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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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Arifin DR, Bulte JWM. In Vivo Imaging of Naked and Microencapsulated Islet Cell Transplantation. Methods Mol Biol 2023; 2592:75-88. [PMID: 36507986 PMCID: PMC10437091 DOI: 10.1007/978-1-0716-2807-2_5] [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] [Indexed: 12/14/2022]
Abstract
We describe step-by-step methods to label human pancreatic islet cells and murine insulinoma cells and their subsequent transplantation into type I diabetic mouse models with a focus on in vivo imaging using clinically applicable scanners. We also cover islets that are microencapsulated within alginate hydrogels loaded with imaging agents. By following these methods, it is possible to image cell grafts using T1-weighted and T2/T2*-weighted 1H magnetic resonance imaging (MRI), 19F MRI, computed tomography, ultrasound imaging, and bioluminescence imaging in vivo. Considering a myriad of factors that may affect the outcome of proper in vivo detection, we discuss potential issues that may be encountered during and after the process of labeling. The ultimate goal is to use these in vivo imaging approaches to determine and optimize naked and encapsulated islet cell survival, therapeutic function, and engraftment procedures.
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Affiliation(s)
- Dian R Arifin
- Russell H. Morgan Department of Radiology and Radiological Science, Division of MR Research, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Cellular Imaging Section and Vascular Biology Program, Institute for Cell Engineering, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Jeff W M Bulte
- Russell H. Morgan Department of Radiology and Radiological Science, Division of MR Research, The Johns Hopkins University School of Medicine, Baltimore, MD, USA.
- Cellular Imaging Section and Vascular Biology Program, Institute for Cell Engineering, The Johns Hopkins University School of Medicine, Baltimore, MD, USA.
- Department of Chemical & Biomolecular Engineering, The Johns Hopkins University School of Medicine, Baltimore, MD, USA.
- Department of Biomedical Engineering, The Johns Hopkins University School of Medicine, Baltimore, MD, USA.
- Department of Oncology, The Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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Revete A, Aparicio A, Cisterna BA, Revete J, Luis L, Ibarra E, Segura González EA, Molino J, Reginensi D. Advancements in the Use of Hydrogels for Regenerative Medicine: Properties and Biomedical Applications. Int J Biomater 2022; 2022:3606765. [PMID: 36387956 PMCID: PMC9663251 DOI: 10.1155/2022/3606765] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Revised: 08/29/2022] [Accepted: 10/05/2022] [Indexed: 07/29/2023] Open
Abstract
Due to their particular water absorption capacity, hydrogels are the most widely used scaffolds in biomedical studies to regenerate damaged tissue. Hydrogels can be used in tissue engineering to design scaffolds for three-dimensional cell culture, providing a novel alternative to the traditional two-dimensional cell culture as hydrogels have a three-dimensional biomimetic structure. This material property is crucial in regenerative medicine, especially for the nervous system, since it is a highly complex and delicate structure. Hydrogels can move quickly within the human body without physically disturbing the environment and possess essential biocompatible properties, as well as the ability to form a mimetic scaffold in situ. Therefore, hydrogels are perfect candidates for biomedical applications. Hydrogels represent a potential alternative to regenerating tissue lost after removing a brain tumor and/or brain injuries. This reason presents them as an exciting alternative to highly complex human physiological problems, such as injuries to the central nervous system and neurodegenerative disease.
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Affiliation(s)
- Andrea Revete
- Biological Engineering, Faculty of Biosciences and Public Health, Universidad Especializada de las Americas (UDELAS), Panama City, Panama
- Biomedical Engineering, Faculty of Health Sciences and Engineering, Universidad Latina de Panama (ULATINA), Panama City, Panama
| | - Andrea Aparicio
- Biological Engineering, Faculty of Biosciences and Public Health, Universidad Especializada de las Americas (UDELAS), Panama City, Panama
| | - Bruno A. Cisterna
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Javier Revete
- Experimentia S.A, Development of Innovative Strategies in Biomedicine and Sustainable Development, Panama, Panama
| | - Luis Luis
- Experimentia S.A, Development of Innovative Strategies in Biomedicine and Sustainable Development, Panama, Panama
| | - Ernesto Ibarra
- Biomedical Engineering, Faculty of Health Sciences and Engineering, Universidad Latina de Panama (ULATINA), Panama City, Panama
| | | | - Jay Molino
- Biological Engineering, Faculty of Biosciences and Public Health, Universidad Especializada de las Americas (UDELAS), Panama City, Panama
| | - Diego Reginensi
- Biological Engineering, Faculty of Biosciences and Public Health, Universidad Especializada de las Americas (UDELAS), Panama City, Panama
- Biomedical Engineering, Faculty of Health Sciences and Engineering, Universidad Latina de Panama (ULATINA), Panama City, Panama
- Integrative Neurobiology, School of Medicine, Universidad de Panama (UP), Panama, Panama
- Center for Biodiversity and Drug Discovery, INDICASAT-AIP, City of Knowledge, Panama, Panama
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Abstract
The successful transplantation of stem cells has the potential to transform regenerative medicine approaches and open promising avenues to repair, replace, and regenerate diseased, damaged, or aged tissues. However, pre-/post-transplantation issues of poor cell survival, retention, cell fate regulation, and insufficient integration with host tissues constitute significant challenges. The success of stem cell transplantation depends upon the coordinated sequence of stem cell renewal, specific lineage differentiation, assembly, and maintenance of long-term function. Advances in biomaterials can improve pre-/post-transplantation outcomes by integrating biophysiochemical cues and emulating tissue microenvironments. This review highlights leading biomaterials-based approaches for enhancing stem cell transplantation.
