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Li Y, Yang G, Wang Y, Li Y, Zhang S, Li R, Yang L, Wang J, Pei X, Wan Q, Chen J. Osteoimmunity-regulating nanosilicate-reinforced hydrogels for enhancing osseointegration. J Mater Chem B 2023; 11:9933-9949. [PMID: 37822156 DOI: 10.1039/d3tb01509b] [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: 10/13/2023]
Abstract
Following the introduction of osteo-immunomodulation as a new and important strategy to enhance material osseointegration, achieving an appropriate immune response after biomaterial implantation has become a significant challenge for efficient bone repair. In this study, a nanosilicate-reinforced sodium alginate (SA) hydrogel was fabricated by introducing montmorillonite (MMT) nanoparticles. Meanwhile, an immunogenically bioactive agent, harmine (HM), was loaded and released to induce macrophage differentiation into the M2 type. The fabricated SA/MMT/HM (SMH) hydrogel exhibited improved mechanical stiffness and stability, which also efficiently promoted macrophage anti-inflammatory M2 phenotype polarization and enhanced the secretion of pro-tissue healing cytokines for inducing a favorable immunomodulatory microenvironment for the osteogenic differentiation of bone marrow stromal cells (BMSCs). Furthermore, a rat air-pouch model and a critical-size bone defect model were used and the results showed that the SMH hydrogel increased the proportion of M2 macrophages and markedly reduced local inflammation, while enhancing desirable new bone formation. Transcriptomic analysis revealed that the SMH hydrogel accelerated the M1-to-M2 transition of macrophages by inhibiting relevant inflammatory signaling pathways and activating the PI3K-AKT1 signaling pathway. Taken together, this high-intensity immunomodulatory hydrogel may be a promising biomaterial for bone regeneration and provide a valuable base and positive enlightenment for massive bone defect repair.
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Affiliation(s)
- Yuanyuan Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chengdu 610041, China.
- Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, South Peoples Road, Chengdu 610041, China
- Department of Preventive Dentistry, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, China
| | - Guangmei Yang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chengdu 610041, China.
- Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, South Peoples Road, Chengdu 610041, China
| | - Yuting Wang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chengdu 610041, China.
- Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, South Peoples Road, Chengdu 610041, China
| | - Yahong Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chengdu 610041, China.
- Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, South Peoples Road, Chengdu 610041, China
| | - Shu Zhang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chengdu 610041, China.
- Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, South Peoples Road, Chengdu 610041, China
| | - Ruyi Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chengdu 610041, China.
- Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, South Peoples Road, Chengdu 610041, China
| | - Linxin Yang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chengdu 610041, China.
- Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, South Peoples Road, Chengdu 610041, China
| | - Jian Wang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chengdu 610041, China.
- Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, South Peoples Road, Chengdu 610041, China
| | - Xibo Pei
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chengdu 610041, China.
- Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, South Peoples Road, Chengdu 610041, China
| | - Qianbing Wan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chengdu 610041, China.
- Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, South Peoples Road, Chengdu 610041, China
| | - Junyu Chen
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chengdu 610041, China.
- Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, South Peoples Road, Chengdu 610041, China
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Rivero-Ramos P, Unthank MG, Sanz T, Rodrigo MD, Benlloch-Tinoco M. Synergistic depolymerisation of alginate and chitosan by high hydrostatic pressure (HHP) and pulsed electric fields (PEF) treatment in the presence of H 2O 2. Carbohydr Polym 2023; 316:120999. [PMID: 37321720 DOI: 10.1016/j.carbpol.2023.120999] [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: 12/15/2022] [Revised: 04/28/2023] [Accepted: 05/05/2023] [Indexed: 06/17/2023]
Abstract
Physically-induced depolymerisation procedures are often preferred for obtaining alginate and chitosan oligosaccharides as they either do not use or make minimal use of additional chemicals; therefore, separation of the final products is facile. In this work, solutions of three types of alginate with different mannuronic and guluronic acid residues ratio (M/G ratio) and molecular weights (Mw) and one type of chitosan were non-thermally processed by applying high hydrostatic pressures (HHP) up to 500 MPa (20 min) or pulsed electric fields (PEF) up to 25 kV cm-1 (4000 μm) in the absence or presence of 3 % hydrogen peroxide (H2O2). The impact on the physicochemical properties of alginate and chitosan was investigated by rheology, GPC, XRD, FTIR, and 1H NMR. In the rheological investigations, the apparent viscosities of all samples decreased with increasing shear rate, indicating a non-Newtonian shear-thinning behaviour. GPC results reported Mw reductions that ranged between 8 and 96 % for all treatments. NMR results revealed that HHP and PEF treatment predominantly reduced the M/G ratio of alginate and the degree of deacetylation (DDA) of chitosan, whilst H2O2 promoted an increase in the M/G ratio in alginate and DDA of chitosan. Overall, the present investigation has demonstrated the feasibility of HHP and PEF for rapidly producing alginate and chitosan oligosaccharides.
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Affiliation(s)
- Pedro Rivero-Ramos
- Department of Applied Sciences, Northumbria University, Newcastle Upon Tyne NE1 8ST, Tyne & Wear, England, United Kingdom.
| | - Matthew G Unthank
- Department of Applied Sciences, Northumbria University, Newcastle Upon Tyne NE1 8ST, Tyne & Wear, England, United Kingdom.
| | - Teresa Sanz
- Department of Food Safety and Preservation, Institute of Agrochemistry and Food Technology (IATA-CSIC), Av. Agustín Escardino 7, Paterna 46980, Valencia, Spain.
| | - Maria Dolores Rodrigo
- Department of Food Safety and Preservation, Institute of Agrochemistry and Food Technology (IATA-CSIC), Av. Agustín Escardino 7, Paterna 46980, Valencia, Spain.
| | - Maria Benlloch-Tinoco
- Department of Applied Sciences, Northumbria University, Newcastle Upon Tyne NE1 8ST, Tyne & Wear, England, United Kingdom.
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Varela-Feijoo A, Djemia P, Narita T, Pignon F, Baeza-Squiban A, Sirri V, Ponton A. Multiscale investigation of viscoelastic properties of aqueous solutions of sodium alginate and evaluation of their biocompatibility. SOFT MATTER 2023; 19:5942-5955. [PMID: 37490024 DOI: 10.1039/d3sm00159h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
In order to get better knowledge of mechanical properties from microscopic to macroscopic scale of biopolymers, viscoelastic bulk properties of aqueous solutions of sodium alginate were studied at different scales by combining macroscopic shear rheology (Hz), diffusing-wave spectroscopy microrheology (kHz-MHz) and Brillouin spectroscopy (GHz). Structural properties were also directly probed by small-angle X-ray scattering (SAXS). The results demonstrate a change from polyelectrolyte behavior to neutral polymer behavior by increasing polymer concentration with the determination of characteristic sizes (persistence length, correlation length). The viscoelastic properties probed at the phonon wavelength much higher than the ones obtained at low frequency reflect the variation of microscopic viscosity. First experiments obtained by metabolic activity assays with mouse embryonic fibroblasts showed biocompatibility of sodium alginate aqueous solutions in the studied range of concentrations (2.5-10 g L-1) and consequently their potential biomedical applications.
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Affiliation(s)
- Alberto Varela-Feijoo
- Laboratoire Matière et systèmes complexes (MSC), Université Paris Cité et CNRS, UMR 7057, 10 rue A. Domon et L. Duquet, 75013 Paris, France.
- Université Paris Saclay, INRAE, AgroParisTech, UMR SayFood, 91120 Palaiseau, France
| | - Philippe Djemia
- Laboratoire des Sciences des procédés et des matériaux (LSPM), UPR-CNRS 3407, 99 Avenue Jean-Baptiste Clément, 93530 Villetaneuse, France
| | - Tetsuharu Narita
- École supérieure de physique et de chimie industrielles de la ville de Paris (ESPCI), 10 Rue Vauquelin, 75005 Paris, France
| | - Frédéric Pignon
- Laboratoire rhéologie et procédés (LPG) Université Grenoble Alpes, CNRS, UMR 5520, Domaine Universitaire, BP 53, 38041 Grenoble Cedex 9, France
| | - Armelle Baeza-Squiban
- Unité de Biologie fonctionnelle et adaptative (BFA), Université Paris Cité et CNRS, UMR 8251, 4 rue Marie-Andrée Lagroua Weill-Hallé, 75013 Paris, France
| | - Valentina Sirri
- Unité de Biologie fonctionnelle et adaptative (BFA), Université Paris Cité et CNRS, UMR 8251, 4 rue Marie-Andrée Lagroua Weill-Hallé, 75013 Paris, France
| | - Alain Ponton
- Laboratoire Matière et systèmes complexes (MSC), Université Paris Cité et CNRS, UMR 7057, 10 rue A. Domon et L. Duquet, 75013 Paris, France.
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Wang J, Song Y, Xie W, Zhao J, Wang Y, Yu W. Therapeutic angiogenesis based on injectable hydrogel for protein delivery in ischemic heart disease. iScience 2023; 26:106577. [PMID: 37192972 PMCID: PMC10182303 DOI: 10.1016/j.isci.2023.106577] [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] [Indexed: 05/18/2023] Open
Abstract
Ischemic heart disease (IHD) remains the leading cause of death and disability worldwide and leads to myocardial necrosis and negative myocardial remodeling, ultimately leading to heart failure. Current treatments include drug therapy, interventional therapy, and surgery. However, some patients with severe diffuse coronary artery disease, complex coronary artery anatomy, and other reasons are unsuitable for these treatments. Therapeutic angiogenesis stimulates the growth of the original blood vessels by using exogenous growth factors to generate more new blood vessels, which provides a new treatment for IHD. However, direct injection of these growth factors can cause a short half-life and serious side effects owing to systemic spread. Therefore, to overcome this problem, hydrogels have been developed for temporally and spatially controlled delivery of single or multiple growth factors to mimic the process of angiogenesis in vivo. This paper reviews the mechanism of angiogenesis, some important bioactive molecules, and natural and synthetic hydrogels currently being applied for bioactive molecule delivery to treat IHD. Furthermore, the current challenges of therapeutic angiogenesis in IHD and its potential solutions are discussed to facilitate real translation into clinical applications in the future.
