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Kang J, Liang Y, Liu J, Hu M, Lin S, Zhong J, Wang C, Zeng Q, Zhang C. Dual roles of photosynthetic hydrogel with sustained oxygen generation in promoting cell survival and eradicating anaerobic infection. Mater Today Bio 2024; 28:101197. [PMID: 39221211 PMCID: PMC11364899 DOI: 10.1016/j.mtbio.2024.101197] [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: 06/02/2024] [Revised: 07/27/2024] [Accepted: 08/08/2024] [Indexed: 09/04/2024] Open
Abstract
Tissue engineering offers a promising alternative for oral and maxillofacial tissue defect rehabilitation; however, cells within a sizeable engineered tissue construct after transplantation inevitably face prolonged and severe hypoxic conditions, which may compromise the survivability of the transplanted cells and arouse the concern of anaerobic infection. Microalgae, which can convert carbon dioxide and water into oxygen and glucose through photosynthesis, have been studied as a source of oxygen supply for several biomedical applications, but their promise in orofacial tissue regeneration remains unexplored. Here, we demonstrated that through photosynthetic oxygenation, Chlamydomonas reinhardtii (C. reinhardtii) supported dental pulp stem cell (DPSC) energy production and survival under hypoxia. We developed a multifunctional photosynthetic hydrogel by embedding DPSCs and C. reinhardtii encapsulated alginate microspheres (CAMs) within gelatin methacryloyl hydrogel (GelMA) (CAMs@GelMA). This CAMs@GelMA hydrogel can generate a sustainable and sufficient oxygen supply, reverse intracellular hypoxic status, and enhance the metabolic activity and viability of DPSCs. Furthermore, the CAMs@GelMA hydrogel exhibited selective antibacterial activity against oral anaerobes and remarkable antibiofilm effects on multispecies biofilms by disrupting the hypoxic microenvironment and increasing reactive oxygen species generation. Our work presents an innovative photosynthetic strategy for oral tissue engineering and opens new avenues for addressing other hypoxia-related challenges.
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Affiliation(s)
- Jun Kang
- Restorative Dental Sciences, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China
| | - Ye Liang
- Restorative Dental Sciences, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China
| | - Junqing Liu
- Restorative Dental Sciences, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China
| | - Mingxin Hu
- Restorative Dental Sciences, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China
| | - Shulan Lin
- Restorative Dental Sciences, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China
| | - Jialin Zhong
- Restorative Dental Sciences, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China
| | - Chaogang Wang
- Guangdong Technology Research Center for Marine Algal Bioengineering, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China
| | - Qinglu Zeng
- Department of Ocean Science, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Chengfei Zhang
- Restorative Dental Sciences, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China
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Khairallah T, Khoury LR. Aided Porous Medium Emulsification for Functional Hydrogel Microparticles Synthesis. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2311841. [PMID: 39091048 DOI: 10.1002/adma.202311841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 06/05/2024] [Indexed: 08/04/2024]
Abstract
Despite the substantial advancement in developing various hydrogel microparticle (HMP) synthesis methods, emulsification through porous medium to synthesize functional hybrid protein-polymer HMPs has yet to be addressed. Here, the aided porous medium emulsification for hydrogel microparticle synthesis (APME-HMS) system, an innovative approach drawing inspiration from porous medium emulsification is introduced. This method capitalizes on emulsifying immiscible phases within a 3D porous structure for optimal HMP production. Using the APME-HMS system, synthesized responsive bovine serum albumin (BSA) and polyethylene glycol diacrylate (PEGDA) HMPs of various sizes are successfully synthesized. Preserving protein structural integrity and functionality enable the formation of cytochrome c (cyt c) - PEGDA HMPs for hydrogen peroxide (H2O2) detection at various concentrations. The flexibility of the APME-HMS system is demonstrated by its ability to efficiently synthesize HMPs using low volumes (≈50 µL) and concentrations (100 µm) of proteins within minutes while preserving proteins' structural and functional properties. Additionally, the capability of the APME-HMS method to produce a diverse array of HMP types enriches the palette of HMP fabrication techniques, presenting it as a cost-effective, biocompatible, and scalable alternative for various biomedical applications, such as controlled drug delivery, 3D printing bio-inks, biosensing devices, with potential implications even in culinary applications.
