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De Giorgio G, Matera B, Vurro D, Manfredi E, Galstyan V, Tarabella G, Ghezzi B, D'Angelo P. Silk Fibroin Materials: Biomedical Applications and Perspectives. Bioengineering (Basel) 2024; 11:167. [PMID: 38391652 PMCID: PMC10886036 DOI: 10.3390/bioengineering11020167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/13/2024] [Accepted: 02/05/2024] [Indexed: 02/24/2024] Open
Abstract
The golden rule in tissue engineering is the creation of a synthetic device that simulates the native tissue, thus leading to the proper restoration of its anatomical and functional integrity, avoiding the limitations related to approaches based on autografts and allografts. The emergence of synthetic biocompatible materials has led to the production of innovative scaffolds that, if combined with cells and/or bioactive molecules, can improve tissue regeneration. In the last decade, silk fibroin (SF) has gained attention as a promising biomaterial in regenerative medicine due to its enhanced bio/cytocompatibility, chemical stability, and mechanical properties. Moreover, the possibility to produce advanced medical tools such as films, fibers, hydrogels, 3D porous scaffolds, non-woven scaffolds, particles or composite materials from a raw aqueous solution emphasizes the versatility of SF. Such devices are capable of meeting the most diverse tissue needs; hence, they represent an innovative clinical solution for the treatment of bone/cartilage, the cardiovascular system, neural, skin, and pancreatic tissue regeneration, as well as for many other biomedical applications. The present narrative review encompasses topics such as (i) the most interesting features of SF-based biomaterials, bare SF's biological nature and structural features, and comprehending the related chemo-physical properties and techniques used to produce the desired formulations of SF; (ii) the different applications of SF-based biomaterials and their related composite structures, discussing their biocompatibility and effectiveness in the medical field. Particularly, applications in regenerative medicine are also analyzed herein to highlight the different therapeutic strategies applied to various body sectors.
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Affiliation(s)
- Giuseppe De Giorgio
- IMEM-CNR, Institute of Materials for Electronics and Magnetism-National Research Council, Parco Area delle Scienze 37/A, 43124 Parma, Italy
| | - Biagio Matera
- Center of Dental Medicine, Department of Medicine and Surgery, University of Parma, Via Gramsci 14/A, 43126 Parma, Italy
| | - Davide Vurro
- IMEM-CNR, Institute of Materials for Electronics and Magnetism-National Research Council, Parco Area delle Scienze 37/A, 43124 Parma, Italy
| | - Edoardo Manfredi
- Center of Dental Medicine, Department of Medicine and Surgery, University of Parma, Via Gramsci 14/A, 43126 Parma, Italy
| | - Vardan Galstyan
- IMEM-CNR, Institute of Materials for Electronics and Magnetism-National Research Council, Parco Area delle Scienze 37/A, 43124 Parma, Italy
- Department of Engineering "Enzo Ferrari", University of Modena and Reggio Emilia, Via Vivarelli 10, 41125 Modena, Italy
| | - Giuseppe Tarabella
- IMEM-CNR, Institute of Materials for Electronics and Magnetism-National Research Council, Parco Area delle Scienze 37/A, 43124 Parma, Italy
| | - Benedetta Ghezzi
- IMEM-CNR, Institute of Materials for Electronics and Magnetism-National Research Council, Parco Area delle Scienze 37/A, 43124 Parma, Italy
- Center of Dental Medicine, Department of Medicine and Surgery, University of Parma, Via Gramsci 14/A, 43126 Parma, Italy
| | - Pasquale D'Angelo
- IMEM-CNR, Institute of Materials for Electronics and Magnetism-National Research Council, Parco Area delle Scienze 37/A, 43124 Parma, Italy
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Singh G, Satpathi S, Gopala Reddy BV, Singh MK, Sarangi S, Behera PK, Nayak B. Impact of various detergent-based immersion and perfusion decellularization strategies on the novel caprine pancreas derived extracellular matrix scaffold. Front Bioeng Biotechnol 2023; 11:1253804. [PMID: 37790257 PMCID: PMC10544968 DOI: 10.3389/fbioe.2023.1253804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 09/05/2023] [Indexed: 10/05/2023] Open
Abstract
Limited availability of the organs donors has facilitated the establishment of xenogeneic organ sources for transplantation. Numerous studies have decellularized several organs and assessed their implantability in order to provide such organs. Among all the decellularized organs studies for xenotransplantation, the pancreas has garnered very limited amount of research. The presently offered alternatives for pancreas transplantation are unable to liberate patients from donor dependence. The rat and mice pancreas are not of an accurate size for transplantation but can only be used for in-vitro studies mimicking in-vivo immune response in humans, while the porcine pancreas can cause zoonotic diseases as it carries porcine endogenous retrovirus (PERV- A/B/C). Therefore, we propose caprine pancreas as a substitute for these organs, which not only reduces donor dependence but also poses no risk of zoonosis. Upon decellularization the extracellular matrix (ECM) of different tissues responds differently to the detergents used for decellularization at physical and physiological level; this necessitates a comprehensive analysis of each tissue independently. This study investigates the impact of decellularization by ionic (SDS and SDC), non-ionic (Triton X-100 and Tween-20), and zwitterionic detergents (CHAPS). All these five detergents have been used to decellularize caprine pancreas via immersion (ID) and perfusion (PD) set-up. In this study, an extensive comparison of these two configurations (ID and PD) with regard to each detergent has been conducted. The final obtained scaffold with each set-up has been evaluated for the left-over cytosolic content, ECM components like sGAG, collagen, and fibronectin were estimated via Prussian blue and Immunohistochemical staining respectively, and finally for the tensile strength and antimicrobial activity. All the detergents performed consistently superior in PD than in ID. Conclusively, PD with SDS, SDC, and TX-100 successfully decellularizes caprine pancreatic tissue while retaining ECM architecture and mechanical properties. This research demonstrates the viability of caprine pancreatic tissue as a substitute scaffold for porcine organs and provides optimal decellularization protocol for this xenogeneic tissue. This research aims to establish a foundation for further investigations into potential regenerative strategies using this ECM in combination with other factors.
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Affiliation(s)
- Garima Singh
- Immunology and Molecular Medicine Laboratory, Department of Life Science, National Institute of Technology, Rourkela, India
| | | | - Bora Venu Gopala Reddy
- Immunology and Molecular Medicine Laboratory, Department of Life Science, National Institute of Technology, Rourkela, India
| | - Manish Kumar Singh
- Immunology and Molecular Medicine Laboratory, Department of Life Science, National Institute of Technology, Rourkela, India
| | - Samchita Sarangi
- Immunology and Molecular Medicine Laboratory, Department of Life Science, National Institute of Technology, Rourkela, India
| | | | - Bismita Nayak
- Immunology and Molecular Medicine Laboratory, Department of Life Science, National Institute of Technology, Rourkela, India
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Li H, Shang Y, Feng Q, Liu Y, Chen J, Dong H. A novel bioartificial pancreas fabricated via islets microencapsulation in anti-adhesive core-shell microgels and macroencapsulation in a hydrogel scaffold prevascularized in vivo. Bioact Mater 2023; 27:362-376. [PMID: 37180642 PMCID: PMC10172916 DOI: 10.1016/j.bioactmat.2023.04.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 03/30/2023] [Accepted: 04/11/2023] [Indexed: 05/16/2023] Open
Abstract
Islets transplantation is a promising treatment for type 1 diabetes mellitus. However, severe host immune rejection and poor oxygen/nutrients supply due to the lack of surrounding capillary network often lead to transplantation failure. Herein, a novel bioartificial pancreas is constructed via islets microencapsulation in core-shell microgels and macroencapsulation in a hydrogel scaffold prevascularized in vivo. Specifically, a hydrogel scaffold containing methacrylated gelatin (GelMA), methacrylated heparin (HepMA) and vascular endothelial growth factor (VEGF) is fabricated, which can delivery VEGF in a sustained style and thus induce subcutaneous angiogenesis. In addition, islets-laden core-shell microgels using methacrylated hyaluronic acid (HAMA) as microgel core and poly(ethylene glycol) diacrylate (PEGDA)/carboxybetaine methacrylate (CBMA) as shell layer are prepared, which provide a favorable microenvironment for islets and simultaneously the inhibition of host immune rejection via anti-adhesion of proteins and immunocytes. As a result of the synergistic effect between anti-adhesive core-shell microgels and prevascularized hydrogel scaffold, the bioartificial pancreas can reverse the blood glucose levels of diabetic mice from hyperglycemia to normoglycemia for at least 90 days. We believe this bioartificial pancreas and relevant fabrication method provide a new strategy to treat type 1 diabetes, and also has broad potential applications in other cell therapies.
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Affiliation(s)
- Haofei Li
- School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510006, China
- National Engineering Research Center for Tissue Restoration and Reconstruction (NERC-TRR), Guangzhou, 510006, China
- Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education, South China University of Technology, Guangzhou, 510006, China
| | - Yulian Shang
- School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510006, China
- National Engineering Research Center for Tissue Restoration and Reconstruction (NERC-TRR), Guangzhou, 510006, China
- School of Biomedical Science and Engineering, South China University of Technology, Guangzhou, 510006, China
| | - Qi Feng
- School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510006, China
- National Engineering Research Center for Tissue Restoration and Reconstruction (NERC-TRR), Guangzhou, 510006, China
- Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education, South China University of Technology, Guangzhou, 510006, China
- Guangdong Province Key Laboratory of Biomedical Engineering, South China University of Technology, Guangzhou, 510641, China
| | - Yang Liu
- School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510006, China
- National Engineering Research Center for Tissue Restoration and Reconstruction (NERC-TRR), Guangzhou, 510006, China
- Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education, South China University of Technology, Guangzhou, 510006, China
| | - Junlin Chen
- School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510006, China
- National Engineering Research Center for Tissue Restoration and Reconstruction (NERC-TRR), Guangzhou, 510006, China
- Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education, South China University of Technology, Guangzhou, 510006, China
| | - Hua Dong
- School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510006, China
- National Engineering Research Center for Tissue Restoration and Reconstruction (NERC-TRR), Guangzhou, 510006, China
- Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education, South China University of Technology, Guangzhou, 510006, China
- Guangdong Province Key Laboratory of Biomedical Engineering, South China University of Technology, Guangzhou, 510641, China
- Corresponding author. School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510006, China.
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Chen N, Jin W, Gao H, Hong J, Sun L, Yao J, Chen X, Chen J, Chen S, Shao Z. Sequential intervention of anti-inflammatory and osteogenesis with silk fibroin coated polyethylene terephthalate artificial ligaments for anterior cruciate ligament reconstruction. J Mater Chem B 2023; 11:8281-8290. [PMID: 37584321 DOI: 10.1039/d3tb00911d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/17/2023]
Abstract
Graft-host integration after the anterior cruciate ligament (ACL) reconstruction sequentially follows the prognosis from the inflammation period to the regeneration period. However, due to insufficient bioactivity, polyethylene terephthalate (PET) artificial ligaments often require a long period for graft-host integration. To improve graft-host integration, sequential therapy targeting multifactor is widely advocated. In this study, a multilayer regenerated silk fibroin (RSF) coating loaded with heparin and bone morphogenetic protein binding peptide (BBP) for differentiated release was introduced on the surface of the PET artificial ligament by a stepwise deposition method. The drug release profiles of heparin and BBP on the coated PET artificial ligament indicated the features of differential drug release, i.e., with heparin in the outermost layer releasing a significant amount (more than 60%) during the first 5 days while BBP in the inner layer only releasing a small amount (ca. 30%) within 1 week without burst release. Based on the isometric ACL reconstruction model of rabbits, such drug-loaded RSF coating was verified to be able to modulate the early inflammatory response and promote the maturation of the graft in the articular cavity, meanwhile, it provided a continuous and stable signal of osteogenic induction to improve graft-bone integration. Thus, sequential intervention with heparin and BBP proved to be a reliable combination, and multifunctional RSF-coated PET artificial ligaments hold great potential for improving the clinical efficacy of ACL reconstruction.
