotoxicity, and changes in gene expression and phenotype. Here, we demonstrate that nanoparticle-sensitized laser induced photoporation forms an attractive alternative to efficiently deliver the contrast agent gadobutrol into the cytosol of both HeLa and SK-OV-3 IP1 cells. After intracellular delivery by photoporation the quenching effect is clearly avoided, leading to a strong increase in the hyperintense T1-weighted MR signal. Moreover, when compared to nucleofection as a state-of-the-art electroporation platform, photoporation has much less impact on cell viability, which is extremely important for reliable cell tracking studies. Additional experiments confirm that photoporation does not induce any change in the long-term viability or the migratory capacity of the cells. Finally, we show that gadolinium 'labeled' SK-OV-3 IP1 cells can be imaged in vivo by MRI with high soft-tissue contrast and spatial resolution, revealing indications of potential tumor invasion or angiogenesis.
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Affiliation(s)
- Aranit Harizaj
- Laboratory of General Biochemistry and Physical Pharmacy, Faculty of Pharmaceutical Science, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium.
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10
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Zhuang L, Kong Y, Yang S, Lu F, Gong Z, Zhan S, Liu M. Dynamic changes of inflammation and apoptosis in cerebral ischemia‑reperfusion injury in mice investigated by ferumoxytol‑enhanced magnetic resonance imaging. Mol Med Rep 2021; 23:282. [PMID: 33604682 PMCID: PMC7905325 DOI: 10.3892/mmr.2021.11921] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 03/13/2020] [Indexed: 01/21/2023] Open
Abstract
The inflammatory response and apoptosis are key factors in cerebral ischemia-reperfusion injury. The severity of the inflammatory reaction and apoptosis has an important impact on the prognosis of stroke. The ultrasmall superparamagnetic iron oxide particle has provided an effective magnetic resonance molecular imaging method for dynamic observation of the cell infiltration process in vivo. The aims of the present study were to investigate the inflammatory response of cerebral ischemia-reperfusion injury in mice using ferumoxytol-enhanced magnetic resonance imaging, and to observe the dynamic changes of inflammatory response and apoptosis. In the present study a C57BL/6n mouse cerebral ischemia-reperfusion model was established by blocking the right middle cerebral artery with an occluding suture. Subsequently, the mice were injected with ferumoxytol via the tail vein, and magnetic resonance scanning was performed at corresponding time points to observe the signal changes. Furthermore, blood samples were used to measure the level of serum inflammatory factors, and histological staining was performed to assess the number of iron-swallowing microglial cells and apoptotic cells. The present results suggested that there was no significant difference in the serum inflammatory factors tumor necrosis factor-α and interleukin 1β between the middle cerebral artery occlusion (MCAO) and MCAO + ferumoxytol groups injected with ferumoxytol and physiological saline. The lowest signal ratio in the negative enhancement region was decreased 24 h after reperfusion in mice injected with ferumoxytol. The proportion of iron-swallowing microglial cells and TUNEL-positive cells were the highest at 24 h after reperfusion, and decreased gradually at 48 and 72 h after reperfusion. Therefore, the present results indicated that ferumoxytol injection of 18 mg Fe/kg does not affect the inflammatory response in the acute phase of cerebral ischemia and reperfusion. Ferumoxytol-enhanced magnetic resonance imaging can be used as an effective means to monitor the inflammatory response in the acute phase of cerebral ischemia-reperfusion injury. Furthermore, it was found that activation of the inflammatory response and apoptosis in the acute stage of cerebral ischemia-reperfusion injury is consistent.
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Affiliation(s)
- Lihua Zhuang
- Department of Radiology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, P.R. China
| | - Yingnan Kong
- Department of Radiology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, P.R. China
| | - Shuohui Yang
- Department of Radiology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, P.R. China
| | - Fang Lu
- Department of Radiology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, P.R. China
| | - Zhigang Gong
- Department of Radiology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, P.R. China
| | - Songhua Zhan
- Department of Radiology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, P.R. China
| | - Mengxiao Liu
- MR Scientific Marketing, Siemens Healthcare, Shanghai 201318, P.R. China
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11
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Lijster T, Åberg C. Asymmetry of nanoparticle inheritance upon cell division: Effect on the coefficient of variation. PLoS One 2020; 15:e0242547. [PMID: 33201918 PMCID: PMC7671523 DOI: 10.1371/journal.pone.0242547] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 11/04/2020] [Indexed: 11/28/2022] Open
Abstract
Several previous studies have shown that when a cell that has taken up nanoparticles divides, the nanoparticles are inherited by the two daughter cells in an asymmetrical fashion, with one daughter cell receiving more nanoparticles than the other. This interesting observation is typically demonstrated either indirectly using mathematical modelling of high-throughput experimental data or more directly by imaging individual cells as they divide. Here we suggest that measurements of the coefficient of variation (standard deviation over mean) of the number of nanoparticles per cell over the cell population is another means of assessing the degree of asymmetry. Using simulations of an evolving cell population, we show that the coefficient of variation is sensitive to the degree of asymmetry and note its characteristic evolution in time. As the coefficient of variation is readily measurable using high-throughput techniques, this should allow a more rapid experimental assessment of the degree of asymmetry.
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Affiliation(s)
- Tim Lijster
- Groningen Research Institute of Pharmacy, University of Groningen, Groningen, The Netherlands
| | - Christoffer Åberg
- Groningen Research Institute of Pharmacy, University of Groningen, Groningen, The Netherlands
- * E-mail:
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12
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Reichardt W, von Elverfeldt D. Preclinical Applications of Magnetic Resonance Imaging in Oncology. Recent Results Cancer Res 2020; 216:405-437. [PMID: 32594394 DOI: 10.1007/978-3-030-42618-7_12] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The evolving possibilities of molecular imaging (MI) are fundamentally changing the way we look at cancer, with imaging paradigms now shifting away from basic morphological measures toward the longitudinal assessment of functional, metabolic, cellular, and molecular information in vivo. Recent developments of imaging methodology and probe molecules utilizing the vast number of novel animal models of human cancers have enhanced our ability to non-invasively characterize neoplastic tissue and follow anticancer treatments. While preclinical molecular imaging offers a whole palette of excellent methodology to choose from, we will focus on magnetic resonance imaging (MRI) techniques, since they provide excellent molecular imaging capabilities and bear high potential for clinical translation. Prerequisites and consequences of using animal models as surrogates of human cancers in preclinical molecular imaging are outlined. We present physical principles, values, and limitations of MRI as molecular imaging modality and comment on its high potential to non-invasively assess information on metabolism, hypoxia, angiogenesis, and cell trafficking in preclinical cancer research.
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Affiliation(s)
- Wilfried Reichardt
- Medical Physics, Department of Radiology, Faculty of Medicine, University of Freiburg, Freiburg, Germany. .,German Consortium for Translational Cancer Research (DKTK), Heidelberg, Germany. .,German Cancer Research Center (DKFZ), Heidelberg, Germany.
| | - Dominik von Elverfeldt
- Medical Physics, Department of Radiology, Faculty of Medicine, University of Freiburg, Freiburg, Germany
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13
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Tielemans B, Dekoster K, Verleden SE, Sawall S, Leszczyński B, Laperre K, Vanstapel A, Verschakelen J, Kachelriess M, Verbeken E, Swoger J, Vande Velde G. From Mouse to Man and Back: Closing the Correlation Gap between Imaging and Histopathology for Lung Diseases. Diagnostics (Basel) 2020; 10:E636. [PMID: 32859103 PMCID: PMC7554749 DOI: 10.3390/diagnostics10090636] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 08/21/2020] [Accepted: 08/24/2020] [Indexed: 02/07/2023] Open
Abstract
Lung diseases such as fibrosis, asthma, cystic fibrosis, infection and cancer are life-threatening conditions that slowly deteriorate quality of life and for which our diagnostic power is high, but our knowledge on etiology and/or effective treatment options still contains important gaps. In the context of day-to-day practice, clinical and preclinical studies, clinicians and basic researchers team up and continuously strive to increase insights into lung disease progression, diagnostic and treatment options. To unravel disease processes and to test novel therapeutic approaches, investigators typically rely on end-stage procedures such as serum analysis, cyto-/chemokine profiles and selective tissue histology from animal models. These techniques are useful but provide only a snapshot of disease processes that are essentially dynamic in time and space. Technology allowing evaluation of live animals repeatedly is indispensable to gain a better insight into the dynamics of lung disease progression and treatment effects. Computed tomography (CT) is a clinical diagnostic imaging technique that can have enormous benefits in a research context too. Yet, the implementation of imaging techniques in laboratories lags behind. In this review we want to showcase the integrated approaches and novel developments in imaging, lung functional testing and pathological techniques that are used to assess, diagnose, quantify and treat lung disease and that may be employed in research on patients and animals. Imaging approaches result in often novel anatomical and functional biomarkers, resulting in many advantages, such as better insight in disease progression and a reduction in the numbers of animals necessary. We here showcase integrated assessment of lung disease with imaging and histopathological technologies, applied to the example of lung fibrosis. Better integration of clinical and preclinical imaging technologies with pathology will ultimately result in improved clinical translation of (therapy) study results.
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Affiliation(s)
- Birger Tielemans
- Department of Imaging and Pathology, KU Leuven, University of Leuven, 3000 Leuven, Belgium; (B.T.); (K.D.); (J.V.); (E.V.)
| | - Kaat Dekoster
- Department of Imaging and Pathology, KU Leuven, University of Leuven, 3000 Leuven, Belgium; (B.T.); (K.D.); (J.V.); (E.V.)
| | - Stijn E. Verleden
- Department of CHROMETA, BREATHE lab, KU Leuven, 3000 Leuven, Belgium; (S.E.V.); (A.V.)
| | - Stefan Sawall
- German Cancer Research Center (DKFZ), X-Ray Imaging and CT, Heidelberg University, 69117 Heidelberg, Germany; (S.S.); (M.K.)
| | - Bartosz Leszczyński
- Department of Medical Physics, M. Smoluchowski Institute of Physics, Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, 31-007 Kraków, Poland;
| | | | - Arno Vanstapel
- Department of CHROMETA, BREATHE lab, KU Leuven, 3000 Leuven, Belgium; (S.E.V.); (A.V.)
| | - Johny Verschakelen
- Department of Imaging and Pathology, KU Leuven, University of Leuven, 3000 Leuven, Belgium; (B.T.); (K.D.); (J.V.); (E.V.)
| | - Marc Kachelriess
- German Cancer Research Center (DKFZ), X-Ray Imaging and CT, Heidelberg University, 69117 Heidelberg, Germany; (S.S.); (M.K.)
| | - Erik Verbeken
- Department of Imaging and Pathology, KU Leuven, University of Leuven, 3000 Leuven, Belgium; (B.T.); (K.D.); (J.V.); (E.V.)
| | - Jim Swoger
- European Molecular Biology Laboratory (EMBL) Barcelona, 08003 Barcelona, Spain;
| | - Greetje Vande Velde
- Department of Imaging and Pathology, KU Leuven, University of Leuven, 3000 Leuven, Belgium; (B.T.); (K.D.); (J.V.); (E.V.)
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14
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Belderbos S, González-Gómez MA, Cleeren F, Wouters J, Piñeiro Y, Deroose CM, Coosemans A, Gsell W, Bormans G, Rivas J, Himmelreich U. Simultaneous in vivo PET/MRI using fluorine-18 labeled Fe 3O 4@Al(OH) 3 nanoparticles: comparison of nanoparticle and nanoparticle-labeled stem cell distribution. EJNMMI Res 2020; 10:73. [PMID: 32607918 PMCID: PMC7326875 DOI: 10.1186/s13550-020-00655-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 06/09/2020] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Mesenchymal stem cells (MSCs) have shown potential for treatment of different diseases. However, their working mechanism is still unknown. To elucidate this, the non-invasive and longitudinal tracking of MSCs would be beneficial. Both iron oxide-based nanoparticles (Fe3O4 NPs) for magnetic resonance imaging (MRI) and radiotracers for positron emission tomography (PET) have shown potential as in vivo cell imaging agents. However, they are limited by their negative contrast and lack of spatial information as well as short half-life, respectively. In this proof-of-principle study, we evaluated the potential of Fe3O4@Al(OH)3 NPs as dual PET/MRI contrast agents, as they allow stable binding of [18F]F- ions to the NPs and thus, NP visualization and quantification with both imaging modalities. RESULTS 18F-labeled Fe3O4@Al(OH)3 NPs (radiolabeled NPs) or mouse MSCs (mMSCs) labeled with these radiolabeled NPs were intravenously injected in healthy C57Bl/6 mice, and their biodistribution was studied using simultaneous PET/MRI acquisition. While liver uptake of radiolabeled NPs was seen with both PET and MRI, mMSCs uptake in the lungs could only be observed with PET. Even some initial loss of fluoride label did not impair NPs/mMSCs visualization. Furthermore, no negative effects on blood cell populations were seen after injection of either the NPs or mMSCs, indicating good biocompatibility. CONCLUSION We present the application of novel 18F-labeled Fe3O4@Al(OH)3 NPs as safe cell tracking agents for simultaneous PET/MRI. Combining both modalities allows fast and easy NP and mMSC localization and quantification using PET at early time points, while MRI provides high-resolution, anatomic background information and long-term NP follow-up, hereby overcoming limitations of the individual imaging modalities.
