1
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Grattoni A, Korbutt G, Tomei AA, García AJ, Pepper AR, Stabler C, Brehm M, Papas K, Citro A, Shirwan H, Millman JR, Melero-Martin J, Graham M, Sefton M, Ma M, Kenyon N, Veiseh O, Desai TA, Nostro MC, Marinac M, Sykes M, Russ HA, Odorico J, Tang Q, Ricordi C, Latres E, Mamrak NE, Giraldo J, Poznansky MC, de Vos P. Harnessing cellular therapeutics for type 1 diabetes mellitus: progress, challenges, and the road ahead. Nat Rev Endocrinol 2024:10.1038/s41574-024-01029-0. [PMID: 39227741 DOI: 10.1038/s41574-024-01029-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/06/2024] [Indexed: 09/05/2024]
Abstract
Type 1 diabetes mellitus (T1DM) is a growing global health concern that affects approximately 8.5 million individuals worldwide. T1DM is characterized by an autoimmune destruction of pancreatic β cells, leading to a disruption in glucose homeostasis. Therapeutic intervention for T1DM requires a complex regimen of glycaemic monitoring and the administration of exogenous insulin to regulate blood glucose levels. Advances in continuous glucose monitoring and algorithm-driven insulin delivery devices have improved the quality of life of patients. Despite this, mimicking islet function and complex physiological feedback remains challenging. Pancreatic islet transplantation represents a potential functional cure for T1DM but is hindered by donor scarcity, variability in harvested cells, aggressive immunosuppressive regimens and suboptimal clinical outcomes. Current research is directed towards generating alternative cell sources, improving transplantation methods, and enhancing cell survival without chronic immunosuppression. This Review maps the progress in cell replacement therapies for T1DM and outlines the remaining challenges and future directions. We explore the state-of-the-art strategies for generating replenishable β cells, cell delivery technologies and local targeted immune modulation. Finally, we highlight relevant animal models and the regulatory aspects for advancing these technologies towards clinical deployment.
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Affiliation(s)
- Alessandro Grattoni
- Department of Nanomedicine, Houston Methodist Research Institute, Houston, TX, USA.
- Department of Surgery, Houston Methodist Hospital, Houston, TX, USA.
- Department of Radiation Oncology, Houston Methodist Hospital, Houston, TX, USA.
| | - Gregory Korbutt
- Alberta Diabetes Institute, University of Alberta, Edmonton, Alberta, Canada
- Department of Surgery, University of Alberta, Edmonton, Alberta, Canada
| | - Alice A Tomei
- Diabetes Research Institute, University of Miami Miller School of Medicine, Miami, FL, USA
- Department of Biomedical Engineering, University of Miami, Miami, FL, USA
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
- Department of Microbiology and Immunology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Andrés J García
- Woodruff School of Mechanical Engineering and Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, USA
| | - Andrew R Pepper
- Department of Surgery, University of Alberta, Edmonton, Alberta, Canada
| | - Cherie Stabler
- J. Crayton Pruitt Family Department of Biomedical Engineering, Herbert Wertheim College of Engineering, University of Florida, Gainesville, FL, USA
- Diabetes Institute, University of Florida, Gainesville, FL, USA
| | - Michael Brehm
- Program in Molecular Medicine, Diabetes Center of Excellence, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Klearchos Papas
- Department of Surgery, The University of Arizona, Tucson, AZ, USA
| | - Antonio Citro
- Diabetes Research Institute, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Haval Shirwan
- Department of Pediatrics, Ellis Fischel Cancer Center, School of Medicine, University of Missouri, Columbia, MO, USA
| | - Jeffrey R Millman
- Division of Endocrinology, Metabolism and Lipid Research, Washington University School of Medicine, St. Louis, MO, USA
- Department of Biomedical Engineering, Washington University in St. Louis, St. Louis, MO, USA
| | - Juan Melero-Martin
- Department of Cardiac Surgery, Boston Children's Hospital, Boston, MA, USA
- Department of Surgery, Harvard Medical School, Boston, MA, USA
- Harvard Stem Cell Institute, Cambridge, MA, USA
| | - Melanie Graham
- Department of Surgery, University of Minnesota, Minneapolis, MN, USA
