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Kanniyappan H, Gnanasekar V, Parise V, Debnath K, Sun Y, Thakur S, Thakur G, Perumal G, Kumar R, Wang R, Merchant A, Sriram R, Mathew MT. Harnessing extracellular vesicles-mediated signaling for enhanced bone regeneration: novel insights into scaffold design. Biomed Mater 2024; 19:055004. [PMID: 38917828 DOI: 10.1088/1748-605x/ad5ba9] [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: 01/24/2024] [Accepted: 06/25/2024] [Indexed: 06/27/2024]
Abstract
The increasing prevalence of bone replacements and complications associated with bone replacement procedures underscores the need for innovative tissue restoration approaches. Existing synthetic grafts cannot fully replicate bone vascularization and mechanical characteristics. This study introduces a novel strategy utilizing pectin, chitosan, and polyvinyl alcohol to create interpenetrating polymeric network (IPN) scaffolds incorporated with extracellular vesicles (EVs) isolated from human mesenchymal stem cells (hMSCs). We assess the osteointegration and osteoconduction abilities of these modelsin vitrousing hMSCs and MG-63 osteosarcoma cells. Additionally, we confirm exosome properties through Transmission Electron Microscopy (TEM), immunoblotting, and Dynamic Light Scattering (DLS).In vivo, chick allantoic membrane assay investigates vascularization characteristics. The study did not includein vivoanimal experiments. Our results demonstrate that the IPN scaffold is highly porous and interconnected, potentially suitable for bone implants. EVs, approximately 100 nm in size, enhance cell survival, proliferation, alkaline phosphatase activity, and the expression of osteogenic genes. EVs-mediated IPN scaffolds demonstrate promise as precise drug carriers, enabling customized treatments for bone-related conditions and regeneration efforts. Therefore, the EVs-mediated IPN scaffolds demonstrate promise as precise carriers for the transport of drugs, allowing for customized treatments for conditions connected to bone and efforts in regeneration.
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Affiliation(s)
- Hemalatha Kanniyappan
- Regeneratve Medicine and Disability Research Laboratory (RMDR), Department of Biomedical Sciences, University of Illinois College of Medicine, Rockford, IL, United States of America
- Department of Chemistry, Illinois Institute of Technology (IIT), Chicago, IL, United States of America
| | - Varun Gnanasekar
- University of Wisconsin-Madison, Madison, WI, United States of America
| | - Vincent Parise
- Regeneratve Medicine and Disability Research Laboratory (RMDR), Department of Biomedical Sciences, University of Illinois College of Medicine, Rockford, IL, United States of America
| | - Koushik Debnath
- College of Dentistry, University of Illinois, Chicago, IL, United States of America
| | - Yani Sun
- Department of Material Sciences, University of Illinois, Chicago, IL, United States of America
| | - Shriya Thakur
- Regeneratve Medicine and Disability Research Laboratory (RMDR), Department of Biomedical Sciences, University of Illinois College of Medicine, Rockford, IL, United States of America
| | - Gitika Thakur
- Regeneratve Medicine and Disability Research Laboratory (RMDR), Department of Biomedical Sciences, University of Illinois College of Medicine, Rockford, IL, United States of America
| | - Govindaraj Perumal
- Regeneratve Medicine and Disability Research Laboratory (RMDR), Department of Biomedical Sciences, University of Illinois College of Medicine, Rockford, IL, United States of America
| | - Raj Kumar
- Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Solan, India
| | - Rong Wang
- Department of Chemistry, Illinois Institute of Technology (IIT), Chicago, IL, United States of America
| | - Aftab Merchant
- Regeneratve Medicine and Disability Research Laboratory (RMDR), Department of Biomedical Sciences, University of Illinois College of Medicine, Rockford, IL, United States of America
| | - Ravindran Sriram
- College of Dentistry, University of Illinois, Chicago, IL, United States of America