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Affiliation(s)
- Ni Chen
- State Key Laboratory of Molecular Engineering of Polymers, Laboratory of Advanced Materials and Department of Macromolecular Science, Fudan University, Shanghai 200433, China.
| | - Wenhe Jin
- Sports Medicine Insititute of Fudan University, Department of Sports Medicine, Huashan Hospital, Fudan University, 12 Middle Wulumuqi Road, Shanghai, 200040, China.
| | - Han Gao
- Sports Medicine Insititute of Fudan University, Department of Sports Medicine, Huashan Hospital, Fudan University, 12 Middle Wulumuqi Road, Shanghai, 200040, China.
| | - Jiachan Hong
- State Key Laboratory of Molecular Engineering of Polymers, Laboratory of Advanced Materials and Department of Macromolecular Science, Fudan University, Shanghai 200433, China.
| | - Luyi Sun
- Sports Medicine Insititute of Fudan University, Department of Sports Medicine, Huashan Hospital, Fudan University, 12 Middle Wulumuqi Road, Shanghai, 200040, China.
| | - Jinrong Yao
- State Key Laboratory of Molecular Engineering of Polymers, Laboratory of Advanced Materials and Department of Macromolecular Science, Fudan University, Shanghai 200433, China.
| | - Xin Chen
- State Key Laboratory of Molecular Engineering of Polymers, Laboratory of Advanced Materials and Department of Macromolecular Science, Fudan University, Shanghai 200433, China.
| | - Jun Chen
- Sports Medicine Insititute of Fudan University, Department of Sports Medicine, Huashan Hospital, Fudan University, 12 Middle Wulumuqi Road, Shanghai, 200040, China.
| | - Shiyi Chen
- Sports Medicine Insititute of Fudan University, Department of Sports Medicine, Huashan Hospital, Fudan University, 12 Middle Wulumuqi Road, Shanghai, 200040, China.
| | - Zhengzhong Shao
- State Key Laboratory of Molecular Engineering of Polymers, Laboratory of Advanced Materials and Department of Macromolecular Science, Fudan University, Shanghai 200433, China.
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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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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.
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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.
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Geng Z, Zhang Q, Li T, Huang T, Wang H, Zhou Q, Deng S, Zhao Y, Li Y, Cheng C, Gonelle-Gispert C, Buhler LH, Wang Y. Advantages of the retroperitoneal retrocolic space as the transplant site for encapsulated xenogeneic islets. Xenotransplantation 2023; 30:e12787. [PMID: 36454040 DOI: 10.1111/xen.12787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 10/14/2022] [Accepted: 10/18/2022] [Indexed: 12/03/2022]
Abstract
OBJECTIVE Islet allotransplantation has demonstrated improved clinical outcomes using the hepatic portal vein as the standard infusion method. However, the current implantation site is not ideal due to the short-term thrombotic and long-term immune destruction. Meanwhile, the shortage of human organ donors further limits its application. To find a new strategy, we tested a new polymer combination for islet encapsulation and transplantation. Meanwhile, we explored a new site for xenogeneic islet transplantation in mice. METHOD We synthesized a hydrogel combining alginate plus poly-ethylene-imine (Alg/PEI) for the encapsulation of rat, neonatal porcine, and human islets. Transplantation was performed into the retroperitoneal retro-colic space of diabetic mice. Control mice received free islets under the kidney capsule or encapsulated islets into the peritoneum. The biochemical indexes were measured, and the transplanted islets were harvested for immunohistochemical staining of insulin and glucagon. RESULTS Mice receiving encapsulated rat, porcine and human islets transplanted into the retroperitoneal space maintained normoglycemia for a median of 275, 145.5, and 146 days, respectively. In contrast, encapsulated xenogeneic islets transplanted into the peritoneum, maintained function for a median of 61, 95.5, and 82 days, respectively. Meanwhile, xenogeneic islets transplanted free into the kidney capsule lost their function within 3 days after transplantation. Immunohistochemical staining of encapsulated rat, porcine and human islets, retrieved from the retroperitoneal space, allowed to distinguish morphological normal insulin expressing β- and glucagon expressing α-cells at 70, 60, and 100 days post-transplant, respectively. CONCLUSION Transplantation of Alg/PEI encapsulated xenogeneic islets into the retroperitoneal space provides a valuable new implantation strategy for the treatment of type 1 diabetes.
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Affiliation(s)
- Zhen Geng
- Health Management Center, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Qi Zhang
- School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Ting Li
- Department of Rheumatology, Wenjiang District People's Hospital, Chengdu, China
| | - Ting Huang
- Department of Breast Surgery, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Hailian Wang
- Clinical Immunology Translational Medicine Key Laboratory of Sichuan Province, Institute of Organ Transplantation, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Qiao Zhou
- Department of Rheumatology and Immunology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Shaoping Deng
- Clinical Immunology Translational Medicine Key Laboratory of Sichuan Province, Institute of Organ Transplantation, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Yanshuang Zhao
- School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Yanjiao Li
- School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Chunming Cheng
- Department of Radiation Oncology, James Comprehensive Cancer Center and College of Medicine, The Ohio State University, Columbus, Ohio, USA
| | | | - Leo H Buhler
- Faculty of Science and Medicine, University of Fribourg, Fribourg, Switzerland
| | - Yi Wang
- Department of Critical Care Medicine, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, 610072, China
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Pignatelli C, Campo F, Neroni A, Piemonti L, Citro A. Bioengineering the Vascularized Endocrine Pancreas: A Fine-Tuned Interplay Between Vascularization, Extracellular-Matrix-Based Scaffold Architecture, and Insulin-Producing Cells. TRANSPLANT INTERNATIONAL : OFFICIAL JOURNAL OF THE EUROPEAN SOCIETY FOR ORGAN TRANSPLANTATION 2022; 35:10555. [PMID: 36090775 PMCID: PMC9452644 DOI: 10.3389/ti.2022.10555] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 08/11/2022] [Indexed: 11/23/2022]
Abstract
Intrahepatic islet transplantation is a promising β-cell replacement strategy for the treatment of type 1 diabetes. Instant blood-mediated inflammatory reactions, acute inflammatory storm, and graft revascularization delay limit islet engraftment in the peri-transplant phase, hampering the success rate of the procedure. Growing evidence has demonstrated that islet engraftment efficiency may take advantage of several bioengineering approaches aimed to recreate both vascular and endocrine compartments either ex vivo or in vivo. To this end, endocrine pancreas bioengineering is an emerging field in β-cell replacement, which might provide endocrine cells with all the building blocks (vascularization, ECM composition, or micro/macro-architecture) useful for their successful engraftment and function in vivo. Studies on reshaping either the endocrine cellular composition or the islet microenvironment have been largely performed, focusing on a single building block element, without, however, grasping that their synergistic effect is indispensable for correct endocrine function. Herein, the review focuses on the minimum building blocks that an ideal vascularized endocrine scaffold should have to resemble the endocrine niche architecture, composition, and function to foster functional connections between the vascular and endocrine compartments. Additionally, this review highlights the possibility of designing bioengineered scaffolds integrating alternative endocrine sources to overcome donor organ shortages and the possibility of combining novel immune-preserving strategies for long-term graft function.
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Affiliation(s)
- Cataldo Pignatelli
- San Raffaele Diabetes Research Institute, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Francesco Campo
- San Raffaele Diabetes Research Institute, IRCCS San Raffaele Scientific Institute, Milan, Italy.,Università Vita-Salute San Raffaele, Milan, Italy
| | - Alessia Neroni
- San Raffaele Diabetes Research Institute, IRCCS San Raffaele Scientific Institute, Milan, Italy.,Università Vita-Salute San Raffaele, Milan, Italy
| | - Lorenzo Piemonti
- San Raffaele Diabetes Research Institute, IRCCS San Raffaele Scientific Institute, Milan, Italy.,Università Vita-Salute San Raffaele, Milan, Italy
| | - Antonio Citro
- San Raffaele Diabetes Research Institute, IRCCS San Raffaele Scientific Institute, Milan, Italy
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9
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Zhang Q, Gonelle-Gispert C, Li Y, Geng Z, Gerber-Lemaire S, Wang Y, Buhler L. Islet Encapsulation: New Developments for the Treatment of Type 1 Diabetes. Front Immunol 2022; 13:869984. [PMID: 35493496 PMCID: PMC9046662 DOI: 10.3389/fimmu.2022.869984] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Accepted: 03/16/2022] [Indexed: 12/21/2022] Open
Abstract
Islet transplantation is a promising approach for the treatment of type 1 diabetes (T1D). Currently, clinical islet transplantation is limited by allo - and autoimmunity that may cause partial or complete loss of islet function within a short period of time, and long-term immunosuppression is required to prevent rejection. Encapsulation into semipermeable biomaterials provides a strategy that allows nutrients, oxygen and secreted hormones to diffuse through the membrane while blocking immune cells and the like out of the capsule, allowing long-term graft survival and avoiding long-term use of immunosuppression. In recent years, a variety of engineering strategies have been developed to improve the composition and properties of encapsulation materials and to explore the clinical practicality of islet cell transplantation from different sources. In particular, the encapsulation of porcine islet and the co-encapsulation of islet cells with other by-standing cells or active ingredients for promoting long-term functionality, attracted significant research efforts. Hydrogels have been widely used for cell encapsulation as well as other therapeutic applications including tissue engineering, cell carriers or drug delivery. Here, we review the current status of various hydrogel biomaterials, natural and synthetic, with particular focus on islet transplantation applications. Natural hydrophilic polymers include polysaccharides (starch, cellulose, alginic acid, hyaluronic acid, chitosan) and peptides (collagen, poly-L-lysine, poly-L-glutamic acid). Synthetic hydrophilic polymers include alcohol, acrylic acid and their derivatives [poly (acrylic acid), poly (methacrylic acid), poly(acrylamide)]. By understanding the advantages and disadvantages of materials from different sources and types, appropriate materials and encapsuling methods can be designed and selected as needed to improve the efficacy and duration of islet. Islet capsule transplantation is emerging as a promising future treatment for T1D.
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Affiliation(s)
- Qi Zhang
- School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | | | - Yanjiao Li
- School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Zhen Geng
- Clinical Immunology Translational Medicine Key Laboratory of Sichuan Province, Center of Organ Transplantation, Sichuan Academy of Medical Science and Sichuan Provincial People’s Hospital, Chengdu, China
- Institute of Organ Transplantation, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chinese Academy of Sciences, Sichuan Translational Medicine Research Hospital, Chengdu, China
| | - Sandrine Gerber-Lemaire
- Group for Functionalized Biomaterials, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), EPFL SB ISIC SCI-SB-SG, Lausanne, Switzerland
- *Correspondence: Leo Buhler, ; Yi Wang, ; Sandrine Gerber-Lemaire,
| | - Yi Wang
- Clinical Immunology Translational Medicine Key Laboratory of Sichuan Province, Center of Organ Transplantation, Sichuan Academy of Medical Science and Sichuan Provincial People’s Hospital, Chengdu, China
- Institute of Organ Transplantation, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chinese Academy of Sciences, Sichuan Translational Medicine Research Hospital, Chengdu, China
- *Correspondence: Leo Buhler, ; Yi Wang, ; Sandrine Gerber-Lemaire,
| | - Leo Buhler
- Faculty of Science and Medicine, University of Fribourg, Fribourg, Switzerland
- Clinical Immunology Translational Medicine Key Laboratory of Sichuan Province, Center of Organ Transplantation, Sichuan Academy of Medical Science and Sichuan Provincial People’s Hospital, Chengdu, China
- Institute of Organ Transplantation, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chinese Academy of Sciences, Sichuan Translational Medicine Research Hospital, Chengdu, China
- *Correspondence: Leo Buhler, ; Yi Wang, ; Sandrine Gerber-Lemaire,
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10
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Quizon MJ, García AJ. Engineering β Cell Replacement Therapies for Type 1 Diabetes: Biomaterial Advances and Considerations for Macroscale Constructs. ANNUAL REVIEW OF PATHOLOGY 2022; 17:485-513. [PMID: 34813353 DOI: 10.1146/annurev-pathol-042320-094846] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
While significant progress has been made in treatments for type 1 diabetes (T1D) based on exogenous insulin, transplantation of insulin-producing cells (islets or stem cell-derived β cells) remains a promising curative strategy. The current paradigm for T1D cell therapy is clinical islet transplantation (CIT)-the infusion of islets into the liver-although this therapeutic modality comes with its own limitations that deteriorate islet health. Biomaterials can be leveraged to actively address the limitations of CIT, including undesired host inflammatory and immune responses, lack of vascularization, hypoxia, and the absence of native islet extracellular matrix cues. Moreover, in efforts toward a clinically translatable T1D cell therapy, much research now focuses on developing biomaterial platforms at the macroscale, at which implanted platforms can be easily retrieved and monitored. In this review, we discuss how biomaterials have recently been harnessed for macroscale T1D β cell replacement therapies.