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Affiliation(s)
- Junke Wang
- Department of Cardiology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 26000, China
- Qingdao Medical College, Qingdao University, Qingdao, Shandong 266071, China
| | - Yancheng Song
- Department of Gastrointestinal Surgery, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 26000, China
| | - Wenjie Xie
- Department of Clinical Laboratory, The Affiliated Hospital of Qingdao University, Shandong, Qingdao, Shandong 26000, China
| | - Jiang Zhao
- Department of Urology, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Ying Wang
- School of Health and Life Sciences, University of Health and Rehabilitation Sciences, Qingdao, Shandong 26000, China
- Corresponding author
| | - Wenzhou Yu
- Department of Cardiovascular Surgery, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 26003, China
- Corresponding author
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Li Y, Xu Z, Wang J, Pei X, Chen J, Wan Q. Alginate-based biomaterial-mediated regulation of macrophages in bone tissue engineering. Int J Biol Macromol 2023; 230:123246. [PMID: 36649862 DOI: 10.1016/j.ijbiomac.2023.123246] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 12/06/2022] [Accepted: 01/09/2023] [Indexed: 01/15/2023]
Abstract
Many studies in the bone tissue engineering field have focused on the interactions between materials and bone marrow stem cells. With the development of osteoimmunology, the immune cells' essential role in biomaterial-mediated osteogenesis has increasingly been recognized. As a promising therapeutic candidate for bone defects due to their prominent biocompatibility, tuneability, and versatility, it is necessary to develop alginate-based biomaterials that can regulate immune cells, especially macrophages. Moreover, modified alginate-based biomaterials may facilitate better regulation of macrophage phenotypes by the newly endowed physicochemical properties, including stiffness, porosity, hydrophilicity, and electrical properties. This review summarizes the role of macrophages in bone regeneration and the recent research progress related to the effects of alginate-based biomaterials on macrophages applied in bone tissue engineering. This review also emphasizes the strategies adopted by material design to regulate macrophage phenotypes, the corresponding macrophage responses, and their contribution to osteogenesis.
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Affiliation(s)
- Yuanyuan Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China; West China School of Stomatology, Sichuan University, Chengdu 610041, China
| | - Zhengyi Xu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China; West China School of Stomatology, Sichuan University, Chengdu 610041, China
| | - Jian Wang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China; West China School of Stomatology, Sichuan University, Chengdu 610041, China
| | - Xibo Pei
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China; West China School of Stomatology, Sichuan University, Chengdu 610041, China
| | - Junyu Chen
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China; West China School of Stomatology, Sichuan University, Chengdu 610041, China.
| | - Qianbing Wan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China; West China School of Stomatology, Sichuan University, Chengdu 610041, China.
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6
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Xue J, Liu Y. Mesenchymal Stromal/Stem Cell (MSC)-Based Vector Biomaterials for Clinical Tissue Engineering and Inflammation Research: A Narrative Mini Review. J Inflamm Res 2023; 16:257-267. [PMID: 36713049 PMCID: PMC9875582 DOI: 10.2147/jir.s396064] [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: 11/03/2022] [Accepted: 01/18/2023] [Indexed: 01/21/2023] Open
Abstract
Mesenchymal stromal/stem cells (MSCs) have the ability of self-renewal, the potential of multipotent differentiation, and a strong paracrine capacity, which are mainly used in the field of clinical medicine including dentistry and orthopedics. Therefore, tissue engineering research using MSCs as seed cells is a current trending directions. However, the healing effect of direct cell transplantation is unstable, and the paracrine/autocrine effects of MSCs cannot be effectively elicited. Tumorigenicity and heterogeneity are also concerns. The combination of MSCs as seed cells and appropriate vector materials can form a stable cell growth environment, maximize the secretory features of stem cells, and improve the biocompatibility and mechanical properties of vector materials that facilitate the delivery of drugs and various secretory factors. There are numerous studies on tissue engineering and inflammation of various biomaterials, mainly involving bioceramics, alginate, chitosan, hydrogels, cell sheets, nanoparticles, and three-dimensional printing. The combination of bioceramics, hydrogels and cell sheets with stem cells has demonstrated good therapeutic effects in clinical applications. The application of alginate, chitosan, and nanoparticles in animal models has also shown good prospects for clinical applications. Three-dimensional printing technology can circumvent the shortage of biomaterials, greatly improve the properties of vector materials, and facilitate the transplantation of MSCs. The purpose of this narrative review is to briefly discuss the current use of MSC-based carrier biomaterials to provide a useful resource for future tissue engineering and inflammation research using stem cells as seed cells.
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Affiliation(s)
- Junshuai Xue
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan, People’s Republic of China
| | - Yang Liu
- Department of General Surgery, Vascular Surgery, Qilu Hospital of Shandong University, Jinan City, People’s Republic of China,Correspondence: Yang Liu, Department of General surgery, Vascular Surgery, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, People’s Republic of China, Tel +86 18560088317, Email
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Fuenzalida-Werner JP, Mishra K, Stankevych M, Klemm U, Ntziachristos V, Stiel AC. Alginate beads as a highly versatile test-sample for optoacoustic imaging. PHOTOACOUSTICS 2022; 25:100301. [PMID: 35036313 PMCID: PMC8749058 DOI: 10.1016/j.pacs.2021.100301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 08/31/2021] [Accepted: 09/06/2021] [Indexed: 05/04/2023]
Abstract
Test-samples are necessary for the development of emerging imaging approaches such as optoacoustics (OA); these can be used to benchmark new labeling agents and instrumentation, or to characterize image analysis algorithms or the inversion required to form the three-dimensional reconstructions. Alginate beads (AlBes) loaded with labeled mammalian or bacterial cells provide a method of creating defined structures of controllable size and photophysical characteristics and are well-suited for both in vitro and in vivo use. Here we describe a simple and rapid method for efficient and reproducible production of AlBes with specific characteristics and show three example applications with multispectral OA tomography imaging. We show the advantage of AlBes for studying and eventually improving photo-switching OA imaging approaches. As highly defined, homogeneous, quasi point-like signal sources, AlBes might hold similar advantages for studying other agents, light-fluence models, or the impact of detection geometries on correct image formation in the near future.
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Affiliation(s)
- Juan Pablo Fuenzalida-Werner
- Institute of Biological and Medical Imaging (IBMI), Helmholtz Zentrum München, D-85764 Neuherberg, Germany
- Chair of Biogenic Functional Materials, Technical University of Munich, D-94315 Straubing, Germany
| | - Kanuj Mishra
- Institute of Biological and Medical Imaging (IBMI), Helmholtz Zentrum München, D-85764 Neuherberg, Germany
| | - Mariia Stankevych
- Institute of Biological and Medical Imaging (IBMI), Helmholtz Zentrum München, D-85764 Neuherberg, Germany
| | - Uwe Klemm
- Institute of Biological and Medical Imaging (IBMI), Helmholtz Zentrum München, D-85764 Neuherberg, Germany
| | - Vasilis Ntziachristos
- Institute of Biological and Medical Imaging (IBMI), Helmholtz Zentrum München, D-85764 Neuherberg, Germany
- Chair of Biological Imaging, Technische Universität München, D-81675 München, Germany
- Center for Translational Cancer Research (TranslaTUM), D-81675 München, Germany
| | - Andre C. Stiel
- Institute of Biological and Medical Imaging (IBMI), Helmholtz Zentrum München, D-85764 Neuherberg, Germany
- Corresponding author.
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8
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Functional role of crosslinking in alginate scaffold for drug delivery and tissue engineering: A review. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110807] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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9
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Sheir MM, Nasra MMA, Abdallah OY. Chitosan alginate nanoparticles as a platform for the treatment of diabetic and non-diabetic pressure ulcers: Formulation and in vitro/in vivo evaluation. Int J Pharm 2021; 607:120963. [PMID: 34363919 DOI: 10.1016/j.ijpharm.2021.120963] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 07/10/2021] [Accepted: 07/28/2021] [Indexed: 11/30/2022]
Abstract
Chitosan and alginate are natural bioactive polymers with wound healing properties, in addition to chitosan's anti-bacterial properties. In this study, these two polymers were combined in a drug-free nanosystem with positive or negative surface charges, for the treatment of non-diabetic and diabetic pressure ulcers. Chitosan alginate nanoparticles (CA NPs) were prepared by a modified ionic gelation method. Interaction between the polymers and formation of the NPs were confirmed by Fourier-Transform infrared spectroscopy, differential scanning calorimetry and transmission electron microscopy. For in vivo study, selected CA NPs with optimum particle size, polydispersity index, positive and negative zeta potential, were evaluated for their pressure ulcers-healing effect using non-diabetic and diabetic rats. Rate of wound closure, histological examination and histomorphometric assessment were used to evaluate the CA NPs' wound healing potential. Positively and negatively charged CA NPs significantly enhanced wound closure rates, compared to control untreated group. Histological and histomorphometric analysis revealed higher quality and maturation of the formed granulation tissue, less inflammation and higher collagen content with positively charged CA NPs containing higher amount of chitosan. These results suggest that chitosan alginate nanoparticles offer a promising platform for diabetic and non-diabetic wound healing applications.
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Affiliation(s)
- Marwa M Sheir
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt.
| | - Maha M A Nasra
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt
| | - Ossama Y Abdallah
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt
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Boulais L, Jellali R, Pereira U, Leclerc E, Bencherif SA, Legallais C. Cryogel-Integrated Biochip for Liver Tissue Engineering. ACS APPLIED BIO MATERIALS 2021; 4:5617-5626. [PMID: 35006744 DOI: 10.1021/acsabm.1c00425] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Microfluidic systems and polymer hydrogels have been widely developed for tissue engineering. Yet, only a few tools combining both approaches, especially for in vitro liver models, are being explored. In this study, an alginate-based cryogel-integrated biochip was engineered for dynamic hepatoma cell line culture in three dimensions (3D). The alginate cryogel was covalently cross-linked in the biochip at subzero temperatures (T < 0 °C) to create a scaffold with high mechanical stability and an interconnected macroporous network. By varying the alginate concentration and the cross-linker ratio, Young's modulus of the cryogel can be fine-tuned between 1.5 and 29 kPa, corresponding to the range of stiffness of the different physiological states of the liver. We demonstrated that HepG2/C3A cells can be cultured and maintained as viable under dynamic conditions in this device up to 6 days. Albumin synthesis and glucose consumption increased over the cell culture days. Moreover, a 3D cell structure was observed across the entire height of the biochip, which was preserved following alginate lyase treatment to remove the cryogel-based scaffold. In summary, these results represent a proof of concept of an interesting cell culture technology that should be further investigated to engineer healthy and cirrhotic liver models.
