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Preetam S, Ghosh A, Mishra R, Pandey A, Roy DS, Rustagi S, Malik S. Electrical stimulation: a novel therapeutic strategy to heal biological wounds. RSC Adv 2024; 14:32142-32173. [PMID: 39399261 PMCID: PMC11467653 DOI: 10.1039/d4ra04258a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2024] [Accepted: 09/02/2024] [Indexed: 10/15/2024] Open
Abstract
Electrical stimulation (ES) has emerged as a powerful therapeutic modality for enhancing biological wound healing. This non-invasive technique utilizes low-level electrical currents to promote tissue regeneration and expedite the wound healing process. ES has been shown to accelerate wound closure, reduce inflammation, enhance angiogenesis, and modulate cell migration and proliferation through various mechanisms. The principle goal of wound management is the rapid recovery of the anatomical continuity of the skin, to prevent infections from the external environment and maintain homeostasis conditions inside. ES at the wound site is a compelling strategy for skin wound repair. Several ES applications are described in medical literature like AC, DC, and PC to improve cutaneous perfusion and accelerate wound healing. This review aimed to evaluate the primary factors and provides an overview of the potential benefits and mechanisms of ES in wound healing, and its ability to stimulate cellular responses, promote tissue regeneration, and improve overall healing outcomes. We also shed light on the application of ES which holds excellent promise as an adjunct therapy for various types of wounds, including chronic wounds, diabetic ulcers, and surgical incisions.
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Affiliation(s)
- Subham Preetam
- Department of Robotics and Mechatronics Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST) Daegu 42988 Republic of Korea
| | - Arka Ghosh
- KIIT School of Biotechnology, Kalinga Institute of Industrial Technology Bhubaneswar 751003 Odisha India
| | - Richa Mishra
- Department of Computer Engineering, Parul Institute of Engineering and Technology (PIET), Parul University Ta. Waghodia Vadodara Gujarat 391760 India
| | - Arunima Pandey
- KIIT School of Biotechnology, Kalinga Institute of Industrial Technology Bhubaneswar 751003 Odisha India
| | - Debanjan Singha Roy
- KIIT School of Biotechnology, Kalinga Institute of Industrial Technology Bhubaneswar 751003 Odisha India
| | - Sarvesh Rustagi
- School of Applied and Life Sciences, Uttaranchal University 22 Dehradun Uttarakhand India
| | - Sumira Malik
- Amity Institute of Biotechnology, Amity University Jharkhand Ranchi Jharkhand 834001 India
- Department of Biotechnology, University Center for Research & Development (UCRD) Chandigarh University Ludhiana Highway Mohali 140413 Punjab India
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2
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Golbabaei MH, Varnoosfaderani MS, Hemmati F, Barati MR, Pishbin F, Seyyed Ebrahimi SA. Machine learning-guided morphological property prediction of 2D electrospun scaffolds: the effect of polymer chemical composition and processing parameters. RSC Adv 2024; 14:15178-15199. [PMID: 38737974 PMCID: PMC11082644 DOI: 10.1039/d4ra01257g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Accepted: 04/27/2024] [Indexed: 05/14/2024] Open
Abstract
Among various methods for fabricating polymeric tissue engineering scaffolds, electrospinning stands out as a relatively simple technique widely utilized in research. Numerous studies have delved into understanding how electrospinning processing parameters and specific polymeric solutions affect the physical features of the resulting scaffolds. However, owing to the complexity of these interactions, no definitive approaches have emerged. This study introduces the use of Simplified Molecular Input Line Entry System (SMILES) encoding method to represent materials, coupled with machine learning algorithms, to model the relationships between material properties, electrospinning parameters and scaffolds' physical properties. Here, the scaffolds' fiber diameter and conductivity have been predicted for the first time using this approach. In the classification task, the voting classifier predicted the fibers diameter with a balanced accuracy score of 0.9478. In the regression task, a neural network regressor was architected to learn the relations between parameters and predict the fibers diameter with R2 = 0.723. In the case of fibers conductivity, regressor and classifier models were used for prediction, but the performance fluctuated due to the inadequate information in the published data and the collected dataset. Finally, the model prediction accuracy was validated by experimental electrospinning of a biocompatible polymer (i.e., polyvinyl alcohol and polyvinyl alcohol/polypyrrole). Field-emission scanning electron microscope (FE-SEM) images were used to measure fiber diameter. These results demonstrated the efficacy of the proposed model in predicting the polymer nanofiber diameter and reducing the parameter space prior to the scoping exercises. This data-driven model can be readily extended to the electrospinning of various biopolymers.
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Affiliation(s)
- Mohammad Hossein Golbabaei
- School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran Tehran Iran +98 21 88006076 +98 21 61114065
| | | | - Farshid Hemmati
- School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran Tehran Iran +98 21 88006076 +98 21 61114065
| | - Mohammad Reza Barati
- School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran Tehran Iran +98 21 88006076 +98 21 61114065
| | - Fatemehsadat Pishbin
- School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran Tehran Iran +98 21 88006076 +98 21 61114065
| | - Seyyed Ali Seyyed Ebrahimi
- Advanced Magnetic Materials Research Center, School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran Tehran Iran +98 21 88006076 +98 21 88225374
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3
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Shokrollahi P, Omidi Y, Cubeddu LX, Omidian H. Conductive polymers for cardiac tissue engineering and regeneration. J Biomed Mater Res B Appl Biomater 2023; 111:1979-1995. [PMID: 37306139 DOI: 10.1002/jbm.b.35293] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 05/17/2023] [Accepted: 05/31/2023] [Indexed: 06/13/2023]
Abstract
Cardiovascular diseases, such as myocardial infarction, are considered a significant global burden and the leading cause of death. Given the inability of damaged cardiac tissue to self-repair, cell-based tissue engineering and regeneration may be the only viable option for restoring normal heart function. To maintain the normal excitation-contraction coupling function of cardiac tissue, uniform electronic and ionic conductance properties are required. To transport cells to damaged cardiac tissues, several techniques, including the incorporation of cells into conductive polymers (CPs) and biomaterials, have been utilized. Due to the complexity of cardiac tissues, the success of tissue engineering for the damaged heart is highly dependent on several variables, such as the cell source, growth factors, and scaffolds. In this review, we sought to provide a comprehensive overview of the electro CPs and biomaterials used in the engineering and regeneration of heart tissue.
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Affiliation(s)
- Parvin Shokrollahi
- Centre for Ocular Research & Education, School of Optometry & Vision Science, University of Waterloo, Waterloo, Canada
| | - Yadollah Omidi
- Department of Pharmaceutical Sciences, Barry and Judy Silverman College of Pharmacy, Nova Southeastern University, Fort Lauderdale, Florida, USA
| | - Luigi X Cubeddu
- Department of Pharmaceutical Sciences, Barry and Judy Silverman College of Pharmacy, Nova Southeastern University, Fort Lauderdale, Florida, USA
| | - Hossein Omidian
- Department of Pharmaceutical Sciences, Barry and Judy Silverman College of Pharmacy, Nova Southeastern University, Fort Lauderdale, Florida, USA
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4
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Eskandani M, Derakhshankhah H, Jahanban-Esfahlan R, Jaymand M. Biomimetic alginate-based electroconductive nanofibrous scaffolds for bone tissue engineering application. Int J Biol Macromol 2023; 249:125991. [PMID: 37499719 DOI: 10.1016/j.ijbiomac.2023.125991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 06/11/2023] [Accepted: 07/24/2023] [Indexed: 07/29/2023]
Abstract
Novel electrically conductive nanofibrous scaffolds were designed and fabricated through the grafting of aniline monomer onto a phenylamine-functionalized alginate (Alg-NH2) followed by electrospinning with poly(vinyl alcohol) (PVA). Performance of the prepared scaffolds in bone tissue engineering (TE) were studied in terms of physicochemical (e.g., conductivity, electroactivity, morphology, hydrophilicity, water uptake, and mechanical) and biological (cytocompatibility, in vitro biodegradability, cells attachment and proliferation, hemolysis, and protein adsorption) properties. The contact angles of the scaffolds with water drop were obtained about 50 to 60° that confirmed their excellent hydrophilicities for TE applications. Three dimensional (3D), inter-connected and uniform porous structures of the scaffolds without any bead formation was confirmed by scanning electron microscopy (SEM). Electrical conductivities of the fabricated scaffolds were obtained as 1.5 × 10-3 and 2.7 × 10-3 Scm-1. MTT assay results revealed that the scaffolds have acceptable cytocompatibilities and can enhance the cells adhesion as well as proliferation, which approved their potential for TE applications. Hemolysis rate of the developed scaffolds were quantified <2 % even at high concentration (200 μgmL-1) of samples that approved their hemocompatibilities. The scaffolds were also exhibited acceptable protein adsorption capacities (65 and 68 μgmg-1). As numerous experimental results, the developed scaffolds have acceptable potential for bone TE.