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Affiliation(s)
- Michelle J Quizon
- George W. Woodruff School of Mechanical Engineering and Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332, USA; ,
| | - Andrés J García
- George W. Woodruff School of Mechanical Engineering and Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332, USA; ,
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11
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Yu X, Su Q, Chang X, Chen K, Yuan P, Liu T, Tian R, Bai Y, Zhang Y, Chen X. Multimodal obstruction of tumorigenic energy supply via bionic nanocarriers for effective tumor therapy. Biomaterials 2021; 278:121181. [PMID: 34653932 DOI: 10.1016/j.biomaterials.2021.121181] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 09/05/2021] [Accepted: 10/07/2021] [Indexed: 12/11/2022]
Abstract
Sufficient energy generation based on effective transport of nutrient via abundant blood vessels in tumor tissue and subsequent oxidative metabolism in mitochondria is critical for growth, proliferation and migration of tumor. Thus the strategy to cut off this transport pathway (blood vessels) and simultaneously close the power house (mitochondria) is highly desired for tumor treatment. Herein, we fabricated a bionic nanocarrier with core-shell-corona structure to give selective and effective tumor therapy via stepwise destruction of existed tumor vessel, inhibition of tumor angiogenesis and dysfunction of tumor mitochondria. The core of this bionic nanocarrier consists of combretastatin A4 phosphate (CA4P) and vitamin K2 (VK2) co-loaded mesoporous silica nanoparticle (MSNs), which is in charge of the vasculature destruction and mitochondrial dysfunction after cargos release. The N-tert-butylacrylamide (TBAM) and tri-sulfated N-acetylglucosamine (TSAG) shell served as artificial affinity reagent against vascular endothelial growth factor (VEGF) for angiogenesis inhibition. As to guarantee that these actions only happened in tumor, the hyaluronic acid (HA) corona was introduced to endow the nanocarrier with tumor targeting property and stimuli-responsiveness for accurate therapy. Both in vitro and in vivo results indicated that the CA4P/VK2-MSNs-TBAM/TSAG-HA (CVMMGH for short) nanocarrier combined well-controllable manipulation of tumor vasculature and tumor mitochondria to effectivly cut off the tumorigenic energy supply, which performed significant inhibition of tumor growth, demonstrating the great candidate of our strategy for effective tumor therapy.
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Affiliation(s)
- Xiaoqian Yu
- Department of Chemical Engineering, Shaanxi Key Laboratory of Energy Chemical Process Intensification, Institute of Polymer Science in Chemical Engineering, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Qi Su
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, PR China
| | - Xiaowei Chang
- Department of Chemical Engineering, Shaanxi Key Laboratory of Energy Chemical Process Intensification, Institute of Polymer Science in Chemical Engineering, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Kun Chen
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, PR China
| | - Pingyun Yuan
- Department of Chemical Engineering, Shaanxi Key Laboratory of Energy Chemical Process Intensification, Institute of Polymer Science in Chemical Engineering, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Tao Liu
- Department of Chemical Engineering, Shaanxi Key Laboratory of Energy Chemical Process Intensification, Institute of Polymer Science in Chemical Engineering, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Ran Tian
- Department of Chemical Engineering, Shaanxi Key Laboratory of Energy Chemical Process Intensification, Institute of Polymer Science in Chemical Engineering, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Yongkang Bai
- Department of Chemical Engineering, Shaanxi Key Laboratory of Energy Chemical Process Intensification, Institute of Polymer Science in Chemical Engineering, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Yanmin Zhang
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, PR China.
| | - Xin Chen
- Department of Chemical Engineering, Shaanxi Key Laboratory of Energy Chemical Process Intensification, Institute of Polymer Science in Chemical Engineering, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, China.
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12
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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 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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13
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Strategies for Vascularizing Pancreatic Islets and Stem Cell–Derived Islet Organoids. CURRENT TRANSPLANTATION REPORTS 2021. [DOI: 10.1007/s40472-021-00334-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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14
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Nakayama-Iwatsuki K, Hirabayashi M, Hochi S. Fabrication of functional rat pseudo-islets after cryopreservation of pancreatic islets or dispersed islet cells. J Tissue Eng Regen Med 2021; 15:686-696. [PMID: 33999537 DOI: 10.1002/term.3219] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 04/30/2021] [Accepted: 05/03/2021] [Indexed: 11/12/2022]
Abstract
Dispersed single cells from pancreatic islets can configure the three-dimensional islet-like architecture (pseudo-islets) with insulin secretion potential and controllable size through their aggregation property. The present study was designed to investigate whether cryopreservation of islets or islet cells can contribute to the efficient pseudo-islet fabrication in the rat model. In control group (CT), islet single cells were prepared by trypsin digestion of 50-400-µm ø fresh control islets, and then cultured for 3 days in the U-bottom microwell to fabricate pseudo-islets. In vitrification-warming group (VW), islet single cells were prepared from postwarm islets cryopreserved by vitrification on nylon mesh device, and then cultured for 3 days. In freezing group (FR), islet single cells originated from fresh islets were subjected to a conventional Bicell® freezing, and postthaw cells were cultured for 3 days. To generate 1 islet equivalent pseudo-islets (150 µm ø) by the sphere culture, 1250 CT cells, 1250 VW cells, and 1500 FR cells were seeded to each microwell. The viability of the pseudo-islets was comparable among the three groups (93.9%-96.9%). Furthermore, the insulin secretion assay showed that those pseudo-islets responded sufficiently to the high glucose stimulation. Immunostaining for insulin and glucagon showed that the endocrine cell arrangement of those pseudo-islets is similar to that of native and isolated islets. These islets/pseudo-islets had the β-cells in core and the α-cells in mantle, which was typical characteristic of the rodent islets. However, some clusters of α-cells were observed inside the FR pseudo-islets. Interestingly, the VW pseudo-islets had significantly fewer α-cells than the CT or FR pseudo-islets. These results suggest that the sphere culture of islet cells is useful tool to generate the pseudo-islets with the customized size and normal functionality, even after islet cryopreservation.
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Affiliation(s)
- Kenyu Nakayama-Iwatsuki
- Graduate School of Medicine, Science and Technology, Shinshu University, Ueda, Nagano, Japan
- National Institute for Physiological Sciences, Okazaki, Aichi, Japan
| | - Masumi Hirabayashi
- National Institute for Physiological Sciences, Okazaki, Aichi, Japan
- School of Life Science, The Graduate University for Advanced Studies, Okazaki, Aichi, Japan
| | - Shinichi Hochi
- Graduate School of Medicine, Science and Technology, Shinshu University, Ueda, Nagano, Japan
- Faculty of Textile Science and Technology, Shinshu University, Ueda, Nagano, Japan
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15
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Tissue Engineering Strategies for Improving Beta Cell Transplantation Outcome. CURRENT TRANSPLANTATION REPORTS 2021. [DOI: 10.1007/s40472-021-00333-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Abstract
Purpose of Review
Beta cell replacement therapy as a form of islet transplantation is a promising alternative therapy with the possibility to make selected patients with type 1 diabetes (T1D) insulin independent. However, this technique faces challenges such as extensive activation of the host immune system post-transplantation, lifelong need for immunosuppression, and the scarcity of islet donor pancreas. Advancement in tissue engineering strategies can improve these challenges and allow for a more widespread application of this therapy. This review will discuss the recent development and clinical translation of tissue engineering strategies in beta cell replacement therapy.
Recent Findings
Tissue engineering offers innovative solutions for producing unlimited glucose responsive cells and fabrication of appropriate devices/scaffolds for transplantation applications. Generation of pancreatic organoids with supporting cells in biocompatible biomaterials is a powerful technique to improve the function of insulin-producing cell clusters. Fabrication of physical barriers such as encapsulation strategies can protect the cells from the host immune system and allow for graft retrieval, although this strategy still faces major challenges to fully restore physiological glucose regulation.
Summary
The three main components of tissue engineering strategies including the generation of stem cell-derived insulin-producing cells and organoids and the possibilities for therapeutic delivery of cell-seeded devices to extra-hepatic sites need to come together in order to provide safe and functional insulin-producing devices for clinical beta cell replacement therapy.
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16
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Yamanaka T, Nakayama-Iwatsuki K, Fujimoto S, Hirono N, Negishi J, Tamada Y, Hirabayashi M, Hochi S. All-in-One Silk Fibroin Sponge as the Vitrification Cryodevice of Rat Pancreatic Islets and the VEGF-Embedded Scaffold for Subrenal Transplantation. Transplant Proc 2021; 53:1744-1750. [PMID: 34052022 DOI: 10.1016/j.transproceed.2021.04.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Accepted: 04/05/2021] [Indexed: 12/19/2022]
Abstract
Islet transplantation is a promising option for the clinical treatment of insulin-dependent diabetes, but a reliable islet cryopreservation/transplantation protocol should be established to overcome the donor shortage. The current study reports that a silk fibroin (SF) sponge disk can be used as a cryodevice for vitrification of large quantity pancreatic islets and the scaffold for subsequent subrenal transplantation in a rat model. The marginal islet mass (550 islet equivalents [IEQs]) on an SF sponge disk was vitrified-warmed and transplanted beneath the kidney capsule of a streptozotocin-induced diabetic rat with or without vascular endothelial growth factor (VEGF). Subrenal transplantation (no scaffold) of 550 IEQ fresh islets and post-warm islets vitrified on a nylon mesh device resulted in achieving euglycemia of recipient rats at 60% and 0%, respectively. Transplantation of 550 IEQ islets vitrified-warmed on an SF sponge disk failed to achieve euglycemia of recipient rats (0%), but the VEGF inclusion in the SF sponge disk contributed to acquiring the euglycemic recipients (33%). All cured recipient rats regained hyperglycemia after nephrectomy, and the histopathologic analysis exhibited a well-developing blood vessel network into the islet engrafts. Thus, an SF sponge disc was successively available as the cryodevice for islet vitrification, the transporter of the angiogenic VEGF, and the scaffold for subrenal transplantation in the rat model.
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Affiliation(s)
- Takahiro Yamanaka
- Graduate School of Medicine, Science and Technology, Shinshu University, Ueda, Nagano, Japan
| | - Kenyu Nakayama-Iwatsuki
- Graduate School of Science and Technology, Shinshu University, Ueda, Nagano, Japan; Center for Genetic Analysis of Behavior, National Institute for Physiological Sciences, Okazaki, Aichi, Japan
| | - Sora Fujimoto
- Faculty of Textile Science and Technology, Shinshu University, Ueda, Nagano, Japan
| | - Naoki Hirono
- Faculty of Textile Science and Technology, Shinshu University, Ueda, Nagano, Japan
| | - Jun Negishi
- Graduate School of Medicine, Science and Technology, Shinshu University, Ueda, Nagano, Japan; Graduate School of Science and Technology, Shinshu University, Ueda, Nagano, Japan; Faculty of Textile Science and Technology, Shinshu University, Ueda, Nagano, Japan
| | - Yasushi Tamada
- Graduate School of Medicine, Science and Technology, Shinshu University, Ueda, Nagano, Japan; Graduate School of Science and Technology, Shinshu University, Ueda, Nagano, Japan; Faculty of Textile Science and Technology, Shinshu University, Ueda, Nagano, Japan
| | - Masumi Hirabayashi
- Center for Genetic Analysis of Behavior, National Institute for Physiological Sciences, Okazaki, Aichi, Japan; School of Life Science, The Graduate University of Advanced Studies, Okazaki, Aichi, Japan
| | - Shinichi Hochi
- Graduate School of Medicine, Science and Technology, Shinshu University, Ueda, Nagano, Japan; Graduate School of Science and Technology, Shinshu University, Ueda, Nagano, Japan; Faculty of Textile Science and Technology, Shinshu University, Ueda, Nagano, Japan.
