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Puskar A, Saadah B, Rauf A, Kasperek SR, Umair M. A primer on contrast agents for magnetic resonance imaging of post‐procedural and follow‐up imaging of islet cell transplant. NANO SELECT 2023. [DOI: 10.1002/nano.202200147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023] Open
Affiliation(s)
- Anessa Puskar
- Carle Illinois College of Medicine Urbana‐Champaign Urbana Illinois USA
| | - Bara Saadah
- Carle Illinois College of Medicine Urbana‐Champaign Urbana Illinois USA
| | - Asad Rauf
- Carle Illinois College of Medicine Urbana‐Champaign Urbana Illinois USA
| | | | - Muhammad Umair
- Department of Radiology Johns Hopkins Baltimore Maryland USA
- Department of Biomedical Engineering University of Illinois Urbana‐Champaign Urbana Illinois USA
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2
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Purich K, Cai H, Yang B, Xu Z, Tessier AG, Black A, Hung RW, Boivin E, Xu B, Wu P, Zhang B, Xin D, Fallone BG, Rajotte RV, Wu Y, Rayat GR. MRI monitoring of transplanted neonatal porcine islets labeled with polyvinylpyrrolidone-coated superparamagnetic iron oxide nanoparticles in a mouse model. Xenotransplantation 2021; 29:e12720. [PMID: 34850455 DOI: 10.1111/xen.12720] [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: 05/04/2021] [Revised: 09/25/2021] [Accepted: 10/22/2021] [Indexed: 11/27/2022]
Abstract
Islet transplantation is a potential treatment option for certain patients with type 1 diabetes; however, it still faces barriers to widespread use, including the lack of tools to monitor islet grafts post-transplantation. This study investigates whether labeling neonatal porcine islets (NPI) with polyvinylpyrrolidone-coated superparamagnetic iron oxide nanoparticles (PVP-SPIO) affects their function, and whether this nanoparticle can be utilized to monitor NPI xenografts with magnetic resonance imaging (MRI) in a mouse model. In vitro, PVP-SPIO-labeled NPI in an agarose gel was visualized clearly by MRI. PVP-SPIO-labeled islets were then transplanted under the kidney capsules of immunodeficient nondiabetic and diabetic mice. All diabetic mice that received transplantation of PVP-SPIO-labeled islets reached normoglycemia. Grafts appeared as hypo-intense areas on MRI and were distinguishable from the surrounding tissues. Following injection of spleen cells from immunocompetent mice, normoglycemic recipient mice became diabetic and islet grafts showed an increase in volume, accompanied by a mixed signal on MRI. Overall, this study demonstrates that PVP-SPIO did not affect the function of NPI that PVP-SPIO-labeled islets were easily seen on MRI, and changes in MRI signals following rejection suggest a potential use of PVP-SPIO-labeled islets to monitor graft viability.
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Affiliation(s)
- Kieran Purich
- Department of Surgery, Ray Rajotte Surgical-Medical Research Institute, Alberta Diabetes Institute, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Haolei Cai
- Department of Surgery, 2nd Affiliated Hospital of Medical College, Zhejiang University, Hangzhou, China
| | - Bin Yang
- Department of Surgery, 2nd Affiliated Hospital of Medical College, Zhejiang University, Hangzhou, China
| | - Zhihao Xu
- Department of Surgery, Ray Rajotte Surgical-Medical Research Institute, Alberta Diabetes Institute, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Anthony G Tessier
- Department of Oncology, University of Alberta, Edmonton, Alberta, Canada.,Department of Medical Physics, Cross Cancer Institute, Edmonton, Alberta, Canada
| | - Adnan Black
- Department of Surgery, Ray Rajotte Surgical-Medical Research Institute, Alberta Diabetes Institute, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Ryan W Hung
- Department of Radiology and Diagnostic Imaging, University of Alberta, Edmonton, Alberta, Canada
| | - Eric Boivin
- Department of Surgery, Ray Rajotte Surgical-Medical Research Institute, Alberta Diabetes Institute, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Baoyou Xu
- Department of Surgery, Ray Rajotte Surgical-Medical Research Institute, Alberta Diabetes Institute, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Ping Wu
- Department of Surgery, Ray Rajotte Surgical-Medical Research Institute, Alberta Diabetes Institute, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Bo Zhang
- Department of Surgery, 2nd Affiliated Hospital of Medical College, Zhejiang University, Hangzhou, China
| | - Dong Xin
- Department of Surgery, 2nd Affiliated Hospital of Medical College, Zhejiang University, Hangzhou, China
| | - Biagio Gino Fallone
- Department of Oncology, University of Alberta, Edmonton, Alberta, Canada.,Department of Medical Physics, Cross Cancer Institute, Edmonton, Alberta, Canada
| | - Ray V Rajotte
- Department of Surgery, Ray Rajotte Surgical-Medical Research Institute, Alberta Diabetes Institute, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Yulian Wu
- Department of Surgery, 2nd Affiliated Hospital of Medical College, Zhejiang University, Hangzhou, China
