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Toftdal MS, Christensen NP, Kadumudi FB, Dolatshahi-Pirouz A, Grunnet LG, Chen M. Mechanically reinforced hydrogel vehicle delivering angiogenic factor for beta cell therapy. J Colloid Interface Sci 2024; 667:54-63. [PMID: 38615623 DOI: 10.1016/j.jcis.2024.04.050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 03/18/2024] [Accepted: 04/08/2024] [Indexed: 04/16/2024]
Abstract
Type 1 diabetes mellitus (T1DM) is a chronic disease affecting millions worldwide. Insulin therapy is currently the golden standard for treating T1DM; however, it does not restore the normal glycaemic balance entirely, which increases the risk of secondary complications. Beta-cell therapy may be a possible way of curing T1DM and has already shown promising results in the clinic. However, low retention rates, poor cell survival, and limited therapeutic potential are ongoing challenges, thus increasing the need for better cell encapsulation devices. This study aimed to develop a mechanically reinforced vascular endothelial growth factor (VEGF)-delivering encapsulation device suitable for beta cell encapsulation and transplantation. Poly(l-lactide-co-ε-caprolactone) (PLCL)/gelatin methacryloyl (GelMA)/alginate coaxial nanofibres were produced using electrospinning and embedded in an alginate hydrogel. The encapsulation device was physically and biologically characterised and was found to be suitable for INS-1E beta cell encapsulation, vascularization, and transplantation in terms of its biocompatibility, porosity, swelling ratio and mechanical properties. Lastly, VEGF was incorporated into the hydrogel and the release kinetics and functional studies revealed a sustained release of bioactive VEGF for at least 14 days, making the modified alginate system a promising candidate for improving the beta cell survival after transplantation.
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Affiliation(s)
- Mette Steen Toftdal
- Department of Biological and Chemical Engineering, Aarhus University, 8000 Aarhus C, Denmark; Department of Cell Formulation and Delivery, Novo Nordisk A/S, 2760 Måløv, Denmark
| | | | - Firoz Babu Kadumudi
- Department of Health Technology, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| | | | - Lars Groth Grunnet
- Department of Cell Formulation and Delivery, Novo Nordisk A/S, 2760 Måløv, Denmark
| | - Menglin Chen
- Department of Biological and Chemical Engineering, Aarhus University, 8000 Aarhus C, Denmark.
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Toftdal MS, Grunnet LG, Chen M. Emerging Strategies for Beta Cell Encapsulation for Type 1 Diabetes Therapy. Adv Healthc Mater 2024; 13:e2400185. [PMID: 38452393 DOI: 10.1002/adhm.202400185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 02/28/2024] [Indexed: 03/09/2024]
Abstract
Diabetes is a prevalent chronic disease affecting millions of people globally. To address this health challenge, advanced beta cell therapy using biomaterials-based macroscale, microscale, and nanoscale encapsulation devices must tackle various obstacles. First, overcoming foreign body responses is a major focus of research. Strategies such as immunomodulatory materials and physical immunoshielding are investigated to reduce the immune response and improve the longevity of the encapsulated cells. Furthermore, oxygenating strategies, such as the use of oxygen-releasing biomaterials, are developed to improve oxygen diffusion and promote cell survival. Finally, yet importantly, promoting vascularization through the use of angiogenic growth factors and the incorporation of pre-vascularized materials are also explored to enhance nutrient and oxygen supply to the encapsulated cells. This review seeks to specifically highlight the emerging research strategies developed to overcome these challenges using micro and nanoscale biomaterial encapsulation devices. Continuously improving and refining these strategies make an advance toward realizing the improved therapeutic potential of the encapsulated beta cells.