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Affiliation(s)
- Sarah Belderbos
- Biomedical MRI, Department of Imaging and Pathology, KU Leuven, 3000, Leuven, Belgium
| | - Manuel Antonio González-Gómez
- NANOMAG Group, Department of Applied Physics, Technological Research Institute, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Frederik Cleeren
- Radiopharmaceutical Research, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, 3000, Leuven, Belgium
| | - Jens Wouters
- Molecular Small Animal Imaging Center (MoSAIC), KU Leuven, 3000, Leuven, Belgium
| | - Yolanda Piñeiro
- NANOMAG Group, Department of Applied Physics, Technological Research Institute, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Christophe M Deroose
- Nuclear Medicine and Molecular Imaging, Department of Imaging and Pathology, KU Leuven/UZ Leuven, 3000, Leuven, Belgium
| | - An Coosemans
- Laboratory for Tumor Immunology and Immunotherapy, ImmunOvar Research Group, Department of Oncology, Leuven Cancer Institute, KU Leuven, 3000, Leuven, Belgium.,Department of Gynaecology and Obstetrics, UZ Leuven, 3000, Leuven, Belgium
| | - Willy Gsell
- Biomedical MRI, Department of Imaging and Pathology, KU Leuven, 3000, Leuven, Belgium
| | - Guy Bormans
- Radiopharmaceutical Research, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, 3000, Leuven, Belgium
| | - Jose Rivas
- NANOMAG Group, Department of Applied Physics, Technological Research Institute, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Uwe Himmelreich
- Biomedical MRI, Department of Imaging and Pathology, KU Leuven, 3000, Leuven, Belgium.
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15
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González-Gómez MA, Belderbos S, Yañez-Vilar S, Piñeiro Y, Cleeren F, Bormans G, Deroose CM, Gsell W, Himmelreich U, Rivas J. Development of Superparamagnetic Nanoparticles Coated with Polyacrylic Acid and Aluminum Hydroxide as an Efficient Contrast Agent for Multimodal Imaging. NANOMATERIALS 2019; 9:nano9111626. [PMID: 31731823 PMCID: PMC6915788 DOI: 10.3390/nano9111626] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 11/05/2019] [Accepted: 11/08/2019] [Indexed: 02/06/2023]
Abstract
Early diagnosis of disease and follow-up of therapy is of vital importance for appropriate patient management since it allows rapid treatment, thereby reducing mortality and improving health and quality of life with lower expenditure for health care systems. New approaches include nanomedicine-based diagnosis combined with therapy. Nanoparticles (NPs), as contrast agents for in vivo diagnosis, have the advantage of combining several imaging agents that are visible using different modalities, thereby achieving high spatial resolution, high sensitivity, high specificity, morphological, and functional information. In this work, we present the development of aluminum hydroxide nanostructures embedded with polyacrylic acid (PAA) coated iron oxide superparamagnetic nanoparticles, Fe3O4@Al(OH)3, synthesized by a two-step co-precipitation and forced hydrolysis method, their physicochemical characterization and first biomedical studies as dual magnetic resonance imaging (MRI)/positron emission tomography (PET) contrast agents for cell imaging. The so-prepared NPs are size-controlled, with diameters below 250 nm, completely and homogeneously coated with an Al(OH)3 phase over the magnetite cores, superparamagnetic with high saturation magnetization value (Ms = 63 emu/g-Fe3O4), and porous at the surface with a chemical affinity for fluoride ion adsorption. The suitability as MRI and PET contrast agents was tested showing high transversal relaxivity (r2) (83.6 mM-1 s-1) and rapid uptake of 18F-labeled fluoride ions as a PET tracer. The loading stability with 18F-fluoride was tested in longitudinal experiments using water, buffer, and cell culture media. Even though the stability of the 18F-label varied, it remained stable under all conditions. A first in vivo experiment indicates the suitability of Fe3O4@Al(OH)3 nanoparticles as a dual contrast agent for sensitive short-term (PET) and high-resolution long-term imaging (MRI).
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Affiliation(s)
- Manuel Antonio González-Gómez
- Applied Physics Department, NANOMAG Laboratory, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (S.Y.-V.); (Y.P.); (J.R.)
- Correspondence: (M.A.G.-G.); (S.B.)
| | - Sarah Belderbos
- Biomedical MRI, Department of Imaging and Pathology, KU Leuven, O&N I, Herestraat 49—Box 505, 3000 Leuven, Belgium; (W.G.); (U.H.)
- Molecular Small Animal Imaging Center (MoSAIC), KU Leuven, O&N I, Herestraat 49—Box 505, 3000 Leuven, Belgium
- Correspondence: (M.A.G.-G.); (S.B.)
| | - Susana Yañez-Vilar
- Applied Physics Department, NANOMAG Laboratory, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (S.Y.-V.); (Y.P.); (J.R.)
| | - Yolanda Piñeiro
- Applied Physics Department, NANOMAG Laboratory, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (S.Y.-V.); (Y.P.); (J.R.)
| | - Frederik Cleeren
- Radiopharmaceutical Research, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, O&NII Herestraat 49—Box 821, 3000 Leuven, Belgium; (F.C.); (G.B.)
| | - Guy Bormans
- Radiopharmaceutical Research, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, O&NII Herestraat 49—Box 821, 3000 Leuven, Belgium; (F.C.); (G.B.)
| | - Christophe M. Deroose
- Molecular Small Animal Imaging Center (MoSAIC), KU Leuven, O&N I, Herestraat 49—Box 505, 3000 Leuven, Belgium
- Nuclear Medicine and Molecular Imaging, Department of Imaging and Pathology, KU Leuven/UZ Leuven, Herestraat 49—Box 7003 59, 3000 Leuven, Belgium;
| | - Willy Gsell
- Biomedical MRI, Department of Imaging and Pathology, KU Leuven, O&N I, Herestraat 49—Box 505, 3000 Leuven, Belgium; (W.G.); (U.H.)
- Molecular Small Animal Imaging Center (MoSAIC), KU Leuven, O&N I, Herestraat 49—Box 505, 3000 Leuven, Belgium
| | - Uwe Himmelreich
- Biomedical MRI, Department of Imaging and Pathology, KU Leuven, O&N I, Herestraat 49—Box 505, 3000 Leuven, Belgium; (W.G.); (U.H.)
- Molecular Small Animal Imaging Center (MoSAIC), KU Leuven, O&N I, Herestraat 49—Box 505, 3000 Leuven, Belgium
| | - José Rivas
- Applied Physics Department, NANOMAG Laboratory, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (S.Y.-V.); (Y.P.); (J.R.)
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16
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Garcia Ribeiro RS, Belderbos S, Danhier P, Gallo J, Manshian BB, Gallez B, Bañobre M, de Cuyper M, Soenen SJ, Gsell W, Himmelreich U. Targeting tumor cells and neovascularization using RGD-functionalized magnetoliposomes. Int J Nanomedicine 2019; 14:5911-5924. [PMID: 31534330 PMCID: PMC6681073 DOI: 10.2147/ijn.s214041] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 06/29/2019] [Indexed: 12/25/2022] Open
Abstract
Purpose Magnetoliposomes (MLs) have shown great potential as magnetic resonance imaging contrast agents and as delivery vehicles for cancer therapy. Targeting the MLs towards the tumor cells or neovascularization could ensure delivery of drugs at the tumor site. In this study, we evaluated the potential of MLs targeting the αvβ3 integrin overexpressed on tumor neovascularization and different tumor cell types, including glioma and ovarian cancer. Methods MLs functionalized with a Texas Red fluorophore (anionic MLs), and with the fluorophore and the cyclic Arginine-Glycine-Aspartate (cRGD; cRGD-MLs) targeting the αvβ3 integrin, were produced in-house. Swiss nude mice were subcutaneously injected with 107 human ovarian cancer SKOV-3 cells. Tumors were allowed to grow for 3 weeks before injection of anionic or cRGD-MLs. Biodistribution of MLs was followed up with a 7T preclinical magnetic resonance imaging (MRI) scanner and fluorescence imaging (FLI) right after injection, 2h, 4h, 24h and 48h post injection. Ex vivo intratumoral ML uptake was confirmed using FLI, electron paramagnetic resonance spectroscopy (EPR) and histology at different time points post injection. Results In vivo, we visualized a higher uptake of cRGD-MLs in SKOV-3 xenografts compared to control, anionic MLs with both MRI and FLI. Highest ML uptake was seen after 4h using MRI, but only after 24h using FLI indicating the lower sensitivity of this technique. Furthermore, ex vivo EPR and FLI confirmed the highest tumoral ML uptake at 4 h. Last, a Perl’s stain supported the presence of our iron-based particles in SKOV-3 xenografts. Conclusion Uptake of cRGD-MLs can be visualized using both MRI and FLI, even though the latter was less sensitive due to lower depth penetration. Furthermore, our results indicate that cRGD-MLs can be used to target SKOV-3 xenograft in Swiss nude mice. Therefore, the further development of this particles into theranostics would be of interest.
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Affiliation(s)
- Rita Sofia Garcia Ribeiro
- Biomedical MRI/MoSAIC, Department of Imaging and Pathology, Biomedical Sciences Group, Leuven B-3000, Belgium
| | - Sarah Belderbos
- Biomedical MRI/MoSAIC, Department of Imaging and Pathology, Biomedical Sciences Group, Leuven B-3000, Belgium
| | - Pierre Danhier
- Biomedical Magnetic Resonance Research Group, Louvain Drug Research Institute, Université Catholique De Louvain, Brussels B-1200, Belgium
| | - Juan Gallo
- Biomedical Magnetic Resonance Research Group, Louvain Drug Research Institute, Université Catholique De Louvain, Brussels B-1200, Belgium
| | - Bella B Manshian
- Biomedical MRI/MoSAIC, Department of Imaging and Pathology, Biomedical Sciences Group, Leuven B-3000, Belgium
| | - Bernard Gallez
- Biomedical Magnetic Resonance Research Group, Louvain Drug Research Institute, Université Catholique De Louvain, Brussels B-1200, Belgium
| | - Manuel Bañobre
- Diagnostic Tools and Methods/Advanced (Magnetic) Theranostic Nanostructures Lab, International Iberian Nanotechnology Laboratory (INL), PT-Braga 4715-330, Portugal
| | - Marcel de Cuyper
- Laboratory of Bionanocolloids, Interdisciplinary Research Centre, KULAK/KU Leuven, Kortrijk B-8500, Belgium
| | - Stefaan J Soenen
- Biomedical MRI/MoSAIC, Department of Imaging and Pathology, Biomedical Sciences Group, Leuven B-3000, Belgium
| | - Willy Gsell
- Biomedical MRI/MoSAIC, Department of Imaging and Pathology, Biomedical Sciences Group, Leuven B-3000, Belgium
| | - Uwe Himmelreich
- Biomedical MRI/MoSAIC, Department of Imaging and Pathology, Biomedical Sciences Group, Leuven B-3000, Belgium
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17
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Saini S, Korf H, Liang S, Verbeke R, Manshian B, Raemdonck K, Lentacker I, Gysemans C, De Smedt SC, Himmelreich U. Challenges for labeling and longitudinal tracking of adoptively transferred autoreactive T lymphocytes in an experimental type-1 diabetes model. MAGNETIC RESONANCE MATERIALS IN PHYSICS BIOLOGY AND MEDICINE 2019; 32:295-305. [PMID: 30648196 DOI: 10.1007/s10334-018-0720-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 11/20/2018] [Indexed: 12/26/2022]
Abstract
OBJECTIVE Tracking the autoreactive T-cell migration in the pancreatic region after labeling with fluorinated nanoparticles (1,2-dioleoyl-sn-glycero-3-phosphoethanolamine-N-[3-(2-pyridyldithio)propionate]-perfluoro-15-crown-5-ether nanoparticles, PDP-PFCE NPs) in a diabetic murine model using 19F MRI. MATERIALS AND METHODS Synthesis of novel PDP-PFCE fluorine tracer was performed for in vitro labeling of T cells. Labeling conditions were optimized using different PDP-PFCE NPs concentrations. For in vivo 19F MRI, mice were longitudinally followed after adoptive transfer of activated, autoreactive, labeled T cells in NOD.SCID mice. RESULTS Established MR protocols were used for challenging T cell labeling to track inflammation in a model of diabetes after successful labeling of CD4+ and CD8+ T cells with PDP-PFCE NPs. However, T cells were difficult to be detected in vivo after their engraftment in animals. DISCUSSION We showed successful in vitro labeling of T cells using novel fluorinated liposomal nanoparticles. However, insufficient and slow accumulation of labeled T cells and subsequent T cell proliferation in the pancreatic region remains as limitations of in vivo cell imaging by 19F MRI.
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Affiliation(s)
- Shweta Saini
- Biomedical MRI/MoSAIC, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
| | - Hannelie Korf
- Laboratory of Hepatology, CHROMETA Department, KU Leuven, Leuven, Belgium
| | | | - Rein Verbeke
- Ghent Research Group on Nanomedicines, Ghent University, Ghent, Belgium
| | - Bella Manshian
- Biomedical MRI/MoSAIC, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
| | - Koen Raemdonck
- Ghent Research Group on Nanomedicines, Ghent University, Ghent, Belgium
| | - Ine Lentacker
- Ghent Research Group on Nanomedicines, Ghent University, Ghent, Belgium
| | - Conny Gysemans
- Clinical and Experimental Endocrinology, KU Leuven, Leuven, Belgium
| | | | - Uwe Himmelreich
- Biomedical MRI/MoSAIC, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium.