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Affiliation(s)
- Lilandra Boulais
- Université de Technologie de Compiègne, UMR CNRS 7338 Biomécanique et Bioingénierie, Centre de Recherche de Royallieu, Compiègne 60203, France
| | - Rachid Jellali
- Université de Technologie de Compiègne, UMR CNRS 7338 Biomécanique et Bioingénierie, Centre de Recherche de Royallieu, Compiègne 60203, France
| | - Ulysse Pereira
- Université de Technologie de Compiègne, UMR CNRS 7338 Biomécanique et Bioingénierie, Centre de Recherche de Royallieu, Compiègne 60203, France
| | - Eric Leclerc
- Université de Technologie de Compiègne, UMR CNRS 7338 Biomécanique et Bioingénierie, Centre de Recherche de Royallieu, Compiègne 60203, France
| | - Sidi A Bencherif
- Université de Technologie de Compiègne, UMR CNRS 7338 Biomécanique et Bioingénierie, Centre de Recherche de Royallieu, Compiègne 60203, France.,Department of Chemical Engineering, Northeastern University, Boston, Massachusetts 02115-5005, United States.,Department of Bioengineering, Northeastern University, Boston, Massachusetts 02115-5005, United States.,Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Cécile Legallais
- Université de Technologie de Compiègne, UMR CNRS 7338 Biomécanique et Bioingénierie, Centre de Recherche de Royallieu, Compiègne 60203, France
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A A, Fletcher NL, Houston ZH, Thurecht KJ, Grøndahl L. Evaluation of the in vivo fate of ultrapure alginate in a BALB/c mouse model. Carbohydr Polym 2021; 262:117947. [PMID: 33838824 DOI: 10.1016/j.carbpol.2021.117947] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 02/17/2021] [Accepted: 03/13/2021] [Indexed: 11/26/2022]
Abstract
The linear anionic polysaccharide alginate (ALG) has been comprehensively studied for biomedical applications, yet thus far the in vivo fate of this polymer has not been explored in detail. The current study therefore evaluates the biodistribution of ultrapure ALG (M/G ratio ≥ 0.67 with a measured Mw of 530 kg/mol and polydispersity index; PDI of 1.49) over a 14-day period in BALB/c mice. The biodistribution pattern over 2-days after sample administration using PET imaging with 64Cu-labelled ALG showed liver and spleen uptake. This was confirmed by the 14-day biodistribution profile of cyanine 5-labelled ALG from in vivo and ex vivo fluorescence imaging. Using MacGreen mice confirmed the uptake of the ALG by macrophages in the spleen at the 2-day time point. This extended biodistribution study confirmed the clearance of only a portion of the administered ALG biopolymer, but also uptake by macrophage populations in the spleen over a 14-day period.
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Affiliation(s)
- Anitha A
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Nicholas L Fletcher
- Centre for Advanced Imaging (CAI), The University of Queensland, Brisbane, QLD, 4072, Australia; Australian Institute for Bioengineering & Nanotechnology (AIBN), The University of Queensland, Brisbane, QLD, 4072, Australia; ARC Centre of Excellence for Convergent Bio-Nano Science & Technology and ARC Training Centre for Innovation in Biomedical Imaging Technology, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Zachary H Houston
- Centre for Advanced Imaging (CAI), The University of Queensland, Brisbane, QLD, 4072, Australia; Australian Institute for Bioengineering & Nanotechnology (AIBN), The University of Queensland, Brisbane, QLD, 4072, Australia; ARC Centre of Excellence for Convergent Bio-Nano Science & Technology and ARC Training Centre for Innovation in Biomedical Imaging Technology, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Kristofer J Thurecht
- Centre for Advanced Imaging (CAI), The University of Queensland, Brisbane, QLD, 4072, Australia; Australian Institute for Bioengineering & Nanotechnology (AIBN), The University of Queensland, Brisbane, QLD, 4072, Australia; ARC Centre of Excellence for Convergent Bio-Nano Science & Technology and ARC Training Centre for Innovation in Biomedical Imaging Technology, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Lisbeth Grøndahl
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD, 4072, Australia; Australian Institute for Bioengineering & Nanotechnology (AIBN), The University of Queensland, Brisbane, QLD, 4072, Australia.
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12
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Hu T, Lo ACY. Collagen-Alginate Composite Hydrogel: Application in Tissue Engineering and Biomedical Sciences. Polymers (Basel) 2021; 13:1852. [PMID: 34199641 PMCID: PMC8199729 DOI: 10.3390/polym13111852] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 05/23/2021] [Accepted: 05/27/2021] [Indexed: 02/07/2023] Open
Abstract
Alginate (ALG), a polysaccharide derived from brown seaweed, has been extensively investigated as a biomaterial not only in tissue engineering but also for numerous biomedical sciences owing to its wide availability, good compatibility, weak cytotoxicity, low cost, and ease of gelation. Nevertheless, alginate lacks cell-binding sites, limiting long-term cell survival and viability in 3D culture. Collagen (Col), a major component protein found in the extracellular matrix (ECM), exhibits excellent biocompatibility and weak immunogenicity. Furthermore, collagen contains cell-binding motifs, which facilitate cell attachment, interaction, and spreading, consequently maintaining cell viability and promoting cell proliferation. Recently, there has been a growing body of investigations into collagen-based hydrogel trying to overcome the poor mechanical properties of collagen. In particular, collagen-alginate composite (CAC) hydrogel has attracted much attention due to its excellent biocompatibility, gelling under mild conditions, low cytotoxicity, controllable mechanic properties, wider availability as well as ease of incorporation of other biomaterials and bioactive agents. This review aims to provide an overview of the properties of alginate and collagen. Moreover, the application of CAC hydrogel in tissue engineering and biomedical sciences is also discussed.
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Affiliation(s)
| | - Amy C. Y. Lo
- Department of Ophthalmology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China;
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13
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Álvarez-Castillo E, Aguilar JM, Bengoechea C, López-Castejón ML, Guerrero A. Rheology and Water Absorption Properties of Alginate-Soy Protein Composites. Polymers (Basel) 2021; 13:1807. [PMID: 34072653 PMCID: PMC8197920 DOI: 10.3390/polym13111807] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 05/24/2021] [Accepted: 05/27/2021] [Indexed: 12/28/2022] Open
Abstract
Composite materials based on proteins and carbohydrates normally offer improved water solubility, biodegradability, and biocompatibility, which make them attractive for a wide range of applications. Soy protein isolate (SPI) has shown superabsorbent properties that are useful in fields such as agriculture. Alginate salts (ALG) are linear anionic polysaccharides obtained at a low cost from brown algae, displaying a good enough biocompatibility to be considered for medical applications. As alginates are quite hydrophilic, the exchange of ions from guluronic acid present in its molecular structure with divalent cations, particularly Ca2+, may induce its gelation, which would inhibit its solubilization in water. Both biopolymers SPI and ALG were used to produce composites through injection moulding using glycerol (Gly) as a plasticizer. Different biopolymer/plasticizer ratios were employed, and the SPI/ALG ratio within the biopolymer fraction was also varied. Furthermore, composites were immersed in different CaCl2 solutions to inhibit the amount of soluble matter loss and to enhance the mechanical properties of the resulting porous matrices. The main goal of the present work was the development and characterization of green porous matrices with inhibited solubility thanks to the gelation of alginate.
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Affiliation(s)
- Estefanía Álvarez-Castillo
- Departamento de Ingeniería Química, Escuela Politécnica Superior, Universidad de Sevilla, Calle Virgen de África, 7, 41011 Sevilla, Spain; (J.M.A.); (C.B.); (M.L.L.-C.); (A.G.)
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14
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Harrington S, Ott L, Karanu F, Ramachandran K, Stehno-Bittel L. A Versatile Microencapsulation Platform for Hyaluronic Acid and Polyethylene Glycol. Tissue Eng Part A 2021; 27:153-164. [PMID: 32103710 PMCID: PMC7891217 DOI: 10.1089/ten.tea.2019.0286] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Accepted: 02/14/2020] [Indexed: 12/16/2022] Open
Abstract
Cell microencapsulation is a rapidly expanding field with broad potential for stem cell therapies and tissue engineering research. Traditional alginate microspheres suffer from poor biocompatibility, and microencapsulation of more advanced hydrogels is challenging due to their slower gelation rates. We have developed a novel, noncytotoxic, nonemulsion-based method to produce hydrogel microspheres compatible with a wide variety of materials, called core-shell spherification (CSS). Fabrication of microspheres by CSS derived from two slow-hardening hydrogels, hyaluronic acid (HA) and polyethylene glycol diacrylate (PEGDA), was characterized. HA microspheres were manufactured with two different crosslinking methods: thiolation and methacrylation. Microspheres of methacrylated HA (MeHA) had the greatest swelling ratio, the largest average diameter, and the lowest diffusion barrier. In contrast, PEGDA microspheres had the smallest diameters, the lowest swelling ratio, and the highest diffusion barrier, while microspheres of thiolated HA had characteristics that were in between the other two groups. To test the ability of the hydrogels to protect cells, while promoting function, diabetic NOD mice received intraperitoneal injections of PEGDA or MeHA microencapsulated canine islets. PEGDA microspheres reversed diabetes for the length of the study (up to 16 weeks). In contrast, islets encapsulated in MeHA microspheres at the same dose restored normoglycemia, but only transiently (3-4 weeks). Nonencapsulated canine islet transplanted at the same dose did not restore normoglycemia for any length of time. In conclusion, CSS provides a nontoxic microencapsulation procedure compatible with various hydrogel types.
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Affiliation(s)
- Stephen Harrington
- Likarda LLC, Kansas City, Missouri, USA
- Department of Rehabilitation Science, University of Kansas Medical Center, Kansas City, Kansas, USA
| | | | | | | | - Lisa Stehno-Bittel
- Likarda LLC, Kansas City, Missouri, USA
- Department of Rehabilitation Science, University of Kansas Medical Center, Kansas City, Kansas, USA
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15
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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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16
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Pittermannová A, Ruberová Z, Lizoňová D, Hubatová-Vacková A, Kašpar O, ZadraŽil A, Král V, Pechar M, Pola R, Bibette J, Bremond N, Štěpánek F, Tokárová V. Functionalized hydrogel microparticles prepared by microfluidics and their interaction with tumour marker carbonic anhydrase IX. SOFT MATTER 2020; 16:8702-8709. [PMID: 32996550 DOI: 10.1039/d0sm01018a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Microfluidics allows precise control of the synthesis of microparticles for specific applications, where size and morphology play an important role. In this work, we have introduced microfluidic chip design with dedicated extraction and gelation sections allowing to prepare hydrogel particles in the size range of a red blood cell. The influence of the extractive channel size, alginate concentration and type of storage media on the final size of the prepared alginate microparticles has been discussed. The second part of the work is dedicated to the surface modification of prepared particles using chitosan, pHPMA and the monoclonal antibody molecule, IgG M75. The specific interaction of the antibody molecule with an antigen domain of carbonic anhydrase IX, the transmembrane tumour protein associated with several types of cancer, is demonstrated by fluorescence imaging and compared to an isotypic antibody molecule.