- Department of Veterinary Population Medicine, University of Minnesota, St. Paul, MN, USA
| | - Michael Sefton
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, Canada
| | - Minglin Ma
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY, USA
| | - Norma Kenyon
- Diabetes Research Institute, University of Miami Miller School of Medicine, Miami, FL, USA
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Omid Veiseh
- Department of Bioengineering, Rice University, Houston, TX, USA
| | - Tejal A Desai
- University of California, San Francisco, Department of Bioengineering and Therapeutic Sciences, San Francisco, CA, USA
- Brown University, School of Engineering, Providence, RI, USA
| | - M Cristina Nostro
- McEwen Stem Cell Institute, University Health Network, Toronto, ON, Canada
- Department of Physiology, University of Toronto, Toronto, ON, Canada
| | | | - Megan Sykes
- Department of Medicine, Columbia Center for Translational Immunology, Columbia University, New York, NY, USA
- Department of Microbiology and Immunology, Columbia University, New York, NY, USA
- Department of Surgery, Columbia University, New York, NY, USA
| | - Holger A Russ
- Diabetes Institute, University of Florida, Gainesville, FL, USA
- Department of Pharmacology and Therapeutics, University of Florida, Gainesville, FL, USA
| | - Jon Odorico
- UW Health Transplant Center, Madison, WI, USA
- Division of Transplantation, Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Qizhi Tang
- Diabetes Center, University of California San Francisco, San Francisco, CA, USA
- Department of Surgery, University of California San Francisco, San Francisco, CA, US
- Gladstone Institute of Genomic Immunology, University of California San Francisco, San Francisco, CA, USA
| | - Camillo Ricordi
- Diabetes Research Institute, University of Miami Miller School of Medicine, Miami, FL, USA
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Esther Latres
- Research Department, Breakthrough T1D, New York, NY, USA
| | | | - Jaime Giraldo
- Research Department, Breakthrough T1D, New York, NY, USA.
| | - Mark C Poznansky
- Vaccine and Immunotherapy Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA.
| | - Paul de Vos
- Immunoendocrinology, Division of Medical Biology, Department of Pathology and Medical Biology, University of Groningen and University Medical Center Groningen, Groningen, Netherlands.
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2
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Lu K, Brauns T, Sluder AE, Poznansky MC, Dogan F. Combinatorial islet protective therapeutic approaches in β-cell transplantation: Rationally designed solutions using a target product profile. FASEB Bioadv 2023; 5:287-304. [PMID: 37415930 PMCID: PMC10320848 DOI: 10.1096/fba.2023-00029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 05/03/2023] [Accepted: 05/17/2023] [Indexed: 07/08/2023] Open
Abstract
While progress has been made in the development of islet cell transplantation (ICT) as a viable alternative to the use of exogenous insulin therapy in the treatment of type 1 diabetes, it has not yet achieved its full potential in clinical studies. Ideally, ICT would enable lifelong maintenance of euglycemia without the need for exogenous insulin, blood glucose monitoring or systemic immune suppression. To achieve such an optimal result, therapeutic approaches should simultaneously promote long-term islet viability, functionality, and localized immune protection. In practice, however, these factors are typically tackled individually. Furthermore, while the requirements of optimal ICT are implicitly acknowledged across numerous publications, the literature contains few comprehensive articulations of the target product profile (TPP) for an optimal ICT product, including key characteristics of safety and efficacy. This review aims to provide a novel TPP for ICT and presents promising tried and untried combinatorial approaches that could be used to achieve the target product profile. We also highlight regulatory barriers to the development and adoption of ICT, particularly in the United States, where ICT is only approved for use in academic clinical trials and is not reimbursed by insurance carriers. Overall, this review argues that the clear definition of a TPP in addition to the use of combinatorial approaches could help to overcome the clinical barriers to the widespread adoption of ICT for the treatment of type 1 diabetes.