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18
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Abstract
Cells expressing suicide genes can be used as therapeutic vehicles for difficult-to-treat tumors, for example, if stem cells are used that are able to track infiltrating tumor cells. An alternative application of suicide gene expression is their use as a safety switch in regenerative medicine where the presence of a few pluripotent stem cells could potentially cause unwanted side effects like the formation of teratoma. One potential bottleneck of these applications is that information on the initiation of cell suicide is needed early on, for example, when therapeutic cells have reached infiltrating tumor cells or when teratomas are formed. Therefore, in vivo imaging methods are needed that provide information on target location, (stem) cell location, (stem) cell viability, pathology, and suicide gene expression. This requires multimodal imaging approaches that can provide this information longitudinally and in a noninvasive way. Here, we describe examples of how therapeutic cells can be modified so that they express a suicide gene and genes that can be used for in vivo visualization.
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19
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Ariji Y, Ariji E, Nakashima M, Iohara K. Magnetic resonance imaging in endodontics: a literature review. Oral Radiol 2018; 34:10-16. [PMID: 30484095 DOI: 10.1007/s11282-017-0301-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 07/20/2017] [Indexed: 12/16/2022]
Abstract
OBJECTIVES Magnetic resonance imaging (MRI) has recently been used for the evaluation of dental pulp anatomy, vitality, and regeneration. This study reviewed the recent use of MRI in the endodontic field. METHODS Literature published from January 2000 to March 2017 was searched in PubMed using the following Medical Subject Heading (MeSH) terms: (1) MRI and (dental pulp anatomy or endodontic pulp); (2) MRI and dental pulp regeneration. Studies were narrowed down based on specific inclusion criteria and categorized as in vitro, in vivo, or dental pulp regeneration studies. The MRI sequences and imaging findings were summarized. RESULTS In the in vitro studies on dental pulp anatomy, T1-weighted imaging with high resolution was frequently used to evaluate dental pulp morphology, demineralization depth, and tooth abnormalities. Other sequences such as apparent diffusion coefficient mapping and sweep imaging with Fourier transformation were used to evaluate pulpal fluid and decayed teeth, and short-T2 tissues (dentin and enamel), respectively. In the in vivo studies, pulp vitality and reperfusion were visible with fat-saturated T2-weighted imaging or contrast-enhanced T1-weighted imaging. In both the in vitro and in vivo studies, MRI could reveal pulp regeneration after stem cell therapy. Stem cells labeled with superparamagnetic iron oxide particles were also visible on MRI. Angiogenesis induced by stem cells could be confirmed on enhanced T1-weighted imaging. CONCLUSION MRI can be successfully used to visualize pulp morphology as well as pulp vitality and regeneration. The use of MRI in the endodontic field is likely to increase in the future.
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Affiliation(s)
- Yoshiko Ariji
- Department of Oral and Maxillofacial Radiology, Aichi-Gakuin University School of Dentistry, 2-11 Suemori-dori, Chikusa-ku, Nagoya, 464-8651, Japan.
| | - Eiichiro Ariji
- Department of Oral and Maxillofacial Radiology, Aichi-Gakuin University School of Dentistry, 2-11 Suemori-dori, Chikusa-ku, Nagoya, 464-8651, Japan
| | - Misako Nakashima
- Department of Stem Cell Biology and Regenerative Medicine, National Center for Geriatrics and Gerontology, Research Institute, 7-430 Morioka-cho, Obu, 474-8511, Japan
| | - Koichiro Iohara
- Department of Stem Cell Biology and Regenerative Medicine, National Center for Geriatrics and Gerontology, Research Institute, 7-430 Morioka-cho, Obu, 474-8511, Japan
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Grunert B, Saatz J, Hoffmann K, Appler F, Lubjuhn D, Jakubowski N, Resch-Genger U, Emmerling F, Briel A. Multifunctional Rare-Earth Element Nanocrystals for Cell Labeling and Multimodal Imaging. ACS Biomater Sci Eng 2018; 4:3578-3587. [DOI: 10.1021/acsbiomaterials.8b00495] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
| | - Jessica Saatz
- Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Straße 11, 12489 Berlin, Germany
| | - Katrin Hoffmann
- Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Straße 11, 12489 Berlin, Germany
| | | | - Dominik Lubjuhn
- Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Straße 11, 12489 Berlin, Germany
| | - Norbert Jakubowski
- Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Straße 11, 12489 Berlin, Germany
| | - Ute Resch-Genger
- Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Straße 11, 12489 Berlin, Germany
| | - Franziska Emmerling
- Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Straße 11, 12489 Berlin, Germany
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21
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Garcia Ribeiro RS, Gysemans C, da Cunha JPMCM, Manshian BB, Jirak D, Kriz J, Gallo J, Bañobre-López M, Struys T, De Cuyper M, Mathieu C, Soenen SJ, Gsell W, Himmelreich U. Magnetoliposomes as Contrast Agents for Longitudinal in vivo Assessment of Transplanted Pancreatic Islets in a Diabetic Rat Model. Sci Rep 2018; 8:11487. [PMID: 30065302 PMCID: PMC6068133 DOI: 10.1038/s41598-018-29136-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 06/12/2018] [Indexed: 01/07/2023] Open
Abstract
Magnetoliposomes (MLs) were synthesized and tested for longitudinal monitoring of transplanted pancreatic islets using magnetic resonance imaging (MRI) in rat models. The rat insulinoma cell line INS-1E and isolated pancreatic islets from outbred and inbred rats were used to optimize labeling conditions in vitro. Strong MRI contrast was generated by islets exposed to 50 µg Fe/ml for 24 hours without any increased cell death, loss of function or other signs of toxicity. In vivo experiments showed that pancreatic islets (50-1000 units) labeled with MLs were detectable for up to 6 weeks post-transplantation in the kidney subcapsular space. Islets were also monitored for two weeks following transplantation through the portal vein of the liver. Hereby, islets labeled with MLs and transplanted under the left kidney capsule were able to correct hyperglycemia and had stable MRI signals until nephrectomy. Interestingly, in vivo MRI of streptozotocin induced diabetic rats transplanted with allogeneic islets demonstrated loss of MRI contrast between 7-16 days, indicative of loss of islet structure. MLs used in this study were not only beneficial for monitoring the location of transplanted islets in vivo with high sensitivity but also reported on islet integrity and hereby indirectly on islet function and rejection.
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Affiliation(s)
- Rita Sofia Garcia Ribeiro
- Biomedical MRI/MoSAIC, Department of Imaging and Pathology, Biomedical Sciences Group, KU LEUVEN, Herestraat 49, 3000, Leuven, Belgium
| | - Conny Gysemans
- Clinical and Experimental Endocrinology, Department of Chronic Diseases, Metabolism and Ageing, KU LEUVEN, Herestraat 49, 3000, Leuven, Belgium
| | | | - Bella B Manshian
- Biomedical MRI/MoSAIC, Department of Imaging and Pathology, Biomedical Sciences Group, KU LEUVEN, Herestraat 49, 3000, Leuven, Belgium
| | - Daniel Jirak
- MR Spectroscopy Unit, Institute for Clinical and Experimental Medicine (IKEM), Videnska 1958/9, 140 21, Prague, Czech Republic
- Department of Biophysics, Institute of Biophysics and Informatics, First Faculty of Medicine, Charles University, Salmovska 1, 120 00, Prague 2, Czech Republic
| | - Jan Kriz
- Diabetes Center, Institute for Clinical and Experimental Medicine (IKEM), Videnska 1958/9, 140 21, Prague, Czech Republic
| | - Juan Gallo
- Diagnostic Tools & Methods/Advanced (magnetic) Theranostic Nanostructures Lab, International Iberian Nanotechnology Laboratory (INL), Av. Mestre José Veiga s/n, 4715-330, Braga, Portugal
| | - Manuel Bañobre-López
- Diagnostic Tools & Methods/Advanced (magnetic) Theranostic Nanostructures Lab, International Iberian Nanotechnology Laboratory (INL), Av. Mestre José Veiga s/n, 4715-330, Braga, Portugal
| | - Tom Struys
- Lab of Histology, Biomedical Research Institute, Hasselt University, Campus Diepenbeek, Agoralaan, B3590, Diepenbeek, Belgium
| | - Marcel De Cuyper
- Laboratory of BioNanoColloids, Interdisciplinary Research Centre, KULAK/KU LEUVEN, Etienne Sabbelaan 53, 8500, Kortrijk, Belgium
| | - Chantal Mathieu
- Clinical and Experimental Endocrinology, Department of Chronic Diseases, Metabolism and Ageing, KU LEUVEN, Herestraat 49, 3000, Leuven, Belgium
| | - Stefaan J Soenen
- Biomedical MRI/MoSAIC, Department of Imaging and Pathology, Biomedical Sciences Group, KU LEUVEN, Herestraat 49, 3000, Leuven, Belgium
| | - Willy Gsell
- Biomedical MRI/MoSAIC, Department of Imaging and Pathology, Biomedical Sciences Group, KU LEUVEN, Herestraat 49, 3000, Leuven, Belgium
| | - Uwe Himmelreich
- Biomedical MRI/MoSAIC, Department of Imaging and Pathology, Biomedical Sciences Group, KU LEUVEN, Herestraat 49, 3000, Leuven, Belgium.
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22
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Neyrinck K, Breuls N, Holvoet B, Oosterlinck W, Wolfs E, Vanbilloen H, Gheysens O, Duelen R, Gsell W, Lambrichts I, Himmelreich U, Verfaillie CM, Sampaolesi M, Deroose CM. The human somatostatin receptor type 2 as an imaging and suicide reporter gene for pluripotent stem cell-derived therapy of myocardial infarction. Am J Cancer Res 2018; 8:2799-2813. [PMID: 29774076 PMCID: PMC5957010 DOI: 10.7150/thno.22980] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Accepted: 02/28/2018] [Indexed: 12/12/2022] Open
Abstract
Rationale: Pluripotent stem cells (PSCs) are being investigated as a cell source for regenerative medicine since they provide an infinitive pool of cells that are able to differentiate towards every cell type of the body. One possible therapeutic application involves the use of these cells to treat myocardial infarction (MI), a condition where billions of cardiomyocytes (CMs) are lost. Although several protocols have been developed to differentiate PSCs towards CMs, none of these provide a completely pure population, thereby still posing a risk for neoplastic teratoma formation. Therefore, we developed a strategy to (i) monitor cell behavior noninvasively via site-specific integration of firefly luciferase (Fluc) and the human positron emission tomography (PET) imaging reporter genes, sodium iodide symporter (hNIS) and somatostatin receptor type 2 (hSSTr2), and (ii) perform hSSTr2-mediated suicide gene therapy via the clinically used radiopharmacon 177Lu-DOTATATE. Methods: Human embryonic stem cells (ESCs) were gene-edited via zinc finger nucleases to express Fluc and either hNIS or hSSTr2 in the safe harbor locus, adeno-associated virus integration site 1. Firstly, these cells were exposed to 4.8 MBq 177Lu-DOTATATE in vitro and cell survival was monitored via bioluminescence imaging (BLI). Afterwards, hNIS+ and hSSTr2+ ESCs were transplanted subcutaneously and teratomas were allowed to form. At day 59, baseline 124I and 68Ga-DOTATATE PET and BLI scans were performed. The day after, animals received either saline or 55 MBq 177Lu-DOTATATE. Weekly BLI scans were performed, accompanied by 124I and 68Ga-DOTATATE PET scans at days 87 and 88, respectively. Finally, hSSTr2+ ESCs were differentiated towards CMs and transplanted intramyocardially in the border zone of an infarct that was induced by left anterior descending coronary artery ligation. After transplantation, the animals were monitored via BLI and PET, while global cardiac function was evaluated using cardiac magnetic resonance imaging. Results: Teratoma growth of both hNIS+ and hSSTr2+ ESCs could be followed noninvasively over time by both PET and BLI. After 177Lu-DOTATATE administration, successful cell killing of the hSSTr2+ ESCs was achieved both in vitro and in vivo, indicated by reductions in total tracer lesion uptake, BLI signal and teratoma volume. As undifferentiated hSSTr2+ ESCs are not therapeutically relevant, they were differentiated towards CMs and injected in immune-deficient mice with a MI. Long-term cell survival could be monitored without uncontrolled cell proliferation. However, no improvement in the left ventricular ejection fraction was observed. Conclusion: We developed isogenic hSSTr2-expressing ESCs that allow noninvasive cell monitoring in the context of PSC-derived regenerative therapy. Furthermore, we are the first to use the hSSTr2 not only as an imaging reporter gene, but also as a suicide mechanism for radionuclide therapy in the setting of PSC-derived cell treatment.