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Affiliation(s)
- A Pittermannová
- Department of Chemical Engineering, University of Chemistry and Technology, Technická 3, 166 28 Prague 6, Czech Republic. and Laboratory Colloids and Divided Matter - Chemistry, Biology and Innovation (CBI) UMR8231, ESPCI Paris, CNRS, PSL Research University, 10 rue Vauquelin, Paris, France
| | - Z Ruberová
- Department of Chemical Engineering, University of Chemistry and Technology, Technická 3, 166 28 Prague 6, Czech Republic.
| | - D Lizoňová
- Department of Chemical Engineering, University of Chemistry and Technology, Technická 3, 166 28 Prague 6, Czech Republic.
| | - A Hubatová-Vacková
- Department of Chemical Engineering, University of Chemistry and Technology, Technická 3, 166 28 Prague 6, Czech Republic.
| | - O Kašpar
- Department of Chemical Engineering, University of Chemistry and Technology, Technická 3, 166 28 Prague 6, Czech Republic.
| | - A ZadraŽil
- Department of Chemical Engineering, University of Chemistry and Technology, Technická 3, 166 28 Prague 6, Czech Republic.
| | - V Král
- Laboratory of Structural Biology, Institute of Molecular Genetics of the Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague 4, Czech Republic
| | - M Pechar
- Laboratory of Biomedical Polymers, Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského Nám. 2, 162 06 Prague 6, Czech Republic
| | - R Pola
- Laboratory of Biomedical Polymers, Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského Nám. 2, 162 06 Prague 6, Czech Republic
| | - J Bibette
- Laboratory Colloids and Divided Matter - Chemistry, Biology and Innovation (CBI) UMR8231, ESPCI Paris, CNRS, PSL Research University, 10 rue Vauquelin, Paris, France
| | - N Bremond
- Laboratory Colloids and Divided Matter - Chemistry, Biology and Innovation (CBI) UMR8231, ESPCI Paris, CNRS, PSL Research University, 10 rue Vauquelin, Paris, France
| | - F Štěpánek
- Department of Chemical Engineering, University of Chemistry and Technology, Technická 3, 166 28 Prague 6, Czech Republic.
| | - V Tokárová
- Department of Chemical Engineering, University of Chemistry and Technology, Technická 3, 166 28 Prague 6, Czech Republic.
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17
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Jung S, Song R, Kim J, Ko JH, Lee J. Controlling the Release of Amphiphilic Liposomes from Alginate Hydrogel Particles for Antifouling Paint. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:1515-1522. [PMID: 31968942 DOI: 10.1021/acs.langmuir.9b03415] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
As an alternative to the toxic antifouling paint that minimizes the adhesion force between organic molecules on large surfaces, a paint containing hydrogel particles encapsulating amphiphilic liposomes has been suggested. However, the release rate of liposomes, which is important for maximizing the antifouling performance, has not been adequately explored. We investigated the control of the release rate of liposomes encapsulated in alginate. Monodispersed alginate particles were generated using 3D-printed microfluidic devices, and their sizes were varied through the channel size, flow rate, and alginate concentration in the microfluidic devices ([Formula: see text]). The release rate of liposomes from the alginate particles was experimentally monitored under various conditions: alginate concentration, surrounding solution, and ambient fluid flow. The effects of chemical and mechanical stimuli on the effective diffusion coefficient (Deff) of amphiphilic liposomes were analyzed, and accordingly, the best production conditions for antifouling alginate particles are suggested. This study provides essential physical insights and is useful for optimizing the performance of eco-friendly antifouling paint that includes alginate particles.
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Affiliation(s)
- Sejin Jung
- School of Mechanical Engineering , Sungkyunkwan University , Suwon , Gyeonggi-do 16419 , Republic of Korea
| | - Ryungeun Song
- School of Mechanical Engineering , Sungkyunkwan University , Suwon , Gyeonggi-do 16419 , Republic of Korea
| | - Jihoon Kim
- Maritime Robotics Test and Evaluation Unit , Korea Institute of Ocean Science and Technology , Pohang , Gyeongsangbuk-do 37553 , Republic of Korea
| | - Jin Hwan Ko
- Mechanical Engineering , Jeju National University , 102 Jejudaehak-ro, Jeju-si , Jeju Special Self-Government Province 63243 , Republic of Korea
| | - Jinkee Lee
- School of Mechanical Engineering , Sungkyunkwan University , Suwon , Gyeonggi-do 16419 , Republic of Korea
- Institute for Quantum Biophysics (IQB) , Sungkyunkwan University , Suwon , Gyeonggi-do 16419 , Republic of Korea
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18
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El-Naggar ME, Othman SI, Allam AA, Morsy OM. Synthesis, drying process and medical application of polysaccharide-based aerogels. Int J Biol Macromol 2020; 145:1115-1128. [DOI: 10.1016/j.ijbiomac.2019.10.037] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 09/28/2019] [Accepted: 10/03/2019] [Indexed: 12/11/2022]
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19
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Baldwin A, Uy L, Frank-Kamenetskii A, Strizzi L, Booth BW. The in vivo biocompatibility of novel tannic acid-collagen type I injectable bead scaffold material for breast reconstruction post-lumpectomy. J Biomater Appl 2020; 34:1315-1329. [PMID: 31903835 DOI: 10.1177/0885328219899238] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Andrew Baldwin
- Department of Bioengineering, Clemson University, Clemson, SC, USA
| | - Lisa Uy
- Department of Bioengineering, Clemson University, Clemson, SC, USA
| | | | - Luigi Strizzi
- Department of Pathology, Midwestern University, Downers Grove, IL, USA
| | - Brian W Booth
- Department of Bioengineering, Clemson University, Clemson, SC, USA
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20
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Jahanbani Y, Davaran S, Ghahremani-Nasab M, Aghebati-Maleki L, Yousefi M. Scaffold-based tissue engineering approaches in treating infertility. Life Sci 2019; 240:117066. [PMID: 31738881 DOI: 10.1016/j.lfs.2019.117066] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 11/03/2019] [Accepted: 11/12/2019] [Indexed: 01/21/2023]
Abstract
Tissue engineering and the use of scaffolds have shown high therapeutic potentialities about male and female infertility. Nowadays, many couples are suffering from infertility problems. There are different causes for infertility including chemotherapy (for male and female), uterine injuries, and intrauterine adhesions. Extra-cellular matrix in tissue engineering provides a supportive medium for blood or lymphatic vessels making it a suitable substrate for cell implantation and growth. Dominant successes in this branch have been in use of patient-derived primary cells, these cells loaded in scaffolds and used to generate tissue for re-implantation. However, this method has limitations, because of the invasive nature of cell collection, also the cells patient-derived may be not healthy and become the source of disease. Therefore, use of stem cells, including embryonic stem (ES) cells, bone marrow mesenchymal stem cells (BM-MSCs) and umbilical cord-derived mesenchymal stem cells (UC-MSCs) have been considered. Cell/scaffold systems have a substantial role in fertility organs or agents repair or regeneration. This review summarizes the novel scaffold-based tissue engineering approaches to treat infertility.
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Affiliation(s)
- Yalda Jahanbani
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Soudabe Davaran
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | | | - Mehdi Yousefi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Endocrine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
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21
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Fath‐Bayati L, Ai J. Assessment of mesenchymal stem cell effect on foreign body response induced by intraperitoneally implanted alginate spheres. J Biomed Mater Res A 2019; 108:94-102. [DOI: 10.1002/jbm.a.36795] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 08/24/2019] [Accepted: 09/04/2019] [Indexed: 12/22/2022]
Affiliation(s)
- Leyla Fath‐Bayati
- Department of Tissue Engineering & Applied Cell SciencesSchool of Advanced Technologies in Medicine, Tehran University of Medical Sciences (TUMS) Tehran Iran
- Department of Tissue Engineering, School of MedicineQom University of Medical Sciences Qom Iran
| | - Jafar Ai
- Department of Tissue Engineering & Applied Cell SciencesSchool of Advanced Technologies in Medicine, Tehran University of Medical Sciences (TUMS) Tehran Iran
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22
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Hoveizi E, Tavakol S, Shirian S, Sanamiri K. Electrospun Nanofibers for Diabetes: Tissue Engineering and Cell-Based Therapies. Curr Stem Cell Res Ther 2019; 14:152-168. [PMID: 30338744 DOI: 10.2174/1574888x13666181018150107] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 03/11/2018] [Accepted: 09/05/2018] [Indexed: 02/08/2023]
Abstract
Diabetes mellitus is an autoimmune disease which causes loss of insulin secretion producing hyperglycemia by promoting progressive destruction of pancreatic β cells. An ideal therapeutic approach to manage diabetes mellitus is pancreatic β cells replacement. The aim of this review article was to evaluate the role of nanofibrous scaffolds and stem cells in the treatment of diabetes mellitus. Various studies have pointed out that application of electrospun biomaterials has considerably attracted researchers in the field of tissue engineering. The principles of cell therapy for diabetes have been reviewed in the first part of this article, while the usability of tissue engineering as a new therapeutic approach is discussed in the second part.
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Affiliation(s)
- Elham Hoveizi
- Department of Biology, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran.,Stem Cells and Transgenic Technology Research Center (STTRC), Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Shima Tavakol
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Sadegh Shirian
- Department of Pathology, School of Veterinary Medicine, Shahrekord University, Shahrekord, Iran.,Shiraz Molecular Research Center, Dr. Daneshbod Pathology Lab, Shiraz, Iran
| | - Khadije Sanamiri
- Department of Animal Biology, Faculty of Biological Sciences, Kharazmi University, Tehran, Iran
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23
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Roopan SM, Devi Priya D, Shanavas S, Acevedo R, Al-Dhabi NA, Arasu MV. CuO/C nanocomposite: Synthesis and optimization using sucrose as carbon source and its antifungal activity. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 101:404-414. [PMID: 31029334 DOI: 10.1016/j.msec.2019.03.105] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Revised: 03/24/2019] [Accepted: 03/28/2019] [Indexed: 12/27/2022]
Abstract
The synthesis of bioactive CuO/C nano composite using sucrose as a capping agent is achieved through simple green approach via Response Surface Methodology. The synthesis process was done in a green environment which prevents aggregation of sucrose and promotes nanoparticles formation. The innovative approach produces sucrose as a carbon source mediated copper oxide nanocomposites (CuO/C nanocomposite) with the particle size of 50 nm. Additionally, the produced CuO/C nanocomposite were characterized using microscopic techniques like SEM, TEM and spectroscopic techniques like UV-vis and X-ray diffraction. The antifungal activities of CuO/C nanocomposite were tested against Aspergillus niger and Aspergillus flavus species. At 1000 ppm of CuO/C nanocomposite, it showed 70% restraint on A. flavus and 90% hindrance on A. niger. The fungal inhibition mechanism of bioactive CuO/C nanocomposite was discussed in this research article. The particular high antifungal performance of CuO/C nanocomposite was found against Aspergillus niger while compare to Aspergillus flavus fungal strain.