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Affiliation(s)
- Tina Khairallah
- Department of Materials Science and Engineering, Technion Israel Institute of Technology, Haifa, 32000, Israel
| | - Luai R Khoury
- Department of Materials Science and Engineering, Technion Israel Institute of Technology, Haifa, 32000, Israel
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Zhao H, Zhang Y, Hua D. A Review of Research Progress in Microfluidic Bioseparation and Bioassay. MICROMACHINES 2024; 15:893. [PMID: 39064404 PMCID: PMC11278910 DOI: 10.3390/mi15070893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2024] [Revised: 07/03/2024] [Accepted: 07/05/2024] [Indexed: 07/28/2024]
Abstract
With the rapid development of biotechnology, the importance of microfluidic bioseparation and bioassay in biomedicine, clinical diagnosis, and other fields has become increasingly prominent. Microfluidic technology, with its significant advantages of high throughput, automated operation, and low sample consumption, has brought new breakthroughs in the field of biological separation and bioassay. In this paper, the latest research progress in microfluidic technology in the field of bioseparation and bioassay is reviewed. Then, we focus on the methods of bioseparation including active separation, passive separation, and hybrid separation. At the same time, the latest research results of our group in particle separation are introduced. Finally, some application examples or methods for bioassay after particle separation are listed, and the current challenges and future prospects of bioseparation and bioassay are discussed.
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Affiliation(s)
| | | | - Dengxin Hua
- Center for Lidar Remote Sensing Research, School of Mechanical and Precision Instrument Engineering, Xi’an University of Technology, Xi’an 710048, China.; (H.Z.); (Y.Z.)
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Frota EG, Pessoa ARS, Souza de Azevedo POD, Dias M, Veríssimo NVP, Zanin MHA, Tachibana L, de Souza Oliveira RP. Symbiotic microparticles produced through spray-drying-induced in situ alginate crosslinking for the preservation of Pediococcus pentosaceus viability. Int J Biol Macromol 2024; 261:129818. [PMID: 38290636 DOI: 10.1016/j.ijbiomac.2024.129818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 01/03/2024] [Accepted: 01/26/2024] [Indexed: 02/01/2024]
Abstract
Probiotic microorganisms are a promising alternative to antibiotics in preventing and treating bacterial infections. Within the probiotic group, the lactic acid bacteria (LAB)stand out for their health benefits and for being recognized as safe by regulatory agencies. However, these microorganisms are sensitive to various environmental conditions, including the acidic environment of the stomach. Faced with these obstacles, this work aimed to promote the symbiotic microencapsulation of LAB in a composite matrix of alginate and prebiotics to enhance their survival and improve their probiotic activity during gastrointestinal transit. We evaluated the effect of inulin, fructo-oligosaccharides (FOS) and mannan-oligosaccharides (MOS) as prebiotic sources on the growth of Pediococcus pentosaceus LBM34 strain, finding that MOS favored LAB growth and maintenance of microencapsulated cell viability. The symbiotic microparticles were produced using the spray-drying technique with an average size of 10 μm, a smooth surface, and a composition that favored the stabilization of live cells according to the FTIR and the thermal analysis of the material. The best formulation was composed of 1 % of alginate, 10 % MOS and 1 % M10 (% w/v), which presented notable increases in the survival rates of the probiotic strain in both alkaline and acidic conditions. Therefore, this industrially scalable approach to symbiotic LAB microencapsulation can facilitate their growth and colonization within the host. This effort aims to contribute to reducing antibiotic reliance and mitigating the emergence of new zoonotic diseases, which pose significant challenges to public health.
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Affiliation(s)
- Elionio Galvão Frota
- Laboratory of Microbial Biomolecules, School of Pharmaceutical Sciences, University of São Paulo, Rua Do Lago, 250, Cidade Universitária, São Paulo 05508-000, Brazil
| | - Amanda Romana Santos Pessoa
- Laboratory of Microbial Biomolecules, School of Pharmaceutical Sciences, University of São Paulo, Rua Do Lago, 250, Cidade Universitária, São Paulo 05508-000, Brazil
| | - Pamela Oliveira de Souza de Azevedo
- Laboratory of Microbial Biomolecules, School of Pharmaceutical Sciences, University of São Paulo, Rua Do Lago, 250, Cidade Universitária, São Paulo 05508-000, Brazil
| | - Meriellen Dias
- Laboratory of Microbial Biomolecules, School of Pharmaceutical Sciences, University of São Paulo, Rua Do Lago, 250, Cidade Universitária, São Paulo 05508-000, Brazil
| | - Nathalia Vieira Porphirio Veríssimo
- Laboratory of Microbial Biomolecules, School of Pharmaceutical Sciences, University of São Paulo, Rua Do Lago, 250, Cidade Universitária, São Paulo 05508-000, Brazil; Department of Engineering of Bioprocesses and Biotechnology, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Rodovia Araraquara-Jaú/Km 01, 14800-903 Araraquara, SP, Brazil
| | - Maria Helena Ambrosio Zanin
- Institute for Technological Research (IPT), Bionanomanufacturing Nucleus, Prof. Almeida Prado Avenue, 532, Butantã, São Paulo, SP 05508-901, Brazil.
