1
|
Turan A, Zhang L, Tarique M, Ulker V, Arguc FN, Badal D, Yolcu ES, Shirwan H. Engineering pancreatic islets with a novel form of thrombomodulin protein to overcome early graft loss triggered by instant blood-mediated inflammatory reaction. Am J Transplant 2023; 23:619-628. [PMID: 36863480 PMCID: PMC10318623 DOI: 10.1016/j.ajt.2023.02.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 02/23/2023] [Indexed: 03/04/2023]
Abstract
The instant blood-mediated inflammatory reaction (IBMIR) is initiated by innate immune responses that cause substantial islet loss after intraportal transplantation. Thrombomodulin (TM) is a multifaceted innate immune modulator. In this study, we report the generation of a chimeric form of thrombomodulin with streptavidin (SA-TM) for transient display on the surface of islets modified with biotin to mitigate IBMIR. SA-TM protein expressed in insect cells showed the expected structural and functional features. SA-TM converted protein C into activated protein C, blocked phagocytosis of xenogeneic cells by mouse macrophages and inhibited neutrophil activation. SA-TM was effectively displayed on the surface of biotinylated islets without a negative effect on their viability or function. Islets engineered with SA-TM showed improved engraftment and established euglycemia in 83% of diabetic recipients when compared with 29% of recipients transplanted with SA-engineered islets as control in a syngeneic minimal mass intraportal transplantation model. Enhanced engraftment and function of SA-TM-engineered islets were associated with the inhibition of intragraft proinflammatory innate cellular and soluble mediators of IBMIR, such as macrophages, neutrophils, high-mobility group box 1, tissue factor, macrophage chemoattractant protein-1, interleukin-1β, interleukin-6, tumor necrosis factor-α, interferon-γ. Transient display of SA-TM protein on the islet surface to modulate innate immune responses causing islet graft destruction has clinical potential for autologous and allogeneic islet transplantation.
Collapse
Affiliation(s)
- Ali Turan
- Department of Child Health,University of Missouri,Columbia,Missouri,USA; Department of Molecular Microbiology and Immunology,University of Missouri,Columbia,Missouri,USA; NextGen Precision Health,University of Missouri,Columbia,Missouri,USA
| | - Lei Zhang
- Department of Child Health,University of Missouri,Columbia,Missouri,USA; Department of Molecular Microbiology and Immunology,University of Missouri,Columbia,Missouri,USA; NextGen Precision Health,University of Missouri,Columbia,Missouri,USA
| | - Mohammad Tarique
- Department of Child Health,University of Missouri,Columbia,Missouri,USA; Department of Molecular Microbiology and Immunology,University of Missouri,Columbia,Missouri,USA; NextGen Precision Health,University of Missouri,Columbia,Missouri,USA
| | - Vahap Ulker
- Department of Child Health,University of Missouri,Columbia,Missouri,USA; Department of Molecular Microbiology and Immunology,University of Missouri,Columbia,Missouri,USA; NextGen Precision Health,University of Missouri,Columbia,Missouri,USA
| | - Feyza Nur Arguc
- Department of Child Health,University of Missouri,Columbia,Missouri,USA; Department of Molecular Microbiology and Immunology,University of Missouri,Columbia,Missouri,USA; NextGen Precision Health,University of Missouri,Columbia,Missouri,USA
| | - Darshan Badal
- Department of Child Health,University of Missouri,Columbia,Missouri,USA; Department of Molecular Microbiology and Immunology,University of Missouri,Columbia,Missouri,USA; NextGen Precision Health,University of Missouri,Columbia,Missouri,USA
| | - Esma S Yolcu
- Department of Child Health,University of Missouri,Columbia,Missouri,USA; Department of Molecular Microbiology and Immunology,University of Missouri,Columbia,Missouri,USA; NextGen Precision Health,University of Missouri,Columbia,Missouri,USA.
| | - Haval Shirwan
- Department of Child Health,University of Missouri,Columbia,Missouri,USA; Department of Molecular Microbiology and Immunology,University of Missouri,Columbia,Missouri,USA; NextGen Precision Health,University of Missouri,Columbia,Missouri,USA.
| |
Collapse
|
2
|
Tang J, Chen X, Shi H, Zhang M, Zhou Z, Zhang C, Ke T, Kong D, Li C. Prebiotic inulin nanocoating for pancreatic islet surface engineering. Biomater Sci 2023; 11:1470-1485. [PMID: 36602201 DOI: 10.1039/d2bm01009g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Pancreatic islet surface engineering has been proposed as an "easy-to-adopt" approach to enhance post-transplantation islet engraftment for treatment against diabetes. Inulin is an FDA-approved dietary prebiotic with reported anti-diabetic, anti-inflammatory, anti-hypoxic and pro-angiogenic properties. We therefore assessed whether inulin would be a viable option for islet surface engineering. Inulin was oxidized to generate inulin-CHO, which would bind to the cell membrane via covalent bond formation between -CHO and -NH2 across the islet cell membrane. In vitro assessments demonstrated enhanced islet viability and better glucose-induced insulin secretion from inulin-coated (5 mg mL-1) islets, which was accompanied by enhanced revascularization, shown as significantly enhanced tube formation and branching of islet endothelial MS1 cells following co-culture with inulin-coated islets. Reduction of cytokine-induced cell death was also observed from inulin-coated islets following exposure to pro-inflammatory cytokine LPS. LPS-induced ROS production was significantly dampened by 44% in inulin-coated islets when compared to controls. RNA-seq analysis of inulin-coated and control islets identified expression alterations of genes involved in islet function, vascular formation and immune regulation, supporting the positive impact of inulin on islet preservation. In vivo examination using streptozotocin (STZ)-induced hyperglycemic mice further showed moderately better maintained plasma glucose levels in mice received transplantation of inulin-coated islets, attributable to ameliorated CD45+ immune cell infiltration and improved in vivo graft vascularization. We therefore propose islet surface engineering with inulin as safe and beneficial, and further assessment is required to verify its applicability in clinical islet transplantation.
Collapse
Affiliation(s)
- Jianghai Tang
- Tianjin Key Laboratory of Biomedical Materials, Biomedical Barriers Research Center, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, China.
| | - Xuanjin Chen
- Tianjin Key Laboratory of Biomedical Materials, Biomedical Barriers Research Center, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, China.
| | - Hang Shi
- Tianjin Key Laboratory of Biomedical Materials, Biomedical Barriers Research Center, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, China.
| | - Mingming Zhang
- Tianjin Key Laboratory of Biomedical Materials, Biomedical Barriers Research Center, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, China.
| | - Zhimin Zhou
- Tianjin Key Laboratory of Biomedical Materials, Biomedical Barriers Research Center, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, China.
| | - Chuangnian Zhang
- Tianjin Key Laboratory of Biomedical Materials, Biomedical Barriers Research Center, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, China.
| | - Tingyu Ke
- Department of Endocrinology, The Second Affiliated Hospital of Kunming Medical University, Yunnan 650101, China
| | - Deling Kong
- Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, State Key Laboratory of Medicinal Chemical Biology, Collaborative Innovation Centre of Chemical Science and Engineering, and National Institute of Functional Materials, Nankai University, Tianjin 300071, China
| | - Chen Li
- Tianjin Key Laboratory of Biomedical Materials, Biomedical Barriers Research Center, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, China.
| |
Collapse
|
3
|
Navarro Chica CE, Qin T, Pinheiro-Machado E, de Haan BJ, Faas M, Smink AM, Sierra L, López BL, de Vos P. Species-dependent impact of immunosuppressive squalene-gusperimus nanoparticles and adipose-derived stem cells on isolated human and rat pancreatic islets. Islets 2022; 14:164-183. [PMID: 35838041 PMCID: PMC9291694 DOI: 10.1080/19382014.2022.2100191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Transplantation of pancreatic islets is a promising approach to controlling glucose levels in type 1 diabetes mellitus (T1DM), but islet survival is still limited. To overcome this, islet co-culture with mesenchymal stromal cells (MSCs) together with safe immunosuppressive agents like squalene-gusperimus nanoparticles (Sq-GusNPs) may be applied. This could support islet survival and engraftment. Here, we studied how Sq-GusNPs and adipose-derived stem cells (ASCs) influence islets response under pro-inflammatory conditions. Through qRT-PCR, we studied the expression of specific genes at 24 hours in human and rat islets and ASCs in co-culture under indirect contact with or without treatment with Sq-GusNPs. We characterized how the response of islets and ASCs starts at molecular level before impaired viability or function is observed and how this response differs between species. Human islets and ASCs responses showed to be principally influenced by NF-κB activation, whereas rat islet and ASCs responses showed to be principally mediated by nitrosative stress. Rat islets showed tolerance to inflammatory conditions due to IL-1Ra secretion which was also observed in rat ASCs. Human islets induced the expression of cytokines and chemokines with pro-angiogenic, tissue repair, and anti-apoptotic properties in human ASCs under basal conditions. This expression was not inhibited by Sq-GusNPs. Our results showed a clear difference in the response elicited by human and rat islets and ASCs in front of an inflammatory stimulus and Sq-GusNPs. Our data support the use of ASCs and Sq-GusNP to facilitate engraftment of islets for T1DM treatment.