| | - Mathew T Mathew
- Regeneratve Medicine and Disability Research Laboratory (RMDR), Department of Biomedical Sciences, University of Illinois College of Medicine, Rockford, IL, United States of America
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Beltran O, Luna M, Gastelum M, Costa-Santos A, Cambón A, Taboada P, López-Mata MA, Topete A, Juarez J. Novel Gold Nanorods@Thiolated Pectin on the Killing of HeLa Cells by Photothermal Ablation. Pharmaceutics 2023; 15:2571. [PMID: 38004550 PMCID: PMC10675277 DOI: 10.3390/pharmaceutics15112571] [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: 09/21/2023] [Revised: 10/25/2023] [Accepted: 10/31/2023] [Indexed: 11/26/2023] Open
Abstract
Gold nanorods (AuNRs) have attracted attention in the field of biomedicine, particularly for their potential as photothermal agents capable of killing tumor cells by photothermic ablation. In this study, the synthesis of novel AuNRs stabilized with thiolated pectin (AuNR@SH-PEC) is reported. To achieve this, thiolated pectin (SH-PEC) was obtained by chemically binding cysteamine motifs to the pectin backbone. The success of the reaction was ascertained using FTIR-ATR. Subsequently, the SH-PEC was used to coat and stabilize the surface of AuNRs (AuNR@SH-PEC). In this context, different concentrations of SH-PEC (0.25, 0.50, 1.0, 2.0, 4.0, and 8.0 mg/mL) were added to 0.50 mL of AuNRs suspended in CTAB, aiming to determine the experimental conditions under which AuNR@SH-PEC maintains stability. The results show that SH-PEC effectively replaced the CTAB adsorbed on the surface of AuNRs, enhancing the stability of AuNRs without affecting their optical properties. Additionally, scanning electron and atomic force microscopy confirmed that SH-PEC is adsorbed into the surface of the AuNRs. Importantly, the dimension size (60 × 15 nm) and the aspect ratio (4:1) remained consistent with those of AuNRs stabilized with CTAB. Then, the photothermal properties of gold nanorods were evaluated by irradiating the aqueous suspension of AuNR@SH-PEC with a CW laser (808 nm, 1 W). These results showed that photothermal conversion efficiency is similar to the photothermal conversion observed for AuNR-CTAB. Lastly, the cell viability assays confirmed that the SH-PEC coating enhanced the biocompatibility of AuNR@SH-PEC. Most important, the viability cell assays subjected to laser irradiation in the presence of AuNR@SH-PEC showed a decrease in the cell viability relative to the non-irradiated cells. These results suggest that AuNRs stabilized with thiolated pectin can potentially be exploited in the implementation of photothermal therapy.
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Affiliation(s)
- Osvaldo Beltran
- Posgrado en Nanotecnología, Departamento de Física, Universidad de Sonora, Unidad Centro, Hermosillo 83000, Sonora, Mexico; (O.B.); (M.L.); (M.G.)
| | - Mariangel Luna
- Posgrado en Nanotecnología, Departamento de Física, Universidad de Sonora, Unidad Centro, Hermosillo 83000, Sonora, Mexico; (O.B.); (M.L.); (M.G.)
| | - Marisol Gastelum
- Posgrado en Nanotecnología, Departamento de Física, Universidad de Sonora, Unidad Centro, Hermosillo 83000, Sonora, Mexico; (O.B.); (M.L.); (M.G.)
| | - Alba Costa-Santos
- Grupo de Física de Coloides y Polímeros, Área de Materia Condensada, Departamento de Física de Partículas, Facultad de Física, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (A.C.-S.); (A.C.); (P.T.)
- Instituto de Materiales (IMATUS), Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Adriana Cambón
- Grupo de Física de Coloides y Polímeros, Área de Materia Condensada, Departamento de Física de Partículas, Facultad de Física, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (A.C.-S.); (A.C.); (P.T.)
- Instituto de Materiales (IMATUS), Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Pablo Taboada
- Grupo de Física de Coloides y Polímeros, Área de Materia Condensada, Departamento de Física de Partículas, Facultad de Física, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (A.C.-S.); (A.C.); (P.T.)