| | - Leonardo Tachibana
- Aquaculture Research Center, Scientific Research of Fisheries Institute/APTA/SAA, São Paulo, Brazil.
| | - Ricardo Pinheiro de Souza Oliveira
- Laboratory of Microbial Biomolecules, School of Pharmaceutical Sciences, University of São Paulo, Rua Do Lago, 250, Cidade Universitária, São Paulo 05508-000, Brazil.
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Kállai-Szabó N, Farkas D, Lengyel M, Basa B, Fleck C, Antal I. Microparticles and multi-unit systems for advanced drug delivery. Eur J Pharm Sci 2024; 194:106704. [PMID: 38228279 DOI: 10.1016/j.ejps.2024.106704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 01/12/2024] [Accepted: 01/13/2024] [Indexed: 01/18/2024]
Abstract
Microparticles have unique benefits in the formulation of multiparticulate and multi-unit type pharmaceutical dosage forms allowing improved drug safety and efficacy with favorable pharmacokinetics and patient centricity. On the other hand, the above advantages are served by high and well reproducible quality attributes of the medicinal product where even flexible design and controlled processability offer success as well as possible longer product life-cycle for the manufacturers. Moreover, the specific demands of patients can be taken into account, including simplified dosing regimens, flexible dosage, drug combinations, palatability, and ease of swallowing. In the more than 70 years since the first modified-release formulation appeared on the market, many new formulations have been marketed and many publications have appeared in the literature. More unique and newer pharmaceutical technologies and excipients have become available for producing tailor-made particles with micrometer dimensions and beyond. All these have contributed to the fact that the sub-units (e.g. minitablets, pellets, microspheres) that make up a multiparticulate system can vary widely in composition and properties. Some units have mucoadhesive properties and others can float to contribute to a suitable release profile that can be designed for the multiparticulate formula as a whole. Nowadays, there are some available formulations on the market, which are able to release the active substance even for several months (3 or 6 months depending on the type of treatment). In this review, the latest developments in technologies that have been used for a long time are presented, as well as innovative solutions such as the applicability of 3D printing to produce subunits of multiparticulate systems. Furthermore, the diversity of multiparticulate systems, different routes of administration are also presented, touching the ones which are capable of carrying the active substance as well as the relevant, commercially available multiparticle-based medical devices. The versatility in size from 1 µm and multiplicity of formulation technologies promise a solid foundation for the future applications of dosage form design and development.
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Affiliation(s)
- Nikolett Kállai-Szabó
- Department of Pharmaceutics, Semmelweis University, Hőgyes Str. 7, H-1092 Budapest, Hungary
| | - Dóra Farkas
- Department of Pharmaceutics, Semmelweis University, Hőgyes Str. 7, H-1092 Budapest, Hungary
| | - Miléna Lengyel
- Department of Pharmaceutics, Semmelweis University, Hőgyes Str. 7, H-1092 Budapest, Hungary
| | - Bálint Basa
- Department of Pharmaceutics, Semmelweis University, Hőgyes Str. 7, H-1092 Budapest, Hungary
| | - Christian Fleck
- Department of Pharmaceutics, Semmelweis University, Hőgyes Str. 7, H-1092 Budapest, Hungary
| | - István Antal
- Department of Pharmaceutics, Semmelweis University, Hőgyes Str. 7, H-1092 Budapest, Hungary.