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17
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Zhao B, Dong Z, Liu W, Lou F, Wang Q, Hong H, Wang Y. Co-administration of combretastatin A4 nanoparticles and anti-PD-L1 for synergistic therapy of hepatocellular carcinoma. J Nanobiotechnology 2021; 19:124. [PMID: 33933077 PMCID: PMC8088584 DOI: 10.1186/s12951-021-00865-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 04/19/2021] [Indexed: 11/17/2022] Open
Abstract
Background According to data estimated by the WHO, primary liver cancer is currently the fourth most common malignant tumor and the second leading cause of death around the world. Hepatocellular carcinoma (HCC) is one of the most common primary liver malignancies, so effective therapy is highly desired for HCC. Results In this study, the use of poly(l-Aspartic acid)-poly(ethylene glycol)/combretastatin A4 (CA4-NPs) was aimed to significantly disrupt new blood vessels in tumor tissues for targeted hepatic tumor therapy. Here, PEG-b-PAsp-g-CA4 showed significantly prolonged retention in plasma and tumor tissue. Most importantly, CA4-NPs were mainly distributed at the tumor site because of the triple target effects—enhanced permeability and retention (EPR) effect, acid-sensitive (pH = 5.5) effect to the tumor microenvironment (TME), and good selectivity of CA4 for central tumor blood vessel. Considering that CA4-NPs might induce severe hypoxic conditions resulting in high expression of HIF-1α in tumor tissues, which could induce the overexpression of PD-L1, herein we also used a programmed death-ligand 1 antibody (aPD-L1) to prevent immunosuppression. This way of complementary combination is able to achieve an ideal treatment effect in tumor site where CA4-NPs and aPD-L1 could respond to the inner area and peripheral area, respectively. As a result, a significant decrease in tumor volume and weight was observed in the combination group of CA4-NPs plus aPD-L1 compared with CA4-NPs or aPD-L1 monotherapy in subcutaneous Hepa1-6 hepatic tumor models. Conclusions We presented a new idea that co-administration of CA4-NPs and aPD-L1 possessed notable anti-tumor efficacy for HCC treatment. Graphic abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s12951-021-00865-w.
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Affiliation(s)
- Bonan Zhao
- Key Laboratory of Biomedical Functional Materials, School of Sciences, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, 211198, China
| | - Zhipeng Dong
- Key Laboratory of Biomedical Functional Materials, School of Sciences, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, 211198, China
| | - Weixing Liu
- Key Laboratory of Biomedical Functional Materials, School of Sciences, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, 211198, China
| | - Fangning Lou
- Key Laboratory of Biomedical Functional Materials, School of Sciences, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, 211198, China
| | - Qiyan Wang
- Key Laboratory of Biomedical Functional Materials, School of Sciences, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, 211198, China
| | - Hao Hong
- School of Medicine, Nanjing University, 22 Hankou Road, Nanjing, 210093, China.
| | - Yue Wang
- Key Laboratory of Biomedical Functional Materials, School of Sciences, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, 211198, China.
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18
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Arifin DR, Bulte JWM. In Vivo Imaging of Pancreatic Islet Grafts in Diabetes Treatment. Front Endocrinol (Lausanne) 2021; 12:640117. [PMID: 33737913 PMCID: PMC7961081 DOI: 10.3389/fendo.2021.640117] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 01/25/2021] [Indexed: 12/22/2022] Open
Abstract
Transplantation of pancreatic islets has potential to offer life-long blood glucose management in type I diabetes and severe type II diabetes without the need of exogenous insulin administration. However, islet cell therapy suffers from autoimmune and allogeneic rejection as well as non-immune related factors. Non-invasive techniques to monitor and evaluate the fate of cell implants in vivo are essential to understand the underlying causes of graft failure, and hence to improve the precision and efficacy of islet therapy. This review describes how imaging technology has been employed to interrogate the distribution, number or volume, viability, and function of islet implants in vivo. To date, fluorescence imaging, PET, SPECT, BLI, MRI, MPI, and ultrasonography are the many imaging modalities being developed to fulfill this endeavor. We outline here the advantages, limitations, and clinical utility of each particular imaging approach.
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Affiliation(s)
- Dian R. Arifin
- Department of Radiology and Radiological Sciences, School of Medicine, Johns Hopkins University, Baltimore, MD, United States
- Institute for Cell Engineering, School of Medicine, Johns Hopkins University, Baltimore, MD, United States
| | - Jeff W. M. Bulte
- Department of Radiology and Radiological Sciences, School of Medicine, Johns Hopkins University, Baltimore, MD, United States
- Institute for Cell Engineering, School of Medicine, Johns Hopkins University, Baltimore, MD, United States
- Department of Oncology, School of Medicine, Johns Hopkins University, Baltimore, MD, United States
- Department of Chemical and Biomolecular Engineering, Whiting School of Engineering, Johns Hopkins University, Baltimore, MD, United States
- Department of Biomedical Engineering, School of Medicine, Johns Hopkins University, Baltimore, MD, United States
- *Correspondence: Jeff W. M. Bulte,
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19
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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
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20
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Enck K, Tamburrini R, Deborah C, Gazia C, Jost A, Khalil F, Alwan A, Orlando G, Opara EC. Effect of alginate matrix engineered to mimic the pancreatic microenvironment on encapsulated islet function. Biotechnol Bioeng 2020; 118:1177-1185. [PMID: 33270214 DOI: 10.1002/bit.27641] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 11/15/2020] [Accepted: 11/21/2020] [Indexed: 12/13/2022]
Abstract
Islet transplantation is emerging as a therapeutic option for type 1 diabetes, albeit, only a small number of patients meeting very stringent criteria are eligible for the treatment because of the side effects of the necessary immunosuppressive therapy and the relatively short time frame of normoglycemia that most patients achieve. The challenge of the immune-suppressive regimen can be overcome through microencapsulation of the islets in a perm-selective coating of alginate microbeads with poly-l-lysine or poly- l-ornithine. In addition to other issues including the nutrient supply challenge of encapsulated islets a critical requirement for these cells has emerged as the need to engineer the microenvironment of the encapsulation matrix to mimic that of the native pancreatic scaffold that houses islet cells. That microenvironment includes biological and mechanical cues that support the viability and function of the cells. In this study, the alginate hydrogel was modified to mimic the pancreatic microenvironment by incorporation of extracellular matrix (ECM). Mechanical and biological changes in the encapsulating alginate matrix were made through stiffness modulation and incorporation of decellularized ECM, respectively. Islets were then encapsulated in this new biomimetic hydrogel and their insulin production was measured after 7 days in vitro. We found that manipulation of the alginate hydrogel matrix to simulate both physical and biological cues for the encapsulated islets enhances the mechanical strength of the encapsulated islet constructs as well as their function. Our data suggest that these modifications have the potential to improve the success rate of encapsulated islet transplantation.
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Affiliation(s)
- Kevin Enck
- Wake Forest School of Medicine, Virginia Tech School of Biomedical Engineering & Sciences (SBES), Wake Forest University, Winston-Salem, North Carolina.,Wake Forest School of Medicine, Wake Forest Institute for Regenerative Medicine (WFIRM), Winston-Salem, North Carolina
| | - Riccardo Tamburrini
- Wake Forest School of Medicine, Wake Forest Institute for Regenerative Medicine (WFIRM), Winston-Salem, North Carolina.,Department of Surgery, Wake Forest University, Winston-Salem, North Carolina
| | - Chaimov Deborah
- Wake Forest School of Medicine, Wake Forest Institute for Regenerative Medicine (WFIRM), Winston-Salem, North Carolina.,Department of Surgery, Wake Forest University, Winston-Salem, North Carolina
| | - Carlo Gazia
- Wake Forest School of Medicine, Wake Forest Institute for Regenerative Medicine (WFIRM), Winston-Salem, North Carolina.,Department of Surgery, Wake Forest University, Winston-Salem, North Carolina
| | - Alec Jost
- Wake Forest School of Medicine, Wake Forest University, Winston-Salem, North Carolina
| | - Fatma Khalil
- Wake Forest School of Medicine, Wake Forest Institute for Regenerative Medicine (WFIRM), Winston-Salem, North Carolina
| | - Abdelrahman Alwan
- Wake Forest School of Medicine, Wake Forest Institute for Regenerative Medicine (WFIRM), Winston-Salem, North Carolina
| | - Giuseppe Orlando
- Wake Forest School of Medicine, Wake Forest Institute for Regenerative Medicine (WFIRM), Winston-Salem, North Carolina.,Department of Surgery, Wake Forest University, Winston-Salem, North Carolina
| | - Emmanuel C Opara
- Wake Forest School of Medicine, Virginia Tech School of Biomedical Engineering & Sciences (SBES), Wake Forest University, Winston-Salem, North Carolina.,Wake Forest School of Medicine, Wake Forest Institute for Regenerative Medicine (WFIRM), Winston-Salem, North Carolina
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21
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Bilayer nicorandil-loaded small-diameter vascular grafts improve endothelial cell function via PI3K/AKT/eNOS pathway. Biodes Manuf 2020. [DOI: 10.1007/s42242-020-00107-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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22
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Nakayama-Iwatsuki K, Yamanaka T, Negishi J, Teshima J, Tamada Y, Hirabayashi M, Hochi S. Transplantation of rat pancreatic islets vitrified-warmed on the nylon mesh device and the silk fibroin sponge disc. Islets 2020; 12:145-155. [PMID: 33289599 PMCID: PMC7751673 DOI: 10.1080/19382014.2020.1849928] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
We report the adaptability of rat islets vitrified-warmed on nylon mesh (NM) device or silk fibroin (SF) sponge disc for the normalization of the blood glucose level in rat models of diabetes. One-hundred rat islets were cryopreserved according to a minimum volume cooling protocol on an NM device or a solid surface vitrification protocol on an SF sponge disc. The recovery rate (97.1% vs. 93.8%), the viability (77.9% vs. 74.4%), and the stimulation index (4.7 vs. 4.2) in glucose-stimulated insulin secretion (GSIS) assay of the post-warm islets were comparable between the NM vitrification and the SF vitrification groups. The viability and the stimulation index of the fresh control islets were identified to be 97.5% and 6.5, respectively. Eight hundred islets from the NM or the SF vitrification group or the fresh control group were transplanted beneath the kidney capsule of a streptozotocin-induced diabetic rat (blood glucose level > 350 mg/dl). Within 3 weeks after transplantation, the acquisition of euglycemia (< 200 mg/dl) was observed in recipient rats (80.0-83.3%). An intraperitoneal glucose tolerance test on Day-30 and Day-60 showed similar 2-h responses to the glucose uptake of cured rats among the compared groups. Moreover, the successful engraftment of transplants was confirmed by the Day-70 nephrectomy through the subsequent diabetes reversal and histological evaluation. Thus, large quantities of rat islets vitrified-warmed on an NM device or an SF sponge disc were proven to be fully functional both in vitro and in vivo, due to the GSIS and syngeneic transplantation, respectively.