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Affiliation(s)
- Morteza Eskandani
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hossein Derakhshankhah
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Rana Jahanban-Esfahlan
- Department of Medical Biotechnology, School of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mehdi Jaymand
- Nano Drug Delivery Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran; Student Research Committee, Kermanshah University of Medical Sciences, Kermanshah, Iran.
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5
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Fortunato A, Hensel RC, Casalini S, Mba M. Self-Assembly and Electrical Conductivity of a New [1]benzothieno[3,2-b][1]-benzothiophene (BTBT)-Peptide Hydrogel. Molecules 2023; 28:molecules28072917. [PMID: 37049680 PMCID: PMC10095725 DOI: 10.3390/molecules28072917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/22/2023] [Accepted: 03/22/2023] [Indexed: 03/29/2023] Open
Abstract
The conjugation of small-molecule semiconductors with self-assembling peptides is a powerful tool for the fabrication of supramolecular soft materials for organic electronics and bioelectronics. Herein, we introduced the benchmark organic semiconductor [1]benzothieno[3,2-b][1]-benzothiophene (BTBT) within the structure of a self-assembling amphipathic peptide. The molecular structure of the conjugate was rationally designed to favour π-π stacking between BTBT cores and π-delocalization within the self-assembled architectures. Hydrogels with fibrillar structure were obtained upon self-assembly. Spectroscopic studies confirmed that both hydrogen bonding between peptide segments and π-π stacking between BTBT chromophores are responsible for the formation of the 3D fibrillar network observed by transmission electron microscopy. The hydrogel was successfully deposited on gold interdigitated electrodes and a conductivity up to 1.6 (±0.1) × 10−5 S cm−1 was measured.
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Kaliaraj GS, Shanmugam DK, Dasan A, Mosas KKA. Hydrogels-A Promising Materials for 3D Printing Technology. Gels 2023; 9:gels9030260. [PMID: 36975708 PMCID: PMC10048566 DOI: 10.3390/gels9030260] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 03/15/2023] [Accepted: 03/20/2023] [Indexed: 03/29/2023] Open
Abstract
Hydrogels are a promising material for a variety of applications after appropriate functional and structural design, which alters the physicochemical properties and cell signaling pathways of the hydrogels. Over the past few decades, considerable scientific research has made breakthroughs in a variety of applications such as pharmaceuticals, biotechnology, agriculture, biosensors, bioseparation, defense, and cosmetics. In the present review, different classifications of hydrogels and their limitations have been discussed. In addition, techniques involved in improving the physical, mechanical, and biological properties of hydrogels by admixing various organic and inorganic materials are explored. Future 3D printing technology will substantially advance the ability to pattern molecules, cells, and organs. With significant potential for producing living tissue structures or organs, hydrogels can successfully print mammalian cells and retain their functionalities. Furthermore, recent advances in functional hydrogels such as photo- and pH-responsive hydrogels and drug-delivery hydrogels are discussed in detail for biomedical applications.
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Affiliation(s)
- Gobi Saravanan Kaliaraj
- Centre for Nanoscience and Nanotechnology, Sathyabama Institute of Science and Technology, Chennai 600 119, India
| | - Dilip Kumar Shanmugam
- Centre for Nanoscience and Nanotechnology, Sathyabama Institute of Science and Technology, Chennai 600 119, India
| | - Arish Dasan
- FunGlass-Centre for Functional and Surface Functionalised Glass, Alexander Dubcek University of Trencin, 91150 Trencin, Slovakia
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7
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Heng BC, Bai Y, Li X, Meng Y, Lu Y, Zhang X, Deng X. The bioelectrical properties of bone tissue. Animal Model Exp Med 2023; 6:120-130. [PMID: 36856186 PMCID: PMC10158952 DOI: 10.1002/ame2.12300] [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: 07/15/2022] [Accepted: 11/18/2022] [Indexed: 03/02/2023] Open
Abstract
Understanding the bioelectrical properties of bone tissue is key to developing new treatment strategies for bone diseases and injuries, as well as improving the design and fabrication of scaffold implants for bone tissue engineering. The bioelectrical properties of bone tissue can be attributed to the interaction of its various cell lineages (osteocyte, osteoblast and osteoclast) with the surrounding extracellular matrix, in the presence of various biomechanical stimuli arising from routine physical activities; and is best described as a combination and overlap of dielectric, piezoelectric, pyroelectric and ferroelectric properties, together with streaming potential and electro-osmosis. There is close interdependence and interaction of the various electroactive and electrosensitive components of bone tissue, including cell membrane potential, voltage-gated ion channels, intracellular signaling pathways, and cell surface receptors, together with various matrix components such as collagen, hydroxyapatite, proteoglycans and glycosaminoglycans. It is the remarkably complex web of interactive cross-talk between the organic and non-organic components of bone that define its electrophysiological properties, which in turn exerts a profound influence on its metabolism, homeostasis and regeneration in health and disease. This has spurred increasing interest in application of electroactive scaffolds in bone tissue engineering, to recapitulate the natural electrophysiological microenvironment of healthy bone tissue to facilitate bone defect repair.
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Affiliation(s)
- Boon Chin Heng
- Department of Dental Materials & Dental Medical Devices Testing Center, Peking University School and Hospital of Stomatology, Beijing, PR China.,Central Laboratory, Peking University School and Hospital of Stomatology, Beijing, PR China.,School of Medical and Life Sciences, Sunway University, Subang Jaya, Malaysia
| | - Yunyang Bai
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, PR China
| | - Xiaochan Li
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, PR China
| | - Yanze Meng
- Department of Dental Materials & Dental Medical Devices Testing Center, Peking University School and Hospital of Stomatology, Beijing, PR China
| | - Yanhui Lu
- Department of Dental Materials & Dental Medical Devices Testing Center, Peking University School and Hospital of Stomatology, Beijing, PR China
| | - Xuehui Zhang
- Department of Dental Materials & Dental Medical Devices Testing Center, Peking University School and Hospital of Stomatology, Beijing, PR China.,National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, NMPA Key Laboratory for Dental Materials, Beijing Laboratory of Biomedical Materials & Beijing Key Laboratory of Digital Stomatology, Peking University School and Hospital of Stomatology, Beijing, People's Republic of China
| | - Xuliang Deng
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, PR China.,National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, NMPA Key Laboratory for Dental Materials, Beijing Laboratory of Biomedical Materials & Beijing Key Laboratory of Digital Stomatology, Peking University School and Hospital of Stomatology, Beijing, People's Republic of China
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8
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Azizi M, Shavandi A, Hamidi M, Gholizadeh S, Mohammadpour M, Salami MS, Samadian H. Fabrication, characterization and biological properties evaluation of bioactive scaffold based on mineralized carbon nanofibers. J Biomol Struct Dyn 2023; 41:12120-12127. [PMID: 36645133 PMCID: PMC10349904 DOI: 10.1080/07391102.2023.2166117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 01/01/2023] [Indexed: 01/17/2023]
Abstract
Tissue engineering as an innovative approach aims to combine engineering, biomaterials and biomedicine to eliminate the drawbacks of conventional bone defect treatment. In the current study, we fabricated bioengineered electroactive and bioactive mineralized carbon nanofibers as the scaffold for bone tissue engineering applications. The scaffold was fabricated using the sol-gel method and thoroughly characterized by SEM imaging, EDX analysis and a 4-point probe. The results showed that the CNFs have a diameter of 200 ± 19 nm and electrical conductivity of 1.02 ± 0.12 S cm-1. The in vitro studies revealed that the synthesized CNFs were osteoactive and supported the mineral crystal deposition. The hemolysis study confirmed the hemocompatibility of the CNFs and cell viability/proliferation sassy using an MTT assay kit showed the proliferative activities of mineralized CNFs. In conclusion, this study revealed that the mineralized CNFs synthesized by the combination of sol-gel and electrospinning techniques were electroactive, osteoactive and biocompatible, which can be considered an effective bone tissue engineering scaffold.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Mehdi Azizi
- Dental Implants Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Amin Shavandi
- Université libre de Bruxelles (ULB), École polytechnique de Bruxelles, 3BIO-BioMatter, Avenue F.D. Roosevelt, 50 - CP 165/61, 1050 Brussels, Belgium
| | - Masoud Hamidi
- Université libre de Bruxelles (ULB), École polytechnique de Bruxelles, 3BIO-BioMatter, Avenue F.D. Roosevelt, 50 - CP 165/61, 1050 Brussels, Belgium
- Department of Medical Biotechnology, Faculty of Paramedicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Shayan Gholizadeh
- Department of Biomedical Engineering, Rochester Institute of Technology, Rochester, NY, USA
| | - Mahnaz Mohammadpour
- Department of Chemistry, Faculty of Sciences, Tarbiat Modares University, Tehran, Iran
| | - Mohammad Saeid Salami
- Nano Drug Delivery Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Hadi Samadian
- Research Center for Molecular Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
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9
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Sithole MN, Mndlovu H, du Toit LC, Choonara YE. Advances in Stimuli-responsive Hydrogels for Tissue Engineering and Regenerative Medicine Applications: A Review Towards Improving Structural Design for 3D Printing. Curr Pharm Des 2023; 29:3187-3205. [PMID: 37779402 DOI: 10.2174/0113816128246888230920060802] [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: 03/08/2023] [Revised: 06/17/2023] [Accepted: 07/14/2023] [Indexed: 10/03/2023]
Abstract
The physicochemical properties of polymeric hydrogels render them attractive for the development of 3D printed prototypes for tissue engineering in regenerative medicine. Significant effort has been made to design hydrogels with desirable attributes that facilitate 3D printability. In addition, there is significant interest in exploring stimuli-responsive hydrogels to support automated 3D printing into more structurally organised prototypes such as customizable bio-scaffolds for regenerative medicine applications. Synthesizing stimuli-responsive hydrogels is dependent on the type of design and modulation of various polymeric materials to open novel opportunities for applications in biomedicine and bio-engineering. In this review, the salient advances made in the design of stimuli-responsive polymeric hydrogels for 3D printing in tissue engineering are discussed with a specific focus on the different methods of manipulation to develop 3D printed stimuli-responsive polymeric hydrogels. Polymeric functionalisation, nano-enabling and crosslinking are amongst the most common manipulative attributes that affect the assembly and structure of 3D printed bio-scaffolds and their stimuli- responsiveness. The review also provides a concise incursion into the various applications of stimuli to enhance the automated production of structurally organized 3D printed medical prototypes.