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6
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Seymour AJ, Kilian D, Navarro RS, Hull SM, Heilshorn SC. 3D printing microporous scaffolds from modular bioinks containing sacrificial, cell-encapsulating microgels. Biomater Sci 2023; 11:7598-7615. [PMID: 37824082 PMCID: PMC10842430 DOI: 10.1039/d3bm00721a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
Microgel-based biomaterials have inherent porosity and are often extrudable, making them well-suited for 3D bioprinting applications. Cells are commonly introduced into these granular inks post-printing using cell infiltration. However, due to slow cell migration speeds, this strategy struggles to achieve depth-independent cell distributions within thick 3D printed geometries. To address this, we leverage granular ink modularity by combining two microgels with distinct functions: (1) structural, UV-crosslinkable microgels made from gelatin methacryloyl (GelMA) and (2) sacrificial, cell-laden microgels made from oxidized alginate (AlgOx). We hypothesize that encapsulating cells within sacrificial AlgOx microgels would enable the simultaneous introduction of void space and release of cells at depths unachievable through cell infiltration alone. Blending the microgels in different ratios produces a family of highly printable GelMA : AlgOx microgel inks with void fractions ranging from 0.03 to 0.35. As expected, void fraction influences the morphology of human umbilical vein endothelial cells (HUVEC) within GelMA : AlgOx inks. Crucially, void fraction does not alter the ideal HUVEC distribution seen throughout the depth of 3D printed samples. This work presents a strategy for fabricating constructs with tunable porosity and depth-independent cell distribution, highlighting the promise of microgel-based inks for 3D bioprinting.
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Affiliation(s)
- Alexis J Seymour
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA
| | - David Kilian
- Department of Materials Science & Engineering, Stanford University, Stanford, CA 94305, USA.
| | - Renato S Navarro
- Department of Materials Science & Engineering, Stanford University, Stanford, CA 94305, USA.
| | - Sarah M Hull
- Department of Chemical Engineering, Stanford University, Stanford, CA 94305, USA
| | - Sarah C Heilshorn
- Department of Materials Science & Engineering, Stanford University, Stanford, CA 94305, USA.
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7
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Raghav N, Vashisth C, Mor N, Arya P, Sharma MR, Kaur R, Bhatti SP, Kennedy JF. Recent advances in cellulose, pectin, carrageenan and alginate-based oral drug delivery systems. Int J Biol Macromol 2023:125357. [PMID: 37327920 DOI: 10.1016/j.ijbiomac.2023.125357] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 06/05/2023] [Accepted: 06/10/2023] [Indexed: 06/18/2023]
Abstract
Polymers-based drug delivery systems constitute one of the highly explored thrust areas in the field of the medicinal and pharmaceutical industries. In the past years, the properties of polymers have been modified in context to their solubility, release kinetics, targeted action site, absorption, and therapeutic efficacy. Despite the availability of diverse synthetic polymers for the bioavailability enhancement of drugs, the use of natural polymers is still highly recommended due to their easy availability, accessibility, and non-toxicity. The aim of the review is to provide the available literature of the last five years on oral drug delivery systems based on four natural polymers i.e., cellulose, pectin, carrageenan, and alginate in a concise and tabulated manner. In this review, most of the information is in tabulated form to provide easy accessibility to the reader. The data related to active pharmaceutical ingredients and supported components in different formulations of the mentioned polymers have been made available.
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Affiliation(s)
- Neera Raghav
- Chemistry Department, Kurukshetra University, Kurukshetra, Haryana 136119, India.
| | - Chanchal Vashisth
- Chemistry Department, Kurukshetra University, Kurukshetra, Haryana 136119, India
| | - Nitika Mor
- Chemistry Department, Kurukshetra University, Kurukshetra, Haryana 136119, India
| | - Priyanka Arya
- Chemistry Department, Kurukshetra University, Kurukshetra, Haryana 136119, India
| | - Manishita R Sharma
- Chemistry Department, Kurukshetra University, Kurukshetra, Haryana 136119, India
| | - Ravinder Kaur
- Chemistry Department, Kurukshetra University, Kurukshetra, Haryana 136119, India
| | | | - John F Kennedy
- Chembiotech laboratories Ltd, Tenbury Wells, WR15 8FF, United Kingdom.