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Affiliation(s)
- Kenyu Nakayama-Iwatsuki
- Graduate School of Science and Technology, Shinshu University, Ueda, Japan
- Center for Genetic Analysis of Behavior, National Institute for Physiological Sciences, Okazaki, Japan
| | - Takahiro Yamanaka
- Graduate School of Medicine, Science and Technology, Shinshu University, Ueda, Japan
| | - Jun Negishi
- Graduate School of Science and Technology, Shinshu University, Ueda, Japan
- Graduate School of Medicine, Science and Technology, Shinshu University, Ueda, Japan
- Faculty of Textile Science and Technology, Shinshu University, Ueda, Japan
| | - Junki Teshima
- Graduate School of Science and Technology, Shinshu University, Ueda, Japan
| | - Yasushi Tamada
- Graduate School of Science and Technology, Shinshu University, Ueda, Japan
- Graduate School of Medicine, Science and Technology, Shinshu University, Ueda, Japan
- Faculty of Textile Science and Technology, Shinshu University, Ueda, Japan
| | - Masumi Hirabayashi
- Center for Genetic Analysis of Behavior, National Institute for Physiological Sciences, Okazaki, Japan
- School of Life Science, The Graduate University for Advanced Studies, Okazaki, Japan
| | - Shinichi Hochi
- Graduate School of Science and Technology, Shinshu University, Ueda, Japan
- Graduate School of Medicine, Science and Technology, Shinshu University, Ueda, Japan
- Faculty of Textile Science and Technology, Shinshu University, Ueda, Japan
- CONTACT Shinichi Hochi Department of Applied Biology, Faculty of Textile Science and Technology, Shinshu University, Tokida 3-15-1, Ueda, Nagano386-8567, Japan
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23
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Clough DW, King JL, Li F, Shea LD. Integration of Islet/Beta-Cell Transplants with Host Tissue Using Biomaterial Platforms. Endocrinology 2020; 161:bqaa156. [PMID: 32894299 PMCID: PMC8253249 DOI: 10.1210/endocr/bqaa156] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 08/27/2020] [Indexed: 12/30/2022]
Abstract
Cell-based therapies are emerging for type I diabetes mellitus (T1D), an autoimmune disease characterized by the destruction of insulin-producing pancreatic β-cells, as a means to provide long-term restoration of glycemic control. Biomaterial scaffolds provide an opportunity to enhance the manufacturing and transplantation of islets or stem cell-derived β-cells. In contrast to encapsulation strategies that prevent host contact with the graft, recent approaches aim to integrate the transplant with the host to facilitate glucose sensing and insulin distribution, while also needing to modulate the immune response. Scaffolds can provide a supportive niche for cells either during the manufacturing process or following transplantation at extrahepatic sites. Scaffolds are being functionalized to deliver oxygen, angiogenic, anti-inflammatory, or trophic factors, and may facilitate cotransplantation of cells that can enhance engraftment or modulate immune responses. This local engineering of the transplant environment can complement systemic approaches for maximizing β-cell function or modulating immune responses leading to rejection. This review discusses the various scaffold platforms and design parameters that have been identified for the manufacture of human pluripotent stem cell-derived β-cells, and the transplantation of islets/β-cells to maintain normal blood glucose levels.
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Affiliation(s)
- Daniel W Clough
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan
| | - Jessica L King
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan
| | - Feiran Li
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan
| | - Lonnie D Shea
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan
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24
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Yao Q, Lan QH, Jiang X, Du CC, Zhai YY, Shen X, Xu HL, Xiao J, Kou L, Zhao YZ. Bioinspired biliverdin/silk fibroin hydrogel for antiglioma photothermal therapy and wound healing. Theranostics 2020; 10:11719-11736. [PMID: 33052243 PMCID: PMC7545989 DOI: 10.7150/thno.47682] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 09/13/2020] [Indexed: 12/11/2022] Open
Abstract
Rationale: Photothermal therapy employs the photoabsorbers to generate heat under the near-infrared (NIR) irradiation for thermal tumor ablation. However, NIR irradiation might damage the adjacent tissue due to the leakage of the photoabsorbers and the residual materials after treatment might hinder the local healing process. A bifunctional hydrogel that holds both photothermal property and potent pro-healing ability provides a viable option to resolve this issue. Methods: In this study, we developed a bioinspired green hydrogel (BVSF) with the integration of bioproduct biliverdin into natural derived silk fibroin matrix for antiglioma photothermal therapy and wound healing. Results: The BVSF hydrogel possessed excellent and controllable photothermal activity under NIR irradiation and resulted in effective tumor ablation both in vitro and in vivo. Additionally, the BVSF hydrogel exerted anti-inflammatory effects both in vitro and in vivo, and stimulated angiogenesis and wound healing in a full-thickness defect rat model. Conclusion: Overall, this proof-of-concept study was aimed to determine the feasibility and reliability of using an all-natural green formulation for photothermal therapy and post-treatment care.
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25
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Zhu Y, Wang D, Yao X, Wang M, Zhao Y, Lu Y, Wang Z, Guo Y. Biomimetic hybrid scaffold of electrospun silk fibroin and pancreatic decellularized extracellular matrix for islet survival. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2020; 32:151-165. [PMID: 32867627 DOI: 10.1080/09205063.2020.1818018] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Islet transplantation is considered as one of the promising treatment options for curing diabetes. However, the extracellular matrix (ECM) is destroyed during the process of islet isolation and extraction, which leads to decreased islet activity in vitro. ECM-based biomaterials which used to reconstruct the microenvironment of cells have been applied in various fields. In this study, an electrospinning hybrid scaffolds with silk fibroin (SF) and pig pancreatic decellularized extracellular matrix (P-dECM) have been prepared to mimic the islet ECM in vivo. Furthermore, the activity and function of islet were evaluated in vitro. The microstructures, hydrophilia and the main components of scaffolds were characterized by SEM, contact angle analysis and immunohistochemical experiment. The toxicity of stents was assessed by MTT assay. Cell activity and function were estimated by the live-dead cell staining, immunofluorescence, glucose-stimulated insulin secretion assay and q-PCR. A nanofiber scaffold with good hydrophilicity, non-toxic and retention of key ECM components has been obtained, which can improve the survival and promote and function of islets. This scaffold can be a promising candidate for pancreatic tissue engineering and provides a new strategy for islet transplantation.
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Affiliation(s)
- Yi Zhu
- Department of General Surgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu, P.R China.,Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong, Jiangsu, P.R China
| | - Dongzhi Wang
- Department of General Surgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu, P.R China.,Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong, Jiangsu, P.R China
| | - Xihao Yao
- Department of General Surgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu, P.R China.,Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong, Jiangsu, P.R China
| | - Mingming Wang
- Medical School of Nantong University, Nantong, Jiangsu, P.R China
| | - Yahong Zhao
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - Yuhua Lu
- Department of General Surgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu, P.R China
| | - Zhiwei Wang
- Department of General Surgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu, P.R China
| | - Yibing Guo
- Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong, Jiangsu, P.R China
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26
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White Adipose Tissue as a Site for Islet Transplantation. TRANSPLANTOLOGY 2020. [DOI: 10.3390/transplantology1010006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Although islet transplantation is recognized as a useful cellular replacement therapy for severe diabetes, surgeons face difficulties in islet engraftment. The transplant site is a pivotal factor that influences the engraftment. Although the liver is the current representative site for clinical islet transplantation, it is not the best site because of limitations in immunity, inflammation, and hypoxia. White adipose tissue, including omentum, is recognized as a useful candidate site for islet transplantation. Its effectiveness has been evaluated in not only various basic and translational studies using small and large animals but also in some recent clinical trials. In this review, we attempt to shed light on the characteristics and usefulness of white adipose tissue as a transplant site for islets.
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27
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White Adipose Tissue as a Site for Islet Transplantation. TRANSPLANTOLOGY 2020. [DOI: 10.3390/transplantology1020006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Although islet transplantation is recognized as a useful cellular replacement therapy for severe diabetes, surgeons face difficulties in islet engraftment. The transplant site is a pivotal factor that influences the engraftment. Although the liver is the current representative site for clinical islet transplantation, it is not the best site because of limitations in immunity, inflammation, and hypoxia. White adipose tissue, including omentum, is recognized as a useful candidate site for islet transplantation. Its effectiveness has been evaluated in not only various basic and translational studies using small and large animals but also in some recent clinical trials. In this review, we attempt to shed light on the characteristics and usefulness of white adipose tissue as a transplant site for islets.
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28
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Liu M, Feng D, Liang X, Li M, Yang J, Wang H, Pang L, Zhou Z, Yang Z, Kong D, Li C. Old Dog New Tricks: PLGA Microparticles as an Adjuvant for Insulin Peptide Fragment-Induced Immune Tolerance against Type 1 Diabetes. Mol Pharm 2020; 17:3513-3525. [PMID: 32787283 DOI: 10.1021/acs.molpharmaceut.0c00525] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Poly[lactic-co-(glycolic acid)] (PLGA) is arguably one of the most versatile synthetic copolymers used for biomedical applications. In vivo delivery of multiple substances including cells, pharmaceutical compounds, and antigens has been achieved by using PLGA-based micro-/nanoparticles although, presently, the exact biological impact of PLGA particles on the immune system remains controversial. Type 1 diabetes (T1D) is one subtype of diabetes characterized by the attack of immune cells against self-insulin-producing pancreatic islet cells. Considering the autoimmune etiology of T1D and the recent use of PLGA particles for eliciting desired immune responses in various aspects of immunotherapy, for the present study, a combination of Ins29-23 peptide (a known autoantigen of T1D) and PLGA microparticles was selected for T1D prevention assessment in nonobese diabetic (NOD) mice, a well-known animal model with spontaneous development of T1D. Thus, inoculation of PLGA microparticles + Ins29-23 completely prevented T1D development, significantly better than untreated controls and mice treated by either PLGA microparticles or Ins29-23 per se. Subsequent mechanistic investigation further revealed a facilitative role of PLGA microparticles in immune tolerance induction. In summary, our data demonstrate an adjuvant potential of PLGA microparticles in tolerance induction and immune remodulation for effective prevention of autoimmune diseases such as T1D.
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Affiliation(s)
- Mohan Liu
- Tianjin Key Laboratory of Biomedical Materials, Biomedical Barriers Research Centre, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
| | - Dandan Feng
- Tianjin Key Laboratory of Biomedical Materials, Biomedical Barriers Research Centre, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
| | - Xiaoyu Liang
- Tianjin Key Laboratory of Biomedical Materials, Biomedical Barriers Research Centre, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
| | - Min Li
- Tianjin Key Laboratory of Biomedical Materials, Biomedical Barriers Research Centre, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
| | - Jing Yang
- Tianjin Key Laboratory of Biomedical Materials, Biomedical Barriers Research Centre, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
| | - Hai Wang
- Tianjin Key Laboratory of Biomedical Materials, Biomedical Barriers Research Centre, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
| | - Liyun Pang
- Tianjin Key Laboratory of Biomedical Materials, Biomedical Barriers Research Centre, 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 Centre, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
| | - Zhimou Yang
- 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
| | - 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 Centre, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
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29
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Tandon S, Kandasubramanian B, Ibrahim SM. Silk-Based Composite Scaffolds for Tissue Engineering Applications. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c02195] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Saloni Tandon
- Biotechnology Lab, Center for Converging Technologies, University of Rajasthan, JLN Marg, Jaipur-302004, Rajasthan, India
| | - Balasubramanian Kandasubramanian
- Nano Surface Texturing Lab, Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology (DU), Girinagar, Pune-411025, Maharashtra, India
| | - Sobhy M. Ibrahim
- Department of Biochemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
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30
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Kasoju N, Pátíková A, Wawrzynska E, Vojtíšková A, Sedlačík T, Kumorek M, Pop-Georgievski O, Sticová E, KříŽ J, Kubies D. Bioengineering a pre-vascularized pouch for subsequent islet transplantation using VEGF-loaded polylactide capsules. Biomater Sci 2020; 8:631-647. [PMID: 31729495 DOI: 10.1039/c9bm01280j] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The effectiveness of cell transplantation can be improved by optimization of the transplantation site. For some types of cells that form highly oxygen-demanding tissue, e.g., pancreatic islets, a successful engraftment depends on immediate and sufficient blood supply. This critical point can be avoided when cells are transplanted into a bioengineered pre-vascularized cavity which can be formed using a polymer scaffold. In our study, we tested surface-modified poly(lactide-co-caprolactone) (PLCL) capsular scaffolds containing the pro-angiogenic factor VEGF. After each modification step (i.e., amination and heparinization), the surface properties and morphology of scaffolds were characterized by ATR-FTIR and XPS spectroscopy, and by SEM and AFM. All modifications preserved the gross capsule morphology and maintained the open pore structure. Optimized aminolysis conditions decreased the Mw of PLCL only up to 10% while generating a sufficient number of NH2 groups required for the covalent immobilization of heparin. The heparin layer served as a VEGF reservoir with an in vitro VEGF release for at least four weeks. In vivo studies revealed that to obtain highly vascularized PLCL capsules (a) the optimal VEGF dose for the capsule was 50 μg and (b) the implantation time was four weeks when implanted into the greater omentum of Lewis rats; dense fibrous tissue accompanied by vessels completely infiltrated the scaffold and created sparse granulation tissue within the internal cavity of the capsule. The prepared pre-vascularized pouch enabled the islet graft survival and functioning for at least 50 days after islet transplantation. The proposed construct can be used to create a reliable pre-vascularized pouch for cell transplantation.