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Affiliation(s)
- Mduduzi Nkosinathi Sithole
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg, Gauteng, 2193, South Africa
| | - Hillary Mndlovu
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg, Gauteng, 2193, South Africa
| | - Lisa C du Toit
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg, Gauteng, 2193, South Africa
| | - Yahya Essop Choonara
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg, Gauteng, 2193, South Africa
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10
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Heng BC, Bai Y, Li X, Lim LW, Li W, Ge Z, Zhang X, Deng X. Electroactive Biomaterials for Facilitating Bone Defect Repair under Pathological Conditions. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2204502. [PMID: 36453574 PMCID: PMC9839869 DOI: 10.1002/advs.202204502] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 10/24/2022] [Indexed: 06/02/2023]
Abstract
Bone degeneration associated with various diseases is increasing due to rapid aging, sedentary lifestyles, and unhealthy diets. Living bone tissue has bioelectric properties critical to bone remodeling, and bone degeneration under various pathological conditions results in significant changes to these bioelectric properties. There is growing interest in utilizing biomimetic electroactive biomaterials that recapitulate the natural electrophysiological microenvironment of healthy bone tissue to promote bone repair. This review first summarizes the etiology of degenerative bone conditions associated with various diseases such as type II diabetes, osteoporosis, periodontitis, osteoarthritis, rheumatoid arthritis, osteomyelitis, and metastatic osteolysis. Next, the diverse array of natural and synthetic electroactive biomaterials with therapeutic potential are discussed. Putative mechanistic pathways by which electroactive biomaterials can mitigate bone degeneration are critically examined, including the enhancement of osteogenesis and angiogenesis, suppression of inflammation and osteoclastogenesis, as well as their anti-bacterial effects. Finally, the limited research on utilization of electroactive biomaterials in the treatment of bone degeneration associated with the aforementioned diseases are examined. Previous studies have mostly focused on using electroactive biomaterials to treat bone traumatic injuries. It is hoped that this review will encourage more research efforts on the use of electroactive biomaterials for treating degenerative bone conditions.
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Affiliation(s)
- Boon Chin Heng
- Central LaboratoryPeking University School and Hospital of StomatologyBeijing100081P. R. China
- School of Medical and Life SciencesSunway UniversityDarul EhsanSelangor47500Malaysia
| | - Yunyang Bai
- Department of Geriatric DentistryPeking University School and Hospital of StomatologyBeijing100081P. R. China
| | - Xiaochan Li
- Department of Geriatric DentistryPeking University School and Hospital of StomatologyBeijing100081P. R. China
| | - Lee Wei Lim
- Neuromodulation LaboratorySchool of Biomedical SciencesLi Ka Shing Faculty of MedicineThe University of Hong KongPokfulamHong KongP. R. China
| | - Wang Li
- Department of Biomedical EngineeringPeking UniversityBeijing100871P. R. China
| | - Zigang Ge
- Department of Biomedical EngineeringPeking UniversityBeijing100871P. R. China
| | - Xuehui Zhang
- Department of Dental Materials & Dental Medical Devices Testing CenterPeking University School and Hospital of StomatologyBeijing100081P. R. China
- National Engineering Research Center of Oral Biomaterials and Digital Medical DevicesNMPA Key Laboratory for Dental MaterialsBeijing Laboratory of Biomedical Materials & Beijing Key Laboratory of Digital StomatologyPeking University School and Hospital of StomatologyBeijing100081P. R. China
| | - Xuliang Deng
- Department of Geriatric DentistryPeking University School and Hospital of StomatologyBeijing100081P. R. China
- Department of Dental Materials & Dental Medical Devices Testing CenterPeking University School and Hospital of StomatologyBeijing100081P. R. China
- National Engineering Research Center of Oral Biomaterials and Digital Medical DevicesNMPA Key Laboratory for Dental MaterialsBeijing Laboratory of Biomedical Materials & Beijing Key Laboratory of Digital StomatologyPeking University School and Hospital of StomatologyBeijing100081P. R. China
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11
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Terranova ML. Key Challenges in Diamond Coating of Titanium Implants: Current Status and Future Prospects. Biomedicines 2022; 10:biomedicines10123149. [PMID: 36551907 PMCID: PMC9775193 DOI: 10.3390/biomedicines10123149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 11/26/2022] [Accepted: 11/28/2022] [Indexed: 12/12/2022] Open
Abstract
Over past years, the fabrication of Ti-based permanent implants for fracture fixation, joint replacement and bone or tooth substitution, has become a routine task. However, it has been found that some degradation phenomena occurring on the Ti surface limits the life or the efficiency of the artificial constructs. The task of avoiding such adverse effects, to prevent microbial colonization and to accelerate osteointegration, is being faced by a variety of approaches in order to adapt Ti surfaces to the needs of osseous tissues. Among the large set of biocompatible materials proposed as an interface between Ti and the hosting tissue, diamond has been proven to offer bioactive and mechanical properties able to match the specific requirements of osteoblasts. Advances in material science and implant engineering are now enabling us to produce micro- or nano-crystalline diamond coatings on a variety of differently shaped Ti constructs. The aim of this paper is to provide an overview of the research currently ongoing in the field of diamond-coated orthopedic Ti implants and to examine the evolution of the concepts that are accelerating the full transition of such technology from the laboratory to clinical applications.
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Affiliation(s)
- Maria Letizia Terranova
- Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma Tor Vergata, Via della Ricerca Scientifica, 00133 Roma, Italy; or
- Centro di Ricerca Interdipartimentale di Medicina Rigenerativa (CIMER), Università di Roma Tor Vergata, Via della Ricerca Scientifica, 00133 Roma, Italy
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12
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Agrawal L, Vimal SK, Barzaghi P, Shiga T, Terenzio M. Biodegradable and Electrically Conductive Melanin-Poly (3-Hydroxybutyrate) 3D Fibrous Scaffolds for Neural Tissue Engineering Applications. Macromol Biosci 2022; 22:e2200315. [PMID: 36114714 DOI: 10.1002/mabi.202200315] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Indexed: 01/15/2023]
Abstract
Due to the severity of peripheral nerve injuries (PNI) and spinal cord injuries (SCI), treatment options for patients are limited. In this context, biomaterials designed to promote regeneration and reinstate the lost function are being explored. Such biomaterials should be able to mimic the biological, chemical, and physical cues of the extracellular matrix for maximum effectiveness as therapeutic agents. Development of biomaterials with desirable physical, chemical, and electrical properties, however, has proven challenging. Here a novel biomaterial formulation achieved by blending the pigment melanin and the natural polymer Poly-3-hydroxybutyrate (PHB) is proposed. Physio-chemical measurements of electrospun fibers reveal a feature rich surface nano-topography, a semiconducting-nature, and brain-tissue-like poroviscoelastic properties. Resulting fibers improve cell adhesion and growth of mouse sensory and motor neurons, without any observable toxicity. Further, the presence of polar functional groups positively affect the kinetics of fibers degradation at a pH (≈7.4) comparable to that of body fluids. Thus, melanin-PHB blended scaffolds are found to be physio-chemically, electrically, and biologically compatible with neural tissues and could be used as a regenerative modality for neural tissue injuries. A biomaterial for scaffolds intended to promote regeneration of nerve tissue after injury is developed. This biomaterial, obtained by mixing the pigment melanin and the natural polymer PHB, is biodegradable, electrically conductive, and beneficial to the growth of motor and sensory neurons. Thus, it is believed that this biomaterial can be used in the context of healthcare applications.