Collapse
Affiliation(s)
- Carlos E. Navarro Chica
- Department of Pathology and Medical Biology, Section of Immunoendocrinology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
- Grupo de Investigación Ciencia de los Materiales, Instituto de Química, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia, Medellín, Colombia
- CONTACT Carlos E. Navarro Chica Pathology and Medical Biology, Section of Immunoendocrinology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, EA11, 9713 GZGroningen, the Netherlands
| | - Tian Qin
- Department of Pathology and Medical Biology, Section of Immunoendocrinology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Erika Pinheiro-Machado
- Department of Pathology and Medical Biology, Section of Immunoendocrinology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Bart J. de Haan
- Department of Pathology and Medical Biology, Section of Immunoendocrinology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - M.M. Faas
- Department of Pathology and Medical Biology, Section of Immunoendocrinology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Alexandra M. Smink
- Department of Pathology and Medical Biology, Section of Immunoendocrinology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Ligia Sierra
- Grupo de Investigación Ciencia de los Materiales, Instituto de Química, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia, Medellín, Colombia
| | - Betty L. López
- Grupo de Investigación Ciencia de los Materiales, Instituto de Química, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia, Medellín, Colombia
| | - Paul de Vos
- Department of Pathology and Medical Biology, Section of Immunoendocrinology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| |
Collapse
|
4
|
Fuchs S, Ernst AU, Wang LH, Shariati K, Wang X, Liu Q, Ma M. Hydrogels in Emerging Technologies for Type 1 Diabetes. Chem Rev 2020; 121:11458-11526. [DOI: 10.1021/acs.chemrev.0c01062] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Stephanie Fuchs
- Biological and Environmental Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Alexander U. Ernst
- Biological and Environmental Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Long-Hai Wang
- Biological and Environmental Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Kaavian Shariati
- Biological and Environmental Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Xi Wang
- Biological and Environmental Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Qingsheng Liu
- Biological and Environmental Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Minglin Ma
- Biological and Environmental Engineering, Cornell University, Ithaca, New York 14853, United States
| |
Collapse
|
5
|
Affiliation(s)
- Christin Bednarek
- Institute of Organic Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, D-76131 Karlsruhe, Germany
| | - Ilona Wehl
- Institute of Organic Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, D-76131 Karlsruhe, Germany
| | - Nicole Jung
- Institute of Organic Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, D-76131 Karlsruhe, Germany
- Institute of Biological and Chemical Systems—Functional Molecular Systems, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
| | - Ute Schepers
- Institute of Organic Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, D-76131 Karlsruhe, Germany
- Institute of Functional Interfaces, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
| | - Stefan Bräse
- Institute of Organic Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, D-76131 Karlsruhe, Germany
- Institute of Biological and Chemical Systems—Functional Molecular Systems, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
| |
Collapse
|
6
|
Wiggins SC, Abuid NJ, Gattás-Asfura KM, Kar S, Stabler CL. Nanotechnology Approaches to Modulate Immune Responses to Cell-based Therapies for Type 1 Diabetes. J Diabetes Sci Technol 2020; 14:212-225. [PMID: 32116026 PMCID: PMC7196865 DOI: 10.1177/1932296819871947] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Islet transplantation is a promising curative treatment option for type 1 diabetes (T1D) as it can provide physiological blood glucose control. The widespread utilization of islet transplantation is limited due to systemic immunosuppression requirements, persisting graft immunodestruction, and poor islet engraftment. Traditional macro- and micropolymeric encapsulation strategies can alleviate the need for antirejection immunosuppression, yet the increased graft volume and diffusional distances imparted by these coatings can be detrimental to graft viability and glucose control. Additionally, systemic administration of pro-engraftment and antirejection therapeutics leaves patients vulnerable to adverse off-target side effects. Nanoscale engineering techniques can be used to immunocamouflage islets, modulate the transplant microenvironment, and provide localized pro-engraftment cues. In this review, we discuss the applications of nanotechnology to advance the clinical potential of islet transplantation, with a focus on cell surface engineering, bioactive functionalization, and use of nanoparticles in T1D cell-based treatments.
Collapse
Affiliation(s)
- Sydney C. Wiggins
- J. Crayton Pruitt Family Department of
Biomedical Engineering, University of Florida, Gainesville, FL, USA
| | - Nicholas J. Abuid
- J. Crayton Pruitt Family Department of
Biomedical Engineering, University of Florida, Gainesville, FL, USA
| | - Kerim M. Gattás-Asfura
- J. Crayton Pruitt Family Department of
Biomedical Engineering, University of Florida, Gainesville, FL, USA
| | - Saumadritaa Kar
- 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
| |
Collapse
|
7
|
Bowers DT, Song W, Wang LH, Ma M. Engineering the vasculature for islet transplantation. Acta Biomater 2019; 95:131-151. [PMID: 31128322 PMCID: PMC6824722 DOI: 10.1016/j.actbio.2019.05.051] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 04/13/2019] [Accepted: 05/20/2019] [Indexed: 12/17/2022]
Abstract
The microvasculature in the pancreatic islet is highly specialized for glucose sensing and insulin secretion. Although pancreatic islet transplantation is a potentially life-changing treatment for patients with insulin-dependent diabetes, a lack of blood perfusion reduces viability and function of newly transplanted tissues. Functional vasculature around an implant is not only necessary for the supply of oxygen and nutrients but also required for rapid insulin release kinetics and removal of metabolic waste. Inadequate vascularization is particularly a challenge in islet encapsulation. Selectively permeable membranes increase the barrier to diffusion and often elicit a foreign body reaction including a fibrotic capsule that is not well vascularized. Therefore, approaches that aid in the rapid formation of a mature and robust vasculature in close proximity to the transplanted cells are crucial for successful islet transplantation or other cellular therapies. In this paper, we review various strategies to engineer vasculature for islet transplantation. We consider properties of materials (both synthetic and naturally derived), prevascularization, local release of proangiogenic factors, and co-transplantation of vascular cells that have all been harnessed to increase vasculature. We then discuss the various other challenges in engineering mature, long-term functional and clinically viable vasculature as well as some emerging technologies developed to address them. The benefits of physiological glucose control for patients and the healthcare system demand vigorous pursuit of solutions to cell transplant challenges. STATEMENT OF SIGNIFICANCE: Insulin-dependent diabetes affects more than 1.25 million people in the United States alone. Pancreatic islets secrete insulin and other endocrine hormones that control glucose to normal levels. During preparation for transplantation, the specialized islet blood vessel supply is lost. Furthermore, in the case of cell encapsulation, cells are protected within a device, further limiting delivery of nutrients and absorption of hormones. To overcome these issues, this review considers methods to rapidly vascularize sites and implants through material properties, pre-vascularization, delivery of growth factors, or co-transplantation of vessel supporting cells. Other challenges and emerging technologies are also discussed. Proper vascular growth is a significant component of successful islet transplantation, a treatment that can provide life-changing benefits to patients.