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Affiliation(s)
- Mette Steen Toftdal
- Department of Biological and Chemical Engineering, Aarhus University, Aarhus C, 8000, Denmark
- Department of Cell Formulation and Delivery, Novo Nordisk A/S, Måløv, 2760, Denmark
| | - Lars Groth Grunnet
- Department of Cell Formulation and Delivery, Novo Nordisk A/S, Måløv, 2760, Denmark
| | - Menglin Chen
- Department of Biological and Chemical Engineering, Aarhus University, Aarhus C, 8000, Denmark
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Rathee J, Malhotra S, Pandey M, Jain N, Kaul S, Gupta G, Nagaich U. Recent Update on Nanoemulsion Impregnated Hydrogel: a Gleam into the Revolutionary Strategy for Diffusion-Controlled Delivery of Therapeutics. AAPS PharmSciTech 2023; 24:151. [PMID: 37438613 DOI: 10.1208/s12249-023-02611-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Accepted: 06/25/2023] [Indexed: 07/14/2023] Open
Abstract
Since earlier times, dermatological remedies have been utilized to treat diseases associated with pain, irritation, and skin conditions. Compared to other routes of drug delivery, topical delivery of drugs offers several benefits. Scientists are investigating different alterations in dosage forms in addition to existing topical formulations such as ointments, gels, creams, lotions, and ointments to significantly improve the permeation of drugs and enhance the pharmacological efficacy of medications that are poorly absorbed via the skin. Conventional formulations have a plethora of problems viz. poor absorption, no target specificity, low spreadability, and inadequate bioavailability which leads the researchers toward developing novel formulations like nanoemulsions. The nanoemulsion can enhance the gradient in concentration and thermodynamic movement toward the epidermis and enhance the penetration of its constituents. However, due to its difficult application, nanoemulsion's lower viscosity limited its use in transdermal delivery. Thus, the development of nanoemulsion-based hydrogels has shown to be a successful strategy for removing obstacles from existing drug formulations. The simple application, expedient spreadability, non-stickiness, safety, and effectiveness of nanoemulsion-based hydrogel have led to substantial growth in their research in recent years. This review gives a brief idea about the prevalence of skin diseases, skin as an obstacle for drug delivery, and recent research insights to combat these obstacles. The work highlights the mechanism of drug release via nanoemulsion, hydrogels, and nanoemulsion-based hydrogels with reference to recent research on hydrophobic and hydrophilic drugs.
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Affiliation(s)
- Jatin Rathee
- Department of Pharmaceutics, Amity Institute of Pharmacy, Amity University, Noida, UP, India
| | - Sakshi Malhotra
- Department of Pharmaceutics, Amity Institute of Pharmacy, Amity University, Noida, UP, India
| | - Manisha Pandey
- Department of Pharmaceutical Sciences, Central University of Haryana, Mahendergarh, 123031, India.
| | - Neha Jain
- Department of Pharmaceutics, Amity Institute of Pharmacy, Amity University, Noida, UP, India.
| | - Shreya Kaul
- Department of Pharmaceutics, Amity Institute of Pharmacy, Amity University, Noida, UP, India
| | - Gaurav Gupta
- School of Pharmacy, Suresh Gyan Vihar University, Jagatpura, Jaipur, 302017, India
- Department of Pharmacology, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, 602105, India
| | - Upendra Nagaich
- Department of Pharmaceutics, Amity Institute of Pharmacy, Amity University, Noida, UP, India
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Wang Z, Jiang Z, Lu R, Kou L, Zhao YZ, Yao Q. Formulation strategies to provide oxygen-release to contrast local hypoxia for transplanted islets. Eur J Pharm Biopharm 2023; 187:130-140. [PMID: 37105362 DOI: 10.1016/j.ejpb.2023.04.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 04/08/2023] [Accepted: 04/20/2023] [Indexed: 04/29/2023]
Abstract
Islet transplantation refers to the transfusion of healthy islet cells into the diabetic recipients and reconstruction of their endogenous insulin secretion to achieve insulin independence. It is a minimally invasive surgery that holds renewed prospect as a therapeutic method for type 1 diabetes mellitus. However, poor oxygenation in the early post-transplantation period is considered as one of the major causes of islet loss and dysfunction. Due to the metabolism chacteristics, islets required a high supply of oxygen for cell survival while a hypoxia environment would lead to severe islet loss and graft failure. Emerging strategies have been proposed, including providing external oxygen and speeding up revascularization. From the perspective of formulation science, it is feasible and practical to protect transplanted islets by oxygen-release before revascularization as opposed to local hypoxia. In this study, we review the potential formulation strategies that could provide oxygen-release by either delivering external oxygen or triggering localized oxygen generation for transplanted islets.
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Affiliation(s)
- Zeqing Wang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - Zhikai Jiang
- The Second School of Medicine, Wenzhou Medical University, Wenzhou, China
| | - Ruijie Lu
- The Second School of Medicine, Wenzhou Medical University, Wenzhou, China
| | - Longfa Kou
- The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Ying-Zheng Zhao
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China; Cixi Biomedical Research Institute, Wenzhou Medical University, Zhejiang, China
| | - Qing Yao
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China; Cixi Biomedical Research Institute, Wenzhou Medical University, Zhejiang, China.