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Affiliation(s)
- Lokesh Agrawal
- Molecular Neuroscience Unit, Okinawa Institute of Science and Technology Graduate University, Kunigami-gun, Okinawa, 904-0412, Japan.,Graduate School of Comprehensive Human Sciences Kansei, Behavioral and Brain Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8577, Japan
| | - Sunil Kumar Vimal
- Department of Pharmaceutical Sciences, Southwest University, Chongqing, 400715, P. R. China.,Universidad Integral del Caribe y América Latina, Kaminda Cas Grandi #79, Willemstad, Curacao
| | - Paolo Barzaghi
- Scientific Imaging Section, Okinawa Institute of Science and Technology Graduate University, Kunigami-gun, Okinawa, 904-0412, Japan
| | - Takashi Shiga
- Graduate School of Comprehensive Human Sciences Kansei, Behavioral and Brain Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8577, Japan.,Department of Neurobiology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8577, Japan
| | - Marco Terenzio
- Molecular Neuroscience Unit, Okinawa Institute of Science and Technology Graduate University, Kunigami-gun, Okinawa, 904-0412, Japan
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13
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Serafin A, Rubio MC, Carsi M, Ortiz-Serna P, Sanchis MJ, Garg AK, Oliveira JM, Koffler J, Collins MN. Electroconductive PEDOT nanoparticle integrated scaffolds for spinal cord tissue repair. Biomater Res 2022; 26:63. [DOI: 10.1186/s40824-022-00310-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 10/27/2022] [Indexed: 11/24/2022] Open
Abstract
Abstract
Background
Hostile environment around the lesion site following spinal cord injury (SCI) prevents the re-establishment of neuronal tracks, thus significantly limiting the regenerative capability. Electroconductive scaffolds are emerging as a promising option for SCI repair, though currently available conductive polymers such as polymer poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) present poor biofunctionality and biocompatibility, thus limiting their effective use in SCI tissue engineering (TE) treatment strategies.
Methods
PEDOT NPs were synthesized via chemical oxidation polymerization in miniemulsion. The conductive PEDOT NPs were incorporated with gelatin and hyaluronic acid (HA) to create gel:HA:PEDOT-NPs scaffolds. Morphological analysis of both PEDOT NPs and scaffolds was conducted via SEM. Further characterisation included dielectric constant and permittivity variances mapped against morphological changes after crosslinking, Young’s modulus, FTIR, DLS, swelling studies, rheology, in-vitro, and in-vivo biocompatibility studies were also conducted.
Results
Incorporation of PEDOT NPs increased the conductivity of scaffolds to 8.3 × 10–4 ± 8.1 × 10–5 S/cm. The compressive modulus of the scaffold was tailored to match the native spinal cord at 1.2 ± 0.2 MPa, along with controlled porosity. Rheological studies of the hydrogel showed excellent 3D shear-thinning printing capabilities and shape fidelity post-printing. In-vitro studies showed the scaffolds are cytocompatible and an in-vivo assessment in a rat SCI lesion model shows glial fibrillary acidic protein (GFAP) upregulation not directly in contact with the lesion/implantation site, with diminished astrocyte reactivity. Decreased levels of macrophage and microglia reactivity at the implant site is also observed. This positively influences the re-establishment of signals and initiation of healing mechanisms. Observation of axon migration towards the scaffold can be attributed to immunomodulatory properties of HA in the scaffold caused by a controlled inflammatory response. HA limits astrocyte activation through its CD44 receptors and therefore limits scar formation. This allows for a superior axonal migration and growth towards the targeted implantation site through the provision of a stimulating microenvironment for regeneration.
Conclusions
Based on these results, the incorporation of PEDOT NPs into Gel:HA biomaterial scaffolds enhances not only the conductive capabilities of the material, but also the provision of a healing environment around lesions in SCI. Hence, gel:HA:PEDOT-NPs scaffolds are a promising TE option for stimulating regeneration for SCI.
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14
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Kodolova-Chukhontseva VV, Shishov MA, Kolbe KA, Smirnova NV, Dobrovol’skaya IP, Dresvyanina EN, Bystrov SG, Terebova NS, Kamalov AM, Bursian AE, Ivan’kova EM, Yudin VE. Conducting Composite Material Based on Chitosan and Single-Wall Carbon Nanotubes for Cellular Technologies. Polymers (Basel) 2022; 14:polym14163287. [PMID: 36015544 PMCID: PMC9413541 DOI: 10.3390/polym14163287] [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: 07/22/2022] [Revised: 08/08/2022] [Accepted: 08/09/2022] [Indexed: 11/17/2022] Open
Abstract
Biocompatible electrically conducting chitosan-based films filled with single-wall carbon nanotubes were obtained. Atomic force microscopic studies of the free surface topography revealed a change in the morphology of chitosan films filled with single-wall carbon nanotubes. Introducing 0.5 wt.% of single-wall carbon nanotubes into chitosan results in an increase in tensile strength of the films (up to ~180 MPa); the tensile strain values also rise up to ~60%. It was demonstrated that chitosan films containing 0.1–3.0 wt.% of single-wall carbon nanotubes have higher conductivity (10 S/m) than pure chitosan films (10−11 S/m). The investigation of electrical stimulation of human dermal fibroblasts on chitosan/single-wall carbon nanotubes film scaffolds showed that the biological effect of cell electrical stimulation depends on the content of single-walled carbon nanotubes in the chitosan matrix.
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Affiliation(s)
- Vera Vladimirovna Kodolova-Chukhontseva
- Research Laboratory “Polymer Materials for Tissue Engineering and Transplantology”, Institute of Biomedical Systems and Biotechnology, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya Street, 29, 195251 Saint-Petersburg, Russia
| | - Mikhail Alexandrovich Shishov
- Research Laboratory “Polymer Materials for Tissue Engineering and Transplantology”, Institute of Biomedical Systems and Biotechnology, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya Street, 29, 195251 Saint-Petersburg, Russia
| | - Konstantin Andreevich Kolbe
- Laboratory No 8—Mechanics of Polymers and Composite, Institute of Macromolecular Compounds Russian Academy of Science, V.O., Bolshoy pr. 31, 199004 Saint-Petersburg, Russia
| | - Natalia Vladimirovna Smirnova
- Laboratory No 8—Mechanics of Polymers and Composite, Institute of Macromolecular Compounds Russian Academy of Science, V.O., Bolshoy pr. 31, 199004 Saint-Petersburg, Russia
| | - Irina Petrovna Dobrovol’skaya
- Research Laboratory “Polymer Materials for Tissue Engineering and Transplantology”, Institute of Biomedical Systems and Biotechnology, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya Street, 29, 195251 Saint-Petersburg, Russia
| | - Elena Nikolaevna Dresvyanina
- Research Laboratory “Polymer Materials for Tissue Engineering and Transplantology”, Institute of Biomedical Systems and Biotechnology, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya Street, 29, 195251 Saint-Petersburg, Russia
- Institute of Textile and Fashion, Saint Petersburg State University of Industrial Technologies and Design, Bolshaya Morskaya Street, 18, 191186 Saint-Petersburg, Russia
- Correspondence:
| | - Sergei Gennadievich Bystrov
- Department of Physics and Surface Chemistry, Udmurt Federal Research Center UB RAS, Tatiana Baramzina Str., 34, 426067 Izhevsk, Russia
| | - Nadezda Semenovna Terebova
- Department of Physics and Surface Chemistry, Udmurt Federal Research Center UB RAS, Tatiana Baramzina Str., 34, 426067 Izhevsk, Russia
| | - Almaz Maratovich Kamalov
- Research Laboratory “Polymer Materials for Tissue Engineering and Transplantology”, Institute of Biomedical Systems and Biotechnology, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya Street, 29, 195251 Saint-Petersburg, Russia
| | - Anna Ericovna Bursian
- Laboratory No 8—Mechanics of Polymers and Composite, Institute of Macromolecular Compounds Russian Academy of Science, V.O., Bolshoy pr. 31, 199004 Saint-Petersburg, Russia
| | - Elena Mikhailovna Ivan’kova
- Laboratory No 8—Mechanics of Polymers and Composite, Institute of Macromolecular Compounds Russian Academy of Science, V.O., Bolshoy pr. 31, 199004 Saint-Petersburg, Russia
| | - Vladimir Evgenievich Yudin
- Research Laboratory “Polymer Materials for Tissue Engineering and Transplantology”, Institute of Biomedical Systems and Biotechnology, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya Street, 29, 195251 Saint-Petersburg, Russia
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15
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Agarwal G, Roy A, Kumar H, Srivastava A. Graphene-collagen cryogel controls neuroinflammation and fosters accelerated axonal regeneration in spinal cord injury. BIOMATERIALS ADVANCES 2022; 139:212971. [PMID: 35882128 DOI: 10.1016/j.bioadv.2022.212971] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 05/11/2022] [Accepted: 06/02/2022] [Indexed: 06/15/2023]
Abstract
Spinal cord injury (SCI) is a devastating condition resulting in loss of motor function. The pathology of SCI is multifaceted and involves a cascade of events, including neuroinflammation and neuronal degeneration at the epicenter, limiting repair process. We developed a supermacroporous, mechanically elastic, electro-conductive, graphene crosslinked collagen (Gr-Col) cryogels for the regeneration of the spinal cord post-injury. The effects of graphene in controlling astrocytes reactivity and microglia polarization are evaluated in spinal cord slice organotypic culture and rat spinal cord lateral hemisection model of SCI. In our work, the application of external electric stimulus results in the enhanced expression of neuronal markers in an organotypic culture. The implantation of Gr-Col cryogels in rat thoracic T9-T11 hemisection model demonstrates an improved functional recovery within 14 days post-injury (DPI), promoted myelination, and decreases the lesion volume at the injury site. Decrease in the expression of STAT3 in the implanted Gr-Col cryogels may be responsible for the decrease in astrocytes reactivity. Microglia cells within the implanted cryogels shows higher anti-inflammatory phenotype (M2) than inflammatory (M1) phenotype. The higher expression of mature axonal markers like β-tubulin III, GAP43, doublecortin, and neurofilament 200 in the implanted Gr-Col cryogel confirms the axonal regeneration after 28 DPI. Gr-Col cryogels also modulate the production of ECM matrix, favouring the axonal regeneration. This study shows that Gr-Col cryogels decreases neuroinflammation and accelerate axonal regeneration.