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Affiliation(s)
- Naresh Kasoju
- Institute of Macromolecular Chemistry Czech Academy of Sciences, Heyrovsky sq.2, Prague 162 06, Czech Republic.
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31
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Cao X, Duan L, Hou H, Liu Y, Chen S, Zhang S, Liu Y, Wang C, Qi X, Liu N, Han Z, Zhang D, Han ZC, Guo Z, Zhao Q, Li Z. IGF-1C hydrogel improves the therapeutic effects of MSCs on colitis in mice through PGE 2-mediated M2 macrophage polarization. Am J Cancer Res 2020; 10:7697-7709. [PMID: 32685014 PMCID: PMC7359093 DOI: 10.7150/thno.45434] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 06/07/2020] [Indexed: 12/13/2022] Open
Abstract
Background: Mesenchymal stem cell (MSC)-based therapies hold great promise for the treatment of inflammatory bowel disease (IBD). In order to optimize and maximize the therapeutic benefits of MSCs, we investigated whether cotransplantation of a chitosan (CS)-based injectable hydrogel with immobilized IGF-1 C domain peptide (CS-IGF-1C) and human placenta-derived MSCs (hP-MSCs) could ameliorate colitis in mice. Methods: IGF-1C hydrogel was generated by immobilizing IGF-1C to CS hydrogel. Colitis was induced by 2,4,6-trinitrobenzene sulfonic acid (TNBS) in mice. We initially applied hP-MSCs and CS-IGF-1C hydrogel for the treatment of colitis by in situ injection, and molecular imaging methods were used for real-time imaging of reactive oxygen species (ROS) and tracking of transplanted hP-MSCs by bioluminescence imaging (BLI). Furthermore, the effects of CS-IGF-1C hydrogel on prostaglandin E2 (PGE2) secretion of hP-MSCs and polarization of M2 macrophages were investigated as well. Results: The CS-IGF-1C hydrogel significantly increased hP-MSC proliferation and promoted the production of PGE2 from hP-MSCs in vitro. Moreover, in vivo studies indicated that the CS-IGF-1C hydrogel promoted hP-MSC survival as visualized by BLI and markedly alleviated mouse colitis, which was possibly mediated by hP-MSC production of PGE2 and interleukin-10 (IL-10) production by polarized M2 macrophages. Conclusions: The CS-IGF-1C hydrogel improved the engraftment of transplanted hP-MSCs, ameliorated inflammatory responses, and further promoted the functional and structural recovery of colitis through PGE2-mediated M2 macrophage polarization. Molecular imaging approaches and therapeutic strategies for hydrogel application provide a versatile platform for exploring the promising therapeutic potential of MSCs in the treatment of IBD.
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32
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Wang Z, Liu C, Zhu D, Gu X, Xu Y, Qin Q, Dong N, Zhang S, Wang J. Untangling the co-effects of oriented nanotopography and sustained anticoagulation in a biomimetic intima on neovessel remodeling. Biomaterials 2020; 231:119654. [DOI: 10.1016/j.biomaterials.2019.119654] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 11/25/2019] [Accepted: 11/26/2019] [Indexed: 12/31/2022]
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33
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Zhu Q, Lu C, Jiang X, Yao Q, Jiang X, Huang Z, Jiang Y, Peng L, Fu H, Zhao Y. Using Recombinant Human Collagen With Basic Fibroblast Growth Factor to Provide a Simulated Extracellular Matrix Microenvironment for the Revascularization and Attachment of Islets to the Transplantation Region. Front Pharmacol 2020; 10:1536. [PMID: 31998133 PMCID: PMC6965329 DOI: 10.3389/fphar.2019.01536] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 11/27/2019] [Indexed: 12/19/2022] Open
Abstract
Islet transplantation is considered a potential therapeutic option to reverse diabetes. The pancreatic basement membrane contains a variety of extracellular matrix (ECM) proteins. The abundant ECM is essential for the survival of transplanted islets. However, the ECM proteins necessary for maintaining islet vascularization and innervation are impaired by enzymatic digestion in the isolation process before islet transplantation, leading to destruction of islet microvessels. These are the primary concern and major barrier for long-term islet survival and function. Thus, it is crucial to create an appropriate microenvironment for improving revascularization and islet function to achieve better transplantation outcome. Given the importance of the presence of ECM proteins for islets, we introduce recombinant human collagen (RHC) to construct a simulated ECM microenvironment. To accelerate revascularization and reduce islet injury, we add basic fibroblast growth factor (bFGF) to RHC, a growth factor that has been shown to promote angiogenesis. In order to verify the outcome, islets were treated with RHC combination containing bFGF and then implanted into kidney capsule in type 1 diabetic mouse models. After transplantation, 30-day-long monitoring displayed that 16 mg–60 ng RHC-bFGF group could serve as superior transplantation outcome. It reversed the hyperglycemia condition in host rapidly, and the OGTT (oral glucose tolerance test) showed a similar pattern with the control group. Histological assessment showed that 16 mg–60 ng RHC-bFGF group attenuated apoptosis, promoted cellular proliferation, triggered vascularization, and inhibited inflammation reaction. In summary, this work demonstrates that application of 16 mg–60 ng RHC-bFGF and islets composite enhance the islet survival, function, and long-term transplantation efficiency.
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Affiliation(s)
- Qunyan Zhu
- College of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China.,Engineering Laboratory of Zhejiang Province for Pharmaceutical Development of Growth Factors, Biomedical Collaborative Innovation Center of Wenzhou, Wenzhou, China.,Trauma Center, The First Affiliated Hospital of Hainan Medical College, Haikou, China
| | - Cuitao Lu
- College of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Xuan Jiang
- College of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Qing Yao
- College of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Xue Jiang
- College of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Zhiwei Huang
- College of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Yina Jiang
- College of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Lei Peng
- College of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Hongxing Fu
- College of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Yingzheng Zhao
- College of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China.,Engineering Laboratory of Zhejiang Province for Pharmaceutical Development of Growth Factors, Biomedical Collaborative Innovation Center of Wenzhou, Wenzhou, China.,Trauma Center, The First Affiliated Hospital of Hainan Medical College, Haikou, China
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34
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White AM, Shamul JG, Xu J, Stewart S, Bromberg JS, He X. Engineering Strategies to Improve Islet Transplantation for Type 1 Diabetes Therapy. ACS Biomater Sci Eng 2019; 6:2543-2562. [PMID: 33299929 DOI: 10.1021/acsbiomaterials.9b01406] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Type 1 diabetes is an autoimmune disease in which the immune system attacks insulin-producing beta cells of pancreatic islets. Type 1 diabetes can be treated with islet transplantation; however, patients must be administered immunosuppressants to prevent immune rejection of the transplanted islets if they are not autologous or not engineered with immune protection/isolation. To overcome biological barriers of islet transplantation, encapsulation strategies have been developed and robustly investigated. While islet encapsulation can prevent the need for immunosuppressants, these approaches have not shown much success in clinical trials due to a lack of long-term insulin production. Multiple engineering strategies have been used to improve encapsulation and post-transplantation islet survival. In addition, more efficient islet cryopreservation methods have been designed to facilitate the scaling-up of islet transplantation. Other islet sources have been identified including porcine islets and stem cell-derived islet-like aggregates. Overall, islet-laden capsule transplantation has greatly improved over the past 30 years and is moving towards becoming a clinically feasible treatment for type 1 diabetes.
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Affiliation(s)
- Alisa M White
- Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742, USA
| | - James G Shamul
- Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742, USA
| | - Jiangsheng Xu
- Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742, USA
| | - Samantha Stewart
- Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742, USA
| | - Jonathan S Bromberg
- Department of Surgery, University of Maryland School of Medicine, Baltimore, MD 21201.,Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD 21201.,Center for Vascular and Inflammatory Diseases, University of Maryland School of Medicine, Baltimore, MD 21201.,Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland, Baltimore, MD 21201
| | - Xiaoming He
- Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742, USA.,Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland, Baltimore, MD 21201.,Robert E. Fischell Institute for Biomedical Devices, University of Maryland, College Park, MD 20742, USA, Baltimore, MD 21201, USA
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35
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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.
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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.
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Wang Y, Yu H, Zhang D, Wang G, Song W, Liu Y, Ma S, Tang Z, Liu Z, Sakurai K, Chen X. Co-administration of combretastatin A4 nanoparticles and sorafenib for systemic therapy of hepatocellular carcinoma. Acta Biomater 2019; 92:229-240. [PMID: 31100462 DOI: 10.1016/j.actbio.2019.05.028] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 05/07/2019] [Accepted: 05/09/2019] [Indexed: 12/26/2022]
Abstract
Effective systemic therapy is highly desired for the treatment of hepatocellular carcinoma (HCC). In this study, a combination of nanoparticles of poly(L-glutamic acid)-graft-methoxy poly(ethylene glycol)/combretastatin A4 sodium salt (CA4-NPs) plus sorafenib is developed for the cooperative systemic treatment of HCC. The CA4-NPs leads to the disruption of established tumor blood vessels and extensive tumor necrosis, however, inducing increased expression of VEGF-A and angiogenesis. Sorafenib reduces the VEGF-A induced angiogenesis and further inhibits tumor proliferation, cooperating with the CA4-NPs. A significant decrease in tumor volume and prolonged survival time are observed in the combination group of CA4-NPs plus sorafenib compared with CA4-NPs or sorafenib monotherapy in subcutaneous and orthotopic H22 hepatic tumor models. Seventy-one percent of the mice are alive without residual tumor at 96 days post tumor inoculation for the subcutaneous models treated with CA4-NPs 30 or 35 mg·kg-1 plus sorafenib 30 mg·kg-1. Our findings suggest that co-administration of sorafenib and CA4-NPs possesses significant antitumor efficacy for HCC treatment. STATEMENT OF SIGNIFICANCE: Effective systemic therapy is highly desired for the treatment of hepatocellular carcinoma (HCC). Herein, we demonstrate that a combination of nanoparticles of poly(L-glutamic acid)-graft-methoxy poly(ethylene glycol)/combretastatin A4 sodium salt (CA4-NPs) plus sorafenib is a promising synergistic approach for systemic treatment of HCC. The CA4-NPs leads to the disruption of established tumor blood vessels and extensive tumor necrosis, however, inducing increased expression of VEGF-A and angiogenesis. Sorafenib reduces the VEGF-A induced angiogenesis and further inhibits tumor proliferation, cooperating with the CA4-NPs.
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Affiliation(s)
- Yalin Wang
- Cancer Center, the First Hospital of Jilin University, Changchun 130021, China; Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Haiyang Yu
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China; Jilin Biomedical Polymers Engineering Laboratory, Changchun 130022, China
| | - Dawei Zhang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Guanyi Wang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Wantong Song
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China; Jilin Biomedical Polymers Engineering Laboratory, Changchun 130022, China
| | - Yingmin Liu
- Cancer Center, the First Hospital of Jilin University, Changchun 130021, China
| | - Sheng Ma
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China; Jilin Biomedical Polymers Engineering Laboratory, Changchun 130022, China
| | - Zhaohui Tang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China; Jilin Biomedical Polymers Engineering Laboratory, Changchun 130022, China.
| | - Ziling Liu
- Cancer Center, the First Hospital of Jilin University, Changchun 130021, China.
| | - Kazuo Sakurai
- The University of Kitakyushu, Department of Chemistry and Biochemistry, 1-1, Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0135, Japan
| | - Xuesi Chen
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China; Jilin Biomedical Polymers Engineering Laboratory, Changchun 130022, China
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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.