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Affiliation(s)
- Selvaraj Mohana Roopan
- Chemistry of Heterocycles & Natural Product Research Laboratory, Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore, 632 014, Tamilnadu, India.
| | - D Devi Priya
- Chemistry of Heterocycles & Natural Product Research Laboratory, Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore, 632 014, Tamilnadu, India
| | - S Shanavas
- Nano and Hybrid Materials Laboratory, Department of Physics, Periyar University, Salem 636 011, India
| | - R Acevedo
- Facultad de Ingeniería y Tecnología, Universidad San Sebastián, Bellavista 7, Santiago 8420524, Chile
| | - Naif Abdullah Al-Dhabi
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Mariadhas Valan Arasu
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
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24
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Chen Y, Zhou Y, Liu W, Pi H, Zeng G. POSS Hybrid Robust Biomass IPN Hydrogels with Temperature Responsiveness. Polymers (Basel) 2019; 11:E524. [PMID: 30960509 PMCID: PMC6473450 DOI: 10.3390/polym11030524] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 03/15/2019] [Accepted: 03/15/2019] [Indexed: 11/25/2022] Open
Abstract
In order to improve the performance of traditional sodium alginate (SA) hydrogels cross-linked by Ca2+ ions to meet greater application demand, a strategy was designed to structure novel SA-based gels (named OP-PN gels) to achieve both stimulus responsiveness and improved mechanical strength. In this strategy, the SA chains are co-cross-linked by CaCl₂ and cationic octa-ammonium polyhedral oligomeric silsesquioxane (Oa-POSS) particles as the first network, and an organically cross-linked poly(N-isopropyl acrylamide) (PNIPA) network is introduced into the gels as the second network. Several main results are obtained from the synthesis and characterization of the gels. For OP-PN gels, their properties depend on the content of both uniformly dispersed Oa-POSS and PNIPA network directly. The increased Oa-POSS and PNIPA network content significantly improves both the strength and resilience of gels. Relatively, the increased Oa-POSS is greatly beneficial to the modulus of gels, and the increased PNIPA network is more favorable to advancing the tensile deformation of gels. The gels with hydrophilic PNIPA network exhibit better swelling ability and remarkable temperature responsiveness, and their volume phase transition temperature can be adjusted by altering the content of Oa-POSS. The deswelling rate of gels increases gradually with the increase of POSS content due to the hydrophobic Si⁻O skeleton of POSS. Moreover, the enhanced drug loading and sustained release ability of the target drug bovine serum albumin displays great potential for this hybrid gel in the biomedical field.
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Affiliation(s)
- Yi Chen
- Hunan Provincial Key Laboratory of Comprehensive Utilization of Agricultural and Animal Husbandry Waste Resources, College of Urban and Environmental Sciences, Hunan University of Technology, Zhuzhou 412007, China.
- Hunan Provincial Engineering Laboratory of Key Technique of Non-metallic Packaging Waste Resources Utilization, Hunan University of Technology, Zhuzhou 412007, China.
| | - Yueyun Zhou
- Hunan Provincial Key Laboratory of Comprehensive Utilization of Agricultural and Animal Husbandry Waste Resources, College of Urban and Environmental Sciences, Hunan University of Technology, Zhuzhou 412007, China.
| | - Wenyong Liu
- Hunan Provincial Engineering Laboratory of Key Technique of Non-metallic Packaging Waste Resources Utilization, Hunan University of Technology, Zhuzhou 412007, China.
- Hunan Provincial Key Laboratory of Biomass Fiber Functional Materials, Hunan University of Technology, Zhuzhou 412007, China.
| | - Hejie Pi
- Hunan Provincial Key Laboratory of Comprehensive Utilization of Agricultural and Animal Husbandry Waste Resources, College of Urban and Environmental Sciences, Hunan University of Technology, Zhuzhou 412007, China.
| | - Guangsheng Zeng
- Hunan Provincial Engineering Laboratory of Key Technique of Non-metallic Packaging Waste Resources Utilization, Hunan University of Technology, Zhuzhou 412007, China.
- Hunan Provincial Key Laboratory of Biomass Fiber Functional Materials, Hunan University of Technology, Zhuzhou 412007, China.
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25
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Soorbaghi FP, Isanejad M, Salatin S, Ghorbani M, Jafari S, Derakhshankhah H. Bioaerogels: Synthesis approaches, cellular uptake, and the biomedical applications. Biomed Pharmacother 2019; 111:964-975. [PMID: 30841476 DOI: 10.1016/j.biopha.2019.01.014] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Revised: 01/01/2019] [Accepted: 01/05/2019] [Indexed: 12/15/2022] Open
Abstract
Aerogels are a class of porous structures with promising physicochemical properties. Among aerogels with various origins, polysaccharide aerogels (e.g., cellulose, chitosan, alginate, starch, agar, and so on) have received more attention. This group of aerogels can be classified as bioaerogels, which are originated from natural, semi-synthetic, and synthetic sources with exceptional biomedical applications. This review focuses on bioaerogels from the viewpoints of synthesis approaches, cellular uptake, toxicity, biodegradability, and the biomedical application perspectives.
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Affiliation(s)
- Fatemeh Pashaei Soorbaghi
- Polymer Engineering Department, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, Iran; Andishehpardazan Avin Co., Tehran, Iran
| | | | - Sara Salatin
- Department of Pharmaceutical Nanotechnology, Faculty of Pharmacy, Tabriz University of Medical Science, Tabriz, Iran; Student Research Committee, Tabriz University of Medical Science, Tabriz, Iran
| | - Milad Ghorbani
- Department of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Samira Jafari
- Pharmaceutical Sciences Research Center, School of Pharmacy, Kermanshah University of Medical Sciences, Kermanshah, Iran.
| | - Hossein Derakhshankhah
- Pharmaceutical Sciences Research Center, School of Pharmacy, Kermanshah University of Medical Sciences, Kermanshah, Iran.
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27
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Abhilash MR, Gangadhar A, Krishnegowda J, Chikkamadaiah M, Srikantaswamy S. Hydrothermal synthesis, characterization and enhanced photocatalytic activity and toxicity studies of a rhombohedral Fe2O3nanomaterial. RSC Adv 2019; 9:25158-25169. [PMID: 35528652 PMCID: PMC9069891 DOI: 10.1039/c9ra04978a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 08/02/2019] [Indexed: 11/21/2022] Open
Abstract
The present investigation focuses on the synthesis of metal oxide nanoparticles (MONPs)viaa facile hydrothermal route.
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Affiliation(s)
| | - Akshatha Gangadhar
- Department of Studies in Environmental Science
- University of Mysore
- Mysore 570006
- India
- Centre for Materials Science and Technology
| | - Jagadish Krishnegowda
- Department of Studies in Environmental Science
- University of Mysore
- Mysore 570006
- India
- Centre for Materials Science and Technology
| | | | - Shivanna Srikantaswamy
- Department of Studies in Environmental Science
- University of Mysore
- Mysore 570006
- India
- Centre for Materials Science and Technology
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28
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Bracaglia LG, Winston S, Powell DA, Fisher JP. Synthetic polymer coatings diminish chronic inflammation risk in large ECM-based materials. J Biomed Mater Res A 2018; 107:494-504. [DOI: 10.1002/jbm.a.36564] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 09/28/2018] [Accepted: 10/09/2018] [Indexed: 12/25/2022]
Affiliation(s)
- Laura G. Bracaglia
- Fischell Department of Bioengineering; University of Maryland; College Park Maryland
- Center for Engineering Complex Tissues; University of Maryland; College Park Maryland
| | - Shira Winston
- Fischell Department of Bioengineering; University of Maryland; College Park Maryland
- Center for Engineering Complex Tissues; University of Maryland; College Park Maryland
| | - Douglas A. Powell
- Department of Laboratory Animal Resources; University of Maryland; College Park Maryland
| | - John P. Fisher
- Fischell Department of Bioengineering; University of Maryland; College Park Maryland
- Center for Engineering Complex Tissues; University of Maryland; College Park Maryland
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29
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Toma CC, Aloisi A, Bordoni V, Di Corato R, Rauner M, Cuniberti G, Delogu LG, Rinaldi R. Immune Profiling of Polysaccharide Submicron Vesicles. Biomacromolecules 2018; 19:3560-3571. [DOI: 10.1021/acs.biomac.8b00832] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Chiara C. Toma
- CNR-NANO (ECMT) Institute of Nanoscience,
Via Arnesano, 73100 Lecce, Italy
| | - Alessandra Aloisi
- CNR-IMM Institute for Microelectronics and Microsystems, Via Monteroni, University Campus, A3 Building, 73100 Lecce, Italy
- CNR-NANO (ECMT) Institute of Nanoscience,
Via Arnesano, 73100 Lecce, Italy
| | - Valentina Bordoni
- Department of Chemistry and Pharmacy, University of Sassari, via Muroni 23, 07100 Sassari, Italy
| | | | | | | | - Lucia G. Delogu
- Department of Chemistry and Pharmacy, University of Sassari, via Muroni 23, 07100 Sassari, Italy
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, via Licio Giorgeri 1, 34134 Trieste, Italy
- Fondazione Istituto di Ricerca Pediatrica Città della Speranza, corso Stati Uniti 4 35127 Padova, Italy
| | - Rosaria Rinaldi
- CNR-IMM Institute for Microelectronics and Microsystems, Via Monteroni, University Campus, A3 Building, 73100 Lecce, Italy
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30
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Diekmann S, Glöckner P, Bader A. The Influence of Different Cultivation Conditions on the Metabolic Functionality of Encapsulated Primary Hepatocytes. Int J Artif Organs 2018; 30:192-8. [PMID: 17417757 DOI: 10.1177/039139880703000303] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The clinical application of bioartificial liver support systems (BALS) is still limited because of technical problems associated with the storage, transport and scale-up of common systems. The encapsulation of primary hepatocytes could solve these problems since the scale-up depends only on the number of the beads and encapsulation leads to protection of the cells during the process of freezing and thawing. Many efforts have been made to find an appropriate material for the encapsulation of primary hepatocytes in terms of mechanical resistance as well as appropriate bio- and hemo-compatibility This study focuses on the improvement of the metabolic functionality of encapsulated primary hepatocytes. A comparison between two different cultivation models showed that dynamic cultivation conditions lead to a 20.4-fold increase in the albumin production and a 5.21-fold increase in the urea synthesis of encapsulated hepatocytes. Furthermore, the influence of different ratios of the number of the cells to the volume of the media was analyzed. Encapsulated hepatocytes cultured with a high amount of medium were characterized by a significantly higher metabolic activity compared to encapsulated hepatocytes cultured with a low level of medium. Interestingly, the cell concentration per mL alginate has no significant influence on the metabolic activity of encapsulated hepatocytes. In conclusion, different optimization strategies are discussed and, finally, the functionality of encapsulated hepatocytes is compared to the standard model of hepatocyte culture, the collagen sandwich.
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Affiliation(s)
- S Diekmann
- Biotechnological-Biomedical Center, Cell Techniques and Applied Stem Cell Biology, University of Leipzig, Deutscher Platz 5, 04103 Leipzig, Germany.
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31
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Abstract
The principle of immunoisolation of cells is based on encapsulation of cells in immunoprotective but semipermeable membranes that protect cells from hazardous effects of the host immune system but allows ingress of nutrients and outgress of therapeutic molecules. The technology was introduced in 1933 but has only received its deserved attention for its therapeutic application for three decades now.In the past decade important advances have been made in creating capsules that provoke minimal or no inflammatory responses. There are however new emerging challenges. These challenges relate to optimal nutrition and oxygen supply as well as standardization and documentation of capsule properties.It is concluded that the proof of principle of applicability of encapsulated grafts for treatment of human disease has been demonstrated and merits optimism about its clinical potential. Further innovation requires a much more systematic approach in identifying crucial properties of capsules and cellular grafts to allow sound interpretations of the results.