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Affiliation(s)
- Gopal Agarwal
- Department of Biotechnology, National Institute of Pharmaceutical Educational and Research, Ahmedabad, Gandhinagar, India
| | - Abhishek Roy
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Educational and Research, Ahmedabad, Gandhinagar, India
| | - Hemant Kumar
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Educational and Research, Ahmedabad, Gandhinagar, India.
| | - Akshay Srivastava
- Department of Medical Device, National Institute of Pharmaceutical Educational and Research, Ahmedabad, Gandhinagar, India.
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16
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Abdelbasset WK, Jasim SA, Bokov DO, Shalaby MN, Opulencia MJC, Thangavelu L, Alkadir OKA, Ansari MJ, Kzar HH, Al-Gazally ME. Polysaccharides, as biological macromolecule-based platforms in skeletal muscle tissue engineering: a systematic review. INT J POLYM MATER PO 2022. [DOI: 10.1080/00914037.2022.2090940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Walid Kamal Abdelbasset
- Department of Health and Rehabilitation Sciences, College of Applied Medical Sciences, Prince Sattam Bin Abdulaziz University, Al Kharj, Saudi Arabia
- Department of Physical Therapy, Kasr Al-Aini Hospital, Cairo University, Giza, Egypt
| | - Saade Abdalkareem Jasim
- Medical Laboratory Techniques Department, Al-Maarif University College, Al-Anbar-Ramadi, Iraq
| | - Dmitry Olegovich Bokov
- Institute of Pharmacy, Sechenov First Moscow State Medical University, Moscow, Russia
- Federal Research Center of Nutrition, Biotechnology and Food Safety, Laboratory of Food Chemistry, Moscow, Russia
| | - Mohammed Nader Shalaby
- Biological Sciences and Sports Health Department, Faculty of Physical Education, Suez Canal University, Sheikh Zayed City, Egypt
| | | | - Lakshmi Thangavelu
- Department of Pharmacology, Center for Transdisciplinary Research, Saveetha Dental College, Saveetha Institute of Medical and Technical Science, Saveetha University, Chennai, India
| | | | - Mohammad Javed Ansari
- Department of Pharmaceutics, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj, Saudi Arabia
| | - Hamzah H. Kzar
- College of Veterinary Medicine, Al Qasim Green University, Iraq
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17
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Asri NAN, Mahat MM, Zakaria A, Safian MF, Abd Hamid UM. Fabrication Methods of Electroactive Scaffold-Based Conducting Polymers for Tissue Engineering Application: A Review. Front Bioeng Biotechnol 2022; 10:876696. [PMID: 35875482 PMCID: PMC9300926 DOI: 10.3389/fbioe.2022.876696] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 06/03/2022] [Indexed: 11/19/2022] Open
Abstract
Conductive scaffolds, defined as scaffold systems capable of carrying electric current, have been extensively researched for tissue engineering applications. Conducting polymers (CPs) as components of conductive scaffolds was introduced to improve morphology or cell attachment, conductivity, tissue growth, and healing rate, all of which are beneficial for cardiac, muscle, nerve, and bone tissue management. Conductive scaffolds have become an alternative for tissue replacement, and repair, as well as to compensate for the global organ shortage for transplantation. Previous researchers have presented a wide range of fabrication methods for conductive scaffolds. This review highlights the most recent advances in developing conductive scaffolds, with the aim to trigger more theoretical and experimental work to address the challenges and prospects of these new fabrication techniques in medical sciences.
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Affiliation(s)
- Nurul Ain Najihah Asri
- School of Physics and Material Studies, Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam, Malaysia
| | - Mohd Muzamir Mahat
- School of Physics and Material Studies, Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam, Malaysia
- *Correspondence: Mohd Muzamir Mahat, ; Azlan Zakaria, ; Muhd Fauzi Safian, ; Umi Marshida Abd Hamid,
| | - Azlan Zakaria
- School of Industrial Technology, Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam, Malaysia
- *Correspondence: Mohd Muzamir Mahat, ; Azlan Zakaria, ; Muhd Fauzi Safian, ; Umi Marshida Abd Hamid,
| | - Muhd Fauzi Safian
- School of Chemistry and Environmental Studies, Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam, Malaysia
- *Correspondence: Mohd Muzamir Mahat, ; Azlan Zakaria, ; Muhd Fauzi Safian, ; Umi Marshida Abd Hamid,
| | - Umi Marshida Abd Hamid
- School of Biology, Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam, Malaysia
- *Correspondence: Mohd Muzamir Mahat, ; Azlan Zakaria, ; Muhd Fauzi Safian, ; Umi Marshida Abd Hamid,
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18
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Fan C, Yang W, Zhang L, Cai H, Zhuang Y, Chen Y, Zhao Y, Dai J. Restoration of spinal cord biophysical microenvironment for enhancing tissue repair by injury-responsive smart hydrogel. Biomaterials 2022; 288:121689. [DOI: 10.1016/j.biomaterials.2022.121689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 06/10/2022] [Accepted: 07/18/2022] [Indexed: 11/02/2022]
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19
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Kamalov A, Shishov M, Smirnova N, Kodolova-Chukhontseva V, Dobrovol’skaya I, Kolbe K, Didenko A, Ivan’kova E, Yudin V, Morganti P. Influence of Electric Field on Proliferation Activity of Human Dermal Fibroblasts. J Funct Biomater 2022; 13:89. [PMID: 35893457 PMCID: PMC9326723 DOI: 10.3390/jfb13030089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 06/22/2022] [Accepted: 06/26/2022] [Indexed: 11/16/2022] Open
Abstract
In this work, an electrically conductive composite based on thermoplastic polyimide and graphene was obtained and used as a bioelectrode for electrical stimulation of human dermal fibroblasts. The values of the electrical conductivity of the obtained composite films varied from 10-15 to 102 S/m with increasing graphene content (from 0 to 5.0 wt.%). The characteristics of ionic and electronic currents flowing through the matrix with the superposition of cyclic potentials ± 100 mV were studied. The high stability of the composite was established during prolonged cycling (130 h) in an electric field with a frequency of 0.016 Hz. It was established that the composite films based on polyimide and graphene have good biocompatibility and are not toxic to fibroblast cells. It was shown that preliminary electrical stimulation increases the proliferative activity of human dermal fibroblasts in comparison with intact cells. It is revealed that an electric field with a strength E = 0.02-0.04 V/m applied to the polyimide films containing 0.5-3.0 wt.% of the graphene nanoparticles activates cellular processes (adhesion, proliferation).