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Ferrauto G, Di Gregorio E, Delli Castelli D, Aime S. CEST-MRI studies of cells loaded with lanthanide shift reagents. Magn Reson Med 2018. [PMID: 29516549 DOI: 10.1002/mrm.27157] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
PURPOSE Magnetic resonance imaging has been used extensively to track in vivo implanted cells that have been previously labeled with relaxation enhancers. However, this approach is not suitable to track multiple cell populations, as it may lead to confounding results in case the contrast agent is released from the labeled cells. This paper demonstrates how the use of CEST agents can overcome these issues. After encapsulating paramagnetic lanthanide shift reagents, we may shift the absorption frequency of the intracellular water resonance (δIn ), thus generating frequency-encoding CEST responsive cells that can be visualized in the MR image by applying the proper RF irradiation. METHODS Eu-HPDO3A, Dy-HPDO3A, and Tm-HPDO3A were used as shift reagents for labeling murine breast cancer cells and murine macrophages by hypotonic swelling and pinocytosis. The CEST-MR images were acquired at 7 T, and the saturation transfer effect was measured. Samples at different dilution of cells were analyzed to quantify the detection threshold. In vitro experiments of cell proliferation were carried out. Finally, murine breast cancer cells were injected subcutaneously in mice, and MR images were acquired to assess the proliferation index in vivo. RESULTS It was found that entrapment of the paramagnetic complexes into endosomes (i.e., using the pinocytosis route) leads to an enhanced shift of the intracellular water resonance. δIn appears to be proportional to the effective magnetic moment (μeff ) and to the concentration of the loaded lanthanide complex. Moreover, a higher shift is present when the complexes are entrapped in the endosomes. The cell proliferation index was assessed both in vitro and in vivo by evaluating the reduction of δIn value in the days after the cell labeling. CONCLUSION Cells can be visualized by CEST MRI after loading with paramagnetic shift reagent, by exploiting the large ensemble of the properly shifted intracellular water molecules. A better performance is obtained when the complexes are entrapped inside the endosomes. The observed (δIn ) value is strongly correlated to the chemical nature of the probe, and to its concentration and cellular localization. Two applications of this method are reported in this paper: (1) for in vivo cell visualization and (2) for the monitoring of the cellular proliferation process, as this method is accompanied by a change in δIn that may be exploited as a longitudinal reporter of the proliferation rate.
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Affiliation(s)
- Giuseppe Ferrauto
- Molecular Imaging Center, Department of Molecular Biotechnologies and Health Sciences, University of Torino, Italy
| | - Enza Di Gregorio
- Molecular Imaging Center, Department of Molecular Biotechnologies and Health Sciences, University of Torino, Italy
| | - Daniela Delli Castelli
- Molecular Imaging Center, Department of Molecular Biotechnologies and Health Sciences, University of Torino, Italy
| | - Silvio Aime
- Molecular Imaging Center, Department of Molecular Biotechnologies and Health Sciences, University of Torino, Italy
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Slavcev RA, Sum CH, St Jean J, Huh H, Nafissi N. Specific Systems for Evaluation. EXPERIENTIA SUPPLEMENTUM (2012) 2018; 110:99-123. [PMID: 30536228 DOI: 10.1007/978-3-319-78259-1_4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Fluorescent-based visualization techniques have long been used to monitor biological activity. This chapter explores the delivery of reporter genes as a means to assay and track activity in biological systems. Bioluminescence is the production of light due to biochemical processes. By encoding genes for bioluminescence, biological processes can be visualized based on gene expression. This chapter also discusses the primary applications of bioluminescence as seen through bioluminescent imaging techniques, flow cytometry, and PCR-based methods of gene detection. These techniques are described in terms of researching gene expression, cancer therapy, and protein interactions.
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Affiliation(s)
| | - Chi Hong Sum
- University of Waterloo, School of Pharmacy, Waterloo, ON, Canada
| | - Jesse St Jean
- University of Waterloo, School of Pharmacy, Waterloo, ON, Canada
| | - Haein Huh
- University of Waterloo, School of Pharmacy, Waterloo, ON, Canada
| | - Nafiseh Nafissi
- University of Waterloo, School of Pharmacy, Waterloo, ON, Canada
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Yan L, Da H, Zhang S, López VM, Wang W. Bacterial magnetosome and its potential application. Microbiol Res 2017; 203:19-28. [PMID: 28754204 DOI: 10.1016/j.micres.2017.06.005] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Revised: 06/08/2017] [Accepted: 06/17/2017] [Indexed: 01/01/2023]
Abstract
Bacterial magnetosome, synthetized by magnetosome-producing microorganisms including magnetotactic bacteria (MTB) and some non-magnetotactic bacteria (Non-MTB), is a new type of material comprising magnetic nanocrystals surrounded by a phospholipid bilayer. Because of the special properties such as single magnetic domain, excellent biocompatibility and surface modification, bacterial magnetosome has become an increasingly attractive for researchers in biology, medicine, paleomagnetism, geology and environmental science. This review briefly describes the general feature of magnetosome-producing microorganisms. This article also highlights recent advances in the understanding of the biochemical and magnetic characteristics of bacterial magnetosome, as well as the magnetosome formation mechanism including iron ions uptake, magnetosome membrane formation, biomineralization and magnetosome chain assembly. Finally, this review presents the potential applications of bacterial magnetosome in biomedicine, wastewater treatment, and the significance of mineralization of magnetosome in biology and geology.
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Affiliation(s)
- Lei Yan
- Heilongjiang Provincial Key Laboratory of Environmental Microbiology and Recycling of Argo-Waste in Cold Region, College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, 163319, PR China.
| | - Huiyun Da
- Heilongjiang Provincial Key Laboratory of Environmental Microbiology and Recycling of Argo-Waste in Cold Region, College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, 163319, PR China
| | - Shuang Zhang
- Heilongjiang Provincial Key Laboratory of Environmental Microbiology and Recycling of Argo-Waste in Cold Region, College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, 163319, PR China
| | - Viviana Morillo López
- School of Life Sciences, University of Nevada at Las Vegas, Las Vegas, NV 89154, USA
| | - Weidong Wang
- Heilongjiang Provincial Key Laboratory of Environmental Microbiology and Recycling of Argo-Waste in Cold Region, College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, 163319, PR China
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Lu CW, Hsiao JK, Liu HM, Wu CH. Characterization of an iron oxide nanoparticle labelling and MRI-based protocol for inducing human mesenchymal stem cells into neural-like cells. Sci Rep 2017; 7:3587. [PMID: 28620162 PMCID: PMC5472606 DOI: 10.1038/s41598-017-03863-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 05/04/2017] [Indexed: 12/13/2022] Open
Abstract
The aim of the current study was to develop an iron oxide nanoparticle (ION) labelling and magnetic resonance imaging (MRI)-based protocol to allow visualization of the differentiation process of mesenchymal stem cells (MSCs) into neural-like cells (NCs) in vitro. Ferucarbotran, a clinically available ION, which can be visualized under MRI, is used for tracking cells implanted in vivo. The NCs were verified morphologically and histologically by light microscopy, and their functions were verified by measuring their action potentials. Conformational conversion of axon-like structures was observed under light microscopy. These NCs exhibited frequent, active action potentials compared with cells that did not undergo neural differentiation. The labelling of ION had no influence on the morphological and functional differentiation capacity of the MSCs. We conclude that the MSCs that were differentiated into NCs exhibited in vitro activity potential firing and may be used to replace damaged neurons.
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Affiliation(s)
- Chen-Wen Lu
- Department of Life Science, National Taiwan Normal University, Taipei, 10677, Taiwan.,Department of Medical Imaging, Taipei TzuChi Hospital, The Buddhist TzuChi Medical Foundation, New Taipei City, 23142, Taiwan
| | - Jong-Kai Hsiao
- Department of Medical Imaging, Taipei TzuChi Hospital, The Buddhist TzuChi Medical Foundation, New Taipei City, 23142, Taiwan
| | - Hon-Man Liu
- Department of Medical Imaging, National Taiwan University Hospital, Taipei, 10048, Taiwan.
| | - Chung-Hsin Wu
- Department of Life Science, National Taiwan Normal University, Taipei, 10677, Taiwan.
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Evaluation of Magnetic Nanoparticle-Labeled Chondrocytes Cultivated on a Type II Collagen-Chitosan/Poly(Lactic-co-Glycolic) Acid Biphasic Scaffold. Int J Mol Sci 2017; 18:ijms18010087. [PMID: 28054960 PMCID: PMC5297721 DOI: 10.3390/ijms18010087] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 12/26/2016] [Accepted: 12/29/2016] [Indexed: 02/05/2023] Open
Abstract
Chondral or osteochondral defects are still controversial problems in orthopedics. Here, chondrocytes labeled with magnetic nanoparticles were cultivated on a biphasic, type II collagen-chitosan/poly(lactic-co-glycolic acid) scaffold in an attempt to develop cultures with trackable cells exhibiting growth, differentiation, and regeneration. Rabbit chondrocytes were labeled with magnetic nanoparticles and characterized by scanning electron microscopy (SEM), transmission electron (TEM) microscopy, and gene and protein expression analyses. The experimental results showed that the magnetic nanoparticles did not affect the phenotype of chondrocytes after cell labeling, nor were protein and gene expression affected. The biphasic type II collagen-chitosan/poly(lactic-co-glycolic) acid scaffold was characterized by SEM, and labeled chondrocytes showed a homogeneous distribution throughout the scaffold after cultivation onto the polymer. Cellular phenotype remained unaltered but with increased gene expression of type II collagen and aggrecan, as indicated by cell staining, indicating chondrogenesis. Decreased SRY-related high mobility group-box gene (Sox-9) levels of cultured chondrocytes indicated that differentiation was associated with osteogenesis. These results are encouraging for the development of techniques for trackable cartilage regeneration and osteochondral defect repair which may be applied in vivo and, eventually, in clinical trials.
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Xiong R, Joris F, Liang S, De Rycke R, Lippens S, Demeester J, Skirtach A, Raemdonck K, Himmelreich U, De Smedt SC, Braeckmans K. Cytosolic Delivery of Nanolabels Prevents Their Asymmetric Inheritance and Enables Extended Quantitative in Vivo Cell Imaging. NANO LETTERS 2016; 16:5975-5986. [PMID: 27684962 DOI: 10.1021/acs.nanolett.6b01411] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Long-term in vivo imaging of cells is crucial for the understanding of cellular fate in biological processes in cancer research, immunology, or in cell-based therapies such as beta cell transplantation in type I diabetes or stem cell therapy. Traditionally, cell labeling with the desired contrast agent occurs ex vivo via spontaneous endocytosis, which is a variable and slow process that requires optimization for each particular label-cell type combination. Following endocytic uptake, the contrast agents mostly remain entrapped in the endolysosomal compartment, which leads to signal instability, cytotoxicity, and asymmetric inheritance of the labels upon cell division. Here, we demonstrate that these disadvantages can be circumvented by delivering contrast agents directly into the cytoplasm via vapor nanobubble photoporation. Compared to classic endocytic uptake, photoporation resulted in 50 and 3 times higher loading of fluorescent dextrans and quantum dots, respectively, with improved signal stability and reduced cytotoxicity. Most interestingly, cytosolic delivery by photoporation prevented asymmetric inheritance of labels by daughter cells over subsequent cell generations. Instead, unequal inheritance of endocytosed labels resulted in a dramatic increase in polydispersity of the amount of labels per cell with each cell division, hindering accurate quantification of cell numbers in vivo over time. The combined benefits of cell labeling by photoporation resulted in a marked improvement in long-term cell visibility in vivo where an insulin producing cell line (INS-1E cell line) labeled with fluorescent dextrans could be tracked for up to two months in Swiss nude mice compared to 2 weeks for cells labeled by endocytosis.