| | - Gina R Rayat
- Department of Surgery, Ray Rajotte Surgical-Medical Research Institute, Alberta Diabetes Institute, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
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3
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Abstract
Pancreatic islets (PIs) transplantation is an alternative approach for the treatment of severe forms of type 1 diabetes (T1D). To monitor the success of transplantation, it is desirable to follow the location of engrafted PIs non-invasively. In vivo magnetic resonance imaging (MRI) of transplanted PIs is a feasible cell tracking method; however, this requires labeling with a suitable contrast agent prior to transplantation. We have tested the feasibility of cationic magnetoliposomes (MLs), compared to commercial contrast agents (Endorem and Resovist), by labeling insulinoma cells and freshly isolated rat PIs. It was possible to incorporate Magnetic Ressonance (MR)-detectable amounts of MLs in a shorter time (4 h) when compared to Endorem and Resovist. MLs did not show negative effects on the PIs' viability and functional parameters in vitro. Labeled islets were transplanted in the renal sub-capsular region of healthy mice. Hypointense contrast in MR images due to the labeled PIs was detected in vivo upon transplantation, while MR detection of PIs labeled with Endorem and Resovist was only possible after the addition of transfection agents. These findings indicate that MLs are suitable to image PIs, without affecting their function, which is promising for future longitudinal pre-clinical and clinical studies involving the assessment of PI transplantation.
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4
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Stem Cell Tracing Through MR Molecular Imaging. Tissue Eng Regen Med 2018; 15:249-261. [PMID: 30603551 DOI: 10.1007/s13770-017-0112-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 12/09/2017] [Accepted: 12/27/2017] [Indexed: 01/12/2023] Open
Abstract
Stem cell therapy opens a new window in medicine to overcome several diseases that remain incurable. It appears such diseases as cardiovascular disorders, brain injury, multiple sclerosis, urinary system diseases, cartilage lesions and diabetes are curable with stem cell transplantation. However, some questions related to stem cell therapy have remained unanswered. Stem cell imaging allows approval of appropriated strategies such as selection of the type and dose of stem cell, and also mode of cell delivery before being tested in clinical trials. MRI as a non-invasive imaging modality provides proper conditions for this aim. So far, different contrast agents such as superparamagnetic or paramagnetic nanoparticles, ultrasmall superparamagnetic nanoparticles, fluorine, gadolinium and some types of reporter genes have been used for imaging of stem cells. The core subject of these studies is to investigate the survival and differentiation of stem cells, contrast agent's toxicity and long term following of transplanted cells. The promising results of in vivo and some clinical trial studies may raise hope for clinical stem cells imaging with MRI.
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Jodal A, Schibli R, Béhé M. Targets and probes for non-invasive imaging of β-cells. Eur J Nucl Med Mol Imaging 2016; 44:712-727. [PMID: 28025655 PMCID: PMC5323463 DOI: 10.1007/s00259-016-3592-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Accepted: 12/01/2016] [Indexed: 12/16/2022]
Abstract
β-cells, located in the islets of the pancreas, are responsible for production and secretion of insulin and play a crucial role in blood sugar regulation. Pathologic β-cells often cause serious medical conditions affecting blood glucose level, which severely impact life quality and are life-threatening if untreated. With 347 million patients, diabetes is one of the most prevalent diseases, and will continue to be one of the largest socioeconomic challenges in the future. The diagnosis still relies mainly on indirect methods like blood sugar measurements. A non-invasive diagnostic imaging modality would allow direct evaluation of β-cell mass and would be a huge step towards personalized medicine. Hyperinsulinism is another serious condition caused by β-cells that excessively secrete insulin, like for instance β-cell hyperplasia and insulinomas. Treatment options with drugs are normally not curative, whereas curative procedures usually consist of the resection of affected regions for which, however, an exact localization of the foci is necessary. In this review, we describe potential tracers under development for targeting β-cells with focus on radiotracers for PET and SPECT imaging, which allow the non-invasive visualization of β-cells. We discuss either the advantages or limitations for the various tracers and modalities. This article concludes with an outlook on future developments and discuss the potential of new imaging probes including dual probes that utilize functionalities for both a radioactive and optical moiety as well as for theranostic applications.