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Affiliation(s)
- Almaz Kamalov
- Research Laboratory “Polymer Materials for Tissue Engineering and Transplantology”, Institute of Biomedical Systems and Biotechnology, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya 29, 195251 St. Petersburg, Russia; (M.S.); (N.S.); (V.K.-C.); (I.D.); (K.K.); (A.D.); (E.I.); (V.Y.)
| | - Mikhail Shishov
- Research Laboratory “Polymer Materials for Tissue Engineering and Transplantology”, Institute of Biomedical Systems and Biotechnology, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya 29, 195251 St. Petersburg, Russia; (M.S.); (N.S.); (V.K.-C.); (I.D.); (K.K.); (A.D.); (E.I.); (V.Y.)
| | - Natalia Smirnova
- Research Laboratory “Polymer Materials for Tissue Engineering and Transplantology”, Institute of Biomedical Systems and Biotechnology, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya 29, 195251 St. Petersburg, Russia; (M.S.); (N.S.); (V.K.-C.); (I.D.); (K.K.); (A.D.); (E.I.); (V.Y.)
| | - Vera Kodolova-Chukhontseva
- Research Laboratory “Polymer Materials for Tissue Engineering and Transplantology”, Institute of Biomedical Systems and Biotechnology, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya 29, 195251 St. Petersburg, Russia; (M.S.); (N.S.); (V.K.-C.); (I.D.); (K.K.); (A.D.); (E.I.); (V.Y.)
| | - Irina Dobrovol’skaya
- Research Laboratory “Polymer Materials for Tissue Engineering and Transplantology”, Institute of Biomedical Systems and Biotechnology, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya 29, 195251 St. Petersburg, Russia; (M.S.); (N.S.); (V.K.-C.); (I.D.); (K.K.); (A.D.); (E.I.); (V.Y.)
| | - Konstantin Kolbe
- Research Laboratory “Polymer Materials for Tissue Engineering and Transplantology”, Institute of Biomedical Systems and Biotechnology, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya 29, 195251 St. Petersburg, Russia; (M.S.); (N.S.); (V.K.-C.); (I.D.); (K.K.); (A.D.); (E.I.); (V.Y.)
| | - Andrei Didenko
- Research Laboratory “Polymer Materials for Tissue Engineering and Transplantology”, Institute of Biomedical Systems and Biotechnology, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya 29, 195251 St. Petersburg, Russia; (M.S.); (N.S.); (V.K.-C.); (I.D.); (K.K.); (A.D.); (E.I.); (V.Y.)
| | - Elena Ivan’kova
- Research Laboratory “Polymer Materials for Tissue Engineering and Transplantology”, Institute of Biomedical Systems and Biotechnology, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya 29, 195251 St. Petersburg, Russia; (M.S.); (N.S.); (V.K.-C.); (I.D.); (K.K.); (A.D.); (E.I.); (V.Y.)
| | - Vladimir Yudin
- Research Laboratory “Polymer Materials for Tissue Engineering and Transplantology”, Institute of Biomedical Systems and Biotechnology, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya 29, 195251 St. Petersburg, Russia; (M.S.); (N.S.); (V.K.-C.); (I.D.); (K.K.); (A.D.); (E.I.); (V.Y.)
| | - Pierfrancesco Morganti
- R&D Unit, Academy of History of Healthcare Art, Lungotevere in Sassia 3, 00186 Rome, Italy;
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20
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New approach to prepare cytocompatible 3D scaffolds via the combination of sodium hyaluronate and colloidal particles of conductive polymers. Sci Rep 2022; 12:8065. [PMID: 35577841 PMCID: PMC9110748 DOI: 10.1038/s41598-022-11678-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Accepted: 04/22/2022] [Indexed: 11/08/2022] Open
Abstract
AbstractBio-inspired conductive scaffolds composed of sodium hyaluronate containing a colloidal dispersion of water-miscible polyaniline or polypyrrole particles (concentrations of 0.108, 0.054 and 0.036% w/w) were manufactured. For this purpose, either crosslinking with N-(3-dimethylaminopropyl-N-ethylcarbodiimide hydrochloride and N-hydroxysuccinimid or a freeze-thawing process in the presence of poly(vinylalcohol) was used. The scaffolds comprised interconnected pores with prevailing porosity values of ~ 30% and pore sizes enabling the accommodation of cells. A swelling capacity of 92–97% without any sign of disintegration was typical for all samples. The elasticity modulus depended on the composition of the scaffolds, with the highest value of ~ 50 kPa obtained for the sample containing the highest content of polypyrrole particles. The scaffolds did not possess cytotoxicity and allowed cell adhesion and growth on the surface. Using the in vivo-mimicking conditions in a bioreactor, cells were also able to grow into the structure of the scaffolds. The technique of scaffold preparation used here thus overcomes the limitations of conductive polymers (e.g. poor solubility in an aqueous environment, and limited miscibility with other hydrophilic polymer matrices) and moreover leads to the preparation of cytocompatible scaffolds with potentially cell-instructive properties, which may be of advantage in the healing of damaged electro-sensitive tissues.
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21
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Gao C, Song S, Lv Y, Huang J, Zhang Z. Recent Development of Conductive Hydrogels for Tissue Engineering: Review and Perspective. Macromol Biosci 2022; 22:e2200051. [PMID: 35472125 DOI: 10.1002/mabi.202200051] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 03/29/2022] [Indexed: 11/11/2022]
Abstract
In recent years, tissue engineering techniques have been rapidly developed and offer a new therapeutic approach to organ or tissue damage repair. However, most of tissue engineering scaffolds are nonconductive and cannot establish effective electrical coupling with tissue for the electroactive tissues. Electroconductive hydrogels (ECHs) have received increasing attention in tissue engineering owing to their electroconductivity, biocompatibility and high water content. In vitro, ECHs can not only promote the communication of electrical signals between cells, but also mediate the adhesion, proliferation, migration, and differentiation of different kinds of cells. In vivo, ECHs can transmit the electric signal to electroactive tissues and activate bioelectrical signaling pathways to promote tissue repair. As a result, implanting ECHs into damaged tissues can effectively reconstruct physiological functions related to electrical conduction. In this review, we first present an overview about the classifications and the fabrication methods of ECHs. And then, the applications of ECHs in tissue engineering, including cardiac, nerve, skin and skeletal muscle tissue, are highlighted. At last, we provide some rational guidelines for designing ECHs towards clinical applications. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Chen Gao
- CAS Key Laboratory for Nano-Bio Interface, Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou, 215123, People's Republic of China
| | - Shaoshuai Song
- CAS Key Laboratory for Nano-Bio Interface, Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou, 215123, People's Republic of China.,School of Nano-Tech and Nano-Bionics, University of Science and Technology of China (USTC), Hefei, 230026, People's Republic of China
| | - Yinjuan Lv
- CAS Key Laboratory for Nano-Bio Interface, Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou, 215123, People's Republic of China
| | - Jie Huang
- CAS Key Laboratory for Nano-Bio Interface, Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou, 215123, People's Republic of China.,School of Nano-Tech and Nano-Bionics, University of Science and Technology of China (USTC), Hefei, 230026, People's Republic of China
| | - Zhijun Zhang
- CAS Key Laboratory for Nano-Bio Interface, Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou, 215123, People's Republic of China.,School of Nano-Tech and Nano-Bionics, University of Science and Technology of China (USTC), Hefei, 230026, People's Republic of China
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22
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Pitsalidis C, Pappa AM, Boys AJ, Fu Y, Moysidou CM, van Niekerk D, Saez J, Savva A, Iandolo D, Owens RM. Organic Bioelectronics for In Vitro Systems. Chem Rev 2021; 122:4700-4790. [PMID: 34910876 DOI: 10.1021/acs.chemrev.1c00539] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Bioelectronics have made strides in improving clinical diagnostics and precision medicine. The potential of bioelectronics for bidirectional interfacing with biology through continuous, label-free monitoring on one side and precise control of biological activity on the other has extended their application scope to in vitro systems. The advent of microfluidics and the considerable advances in reliability and complexity of in vitro models promise to eventually significantly reduce or replace animal studies, currently the gold standard in drug discovery and toxicology testing. Bioelectronics are anticipated to play a major role in this transition offering a much needed technology to push forward the drug discovery paradigm. Organic electronic materials, notably conjugated polymers, having demonstrated technological maturity in fields such as solar cells and light emitting diodes given their outstanding characteristics and versatility in processing, are the obvious route forward for bioelectronics due to their biomimetic nature, among other merits. This review highlights the advances in conjugated polymers for interfacing with biological tissue in vitro, aiming ultimately to develop next generation in vitro systems. We showcase in vitro interfacing across multiple length scales, involving biological models of varying complexity, from cell components to complex 3D cell cultures. The state of the art, the possibilities, and the challenges of conjugated polymers toward clinical translation of in vitro systems are also discussed throughout.