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Affiliation(s)
- Katie Lu
- Vaccine and Immunotherapy CenterMassachusetts General HospitalBostonMassachusettsUSA
- Department of BiologyStanford UniversityStanfordCaliforniaUSA
| | - Timothy Brauns
- Vaccine and Immunotherapy CenterMassachusetts General HospitalBostonMassachusettsUSA
| | - Ann E. Sluder
- Vaccine and Immunotherapy CenterMassachusetts General HospitalBostonMassachusettsUSA
| | - Mark C. Poznansky
- Vaccine and Immunotherapy CenterMassachusetts General HospitalBostonMassachusettsUSA
| | - Fatma Dogan
- Vaccine and Immunotherapy CenterMassachusetts General HospitalBostonMassachusettsUSA
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3
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Jeyagaran A, Lu CE, Zbinden A, Birkenfeld AL, Brucker SY, Layland SL. Type 1 diabetes and engineering enhanced islet transplantation. Adv Drug Deliv Rev 2022; 189:114481. [PMID: 36002043 PMCID: PMC9531713 DOI: 10.1016/j.addr.2022.114481] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 08/01/2022] [Accepted: 08/02/2022] [Indexed: 01/24/2023]
Abstract
The development of new therapeutic approaches to treat type 1 diabetes mellitus (T1D) relies on the precise understanding and deciphering of insulin-secreting β-cell biology, as well as the mechanisms responsible for their autoimmune destruction. β-cell or islet transplantation is viewed as a potential long-term therapy for the millions of patients with diabetes. To advance the field of insulin-secreting cell transplantation, two main research areas are currently investigated by the scientific community: (1) the identification of the developmental pathways that drive the differentiation of stem cells into insulin-producing cells, providing an inexhaustible source of cells; and (2) transplantation strategies and engineered transplants to provide protection and enhance the functionality of transplanted cells. In this review, we discuss the biology of pancreatic β-cells, pathology of T1D and current state of β-cell differentiation. We give a comprehensive view and discuss the different possibilities to engineer enhanced insulin-secreting cell/islet transplantation from a translational perspective.
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Affiliation(s)
- Abiramy Jeyagaran
- Institute of Biomedical Engineering, Department for Medical Technologies and Regenerative Medicine, Eberhard Karls University Tübingen, 72076 Tübingen, Germany; NMI Natural and Medical Sciences Institute at the University Tübingen, 72770 Reutlingen, Germany
| | - Chuan-En Lu
- Institute of Biomedical Engineering, Department for Medical Technologies and Regenerative Medicine, Eberhard Karls University Tübingen, 72076 Tübingen, Germany
| | - Aline Zbinden
- Department of Immunology, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands
| | - Andreas L Birkenfeld
- Department of Internal Medicine IV, University Hospital Tübingen, Tübingen, Germany; Institute for Diabetes Research and Metabolic Diseases (IDM) of the Helmholtz Center Munich at the University of Tübingen, German Center for Diabetes Research (DZD e.V.), Munich, Germany
| | - Sara Y Brucker
- Department of Women's Health, Eberhard Karls University, 72076 Tübingen, Germany
| | - Shannon L Layland
- Institute of Biomedical Engineering, Department for Medical Technologies and Regenerative Medicine, Eberhard Karls University Tübingen, 72076 Tübingen, Germany; Department of Women's Health, Eberhard Karls University, 72076 Tübingen, Germany.
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4
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Wang W, Teng Y, Xue JJ, Cai HK, Pan YB, Ye XN, Mao XL, Li SW. Nanotechnology in Kidney and Islet Transplantation: An Ongoing, Promising Field. Front Immunol 2022; 13:846032. [PMID: 35464482 PMCID: PMC9024121 DOI: 10.3389/fimmu.2022.846032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Accepted: 03/08/2022] [Indexed: 11/21/2022] Open
Abstract
Organ transplantation has evolved rapidly in recent years as a reliable option for patients with end-stage organ failure. However, organ shortage, surgical risks, acute and chronic rejection reactions and long-term immunosuppressive drug applications and their inevitable side effects remain extremely challenging problems. The application of nanotechnology in medicine has proven highly successful and has unique advantages for diagnosing and treating diseases compared to conventional methods. The combination of nanotechnology and transplantation brings a new direction of thinking to transplantation medicine. In this article, we provide an overview of the application and progress of nanotechnology in kidney and islet transplantation, including nanotechnology for renal pre-transplantation preservation, artificial biological islets, organ imaging and drug delivery.