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Affiliation(s)
- Andreas Jodal
- Center for Radiopharmaceutical Sciences ETH-PSI-USZ, Paul Scherrer Institut, 5232, Villigen, Switzerland
| | - Roger Schibli
- Center for Radiopharmaceutical Sciences ETH-PSI-USZ, Paul Scherrer Institut, 5232, Villigen, Switzerland.,Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland
| | - Martin Béhé
- Center for Radiopharmaceutical Sciences ETH-PSI-USZ, Paul Scherrer Institut, 5232, Villigen, Switzerland.
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Tefft BJ, Uthamaraj S, Harburn JJ, Klabusay M, Dragomir-Daescu D, Sandhu GS. Cell Labeling and Targeting with Superparamagnetic Iron Oxide Nanoparticles. J Vis Exp 2015:e53099. [PMID: 26554870 DOI: 10.3791/53099] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Targeted delivery of cells and therapeutic agents would benefit a wide range of biomedical applications by concentrating the therapeutic effect at the target site while minimizing deleterious effects to off-target sites. Magnetic cell targeting is an efficient, safe, and straightforward delivery technique. Superparamagnetic iron oxide nanoparticles (SPION) are biodegradable, biocompatible, and can be endocytosed into cells to render them responsive to magnetic fields. The synthesis process involves creating magnetite (Fe3O4) nanoparticles followed by high-speed emulsification to form a poly(lactic-co-glycolic acid) (PLGA) coating. The PLGA-magnetite SPIONs are approximately 120 nm in diameter including the approximately 10 nm diameter magnetite core. When placed in culture medium, SPIONs are naturally endocytosed by cells and stored as small clusters within cytoplasmic endosomes. These particles impart sufficient magnetic mass to the cells to allow for targeting within magnetic fields. Numerous cell sorting and targeting applications are enabled by rendering various cell types responsive to magnetic fields. SPIONs have a variety of other biomedical applications as well including use as a medical imaging contrast agent, targeted drug or gene delivery, diagnostic assays, and generation of local hyperthermia for tumor therapy or tissue soldering.
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Affiliation(s)
| | | | | | - Martin Klabusay
- Regional Center for Applied Molecular Oncology, Masaryk Memorial Cancer Institute
| | - Dan Dragomir-Daescu
- Division of Engineering, Mayo Clinic; Mayo Clinic College of Medicine, Mayo Clinic;
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Canfarotta F, Piletsky SA. Engineered magnetic nanoparticles for biomedical applications. Adv Healthc Mater 2014; 3:160-75. [PMID: 24497448 DOI: 10.1002/adhm.201300141] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Indexed: 12/11/2022]
Abstract
In the past decades, magnetic nanoparticles (MNPs) have been used in wide range of diverse applications, ranging from separation to sensing. Here, synthesis and applications of functionalized MNPs in the biomedical field are discussed, in particular in drug delivery, imaging, and cancer therapy, highlighting also recent progresses in the development of multifunctional and stimuli-responsive MNPs. The role of their size, composition, and surface functionalization is analyzed, together with their biocompatibility issues.
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Yang B, Cai H, Qin W, Zhang B, Zhai C, Jiang B, Wu Y. Bcl-2-functionalized ultrasmall superparamagnetic iron oxide nanoparticles coated with amphiphilic polymer enhance the labeling efficiency of islets for detection by magnetic resonance imaging. Int J Nanomedicine 2013; 8:3977-90. [PMID: 24204136 PMCID: PMC3804583 DOI: 10.2147/ijn.s52058] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Based on their versatile, biocompatible properties, superparamagnetic iron oxide (SPIO) or ultrasmall superparamagnetic iron oxide (USPIO) nanoparticles are utilized for detecting and tracing cells or tumors in vivo. Here, we developed an innoxious and concise synthesis approach for a novel B-cell lymphoma (Bcl)-2 monoclonal antibody-functionalized USPIO nanoparticle coated with an amphiphilic polymer (carboxylated polyethylene glycol monooleyl ether [OE-PEG-COOH]). These nanoparticles can be effectively internalized by beta cells and label primary islet cells, at relatively low iron concentration. The biocompatibility and cytotoxicity of these products were investigated by comparison with the commercial USPIO product, FeraSpin™ S. We also assessed the safe dosage range of the product. Although some cases showed a hypointensity change at the site of transplant, a strong magnetic resonance imaging (MRI) was detectable by a clinical MRI scanner, at field strength of 3.0 Tesla, in vivo, and the iron deposition/attached in islets was confirmed by Prussian blue and immunohistochemistry staining. It is noteworthy that based on our synthesis approach, in future, we could exchange the Bcl-2 with other probes that would be more specific for the targeted cells and that would have better labeling specificity in vivo. The combined results point to the promising potential of the novel Bcl-2-functionalized PEG-USPIO as a molecular imaging agent for in vivo monitoring of islet cells or other cells.