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Suvarnapathaki S, Nguyen A, Goulopoulos A, Camci-Unal G. Oxygen-Generating Scaffolds for Cardiac Tissue Engineering Applications. ACS Biomater Sci Eng 2023; 9:409-426. [PMID: 36469567 DOI: 10.1021/acsbiomaterials.2c00853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Homogeneous vascularization of implanted tissue constructs can extend to 5 weeks, during which cell death can occur due to inadequate availability of oxygen. Researchers are engineering biomaterials that generate and release oxygen in a regulated manner, in an effort to overcome this hurdle. A main limitation of the existing oxygen-generating biomaterials is the uncontrolled release of oxygen, which is ultimately detrimental to the cells. This study demonstrates the incorporation of calcium peroxide (CaO2) within a hydrophobic polymer, polycaprolactone (PCL), to yield composite scaffolds with controlled oxygen release kinetics sustained over 5 weeks. Oxygen-generating microparticles coencapsulated with cardiomyocytes in a gelatin-based hydrogel matrix can serve as model systems for cardiac tissue engineering. Specifically, the results reveal that the oxygen-generating microspheres significantly improve the scaffold mechanical strength ranging from 5 kPa to 35 kPa, have an average scaffold pore size of 50-100 μm, swelling ratios of 33.3-29.8%, and degradation with 10-49% remaining mass at the end of a 48 h accelerated enzymatic degradation. The oxygen-generating scaffolds demonstrate improvement in cell viability, proliferation, and metabolic activity compared to the negative control group when cultured under hypoxia. Additionally, the optimized oxygen-generating constructs display no cytotoxicity or apoptosis. These oxygen-generating scaffolds can possibly assist the in vivo translation of cardiac tissue constructs.
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Affiliation(s)
- Sanika Suvarnapathaki
- Biomedical Engineering and Biotechnology Program, University of Massachusetts Lowell, One University Avenue, Lowell, Massachusetts 01854, United States.,Department of Chemical Engineering, University of Massachusetts Lowell, One University Avenue, Lowell, Massachusetts 01854, United States
| | - Angelina Nguyen
- Department of Chemical Engineering, University of Massachusetts Lowell, One University Avenue, Lowell, Massachusetts 01854, United States
| | - Anastasia Goulopoulos
- Department of Chemical Engineering, University of Massachusetts Lowell, One University Avenue, Lowell, Massachusetts 01854, United States
| | - Gulden Camci-Unal
- Department of Chemical Engineering, University of Massachusetts Lowell, One University Avenue, Lowell, Massachusetts 01854, United States.,Department of Surgery, University of Massachusetts Medical School, 55 Lake Avenue North, Worcester, Massachusetts 01605, United States
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Khodadadi Yazdi M, Zarrintaj P, Khodadadi A, Arefi A, Seidi F, Shokrani H, Saeb MR, Mozafari M. Polysaccharide-based electroconductive hydrogels: Structure, properties and biomedical applications. Carbohydr Polym 2022; 278:118998. [PMID: 34973800 DOI: 10.1016/j.carbpol.2021.118998] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 12/06/2021] [Accepted: 12/06/2021] [Indexed: 01/16/2023]
Abstract
Architecting an appropriate platform for biomedical applications requires setting a balance between simplicity and complexity. Polysaccharides (PSAs) play essential roles in our life in food resources, structural materials, and energy storage capacitors. Moreover, the diversity and abundance of PSAs have made them an indispensable part of food ingredients and cosmetics. PSA-based hydrogels have been extensively reviewed in biomedical applications. These hydrogels can be designed in different forms to show optimum performance. For instance, electroactive PSA-based hydrogels respond under an electric stimulus. Such performance can be served in stimulus drug release and determining cell fate. This review classifies and discusses the structure, properties, and applications of the most important polysaccharide-based electroactive hydrogels (agarose, alginate, chitosan, cellulose, and dextran) in medicine, focusing on their usage in tissue engineering, flexible electronics, and drug delivery applications.
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Affiliation(s)
- Mohsen Khodadadi Yazdi
- International Innovation Center for Forest Chemicals and Materials and Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
| | - Payam Zarrintaj
- School of Chemical Engineering, Oklahoma State University, 420 Engineering North, Stillwater, OK 74078, United States
| | - Ali Khodadadi
- Department of Internal Medicine, School of Medicine, Gonabad University of Medical Sciences, Gonabad, Iran
| | - Ahmad Arefi
- Department of Chemical Engineering, McMaster University, Hamilton, Canada
| | - Farzad Seidi
- International Innovation Center for Forest Chemicals and Materials and Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China.
| | - Hanieh Shokrani
- International Innovation Center for Forest Chemicals and Materials and Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
| | - Mohammad Reza Saeb
- Department of Polymer Technology, Faculty of Chemistry, Gdańsk University of Technology, G. Narutowicza 11/12, 80-233 Gdańsk, Poland
| | - Masoud Mozafari
- Department of Tissue Engineering & Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran.