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Affiliation(s)
- Paul de Vos
- Division of Immuno-Endocrinology, Departments of Pathology and Laboratory Medicine, University of Groningen, Groningen, Groningen, The Netherlands.
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32
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Kirillova A, Maxson R, Stoychev G, Gomillion CT, Ionov L. 4D Biofabrication Using Shape-Morphing Hydrogels. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1703443. [PMID: 29024044 DOI: 10.1002/adma.201703443] [Citation(s) in RCA: 182] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 09/05/2017] [Indexed: 06/07/2023]
Abstract
Despite the tremendous potential of bioprinting techniques toward the fabrication of highly complex biological structures and the flourishing progress in 3D bioprinting, the most critical challenge of the current approaches is the printing of hollow tubular structures. In this work, an advanced 4D biofabrication approach, based on printing of shape-morphing biopolymer hydrogels, is developed for the fabrication of hollow self-folding tubes with unprecedented control over their diameters and architectures at high resolution. The versatility of the approach is demonstrated by employing two different biopolymers (alginate and hyaluronic acid) and mouse bone marrow stromal cells. Harnessing the printing and postprinting parameters allows attaining average internal tube diameters as low as 20 µm, which is not yet achievable by other existing bioprinting/biofabrication approaches and is comparable to the diameters of the smallest blood vessels. The proposed 4D biofabrication process does not pose any negative effect on the viability of the printed cells, and the self-folded hydrogel-based tubes support cell survival for at least 7 d without any decrease in cell viability. Consequently, the presented 4D biofabrication strategy allows the production of dynamically reconfigurable architectures with tunable functionality and responsiveness, governed by the selection of suitable materials and cells.
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Affiliation(s)
- Alina Kirillova
- College of Engineering, University of Georgia, Athens, GA, 30602, USA
| | - Ridge Maxson
- College of Engineering, University of Georgia, Athens, GA, 30602, USA
| | - Georgi Stoychev
- College of Engineering, University of Georgia, Athens, GA, 30602, USA
| | | | - Leonid Ionov
- College of Engineering, University of Georgia, Athens, GA, 30602, USA
- College of Family and Consumer Sciences, University of Georgia, Athens, GA, 30602, USA
- Faculty of Engineering Science, University of Bayreuth, Universitätsstr. 30, 95440, Bayreuth, Germany
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33
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Safaei M, Taran M. Optimized synthesis, characterization, and antibacterial activity of an alginate-cupric oxide bionanocomposite. J Appl Polym Sci 2017. [DOI: 10.1002/app.45682] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Mohsen Safaei
- Department of Nanobiotechnology; Faculty of Science, Razi University; Kermanshah Iran
| | - Mojtaba Taran
- Department of Nanobiotechnology; Faculty of Science, Razi University; Kermanshah Iran
- Microbiology Laboratory; Department of Biology, Faculty of Science, Razi University; Kermanshah Iran
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34
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Ching SH, Bansal N, Bhandari B. Alginate gel particles-A review of production techniques and physical properties. Crit Rev Food Sci Nutr 2017; 57:1133-1152. [PMID: 25976619 DOI: 10.1080/10408398.2014.965773] [Citation(s) in RCA: 289] [Impact Index Per Article: 41.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The application of hydrocolloid gel particles is potentially useful in food, chemical, and pharmaceutical industries. Alginate gel particles are one of the more commonly used hydrocolloid gel particles due to them being biocompatible, nontoxic, biodegradable, cheap, and simple to produce. They are particularly valued for their application in encapsulation. Encapsulation in alginate gel particles confers protective benefits to cells, DNA, nutrients, and microbes. Slow release of flavors, minerals, and drugs can also be achieved by encapsulation in gel particles. The particle size and shape of the gel particles are crucial for specific applications. In this review, current methods of producing alginate gel particles will be discussed, taking into account their advantages, disadvantages, scalability, and impact on particle size. The physical properties of alginate gel particles will determine the effectiveness in different application conditions. This review will cover the current understanding of the alginate biopolymer, gelation mechanisms and factors affecting release properties, gel strength, and rheology of the alginate gel particle systems.
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Affiliation(s)
- Su Hung Ching
- a School of Agriculture and Food Sciences, The University of Queensland , Brisbane , Queensland , Australia
| | - Nidhi Bansal
- a School of Agriculture and Food Sciences, The University of Queensland , Brisbane , Queensland , Australia
| | - Bhesh Bhandari
- a School of Agriculture and Food Sciences, The University of Queensland , Brisbane , Queensland , Australia
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35
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Xie X, Zhang W, Abbaspourrad A, Ahn J, Bader A, Bose S, Vegas A, Lin J, Tao J, Hang T, Lee H, Iverson N, Bisker G, Li L, Strano MS, Weitz DA, Anderson DG. Microfluidic Fabrication of Colloidal Nanomaterials-Encapsulated Microcapsules for Biomolecular Sensing. NANO LETTERS 2017; 17:2015-2020. [PMID: 28152589 DOI: 10.1021/acs.nanolett.7b00026] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Implantable sensors that detect biomarkers in vivo are critical for early disease diagnostics. Although many colloidal nanomaterials have been developed into optical sensors to detect biomolecules in vitro, their application in vivo as implantable sensors is hindered by potential migration or clearance from the implantation site. One potential solution is incorporating colloidal nanosensors in hydrogel scaffold prior to implantation. However, direct contact between the nanosensors and hydrogel matrix has the potential to disrupt sensor performance. Here, we develop a hollow-microcapsule-based sensing platform that protects colloidal nanosensors from direct contact with hydrogel matrix. Using microfluidics, colloidal nanosensors were encapsulated in polyethylene glycol microcapsules with liquid cores. The microcapsules selectively trap the nanosensors within the core while allowing free diffusion of smaller molecules such as glucose and heparin. Glucose-responsive quantum dots or gold nanorods or heparin-responsive gold nanorods were each encapsulated. Microcapsules loaded with these sensors showed responsive optical signals in the presence of target biomolecules (glucose or heparin). Furthermore, these microcapsules can be immobilized into biocompatible hydrogel as implantable devices for biomolecular sensing. This technique offers new opportunities to extend the utility of colloidal nanosensors from solution-based detection to implantable device-based detection.
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Affiliation(s)
- Xi Xie
- The First Affiliated Hospital, School of Electronics and Information Technology, Sun Yat-Sen University , Guangzhou 510275, China
| | - Weixia Zhang
- School of Engineering and Applied Sciences, Department of Physics, Harvard University , Cambridge, Massachusetts 02138, United States
| | - Alireza Abbaspourrad
- School of Engineering and Applied Sciences, Department of Physics, Harvard University , Cambridge, Massachusetts 02138, United States
- Department of Food Science, Cornell University , Ithaca, New York 14853, United States
| | | | | | | | | | | | - Jun Tao
- The First Affiliated Hospital, School of Electronics and Information Technology, Sun Yat-Sen University , Guangzhou 510275, China
| | - Tian Hang
- The First Affiliated Hospital, School of Electronics and Information Technology, Sun Yat-Sen University , Guangzhou 510275, China
| | - Hyomin Lee
- School of Engineering and Applied Sciences, Department of Physics, Harvard University , Cambridge, Massachusetts 02138, United States
| | | | | | | | | | - David A Weitz
- School of Engineering and Applied Sciences, Department of Physics, Harvard University , Cambridge, Massachusetts 02138, United States
| | - Daniel G Anderson
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
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36
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Bajpai SK, Shah FF, Bajpai M. Dynamic release of gentamicin sulfate (GS) from alginate dialdehyde (AD)-crosslinked casein (CAS) films for antimicrobial applications. Des Monomers Polym 2016; 20:18-32. [PMID: 29491776 PMCID: PMC5812178 DOI: 10.1080/15685551.2016.1231037] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2016] [Accepted: 08/29/2016] [Indexed: 10/25/2022] Open
Abstract
In the present work, antibiotic drug gentamicin sulfate (GS) has been loaded into alginate dialdehyde-crosslinked casein (CAS) films for wound dressing applications. The films have been characterized by Fourier transform infrared spectroscopy, X-ray diffraction analysis and scanning electron microscopy. The dynamic release of model drug GS has been investigated in the physiological fluid at 37 °C. The drug release data has been interpreted in the terms of various kinetic models such as Power function model, first order model and Schott model. The release data was found to be well fitted by Schott model. The various diffusion coefficients are also evaluated. The adsorption of model therapeutic protein BSA on the film has been investigated. The maximum adsorption is found to be 5.7 mg/cm2.The films were tested for their antibacterial and anti-fungal action. Finally, the in vivo wound healing study was carried out on Albino wistar rats.
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Affiliation(s)
- S. K. Bajpai
- Polymer Research Laboratory, Department of Chemistry, Govt. Model Science College, Jabalpur, India
| | - Farhan Ferooz Shah
- Polymer Research Laboratory, Department of Chemistry, Govt. Model Science College, Jabalpur, India
| | - M. Bajpai
- Polymer Research Laboratory, Department of Chemistry, Govt. Model Science College, Jabalpur, India
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37
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Stilhano RS, Madrigal JL, Wong K, Williams PA, Martin PK, Yamaguchi FS, Samoto VY, Han SW, Silva EA. Injectable alginate hydrogel for enhanced spatiotemporal control of lentivector delivery in murine skeletal muscle. J Control Release 2016; 237:42-9. [DOI: 10.1016/j.jconrel.2016.06.047] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 06/17/2016] [Accepted: 06/29/2016] [Indexed: 12/17/2022]
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38
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Sondermeijer HP, Witkowski P, Woodland D, Seki T, Aangenendt FJ, van der Laarse A, Itescu S, Hardy MA. Optimization of alginate purification using polyvinylidene difluoride membrane filtration: Effects on immunogenicity and biocompatibility of three-dimensional alginate scaffolds. J Biomater Appl 2016; 31:510-520. [PMID: 27114440 DOI: 10.1177/0885328216645952] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Sodium alginate is an effective biomaterial for tissue engineering applications. Non-purified alginate is contaminated with protein, lipopolysaccharide, DNA, and RNA, which could elicit adverse immunological reactions. We developed a purification protocol to generate biocompatible alginate based on (a) activated charcoal treatment, (b) use of hydrophobic membrane filtration (we used hydrophobic polyvinylidene difluoride membranes to remove organic contaminants), (c) dialysis, and finally (d) ethanol precipitation. Using this approach, we could omit pre-treatment with chloroform and significantly reduce the quantities of reagents used. Purification resulted in reduction of residual protein by 70% down to 0.315 mg/g, DNA by 62% down to 1.28 µg/g, and RNA by 61% down to less than 10 µg/g, respectively. Lipopolysaccharide levels were reduced by >90% to less than 125 EU/g. Purified alginate did not induce splenocyte proliferation in vitro. Three-dimensional scaffolds generated from purified alginate did not elicit a significant foreign body reaction, fibrotic overgrowth, or macrophage infiltration 4 weeks after implantation. This study describes a simplified and economical alginate purification method that results in alginate purity, which meets clinically useful criteria.