Collapse
Affiliation(s)
- Daniel T Bowers
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Wei Song
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Long-Hai Wang
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Minglin Ma
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA.
| |
Collapse
|
8
|
Hu S, de Vos P. Polymeric Approaches to Reduce Tissue Responses Against Devices Applied for Islet-Cell Encapsulation. Front Bioeng Biotechnol 2019; 7:134. [PMID: 31214587 PMCID: PMC6558039 DOI: 10.3389/fbioe.2019.00134] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 05/20/2019] [Indexed: 12/15/2022] Open
Abstract
Immunoisolation of pancreatic islets is a technology in which islets are encapsulated in semipermeable but immunoprotective polymeric membranes. The technology allows for successful transplantation of insulin-producing cells in the absence of immunosuppression. Different approaches of immunoisolation are currently under development. These approaches involve intravascular devices that are connected to the bloodstream and extravascular devices that can be distinguished in micro- and macrocapsules and are usually implanted in the peritoneal cavity or under the skin. The technology has been subject of intense fundamental research in the past decade. It has co-evolved with novel replenishable cell sources for cure of diseases such as Type 1 Diabetes Mellitus that need to be protected for the host immune system. Although the devices have shown significant success in animal models and even in human safety studies most technologies still suffer from undesired tissue responses in the host. Here we review the past and current approaches to modulate and reduce tissue responses against extravascular cell-containing micro- and macrocapsules with a focus on rational choices for polymer (combinations). Choices for polymers but also choices for crosslinking agents that induce more stable and biocompatible capsules are discussed. Combining beneficial properties of molecules in diblock polymers or application of these molecules or other anti-biofouling molecules have been reviewed. Emerging are also the principles of polymer brushes that prevent protein and cell-adhesion. Recently also immunomodulating biomaterials that bind to specific immune receptors have entered the field. Several natural and synthetic polymers and even combinations of these polymers have demonstrated significant improvement in outcomes of encapsulated grafts. Adequate polymeric surface properties have been shown to be essential but how the surface should be composed to avoid host responses remains to be identified. Current insight is that optimal biocompatible devices can be created which raises optimism that immunoisolating devices can be created that allows for long term survival of encapsulated replenishable insulin-producing cell sources for treatment of Type 1 Diabetes Mellitus.
Collapse
Affiliation(s)
- Shuixan Hu
- Division of Medical Biology, Department of Pathology and Medical Biology, Immunoendocrinology, University of Groningen and University Medical Center Groningen, Groningen, Netherlands
| | | |
Collapse
|
9
|
Cell membrane engineering with synthetic materials: Applications in cell spheroids, cellular glues and microtissue formation. Acta Biomater 2019; 90:21-36. [PMID: 30986529 DOI: 10.1016/j.actbio.2019.04.013] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 03/26/2019] [Accepted: 04/03/2019] [Indexed: 12/16/2022]
Abstract
Biologically inspired materials with tunable bio- and physicochemical properties provide an essential framework to actively control and support cellular behavior. Cell membrane remodeling approaches benefit from the advances in polymer science and bioconjugation methods, which allow for the installation of un-/natural molecules and particles on the cells' surface. Synthetically remodeled cells have superior properties and are under intense investigation in various therapeutic scenarios as cell delivery systems, bio-sensing platforms, injectable biomaterials and bioinks for 3D bioprinting applications. In this review article, recent advances in the field of cell surface remodeling via bio-chemical means and the potential biomedical applications of these emerging cell hybrids are discussed. STATEMENT OF SIGNIFICANCE: Recent advances in bioconjugation methods, controlled/living polymerizations, microfabrication techniques and 3D printing technologies have enabled researchers to probe specific cellular functions and cues for therapeutic and research purposes through the formation of cell spheroids and polymer-cell chimeras. This review article highlights recent non-genetic cell membrane engineering strategies towards the fabrication of cellular ensembles and microtissues with interest in 3D in vitro modeling, cell therapeutics and tissue engineering. From a wider perspective, these approaches may provide a roadmap for future advances in cell therapies which will expedite the clinical use of cells, thereby improving the quality and accessibility of disease treatments.
Collapse
|
10
|
Ernst AU, Bowers DT, Wang LH, Shariati K, Plesser MD, Brown NK, Mehrabyan T, Ma M. Nanotechnology in cell replacement therapies for type 1 diabetes. Adv Drug Deliv Rev 2019; 139:116-138. [PMID: 30716349 PMCID: PMC6677642 DOI: 10.1016/j.addr.2019.01.013] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 01/17/2019] [Accepted: 01/28/2019] [Indexed: 12/12/2022]
Abstract
Islet transplantation is a promising long-term, compliance-free, complication-preventing treatment for type 1 diabetes. However, islet transplantation is currently limited to a narrow set of patients due to the shortage of donor islets and side effects from immunosuppression. Encapsulating cells in an immunoisolating membrane can allow for their transplantation without the need for immunosuppression. Alternatively, "open" systems may improve islet health and function by allowing vascular ingrowth at clinically attractive sites. Many processes that enable graft success in both approaches occur at the nanoscale level-in this review we thus consider nanotechnology in cell replacement therapies for type 1 diabetes. A variety of biomaterial-based strategies at the nanometer range have emerged to promote immune-isolation or modulation, proangiogenic, or insulinotropic effects. Additionally, coating islets with nano-thin polymer films has burgeoned as an islet protection modality. Materials approaches that utilize nanoscale features manipulate biology at the molecular scale, offering unique solutions to the enduring challenges of islet transplantation.
Collapse
Affiliation(s)
- Alexander U Ernst
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Daniel T Bowers
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Long-Hai Wang
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Kaavian Shariati
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Mitchell D Plesser
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Natalie K Brown
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Tigran Mehrabyan
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Minglin Ma
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA.
| |
Collapse
|
11
|
Song G, Hu Y, Liu Y, Jiang R. Layer-by-Layer Heparinization of the Cell Surface by Using Heparin-Binding Peptide Functionalized Human Serum Albumin. MATERIALS 2018; 11:ma11050849. [PMID: 29783776 PMCID: PMC5978226 DOI: 10.3390/ma11050849] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 05/17/2018] [Accepted: 05/18/2018] [Indexed: 02/07/2023]
Abstract
Layer-by-layer heparinization of therapeutic cells prior to transplantation is an effective way to inhibit the instant blood-mediated inflammatory reactions (IBMIRs), which are the major cause of early cell graft loss during post-transplantation. Here, a conjugate of heparin-binding peptide (HBP) and human serum albumin (HSA), HBP-HSA, was synthesized by using heterobifunctional crosslinker. After the first heparin layer was coated on human umbilical vein endothelial cells (HUVECs) by means of the HBP-polyethylene glycol-phospholipid conjugate, HBP-HSA and heparin were then applied to the cell surface sequentially to form multiple layers. The immobilization and retention of heparin were analyzed by confocal microscopy and flow cytometry, respectively, and the cytotoxity of HBP-HSA was further evaluated by cell viability assay. Results indicated that heparin was successfully introduced to the cell surface in a layer-by-layer way and retained for at least 24 h, while the cytotoxity of HBP-HSA was negligible at the working concentration. Accordingly, this conjugate provides a promising method for co-immobilization of heparin and HSA to the cell surface under physiological conditions with improved biocompatibility.
Collapse
Affiliation(s)
- Guowei Song
- College of Life and Health Sciences, Northeastern University, Shenyang, 110169, China.
| | - Yaning Hu
- College of Life and Health Sciences, Northeastern University, Shenyang, 110169, China.
| | - Yusheng Liu
- College of Life and Health Sciences, Northeastern University, Shenyang, 110169, China.
| | - Rui Jiang
- College of Life and Health Sciences, Northeastern University, Shenyang, 110169, China.
| |
Collapse
|
12
|
Lei J, Murphy WL, Temenoff JS. Combination of Heparin Binding Peptide and Heparin Cell Surface Coatings for Mesenchymal Stem Cell Spheroid Assembly. Bioconjug Chem 2018; 29:878-884. [PMID: 29341600 DOI: 10.1021/acs.bioconjchem.7b00757] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Microtissues containing multiple cell types have been used in both in vitro models and in vivo tissue repair applications. However, to improve throughput, there is a need to develop a platform that supports self-assembly of a large number of 3D microtissues containing multiple cell types in a dynamic suspension system. Thus, the objective of this study was to exploit the binding interaction between the negatively charged glycosaminoglycan, heparin, and a known heparin binding peptide to establish a method that promotes assembly of mesenchymal stem cell (MSC) spheroids into larger aggregates. We characterized heparin binding peptide (HEPpep) and heparin coatings on cell surfaces and determined the specificity of these coatings in promoting assembly of MSC spheroids in dynamic culture. Overall, combining spheroids with both coatings promoted up to 70 ± 11% of spheroids to assemble into multiaggregate structures, as compared to only 10 ± 4% assembly when cells having the heparin coating were cultured with cells coated with a scrambled peptide. These results suggest that this self-assembly method represents an exciting approach that may be applicable for a wide range of applications in which cell aggregation is desired.