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Affiliation(s)
- Wei Wang
- Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, China
| | - Ya Teng
- Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, China
| | - Ji-Ji Xue
- Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, China
| | - Hong-Kai Cai
- Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, China
| | - Yu-Biao Pan
- Taizhou Hospital of Zhejiang Province, Zhejiang University, Linhai, China
| | - Xing-Nan Ye
- Taizhou Hospital of Zhejiang Province, Shaoxing University, Linhai, China
| | - Xin-Li Mao
- Key Laboratory of Minimally Invasive Techniques and Rapid Rehabilitation of Digestive System Tumor of Zhejiang Province, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, China
- Department of Gastroenterology, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, China
- Institute of Digestive Disease, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, China
- *Correspondence: Xin-Li Mao, ; Shao-Wei Li,
| | - Shao-Wei Li
- Key Laboratory of Minimally Invasive Techniques and Rapid Rehabilitation of Digestive System Tumor of Zhejiang Province, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, China
- Department of Gastroenterology, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, China
- Institute of Digestive Disease, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, China
- *Correspondence: Xin-Li Mao, ; Shao-Wei Li,
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5
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Samojlik MM, Stabler CL. Designing biomaterials for the modulation of allogeneic and autoimmune responses to cellular implants in Type 1 Diabetes. Acta Biomater 2021; 133:87-101. [PMID: 34102338 PMCID: PMC9148663 DOI: 10.1016/j.actbio.2021.05.039] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 05/05/2021] [Accepted: 05/20/2021] [Indexed: 12/15/2022]
Abstract
The effective suppression of adaptive immune responses is essential for the success of allogeneic cell therapies. In islet transplantation for Type 1 Diabetes, pre-existing autoimmunity provides an additional hurdle, as memory autoimmune T cells mediate both an autoantigen-specific attack on the donor beta cells and an alloantigen-specific attack on the donor graft cells. Immunosuppressive agents used for islet transplantation are generally successful in suppressing alloimmune responses, but dramatically hinder the widespread adoption of this therapeutic approach and fail to control memory T cell populations, which leaves the graft vulnerable to destruction. In this review, we highlight the capacity of biomaterials to provide local and nuanced instruction to suppress or alter immune pathways activated in response to an allogeneic islet transplant. Biomaterial immunoisolation is a common approach employed to block direct antigen recognition and downstream cell-mediated graft destruction; however, immunoisolation alone still permits shed donor antigens to escape into the host environment, resulting in indirect antigen recognition, immune cell activation, and the creation of a toxic graft site. Designing materials to decrease antigen escape, improve cell viability, and increase material compatibility are all approaches that can decrease the local release of antigen and danger signals into the implant microenvironment. Implant materials can be further enhanced through the local delivery of anti-inflammatory, suppressive, chemotactic, and/or tolerogenic agents, which serve to control both the innate and adaptive immune responses to the implant with a benefit of reduced systemic effects. Lessons learned from understanding how to manipulate allogeneic and autogenic immune responses to pancreatic islets can also be applied to other cell therapies to improve their efficacy and duration. STATEMENT OF SIGNIFICANCE: This review explores key immunologic concepts and critical pathways mediating graft rejection in Type 1 Diabetes, which can instruct the future purposeful design of immunomodulatory biomaterials for cell therapy. A summary of immunological pathways initiated following cellular implantation, as well as current systemic immunomodulatory agents used, is provided. We then outline the potential of biomaterials to modulate these responses. The capacity of polymeric encapsulation to block some powerful rejection pathways is covered. We also highlight the role of cellular health and biocompatibility in mitigating immune responses. Finally, we review the use of bioactive materials to proactively modulate local immune responses, focusing on key concepts of anti-inflammatory, suppressive, and tolerogenic agents.
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Affiliation(s)
- Magdalena M Samojlik
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA
| | - Cherie L Stabler
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA; University of Florida Diabetes Institute, Gainesville, FL, USA; Graduate Program in Biomedical Sciences, College of Medicine, University of Florida, Gainesville, FL, USA.
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6
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Ghasemi A, Akbari E, Imani R. An Overview of Engineered Hydrogel-Based Biomaterials for Improved β-Cell Survival and Insulin Secretion. Front Bioeng Biotechnol 2021; 9:662084. [PMID: 34513805 PMCID: PMC8427138 DOI: 10.3389/fbioe.2021.662084] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 07/16/2021] [Indexed: 12/28/2022] Open
Abstract
Islet transplantation provides a promising strategy in treating type 1 diabetes as an autoimmune disease, in which damaged β-cells are replaced with new islets in a minimally invasive procedure. Although islet transplantation avoids the complications associated with whole pancreas transplantations, its clinical applications maintain significant drawbacks, including long-term immunosuppression, a lack of compatible donors, and blood-mediated inflammatory responses. Biomaterial-assisted islet transplantation is an emerging technology that embeds desired cells into biomaterials, which are then directly transplanted into the patient, overcoming the aforementioned challenges. Among various biomaterials, hydrogels are the preferred biomaterial of choice in these transplants due to their ECM-like structure and tunable properties. This review aims to present a comprehensive overview of hydrogel-based biomaterials that are engineered for encapsulation of insulin-secreting cells, focusing on new hydrogel design and modification strategies to improve β-cell viability, decrease inflammatory responses, and enhance insulin secretion. We will discuss the current status of clinical studies using therapeutic bioengineering hydrogels in insulin release and prospective approaches.