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Affiliation(s)
- Ranhua Xiong
- Laboratory of General Biochemistry and Physical Pharmacy, Ghent University , 9000 Ghent, Belgium
- Centre for Nano- and Biophotonics, Ghent University , 9000 Ghent, Belgium
| | - Freya Joris
- Laboratory of General Biochemistry and Physical Pharmacy, Ghent University , 9000 Ghent, Belgium
| | - Sayuan Liang
- Biomedical NMR Unit, Faculty of Medicine, Katholieke Universiteit Leuven , 3000 Leuven, Belgium
| | - Riet De Rycke
- Inflammation Research Center, Image Core Facility, VIB , 9052 Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University , 9052 Ghent, Belgium
| | - Saskia Lippens
- Inflammation Research Center, Image Core Facility, VIB , 9052 Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University , 9052 Ghent, Belgium
| | - Jo Demeester
- Laboratory of General Biochemistry and Physical Pharmacy, Ghent University , 9000 Ghent, Belgium
| | - Andre Skirtach
- Department of Molecular Biotechnology, Ghent University , 9000 Ghent, Belgium
- Max-Planck Institute of Colloids and Interfaces , 14424 Potsdam, Germany
| | - Koen Raemdonck
- Laboratory of General Biochemistry and Physical Pharmacy, Ghent University , 9000 Ghent, Belgium
| | - Uwe Himmelreich
- Biomedical NMR Unit, Faculty of Medicine, Katholieke Universiteit Leuven , 3000 Leuven, Belgium
| | - Stefaan C De Smedt
- Laboratory of General Biochemistry and Physical Pharmacy, Ghent University , 9000 Ghent, Belgium
| | - Kevin Braeckmans
- Laboratory of General Biochemistry and Physical Pharmacy, Ghent University , 9000 Ghent, Belgium
- Centre for Nano- and Biophotonics, Ghent University , 9000 Ghent, Belgium
- Univ Lille 1, Univ Lille Nord France, IEMN, UMR 8520, 59652 Villeneuve Dascq, France
- Univ Lille 1, Univ Lille Nord France, Lab Phys Lasers Atomes & Mol, UMR 8523, 59655 Villeneuve Dascq, France
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Liang S, Louchami K, Kolster H, Jacobsen A, Zhang Y, Thimm J, Sener A, Thiem J, Malaisse W, Dresselaers T, Himmelreich U. In vivo and ex vivo 19-fluorine magnetic resonance imaging and spectroscopy of beta-cells and pancreatic islets using GLUT-2 specific contrast agents. CONTRAST MEDIA & MOLECULAR IMAGING 2016; 11:506-513. [PMID: 27624753 DOI: 10.1002/cmmi.1712] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Revised: 08/01/2016] [Accepted: 08/02/2016] [Indexed: 12/26/2022]
Abstract
The assessment of the β-cell mass in experimental models of diabetes and ultimately in patients is a hallmark to understand the relationship between reduced β-cell mass/function and the onset of diabetes. It has been shown before that the GLUT-2 transporter is highly expressed in both β-cells and hepatocytes and that D-mannoheptulose (DMH) has high uptake specificity for the GLUT-2 transporter. As 19-fluorine MRI has emerged as a new alternative method for MRI cell tracking because it provides potential non-invasive localization and quantification of labeled cells, the purpose of this project is to validate β-cell and pancreatic islet imaging by using fluorinated, GLUT-2 targeting mannoheptulose derivatives (19 FMH) both in vivo and ex vivo. In this study, we confirmed that, similar to DMH, 19 FMHs inhibit insulin secretion and increase the blood glucose level in mice temporarily (approximately two hours). We were able to assess the distribution of 19 FMHs in vivo with a temporal resolution of about 20 minutes, which showed a quick removal of 19 FMH from the circulation (within two hours). Ex vivo MR spectroscopy confirmed a preferential uptake of 19 FMH in tissue with high expression of the GLUT-2 transporter, such as liver, endocrine pancreas and kidney. No indication of further metabolism was found. In summary, 19 FMHs are potentially suitable for visualizing and tracking of GLUT-2 expressed cells. However, current bottlenecks of this technique related to the quick clearance of the compound and relative low sensitivity of 19 F MRI need to be overcome. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Sayuan Liang
- Biomedical MRI unit/ MoSAIC, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
| | - Karim Louchami
- Biomedical MRI unit/ MoSAIC, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium.,Laboratory of Experimental Hormonology, Université Libre de Bruxelles, Bruxelles, Belgium
| | - Hauke Kolster
- Biomedical MRI unit/ MoSAIC, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
| | - Anna Jacobsen
- Department of Chemistry, Faculty of Science, University of Hamburg, Hamburg, Germany
| | - Ying Zhang
- Laboratory of Experimental Hormonology, Université Libre de Bruxelles, Bruxelles, Belgium
| | - Julian Thimm
- Department of Chemistry, Faculty of Science, University of Hamburg, Hamburg, Germany
| | - Abdullah Sener
- Laboratory of Experimental Hormonology, Université Libre de Bruxelles, Bruxelles, Belgium
| | - Joachim Thiem
- Department of Chemistry, Faculty of Science, University of Hamburg, Hamburg, Germany
| | - Willy Malaisse
- Laboratory of Experimental Hormonology, Université Libre de Bruxelles, Bruxelles, Belgium
| | - Tom Dresselaers
- Biomedical MRI unit/ MoSAIC, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
| | - Uwe Himmelreich
- Biomedical MRI unit/ MoSAIC, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
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Dzien P, Tee S, Kettunen MI, Lyons SK, Larkin TJ, Timm KN, Hu D, Wright A, Rodrigues TB, Serrao EM, Marco‐Rius I, Mannion E, D'Santos P, Kennedy BWC, Brindle KM. (13) C magnetic resonance spectroscopy measurements with hyperpolarized [1-(13) C] pyruvate can be used to detect the expression of transgenic pyruvate decarboxylase activity in vivo. Magn Reson Med 2016; 76:391-401. [PMID: 26388418 PMCID: PMC5025726 DOI: 10.1002/mrm.25879] [Citation(s) in RCA: 8] [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: 06/01/2015] [Revised: 07/15/2015] [Accepted: 07/16/2015] [Indexed: 12/03/2022]
Abstract
PURPOSE Dissolution dynamic nuclear polarization can increase the sensitivity of the (13) C magnetic resonance spectroscopy experiment by at least four orders of magnitude and offers a novel approach to the development of MRI gene reporters based on enzymes that metabolize (13) C-labeled tracers. We describe here a gene reporter based on the enzyme pyruvate decarboxylase (EC 4.1.1.1), which catalyzes the decarboxylation of pyruvate to produce acetaldehyde and carbon dioxide. METHODS Pyruvate decarboxylase from Zymomonas mobilis (zmPDC) and a mutant that lacked enzyme activity were expressed using an inducible promoter in human embryonic kidney (HEK293T) cells. Enzyme activity was measured in the cells and in xenografts derived from the cells using (13) C MRS measurements of the conversion of hyperpolarized [1-(13) C] pyruvate to H(13) CO3-. RESULTS Induction of zmPDC expression in the cells and in the xenografts derived from them resulted in an approximately two-fold increase in the H(13) CO3-/[1-(13) C] pyruvate signal ratio following intravenous injection of hyperpolarized [1-(13) C] pyruvate. CONCLUSION We have demonstrated the feasibility of using zmPDC as an in vivo reporter gene for use with hyperpolarized (13) C MRS. Magn Reson Med 76:391-401, 2016. © 2015 The Authors. Magnetic Resonance in Medicine published by Wiley Periodicals, Inc. on behalf of International Society for Magnetic Resonance in Medicine. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
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Affiliation(s)
- Piotr Dzien
- Department of BiochemistryUniversity of CambridgeCambridgeUK
- Cancer Research UK, Cambridge Research Institute, Li Ka Shing CentreCambridgeUK.
| | - Sui‐Seng Tee
- Department of BiochemistryUniversity of CambridgeCambridgeUK
- Cancer Research UK, Cambridge Research Institute, Li Ka Shing CentreCambridgeUK.
| | - Mikko I. Kettunen
- Department of BiochemistryUniversity of CambridgeCambridgeUK
- Cancer Research UK, Cambridge Research Institute, Li Ka Shing CentreCambridgeUK.
- Present address: A. I. Virtanen Institute for Molecular Sciences, University of Eastern FinlandNeulaniementieKuopioFinland.
| | - Scott K. Lyons
- Department of BiochemistryUniversity of CambridgeCambridgeUK
- Cancer Research UK, Cambridge Research Institute, Li Ka Shing CentreCambridgeUK.
| | | | - Kerstin N. Timm
- Department of BiochemistryUniversity of CambridgeCambridgeUK
| | - De‐En Hu
- Department of BiochemistryUniversity of CambridgeCambridgeUK
- Cancer Research UK, Cambridge Research Institute, Li Ka Shing CentreCambridgeUK.
| | - Alan Wright
- Cancer Research UK, Cambridge Research Institute, Li Ka Shing CentreCambridgeUK.
| | - Tiago B. Rodrigues
- Department of BiochemistryUniversity of CambridgeCambridgeUK
- Cancer Research UK, Cambridge Research Institute, Li Ka Shing CentreCambridgeUK.
| | - Eva M. Serrao
- Department of BiochemistryUniversity of CambridgeCambridgeUK
- Cancer Research UK, Cambridge Research Institute, Li Ka Shing CentreCambridgeUK.
| | | | - Elizabeth Mannion
- Cancer Research UK, Cambridge Research Institute, Li Ka Shing CentreCambridgeUK.
| | - Paula D'Santos
- Cancer Research UK, Cambridge Research Institute, Li Ka Shing CentreCambridgeUK.
| | | | - Kevin M. Brindle
- Department of BiochemistryUniversity of CambridgeCambridgeUK
- Cancer Research UK, Cambridge Research Institute, Li Ka Shing CentreCambridgeUK.
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Yuan H, Gomez JA, Chien JS, Zhang L, Wilson CM, Li S, Fales AM, Liu Y, Grant GA, Mirotsou M, Dzau VJ, Vo-Dinh T. Tracking mesenchymal stromal cells using an ultra-bright TAT-functionalized plasmonic-active nanoplatform. JOURNAL OF BIOPHOTONICS 2016; 9:406-413. [PMID: 27095616 PMCID: PMC5645019 DOI: 10.1002/jbio.201500173] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2015] [Revised: 08/11/2015] [Accepted: 08/24/2015] [Indexed: 06/05/2023]
Abstract
High-resolution tracking of stem cells remains a challenging task. An ultra-bright contrast agent with extended intracellular retention is suitable for in vivo high-resolution tracking of stem cells following the implantation. Here, a plasmonic-active nanoplatform was developed for tracking mesenchymal stromal cells (MSCs) in mice. The nanoplatform consisted of TAT peptide-functionalized gold nanostars (TAT-GNS) that emit ultra-bright two-photon photoluminescence capable of tracking MSCs under high-resolution optical imaging. In vitro experiment showed TAT-GNS-labeled MSCs retained a similar differentiability to that of non-labeled MSCs controls. Due to their star shape, TAT-GNS exhibited greater intracellular retention than that of commercial Q-Tracker. In vivo imaging of TAT-GNS-labeled MSCs five days following intra-arterial injections in mice kidneys showed possible MSCs implantation in juxta-glomerular (JG) regions, but non-specifically in glomeruli and afferent arterioles as well. With future design to optimize GNS labeling specificity and clearance, plasmonic-active nanoplatforms may be a useful intracellular tracking tool for stem cell research. An ultra-bright intracellular contrast agent is developed using TAT peptide-functionalized gold nanostars (TAT-GNS). It poses minimal influence on the stem cell differentiability. It exhibits stronger two-photon photoluminescence and superior labeling efficiency than commercial Q-Tracker. Following renal implantation, some TAT-GNS-labeled MSCs permeate blood vessels and migrate to the juxta-glomerular region.
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Affiliation(s)
- Hsiangkuo Yuan
- Department of Biomedical Engineering, Fitzpatrick Institute for Photonics, Duke University, Durham, NC 27708, USA
| | - Jose A Gomez
- Department of Medicine, Duke University Medical Center and Mandel Center for Hypertension and Atherosclerosis Research, Durham, NC 27710, USA
| | - Jennifer S Chien
- Department of Medicine, Duke University Medical Center and Mandel Center for Hypertension and Atherosclerosis Research, Durham, NC 27710, USA
| | - Lunan Zhang
- Department of Medicine, Duke University Medical Center and Mandel Center for Hypertension and Atherosclerosis Research, Durham, NC 27710, USA
| | - Christy M Wilson
- Division of Neurosurgery, Department of Surgery, Duke University Medical Center, Durham, NC 27710, USA
| | - Shuqin Li
- Division of Neurosurgery, Department of Surgery, Duke University Medical Center, Durham, NC 27710, USA
| | - Andrew M Fales
- Department of Biomedical Engineering, Fitzpatrick Institute for Photonics, Duke University, Durham, NC 27708, USA
| | - Yang Liu
- Department of Biomedical Engineering, Fitzpatrick Institute for Photonics, Duke University, Durham, NC 27708, USA
- Department of Chemistry, Duke University, NC 27708, USA
| | - Gerald A Grant
- Division of Neurosurgery, Department of Surgery, Duke University Medical Center, Durham, NC 27710, USA
| | - Maria Mirotsou
- Department of Medicine, Duke University Medical Center and Mandel Center for Hypertension and Atherosclerosis Research, Durham, NC 27710, USA
| | - Victor J Dzau
- Department of Medicine, Duke University Medical Center and Mandel Center for Hypertension and Atherosclerosis Research, Durham, NC 27710, USA
| | - Tuan Vo-Dinh
- Department of Biomedical Engineering, Fitzpatrick Institute for Photonics, Duke University, Durham, NC 27708, USA.
- Department of Chemistry, Duke University, NC 27708, USA.
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Shen WB, Vaccaro DE, Fishman PS, Groman EV, Yarowsky P. SIRB, sans iron oxide rhodamine B, a novel cross-linked dextran nanoparticle, labels human neuroprogenitor and SH-SY5Y neuroblastoma cells and serves as a USPIO cell labeling control. CONTRAST MEDIA & MOLECULAR IMAGING 2016; 11:222-8. [PMID: 26809657 DOI: 10.1002/cmmi.1684] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Revised: 11/11/2015] [Accepted: 12/11/2015] [Indexed: 12/29/2022]
Abstract
This is the first report of the synthesis of a new nanoparticle, sans iron oxide rhodamine B (SIRB), an example of a new class of nanoparticles. SIRB is designed to provide all of the cell labeling properties of the ultrasmall superparamagnetic iron oxide (USPIO) nanoparticle Molday ION Rhodamine B (MIRB) without containing the iron oxide core. MIRB was developed to label cells and allow them to be tracked by MRI or to be manipulated by magnetic gradients. SIRB possesses a similar size, charge and cross-linked dextran coating as MIRB. Of great interest is understanding the biological and physiological changes in cells after they are labeled with a USPIO. Whether these effects are due to the iron oxide buried within the nanoparticle or to the surface coating surrounding the iron oxide core has not been considered previously. MIRB and SIRB represent an ideal pairing of nanoparticles to identify nanoparticle anatomy responsible for post-labeling cytotoxicity. Here we report the effects of SIRB labeling on the SH-SY5Y neuroblastoma cell line and primary human neuroprogenitor cells (hNPCs). These effects are contrasted with the effects of labeling SH-SY5Y cells and hNPCs with MIRB. We find that SIRB labeling, like MIRB labeling, (i) occurs without the use of transfection reagents, (ii) is packaged within lysosomes distributed within cell cytoplasm, (iii) is retained within cells with no loss of label after cell storage, and (iv) does not alter cellular viability or proliferation, and (v) SIRB labeled hNPCs differentiate normally into neurons or astrocytes. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Wei-Bin Shen
- University of Maryland School of Medicine, Department of Pharmacology, Baltimore, MD, 21201, USA
| | | | - Paul S Fishman
- Neurology Service, VA Maryland Healthcare System, Baltimore, MD, 21201, USA.,University of Maryland School of Medicine, Department of Neurology, Baltimore, MD, 21201, USA
| | | | - Paul Yarowsky
- University of Maryland School of Medicine, Department of Pharmacology, Baltimore, MD, 21201, USA.,Research Service, VA Maryland Healthcare System, Baltimore, MD, 21201, USA
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Stem Cell Tracking with Nanoparticles for Regenerative Medicine Purposes: An Overview. Stem Cells Int 2015; 2016:7920358. [PMID: 26839568 PMCID: PMC4709786 DOI: 10.1155/2016/7920358] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 10/07/2015] [Accepted: 10/11/2015] [Indexed: 02/07/2023] Open
Abstract
Accurate and noninvasive stem cell tracking is one of the most important needs in regenerative medicine to determine both stem cell destinations and final differentiation fates, thus allowing a more detailed picture of the mechanisms involved in these therapies.