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Affiliation(s)
- Charalampos Pitsalidis
- Department of Physics, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi 127788, UAE.,Department of Chemical Engineering and Biotechnology, University of Cambridge Philippa Fawcett Drive, Cambridge CB3 0AS, U.K
| | - Anna-Maria Pappa
- Department of Biomedical Engineering, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi 127788, UAE
| | - Alexander J Boys
- Department of Chemical Engineering and Biotechnology, University of Cambridge Philippa Fawcett Drive, Cambridge CB3 0AS, U.K
| | - Ying Fu
- Department of Chemical Engineering and Biotechnology, University of Cambridge Philippa Fawcett Drive, Cambridge CB3 0AS, U.K.,Department of Pure and Applied Chemistry, Technology and Innovation Centre, University of Strathclyde, Glasgow G1 1RD, U.K
| | - Chrysanthi-Maria Moysidou
- Department of Chemical Engineering and Biotechnology, University of Cambridge Philippa Fawcett Drive, Cambridge CB3 0AS, U.K
| | - Douglas van Niekerk
- Department of Chemical Engineering and Biotechnology, University of Cambridge Philippa Fawcett Drive, Cambridge CB3 0AS, U.K
| | - Janire Saez
- Department of Chemical Engineering and Biotechnology, University of Cambridge Philippa Fawcett Drive, Cambridge CB3 0AS, U.K.,Microfluidics Cluster UPV/EHU, BIOMICs Microfluidics Group, Lascaray Research Center, University of the Basque Country UPV/EHU, Avenida Miguel de Unamuno, 3, 01006 Vitoria-Gasteiz, Spain.,Ikerbasque, Basque Foundation for Science, E-48011 Bilbao, Spain
| | - Achilleas Savva
- Department of Chemical Engineering and Biotechnology, University of Cambridge Philippa Fawcett Drive, Cambridge CB3 0AS, U.K
| | - Donata Iandolo
- INSERM, U1059 Sainbiose, Université Jean Monnet, Mines Saint-Étienne, Université de Lyon, 42023 Saint-Étienne, France
| | - Róisín M Owens
- Department of Chemical Engineering and Biotechnology, University of Cambridge Philippa Fawcett Drive, Cambridge CB3 0AS, U.K
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Züger F, Marsano A, Poggio M, Gullo MR. Nanocomposites in 3D Bioprinting for Engineering Conductive and Stimuli‐Responsive Constructs Mimicking Electrically Sensitive Tissue. ADVANCED NANOBIOMED RESEARCH 2021. [DOI: 10.1002/anbr.202100108] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Affiliation(s)
- Fabian Züger
- Institute for Medical Engineering and Medical Informatics University of Applied Sciences and Arts Northwestern Switzerland Hofackerstrasse 30 Muttenz CH 4312 Switzerland
- Swiss Nanoscience Institute University of Basel Klingelbergstrasse 82 Basel CH 4056 Switzerland
| | - Anna Marsano
- Cardiac Surgery and Engineering Department of Biomedicine University Hospital Basel Basel CH 4031 Switzerland
| | - Martino Poggio
- Nanomechanics and Nanomagnetism Department of Physics University of Basel Basel CH 4056 Switzerland
| | - Maurizio R. Gullo
- 3D bioprinting and biohybrid microsystems University of Applied Sciences and Arts Northwestern Switzerland Hofackerstrasse 30 Muttenz CH 4312 Switzerland
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24
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Tai Y, Banerjee A, Goodrich R, Jin L, Nam J. Development and Utilization of Multifunctional Polymeric Scaffolds for the Regulation of Physical Cellular Microenvironments. Polymers (Basel) 2021; 13:3880. [PMID: 34833179 PMCID: PMC8624881 DOI: 10.3390/polym13223880] [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: 10/20/2021] [Revised: 10/30/2021] [Accepted: 11/06/2021] [Indexed: 12/11/2022] Open
Abstract
Polymeric biomaterials exhibit excellent physicochemical characteristics as a scaffold for cell and tissue engineering applications. Chemical modification of the polymers has been the primary mode of functionalization to enhance biocompatibility and regulate cellular behaviors such as cell adhesion, proliferation, differentiation, and maturation. Due to the complexity of the in vivo cellular microenvironments, however, chemical functionalization alone is usually insufficient to develop functionally mature cells/tissues. Therefore, the multifunctional polymeric scaffolds that enable electrical, mechanical, and/or magnetic stimulation to the cells, have gained research interest in the past decade. Such multifunctional scaffolds are often combined with exogenous stimuli to further enhance the tissue and cell behaviors by dynamically controlling the microenvironments of the cells. Significantly improved cell proliferation and differentiation, as well as tissue functionalities, are frequently observed by applying extrinsic physical stimuli on functional polymeric scaffold systems. In this regard, the present paper discusses the current state-of-the-art functionalized polymeric scaffolds, with an emphasis on electrospun fibers, that modulate the physical cell niche to direct cellular behaviors and subsequent functional tissue development. We will also highlight the incorporation of the extrinsic stimuli to augment or activate the functionalized polymeric scaffold system to dynamically stimulate the cells.
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Affiliation(s)
| | | | | | | | - Jin Nam
- Department of Bioengineering, University of California, Riverside, CA 92521, USA; (Y.T.); (A.B.); (R.G.); (L.J.)
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25
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Ul Haq A, Carotenuto F, De Matteis F, Prosposito P, Francini R, Teodori L, Pasquo A, Di Nardo P. Intrinsically Conductive Polymers for Striated Cardiac Muscle Repair. Int J Mol Sci 2021; 22:8550. [PMID: 34445255 PMCID: PMC8395236 DOI: 10.3390/ijms22168550] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 08/05/2021] [Indexed: 12/12/2022] Open
Abstract
One of the most important features of striated cardiac muscle is the excitability that turns on the excitation-contraction coupling cycle, resulting in the heart blood pumping function. The function of the heart pump may be impaired by events such as myocardial infarction, the consequence of coronary artery thrombosis due to blood clots or plaques. This results in the death of billions of cardiomyocytes, the formation of scar tissue, and consequently impaired contractility. A whole heart transplant remains the gold standard so far and the current pharmacological approaches tend to stop further myocardium deterioration, but this is not a long-term solution. Electrically conductive, scaffold-based cardiac tissue engineering provides a promising solution to repair the injured myocardium. The non-conductive component of the scaffold provides a biocompatible microenvironment to the cultured cells while the conductive component improves intercellular coupling as well as electrical signal propagation through the scar tissue when implanted at the infarcted site. The in vivo electrical coupling of the cells leads to a better regeneration of the infarcted myocardium, reducing arrhythmias, QRS/QT intervals, and scar size and promoting cardiac cell maturation. This review presents the emerging applications of intrinsically conductive polymers in cardiac tissue engineering to repair post-ischemic myocardial insult.
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Affiliation(s)
- Arsalan Ul Haq
- Dipartimento di Scienze Cliniche e Medicina Traslazionale, Università degli Studi di Roma “Tor Vergata”, Via Montpellier 1, 00133 Rome, Italy;
- CIMER—Centro di Ricerca Interdipartimentale di Medicina Rigenerativa, Università degli Studi di Roma “Tor Vergata”, Via Montpellier 1, 00133 Rome, Italy; (F.D.M.); (P.P.); (R.F.); (L.T.)
| | - Felicia Carotenuto
- Dipartimento di Scienze Cliniche e Medicina Traslazionale, Università degli Studi di Roma “Tor Vergata”, Via Montpellier 1, 00133 Rome, Italy;
- CIMER—Centro di Ricerca Interdipartimentale di Medicina Rigenerativa, Università degli Studi di Roma “Tor Vergata”, Via Montpellier 1, 00133 Rome, Italy; (F.D.M.); (P.P.); (R.F.); (L.T.)
- Department of Fusion and Technologies for Nuclear Safety and Security, Diagnostic and Metrology (FSN-TECFIS-DIM), ENEA, CR Frascati, 00044 Rome, Italy;
| | - Fabio De Matteis
- CIMER—Centro di Ricerca Interdipartimentale di Medicina Rigenerativa, Università degli Studi di Roma “Tor Vergata”, Via Montpellier 1, 00133 Rome, Italy; (F.D.M.); (P.P.); (R.F.); (L.T.)
- Dipartimento di Ingegneria Industriale, Università degli Studi di Roma “Tor Vergata”, Via del Politecnico, 00133 Roma, Italy
| | - Paolo Prosposito
- CIMER—Centro di Ricerca Interdipartimentale di Medicina Rigenerativa, Università degli Studi di Roma “Tor Vergata”, Via Montpellier 1, 00133 Rome, Italy; (F.D.M.); (P.P.); (R.F.); (L.T.)
- Dipartimento di Ingegneria Industriale, Università degli Studi di Roma “Tor Vergata”, Via del Politecnico, 00133 Roma, Italy
| | - Roberto Francini
- CIMER—Centro di Ricerca Interdipartimentale di Medicina Rigenerativa, Università degli Studi di Roma “Tor Vergata”, Via Montpellier 1, 00133 Rome, Italy; (F.D.M.); (P.P.); (R.F.); (L.T.)