- Instituto de Materiales (IMATUS), Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Marco A. López-Mata
- Departamento de Ciencias de la Salud, Universidad de Sonora, Campus Cajeme, Blvd. Bordo Nuevo s/n, Antiguo Providencia, Ciudad Obregón 85040, Sonora, Mexico;
| | - Antonio Topete
- Departamento de Fisiología, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Sierra Mojada 950, Guadalajara 44340, Jalisco, Mexico;
| | - Josue Juarez
- Posgrado en Nanotecnología, Departamento de Física, Universidad de Sonora, Unidad Centro, Hermosillo 83000, Sonora, Mexico; (O.B.); (M.L.); (M.G.)
- Departamento de Física, Universidad de Sonora, Unidad Centro, Hermosillo 83000, Sonora, Mexico
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Gao Y, Zhang X, Zhou H. Biomimetic Hydrogel Applications and Challenges in Bone, Cartilage, and Nerve Repair. Pharmaceutics 2023; 15:2405. [PMID: 37896165 PMCID: PMC10609742 DOI: 10.3390/pharmaceutics15102405] [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: 09/04/2023] [Revised: 09/22/2023] [Accepted: 09/27/2023] [Indexed: 10/29/2023] Open
Abstract
Tissue engineering and regenerative medicine is a highly sought-after field for researchers aiming to compensate and repair defective tissues. However, the design and development of suitable scaffold materials with bioactivity for application in tissue repair and regeneration has been a great challenge. In recent years, biomimetic hydrogels have shown great possibilities for use in tissue engineering, where they can tune mechanical properties and biological properties through functional chemical modifications. Also, biomimetic hydrogels provide three-dimensional (3D) network spatial structures that can imitate normal tissue microenvironments and integrate cells, scaffolds, and bioactive substances for tissue repair and regeneration. Despite the growing interest in various hydrogels for biomedical use in previous decades, there are still many aspects of biomimetic hydrogels that need to be understood for biomedical and clinical trial applications. This review systematically describes the preparation of biomimetic hydrogels and their characteristics, and it details the use of biomimetic hydrogels in bone, cartilage, and nerve tissue repair. In addition, this review outlines the application of biomimetic hydrogels in bone, cartilage, and neural tissues regarding drug delivery. In particular, the advantages and shortcomings of biomimetic hydrogels in biomaterial tissue engineering are highlighted, and future research directions are proposed.
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Affiliation(s)
- Yanbing Gao
- Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou 730030, China;
- Key Laboratory of Bone and Joint Disease Research of Gansu Province, Lanzhou 730030, China
| | - Xiaobo Zhang
- Department of Orthopedics, Honghui Hospital, Xi’an Jiaotong University, Xi’an 710000, China
| | - Haiyu Zhou
- Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou 730030, China;
- Key Laboratory of Bone and Joint Disease Research of Gansu Province, Lanzhou 730030, China
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Abdallah HM, Abu Elella MH, Abdel-Aziz MM. One-pot green synthesis of chitosan biguanidine nanoparticles for targeting M. tuberculosis. Int J Biol Macromol 2023; 232:123394. [PMID: 36702228 DOI: 10.1016/j.ijbiomac.2023.123394] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 01/07/2023] [Accepted: 01/19/2023] [Indexed: 01/24/2023]
Abstract
Tuberculosis (TB) is considered as one of the most fatal infectious diseases nowadays. Several traditional anti-tuberculosis drugs like isoniazid have been largely applied; however, they are associated with toxicity and poor anti-TB treatment. So, the fabrication of new alternative anti-TB drugs containing natural biopolymers for TB treatment has attracted great attention in recent years because of their remarkable features: biodegradability, biocompatibility and non-toxicity. Therefore, their medicine is very effective with low side effects compared with synthetic drugs. Our current work intends to engineer chitosan biguanidine (ChBG) nanoparticles as a new safe and high-efficient anti-TB drug using one-pot, green, cost-effective ionic gelation method. The chemical structure of as-formed materials was chemically confirmed using various analysis techniques: H-NMR, FTIR, SEM, and TEM. TEM results have proved the formation of uniformly well-distributed ChBG nanoparticles with a small particle size of ~38 nm. The inhibitory activity of these prepared nanoparticles was investigated against the growth of three different M. tuberculosis pathogens such as sensitive, MDR, and XDR, and in a comparison with the isoniazid drug as a standard anti-tuberculosis drug. The antituberculosis assay results showed that ChBG NPs attained MIC values of 0.48, 3.9, 7.81 μg/mL for inhibiting the growth of sensitive, MDR, and XDR M. tuberculosis pathogens compared to bare Ch NPs (15.63, 62.5 > 125 μg/mL) and the isoniazid drug (0.24, 0, 0 μg/mL), respectively. Moreover, cytotoxicity of the ChBG NPs was examined against normal lung cell lines (Wi38) and was found to have cell viability of 100 % with the concentration range of 0.48-7.81 μg/mL.