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Affiliation(s)
- Hugo P Sondermeijer
- Department of Surgery, Columbia University Medical Center, USA Department of Physiology, Maastricht University Medical Center, The Netherlands
| | - Piotr Witkowski
- Department of Surgery, Columbia University Medical Center, USA Department of Surgery, Section of Transplantation, University of Chicago Medicine, USA
| | - David Woodland
- Department of Surgery, Columbia University Medical Center, USA
| | - Tetsunori Seki
- Department of Surgery, Columbia University Medical Center, USA
| | - Frank J Aangenendt
- Department of Mechanical Engineering, Eindhoven University of Technology, The Netherlands
| | - Arnoud van der Laarse
- Departments of Cardiology and Clinical Chemistry and Laboratory Medicine, Leiden University Medical Center, The Netherlands
| | - Silviu Itescu
- Department of Surgery, Columbia University Medical Center, USA Mesoblast Limited, Melbourne, Australia
| | - Mark A Hardy
- Department of Surgery, Columbia University Medical Center, USA
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39
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Saltz A, Kandalam U. Mesenchymal stem cells and alginate microcarriers for craniofacial bone tissue engineering: A review. J Biomed Mater Res A 2016; 104:1276-84. [PMID: 26826060 DOI: 10.1002/jbm.a.35647] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Revised: 12/29/2015] [Accepted: 01/07/2016] [Indexed: 01/01/2023]
Abstract
Craniofacial bone is a complex structure with an intricate anatomical and physiological architecture. The defects that exist in this region therefore require a precise control of osteogenesis in their reconstruction. Unlike traditional surgical intervention, tissue engineering techniques mediate bone development with limited postoperative risk and cost. Alginate stands as the premier polymer in bone repair because of its mild ionotropic gelation and excellent biocompatibility, biodegradability, and injectability. Alginate microcarriers are candidates of choice to mediate cells and accommodate into 3-D environment. Several studies reported the use of alginate microcarriers for delivering cells, drugs, and growth factors. This review will explore the potential use of alginate microcarrier for stem cell systems and its application in craniofacial bone tissue engineering.
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Affiliation(s)
- Adam Saltz
- Nova Southeastern University College of Dental Medicine, Fort Lauderdale, Florida, 33328
| | - Umadevi Kandalam
- Nova Southeastern University College of Dental Medicine, Fort Lauderdale, Florida, 33328
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40
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Kondaveeti S, Cornejo DR, Petri DFS. Alginate/magnetite hybrid beads for magnetically stimulated release of dopamine. Colloids Surf B Biointerfaces 2015; 138:94-101. [PMID: 26674837 DOI: 10.1016/j.colsurfb.2015.11.058] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Revised: 11/16/2015] [Accepted: 11/27/2015] [Indexed: 10/22/2022]
Abstract
Hybrid beads composed of magnetite nanoparticles (MNP) and alginate (Alg) were synthesized and coded as Alg-MNP. They were incubated in dopamine (DOPA) solution (5 g/L), at pH 7.4 and 8 °C, during 12 h, promoting the DOPA loaded magnetic beads, coded as Alg-MNP/DOPA. The release of DOPA was further evaluated in the absence and the presence of external magnetic field (EMF) of 0.4 T. The products Alg-MNP and Alg-MNP/DOPA were characterized by scanning electron microscopy with energy dispersive spectroscopy (SEM-EDS), Fourier transform infrared vibrational spectroscopy (FTIR), UV spectrophotometry, thermogravimetric analyses (TGA), inductively coupled plasma atomic emission spectroscopy (ICP-AES) analyses and superconducting quantum interference device (SQUID) magnetometer. The magnetic and chemical properties of Alg-MNP beads were not affected by DOPA loading. The incorporation of DOPA into the beads depended on the pH and on the negative charge density. At pH 7.4 38% of DOPA were loaded into Alg-MNP beads, whereas at pH 2 or using neat Alg beads (lower charge density than Alg-MNP) the loading efficiency decreased to one third or less. In the absence of EMF, 24% of the loaded DOPA was released from Alg-MNP at pH 7.4 over a period of 26 h. The released amount increased to 33% under the stimulus of EMF. A model was proposed to explain the loading efficiency of charged drugs, as DOPA, into hybrid beads and the role played by EMF on delivery systems, where drug and matrix are oppositely charged. The results suggest that the alginate combined with magnetite nanoparticles is a promising system for release of DOPA in the presence of EMF.
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Affiliation(s)
- Stalin Kondaveeti
- Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes 748, 05508-000, São Paulo, Brazil
| | - Daniel R Cornejo
- Instituto de Física, Universidade de São Paulo, São Paulo, Brazil
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41
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Bruchet M, Melman A. Fabrication of patterned calcium cross-linked alginate hydrogel films and coatings through reductive cation exchange. Carbohydr Polym 2015; 131:57-64. [DOI: 10.1016/j.carbpol.2015.05.021] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2015] [Revised: 04/29/2015] [Accepted: 05/05/2015] [Indexed: 10/23/2022]
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42
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Injectable hydrogels derived from phosphorylated alginic acid calcium complexes. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 51:139-47. [DOI: 10.1016/j.msec.2015.02.031] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Revised: 01/28/2015] [Accepted: 02/23/2015] [Indexed: 01/12/2023]
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43
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Campanha-Rodrigues AL, Grazioli G, Oliveira TC, Campos-Lisbôa ACV, Mares-Guia TR, Sogayar MC. Therapeutic Potential of Laminin–Biodritin Microcapsules for Type 1 Diabetes Mellitus. Cell Transplant 2015; 24:247-61. [DOI: 10.3727/096368913x675160] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Pancreatic islet microencapsulation constitutes an attractive therapy for type 1 diabetes mellitus; however, long-term β-cell function remains a major problem. Loss of extracellular matrix interactions during islet isolation dramatically affects β-cell viability. We have previously shown beneficial effects of laminin (LN) in human islet cultures. Herein, we investigated whether LN could improve the outcome of transplantation after islet microencapsulation in Biodritin, an alginate-based material. To test LN-Biodritin stability, microcapsules were subjected to different types of in vitro stress. Focusing on biocompatibility, empty microcapsules were coincubated with the RAW 264.7 macrophage cell line for up to 24 h, and empty beads were implanted IP in mice and retrieved for analyses after 7 and 30 days. Upon culturing for 48 h, mRNA, protein levels, and caspase 3 activity were evaluated in islets microencapsulated with LN-Biodritin. Mice rendered diabetic by streptozotocin injection were transplanted with microencapsulated islets, followed by assessment of body weight, glycemia, and graft function (evaluated by OGTT). Graft efficiency was observed upon microencapsulated islet explantation. The results obtained showed that LN-Biodritin microcapsules were as stable and biocompatible as Biodritin. Modulation of mRNA and protein levels suggested protection against apoptosis and islet stress. Mice transplanted with LN-Biodritin microencapsulated islets presented a better outcome at 198 days postsurgery. Graft explantation led animals to hyperglycemia. In conclusion, LN-Biodritin constitutes a very promising biomaterial for islet transplantation.
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Affiliation(s)
- Ana Lucia Campanha-Rodrigues
- Chemistry Institute, Biochemistry Department, Cell and Molecular Therapy Center (NUCEL/NETCEM), School of Medicine, University of São Paulo, São Paulo, SP, Brazil
| | - Gisella Grazioli
- Chemistry Institute, Biochemistry Department, Cell and Molecular Therapy Center (NUCEL/NETCEM), School of Medicine, University of São Paulo, São Paulo, SP, Brazil
- Cell Protect Biotechnology Ltda., São Paulo, SP, Brazil
| | - Talita C. Oliveira
- Chemistry Institute, Biochemistry Department, Cell and Molecular Therapy Center (NUCEL/NETCEM), School of Medicine, University of São Paulo, São Paulo, SP, Brazil
| | - Ana Carolina V. Campos-Lisbôa
- Chemistry Institute, Biochemistry Department, Cell and Molecular Therapy Center (NUCEL/NETCEM), School of Medicine, University of São Paulo, São Paulo, SP, Brazil
- Cell Protect Biotechnology Ltda., São Paulo, SP, Brazil
| | - Thiago R. Mares-Guia
- Chemistry Institute, Biochemistry Department, Cell and Molecular Therapy Center (NUCEL/NETCEM), School of Medicine, University of São Paulo, São Paulo, SP, Brazil
- Cell Protect Biotechnology Ltda., São Paulo, SP, Brazil
| | - Mari C. Sogayar
- Chemistry Institute, Biochemistry Department, Cell and Molecular Therapy Center (NUCEL/NETCEM), School of Medicine, University of São Paulo, São Paulo, SP, Brazil
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44
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Yang EY, Kronenfeld JP, Stabler CL. Engineering biomimetic materials for islet transplantation. Curr Diabetes Rev 2015; 11:163-9. [PMID: 25776871 PMCID: PMC4447569 DOI: 10.2174/1573399811666150317130440] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Revised: 02/23/2015] [Accepted: 02/24/2015] [Indexed: 12/30/2022]
Abstract
A closed-loop system that provides both the sensing of glucose and the appropriate dosage of insulin could dramatically improve treatment options for insulin-dependent diabetics. The intrahepatic implantation of allogeneic islets has the potential to provide this intimate control, by transplanting the very cells that have this inherent sensing and secretion capacity. Limiting islet transplantation, however, is the significant loss and dysfunction of islets following implantation, due to the poor engraftment environment and significant immunological attack. In this review, we outline approaches that seek to address these challenges via engineering biomimetic materials. These materials can serve to mimic natural processes that work toward improving engraftment, minimizing inflammation, and directing immunological responses. Biomimetic materials can serve to house cells, recapitulate native microenvironments, release therapeutic agents in a physiological manner, and/or present agents to direct cells towards desired responses. By integrating these approaches, superior platforms capable of improving long-term engraftment and acceptance of transplanted islets are on the horizon.
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Affiliation(s)
| | | | - Cherie L Stabler
- Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA.