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Xue L, Sun J. Magnetic hydrogels with ordered structure for biomedical applications. Front Chem 2022; 10:1040492. [PMID: 36304746 PMCID: PMC9592724 DOI: 10.3389/fchem.2022.1040492] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 09/28/2022] [Indexed: 12/03/2022] Open
Abstract
Magnetic hydrogels composed of hydrogel matrices and magnetic nanomaterials have attracted widespread interests. Thereinto, magnetic hydrogels with ordered structure possessing enhanced functionalities and unique architectures, show tremendous advantages in biomedical fields. The ordered structure brought unique anisotropic properties and excellent physical properties. Furthermore, the anisotropic properties of magnetic ordered hydrogels are more analogous to biological tissues in morphology and mechanical property, showing better biocompatibility and bioinducibility. Thus, we aim to systematically describe the latest advances of magnetic hydrogels with ordered structure. Firstly, this review introduced the synthetic methods of magnetic hydrogels focus on constructing ordered structure. Then, their functionalities and biomedical applications are also summarized. Finally, the current challenges and a compelling perspective outlook of magnetic ordered hydrogel are present.
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Hasturk O, Smiley JA, Arnett M, Sahoo JK, Staii C, Kaplan DL. Cytoprotection of Human Progenitor and Stem Cells through Encapsulation in Alginate Templated, Dual Crosslinked Silk and Silk-Gelatin Composite Hydrogel Microbeads. Adv Healthc Mater 2022; 11:e2200293. [PMID: 35686928 PMCID: PMC9463115 DOI: 10.1002/adhm.202200293] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 03/28/2022] [Indexed: 01/27/2023]
Abstract
Susceptibility of mammalian cells against harsh processing conditions limit their use in cell transplantation and tissue engineering applications. Besides modulation of the cell microenvironment, encapsulation of mammalian cells within hydrogel microbeads attract attention for cytoprotection through physical isolation of the encapsulated cells. The hydrogel formulations used for cell microencapsulation are largely dominated by ionically crosslinked alginate (Alg), which suffer from low structural stability under physiological culture conditions and poor cell-matrix interactions. Here the fabrication of Alg templated silk and silk/gelatin composite hydrogel microspheres with permanent or on-demand cleavable enzymatic crosslinks using simple and cost-effective centrifugation-based droplet processing are demonstrated. The composite microbeads display structural stability under ion exchange conditions with improved mechanical properties compared to ionically crosslinked Alg microspheres. Human mesenchymal stem and neural progenitor cells are successfully encapsulated in the composite beads and protected against environmental factors, including exposure to polycations, extracellular acidosis, apoptotic cytokines, ultraviolet (UV) irradiation, anoikis, immune recognition, and particularly mechanical stress. The microbeads preserve viability, growth, and differentiation of encapsulated stem and progenitor cells after extrusion in viscous polyethylene oxide solution through a 27-gauge fine needle, suggesting potential applications in injection-based delivery and three-dimensional bioprinting of mammalian cells with higher success rates.
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Affiliation(s)
- Onur Hasturk
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA
| | - Jordan A. Smiley
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA
| | - Miles Arnett
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA
| | - Jugal Kishore Sahoo
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA
| | - Cristian Staii
- Department of Physics and Astronomy, Tufts University, Medford, MA 02155, USA
| | - David L. Kaplan
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA
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Low Cost, Easily-Assembled Centrifugal Buoyancy-Based Emulsification and Digital PCR. MICROMACHINES 2022; 13:mi13020171. [PMID: 35208296 PMCID: PMC8924881 DOI: 10.3390/mi13020171] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 01/18/2022] [Accepted: 01/20/2022] [Indexed: 11/29/2022]
Abstract
Microfluidic-based droplet generation approaches require the design of microfluidic chips and a precise lithography process, which require skilled technicians and a long manufacturing time. Here we developed a centrifugal buoyancy-based emulsification (CBbE) method for producing droplets with high efficiency and minimal fabrication time. Our approach is to fabricate a droplet generation module that can be easily assembled using syringe needles and PCR tubes. With this module and a common centrifuge, high-throughput droplet generation with controllable droplet size could be realized in a few minutes. Experiments showed that the droplet diameter depended mainly on centrifugal speed, and droplets with controllable diameter from 206 to 158 μm could be generated under a centrifugal acceleration range from 14 to 171.9 g. Excellent droplet uniformity was achieved (CV < 3%) when centrifugal acceleration was greater than 108 g. We performed digital PCR tests through the CBbE approach and demonstrated that this cost-effective method not only eliminates the usage of complex microfluidic devices and control systems but also greatly suppresses the loss of materials and cross-contamination. CBbE-enabled droplet generation combines both easiness and robustness, and breaks the technical challenges by using conventional lab equipment and supplies.