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Affiliation(s)
- Heba M Abdallah
- Polymers and Pigments Department, Chemical Industries Research Institute, National Research Centre, Dokki, Giza 12622, Egypt.
| | | | - Marwa M Abdel-Aziz
- The Regional Center for Mycology and Biotechnology, Al-Azhar University, Cairo 11651, Egypt
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5
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Zeng W, Jiang C, Wu D. Heterogeneity Regulation of Bilayer Polysaccharide Hydrogels for Integrating pH- and Humidity-Responsive Actuators and Sensors. ACS APPLIED MATERIALS & INTERFACES 2023; 15:16097-16108. [PMID: 36924131 DOI: 10.1021/acsami.3c01244] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Bilayer hydrogel-based actuators have attracted much interest because inhomogeneous structures are easily constructed in hydrogels. We used three kinds of polysaccharides, including anionic carboxymethyl cellulose (CMC), cationic chitosan (CS), and amphoteric carboxymethyl chitosan (CMCS), as both structure-constructing units and actuation-controlling units in this work to fabricate physically crosslinked poly(vinyl alcohol) bilayer hydrogels. The spatial heterogeneity was tuned by changing the types and concentrations of polysaccharides in different layers, to regulate pH- and humidity-driven actions of bilayer hydrogels. Based on the distortion of the ionic channel during the humidity-motivated deformation of bilayer hydrogels, a two-in-one flexible device integrating a humidity-driven actuator and humidity-responsive sensor was then developed, which could detect the alterations of environmental humidity in real time. Moreover, good tensile toughness and interfacial bonding as well as the strain-resistance effect endowed the bilayer hydrogels with the capability of identifying human motion as a strain sensor, unlocking more application scenarios. This work provides an overall insight into the heterogeneity regulation of bilayer hydrogels using polysaccharides as stimulus-responsive units and also proposes an interesting strategy of manufacturing hydrogel-based flexible devices with both actuating and sensing capabilities.
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Affiliation(s)
- Wenjie Zeng
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China
| | - Chenguang Jiang
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China
| | - Defeng Wu
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China
- Provincial Key Laboratories of Environmental Materials & Engineering, Yangzhou, Jiangsu 225002, P. R. China
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6
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Abu Elella MH, Goda ES, Abdallah HM, Abdel-Aziz MM, Gamal H. Green engineering of TMC-CMS nanoparticles decorated graphene sheets for targeting M. tuberculosis. Carbohydr Polym 2023; 303:120443. [PMID: 36657855 DOI: 10.1016/j.carbpol.2022.120443] [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: 10/03/2022] [Revised: 11/20/2022] [Accepted: 12/04/2022] [Indexed: 12/14/2022]
Abstract
Our current work intends to primarily engineer a new type of antibacterial composite by preparing a highly biocompatible graphene sheet decorated with TMC-CMS IPNs nanoparticles utilizing one-pot, green, cost-effective ultrasonication approach. The microstructure of as-formed materials was chemically confirmed using various analytical techniques such as 1H-NMR, FTIR, UV/vis, SEM, and TEM. TEM data has proved the formation of uniformly distributed TCNPs on graphene surfaces with a small particle size of ~22 nm compared with that of pure nanoparticles (~30 nm). The inhibitory activity of these developed materials was examined against the growth of three different M. tuberculosis pathogens and in a comparison with the isoniazid drug as a standard anti-tuberculosis drug. The TCNPs@GRP composite attained MIC values of 0.98, 3.9, and 7.81 μg/mL for inhibiting the growth of sensitive, MDR, and XDR M. tuberculosis pathogens compared to the bare TCNPs (7.81, 31.25, >125 μg/mL) and the isoniazid drug (0.24, 0, 0 μg/mL), respectively. This reveals a considerable synergism in the antituberculosis activity between TCNPs and graphene nanosheets. Cytotoxicity of the TCNPs@GRP was examined against normal lung cell lines (WI38) and was found to have cell viability of 100% with the concentration range of 0.98-7.81 μg/mL.