Collapse
Affiliation(s)
| | - William L Murphy
- Department of Biomedical Engineering , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States.,Department of Orthopedics and Rehabilitation , University of Wisconsin-Madison , Madison , Wisconsin 53705 , United States
| | - Johnna S Temenoff
- Coulter Department of Biomedical Engineering , Georgia Tech/Emory University , Atlanta , Georgia 30332 , United States
| |
Collapse
|
13
|
Ayenehdeh JM, Niknam B, Hashemi SM, Rahavi H, Rezaei N, Soleimani M, Tajik N. Introducing a New Experimental Islet Transplantation Model using Biomimetic Hydrogel and a Simple High Yield Islet Isolation Technique. IRANIAN BIOMEDICAL JOURNAL 2017; 21:218-27. [PMID: 27752182 PMCID: PMC5459937 DOI: 10.18869/acadpub.ibj.21.4.218] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Revised: 02/15/2016] [Accepted: 02/20/2016] [Indexed: 01/26/2023]
Abstract
BACKGROUND Islet transplantation could be an ideal alternative treatment to insulin therapy for type 1 diabetes Mellitus (T1DM). This clinical and experimental field requires a model that covers problems such as requiring a large number of functional and viable islets, the optimal transplantation site, and the prevention of islet dispersion. Hence, the methods of choice for isolation of functional islets and transplantation are crucial. METHODS The present study has introduced an experimental model that overcomes some critical issues in islet transplantation, including in situ pancreas perfusion by digestive enzymes through common bile duct. In comparison with conventional methods, we inflated the pancreas in Petri dishes with only 1 ml collagenase type XI solution, which was followed by hand-picking isolation or Ficoll gradient separation to purify the islets. Then we used a hydrogel composite in which the islets were embedded and transplanted into the peritoneal cavity of the streptozotocin-induced diabetic C57BL/6 mice. RESULTS As compared to the yield of the classical methods, in our modified technique, the mean yield of isolation was about 130-200 viable islets/mouse pancreas. In vitro glucose-mediated insulin secretion assay indicated an appropriate response in isolated islets. In addition, data from in vivo experiments revealed that the allograft remarkably maintained blood glucose levels under 400 mg/dl and hydrogel composite prevents the passage of immune cells. CONCLUSION In the model presented here, the rapid islet isolation technique and the application of biomimetic hydrogel wrapping of islets could facilitate islet transplantation procedures.
Collapse
Affiliation(s)
- Jamal Mohammadi Ayenehdeh
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
- Immunology Research Center (IRC), Iran University of Medical Sciences, Tehran, Iran
| | - Bahareh Niknam
- Immunology Research Center (IRC), Iran University of Medical Sciences, Tehran, Iran
- Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Seyed Mahmoud Hashemi
- Department of Immunology, School of Medicine, Tehran, Shahid Beheshti University of Medical Sciences, Iran
| | - Hossein Rahavi
- Immunology Research Center (IRC), Iran University of Medical Sciences, Tehran, Iran
| | - Nima Rezaei
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
- Research Center for Immunodeficiencies, Tehran University of Medical Sciences, Children’s Medical Center, Tehran, Iran
- Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Masoud Soleimani
- Department of Stem Cell Biology, Stem Cell Technology Research Center, Tehran, Iran
| | - Nader Tajik
- Immunology Research Center (IRC), Iran University of Medical Sciences, Tehran, Iran
| |
Collapse
|
14
|
Cell based therapeutics in type 1 diabetes mellitus. Int J Pharm 2017; 521:346-356. [DOI: 10.1016/j.ijpharm.2017.02.063] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 02/21/2017] [Accepted: 02/22/2017] [Indexed: 12/21/2022]
|
15
|
Woodward KB, Wang F, Zhao H, Yolcu ES, Shirwan H. Novel technologies to engineer graft for tolerance induction. Curr Opin Organ Transplant 2016; 21:74-80. [PMID: 26626421 DOI: 10.1097/mot.0000000000000270] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
PURPOSE OF REVIEW Conquering allograft rejection remains an elusive goal in spite of recent breakthroughs in the field of immunosuppression. Much of the problem lies in the toxicity and side-effects of long-term use of systemic immunosuppressant drugs, which are sometimes ineffective in controlling rejection, but also hinder establishment of transplant tolerance. In this review, we discuss novel technologies that use grafts engineered with immunomodulatory molecules as a means of inducing tolerance. RECENT FINDINGS Several recent studies have demonstrated the feasibility of engineering cells, tissues, or solid organ grafts with immunoregulatory biologics to achieve long termgraft survival without the use of chronic immunosuppression. This approach was shown to primarily change the ratio of T effector versus CD4+CD25+FoxP3+ T regulatory cells within the graft microenvironment in favor of attaining localized tolerance induction and maintenance. SUMMARY Localized immunomodulation using biologic-engineered allografts represent a new paradigm for achieving long-term graft survival in the absence of chronic use of immunosuppression. The manipulation of the graft, rather than the recipient, not only ensures short- and long-term safety by minimizing the adverse effects of immunosuppression, but also allows retention of immune competency critical for the ability of the recipient to fight infections and cancer.
Collapse
Affiliation(s)
- Kyle B Woodward
- aDepartment of Microbiology and Immunology, Institute for Cellular Therapeutics, University of Louisville, Louisville, Kentucky, USA bOrgan Transplant Center, The First Affiliated Hospital of Sun Yat-sen University, Zhongshan, Guangzhou, China *Kyle B. Woodward and Feng Wang equally contributed to the writing of this article
| | | | | | | | | |
Collapse
|
16
|
Oliveira MB, Hatami J, Mano JF. Coating Strategies Using Layer-by-layer Deposition for Cell Encapsulation. Chem Asian J 2016; 11:1753-64. [PMID: 27213990 DOI: 10.1002/asia.201600145] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Indexed: 12/19/2022]
Abstract
The layer-by-layer (LbL) deposition technique is widely used to develop multilayered films based on the directed assembly of complementary materials. In the last decade, thin multilayers prepared by LbL deposition have been applied in biological fields, namely, for cellular encapsulation, due to their versatile processing and tunable properties. Their use was suggested as an alternative approach to overcome the drawbacks of bulk hydrogels, for endocrine cells transplantation or tissue engineering approaches, as effective cytoprotective agents, or as a way to control cell division. Nanostructured multilayered materials are currently used in the nanomodification of the surfaces of single cells and cell aggregates, and are also suitable as coatings for cell-laden hydrogels or other biomaterials, which may later be transformed to highly permeable hollow capsules. In this Focus Review, we discuss the applications of LbL cell encapsulation in distinct fields, including cell therapy, regenerative medicine, and biotechnological applications. Insights regarding practical aspects required to employ LbL for cell encapsulation are also provided.