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Sodium Alginate as a Pharmaceutical Excipient: Novel Applications of a Well-known Polymer. J Pharm Sci 2022; 111:1250-1261. [PMID: 34986359 DOI: 10.1016/j.xphs.2021.12.024] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 12/28/2021] [Accepted: 12/28/2021] [Indexed: 12/30/2022]
Abstract
Alginates are naturally occurring polymers revealing low toxicity, good biocompatibility and biodegradability, excellent gelling and thickening properties, as well as low production cost and good availability. One of the most important features typical for alginates is the ability to undergo ionotropic gelation which is gel formation process occurring upon the contact with cations. Because of their advantageous properties, alginates have been extensively utilized in food and pharmaceutical industries. In this review the current knowledge regarding the most recent studies involving both popularly applied dosage forms, like tablets or hydrogels, and novel advanced drug delivery systems applied in targeted therapies are summarized and discussed. The presented studies indicate that although sodium alginate is a well-established polymer, it is still widely applied as pharmaceutical excipient and the presented research studies indicate that there are still research areas that can be explored and provide innovation in drug delivery systems.
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12
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Application of Non-Viral Vectors in Drug Delivery and Gene Therapy. Polymers (Basel) 2021; 13:polym13193307. [PMID: 34641123 PMCID: PMC8512075 DOI: 10.3390/polym13193307] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 09/15/2021] [Accepted: 09/18/2021] [Indexed: 12/13/2022] Open
Abstract
Vectors and carriers play an indispensable role in gene therapy and drug delivery. Non-viral vectors are widely developed and applied in clinical practice due to their low immunogenicity, good biocompatibility, easy synthesis and modification, and low cost of production. This review summarized a variety of non-viral vectors and carriers including polymers, liposomes, gold nanoparticles, mesoporous silica nanoparticles and carbon nanotubes from the aspects of physicochemical characteristics, synthesis methods, functional modifications, and research applications. Notably, non-viral vectors can enhance the absorption of cargos, prolong the circulation time, improve therapeutic effects, and provide targeted delivery. Additional studies focused on recent innovation of novel synthesis techniques for vector materials. We also elaborated on the problems and future research directions in the development of non-viral vectors, which provided a theoretical basis for their broad applications.
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Park B, Ghoreishian SM, Kim Y, Park BJ, Kang SM, Huh YS. Dual-functional micro-adsorbents: Application for simultaneous adsorption of cesium and strontium. CHEMOSPHERE 2021; 263:128266. [PMID: 33297210 DOI: 10.1016/j.chemosphere.2020.128266] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 09/01/2020] [Accepted: 09/02/2020] [Indexed: 06/12/2023]
Abstract
In current work, Prussian blue (PB)- and hydroxyapatite (HAp)-embedded micro-adsorbents (PB-HAp-MAs) were rationally fabricated through an easy and flexible custom-made micronozzle system as a novel bifunctional adsorbent. The adsorption performance of the as-prepared samples was conducted based on the removal of cesium (Cs+) and strontium (Sr2+) ions. Adsorption behaviors of the PB-HAp-MAs were also evaluated as function extrusion dimensions and adsorbate concentration. The adsorption isotherm was well fitted by the Langmuir model with adsorption capacities of 24.688 mg g-1 and 29.254 mg g-1 for Cs+ and Sr2+, respectively. Specially, the enhanced adsorption activity can be synergistically attributed to the porous nature of the developed alginate backbone with a high surface area of encapsulated functional nanoparticles, thus leading to rapid saturation within 1 min. In addition, the as-synthesized PB-HAp-MAs were successfully separated from the aqueous solution within 10 s by applying a magnetic field. We expect that our findings will provide valuable guidelines towards developing highly efficient adsorbents for environmental remediation.
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Affiliation(s)
- Bumjun Park
- NanoBio High-Tech Materials Research Center, Department of Biological Engineering, Inha University, 100 Inha-ro, Incheon, 22212, Republic of Korea.
| | - Seyed Majid Ghoreishian
- NanoBio High-Tech Materials Research Center, Department of Biological Engineering, Inha University, 100 Inha-ro, Incheon, 22212, Republic of Korea
| | - Yeonho Kim
- Research Institute of Basic Science, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon, 22012, Republic of Korea
| | - Bum Jun Park
- Department of Chemical Engineering, Kyung Hee University, Yongin, 17104, Republic of Korea.
| | - Sung-Min Kang
- Department of Green Chemical Engineering, Sangmyung University, Cheonan, Chungnam, 31066, Republic of Korea.
| | - Yun Suk Huh
- NanoBio High-Tech Materials Research Center, Department of Biological Engineering, Inha University, 100 Inha-ro, Incheon, 22212, Republic of Korea.