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Ghasemi A, Akbari E, Imani R. An Overview of Engineered Hydrogel-Based Biomaterials for Improved β-Cell Survival and Insulin Secretion. Front Bioeng Biotechnol 2021; 9:662084. [PMID: 34513805 PMCID: PMC8427138 DOI: 10.3389/fbioe.2021.662084] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 07/16/2021] [Indexed: 12/28/2022] Open
Abstract
Islet transplantation provides a promising strategy in treating type 1 diabetes as an autoimmune disease, in which damaged β-cells are replaced with new islets in a minimally invasive procedure. Although islet transplantation avoids the complications associated with whole pancreas transplantations, its clinical applications maintain significant drawbacks, including long-term immunosuppression, a lack of compatible donors, and blood-mediated inflammatory responses. Biomaterial-assisted islet transplantation is an emerging technology that embeds desired cells into biomaterials, which are then directly transplanted into the patient, overcoming the aforementioned challenges. Among various biomaterials, hydrogels are the preferred biomaterial of choice in these transplants due to their ECM-like structure and tunable properties. This review aims to present a comprehensive overview of hydrogel-based biomaterials that are engineered for encapsulation of insulin-secreting cells, focusing on new hydrogel design and modification strategies to improve β-cell viability, decrease inflammatory responses, and enhance insulin secretion. We will discuss the current status of clinical studies using therapeutic bioengineering hydrogels in insulin release and prospective approaches.
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Affiliation(s)
| | | | - Rana Imani
- Department of Biomedical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
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de Sousa Araújo E, Domingues Stocco T, Fernandes de Sousa G, Afewerki S, Marciano FR, Alexandre Finzi Corat M, Michelle Machado de Paula M, Ferreira Cândido Lima Verde T, Cristina Moreira Silva M, Oliveira Lobo A. Oxygen-generating microparticles in chondrocytes-laden hydrogels by facile and versatile click chemistry strategy. Colloids Surf B Biointerfaces 2021; 205:111850. [PMID: 34015729 DOI: 10.1016/j.colsurfb.2021.111850] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 05/03/2021] [Accepted: 05/11/2021] [Indexed: 01/12/2023]
Abstract
Currently, oxygen supply for in vitro cell culture is one of the major challenges in tissue engineering, especially in three-dimensional (3D) structures, such as polymeric hydrogels, because oxygen is an essential element for cells survival. In this context, oxygen levels must be maintained in articular cartilage to promote the differentiation, viability, and proliferation of chondrocytes due to the low level of oxygen presence in this region. Although some technologies employ oxygen-generating materials to add sufficient oxygen levels, the limitations and challenges of current technologies include the lack of controlled, sustained, and prolonged release of the oxygen. Moreover, the fabrication methods may leave some impurities or residues resulting in toxicity to the cells. "Click" chemistry is a facile, versatile, and compatible chemical strategy to engineer hydrogels for tissue engineering applications. Herein, we disclose the engineering of oxygen-generating microparticles in chondrocytes-laden hydrogels through a versatile catalyst-free tetrazine and norbornene inverse electron demand Diels‒Alder (iEDDA) click reaction. The hydrogels combine chondroitin sulfate (CS) and poly(ethylene glycol) (PEG) crosslinked in situ, displaying tunable rheological and mechanical properties, for sustained and prolonged oxygen-release. Gene expression analysis of the chondrocytes by real-time reverse transcription polymerase chain reaction (RT-PCR) demonstrated promising cell response within the engineered hydrogel.
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Affiliation(s)
- Erlane de Sousa Araújo
- LIMAV-Interdisciplinary Laboratory for Advanced Materials, BioMatLab, UFPI - Federal University of Piaui, Teresina, PI, 64049-550, Brazil
| | - Thiago Domingues Stocco
- Faculty of Medical Sciences, Unicamp - State University of Campinas, Campinas, SP, 13083-877, Brazil; University of Santo Amaro, São Paulo, SP, 04829-300, Brazil
| | - Gustavo Fernandes de Sousa
- LIMAV-Interdisciplinary Laboratory for Advanced Materials, BioMatLab, UFPI - Federal University of Piaui, Teresina, PI, 64049-550, Brazil
| | - Samson Afewerki
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, United States; Division of Health Sciences and Technology, Harvard University ‒ Massachusetts Institute of Technology (MIT), Cambridge, MA, 02139, United States.
| | | | - Marcus Alexandre Finzi Corat
- Multidisciplinary Center for Biological Research, Unicamp - State University of Campinas, Campinas, SP, 13083-877, Brazil
| | | | - Thiago Ferreira Cândido Lima Verde
- LIMAV-Interdisciplinary Laboratory for Advanced Materials, BioMatLab, UFPI - Federal University of Piaui, Teresina, PI, 64049-550, Brazil
| | - Mayara Cristina Moreira Silva
- Multidisciplinary Center for Biological Research, Unicamp - State University of Campinas, Campinas, SP, 13083-877, Brazil
| | - Anderson Oliveira Lobo
- LIMAV-Interdisciplinary Laboratory for Advanced Materials, BioMatLab, UFPI - Federal University of Piaui, Teresina, PI, 64049-550, Brazil; Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, United States.
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