Collapse
Affiliation(s)
- Mariana B Oliveira
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Javad Hatami
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193, Aveiro, Portugal
| | - João F Mano
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193, Aveiro, Portugal.
| |
Collapse
|
17
|
In situ regeneration of bioactive coatings enabled by an evolved Staphylococcus aureus sortase A. Nat Commun 2016; 7:11140. [PMID: 27073027 PMCID: PMC4833859 DOI: 10.1038/ncomms11140] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2015] [Accepted: 02/24/2016] [Indexed: 11/08/2022] Open
Abstract
Surface immobilization of bioactive molecules is a central paradigm in the design of implantable devices and biosensors with improved clinical performance capabilities. However, in vivo degradation or denaturation of surface constituents often limits the long-term performance of bioactive films. Here we demonstrate the capacity to repeatedly regenerate a covalently immobilized monomolecular thin film of bioactive molecules through a two-step stripping and recharging cycle. Reversible transpeptidation by a laboratory evolved Staphylococcus aureus sortase A (eSrtA) enabled the rapid immobilization of an anti-thrombogenic film in the presence of whole blood and permitted multiple cycles of film regeneration in vitro that preserved its biological activity. Moreover, eSrtA transpeptidation facilitated surface re-engineering of medical devices in situ after in vivo implantation through removal and restoration film constituents. These studies establish a rapid, orthogonal and reversible biochemical scheme to regenerate selective molecular constituents with the potential to extend the lifetime of bioactive films. Bioactive coatings offer a strategy to modulate host response to implants, but their translation to the clinic is hampered by their fast in vivo degradation. Here, the authors use an engineered bacterial protein to regenerate an anti-thrombogenic film in vitro and in situ after device implantation.
Collapse
|
18
|
Wang L, Jiang R, Wang L, Liu Y, Sun XL. Preparation of chain-end clickable recombinant protein and its bio-orthogonal modification. Bioorg Chem 2016; 65:159-66. [PMID: 26953841 DOI: 10.1016/j.bioorg.2016.02.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 02/18/2016] [Accepted: 02/27/2016] [Indexed: 01/21/2023]
Abstract
Introducing unique functional group into protein is an attractive approach for site-selective protein modification applications. In this report, we systemically investigated four site-selective strategies to introduce azide functionality into recombinant thrombomodulin (TM456), via direct recombinant expression with unnatural amino acid, chemical, and enzymatic modification for its bio-orthogonal modification application. First, a straightforward recombinant method to express TM456 with azide functionality near C-terminus by replacing methionine with azidohomoanlanine from methionine auxotroph Escherichia coli cell was investigated. Next, a sortase-mediated ligation (SML) method to incorporate azide functionality into the C-terminus of recombinant TM456 was demonstrated. The third is to add azide functionality to the N-terminal amine of recombinant TM456via amidation chemistry, and the fourth is tyrosine selective three-component Mannich reaction to introduce azide functionality to recombinant TM456. Overall, SML of recombinant protein affords the highest overall yield for incorporating azide functionality into the C-terminus recombinant TM456 since the key protein expression step uses natural amino acids. Also, single site modification facilitates the highest TM456 activity.
Collapse
Affiliation(s)
- Lin Wang
- Department of Chemistry, Chemical and Biomedical Engineering and Center for Gene Regulation in Health and Disease (GRHD), Cleveland State University, Cleveland, OH, USA
| | - Rui Jiang
- Department of Chemistry, Chemical and Biomedical Engineering and Center for Gene Regulation in Health and Disease (GRHD), Cleveland State University, Cleveland, OH, USA; College of Life and Health Sciences, Northeastern University, Shenyang 110004, PR China
| | - Lin Wang
- Department of Chemistry, Chemical and Biomedical Engineering and Center for Gene Regulation in Health and Disease (GRHD), Cleveland State University, Cleveland, OH, USA; Department of Medicinal Chemistry, China Medical University, Shenyang, PR China
| | - Yang Liu
- Department of Chemistry, Chemical and Biomedical Engineering and Center for Gene Regulation in Health and Disease (GRHD), Cleveland State University, Cleveland, OH, USA; Key Laboratory of Structure-Based Drugs Design & Discovery of Ministry of Education, School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang, PR China
| | - Xue-Long Sun
- Department of Chemistry, Chemical and Biomedical Engineering and Center for Gene Regulation in Health and Disease (GRHD), Cleveland State University, Cleveland, OH, USA.
| |
Collapse
|
19
|
Song S, Roy S. Progress and challenges in macroencapsulation approaches for type 1 diabetes (T1D) treatment: Cells, biomaterials, and devices. Biotechnol Bioeng 2016; 113:1381-402. [PMID: 26615050 DOI: 10.1002/bit.25895] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Revised: 10/30/2015] [Accepted: 11/24/2015] [Indexed: 12/15/2022]
Abstract
Macroencapsulation technology has been an attractive topic in the field of treatment for Type 1 diabetes due to mechanical stability, versatility, and retrievability of the macro-capsule design. Macro-capsules can be categorized into extravascular and intravascular devices, in which solute transport relies either on diffusion or convection, respectively. Failure of macroencapsulation strategies can be due to limited regenerative capacity of the encased insulin-producing cells, sub-optimal performance of encapsulation biomaterials, insufficient immunoisolation, excessive blood thrombosis for vascular perfusion devices, and inadequate modes of mass transfer to support cell viability and function. However, significant technical advancements have been achieved in macroencapsulation technology, namely reducing diffusion distance for oxygen and nutrients, using pro-angiogenic factors to increase vascularization for islet engraftment, and optimizing membrane permeability and selectivity to prevent immune attacks from host's body. This review presents an overview of existing macroencapsulation devices and discusses the advances based on tissue-engineering approaches that will stimulate future research and development of macroencapsulation technology. Biotechnol. Bioeng. 2016;113: 1381-1402. © 2015 Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- Shang Song
- Department of Bioengineering and Therapeutic Sciences, University of California-San Francisco, San Francisco, California 94158
| | - Shuvo Roy
- Department of Bioengineering and Therapeutic Sciences, University of California-San Francisco, San Francisco, California 94158.
| |
Collapse
|
20
|
Bowers DT, Botchwey EA, Brayman KL. Advances in Local Drug Release and Scaffolding Design to Enhance Cell Therapy for Diabetes. TISSUE ENGINEERING. PART B, REVIEWS 2015; 21:491-503. [PMID: 26192271 DOI: 10.1089/ten.teb.2015.0275] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Islet transplant is a curative treatment for insulin-dependent diabetes. However, challenges, including poor tissue survival and a lack of efficient engraftment, must be overcome. An encapsulating or scaffolding material can act as a vehicle for agents carefully chosen for the islet transplant application. From open porous scaffolds to spherical capsules and conformal coatings, greater immune protection is often accompanied by greater distances to microvasculature. Generating a local oxygen supply from the implant material or encouraging vessel growth through the release of local factors can create an oxygenated engraftment site. Intricately related to the vascularization response, inflammatory interaction with the cell supporting implant is a long-standing hurdle to material-based islet transplant. Modulation of the immune responses to the islets as well as the material itself must be considered. To match the post-transplant complexity, the release rate can be tuned to orchestrate temporal responses. Material degradation properties can be utilized in passive approaches or external stimuli and biological cues in active approaches. A combination of multiple carefully chosen factors delivered in an agent-specialized manner is considered by this review to improve the long-term function of islets transplanted in scaffolding and encapsulating materials.
Collapse
Affiliation(s)
- Daniel T Bowers
- 1 Department of Biomedical Engineering, University of Virginia , Charlottesville, Virginia
- 2 Department of Surgery, University of Virginia , Charlottesville, Virginia
| | - Edward A Botchwey
- 3 Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University , Atlanta, Georgia
| | - Kenneth L Brayman
- 1 Department of Biomedical Engineering, University of Virginia , Charlottesville, Virginia
- 2 Department of Surgery, University of Virginia , Charlottesville, Virginia
| |
Collapse
|
21
|
Khosravi-Maharlooei M, Hajizadeh-Saffar E, Tahamtani Y, Basiri M, Montazeri L, Khalooghi K, Kazemi Ashtiani M, Farrokhi A, Aghdami N, Sadr Hashemi Nejad A, Larijani MB, De Leu N, Heimberg H, Luo X, Baharvand H. THERAPY OF ENDOCRINE DISEASE: Islet transplantation for type 1 diabetes: so close and yet so far away. Eur J Endocrinol 2015; 173:R165-83. [PMID: 26036437 DOI: 10.1530/eje-15-0094] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2015] [Accepted: 06/02/2015] [Indexed: 12/12/2022]
Abstract
Over the past decades, tremendous efforts have been made to establish pancreatic islet transplantation as a standard therapy for type 1 diabetes. Recent advances in islet transplantation have resulted in steady improvements in the 5-year insulin independence rates for diabetic patients. Here we review the key challenges encountered in the islet transplantation field which include islet source limitation, sub-optimal engraftment of islets, lack of oxygen and blood supply for transplanted islets, and immune rejection of islets. Additionally, we discuss possible solutions for these challenges.