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14
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Hariyadi DM, Islam N. Current Status of Alginate in Drug Delivery. Adv Pharmacol Pharm Sci 2020; 2020:8886095. [PMID: 32832902 PMCID: PMC7428837 DOI: 10.1155/2020/8886095] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 06/19/2020] [Accepted: 06/23/2020] [Indexed: 12/21/2022] Open
Abstract
Alginate is one of the natural polymers that are often used in drug- and protein-delivery systems. The use of alginate can provide several advantages including ease of preparation, biocompatibility, biodegradability, and nontoxicity. It can be applied to various routes of drug administration including targeted or localized drug-delivery systems. The development of alginates as a selected polymer in various delivery systems can be adjusted depending on the challenges that must be overcome by drug or proteins or the system itself. The increased effectiveness and safety of sodium alginate in the drug- or protein-delivery system are evidenced by changing the physicochemical characteristics of the drug or proteins. In this review, various routes of alginate-based drug or protein delivery, the effectivity of alginate in the stem cells, and cell encapsulation have been discussed. The recent advances in the in vivo alginate-based drug-delivery systems as well as their toxicities have also been reviewed.
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Affiliation(s)
- Dewi Melani Hariyadi
- Pharmaceutics Department, Faculty of Pharmacy, Airlangga University, Nanizar Zaman Joenoes Building, Jl. Mulyorejo Campus C, Surabaya 60115, Indonesia
| | - Nazrul Islam
- School of Clinical Sciences, Queensland University of Technology, Brisbane, Australia
- Institute of Health and Biomedical Innovation (IHBI), Queensland University of Technology, Brisbane, QLD, Australia
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Kang SM, Lee JH, Huh YS, Takayama S. Alginate Microencapsulation for Three-Dimensional In Vitro Cell Culture. ACS Biomater Sci Eng 2020; 7:2864-2879. [PMID: 34275299 DOI: 10.1021/acsbiomaterials.0c00457] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Advances in microscale 3D cell culture systems have helped to elucidate cellular physiology, understand mechanisms of stem cell differentiation, produce pathophysiological models, and reveal important cell-cell and cell-matrix interactions. An important consideration for such studies is the choice of material for encapsulating cells and associated extracellular matrix (ECM). This Review focuses on the use of alginate hydrogels, which are versatile owing to their simple gelation process following an ionic cross-linking mechanism in situ, with no need for procedures that can be potentially toxic to cells, such as heating, the use of solvents, and UV exposure. This Review aims to give some perspectives, particularly to researchers who typically work more with poly(dimethylsiloxane) (PDMS), on the use of alginate as an alternative material to construct microphysiological cell culture systems. More specifically, this Review describes how physicochemical characteristics of alginate hydrogels can be tuned with regards to their biocompatibility, porosity, mechanical strength, ligand presentation, and biodegradability. A number of cell culture applications are also described, and these are subcategorized according to whether the alginate material is used to homogeneously embed cells, to micropattern multiple cellular microenvironments, or to provide an outer shell that creates a space in the core for cells and other ECM components. The Review ends with perspectives on future challenges and opportunities for 3D cell culture applications.
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Affiliation(s)
- Sung-Min Kang
- Wallace H Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory School of Medicine, Atlanta, 30332, United States of America.,The Parker H Petit Institute of Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, 30332, United States of America.,NanoBio High-Tech Materials Research Center, Department of Biological Engineering, Inha University, 100 Inha-ro, Incheon, 22212, Republic of Korea
| | - Ji-Hoon Lee
- Wallace H Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory School of Medicine, Atlanta, 30332, United States of America.,The Parker H Petit Institute of Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, 30332, United States of America
| | - Yun Suk Huh
- NanoBio High-Tech Materials Research Center, Department of Biological Engineering, Inha University, 100 Inha-ro, Incheon, 22212, Republic of Korea
| | - Shuichi Takayama
- Wallace H Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory School of Medicine, Atlanta, 30332, United States of America.,The Parker H Petit Institute of Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, 30332, United States of America
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