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Affiliation(s)
- Bin Yang
- Department of Surgery, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, People's Republic of China
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9
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Sakata N, Yoshimatsu G, Tsuchiya H, Aoki T, Mizuma M, Motoi F, Katayose Y, Kodama T, Egawa S, Unno M. Imaging of transplanted islets by positron emission tomography, magnetic resonance imaging, and ultrasonography. Islets 2013; 5:179-87. [PMID: 24231367 PMCID: PMC4010569 DOI: 10.4161/isl.26980] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
While islet transplantation is considered a useful therapeutic option for severe diabetes mellitus (DM), the outcome of this treatment remains unsatisfactory. This is largely due to the damage and loss of islets in the early transplant stage. Thus, it is important to monitor the condition of the transplanted islets, so that a treatment can be selected to rescue the islets from damage if needed. Recently, numerous trials have been performed to investigate the efficacy of different imaging modalities for visualizing transplanted islets. Positron emission tomography (PET) and magnetic resonance imaging (MRI) are the most commonly used imaging modalities for this purpose. Some groups, including ours, have also tried to visualize transplanted islets by ultrasonography (US). In this review article, we discuss the recent progress in islet imaging.
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Affiliation(s)
- Naoaki Sakata
- Division of Hepato-Biliary-Pancreatic Surgery; Department of Surgery; Tohoku University Graduate School of Medicine; Sendai, Japan
- Correspondence to: Naoaki Sakata,
| | - Gumpei Yoshimatsu
- Division of Hepato-Biliary-Pancreatic Surgery; Department of Surgery; Tohoku University Graduate School of Medicine; Sendai, Japan
| | - Haruyuki Tsuchiya
- Division of Hepato-Biliary-Pancreatic Surgery; Department of Surgery; Tohoku University Graduate School of Medicine; Sendai, Japan
| | - Takeshi Aoki
- Division of Hepato-Biliary-Pancreatic Surgery; Department of Surgery; Tohoku University Graduate School of Medicine; Sendai, Japan
| | - Masamichi Mizuma
- Division of Hepato-Biliary-Pancreatic Surgery; Department of Surgery; Tohoku University Graduate School of Medicine; Sendai, Japan
| | - Fuyuhiko Motoi
- Division of Hepato-Biliary-Pancreatic Surgery; Department of Surgery; Tohoku University Graduate School of Medicine; Sendai, Japan
| | - Yu Katayose
- Division of Hepato-Biliary-Pancreatic Surgery; Department of Surgery; Tohoku University Graduate School of Medicine; Sendai, Japan
- Division of Integrated Surgery and Oncology; Tohoku University Graduate School of Medicine; Sendai, Japan
| | - Tetsuya Kodama
- Department of Biomedical Engineering; Graduate School of Biomedical Engineering; Tohoku University; Sendai, Japan
| | - Shinichi Egawa
- Division of International Cooperation for Disaster Medicine; International Research Institute of Disaster Science; Tohoku University; Sendai, Japan
| | - Michiaki Unno
- Division of Hepato-Biliary-Pancreatic Surgery; Department of Surgery; Tohoku University Graduate School of Medicine; Sendai, Japan
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10
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Li L, Jiang W, Luo K, Song H, Lan F, Wu Y, Gu Z. Superparamagnetic iron oxide nanoparticles as MRI contrast agents for non-invasive stem cell labeling and tracking. Am J Cancer Res 2013; 3:595-615. [PMID: 23946825 PMCID: PMC3741608 DOI: 10.7150/thno.5366] [Citation(s) in RCA: 287] [Impact Index Per Article: 26.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Accepted: 12/12/2012] [Indexed: 12/21/2022] Open
Abstract
Stem cells hold great promise for the treatment of multiple human diseases and disorders. Tracking and monitoring of stem cells in vivo after transplantation can supply important information for determining the efficacy of stem cell therapy. Magnetic resonance imaging (MRI) combined with contrast agents is believed to be the most effective and safest non-invasive technique for stem cell tracking in living bodies. Commercial superparamagnetic iron oxide nanoparticles (SPIONs) in the aid of transfection agents (TAs) have been applied to labeling stem cells. However, owing to the potential toxicity of TAs, more attentions have been paid to develop novel SPIONs with specific surface coating or functional moieties which facilitate effective cell internalization in the absence of TAs. This review aims to summarize the recent progress in the design and preparation of SPIONs as cellular MRI probes, to discuss their applications and current problems facing in stem cell labeling and tracking, and to offer perspectives and solutions for the future development of SPIONs in this field.