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Affiliation(s)
| | - Emad S Goda
- Organic Nanomaterials Lab, Department of Chemistry, Hannam University, Daejeon 34054, Republic of Korea; Gas Analysis and Fire Safety Laboratory, Chemistry Division, National Institute for Standards, 136, Giza 12211, Egypt.
| | - Heba M Abdallah
- Polymers and Pigments Department, Chemical Industries Research institute, National Research Center, Dokki, Giza 12622, Egypt
| | - Marwa M Abdel-Aziz
- Regional Center for Mycology and Biotechnology, Al-Azhar University, Cairo 11651, Egypt
| | - Heba Gamal
- Home Economy Department, Faculty of Specific Education, Alexandria University, Alexandria, Egypt
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Younas F, Zaman M, Aman W, Farooq U, Raja MAG, Amjad MW. Thiolated Polymeric Hydrogels for Biomedical Applications: A Review. Curr Pharm Des 2023; 29:3172-3186. [PMID: 37622704 DOI: 10.2174/1381612829666230825100859] [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: 03/23/2023] [Revised: 07/06/2023] [Accepted: 07/20/2023] [Indexed: 08/26/2023]
Abstract
Hydrogels are a three-dimensional (3D) network of hydrophilic polymers. The physical and chemical crosslinking of polymeric chains maintains the structure of the hydrogels even when they are swollen in water. They can be modified with thiol by thiol epoxy, thiol-ene, thiol-disulfide, or thiol-one reactions. Their application as a matrix for protein and drug delivery, cellular immobilization, regenerative medicine, and scaffolds for tissue engineering was initiated in the early 21st century. This review focuses on the ingredients, classification techniques, and applications of hydrogels, types of thiolation by different thiol-reducing agents, along with their mechanisms. In this study, different applications for polymers used in thiolated hydrogels, including dextran, gelatin, polyethylene glycol (PEG), cyclodextrins, chitosan, hyaluronic acid, alginate, poloxamer, polygalacturonic acid, pectin, carrageenan gum, arabinoxylan, carboxymethyl cellulose (CMC), gellan gum, and polyvinyl alcohol (PVA) are reviewed.