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Affiliation(s)
| | | | - Rana Imani
- Department of Biomedical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
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7
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Lee SM, Kim D, Kwak KM, Khin PP, Lim OK, Kim KW, Kim BJ, Jun HS. Comparison of the Effects of Liraglutide on Islet Graft Survival Between Local and Systemic Delivery. Cell Transplant 2021; 29:963689720971245. [PMID: 33172296 PMCID: PMC7784585 DOI: 10.1177/0963689720971245] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Islet transplantation has emerged as a promising treatment for type 1 diabetes mellitus. Liraglutide, a glucagon-like peptide-1 (GLP-1) receptor agonist, protects beta cells after islet transplantation by improving glycemic control through several mechanisms. In this study, we compared the effects of local pretreatment and systemic treatment with liraglutide on islet transplantation in a diabetic mouse model. Streptozotocin (STZ)-induced diabetic C57BL/6 mice were transplanted with syngeneic islets under the kidney capsule. Isolated islets were either locally treated with liraglutide before transplantation or mice were treated systemically by intraperitoneal injection after islet transplantation. Local pretreatment of islets with liraglutide was more effective in increasing body weight, decreasing hemoglobin A1c levels, and lowering blood glucose levels in STZ-diabetic mice transplanted with islets. Local pretreatment was also more effective in increasing insulin secretion and islet survival in STZ-diabetic mice. Histological analysis of the transplantation site revealed fewer apoptotic cells following local pretreatment compared with systemic injection of liraglutide. These findings indicate that liraglutide administered once locally before transplantation might have superior effects on islet preservation than systemic administration.
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Affiliation(s)
- Song Mi Lee
- College of Pharmacy and Gachon Institute Pharmaceutical Science, Gachon University, Yeonsu-gu, Incheon, Korea.,Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Yeonsu-gu, Incheon, Korea.,Both the authors contributed equally to this article
| | - Donghee Kim
- Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Yeonsu-gu, Incheon, Korea.,Both the authors contributed equally to this article
| | - Kyung Min Kwak
- Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Yeonsu-gu, Incheon, Korea
| | - Phyu Phyu Khin
- College of Pharmacy and Gachon Institute Pharmaceutical Science, Gachon University, Yeonsu-gu, Incheon, Korea.,Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Yeonsu-gu, Incheon, Korea
| | - Oh Kyung Lim
- Department of Rehabilitation Medicine, Gachon University Gil Medical Center, Namdong-gu, Incheon, Korea
| | - Kwang-Won Kim
- Department of Internal Medicine, Gachon University Gil Medical Center, Namdong-gu, Incheon, Korea
| | - Byung-Joon Kim
- Department of Internal Medicine, Gachon University Gil Medical Center, Namdong-gu, Incheon, Korea
| | - Hee-Sook Jun
- College of Pharmacy and Gachon Institute Pharmaceutical Science, Gachon University, Yeonsu-gu, Incheon, Korea.,Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Yeonsu-gu, Incheon, Korea.,Gil Medical Research Institute, Gil Hospital, Namdong-gu, Incheon, Korea
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8
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Kupikowska-Stobba B, Lewińska D. Polymer microcapsules and microbeads as cell carriers for in vivo biomedical applications. Biomater Sci 2020; 8:1536-1574. [PMID: 32110789 DOI: 10.1039/c9bm01337g] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Polymer microcarriers are being extensively explored as cell delivery vehicles in cell-based therapies and hybrid tissue and organ engineering. Spherical microcarriers are of particular interest due to easy fabrication and injectability. They include microbeads, composed of a porous matrix, and microcapsules, where matrix core is additionally covered with a semipermeable membrane. Microcarriers provide cell containment at implantation site and protect the cells from host immunoresponse, degradation and shear stress. Immobilized cells may be genetically altered to release a specific therapeutic product directly at the target site, eliminating side effects of systemic therapies. Cell microcarriers need to fulfil a number of extremely high standards regarding their biocompatibility, cytocompatibility, immunoisolating capacity, transport, mechanical and chemical properties. To obtain cell microcarriers of specified parameters, a wide variety of polymers, both natural and synthetic, and immobilization methods can be applied. Yet so far, only a few approaches based on cell-laden microcarriers have reached clinical trials. The main issue that still impedes progress of these systems towards clinical application is limited cell survival in vivo. Herein, we review polymer biomaterials and methods used for fabrication of cell microcarriers for in vivo biomedical applications. We describe their key limitations and modifications aiming at improvement of microcarrier in vivo performance. We also present the main applications of polymer cell microcarriers in regenerative medicine, pancreatic islet and hepatocyte transplantation and in the treatment of cancer. Lastly, we outline the main challenges in cell microimmobilization for biomedical purposes, the strategies to overcome these issues and potential future improvements in this area.