Given the great importance and advances in the field of nanotechnology for stem cell imaging, currently, several nanoparticles have become standardized products and have been undergoing fast commercialization. This review has been intended to summarize the current use of different engineered nanoparticles in stem cell tracking for regenerative medicine purposes, in particular by detailing their main features and exploring their biosafety aspects, the first step for clinical application. Moreover, this review has summarized the advantages and applications of stem cell tracking with nanoparticles in experimental and preclinical studies and investigated present limitations for their employment in the clinical setting.
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Chen YW, Liou GG, Pan HB, Tseng HH, Hung YT, Chou CP. Specific detection of CD133-positive tumor cells with iron oxide nanoparticles labeling using noninvasive molecular magnetic resonance imaging. Int J Nanomedicine 2015; 10:6997-7018. [PMID: 26635474 PMCID: PMC4646596 DOI: 10.2147/ijn.s86592] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Background The use of ultrasmall superparamagnetic iron oxide (USPIO) nanoparticles to visualize cells has been applied clinically, showing the potential for monitoring cells in vivo with magnetic resonance imaging (MRI). USPIO conjugated with anti-CD133 antibodies (USPIO-CD133 Ab) that recognize the CD133 molecule, a cancer stem cell marker in a variety of cancers, was studied as a novel and potent agent for MRI contrast enhancement of tumor cells. Materials and methods Anti-CD133 antibodies were used to conjugate with USPIO via interaction of streptavidin and biotin for in vivo labeling of CD133-positive cells in xenografted tumors and N-ethyl-N-nitrosourea (ENU)-induced brain tumors. The specific binding of USPIO-CD133 Ab to CD133-positive tumor cells was subsequently detected by Prussian blue staining and MRI with T2-weighted, gradient echo and multiple echo recombined gradient echo images. In addition, the cellular toxicity of USPIO-CD133 Ab was determined by analyzing cell proliferation, apoptosis, and reactive oxygen species production. Results USPIO-CD133 Ab specifically recognizes in vitro and labels CD133-positive cells, as validated using Prussian blue staining and MRI. The assays of cell proliferation, apoptosis, and reactive oxygen species production showed no significant differences in tumor cells with or without labeling of USPIO-CD133 Ab. In vivo imaging of CD133-positive cells was demonstrated by intravenous injection of USPIO-CD133 Ab in mice with HT29 xenografted tumors. The MRI of HT29 xenografts showed several clusters of hypotensive regions that correlated with CD133 expression and Prussian blue staining for iron. In rat, brain tumors induced by transplacental ENU mutagenesis, several clusters of hypointensive zones were observed in CD133-expressing brain tumors by MRI and intravenously administered USPIO-CD133 Ab. Conclusion Combination of USPIO-CD133 Ab and MRI is valuable in recognizing CD133-expressing tumor cells in vitro, extracellularly labeling for cell tracking and detecting CD133-expressing tumors in xenografted tumors as well as ENU-induced rat brain tumors.
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Affiliation(s)
- Ya-Wen Chen
- National Institute of Cancer Research, National Health Research Institutes, Miaoli, Taiwan ; Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan
| | - Gunn-Guang Liou
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Miaoli, Taiwan
| | - Huay-Ben Pan
- Department of Radiology, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan ; School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Hui-Hwa Tseng
- School of Medicine, National Yang-Ming University, Taipei, Taiwan ; Department of Pathology, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
| | - Yu-Ting Hung
- Department of Radiology, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
| | - Chen-Pin Chou
- Department of Radiology, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan ; School of Medicine, National Yang-Ming University, Taipei, Taiwan ; Department of Medical Laboratory Sciences and Biotechnology, Fooyin University, Kaohsiung, Taiwan ; School of Medicine, National Defense Medical Center, Taipei, Taiwan
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35
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Smulders S, Ketkar-Atre A, Luyts K, Vriens H, De Sousa Nobre S, Rivard C, Van Landuyt K, Baken S, Smolders E, Golanski L, Ghosh M, Vanoirbeek J, Himmelreich U, Hoet PH. Body distribution of SiO2–Fe3O4core-shell nanoparticles after intravenous injection and intratracheal instillation. Nanotoxicology 2015; 10:567-74. [DOI: 10.3109/17435390.2015.1100761] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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36
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Staelens D, Liang S, Appeltans B, Van de Wouwer M, Van den Mooter G, Van Assche G, Himmelreich U, Vande Velde G. Visualization of delayed release of compounds from pH-sensitive capsules in vitro and in vivo in a hamster model. CONTRAST MEDIA & MOLECULAR IMAGING 2015; 11:24-31. [PMID: 26190202 DOI: 10.1002/cmmi.1654] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 04/30/2015] [Accepted: 05/20/2015] [Indexed: 12/23/2022]
Abstract
Delayed controlled release is an innovative strategy to locally administer therapeutic compounds (e.g. chemotherapeutics, antibodies etc.). This would improve efficiency and reduce side effects compared with systemic administration. To enable the evaluation of the efficacy of controlled release strategies both in vitro and in vivo, we investigated the release of contrast agents ((19)F-FDG and BaSO4) to the intestinal tract from capsules coated with pH-sensitive polymers (EUDRAGIT L-100) by using two complementary techniques, i.e. (19)F magnetic resonance imaging (MRI) and computed tomography (CT). Using in vitro (19)F-MRI, we were able to non-destructively and dynamically establish a time window of 2 h during which the capsules are resistant to low pH. With (19)F-MRI, we could establish the exact time point when the capsules became water permeable, before physical degradation of the capsule. This was complemented by CT imaging, which provided longitudinal information on physical degradation of the capsule at low pH that was only seen after 230 min. After oral administration to hamsters, (19)F-MRI visualized the early event whereby the capsule becomes water permeable after 2 h. Additionally, using CT, the integrity and location (stomach and small intestines) of the capsule after administration could be monitored. In conclusion, we propose combined (19)F-MRI and CT to non-invasively visualize the different temporal and spatial events regarding the release of compounds, both in an in vitro setting and in the gastrointestinal tract of small animal models. This multimodal imaging approach will enable the in vitro and in vivo evaluation of further technical improvements to controlled release strategies.
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Affiliation(s)
- Dominiek Staelens
- Translational Research Center for Gastrointestinal Disorders, Department of Clinical and Experimental Medicine, KU Leuven, Leuven, Belgium
| | - Sayuan Liang
- Biomedical MRI Unit/MoSAIC, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
| | - Bernard Appeltans
- Drug Delivery and Disposition, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Leuven, Belgium
| | - Marlies Van de Wouwer
- Laboratory for Therapeutic and Diagnostic Antibodies, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Leuven, Belgium.,PharmAbs, KU Leuven, Leuven, Belgium
| | - Guy Van den Mooter
- Drug Delivery and Disposition, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Leuven, Belgium
| | - Gert Van Assche
- Translational Research Center for Gastrointestinal Disorders, Department of Clinical and Experimental Medicine, KU Leuven, Leuven, Belgium
| | - Uwe Himmelreich
- Biomedical MRI Unit/MoSAIC, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
| | - Greetje Vande Velde
- Biomedical MRI Unit/MoSAIC, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
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Naito E, Kudo D, Sekine SI, Watanabe K, Kobatake Y, Tamaoki N, Inden M, Iida K, Ito Y, Hozumi I, Shibata T, Maeda S, Kamishina H. Characterization of canine dental pulp cells and their neuroregenerative potential. In Vitro Cell Dev Biol Anim 2015; 51:1012-22. [PMID: 26170225 DOI: 10.1007/s11626-015-9935-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Accepted: 06/18/2015] [Indexed: 12/13/2022]
Abstract
Dental pulp cells (DPCs) of various species have been studied for their potentials of differentiation into functional neurons and secretion of neurotrophic factors. In canine, DPCs have only been studied for cell surface markers and differentiation, but there is little direct evidence for therapeutic potentials for neurological disorders. The present study aimed to further characterize canine DPCs (cDPCs), particularly focusing on their neuroregenerative potentials. It was also reported that superparamagnetic iron oxide (SPIO) particles were useful for labeling of MSCs and tracking with magnetic resonance imaging (MRI). Our data suggested that cDPCs hold higher proliferation capacity than bone marrow stromal cells, the other type of mesenchymal stem cells which have been the target of intensive research. Canine DPCs constitutively expressed neural markers, suggesting a close relationship to the nervous system in their developmental origin. Canine DPCs promoted neuritogenesis of PC12 cells, most likely through secretion of neurotrophic factors. Furthermore, SPIO nanoparticles could be effectively transported to cDPCs without significant cytotoxicity and unfavorable effects on neuritogenesis. SPIO-labeled cDPCs embedded in agarose spinal cord phantoms were successfully visualized with a magnetic resonance imaging arousing a hope for noninvasive cell tracking in transplantation studies.
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Affiliation(s)
- Eiji Naito
- Department of Veterinary Medicine, Faculty Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - Daichi Kudo
- Laboratory of Medical Therapeutics and Molecular Therapeutics, Gifu Pharmaceutical University, Gifu, Japan
| | - Shin-ichiro Sekine
- Laboratory of Medical Therapeutics and Molecular Therapeutics, Gifu Pharmaceutical University, Gifu, Japan
| | - Kazuhiro Watanabe
- Department of Veterinary Medicine, Faculty Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - Yui Kobatake
- Department of Veterinary Medicine, Faculty Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - Naritaka Tamaoki
- Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - Masatoshi Inden
- Laboratory of Medical Therapeutics and Molecular Therapeutics, Gifu Pharmaceutical University, Gifu, Japan
| | - Kazuki Iida
- Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - Yusuke Ito
- Department of Veterinary Medicine, Faculty Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - Isao Hozumi
- Laboratory of Medical Therapeutics and Molecular Therapeutics, Gifu Pharmaceutical University, Gifu, Japan
| | - Toshiyuki Shibata
- Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - Sadatoshi Maeda
- Department of Veterinary Medicine, Faculty Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - Hiroaki Kamishina
- Department of Veterinary Medicine, Faculty Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan.
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Xu Y, Wu C, Zhu W, Xia C, Wang D, Zhang H, Wu J, Lin G, Wu B, Gong Q, Song B, Ai H. Superparamagnetic MRI probes for in vivo tracking of dendritic cell migration with a clinical 3 T scanner. Biomaterials 2015; 58:63-71. [PMID: 25941783 DOI: 10.1016/j.biomaterials.2015.04.016] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 04/03/2015] [Accepted: 04/08/2015] [Indexed: 02/05/2023]
Abstract
Dendritic cell (DC) based vaccines have shown promising results in the immunotherapy of cancers and other diseases. How to track the in vivo fate of DC vaccines will provide important insights to the final therapeutic results. In this study, we chose magnetic resonance imaging (MRI) to track murine DCs migration to the draining lymph node under a clinical 3 T scanner. Different from labeling immature DCs usually reported in literature, this study instead labeled matured DC with superparamagnetic iron oxide (SPIO) nanoparticle based imaging probes. The labeling process did not show negative impacts on cell viability, morphology, and surface biomarker expression. To overcome the imaging challenges brought by the limitations of the scanner, the size of lymph node, and the number of labeled cell, we optimized MRI pulse sequences. As a result, the signal reduction, caused either by gelatin phantoms containing as low as 12 SPIO-laden cells in each voxel or by the homing SPIO-laden DCs within the draining nodes after footpad injection of only 1 × 10(5) cells, can be clearly depicted under a 3 T MR scanner. Overall, the MRI labeling probes offer a low-toxic and high-efficient MR imaging platform for the assessment of DC-based immunotherapies.
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Affiliation(s)
- Ye Xu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China; Department of Radiology, Children's Hospital, Chongqing Medical University, Chongqing 400014, China
| | - Changqiang Wu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Wencheng Zhu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Chunchao Xia
- Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Dan Wang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Houbin Zhang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Jun Wu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Gan Lin
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Bing Wu
- Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Qiyong Gong
- Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Bin Song
- Department of Radiology, Children's Hospital, Chongqing Medical University, Chongqing 400014, China
| | - Hua Ai
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China; Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China.