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Affiliation(s)
- Farhan Younas
- Faculty of Pharmacy, University of Central Punjab, Lahore, Pakistan
| | - Muhammad Zaman
- Faculty of Pharmacy, University of Central Punjab, Lahore, Pakistan
| | - Waqar Aman
- Faculty of Pharmacy, University of Central Punjab, Lahore, Pakistan
| | - Umer Farooq
- Faculty of Pharmacy, University of Central Punjab, Lahore, Pakistan
| | | | - Muhammad Wahab Amjad
- Center for Ultrasound Molecular Imaging and Therapeutics, Pittsburgh Heart, Lung, Blood and Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, Pennsylvania, PA 15213, USA
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pH-responsive in situ gelling properties of thiolated citrus high-methoxyl pectin and its potential gel mechanism. Food Res Int 2023; 163:112220. [PMID: 36596149 DOI: 10.1016/j.foodres.2022.112220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 11/15/2022] [Accepted: 11/20/2022] [Indexed: 11/25/2022]
Abstract
pH-responsive in situ gelling properties of thiolated citrus high-methoxyl pectin (TCHMP) were investigated in this study. The gelation capacity results revealed that the in situ gelation behavior of TCHMP only occurred when the pH value was higher than 6.25. The gel strength increased from 26.63 g to 42.77 g as the pH value increased from 7.4 to 8.9. Rheological measurements confirmed that the apparent viscosity and viscoelasticity of TCHMP were highly dependent on pH value and dialysis time. Compared with the control group, the apparent viscosity of TCHMP dialyzed in phosphate-buffered saline (PBS) of pH 8.9 for 180 min increased 695-fold. During the dialysis process of TCHMP at different pH values (7.4-8.9), the final thiol groups content decreased and the final disulfide bonds content increased with the increase in pH value. This illustrates that the mechanism of in situ gelation is mainly the oxidation of thiol-thiol groups to form disulfide bonds. These results can put forward new insights into the pH-responsive in situ gelling properties of TCHMP and provide a theoretical basis for the application of TCHMP in neutral and alkaline gel systems.
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Wachendörfer M, Buhl EM, Messaoud GB, Richtering W, Fischer H. pH and Thrombin Concentration Are Decisive in Synthesizing Stiff, Stable, and Open-Porous Fibrin-Collagen Hydrogel Blends without Chemical Cross-Linker. Adv Healthc Mater 2022; 12:e2203302. [PMID: 36546310 DOI: 10.1002/adhm.202203302] [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: 12/19/2022] [Indexed: 12/24/2022]
Abstract
Fibrin-collagen hydrogel blends exhibit high potential for tissue engineering applications. However, it is still unclear whether the underlying cross-linking mechanisms are of chemical or physical nature. It is here hypothesized that chemical cross-linkers play a negligible role and that instead pH and thrombin concentration are decisive for synthetizing blends with high stiffness and hydrolytic stability. Different fibrin-collagen formulations (pure and with additional transglutaminase) are used and the blends' compaction rate, hydrolytic stability, compressive strength, and hydrogel microstructure are investigated. The effect of thrombin concentration on gel compaction is examined and the importance of pH control during synthesis observed. It is revealed that transglutaminase impairs gel stability and it is deduced that fibrin-collagen blends mainly cross-link by mechanical interactions due to physical fibril entanglement as opposed to covalent bonds from chemical cross-linking. High thrombin concentrations and basic pH during synthesis reduce gel compaction and enhance stiffness and long-term stability. Scanning electron microscopy reveals a highly interpenetrating fibrous network with unique, interconnected open-porous microstructures. Endothelial cells proliferate on the blends and form a confluent monolayer. This study reveals the underlying cross-linking mechanisms and presents enhanced fibrin-collagen blends with high stiffness, hydrolytic stability, and large, interconnected pores; findings that offer high potential for advanced tissue engineering applications.