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Jia J, Richards DJ, Pollard S, Tan Y, Rodriguez J, Visconti RP, Trusk TC, Yost MJ, Yao H, Markwald RR, Mei Y. Engineering alginate as bioink for bioprinting. Acta Biomater 2014; 10:4323-31. [PMID: 24998183 PMCID: PMC4350909 DOI: 10.1016/j.actbio.2014.06.034] [Citation(s) in RCA: 302] [Impact Index Per Article: 30.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Revised: 06/06/2014] [Accepted: 06/20/2014] [Indexed: 10/25/2022]
Abstract
Recent advances in three-dimensional (3-D) printing offer an excellent opportunity to address critical challenges faced by current tissue engineering approaches. Alginate hydrogels have been used extensively as bioinks for 3-D bioprinting. However, most previous research has focused on native alginates with limited degradation. The application of oxidized alginates with controlled degradation in bioprinting has not been explored. Here, a collection of 30 different alginate hydrogels with varied oxidation percentages and concentrations was prepared to develop a bioink platform that can be applied to a multitude of tissue engineering applications. The authors systematically investigated the effects of two key material properties (i.e. viscosity and density) of alginate solutions on their printabilities to identify a suitable range of material properties of alginates to be applied to bioprinting. Further, four alginate solutions with varied biodegradability were printed with human adipose-derived stem cells (hADSCs) into lattice-structured, cell-laden hydrogels with high accuracy. Notably, these alginate-based bioinks were shown to be capable of modulating proliferation and spreading of hADSCs without affecting the structure integrity of the lattice structures (except the highly degradable one) after 8days in culture. This research lays a foundation for the development of alginate-based bioink for tissue-specific tissue engineering applications.
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Affiliation(s)
- Jia Jia
- Bioengineering Department, Clemson University, Clemson, SC 29634, USA
| | - Dylan J Richards
- Bioengineering Department, Clemson University, Clemson, SC 29634, USA
| | - Samuel Pollard
- Bioengineering Department, Clemson University, Clemson, SC 29634, USA
| | - Yu Tan
- Bioengineering Department, Clemson University, Clemson, SC 29634, USA
| | - Joshua Rodriguez
- Bioengineering Department, Clemson University, Clemson, SC 29634, USA
| | - Richard P Visconti
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Thomas C Trusk
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Michael J Yost
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Hai Yao
- Bioengineering Department, Clemson University, Clemson, SC 29634, USA; Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Roger R Markwald
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Ying Mei
- Bioengineering Department, Clemson University, Clemson, SC 29634, USA; Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA.
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Gogoi N, Chowdhury D. Novel carbon dot coated alginate beads with superior stability, swelling and pH responsive drug delivery. J Mater Chem B 2014; 2:4089-4099. [PMID: 32261740 DOI: 10.1039/c3tb21835j] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel carbon dot coated alginate beads (CA-CD) exhibiting superior stability and swelling properties have been successfully prepared. CA-CD show exceptional stability in ambient condition and are stable at room atmosphere and temperature even after 60 days. Moreover, CA-CD show excessive swelling in comparison to calcium alginate (CA) beads. The beads were characterized by Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), scanning electron microscopy (SEM) and optical microscopy. The CA and CA-CD beads were investigated for their use as pH dependent sustained drug delivery vehicles taking tetracycline (TC) and tetracycline associated with β-cyclodextrin (β-TC) as model drug systems. It was observed that TC loading was 35% and 77% with CA and CA-CD, respectively. Tetracycline associated with β-cyclodextrin (β-TC) shows 48% loading for CA and much greater loading (as high as 90%) for CA-CD. At pH 1, CA-CD and CA beads show maximum drug release with TC cumulative release of 70% and 37% at 96 h, respectively. However, the delivery rates at pH 1 were slower in case of tetracycline associated with β-cyclodextrin (β-TC) loading showing 61% release for CA-CD and 22% for CA after 96 h. Thus, CA-CD can be suitably used as an effective drug delivery vehicle with maximum release obtained at pH 1 emphasizing its use in the gastrointestinal tract where pH is low. Also, the use of β-cyclodextrin with the drug as an inclusion complex renders the CA and CA-CD beads useful for slow and long-term drug administration.
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Affiliation(s)
- Neelam Gogoi
- Material Nanochemistry Laboratory, Physical Sciences Division, Institute of Advanced Study in Science and Technology (IASST), Paschim Boragaon, Garchuk, Guwahati - 781 035, Assam, India.
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Attia N, Santos E, Abdelmouty H, Arafa S, Zohdy N, Hernández RM, Orive G, Pedraz JL. Behaviour and ultrastructure of human bone marrow-derived mesenchymal stem cells immobilised in alginate-poly-l-lysine-alginate microcapsules. J Microencapsul 2014; 31:579-89. [PMID: 24766209 DOI: 10.3109/02652048.2014.898706] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
CONTEXT Human bone marrow mesenchymal stem cells (hBM-MSCs) show a great promise for the treatment of a variety of diseases. Despite the previous trials to encapsulate hBM-MSCs in alginate-poly-l-lysine-alginate (APA) systems, the various changes that follow immobilisation have not been ascertained yet. OBJECTIVE Determine the various consequences derived from entrapment on cell behaviour, putting special emphasis on the ultrastructure. METHODS hBM-MSCs were immobilised in APA microcapsules to further characterise their viability, metabolic activity, proliferation, VEGF-secretability, and morphology. RESULTS The VEGF produced by monolayer hBM-MSCs increased significantly 1 d post-encapsulation, and was maintained for at least 4 weeks. TEM imaging of cells revealed well preserved ultrastructure indicating protein synthesis and high metabolic activity. CONCLUSION Although APA microencapsulation did not support 100% of fully viable hBM-MSCs for long-term cultures, it was conceived to enhance both VEGF secretion and metabolic activity while not losing their stemness characteristics.
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Affiliation(s)
- Noha Attia
- Department of Histology and Cell Biology, Faculty of Medicine, Alexandria University , Alexandria , Egypt
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Tan Y, Richards DJ, Trusk TC, Visconti RP, Yost MJ, Kindy MS, Drake CJ, Argraves WS, Markwald RR, Mei Y. 3D printing facilitated scaffold-free tissue unit fabrication. Biofabrication 2014; 6:024111. [PMID: 24717646 DOI: 10.1088/1758-5082/6/2/024111] [Citation(s) in RCA: 113] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Tissue spheroids hold great potential in tissue engineering as building blocks to assemble into functional tissues. To date, agarose molds have been extensively used to facilitate fusion process of tissue spheroids. As a molding material, agarose typically requires low temperature plates for gelation and/or heated dispenser units. Here, we proposed and developed an alginate-based, direct 3D mold-printing technology: 3D printing microdroplets of alginate solution into biocompatible, bio-inert alginate hydrogel molds for the fabrication of scaffold-free tissue engineering constructs. Specifically, we developed a 3D printing technology to deposit microdroplets of alginate solution on calcium containing substrates in a layer-by-layer fashion to prepare ring-shaped 3D hydrogel molds. Tissue spheroids composed of 50% endothelial cells and 50% smooth muscle cells were robotically placed into the 3D printed alginate molds using a 3D printer, and were found to rapidly fuse into toroid-shaped tissue units. Histological and immunofluorescence analysis indicated that the cells secreted collagen type I playing a critical role in promoting cell-cell adhesion, tissue formation and maturation.
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Affiliation(s)
- Yu Tan
- Department of Bioengineering, Clemson University, Clemson, SC, USA. Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC, USA
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de Vos P, Lazarjani HA, Poncelet D, Faas MM. Polymers in cell encapsulation from an enveloped cell perspective. Adv Drug Deliv Rev 2014; 67-68:15-34. [PMID: 24270009 DOI: 10.1016/j.addr.2013.11.005] [Citation(s) in RCA: 186] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Revised: 08/26/2013] [Accepted: 11/13/2013] [Indexed: 02/07/2023]
Abstract
In the past two decades, many polymers have been proposed for producing immunoprotective capsules. Examples include the natural polymers alginate, agarose, chitosan, cellulose, collagen, and xanthan and synthetic polymers poly(ethylene glycol), polyvinyl alcohol, polyurethane, poly(ether-sulfone), polypropylene, sodium polystyrene sulfate, and polyacrylate poly(acrylonitrile-sodium methallylsulfonate). The biocompatibility of these polymers is discussed in terms of tissue responses in both the host and matrix to accommodate the functional survival of the cells. Cells should grow and function in the polymer network as adequately as in their natural environment. This is critical when therapeutic cells from scarce cadaveric donors are considered, such as pancreatic islets. Additionally, the cell mass in capsules is discussed from the perspective of emerging new insights into the release of so-called danger-associated molecular pattern molecules by clumps of necrotic therapeutic cells. We conclude that despite two decades of intensive research, drawing conclusions about which polymer is most adequate for clinical application is still difficult. This is because of the lack of documentation on critical information, such as the composition of the polymer, the presence or absence of confounding factors that induce immune responses, toxicity to enveloped cells, and the permeability of the polymer network. Only alginate has been studied extensively and currently qualifies for application. This review also discusses critical issues that are not directly related to polymers and are not discussed in the other reviews in this issue, such as the functional performance of encapsulated cells in vivo. Physiological endocrine responses may indeed not be expected because of the many barriers that the metabolites encounter when traveling from the blood stream to the enveloped cells and back to circulation. However, despite these diffusion barriers, many studies have shown optimal regulation, allowing us to conclude that encapsulated grafts do not always follow nature's course but are still a possible solution for many endocrine disorders for which the minute-to-minute regulation of metabolites is mandatory.
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Chan G, Mooney DJ. Ca(2+) released from calcium alginate gels can promote inflammatory responses in vitro and in vivo. Acta Biomater 2013; 9:9281-91. [PMID: 23938198 DOI: 10.1016/j.actbio.2013.08.002] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Revised: 07/25/2013] [Accepted: 08/01/2013] [Indexed: 11/20/2022]
Abstract
In general, alginate hydrogels are considered to be biologically inert and are commonly used for biomedical purposes that require minimum inflammation. However, Ca(2+), which is commonly used to crosslink alginate, is a critical second messenger in immune cell signaling, and little has been done to understand its effect on immune cell fate when delivered as a component of alginate gels. We found that dendritic cells (DCs) encapsulated in Ca(2+)-crosslinked alginate (calcium alginate) secreted at least fivefold more of the inflammatory cytokine IL-1β when compared to DCs encapsulated in agarose and collagen gels, as well as DCs plated on tissue-culture polystyrene (TCPS). Plating cells on TCPS with the alginate polymer could not reproduce these results, whereas culturing DCs on TCPS with increasing concentrations of Ca(2+) increased IL-1β, MHC class II and CD86 expression in a dose-dependent manner. In agreement with these findings, calcium alginate gels induced greater maturation of encapsulated DCs compared to barium alginate gels. When injected subcutaneously in mice, calcium alginate gels significantly upregulated IL-1β secretion from surrounding tissue relative to barium alginate gels, and similarly, the inflammatory effects of LPS were enhanced when it was delivered from calcium alginate gels rather than barium alginate gels. These results confirm that the Ca(2+) used to crosslink alginate gels can be immunostimulatory and suggest that it is important to take into account Ca(2+)'s bioactive effects on all exposed cells (both immune and non-immune) when using calcium alginate gels for biomedical purposes. This work may strongly impact the way people use alginate gels in the future as well as provide insights into past work utilizing alginate gels.
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Affiliation(s)
- Gail Chan
- School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
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