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Affiliation(s)
- Barbara Kupikowska-Stobba
- Laboratory of Electrostatic Methods of Bioencapsulation, Department of Biomaterials and Biotechnological Systems, Nalecz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, Trojdena 4, 02-109 Warsaw, Poland.
| | - Dorota Lewińska
- Laboratory of Electrostatic Methods of Bioencapsulation, Department of Biomaterials and Biotechnological Systems, Nalecz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, Trojdena 4, 02-109 Warsaw, Poland.
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9
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Naguib YW, Givens BE, Ho G, Yu Y, Wei SG, Weiss RM, Felder RB, Salem AK. An injectable microparticle formulation for the sustained release of the specific MEK inhibitor PD98059: in vitro evaluation and pharmacokinetics. Drug Deliv Transl Res 2020; 11:182-191. [PMID: 32378175 DOI: 10.1007/s13346-020-00758-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
PD98059 is a reversible MEK inhibitor that we are investigating as a potential treatment for neurochemical changes in the brain that drive neurohumoral excitation in heart failure. In a rat model that closely resembles human heart failure, we found that central administration of PD98059 inhibits phosphorylation of ERK1/2 in the paraventricular nucleus of the hypothalamus, ultimately reducing sympathetic excitation which is a major contributor to clinical deterioration. Studies revealed that the pharmacokinetics and biodistribution of PD98059 match a two-compartment model, with drug found in brain as well as other body tissues, but with a short elimination half-life in plasma (approximately 73 min) that would severely limit its potential clinical usefulness in heart failure. To increase its availability to tissues, we prepared a sustained release PD98059-loaded PLGA microparticle formulation, using an emulsion solvent evaporation technique. The average particle size, yield percent, and encapsulation percent were found to be 16.73 μm, 76.6%, and 43%, respectively. In vitro drug release occurred over 4 weeks, with no noticeable burst release. Following subcutaneous injection of the microparticles in rats, steady plasma levels of PD98059 were detected by HPLC for up to 2 weeks. Furthermore, plasma and brain levels of PD98059 in rats with heart failure were detectable by LC/MS, despite expected erratic absorption. These findings suggest that PD98059-loaded microparticles hold promise as a novel therapeutic intervention countering sympathetic excitation in heart failure, and perhaps in other disease processes, including cancers, in which activated MAPK signaling is a significant contributing factor. Graphical abstract.
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Affiliation(s)
- Youssef W Naguib
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA, 52242, USA.,Department of Pharmaceutics, Faculty of Pharmacy, Minia University, Minia, 61519, Egypt
| | - Brittany E Givens
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA, 52242, USA.,Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY, 40506, USA
| | - Giang Ho
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA, 52242, USA
| | - Yang Yu
- Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA
| | - Shun-Guang Wei
- Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA.,Iowa Neuroscience Institute, Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA.,Francois M. Abboud Cardiovascular Research Center, Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA
| | - Robert M Weiss
- Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA
| | - Robert B Felder
- Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA.,Veterans Affairs Medical Center, Iowa City, IA, 52242, USA.,Francois M. Abboud Cardiovascular Research Center, Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA
| | - Aliasger K Salem
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA, 52242, USA. .,Holden Comprehensive Cancer Center, University of Iowa, Iowa City, IA, 52242, USA.
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10
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Paving the way for successful islet encapsulation. Drug Discov Today 2019; 24:737-748. [PMID: 30738185 DOI: 10.1016/j.drudis.2019.01.020] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 12/13/2018] [Accepted: 01/29/2019] [Indexed: 01/02/2023]
Abstract
Type 1 diabetes mellitus (T1DM) is a disorder that decimates pancreatic β-cells which produce insulin. Direct pancreatic islet transplantation cannot serve as a widespread therapeutic modality owing to the need for lifelong immunosuppression and donor shortage. Therefore, several encapsulation techniques have been developed to enclose the islets in semipermeable vehicles that will allow oxygen and nutrient input as well as insulin, other metabolites and waste output, while accomplishing immunoisolation. Although encapsulation technology continues to face significant obstacles, recent advances in material science, stem cell biology and immunology potentially serve as pathways to success. This review summarizes the accomplishments of the past 5 years.
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