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Affiliation(s)
- Mattis Wachendörfer
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, Pauwelsstrasse 30, 52074, Aachen, Germany
| | - Eva Miriam Buhl
- Electron Microscopy Facility, Institute of Pathology, RWTH Aachen University Hospital, Pauwelsstrasse 30, 52074, Aachen, Germany
| | - Ghazi Ben Messaoud
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52074, Aachen, Germany.,Physical Chemistry, DWI-Leibniz Institute for Interactive Materials, Forckenbeckstr. 50, 52074, Aachen, Germany
| | - Walter Richtering
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52074, Aachen, Germany.,Physical Chemistry, DWI-Leibniz Institute for Interactive Materials, Forckenbeckstr. 50, 52074, Aachen, Germany
| | - Horst Fischer
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, Pauwelsstrasse 30, 52074, Aachen, Germany
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Rajabi M, Cabral J, Saunderson S, Ali MA. Green synthesis of chitooligosaccharide-PEGDA derivatives through aza-Michael reaction for biomedical applications. Carbohydr Polym 2022; 295:119884. [DOI: 10.1016/j.carbpol.2022.119884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 07/14/2022] [Accepted: 07/14/2022] [Indexed: 11/25/2022]
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11
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Kai-chao S, Yu-mei H, Yi L, Rui-feng C, Xiu-li Z, Shu-wang H, Jin W, Yu-jia Z, Lu-lu W, Wen-sheng Z. Preparation of pectin-chitosan hydrogels based on bioadhesive-design micelle to prompt bacterial infection wound healing. Carbohydr Polym 2022; 300:120272. [DOI: 10.1016/j.carbpol.2022.120272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 10/17/2022] [Accepted: 10/25/2022] [Indexed: 11/02/2022]
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12
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Wachendörfer M, Schräder P, Buhl EM, Palkowitz AL, Ben Messaoud G, Richtering W, Fischer H. A defined heat pretreatment of gelatin enables control of hydrolytic stability, stiffness, and microstructural architecture of fibrin-gelatin hydrogel blends. Biomater Sci 2022; 10:5552-5565. [PMID: 35969162 DOI: 10.1039/d2bm00214k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fibrin-gelatin hydrogel blends exhibit high potential for tissue engineering in vitro applications. However, the means to tailor these blends in order to control their properties, thus opening up a broad range of new target applications, have been insufficiently explored. We hypothesized that a controlled heat treatment of gelatin prior to blend synthesis enables control of hydrolytic swelling and shrinking, stiffness, and microstructural architecture of fibrin-gelatin based hydrogel blends while providing tremendous long-term stability. We investigated these hydrogel blends' compressive strength, in vitro degradation stability, and microstructure in order to test this hypothesis. In addition, we examined the gel's ability to support endothelial cell proliferation and stretching of encapsulated smooth muscle cells. This research showed that a controlled heat pretreatment of the gelatin component strongly influenced the stiffness, swelling, shrinking, and microstructural architecture of the final blends regardless of identical gelatin mass fractions. All blends offered high long-term hydrolytic stability. In conclusion, the results of this study open the possibility to use this technique in order to tune low-concentrated, open-porous fibrin-based hydrogels, even in long-term tissue engineering in vitro experiments.
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Affiliation(s)
- Mattis Wachendörfer
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, Pauwelsstrasse 30, 52074 Aachen, Germany.
| | - Philipp Schräder
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, Pauwelsstrasse 30, 52074 Aachen, Germany.
| | - Eva Miriam Buhl
- Electron Microscopy Facility, Institute of Pathology, RWTH Aachen University Hospital, Pauwelsstrasse 30, 52074 Aachen, Germany
| | - Alena L Palkowitz
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, Pauwelsstrasse 30, 52074 Aachen, Germany.
| | - Ghazi Ben Messaoud
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52074 Aachen, Germany.,DWI-Leibniz Institute for Interactive Materials, Forckenbeckstr. 50, 52074 Aachen, Germany
| | - Walter Richtering
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52074 Aachen, Germany.,DWI-Leibniz Institute for Interactive Materials, Forckenbeckstr. 50, 52074 Aachen, Germany
| | - Horst Fischer
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, Pauwelsstrasse 30, 52074 Aachen, Germany.
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Surendranath M, M R R, Parameswaran R. Recent advances in functionally modified polymers for mucoadhesive drug delivery. J Mater Chem B 2022; 10:5913-5924. [PMID: 35880449 DOI: 10.1039/d2tb00856d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel methods for the delivery of drugs other than the conventional method of oral administration have been a thrust area of research for a few decades. Mucoadhesive delivery of drugs opened up a new domain where rapid and patient-friendly delivery of drugs can be achieved. Delivery of drugs through the mucosal sites such as buccal, nasal, ocular, sublingual, rectal and vaginal facilitates bypassing the first-pass metabolism and the drug reaches the systemic circulation directly. This helps to increase the bioavailability of the drug. The study of the chemical characteristics of polymers with mucoadhesive properties and how the molecules or the pharmaceuticals are transported across the mucosa is very much needed for the advancement of research in this field. And at the same time, it is very pertinent to know about the anatomy and the physiology of the mucosal tissue and its variation in different regions of the body. In this review, we try to present a comprehensive understanding of relevant topics of mucoadhesion giving more emphasis on the mechanism of transport of drugs across mucosa, and different possible functional modifications of polymers to enhance the property of mucoadhesion.