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Affiliation(s)
- Bhushan N Kharbikar
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Priya Mohindra
- UC Berkeley-UCSF Graduate Program in Bioengineering, San Francisco, CA 94158, USA
| | - Tejal A Desai
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA 94158, USA; UC Berkeley-UCSF Graduate Program in Bioengineering, San Francisco, CA 94158, USA; Department of Bioengineering, University of California, Berkeley, Berkeley, CA 94720, USA; School of Engineering, Brown University, Providence, RI, 02912, USA.
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Zhang Y, Gallego I, Plou J, Pedraz JL, Liz-Marzán LM, Ciriza J, García I. SERS monitoring of local pH in encapsulated therapeutic cells. NANOSCALE 2021; 13:14354-14362. [PMID: 34477718 DOI: 10.1039/d1nr03969e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Microencapsulation of therapeutic cells has widely advanced toward the development of treatments for various diseases, in particular seeking the protection of cell transplants from immune rejection. However, several challenges in cell therapy remain due to the lack of suitable methods to monitor in vivo microcapsule tracking, microcapsule stability and/or altered cell viability and proliferation upon transplantation. We propose in this work the incorporation of contrast agents in microcapsules, which can be easily visualized by SERS imaging. By placing SERS probes in the alginate extracellular layer, a high contrast can be obtained with negligible toxicity. Specifically, we used a pH-sensitive SERS tracking probe consisting of gold nanostars encoded with a pH-sensitive Raman-active molecule, and protected by a layer of biocompatible polymer coating, grafted on the nanoparticles via electrostatic interactions. This nanomaterial is highly sensitive within the biologically relevant pH range, 5.5-7.8. We demonstrate that this SERS-based pH sensor can provide information about cell death of microencapsulated cells, in a non-invasive manner. As a result, we expect that this approach should provide a general strategy to study biological interactions at the microcapsule level.
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Affiliation(s)
- Yizhi Zhang
- CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), Paseo de Miramon 182, 20014, Donostia San Sebastián, Spain
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Arifin DR, Bulte JWM. In Vivo Imaging of Pancreatic Islet Grafts in Diabetes Treatment. Front Endocrinol (Lausanne) 2021; 12:640117. [PMID: 33737913 PMCID: PMC7961081 DOI: 10.3389/fendo.2021.640117] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 01/25/2021] [Indexed: 12/22/2022] Open
Abstract
Transplantation of pancreatic islets has potential to offer life-long blood glucose management in type I diabetes and severe type II diabetes without the need of exogenous insulin administration. However, islet cell therapy suffers from autoimmune and allogeneic rejection as well as non-immune related factors. Non-invasive techniques to monitor and evaluate the fate of cell implants in vivo are essential to understand the underlying causes of graft failure, and hence to improve the precision and efficacy of islet therapy. This review describes how imaging technology has been employed to interrogate the distribution, number or volume, viability, and function of islet implants in vivo. To date, fluorescence imaging, PET, SPECT, BLI, MRI, MPI, and ultrasonography are the many imaging modalities being developed to fulfill this endeavor. We outline here the advantages, limitations, and clinical utility of each particular imaging approach.