- Dipartimento di Ingegneria Industriale, Università degli Studi di Roma “Tor Vergata”, Via del Politecnico, 00133 Roma, Italy
| | - Laura Teodori
- CIMER—Centro di Ricerca Interdipartimentale di Medicina Rigenerativa, Università degli Studi di Roma “Tor Vergata”, Via Montpellier 1, 00133 Rome, Italy; (F.D.M.); (P.P.); (R.F.); (L.T.)
- Department of Fusion and Technologies for Nuclear Safety and Security, Diagnostic and Metrology (FSN-TECFIS-DIM), ENEA, CR Frascati, 00044 Rome, Italy;
| | - Alessandra Pasquo
- Department of Fusion and Technologies for Nuclear Safety and Security, Diagnostic and Metrology (FSN-TECFIS-DIM), ENEA, CR Frascati, 00044 Rome, Italy;
| | - Paolo Di Nardo
- Dipartimento di Scienze Cliniche e Medicina Traslazionale, Università degli Studi di Roma “Tor Vergata”, Via Montpellier 1, 00133 Rome, Italy;
- CIMER—Centro di Ricerca Interdipartimentale di Medicina Rigenerativa, Università degli Studi di Roma “Tor Vergata”, Via Montpellier 1, 00133 Rome, Italy; (F.D.M.); (P.P.); (R.F.); (L.T.)
- L.L. Levshin Institute of Cluster Oncology, I.M. Sechenov First Moscow State Medical University, 119991 Moscow, Russia
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26
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Yao X, Qian Y, Fan C. Electroactive nanomaterials in the peripheral nerve regeneration. J Mater Chem B 2021; 9:6958-6972. [PMID: 34195746 DOI: 10.1039/d1tb00686j] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Severe peripheral nerve injuries are threatening the life quality of human beings. Current clinical treatments contain some limitations and therefore extensive research and efforts are geared towards tissue engineering approaches and development. The biophysical and biochemical characteristics of nanomaterials are highly focused on as critical elements in the design and fabrication of regenerative scaffolds. Recent studies indicate that the electrical properties and nanostructure of biomaterials can significantly affect the progress of nerve repair. More importantly, these studies also demonstrate the fact that electroactive nanomaterials have substantial implications for regulating the viability and fate of primary supporting cells in nerve regeneration. In this review, we summarize the current knowledge of electroconductive and piezoelectric nanomaterials. We exemplify typical cellular responses through cell-material interfaces, and the nanomaterial-induced microenvironment rebalance in terms of several key factors, immune responses, angiogenesis and oxidative stress. This work highlights the mechanism and application of electroactive nanomaterials to the development of regenerative scaffolds for peripheral nerve tissue engineering.
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Affiliation(s)
- Xiangyun Yao
- Department of Orthopedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.
| | - Yun Qian
- Department of Orthopedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.
| | - Cunyi Fan
- Department of Orthopedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.
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27
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Zhang Y, Le Friec A, Chen M. 3D anisotropic conductive fibers electrically stimulated myogenesis. Int J Pharm 2021; 606:120841. [PMID: 34216768 DOI: 10.1016/j.ijpharm.2021.120841] [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: 03/18/2021] [Revised: 06/21/2021] [Accepted: 06/28/2021] [Indexed: 12/17/2022]
Abstract
Recapitulation of in vivo environments that drive muscle cells to organize into a physiologically relevant 3D architecture remains a major challenge for muscle tissue engineering. To recreate electrophysiology of muscle tissues, electroactive biomaterials have been used to stimulate muscle cells with exogenous electrical fields. In particular, the use of electroactive biomaterials with an anisotropic micro-/nanostructure that closely mimic the native skeletal-muscle extracellular matrix (ECM) is desirable for skeletal muscle tissue engineering. Herein, we present a hierarchically organized, anisotropic, and conductive Polycaprolactone/gold (PCL/Au) scaffold for guiding myoblasts alignment and promoting the elongation and maturation of myotubes under electrical stimulation. Culturing with H9c2 myoblasts cells indicated that the nanotopographic cues was crucial for nuclei alignment, while the presence of microscale grooves effectively enhanced both the formation and elongation of myotubes. The anisotropic structure also leads to anisotropic conductivity. Under electrical stimulation, the elongation and maturation of myotubes were significantly enhanced along the anisotropic scaffold. Specifically, compared to the unstimulated group (0 V), the myotube area percentage increased by 1.4, 1.9 and 2.4 times in the 1 V, 2 V, 3 V groups, respectively. In addition, the myotube average length in the 1 V group increased by 1.3 times compared to that of the unstimulated group, and significantly increased by 1.8 and 2.0 times in the 2 V, 3 V groups, respectively. Impressively, the longest myotubes reached more than 4 mm in both 2 V and 3 V groups. Overall, our conductive, anisotropic 3D nano/microfibrous scaffolds with the application of electrical stimulation provides a desirable platform for skeletal muscle tissue engineering.
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Affiliation(s)
- Yanping Zhang
- Interdisciplinary Nanoscience Center, Aarhus University, Aarhus, Denmark
| | - Alice Le Friec
- Department of Biological and Chemical Engineering, Aarhus University, Aarhus, Denmark
| | - Menglin Chen
- Interdisciplinary Nanoscience Center, Aarhus University, Aarhus, Denmark; Department of Biological and Chemical Engineering, Aarhus University, Aarhus, Denmark.
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28
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Muzzio N, Moya S, Romero G. Multifunctional Scaffolds and Synergistic Strategies in Tissue Engineering and Regenerative Medicine. Pharmaceutics 2021; 13:792. [PMID: 34073311 PMCID: PMC8230126 DOI: 10.3390/pharmaceutics13060792] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 05/17/2021] [Accepted: 05/20/2021] [Indexed: 12/20/2022] Open
Abstract
The increasing demand for organ replacements in a growing world with an aging population as well as the loss of tissues and organs due to congenital defects, trauma and diseases has resulted in rapidly evolving new approaches for tissue engineering and regenerative medicine (TERM). The extracellular matrix (ECM) is a crucial component in tissues and organs that surrounds and acts as a physical environment for cells. Thus, ECM has become a model guide for the design and fabrication of scaffolds and biomaterials in TERM. However, the fabrication of a tissue/organ replacement or its regeneration is a very complex process and often requires the combination of several strategies such as the development of scaffolds with multiple functionalities and the simultaneous delivery of growth factors, biochemical signals, cells, genes, immunomodulatory agents, and external stimuli. Although the development of multifunctional scaffolds and biomaterials is one of the most studied approaches for TERM, all these strategies can be combined among them to develop novel synergistic approaches for tissue regeneration. In this review we discuss recent advances in which multifunctional scaffolds alone or combined with other strategies have been employed for TERM purposes.
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Affiliation(s)
- Nicolas Muzzio
- Department of Biomedical Engineering and Chemical Engineering, University of Texas at San Antonio, One UTSA Circle, San Antonio, TX 78249, USA;
| | - Sergio Moya
- Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo Miramon 182 C, 20014 Donostia-San Sebastian, Spain;
- NanoBioMedical Centre, Adam Mickiewicz University, Wszechnicy Piastowskiej 3, 61-614 Poznan, Poland
| | - Gabriela Romero
- Department of Biomedical Engineering and Chemical Engineering, University of Texas at San Antonio, One UTSA Circle, San Antonio, TX 78249, USA;
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29
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3D Printable Electrically Conductive Hydrogel Scaffolds for Biomedical Applications: A Review. Polymers (Basel) 2021; 13:polym13030474. [PMID: 33540900 PMCID: PMC7867335 DOI: 10.3390/polym13030474] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 01/21/2021] [Accepted: 01/26/2021] [Indexed: 02/07/2023] Open
Abstract
Electrically conductive hydrogels (ECHs), an emerging class of biomaterials, have garnered tremendous attention due to their potential for a wide variety of biomedical applications, from tissue-engineered scaffolds to smart bioelectronics. Along with the development of new hydrogel systems, 3D printing of such ECHs is one of the most advanced approaches towards rapid fabrication of future biomedical implants and devices with versatile designs and tuneable functionalities. In this review, an overview of the state-of-the-art 3D printed ECHs comprising conductive polymers (polythiophene, polyaniline and polypyrrole) and/or conductive fillers (graphene, MXenes and liquid metals) is provided, with an insight into mechanisms of electrical conductivity and design considerations for tuneable physiochemical properties and biocompatibility. Recent advances in the formulation of 3D printable bioinks and their practical applications are discussed; current challenges and limitations of 3D printing of ECHs are identified; new 3D printing-based hybrid methods for selective deposition and fabrication of controlled nanostructures are highlighted; and finally, future directions are proposed.
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