Collapse
Affiliation(s)
- Mohsen Khosravi-Maharlooei
- Department of Stem Cells and Developmental Biology at Cell Science Research CenterDepartment of Regenerative Medicine at Cell Science Research CenterRoyan Institute for Stem Cell Biology and Technology, ACECR, Tehran, IranEndocrinology and Metabolism Research InstituteTehran University of Medical Sciences, Tehran, IranDiabetes Research CenterVrije Universiteit Brussel, Laarbeeklaan 103, Brussels, BelgiumDivision of Nephrology and HypertensionDepartment of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USADepartment of Developmental BiologyUniversity of Science and Culture, ACECR, Tehran 148-16635, Iran
| | - Ensiyeh Hajizadeh-Saffar
- Department of Stem Cells and Developmental Biology at Cell Science Research CenterDepartment of Regenerative Medicine at Cell Science Research CenterRoyan Institute for Stem Cell Biology and Technology, ACECR, Tehran, IranEndocrinology and Metabolism Research InstituteTehran University of Medical Sciences, Tehran, IranDiabetes Research CenterVrije Universiteit Brussel, Laarbeeklaan 103, Brussels, BelgiumDivision of Nephrology and HypertensionDepartment of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USADepartment of Developmental BiologyUniversity of Science and Culture, ACECR, Tehran 148-16635, Iran
| | - Yaser Tahamtani
- Department of Stem Cells and Developmental Biology at Cell Science Research CenterDepartment of Regenerative Medicine at Cell Science Research CenterRoyan Institute for Stem Cell Biology and Technology, ACECR, Tehran, IranEndocrinology and Metabolism Research InstituteTehran University of Medical Sciences, Tehran, IranDiabetes Research CenterVrije Universiteit Brussel, Laarbeeklaan 103, Brussels, BelgiumDivision of Nephrology and HypertensionDepartment of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USADepartment of Developmental BiologyUniversity of Science and Culture, ACECR, Tehran 148-16635, Iran
| | - Mohsen Basiri
- Department of Stem Cells and Developmental Biology at Cell Science Research CenterDepartment of Regenerative Medicine at Cell Science Research CenterRoyan Institute for Stem Cell Biology and Technology, ACECR, Tehran, IranEndocrinology and Metabolism Research InstituteTehran University of Medical Sciences, Tehran, IranDiabetes Research CenterVrije Universiteit Brussel, Laarbeeklaan 103, Brussels, BelgiumDivision of Nephrology and HypertensionDepartment of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USADepartment of Developmental BiologyUniversity of Science and Culture, ACECR, Tehran 148-16635, Iran
| | - Leila Montazeri
- Department of Stem Cells and Developmental Biology at Cell Science Research CenterDepartment of Regenerative Medicine at Cell Science Research CenterRoyan Institute for Stem Cell Biology and Technology, ACECR, Tehran, IranEndocrinology and Metabolism Research InstituteTehran University of Medical Sciences, Tehran, IranDiabetes Research CenterVrije Universiteit Brussel, Laarbeeklaan 103, Brussels, BelgiumDivision of Nephrology and HypertensionDepartment of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USADepartment of Developmental BiologyUniversity of Science and Culture, ACECR, Tehran 148-16635, Iran
| | - Keynoosh Khalooghi
- Department of Stem Cells and Developmental Biology at Cell Science Research CenterDepartment of Regenerative Medicine at Cell Science Research CenterRoyan Institute for Stem Cell Biology and Technology, ACECR, Tehran, IranEndocrinology and Metabolism Research InstituteTehran University of Medical Sciences, Tehran, IranDiabetes Research CenterVrije Universiteit Brussel, Laarbeeklaan 103, Brussels, BelgiumDivision of Nephrology and HypertensionDepartment of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USADepartment of Developmental BiologyUniversity of Science and Culture, ACECR, Tehran 148-16635, Iran
| | - Mohammad Kazemi Ashtiani
- Department of Stem Cells and Developmental Biology at Cell Science Research CenterDepartment of Regenerative Medicine at Cell Science Research CenterRoyan Institute for Stem Cell Biology and Technology, ACECR, Tehran, IranEndocrinology and Metabolism Research InstituteTehran University of Medical Sciences, Tehran, IranDiabetes Research CenterVrije Universiteit Brussel, Laarbeeklaan 103, Brussels, BelgiumDivision of Nephrology and HypertensionDepartment of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USADepartment of Developmental BiologyUniversity of Science and Culture, ACECR, Tehran 148-16635, Iran
| | - Ali Farrokhi
- Department of Stem Cells and Developmental Biology at Cell Science Research CenterDepartment of Regenerative Medicine at Cell Science Research CenterRoyan Institute for Stem Cell Biology and Technology, ACECR, Tehran, IranEndocrinology and Metabolism Research InstituteTehran University of Medical Sciences, Tehran, IranDiabetes Research CenterVrije Universiteit Brussel, Laarbeeklaan 103, Brussels, BelgiumDivision of Nephrology and HypertensionDepartment of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USADepartment of Developmental BiologyUniversity of Science and Culture, ACECR, Tehran 148-16635, Iran
| | - Nasser Aghdami
- Department of Stem Cells and Developmental Biology at Cell Science Research CenterDepartment of Regenerative Medicine at Cell Science Research CenterRoyan Institute for Stem Cell Biology and Technology, ACECR, Tehran, IranEndocrinology and Metabolism Research InstituteTehran University of Medical Sciences, Tehran, IranDiabetes Research CenterVrije Universiteit Brussel, Laarbeeklaan 103, Brussels, BelgiumDivision of Nephrology and HypertensionDepartment of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USADepartment of Developmental BiologyUniversity of Science and Culture, ACECR, Tehran 148-16635, Iran
| | - Anavasadat Sadr Hashemi Nejad
- Department of Stem Cells and Developmental Biology at Cell Science Research CenterDepartment of Regenerative Medicine at Cell Science Research CenterRoyan Institute for Stem Cell Biology and Technology, ACECR, Tehran, IranEndocrinology and Metabolism Research InstituteTehran University of Medical Sciences, Tehran, IranDiabetes Research CenterVrije Universiteit Brussel, Laarbeeklaan 103, Brussels, BelgiumDivision of Nephrology and HypertensionDepartment of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USADepartment of Developmental BiologyUniversity of Science and Culture, ACECR, Tehran 148-16635, Iran
| | - Mohammad-Bagher Larijani
- Department of Stem Cells and Developmental Biology at Cell Science Research CenterDepartment of Regenerative Medicine at Cell Science Research CenterRoyan Institute for Stem Cell Biology and Technology, ACECR, Tehran, IranEndocrinology and Metabolism Research InstituteTehran University of Medical Sciences, Tehran, IranDiabetes Research CenterVrije Universiteit Brussel, Laarbeeklaan 103, Brussels, BelgiumDivision of Nephrology and HypertensionDepartment of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USADepartment of Developmental BiologyUniversity of Science and Culture, ACECR, Tehran 148-16635, Iran
| | - Nico De Leu
- Department of Stem Cells and Developmental Biology at Cell Science Research CenterDepartment of Regenerative Medicine at Cell Science Research CenterRoyan Institute for Stem Cell Biology and Technology, ACECR, Tehran, IranEndocrinology and Metabolism Research InstituteTehran University of Medical Sciences, Tehran, IranDiabetes Research CenterVrije Universiteit Brussel, Laarbeeklaan 103, Brussels, BelgiumDivision of Nephrology and HypertensionDepartment of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USADepartment of Developmental BiologyUniversity of Science and Culture, ACECR, Tehran 148-16635, Iran
| | - Harry Heimberg
- Department of Stem Cells and Developmental Biology at Cell Science Research CenterDepartment of Regenerative Medicine at Cell Science Research CenterRoyan Institute for Stem Cell Biology and Technology, ACECR, Tehran, IranEndocrinology and Metabolism Research InstituteTehran University of Medical Sciences, Tehran, IranDiabetes Research CenterVrije Universiteit Brussel, Laarbeeklaan 103, Brussels, BelgiumDivision of Nephrology and HypertensionDepartment of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USADepartment of Developmental BiologyUniversity of Science and Culture, ACECR, Tehran 148-16635, Iran