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Mettler E, Trenkler A, Feilen PJ, Wiegand F, Fottner C, Ehrhart F, Zimmermann H, Hwang YH, Lee DY, Fischer S, Schreiber LM, Weber MM. Magnetic separation of encapsulated islet cells labeled with superparamagnetic iron oxide nano particles. Xenotransplantation 2013; 20:219-26. [PMID: 23789985 DOI: 10.1111/xen.12042] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2012] [Accepted: 05/18/2013] [Indexed: 11/28/2022]
Abstract
Islet cell transplantation is a promising option for the restoration of normal glucose homeostasis in patients with type 1 diabetes. Because graft volume is a crucial issue in islet transplantations for patients with diabetes, we evaluated a new method for increasing functional tissue yield in xenogeneic grafts of encapsulated islets. Islets were labeled with three different superparamagnetic iron oxide nano particles (SPIONs; dextran-coated SPION, siloxane-coated SPION, and heparin-coated SPION). Magnetic separation was performed to separate encapsulated islets from the empty capsules, and cell viability and function were tested. Islets labeled with 1000 μg Fe/ml dextran-coated SPIONs experienced a 69.9% reduction in graft volume, with a 33.2% loss of islet-containing capsules. Islets labeled with 100 μg Fe/ml heparin-coated SPIONs showed a 46.4% reduction in graft volume, with a 4.5% loss of capsules containing islets. No purification could be achieved using siloxane-coated SPIONs due to its toxicity to the primary islets. SPION labeling of islets is useful for transplant purification during islet separation as well as in vivo imaging after transplantation. Furthermore, purification of encapsulated islets can also reduce the volume of the encapsulated islets without impairing their function by removing empty capsules.
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Affiliation(s)
- Esther Mettler
- Endocrinology and Metabolic Diseases, University Medical Center, Johannes Gutenberg University Mainz, Germany.
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12
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The role of exendin-4-conjugated superparamagnetic iron oxide nanoparticles in beta-cell-targeted MRI. Biomaterials 2013; 34:5843-52. [PMID: 23642536 DOI: 10.1016/j.biomaterials.2013.04.021] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Accepted: 04/10/2013] [Indexed: 11/24/2022]
Abstract
Noninvasive targeted visualization of pancreatic beta cells or islets is becoming the focus of molecular imaging application in diabetes and islet transplantation studies, but it is currently unsuccessful due to the lack of specific beta cell biomarkers. Glucagon-like peptide 1 receptor (GLP-1R) is highly expressed in beta cells and considered as a promising target. We here developed a targeted superparamagnetic iron oxide (SPIO) nanoparticle using GLP-1 analog-exendin-4 which is conjugated to polyethylene glycol coated SPIO (PEG-SPIO). The results demonstrated that exendin-4 functionalized SPIO was able to specifically bind to and internalized by GLP-1R-expressing INS-1 cells, with the higher labeling efficiency than non-targeted nanoparticles. Notably, SPIO-exendin4 could differentially label islets in pancreatic slices or beta cell grafts in vitro. Systemic delivery of SPIO-exendin4 into nude mice bearing s.c. insulinomas (derived from INS-1 cells) leads to the accumulation of the nanoparticles in tumors, generating a strong magnetic resonance imaging contrast detectable by a clinical MRI scanner at field strength of 3.0 T, and the iron deposition in tumors was further confirmed by Prussian blue staining. Furthermore, preliminary biodistribution study indicated that SPIO-exendin4 had a tendency to accumulate in pancreas. Toxicity assessments demonstrated good biocompatibility in vivo. These results suggest that SPIO-exendin4 has potential as molecularly targeted imaging agents for in vivo imaging of insulinoma, and possibly for future beta cell imaging.