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Affiliation(s)
- Dian R. Arifin
- Department of Radiology and Radiological Sciences, School of Medicine, Johns Hopkins University, Baltimore, MD, United States
- Institute for Cell Engineering, School of Medicine, Johns Hopkins University, Baltimore, MD, United States
| | - Jeff W. M. Bulte
- Department of Radiology and Radiological Sciences, School of Medicine, Johns Hopkins University, Baltimore, MD, United States
- Institute for Cell Engineering, School of Medicine, Johns Hopkins University, Baltimore, MD, United States
- Department of Oncology, School of Medicine, Johns Hopkins University, Baltimore, MD, United States
- Department of Chemical and Biomolecular Engineering, Whiting School of Engineering, Johns Hopkins University, Baltimore, MD, United States
- Department of Biomedical Engineering, School of Medicine, Johns Hopkins University, Baltimore, MD, United States
- *Correspondence: Jeff W. M. Bulte,
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Helfer BM, Bulte JW. Cell Surveillance Using Magnetic Resonance Imaging. Mol Imaging 2021. [DOI: 10.1016/b978-0-12-816386-3.00042-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Kolouchova K, Jirak D, Groborz O, Sedlacek O, Ziolkowska N, Vit M, Sticova E, Galisova A, Svec P, Trousil J, Hajek M, Hruby M. Implant-forming polymeric 19F MRI-tracer with tunable dissolution. J Control Release 2020; 327:50-60. [PMID: 32730953 DOI: 10.1016/j.jconrel.2020.07.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 07/13/2020] [Accepted: 07/15/2020] [Indexed: 12/29/2022]
Abstract
Magnetic resonance imaging (MRI) using 19F-based tracers has emerged as a promising multi-purpose noninvasive diagnostic tool and its application requires the use of various 19F-based tracers for the intended diagnostic purpose. In this study, we report a series of double-stimuli-responsive polymers for use as injectable implants, which were designed to form implants under physiological conditions, and to subsequently dissolve with different dissolution rates (t1/2 ranges from 30 to more than 250 days). Our polymers contain a high concentration of fluorine atoms, providing remarkable signal detectability, and both a hydrophilic monomer and a pH-responsive monomer that alter the biodistribution properties of the implant. The implant location and dissolution were observed using 19F MRI, which allows the anatomic extent of the implant to be monitored. The dissolution kinetics and biocompatibility of these materials were thoroughly analyzed. No sign of toxicity in vitro or in vivo or pathology in vivo was observed, even in chronic administration. The clinical applicability of our polymers was further confirmed via imaging of a rat model by employing an instrument currently used in human medicine.
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Affiliation(s)
- Kristyna Kolouchova
- Institute of Macromolecular Chemistry CAS, Heyrovsky Square 2, 162 06 Prague 6, Czech Republic; Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 8, Prague 2 128 00, Czech Republic
| | - Daniel Jirak
- Department of Diagnostic and Interventional Radiology, Institute for Clinical and Experimental Medicine, Videnska 1958/9, 140 21 Prague 4, Czech Republic; Department of Science and Research, Faculty of Health Studies, Technical University of Liberec, Studentska 1402/2, 461 17 Liberec, Czech Republic.
| | - Ondrej Groborz
- Institute of Macromolecular Chemistry CAS, Heyrovsky Square 2, 162 06 Prague 6, Czech Republic; Department of Organic Chemistry, Charles University, Faculty of Science, Hlavova 8, 128 43 Prague 2, Czech Republic; Institute of Biophysics and Informatics, Charles University, First Faculty of Medicine, Salmovská 1, 120 00 Prague 2, Czech Republic; Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo square 542/2, 162 06 Prague 6, Czech Republic
| | - Ondrej Sedlacek
- Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, 9000 Ghent, Belgium
| | - Natalia Ziolkowska
- Department of Diagnostic and Interventional Radiology, Institute for Clinical and Experimental Medicine, Videnska 1958/9, 140 21 Prague 4, Czech Republic; Institute of Biophysics and Informatics, Charles University, First Faculty of Medicine, Salmovská 1, 120 00 Prague 2, Czech Republic
| | - Martin Vit
- Department of Diagnostic and Interventional Radiology, Institute for Clinical and Experimental Medicine, Videnska 1958/9, 140 21 Prague 4, Czech Republic; Technical University of Liberec, Faculty of Mechatronics Informatics and Interdisciplinary Studies, Studentska 1402/2, 461 17 Liberec, Czech Republic
| | - Eva Sticova
- Department of Diagnostic and Interventional Radiology, Institute for Clinical and Experimental Medicine, Videnska 1958/9, 140 21 Prague 4, Czech Republic
| | - Andrea Galisova
- Department of Diagnostic and Interventional Radiology, Institute for Clinical and Experimental Medicine, Videnska 1958/9, 140 21 Prague 4, Czech Republic
| | - Pavel Svec
- Institute of Macromolecular Chemistry CAS, Heyrovsky Square 2, 162 06 Prague 6, Czech Republic; Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 8, Prague 2 128 00, Czech Republic
| | - Jiri Trousil
- Institute of Macromolecular Chemistry CAS, Heyrovsky Square 2, 162 06 Prague 6, Czech Republic
| | - Milan Hajek
- Department of Diagnostic and Interventional Radiology, Institute for Clinical and Experimental Medicine, Videnska 1958/9, 140 21 Prague 4, Czech Republic
| | - Martin Hruby
- Institute of Macromolecular Chemistry CAS, Heyrovsky Square 2, 162 06 Prague 6, Czech Republic.
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