| | - Xunrong Luo
- Department of Stem Cells and Developmental Biology at Cell Science Research CenterDepartment of Regenerative Medicine at Cell Science Research CenterRoyan Institute for Stem Cell Biology and Technology, ACECR, Tehran, IranEndocrinology and Metabolism Research InstituteTehran University of Medical Sciences, Tehran, IranDiabetes Research CenterVrije Universiteit Brussel, Laarbeeklaan 103, Brussels, BelgiumDivision of Nephrology and HypertensionDepartment of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USADepartment of Developmental BiologyUniversity of Science and Culture, ACECR, Tehran 148-16635, Iran
| | - Hossein Baharvand
- Department of Stem Cells and Developmental Biology at Cell Science Research CenterDepartment of Regenerative Medicine at Cell Science Research CenterRoyan Institute for Stem Cell Biology and Technology, ACECR, Tehran, IranEndocrinology and Metabolism Research InstituteTehran University of Medical Sciences, Tehran, IranDiabetes Research CenterVrije Universiteit Brussel, Laarbeeklaan 103, Brussels, BelgiumDivision of Nephrology and HypertensionDepartment of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USADepartment of Developmental BiologyUniversity of Science and Culture, ACECR, Tehran 148-16635, Iran Department of Stem Cells and Developmental Biology at Cell Science Research CenterDepartment of Regenerative Medicine at Cell Science Research CenterRoyan Institute for Stem Cell Biology and Technology, ACECR, Tehran, IranEndocrinology and Metabolism Research InstituteTehran University of Medical Sciences, Tehran, IranDiabetes Research CenterVrije Universiteit Brussel, Laarbeeklaan 103, Brussels, BelgiumDivision of Nephrology and HypertensionDepartment of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USADepartment of Developmental BiologyUniversity of Science and Culture, ACECR, Tehran 148-16635, Iran
| |
Collapse
|
22
|
Yang EY, Kronenfeld JP, Stabler CL. Engineering biomimetic materials for islet transplantation. Curr Diabetes Rev 2015; 11:163-9. [PMID: 25776871 PMCID: PMC4447569 DOI: 10.2174/1573399811666150317130440] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Revised: 02/23/2015] [Accepted: 02/24/2015] [Indexed: 12/30/2022]
Abstract
A closed-loop system that provides both the sensing of glucose and the appropriate dosage of insulin could dramatically improve treatment options for insulin-dependent diabetics. The intrahepatic implantation of allogeneic islets has the potential to provide this intimate control, by transplanting the very cells that have this inherent sensing and secretion capacity. Limiting islet transplantation, however, is the significant loss and dysfunction of islets following implantation, due to the poor engraftment environment and significant immunological attack. In this review, we outline approaches that seek to address these challenges via engineering biomimetic materials. These materials can serve to mimic natural processes that work toward improving engraftment, minimizing inflammation, and directing immunological responses. Biomimetic materials can serve to house cells, recapitulate native microenvironments, release therapeutic agents in a physiological manner, and/or present agents to direct cells towards desired responses. By integrating these approaches, superior platforms capable of improving long-term engraftment and acceptance of transplanted islets are on the horizon.
Collapse
Affiliation(s)
| | | | - Cherie L Stabler
- Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA.
| |
Collapse
|
23
|
SoRelle JA, Kanak MA, Itoh T, Horton JM, Naziruddin B, Kane RR. Comparison of surface modification chemistries in mouse, porcine, and human islets. J Biomed Mater Res A 2014; 103:869-77. [DOI: 10.1002/jbm.a.35229] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Revised: 05/01/2014] [Accepted: 05/13/2014] [Indexed: 12/21/2022]
Affiliation(s)
- Jeffrey A. SoRelle
- Institute of Biomedical Studies; Baylor University; Waco Texas 76798-7224
| | - Mazhar A. Kanak
- Institute of Biomedical Studies; Baylor University; Waco Texas 76798-7224
| | - Takeshi Itoh
- Baylor Research Institute; Baylor University Medical Center; Dallas Texas 75204
| | - Joshua M. Horton
- Institute of Biomedical Studies; Baylor University; Waco Texas 76798-7224
| | - Bashoo Naziruddin
- Institute of Biomedical Studies; Baylor University; Waco Texas 76798-7224
- Annette C. and Harold C. Simmons Transplant Institute; Baylor University Medical Center; Dallas Texas 75246
| | - Robert R. Kane
- Institute of Biomedical Studies; Baylor University; Waco Texas 76798-7224
- Department of Chemistry and Biochemistry; Baylor University; Waco Texas 76798-9348
| |
Collapse
|
24
|
Lei J, McLane LT, Curtis JE, Temenoff JS. Characterization of a multilayer heparin coating for biomolecule presentation to human mesenchymal stem cell spheroids. Biomater Sci 2014; 2:666-673. [PMID: 25126416 PMCID: PMC4128496 DOI: 10.1039/c3bm60271k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Mesenchymal stem cells therapies have the potential to treat many pathologies, however, controlling cell fate after implantation remains challenging. We have used a multilayer technology to graft a range of 5 μg/mL - 5 mg/mL heparin onto the surface of MSC aggregates. Heparin coating does not affect cell viability (seen through LIVE/DEAD staining), cell anti-inflammatory properties (seen through co-culture with activated monocytes)and facilitates sequestration by coated cells of a growth factor (TGF-β1) that remains bioactive. This system can maximize therapeutic potential of MSC-based treatments because the cell surface-loaded protein could both signal to the cells to influence transplanted cell fate and be released into the surrounding environment to help repair injured tissue.
Collapse
Affiliation(s)
- J Lei
- Woodruff School of Mechanical Engineering. Georgia Institute of Technology, Atlanta, Georgia, USA
| | - L T McLane
- School of Physics. Georgia Institute of Technology, Atlanta, Georgia, USA
| | - J E Curtis
- School of Physics. Georgia Institute of Technology, Atlanta, Georgia, USA ; Wallace H. Coulter Department of Biomedical Engineering. Georgia Institute of Technology and Emory University, Atlanta, Georgia, USA
| | - J S Temenoff
- Wallace H. Coulter Department of Biomedical Engineering. Georgia Institute of Technology and Emory University, Atlanta, Georgia, USA ; Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, USA
| |
Collapse
|
25
|
Xue M, Jackson CJ. Activated protein C and its potential applications in prevention of islet β-cell damage and diabetes. VITAMINS AND HORMONES 2014; 95:323-63. [PMID: 24559924 DOI: 10.1016/b978-0-12-800174-5.00013-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Activated protein C (APC) is derived from its precursor, protein C (PC). Originally thought to be synthesized exclusively by the liver, recent reports have shown that PC is also produced by many other cells including pancreatic islet β cells. APC functions as a physiological anticoagulant with anti-inflammatory, anti-apoptotic, and barrier-stabilizing properties. APC exerts its protective effects via an intriguing mechanism requiring combinations of endothelial PC receptor, protease-activated receptors, epidermal growth factor receptor, Tie2 or CD11b, depending on cell types. Diabetes is a chronic condition resulted from the body's inability to produce and/or properly use insulin. The prevalence of diabetes has risen dramatically and has become one of the major causes of premature mortality and morbidity worldwide. Diabetes prevention is an ideal approach to reduce this burden. Type 1 and type 2 diabetes are the major forms of diabetes mellitus, and both are characterized by an autoimmune response, intraislet inflammation, β-cell apoptosis, and progressive β-cell loss. Protecting β-cell from damage is critical in both prevention and treatment of diabetes. Recent in vitro and animal studies show that APC's strong anti-inflammatory and anti-apoptotic properties are beneficial in preventing β-cell destruction and diabetes in the NOD mouse model of type 1 diabetes. Future preventive and therapeutic uses of APC in diabetes look very promising.