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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
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Wang P, Wu W, Gao R, Zhu H, Wang J, Du R, Li X, Zhang C, Cao S, Xiang R. Engineered Cell-Assisted Photoactive Nanoparticle Delivery for Image-Guided Synergistic Photodynamic/Photothermal Therapy of Cancer. ACS APPLIED MATERIALS & INTERFACES 2019; 11:13935-13944. [PMID: 30915833 DOI: 10.1021/acsami.9b00022] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Photoactivated therapy, including photodynamic therapy (PDT) and photothermal therapy (PTT), is a spatiotemporally precise, controllable, and noninvasive method for tumor therapy and has therefore attracted increasing attention in recent years. However, it is still a challenge to obtain highly efficient therapeutic photoactive agents (PAAs) and deliver them into tumor, especially the core of solid tumors. Here, we have developed a newly engineered monocyte (MNC)-based PAA system that realizes precise and highly efficient tumor diagnosis and therapy. First, a near-infrared emissive PAA molecule with both strong singlet oxygen (1O2) production and high photothermal conversion efficiency was precisely designed for realizing simultaneous PDT and PTT of tumor and was further fabricated to form PAA nanoparticles (NPs). After loading the PAA NPs into MNCs, the MNCs were then decorated with cyclic Arg-Gly-Asp (cRGD) groups through a metabolic labeling method to further improve their ability of targeting and homing into the deep regions of tumors. Using this strategy, we have achieved highly efficient solid tumor ablation results both in vitro and in vivo, indicating that our strategy has a promising prospect for solid tumor therapy.
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Affiliation(s)
- Peng Wang
- Department of Immunology, Medical School of Nankai University , Nankai University , Tianjin 300071 , China
| | - Wenbo Wu
- Department of Chemical and Biomolecular Engineering , National University of Singapore , Singapore 117585
| | - Ruifang Gao
- Department of Immunology, Medical School of Nankai University , Nankai University , Tianjin 300071 , China
| | - Han Zhu
- Key Laboratory of Synthetic and Biological Colloids Ministry of Education School of Chemical and Material Engineering , Jiangnan University , Wuxi 214122 , China
| | - Juan Wang
- Department of Immunology, Medical School of Nankai University , Nankai University , Tianjin 300071 , China
| | - Renle Du
- Department of Immunology, Medical School of Nankai University , Nankai University , Tianjin 300071 , China
| | - Xiaoyu Li
- Department of Immunology, Medical School of Nankai University , Nankai University , Tianjin 300071 , China
| | - Chenglan Zhang
- Department of Immunology, Medical School of Nankai University , Nankai University , Tianjin 300071 , China
| | - Shaokui Cao
- School of Materials Science and Engineering , Zhengzhou University , Zhengzhou 450001 , China
| | - Rong Xiang
- Department of Immunology, Medical School of Nankai University , Nankai University , Tianjin 300071 , China
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40
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Shang Y, Zhi D, Feng G, Wang Z, Mao D, Guo S, Liu R, Liu L, Zhang S, Sun S, Wang K, Kong D, Gao J, Yang Z. Supramolecular Nanofibers with Superior Bioactivity to Insulin-Like Growth Factor-I. NANO LETTERS 2019; 19:1560-1569. [PMID: 30789273 DOI: 10.1021/acs.nanolett.8b04406] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Bioactive peptides derived from proteins generally need to be folded into secondary structures to activate downstream signaling pathways. However, synthetic peptides typically form random-coils, thus losing their bioactivities. Here, we show that by introducing a self-assembling peptide motif and using different preparation pathways, a peptide from insulin-like growth factor-I (IGF-1) can be folded into an α-helix and β-sheet. The β-sheet one exhibits a low dissociation constant to the IGF-1 receptor (IGF-1R, 11.5 nM), which is only about 3 times higher than that of IGF-1 (4.3 nM). However, the α-helical one and the peptide without self-assembling motif show weak affinities to IGF-1R ( KD = 179.1 and 321.6 nM, respectively). At 10 nM, the β-sheet one efficiently activates the IGF-1 downstream pathway, significantly enhancing HUVEC proliferation and preventing cell apoptosis. The β-sheet peptide shows superior performance to IGF-1 in vivo, and it improves ischemic hind-limb salvage by significantly reducing muscle degradation and enhancing limb vascularization. Our study provides a useful strategy to constrain peptides into different conformations, which may lead to the development of supramolecular nanomaterials mimicking biofunctional proteins.
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Affiliation(s)
- Yuna Shang
- Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, State Key Laboratory of Medicinal Chemical Biology, Collaborative Innovation Center of Chemical Science and Engineering, and National Institute of Functional Materials , Nankai University , Tianjin 300071 , P. R. China
| | - Dengke Zhi
- Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, State Key Laboratory of Medicinal Chemical Biology, Collaborative Innovation Center of Chemical Science and Engineering, and National Institute of Functional Materials , Nankai University , Tianjin 300071 , P. R. China
| | - Guowei Feng
- Department of Genitourinary Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin Key Laboratory of Cancer Prevention and Therapy , Tianjin's Clinical Research Center for Cancer , Tianjin 300060 , P. R. China
| | - Zhongyan Wang
- Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, State Key Laboratory of Medicinal Chemical Biology, Collaborative Innovation Center of Chemical Science and Engineering, and National Institute of Functional Materials , Nankai University , Tianjin 300071 , P. R. China
| | - Duo Mao
- Department of Chemical and Biomolecular Engineering , National University of Singapore , Engineering Drive 4 , Singapore , 117585
| | - Shuang Guo
- Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, State Key Laboratory of Medicinal Chemical Biology, Collaborative Innovation Center of Chemical Science and Engineering, and National Institute of Functional Materials , Nankai University , Tianjin 300071 , P. R. China
| | - Ruihua Liu
- Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, State Key Laboratory of Medicinal Chemical Biology, Collaborative Innovation Center of Chemical Science and Engineering, and National Institute of Functional Materials , Nankai University , Tianjin 300071 , P. R. China
| | - Lulu Liu
- Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, State Key Laboratory of Medicinal Chemical Biology, Collaborative Innovation Center of Chemical Science and Engineering, and National Institute of Functional Materials , Nankai University , Tianjin 300071 , P. R. China
| | - Shuhao Zhang
- Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, State Key Laboratory of Medicinal Chemical Biology, Collaborative Innovation Center of Chemical Science and Engineering, and National Institute of Functional Materials , Nankai University , Tianjin 300071 , P. R. China
| | - Shenghuan Sun
- Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, State Key Laboratory of Medicinal Chemical Biology, Collaborative Innovation Center of Chemical Science and Engineering, and National Institute of Functional Materials , Nankai University , Tianjin 300071 , P. R. China
| | - Kai Wang
- Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, State Key Laboratory of Medicinal Chemical Biology, Collaborative Innovation Center of Chemical Science and Engineering, and National Institute of Functional Materials , Nankai University , Tianjin 300071 , P. R. China
| | - Deling Kong
- Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, State Key Laboratory of Medicinal Chemical Biology, Collaborative Innovation Center of Chemical Science and Engineering, and National Institute of Functional Materials , Nankai University , Tianjin 300071 , P. R. China
| | - Jie Gao
- Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, State Key Laboratory of Medicinal Chemical Biology, Collaborative Innovation Center of Chemical Science and Engineering, and National Institute of Functional Materials , Nankai University , Tianjin 300071 , P. R. China
| | - Zhimou Yang
- Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, State Key Laboratory of Medicinal Chemical Biology, Collaborative Innovation Center of Chemical Science and Engineering, and National Institute of Functional Materials , Nankai University , Tianjin 300071 , P. R. China
- Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Cancer Institute , Xuzhou Medical University , Xuzhou , Jiangsu P. R. China
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Xu L, Guo Y, Huang Y, Xu Y, Lu Y, Wang Z. Hydrogel materials for the application of islet transplantation. J Biomater Appl 2019; 33:1252-1264. [PMID: 30791850 DOI: 10.1177/0885328219831391] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Type 1 diabetes mellitus is a serious disease comprising approximately 10% of all diabetes cases, and the global incidence of type 1 diabetes mellitus is steadily rising without any promise of a cure in the near future. Although islet transplantation has proven to be an effective means of treating type 1 diabetes mellitus and promoting insulin independence in patients, its widespread implementation has been severely constrained by instances of post-transplantation islet cell death, rejection, and severe adverse immune responses. Islet encapsulation is an active area of research aimed at shielding implanted islets from immunological rejection and inflammation while still allowing for effective insulin and nutrient exchange with donor cells. Given their promising physical and chemical properties, hydrogels have been a major subject of focus in the field of islet transplantation and encapsulation technology, offering promising advances towards immunologically privileged islet implants. The present review therefore summarizes the current state of research regarding the use of hydrogels in the context of islet transplantation, including both natural molecular hydrogels and artificial polymer hydrogels, with the goal of understanding the current strengths and weaknesses of this treatment strategy.
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Affiliation(s)
- Liancheng Xu
- Suqian First Hospital, Suqian, Jiangsu, China
- Department of General Surgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu, China
| | - Yibing Guo
- Research center of clinical medicine, Affiliated Hospital of Nantong University, Nantong, Jiangsu, China
| | - Yan Huang
- Department of General Surgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu, China
- Research center of clinical medicine, Affiliated Hospital of Nantong University, Nantong, Jiangsu, China
| | - Yang Xu
- Research center of clinical medicine, Affiliated Hospital of Nantong University, Nantong, Jiangsu, China
| | - Yuhua Lu
- Department of General Surgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu, China
- Research center of clinical medicine, Affiliated Hospital of Nantong University, Nantong, Jiangsu, China
| | - Zhiwei Wang
- Department of General Surgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu, China
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Yang J, Jiang S, Guan Y, Deng J, Lou S, Feng D, Kong D, Li C. Pancreatic islet surface engineering with a starPEG-chondroitin sulfate nanocoating. Biomater Sci 2019; 7:2308-2316. [DOI: 10.1039/c9bm00061e] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Islet transplantation is one of the most promising therapeutic options that could restore euglycaemia in type 1 diabetic individuals.
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Affiliation(s)
- Jingyi Yang
- Tianjin Key Laboratory of Biomaterial Research
- Institute of Biomedical Engineering
- Chinese Academy of Medical Science & Peking Union Medical College
- Tianjin 300192
- China
| | - Shan Jiang
- Department of Ultrasound
- Tianjin Central Hospital of Gynecology Obstetrics
- Tianjin 300199
- China
| | - Yong Guan
- Department of Pediatric Urology
- Tianjin Children's Hospital
- Tianjin 300134
- China
| | - Juan Deng
- Tianjin Key Laboratory of Biomaterial Research
- Institute of Biomedical Engineering
- Chinese Academy of Medical Science & Peking Union Medical College
- Tianjin 300192
- China
| | - Shaofeng Lou
- Department of Basic Science
- Army Military Transportation University
- Tianjin 300161
- China
| | - Dandan Feng
- Tianjin Key Laboratory of Biomaterial Research
- Institute of Biomedical Engineering
- Chinese Academy of Medical Science & Peking Union Medical College
- Tianjin 300192
- China
| | - Deling Kong
- Key Laboratory of Bioactive Materials of Ministry of Education
- State Key Laboratory of Medicinal Chemical Biology
- College of Life Sciences
- Nankai University
- Tianjin 300071
| | - Chen Li
- Tianjin Key Laboratory of Biomaterial Research
- Institute of Biomedical Engineering
- Chinese Academy of Medical Science & Peking Union Medical College
- Tianjin 300192
- China
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Navarro-Tableros V, Gomez Y, Brizzi MF, Camussi G. Generation of Human Stem Cell-Derived Pancreatic Organoids (POs) for Regenerative Medicine. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1212:179-220. [PMID: 31025308 DOI: 10.1007/5584_2019_340] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Insulin-dependent diabetes mellitus or type 1 diabetes mellitus (T1DM) is an auto-immune condition characterized by the loss of pancreatic β-cells. The curative approach for highly selected patients is the pancreas or the pancreatic islet transplantation. Nevertheless, these options are limited by a growing shortage of donor organs and by the requirement of immunosuppression.Xenotransplantation of porcine islets has been extensively investigated. Nevertheless, the strong xenoimmunity and the risk of transmission of porcine endogenous retroviruses, have limited their application in clinic. Generation of β-like cells from stem cells is one of the most promising strategies in regenerative medicine. Embryonic, and more recently, adult stem cells are currently the most promising cell sources exploited to generate functional β-cells in vitro. A number of studies demonstrated that stem cells could generate functional pancreatic organoids (POs), able to restore normoglycemia when implanted in different preclinical diabetic models. Nevertheless, a gradual loss of function and cell dead are commonly detected when POs are transplanted in immunocompetent animals. So far, the main issue to be solved is the post-transplanted islet loss, due to the host immune attack. To avoid this hurdle, nanotechnology has provided a number of polymers currently under investigation for islet micro and macro-encapsulation. These new approaches, besides conferring PO immune protection, are able to supply oxygen and nutrients and to preserve PO morphology and long-term viability.Herein, we summarize the current knowledge on bioengineered POs and the stem cell differentiation platforms. We also discuss the in vitro strategies used to generate functional POs, and the protocols currently used to confer immune-protection against the host immune attack (micro- and macro-encapsulation). In addition, the most relevant ongoing clinical trials, and the most relevant hurdles met to move towards clinical application are revised.