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39
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Cell tracking using 19F magnetic resonance imaging: Technical aspects and challenges towards clinical applications. Eur Radiol 2014; 25:726-35. [DOI: 10.1007/s00330-014-3474-5] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2013] [Revised: 10/03/2014] [Accepted: 10/16/2014] [Indexed: 01/03/2023]
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40
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Danhier P, Gallez B. Electron paramagnetic resonance: a powerful tool to support magnetic resonance imaging research. CONTRAST MEDIA & MOLECULAR IMAGING 2014; 10:266-81. [PMID: 25362845 DOI: 10.1002/cmmi.1630] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Accepted: 09/18/2014] [Indexed: 12/31/2022]
Abstract
The purpose of this paper is to describe some of the areas where electron paramagnetic resonance (EPR) has provided unique information to MRI developments. The field of application mainly encompasses the EPR characterization of MRI paramagnetic contrast agents (gadolinium and manganese chelates, nitroxides) and superparamagnetic agents (iron oxide particles). The combined use of MRI and EPR has also been used to qualify or disqualify sources of contrast in MRI. Illustrative examples are presented with attempts to qualify oxygen sensitive contrast (i.e. T1 - and T2 *-based methods), redox status or melanin content in tissues. Other areas are likely to benefit from the combined EPR/MRI approach, namely cell tracking studies. Finally, the combination of EPR and MRI studies on the same models provides invaluable data regarding tissue oxygenation, hemodynamics and energetics. Our description will be illustrative rather than exhaustive to give to the readers a flavour of 'what EPR can do for MRI'.
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Affiliation(s)
- Pierre Danhier
- Biomedical Magnetic Resonance Research Group, Louvain Drug Research Institute, Université catholique de Louvain, Brussels, Belgium
| | - Bernard Gallez
- Biomedical Magnetic Resonance Research Group, Louvain Drug Research Institute, Université catholique de Louvain, Brussels, Belgium
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41
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Kasten A, Grüttner C, Kühn JP, Bader R, Pasold J, Frerich B. Comparative in vitro study on magnetic iron oxide nanoparticles for MRI tracking of adipose tissue-derived progenitor cells. PLoS One 2014; 9:e108055. [PMID: 25244560 PMCID: PMC4171509 DOI: 10.1371/journal.pone.0108055] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Accepted: 08/16/2014] [Indexed: 02/07/2023] Open
Abstract
Magnetic resonance imaging (MRI) using measurement of the transverse relaxation time (R2*) is to be considered as a promising approach for cell tracking experiments to evaluate the fate of transplanted progenitor cells and develop successful cell therapies for tissue engineering. While the relationship between core composition of nanoparticles and their MRI properties is well studied, little is known about possible effects on progenitor cells. This in vitro study aims at comparing two magnetic iron oxide nanoparticle types, single vs. multi-core nanoparticles, regarding their physico-chemical characteristics, effects on cellular behavior of adipose tissue-derived stem cells (ASC) like differentiation and proliferation as well as their detection and quantification by means of MRI. Quantification of both nanoparticle types revealed a linear correlation between labeling concentration and R2* values. However, according to core composition, different levels of labeling concentrations were needed to achieve comparable R2* values. Cell viability was not altered for all labeling concentrations, whereas the proliferation rate increased with increasing labeling concentrations. Likewise, deposition of lipid droplets as well as matrix calcification revealed to be highly dose-dependent particularly regarding multi-core nanoparticle-labeled cells. Synthesis of cartilage matrix proteins and mRNA expression of collagen type II was also highly dependent on nanoparticle labeling. In general, the differentiation potential was decreased with increasing labeling concentrations. This in vitro study provides the proof of principle for further in vivo tracking experiments of progenitor cells using nanoparticles with different core compositions but also provides striking evidence that combined testing of biological and MRI properties is advisable as improved MRI properties of multi-core nanoparticles may result in altered cell functions.
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Affiliation(s)
- Annika Kasten
- Department of Oral and Maxillofacial Surgery, Facial Plastic Surgery, Rostock University Medical Center, Rostock, Germany
| | | | - Jens-Peter Kühn
- Department of Radiology and Neuroradiology, Greifswald University Medical Center, Greifswald, Germany
| | - Rainer Bader
- Department of Orthopaedics, Biomechanics and Implant Technology Research Laboratory, Rostock University Medical Center, Rostock, Germany
| | - Juliane Pasold
- Department of Orthopaedics, Biomechanics and Implant Technology Research Laboratory, Rostock University Medical Center, Rostock, Germany
| | - Bernhard Frerich
- Department of Oral and Maxillofacial Surgery, Facial Plastic Surgery, Rostock University Medical Center, Rostock, Germany
- * E-mail:
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Di Gregorio E, Ferrauto G, Gianolio E, Aime S. Gd loading by hypotonic swelling: an efficient and safe route for cellular labeling. CONTRAST MEDIA & MOLECULAR IMAGING 2014; 8:475-86. [PMID: 24375903 DOI: 10.1002/cmmi.1574] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2013] [Revised: 09/10/2013] [Accepted: 09/23/2013] [Indexed: 11/12/2022]
Abstract
Cells incubated in hypo-osmotic media swell and their membranes become leaky. The flow of water that enters the cells results in the net transport of molecules present in the incubation medium directly into the cell cytoplasm. This phenomenon has been exploited to label cells with MRI Gd-containing contrast agents. It has been found that, in the presence of 100 mM Gd-HPDO3A in an incubation medium characterized by an overall osmolarity of 160 mOsm l⁻¹, each cell is loaded with amounts of paramagnetic complex ranging from 2 × 10⁹ to 2 × 10¹⁰ depending on the cell type. To obtain more insight into the determinants of cellular labeling by the 'hypo-osmotic shock' methodology, a study on cell viability, proliferation rate and cell morphology was carried out on J774A.1 and K562 cells as representative of cells grown in adhesion and suspended ones, respectively. Moreover a comparison of the efficiency of the proposed method with established cell labeling procedures such as pinocytosis and electroporation was carried out. Finally, the effects of the residual electric charge, the size and some structural features of the metal complex were investigated. In summary, the 'hypotonic shock' methodology appears to be an efficient and promising tool to pursue cellular labeling with paramagnetic complexes. Its implementation is straightforward and one may foresee that it will be largely applied in in vitro cellular labeling of many cell types.
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Affiliation(s)
- Enza Di Gregorio
- Molecular Imaging Center, Department of Molecular Biotechnologies and Health Sciences, University of Torino, Via Nizza 52, 10126-, Torino, Italy
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Roose D, Leroux F, De Vocht N, Guglielmetti C, Pintelon I, Adriaensen D, Ponsaerts P, Van der Linden A, Bals S. Multimodal imaging of micron-sized iron oxide particles following in vitro and in vivo uptake by stem cells: down to the nanometer scale. CONTRAST MEDIA & MOLECULAR IMAGING 2014; 9:400-8. [PMID: 24753446 DOI: 10.1002/cmmi.1594] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2013] [Revised: 10/10/2013] [Accepted: 01/08/2014] [Indexed: 11/08/2022]
Abstract
In this study, the interaction between cells and micron-sized paramagnetic iron oxide (MPIO) particles was investigated by characterizing MPIO in their original state, and after cellular uptake in vitro as well as in vivo. Moreover, MPIO in the olfactory bulb were studied 9 months after injection. Using various imaging techniques, cell-MPIO interactions were investigated with increasing spatial resolution. Live cell confocal microscopy demonstrated that MPIO co-localize with lysosomes after in vitro cellular uptake. In more detail, a membrane surrounding the MPIO was observed by high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM). Following MPIO uptake in vivo, the same cell-MPIO interaction was observed by HAADF-STEM in the subventricular zone at 1 week and in the olfactory bulb at 9 months after MPIO injection. These findings provide proof for the current hypothesis that MPIO are internalized by the cell through endocytosis. The results also show MPIO are not biodegradable, even after 9 months in the brain. Moreover, they show the possibility of HAADF-STEM generating information on the labeled cell as well as on the MPIO. In summary, the methodology presented here provides a systematic route to investigate the interaction between cells and nanoparticles from the micrometer level down to the nanometer level and beyond.
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Affiliation(s)
- Dimitri Roose
- EMAT, University of Antwerp, Antwerp, Belgium; Bio-Imaging Lab, University of Antwerp, Antwerp, Belgium; Laboratory of Experimental Hematology, University of Antwerp, Antwerp, Belgium
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Ketkar-Atre A, Struys T, Soenen SJ, Lambrichts I, Verfaillie CM, De Cuyper M, Himmelreich U. Variability in contrast agent uptake by different but similar stem cell types. Int J Nanomedicine 2013; 8:4577-91. [PMID: 24399873 PMCID: PMC3876490 DOI: 10.2147/ijn.s51588] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The need to track and evaluate the fate of transplanted cells is an important issue in regenerative medicine. In order to accomplish this, pre-labelling cells with magnetic resonance imaging (MRI) contrast agents is a well-established method. Uptake of MRI contrast agents by non-phagocytic stem cells, and factors such as cell homeostasis or the adverse effects of contrast agents on cell biology have been extensively studied, but in the context of nanoparticle (NP)-specific parameters. Here, we have studied three different types of NPs (Endorem®, magnetoliposomes [MLs], and citrate coated C-200) to label relatively larger, mesenchymal stem cells (MSCs) and, much smaller yet faster proliferating, multipotent adult progenitor cells (MAPCs). Both cell types are similar, as they are isolated from bone marrow and have substantial regenerative potential, which make them interesting candidates for comparative experiments. Using NPs with different surface coatings and sizes, we found that differences in the proliferative and morphological characteristics of the cells used in the study are mainly responsible for the fate of endocytosed iron, intracellular iron concentration, and cytotoxic responses. The quantitative analysis, using high-resolution electron microscopy images, demonstrated a strong relationship between cell volume/surface, uptake, and cytotoxicity. Interestingly, uptake and toxicity trends are reversed if intracellular concentrations, and not amounts, are considered. This indicates that more attention should be paid to cellular parameters such as cell size and proliferation rate in comparative cell-labeling studies.
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Affiliation(s)
- Ashwini Ketkar-Atre
- Biomedical MRI/MoSAIC, Department of Imaging and Pathology, Biomedical Sciences Group, Katholieke Universiteit Leuven, Leuven, Belgium
| | - Tom Struys
- Biomedical MRI/MoSAIC, Department of Imaging and Pathology, Biomedical Sciences Group, Katholieke Universiteit Leuven, Leuven, Belgium ; Lab of Histology, Biomedical Research Institute, Hasselt University, Campus Diepenbeek, Agoralaan, Diepenbeek, Belgium
| | - Stefaan J Soenen
- Lab for General Biochemistry and Physical Pharmacy, Faculty of Pharmacy, Ghent University, Ghent, Belgium
| | - Ivo Lambrichts
- Lab of Histology, Biomedical Research Institute, Hasselt University, Campus Diepenbeek, Agoralaan, Diepenbeek, Belgium
| | - Catherine M Verfaillie
- Interdepartmental Stem Cell Institute, O&N IV, Katholieke Universiteit Leuven, Leuven, Belgium
| | - Marcel De Cuyper
- Laboratory of BioNanoColloids, Interdisciplinary Research Centre, Katholieke Universiteit Leuven, Kortrijk, Belgium
| | - Uwe Himmelreich
- Biomedical MRI/MoSAIC, Department of Imaging and Pathology, Biomedical Sciences Group, Katholieke Universiteit Leuven, Leuven, Belgium
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Trekker J, Leten C, Struys T, Lazenka VV, Argibay B, Micholt L, Lambrichts I, Van Roy W, Lagae L, Himmelreich U. Sensitive in vivo cell detection using size-optimized superparamagnetic nanoparticles. Biomaterials 2013; 35:1627-35. [PMID: 24246643 DOI: 10.1016/j.biomaterials.2013.11.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Accepted: 11/01/2013] [Indexed: 12/28/2022]
Abstract
Magnetic nanoparticle (MNP) enabled cell visualization with magnetic resonance imaging (MRI) is currently an intensively studied area of research. In the present study, we have synthesized polyethylene glycolated (PEG) MNPs and validated their suitability as MR cell labeling agents in in vitro and in vivo experiments. The labeling of therapeutic potent mesenchymal stem cells (MSCs) with small core and large core MNPs was evaluated. Both MNPs were, in combination with a transfection agent, stably internalized into the MSCs and didn't show an effect on cell metabolism. The labeled cells showed high contrast in MRI phantom studies. For quantification purposes, the MRI contrast generating properties of cells labeled with small core MNPs were compared with large core MNPs and with the commercial contrast agent Endorem. MSCs labeled with the large core MNPs showed the highest contrast generating properties in in vitro phantom studies and in in vivo intracranial stereotactic injection experiments, confirming the size-relaxivity relationship in biological systems. Finally, the distribution of MSCs pre-labeled with large core PEGylated MNPs was visualized non-invasively with MRI in a glioma model.