Collapse
Affiliation(s)
- Meilang Xue
- Sutton Arthritis Research Laboratories, Kolling Institute of Medical Research, The University of Sydney at Royal North Shore Hospital, St Leonards, New South Wales, Australia.
| | - Christopher J Jackson
- Sutton Arthritis Research Laboratories, Kolling Institute of Medical Research, The University of Sydney at Royal North Shore Hospital, St Leonards, New South Wales, Australia
| |
Collapse
|
26
|
Wang L, Jiang R, Sun XL. Recombinant thrombomodulin of different domains for pharmaceutical, biomedical, and cell transplantation applications. Med Res Rev 2013; 34:479-502. [PMID: 23804235 DOI: 10.1002/med.21294] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Thrombomodulin (TM) is a membrane glycoprotein mainly expressed by vascular endothelial cells and is involved in many physiological and pathological processes, such as coagulation, inflammation, cancer development, and embryogenesis. Human TM consists of 557 amino acids divided into five distinct domains: N-terminal lectin-like domain (designated as TMD1); six epidermal growth factor (EGF)-like domain (TMD2); Ser/Thr-rich domain (TMD3); transmembrane domain (TMD4); and cytoplasmic tail domain (TMD5). The different domains are responsible for different biological functions of TM. In the past decades, various domains of TM have been cloned and expressed for TM structural and functional study. Further, recombinant TMs of different domains show promising antithrombotic and anti-inflammatory activity in both rodents and primates and a recombinant soluble TM has been approved for therapeutic application. This review highlights recombinant TMs of diverse structures and their biological functions, as well as the complex interactions of TM with factors involved in the related biological processes. Particularly, recent advances in exploring recombinant TM of different domains for pharmaceutical, biomedical, and cell transplantation applications are summarized.
Collapse
Affiliation(s)
- Lin Wang
- Department of Chemistry, Chemical and Biomedical Engineering, Cleveland State University, Cleveland, Ohio 44115
| | | | | |
Collapse
|
27
|
Zhi ZL, Khan F, Pickup JC. Multilayer nanoencapsulation: a nanomedicine technology for diabetes research and management. Diabetes Res Clin Pract 2013; 100:162-9. [PMID: 23273839 DOI: 10.1016/j.diabres.2012.11.027] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2012] [Accepted: 11/29/2012] [Indexed: 01/14/2023]
Abstract
Nanothickness encapsulation using a layer-by-layer technique has applications in several areas of diabetes research, including improved glucose sensors, islet cell transplantation and oral insulin delivery. We have fabricated microvesicles containing a fluorescence lifetime-based glucose sensing system, with bacterial glucose-binding protein as the glucose receptor. Such sensors are suitable for impregnation in the dermis as a 'smart tattoo' type of non-invasive glucose monitoring technology. Nanoencapsulation of islet cells is intended to alleviate the immediate blood-mediated inflammatory reaction which is responsible for early islet loss post-transplant. In an allogeneic diabetic mouse model, nanoencapsulated islets with phosporylcholine-modified polysaccharide coating, significantly extended survival of transplanted islets. In early studies aimed at formulating an effective oral insulin preparation, insulin-chitosan colloids coated with nanolayers of chitosan and heparin had enhanced acid stability and effectively lowered blood glucose in an animal model.
Collapse
Affiliation(s)
- Zheng-Liang Zhi
- Diabetes Research Group, King's College London School of Medicine, Guy's Hospital, London SE1 1UL, UK
| | | | | |
Collapse
|
28
|
Mets JM, Wilson JT, Cui W, Chaikof EL. An automated process for layer-by-layer assembly of polyelectrolyte multilayer thin films on viable cell aggregates. Adv Healthc Mater 2013. [PMID: 23184761 DOI: 10.1002/adhm.201200148] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
An automated process for modifying the surface of pancreatic islets grows uniform polyelectrolyte multilayer thin films, eliminating user variability associated with previous manual methods. Machine vision feedback allows for tight control of small fluid volumes, maintaining an islet microenvironment. This process is adaptable to other fragile micrometer-scale particle systems.
Collapse
Affiliation(s)
- Joseph M Mets
- Wallace H. Coulter Department of Biomedical Engineering, Emory University School of Medicine, Atlanta, GA 30332, USA
| | | | | | | |
Collapse
|
29
|
van Berkel SS, van Eldijk MB, van Hest JCM. Staudinger ligation as a method for bioconjugation. Angew Chem Int Ed Engl 2011; 50:8806-27. [PMID: 21887733 DOI: 10.1002/anie.201008102] [Citation(s) in RCA: 206] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2010] [Indexed: 11/11/2022]
Abstract
In 1919 the German chemist Hermann Staudinger was the first to describe the reaction between an azide and a phosphine. It was not until recently, however, that Bertozzi and co-workers recognized the potential of this reaction as a method for bioconjugation and transformed it into the so-called Staudinger ligation. The bio-orthogonal character of both the azide and the phosphine functions has resulted in the Staudinger ligation finding numerous applications in various complex biological systems. For example, the Staudinger ligation has been utilized to label glycans, lipids, DNA, and proteins. Moreover, the Staudinger ligation has been used as a synthetic method to construct glycopeptides, microarrays, and functional biopolymers. In the emerging field of bio-orthogonal ligation strategies, the Staudinger ligation has set a high standard to which most of the new techniques are often compared. This Review summarizes recent developments and new applications of the Staudinger ligation.
Collapse
Affiliation(s)
- Sander S van Berkel
- Department of Bioorganic Chemistry, Radboud University Nijmegen, Heyendaalseweg 135, NL-6525 AJ Nijmegen, The Netherlands
| | | | | |
Collapse
|
30
|
van Berkel SS, van Eldijk MB, van Hest JCM. Staudinger-Ligation als Methode zur Biokonjugation. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201008102] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
31
|
Wilson JT, Cui W, Kozlovskaya V, Kharlampieva E, Pan D, Qu Z, Krishnamurthy VR, Mets J, Kumar V, Wen J, Song Y, Tsukruk VV, Chaikof EL. Cell surface engineering with polyelectrolyte multilayer thin films. J Am Chem Soc 2011; 133:7054-64. [PMID: 21491937 DOI: 10.1021/ja110926s] [Citation(s) in RCA: 143] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Layer-by-layer assembly of polyelectrolyte multilayer (PEM) films represents a bottom-up approach for re-engineering the molecular landscape of cell surfaces with spatially continuous and molecularly uniform ultrathin films. However, fabricating PEMs on viable cells has proven challenging owing to the high cytotoxicity of polycations. Here, we report the rational engineering of a new class of PEMs with modular biological functionality and tunable physicochemical properties which have been engineered to abrogate cytotoxicity. Specifically, we have discovered a subset of cationic copolymers that undergoes a conformational change, which mitigates membrane disruption and facilitates the deposition of PEMs on cell surfaces that are tailorable in composition, reactivity, thickness, and mechanical properties. Furthermore, we demonstrate the first successful in vivo application of PEM-engineered cells, which maintained viability and function upon transplantation and were used as carriers for in vivo delivery of PEMs containing biomolecular payloads. This new class of polymeric film and the design strategies developed herein establish an enabling technology for cell transplantation and other therapies based on engineered cells.
Collapse
Affiliation(s)
- John T Wilson
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
32
|
Schilling CI, Jung N, Biskup M, Schepers U, Bräse S. Bioconjugation via azide–Staudinger ligation: an overview. Chem Soc Rev 2011; 40:4840-71. [DOI: 10.1039/c0cs00123f] [Citation(s) in RCA: 234] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
33
|
Abstract
Clinical islet transplantation (CIT), the infusion of allogeneic islets within the liver, has the potential to provide precise and sustainable control of blood glucose levels for the treatment of type 1 diabetes. The success and long-term outcomes of CIT, however, are limited by obstacles such as a nonoptimal transplantation site and severe inflammatory and immunological responses to the transplant. Tissue engineering strategies are poised to combat these challenges. In this review, emerging methods for engineering an optimal islet transplantation site, as well as novel approaches for improving islet cell encapsulation, are discussed.
Collapse
Affiliation(s)
- Jaime A Giraldo
- Diabetes Research Institute, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | | | | |
Collapse
|