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Affiliation(s)
- Victor Navarro-Tableros
- 2i3T Società per la gestione dell'incubatore di imprese e per il trasferimento tecnologico Scarl, University of Turin, Turin, Italy
| | - Yonathan Gomez
- Department of Medical Sciences, University of Turin, Turin, Italy
| | | | - Giovanni Camussi
- Department of Medical Sciences, University of Turin, Turin, Italy.
- Fondazione per la Ricerca Biomedica-ONLUS, Turin, Italy.
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3D-Models of Insulin-Producing β-Cells: from Primary Islet Cells to Stem Cell-Derived Islets. Stem Cell Rev Rep 2018; 14:177-188. [PMID: 29181780 DOI: 10.1007/s12015-017-9783-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
There is a need for physiologically relevant assay platforms to provide functionally relevant models of diabetes, to accelerate the discovery of new treatment options and boost developments in drug discovery. In this review, we compare several 3D-strategies that have been used to increase the functional relevance of ex vivo human primary pancreatic islets and developments into the generation of stem cell derived pancreatic beta-cells (β-cells). Special attention will be given to recent approaches combining the use of extracellular matrix (ECM) scaffolds with pancreatic molecular memory, which can be used to improve yield and functionality of in vitro stem cell-derived pancreatic models. The ultimate goal is to develop scalable cell-based platforms for diabetes research and drug screening. This article will critically assess key aspects related to in vitro pancreatic 3D-ECM models and highlight the most promising approaches for future research.
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45
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Kumar M, Gupta P, Bhattacharjee S, Nandi SK, Mandal BB. Immunomodulatory injectable silk hydrogels maintaining functional islets and promoting anti-inflammatory M2 macrophage polarization. Biomaterials 2018; 187:1-17. [DOI: 10.1016/j.biomaterials.2018.09.037] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 08/28/2018] [Accepted: 09/23/2018] [Indexed: 02/08/2023]
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Zhang S, Liu Y, Zhang X, Zhu D, Qi X, Cao X, Fang Y, Che Y, Han ZC, He ZX, Han Z, Li Z. Prostaglandin E 2 hydrogel improves cutaneous wound healing via M2 macrophages polarization. Am J Cancer Res 2018; 8:5348-5361. [PMID: 30555551 PMCID: PMC6276096 DOI: 10.7150/thno.27385] [Citation(s) in RCA: 120] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 09/28/2018] [Indexed: 12/16/2022] Open
Abstract
Wound healing is regulated by a complex series of events and overlapping phases. A delicate balance of cytokines and mediators in tissue repair is required for optimal therapy in clinical applications. Molecular imaging technologies, with their versatility in monitoring cellular and molecular events in living organisms, offer tangible options to better guide tissue repair by regulating the balance of cytokines and mediators at injured sites. Methods: A murine cutaneous wound healing model was developed to investigate if incorporation of prostaglandin E2 (PGE2) into chitosan (CS) hydrogel (CS+PGE2 hydrogel) could enhance its therapeutic effects. Bioluminescence imaging (BLI) was used to noninvasively monitor the inflammation and angiogenesis processes at injured sites during wound healing. We also investigated the M1 and M2 paradigm of macrophage activation during wound healing. Results: CS hydrogel could prolong the release of PGE2, thereby improving its tissue repair and regeneration capabilities. Molecular imaging results showed that the prolonged release of PGE2 could ameliorate inflammation by promoting the M2 phenotypic transformation of macrophages. Also, CS+PGE2 hydrogel could augment angiogenesis at the injured sites during the early phase of tissue repair, as revealed by BLI. Furthermore, our results demonstrated that CS+PGE2 hydrogel could regulate the balance among the three overlapping phases—inflammation, regeneration (angiogenesis), and remodeling (fibrosis)—during cutaneous wound healing. Conclusion: Our findings highlight the potential of the CS+PGE2 hydrogel as a novel therapeutic strategy for promoting tissue regeneration via M2 macrophage polarization. Moreover, molecular imaging provides a platform for monitoring cellular and molecular events in real-time during tissue repair and facilitates the discovery of optimal therapeutics for injury repair by regulating the balance of cytokines and mediators at injured sites.
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Perez-Basterrechea M, Esteban MM, Vega JA, Obaya AJ. Tissue-engineering approaches in pancreatic islet transplantation. Biotechnol Bioeng 2018; 115:3009-3029. [PMID: 30144310 DOI: 10.1002/bit.26821] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 08/08/2018] [Accepted: 08/14/2018] [Indexed: 12/15/2022]
Abstract
Pancreatic islet transplantation is a promising alternative to whole-pancreas transplantation as a treatment of type 1 diabetes mellitus. This technique has been extensively developed during the past few years, with the main purpose of minimizing the complications arising from the standard protocols used in organ transplantation. By using a variety of strategies used in tissue engineering and regenerative medicine, pancreatic islets have been successfully introduced in host patients with different outcomes in terms of islet survival and functionality, as well as the desired normoglycemic control. Here, we describe and discuss those strategies to transplant islets together with different scaffolds, in combination with various cell types and diffusible factors, and always with the aim of reducing host immune response and achieving islet survival, regardless of the site of transplantation.
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Affiliation(s)
- Marcos Perez-Basterrechea
- Unidad de Terapia Celular y Medicina Regenerativa, Servicio de Hematología y Hemoterapia, Hospital Universitario Central de Asturias (HUCA), Oviedo, Spain.,Plataforma de Terapias Avanzadas, Instituto de Investigación Biosanitaria del Principado de Asturias (ISPA), Oviedo, Spain
| | - Manuel M Esteban
- Departamento de Biología Funcional, Universidad de Oviedo, Oviedo, Spain
| | - Jose A Vega
- Departamento de Morfología y Biología Celular, Universidad de Oviedo, Oviedo, Spain.,Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Santiago, Chile
| | - Alvaro J Obaya
- Departamento de Biología Funcional, Universidad de Oviedo, Oviedo, Spain
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48
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Smink AM, de Haan BJ, Lakey JRT, de Vos P. Polymer scaffolds for pancreatic islet transplantation - Progress and challenges. Am J Transplant 2018; 18:2113-2119. [PMID: 29790274 DOI: 10.1111/ajt.14942] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 04/18/2018] [Accepted: 05/10/2018] [Indexed: 02/06/2023]
Abstract
Pancreatic-islet transplantation is a safe and noninvasive therapy for type 1 diabetes. However, the currently applied site for transplantation, ie, the liver, is not the optimal site for islet survival. Because the human body has shortcomings in providing an optimal site, artificial transplantation sites have been proposed. Such an artificial site could consist of a polymeric scaffold that mimics the pancreatic microenvironment and supports islet function. Recently, remarkable progress has been made in the technology of engineering scaffolds. The polymer-islet interactions, the site of implantation, and scaffold prevascularization are critical factors for success or failure of the scaffolds. This article critically reviews these factors while also discussing translation of experimental studies to human application as well as the steps required to create a clinically applicable prevascularized, retrievable scaffold for implantation of insulin-producing cells for treatment of type 1 diabetes mellitus.
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Affiliation(s)
- Alexandra M Smink
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Bart J de Haan
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Jonathan R T Lakey
- Department of Surgery, University of California Irvine, Orange, CA, USA.,Department of Biomedical Engineering, University of California Irvine, Irvine, CA, USA
| | - Paul de Vos
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
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Xiang C, Xie QP. Protection of mouse pancreatic islet function by co‑culture with hypoxia pre‑treated mesenchymal stromal cells. Mol Med Rep 2018; 18:2589-2598. [PMID: 30015882 DOI: 10.3892/mmr.2018.9235] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 04/19/2018] [Indexed: 11/05/2022] Open
Abstract
Ectogenic pancreatic islet transplantation has long been discussed as having the potential to reverse diabetes. The aim of the present study was to evaluate the therapeutic efficacy of co‑transplantation with hypoxia pretreated mesenchymal stem cells (MSCs) and islets in a diabetic mouse model. MSCs were isolated from femoral and tibial bone marrow aspirates from female BALB/c donor mice. MSC proliferation rates and the expression levels of vascular endothelial growth factor A (VEGFA), interleukin (IL)‑6, monocyte chemoattractant protein (MCP)‑1 and matrix metalloproteinase (MMP)‑9 were measured in hypoxic conditions. Subsequently, a streptozotocin‑induced diabetic model was established in BALB/c mice. Glucose tolerance and diabetes reversal rate following co‑transplantation of hypoxia pre‑cultured MSCs and islets were demonstrated at different conditions during transplantation. The present study results demonstrated that MSCs increased their proliferation rate and the secretion of growth‑related cytokines, including VEGFA, IL‑6, MCP‑1 and MMP‑9 in a hypoxic environment. In the diabetes animal model, fewer islets (~250) were required to reverse the impaired glucose tolerance condition in Islets + Hypoxia cultured MSCs transplant group compared with the Islets‑only group (~400 islets) and the Islets + Normal cultured MSCs group (~300 islets). Hypoxia‑cultured MSC co‑transplantation accelerated glycemic utilization following glucose intake. In subjects with hyperglycemia control for islet only transplantation group, MSCs pre‑cultured in hypoxic condition prior to co‑transplantation may potentially improve islet tissue regeneration.
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Affiliation(s)
- Cheng Xiang
- Department of Surgery, The Second Affiliated Hospital of Zhejiang University, Hangzhou, Zhejiang 310009, P.R. China
| | - Qiu-Ping Xie
- Department of Surgery, The Second Affiliated Hospital of Zhejiang University, Hangzhou, Zhejiang 310009, P.R. China
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50
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Comparison of Teratoma Formation between Embryonic Stem Cells and Parthenogenetic Embryonic Stem Cells by Molecular Imaging. Stem Cells Int 2018; 2018:7906531. [PMID: 29765423 PMCID: PMC5889892 DOI: 10.1155/2018/7906531] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 12/27/2017] [Indexed: 11/18/2022] Open
Abstract
With their properties of self-renewal and differentiation, embryonic stem (ES) cells hold great promises for regenerative therapy. However, teratoma formation and ethical concerns of ES cells may restrict their potential clinical applications. Currently, parthenogenetic embryonic stem (pES) cells have attracted the interest of researchers for its self-renewing and pluripotent differentiation while eliciting less ethic concerns. In this study, we established a model with ES and pES cells both stably transfected with a double-fusion reporter gene containing renilla luciferase (Rluc) and red fluorescent protein (RFP) to analyze the mechanisms of teratoma formation. Transgenic Vegfr2-luc mouse, which expresses firefly luciferase (Fluc) under the promoter of vascular endothelial growth factor receptor 2 (Vegfr2-luc), was used to trace the growth of new blood vessel recruited by transplanted cells. Bioluminescence imaging (BLI) of Rluc/Fluc provides an effective tool in estimating the growth and angiogenesis of teratoma in vivo. We found that the tumorigenesis and angiogenesis capacity of ES cells were higher than those of pES cells, in which VEGF/VEGFR2 signal pathway plays an important role. In conclusion, pES cells have the decreased potential of teratoma formation but meanwhile have similar differentiating capacity compared with ES cells. These data demonstrate that pES cells provide an alternative source for ES cells with the risk reduction of teratoma formation and without ethical controversy.
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