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Wang Z, Cuschieri A. Tumour cell labelling by magnetic nanoparticles with determination of intracellular iron content and spatial distribution of the intracellular iron. Int J Mol Sci 2013; 14:9111-25. [PMID: 23624604 PMCID: PMC3676776 DOI: 10.3390/ijms14059111] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2013] [Revised: 03/26/2013] [Accepted: 04/02/2013] [Indexed: 01/26/2023] Open
Abstract
Magnetically labelled cells are used for in vivo cell tracking by MRI, used for the clinical translation of cell-base therapies. Studies involving magnetic labelled cells may include separation of labelled cells, targeted delivery and controlled release of drugs, contrast enhanced MRI and magnetic hyperthermia for the in situ ablation of tumours. Dextran-coated super-paramagnetic iron oxide (SPIO) ferumoxides are used clinically as an MR contrast agents primarily for hepatic imaging. The material is also widely used for in vitro cell labelling, as are other SPIO-based particles. Our results on the uptake by human cancer cell lines of ferumoxides indicate that electroporation in the presence of protamine sulphate (PS) results in rapid high uptake of SPIO nanoparticles (SPIONs) by parenchymal tumour cells without significant impairment of cell viability. Quantitative determination of cellular iron uptake performed by colorimetric assay is in agreement with data from the literature. These results on intracellular iron content together with the intracellular distribution of SPIONs by magnetic force microscopy (MFM) following in vitro uptake by parenchymal tumour cells confirm the potential of this technique for clinical tumour cell detection and destruction.
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Affiliation(s)
- Zhigang Wang
- Authors to whom correspondence should be addressed; E-Mails: (Z.W.); (A.C.); Tel.: +44-1382-381-030 (Z.W.); +44-1382-381-009 (A.C.); Fax: +44-1382-386-588 (Z.W. & A.C.)
| | - Alfred Cuschieri
- Authors to whom correspondence should be addressed; E-Mails: (Z.W.); (A.C.); Tel.: +44-1382-381-030 (Z.W.); +44-1382-381-009 (A.C.); Fax: +44-1382-386-588 (Z.W. & A.C.)
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14
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Current world literature. Curr Opin Organ Transplant 2013; 18:111-30. [PMID: 23299306 DOI: 10.1097/mot.0b013e32835daf68] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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15
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Kim HS, Tian L, Lin S, Cha JH, Jung HS, Park KS, Moon WK. Magnetic labeling of pancreaticβ-cells modulates the glucose- and insulin-induced phosphorylation of ERK1/2 and AKT. CONTRAST MEDIA & MOLECULAR IMAGING 2012; 8:20-6. [DOI: 10.1002/cmmi.1490] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Hoe Suk Kim
- Department of Radiology; Seoul National University Hospital; 101 Daehangno, Jongno-gu Seoul 110-744 Korea
- Institute of Radiation Medicine, Medical Research Center; Seoul National University; 101 Daehangno, Jongno-gu Seoul 110-744 Korea
| | - Lianji Tian
- Department of Radiology; Seoul National University Hospital; 101 Daehangno, Jongno-gu Seoul 110-744 Korea
- Department of Biomedical Science, College of Medicine; Seoul National University; Seoul, 101 Daehangno, Jongno-gu Seoul 110-744 Korea
| | - Shunmei Lin
- Department of Radiology; Seoul National University Hospital; 101 Daehangno, Jongno-gu Seoul 110-744 Korea
| | - Joo Hee Cha
- Department of Radiology; Seoul National University Hospital; 101 Daehangno, Jongno-gu Seoul 110-744 Korea
| | - Hye Seung Jung
- Department of Internal Medicine; Seoul National University Hospital; 101 Daehangno, Jongno-gu Seoul 110-744 Korea
| | - Kyong Soo Park
- Department of Internal Medicine; Seoul National University Hospital; 101 Daehangno, Jongno-gu Seoul 110-744 Korea
| | - Woo Kyung Moon
- Department of Radiology; Seoul National University Hospital; 101 Daehangno, Jongno-gu Seoul 110-744 Korea
- Institute of Radiation Medicine, Medical Research Center; Seoul National University; 101 Daehangno, Jongno-gu Seoul 110-744 Korea
- Department of Biomedical Science, College of Medicine; Seoul National University; Seoul, 101 Daehangno, Jongno-gu Seoul 110-744 Korea
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