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Affiliation(s)
- Medha Surendranath
- Division of Polymeric Medical Devices, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India.
| | - Rekha M R
- Division of Biosurface Technology, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India
| | - Ramesh Parameswaran
- Division of Polymeric Medical Devices, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India.
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Özbaş Z, Özkahraman B, Akgüner ZP, Bal-Öztürk A. Evaluation of modified pectin/alginate buccal patches with enhanced mucoadhesive properties for drug release systems: In-vitro and ex-vivo study. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2021.102991] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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15
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Guarnizo-Herrero V, Torrado-Salmerón C, Torres Pabón NS, Torrado Durán G, Morales J, Torrado-Santiago S. Study of Different Chitosan/Sodium Carboxymethyl Cellulose Proportions in the Development of Polyelectrolyte Complexes for the Sustained Release of Clarithromycin from Matrix Tablets. Polymers (Basel) 2021; 13:polym13162813. [PMID: 34451351 PMCID: PMC8400629 DOI: 10.3390/polym13162813] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Revised: 08/18/2021] [Accepted: 08/19/2021] [Indexed: 11/19/2022] Open
Abstract
This study investigated the combination of different proportions of cationic chitosan and anionic carboxymethyl cellulose (CMC) for the development of polyelectrolyte complexes to be used as a carrier in a sustained-release system. Analysis via scanning electron microscopy (SEM) Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), and powder X-ray diffraction (PXRD) confirmed ionic interactions occur between the chitosan and carboxymethyl cellulose chains, which increases drug entrapment. The results of the dissolution study in acetate buffer (pH 4.2) showed significant increases in the kinetic profiles of clarithromycin for low proportions of chitosan/carboxymethyl cellulose tablets, while the tablets containing only chitosan had high relaxation of chitosan chains and disintegrated rapidly. The Korsmeyer–Peppas kinetic model for the different interpolymer complexes demonstrated that the clarithromycin transport mechanism was controlled by Fickian diffusion. These results suggest that the matrix tablets with different proportions of chitosan/carboxymethyl cellulose enhanced the ionic interaction and enabled the prolonged release of clarithromycin.
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Affiliation(s)
- Víctor Guarnizo-Herrero
- Department of Pharmaceutics and Food Technology, Faculty of Pharmacy, Complutense University, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain; (V.G.-H.); (C.T.-S.)
| | - Carlos Torrado-Salmerón
- Department of Pharmaceutics and Food Technology, Faculty of Pharmacy, Complutense University, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain; (V.G.-H.); (C.T.-S.)
| | - Norma Sofía Torres Pabón
- Department of Biomedical Science, Faculty of Pharmacy, University of Alcalá de Henares, Ctra Madrid-Barcelona Km 33,600, 28805 Madrid, Spain; (N.S.T.P.); (G.T.D.)
| | - Guillermo Torrado Durán
- Department of Biomedical Science, Faculty of Pharmacy, University of Alcalá de Henares, Ctra Madrid-Barcelona Km 33,600, 28805 Madrid, Spain; (N.S.T.P.); (G.T.D.)
| | - Javier Morales
- Department of Science and Pharmaceutical Technology, Faculty of Chemical and Pharmaceutical Sciences, University of Chile, Santiago 8380494, Chile;
| | - Santiago Torrado-Santiago
- Department of Pharmaceutics and Food Technology, Faculty of Pharmacy, Complutense University, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain; (V.G.-H.); (C.T.-S.)
- Instituto Universitario de Farmacia Industrial, Complutense University, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain
- Correspondence: ; Tel.: +34-091-394-1620
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