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Affiliation(s)
- Jesse Trekker
- IMEC, Leuven, Belgium; Department of Imaging and Pathology, Biomedical MRI/Mosaic, KU Leuven, Leuven, Belgium.
| | - Cindy Leten
- Department of Imaging and Pathology, Biomedical MRI/Mosaic, KU Leuven, Leuven, Belgium
| | - Tom Struys
- Department of Imaging and Pathology, Biomedical MRI/Mosaic, KU Leuven, Leuven, Belgium; Lab of Histology, Biomedical Research Institute, Hasselt University, Diepenbeek, Belgium
| | - Vera V Lazenka
- Department of Physics, Solid State Physics and Magnetism, KU Leuven, Leuven, Belgium
| | - Barbara Argibay
- Department of Neurology, Clinical Neuroscience Research Lab, Hospital Clinico Universitario, University of Santiago de Compostela, IDIS, Santiago de Compostela, Spain
| | | | - Ivo Lambrichts
- Lab of Histology, Biomedical Research Institute, Hasselt University, Diepenbeek, Belgium
| | | | - Liesbet Lagae
- IMEC, Leuven, Belgium; Department of Physics, Solid State Physics and Magnetism, KU Leuven, Leuven, Belgium
| | - Uwe Himmelreich
- Department of Imaging and Pathology, Biomedical MRI/Mosaic, KU Leuven, Leuven, Belgium
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Mastropietro A, De Bernardi E, Breschi GL, Zucca I, Cametti M, Soffientini CD, de Curtis M, Terraneo G, Metrangolo P, Spreafico R, Resnati G, Baselli G. Optimization of rapid acquisition with relaxation enhancement (RARE) pulse sequence parameters for19F-MRI studies. J Magn Reson Imaging 2013; 40:162-70. [DOI: 10.1002/jmri.24347] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Affiliation(s)
- Alfonso Mastropietro
- Politecnico di Milano; Department of Electronics Information and Bioengineering; Milano Italy
- Scientific Direction Unit; Fondazione IRCCS Istituto Neurologico C. Besta; Milano Italy
- Politecnico di Milano, NFMLab Department of Chemistry; Materials and Chemical Engineering Giulio Natta; Milano Italy
| | - Elisabetta De Bernardi
- Politecnico di Milano; Department of Electronics Information and Bioengineering; Milano Italy
- Health Science Department; University of Milano-Bicocca; Monza Italy
- Tecnomed Foundation; University of Milano-Bicocca; Monza Italy
- Politecnico di Milano, NFMLab Department of Chemistry; Materials and Chemical Engineering Giulio Natta; Milano Italy
| | - Gian Luca Breschi
- Experimental Neurophysiology and Epileptology Unit; Fondazione IRCCS Istituto Neurologico C. Besta; Milano Italy
- Department of Neuroscience and Brain Technologies; Istituto Italiano di Tecnologia; Genova Italy
- Politecnico di Milano, NFMLab Department of Chemistry; Materials and Chemical Engineering Giulio Natta; Milano Italy
| | - Ileana Zucca
- Scientific Direction Unit; Fondazione IRCCS Istituto Neurologico C. Besta; Milano Italy
- Politecnico di Milano, NFMLab Department of Chemistry; Materials and Chemical Engineering Giulio Natta; Milano Italy
| | - Massimo Cametti
- Clinical Epileptology and Experimental Neurophysiology Unit; Fondazione IRCCS Istituto Neurologico C. Besta; Milano Italy
- Politecnico di Milano, NFMLab Department of Chemistry; Materials and Chemical Engineering Giulio Natta; Milano Italy
| | - Chiara Dolores Soffientini
- Politecnico di Milano; Department of Electronics Information and Bioengineering; Milano Italy
- Politecnico di Milano, NFMLab Department of Chemistry; Materials and Chemical Engineering Giulio Natta; Milano Italy
| | - Marco de Curtis
- Experimental Neurophysiology and Epileptology Unit; Fondazione IRCCS Istituto Neurologico C. Besta; Milano Italy
- Politecnico di Milano, NFMLab Department of Chemistry; Materials and Chemical Engineering Giulio Natta; Milano Italy
| | - Giancarlo Terraneo
- Clinical Epileptology and Experimental Neurophysiology Unit; Fondazione IRCCS Istituto Neurologico C. Besta; Milano Italy
- Politecnico di Milano, NFMLab Department of Chemistry; Materials and Chemical Engineering Giulio Natta; Milano Italy
| | - Pierangelo Metrangolo
- Clinical Epileptology and Experimental Neurophysiology Unit; Fondazione IRCCS Istituto Neurologico C. Besta; Milano Italy
- Politecnico di Milano, NFMLab Department of Chemistry; Materials and Chemical Engineering Giulio Natta; Milano Italy
| | - Roberto Spreafico
- Department of Neuroscience and Brain Technologies; Istituto Italiano di Tecnologia; Genova Italy
- Politecnico di Milano, NFMLab Department of Chemistry; Materials and Chemical Engineering Giulio Natta; Milano Italy
| | - Giuseppe Resnati
- Clinical Epileptology and Experimental Neurophysiology Unit; Fondazione IRCCS Istituto Neurologico C. Besta; Milano Italy
- Politecnico di Milano, NFMLab Department of Chemistry; Materials and Chemical Engineering Giulio Natta; Milano Italy
| | - Giuseppe Baselli
- Politecnico di Milano; Department of Electronics Information and Bioengineering; Milano Italy
- Politecnico di Milano, NFMLab Department of Chemistry; Materials and Chemical Engineering Giulio Natta; Milano Italy
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Markides H, Kehoe O, Morris RH, El Haj AJ. Whole body tracking of superparamagnetic iron oxide nanoparticle-labelled cells--a rheumatoid arthritis mouse model. Stem Cell Res Ther 2013; 4:126. [PMID: 24406201 PMCID: PMC3854718 DOI: 10.1186/scrt337] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Accepted: 10/11/2013] [Indexed: 12/29/2022] Open
Abstract
Introduction The application of mesenchymal stem cells (MSCs) in treating rheumatoid arthritis (RA) has been made possible by the immunosuppressive and differentiation abilities of these cells. A non-invasive means of assessing cell integration and bio-distribution is fundamental in evaluating the risks and success of this therapy, thereby enabling clinical translation. This paper defines the use of superparamagnetic iron oxide nanoparticles (SPIONs) in conjunction with magnetic resonance imaging (MRI) to image and track MSCs in vivo within a murine model of RA. Methods Murine MSCs (mMSCs) were isolated, expanded and labelled with SiMAG, a commercially available particle. In vitro MRI visibility thresholds were investigated by labelling mMSCs with SiMAG with concentrations ranging from 0 to 10 μg/ml and resuspending varying cell doses (103 to 5 × 105 cells) in 2 mg/ml collagen prior to MR-imaging. Similarly, in vivo detection thresholds were identified by implanting 3 × 105 mMSCs labelled with 0 to 10 μg/ml SiMAG within the synovial cavity of a mouse and MR-imaging. Upon RA induction, 300,000 mMSCs labelled with SiMAG (10 μg/ml) were implanted via intra-articular injection and joint swelling monitored as an indication of RA development over seven days. Furthermore, the effect of SiMAG on cell viability, proliferation and differentiation was investigated. Results A minimum particle concentration of 1 μg/ml (300,000 cells) and cell dose of 100,000 cells (5 and 10 μg/ml) were identified as the in vitro MRI detection threshold. Cell viability, proliferation and differentiation capabilities were not affected, with labelled populations undergoing successful differentiation down osteogenic and adipogenic lineages. A significant decrease (P < 0.01) in joint swelling was measured in groups containing SiMAG-labelled and unlabelled mMSCs implying that the presence of SPIONs does not affect the immunomodulating properties of the cells. In vivo MRI scans demonstrated good contrast and the identification of SiMAG-labelled populations within the synovial joint up to 7 days post implantation. This was further confirmed using histological analysis. Conclusions We have been able to monitor and track the migration of stem cell populations within the rheumatic joint in a non-invasive manner. This manuscript goes further to highlight the key characteristics (biocompatible and the ability to create significant contrast at realistic doses within a clinical relevant system) demonstrated by SiMAG that should be incorporated into the design of a new clinically approved tracking agent.
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De Temmerman ML, Soenen SJ, Symens N, Lucas B, Vandenbroucke RE, Libert C, Demeester J, De Smedt SC, Himmelreich U, Rejman J. Magnetic layer-by-layer coated particles for efficient MRI of dendritic cells and mesenchymal stem cells. Nanomedicine (Lond) 2013; 9:1363-76. [PMID: 24102328 DOI: 10.2217/nnm.13.88] [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] [Indexed: 11/21/2022] Open
Abstract
AIM Cell detection by MRI requires high doses of contrast agent for generating image contrast. Therefore, there is a constant need to develop improved systems that further increase sensitivity, and which could be used in clinical settings. In this study, we devised layer-by-layer particles and tested their potential for cell labeling. MATERIALS & METHODS The advantages of layer-by-layer technology were exploited to obtain magnetic particles of controllable size, surface chemistry and magnetic payload. RESULTS Flexibility in size and surface charge enabled efficient intracellular delivery of magnetic particles in mesenchymal stem cells and dendritic cells. Owing to the high magnetic payload of the particles, high MRI contrast was generated, even for very low cell numbers. Subcutaneous injection of the particles and subsequent uptake by dendritic cells enabled clear visualization of dendritic cells homing towards nearby lymph nodes in mice. CONCLUSION The magnetic particles offer several possibilities as efficient cellular MRI contrast agents for direct in vitro or in vivo cell labeling.
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Affiliation(s)
- Marie-Luce De Temmerman
- Laboratory of General Biochemistry & Physical Pharmacy, Faculty of Pharmaceutical Sciences, Ghent University, Harelbekestraat 72, B-9000 Ghent, Belgium
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Multimodality molecular imaging of stem cells therapy for stroke. BIOMED RESEARCH INTERNATIONAL 2013; 2013:849819. [PMID: 24222920 PMCID: PMC3816035 DOI: 10.1155/2013/849819] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2013] [Accepted: 08/21/2013] [Indexed: 12/03/2022]
Abstract
Stem cells have been proposed as a promising therapy for treating stroke. While several studies have demonstrated the therapeutic benefits of stem cells, the exact mechanism remains elusive. Molecular imaging provides the possibility of the visual representation of biological processes at the cellular and molecular level. In order to facilitate research efforts to understand the stem cells therapeutic mechanisms, we need to further develop means of monitoring these cells noninvasively, longitudinally and repeatedly. Because of tissue depth and the blood-brain barrier (BBB), in vivo imaging of stem cells therapy for stroke has unique challenges. In this review, we describe existing methods of tracking transplanted stem cells in vivo, including magnetic resonance imaging (MRI), nuclear medicine imaging, and optical imaging (OI). Each of the imaging techniques has advantages and drawbacks. Finally, we describe multimodality imaging strategies as a more comprehensive and potential method to monitor transplanted stem cells for stroke.
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50
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Struys T, Ketkar-Atre A, Gervois P, Leten C, Hilkens P, Martens W, Bronckaers A, Dresselaers T, Politis C, Lambrichts I, Himmelreich U. Magnetic Resonance Imaging of Human Dental Pulp Stem Cells in Vitro and in Vivo. Cell Transplant 2013; 22:1813-29. [DOI: 10.3727/096368912x657774] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Recent advances in stem cell research have shown the promising nature of mesenchymal stem cells as plausible candidates for cell-based regenerative medicine. Many studies reported the use of human dental pulp stem cells (hDPSCs), which possess self-renewal capacity, high proliferation potential, and the ability to undergo multilineage differentiation. Together with this therapeutic approach, development of effective, noninvasive and nontoxic imaging techniques for visualizing and tracking the cells in vivo is crucial for the evaluation and improvement of stem cell therapy. Magnetic resonance imaging (MRI) is one of the most powerful diagnostic imaging techniques currently available for in vivo diagnosis and has been proposed as the most attractive modality for monitoring stem cell migration. The aim of this study was to investigate the labeling efficiency of hDPSCs using superparamagnetic iron oxide (SPIO) particles in order to allow visualization using in vitro and in vivo MRI without influencing cellular metabolism. MRI and transmission electron microscopy (TEM) showed optimal uptake with low SPIO concentrations of 15 μg/ml in combination with 0.75 μg/ml poly-l-lysine (PLL) resulting in more than 13 pg iron/cell and an in vitro detection limit of 50 labeled cells/μl. Very low SPIO concentrations in the culture medium resulted in extremely high labeling efficiency not reported before. For these conditions, tetrazolium salt assays showed no adverse effects on cell viability. Furthermore, in vivo MRI was performed to detect labeled hDPSCs transplanted into the brain of Rag 2-γ C immune-deficient mice. Transplanted cells did not show any signs of tumorgenecity or teratoma formation during the studied time course. We have reported on a labeling and imaging strategy to visualize human dental pulp stem cells in vivo using MRI. These data provide a solid base to allow cell tracking in future regenerative studies in the brain longitudinally.
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Affiliation(s)
- T. Struys
- Biomedical MRI Unit-MoSAIC, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
- Biomedical Research Institute, Lab of Histology, Hasselt University, Diepenbeek, Belgium
| | - A. Ketkar-Atre
- Biomedical MRI Unit-MoSAIC, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
| | - P. Gervois
- Biomedical Research Institute, Lab of Histology, Hasselt University, Diepenbeek, Belgium
| | - C. Leten
- Biomedical MRI Unit-MoSAIC, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
| | - P. Hilkens
- Biomedical Research Institute, Lab of Histology, Hasselt University, Diepenbeek, Belgium
| | - W. Martens
- Biomedical Research Institute, Lab of Histology, Hasselt University, Diepenbeek, Belgium
| | - A. Bronckaers
- Biomedical Research Institute, Lab of Histology, Hasselt University, Diepenbeek, Belgium
| | - T. Dresselaers
- Biomedical MRI Unit-MoSAIC, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
| | - C. Politis
- Ziekenhuis Oost-Limburg (ZOL), Genk, Belgium
| | - I. Lambrichts
- Biomedical Research Institute, Lab of Histology, Hasselt University, Diepenbeek, Belgium
| | - U. Himmelreich
- Biomedical MRI Unit-MoSAIC, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
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