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Jiang Z, Chen L, Huang L, Yu S, Lin J, Li M, Gao Y, Yang L. Bioactive Materials That Promote the Homing of Endogenous Mesenchymal Stem Cells to Improve Wound Healing. Int J Nanomedicine 2024; 19:7751-7773. [PMID: 39099796 PMCID: PMC11297574 DOI: 10.2147/ijn.s455469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Accepted: 04/23/2024] [Indexed: 08/06/2024] Open
Abstract
Endogenous stem cell homing refers to the transport of endogenous mesenchymal stem cells (MSCs) to damaged tissue. The paradigm of using well-designed biomaterials to induce resident stem cells to home in to the injured site while coordinating their behavior and function to promote tissue regeneration is known as endogenous regenerative medicine (ERM). ERM is a promising new avenue in regenerative therapy research, and it involves the mobilizing of endogenous stem cells for homing as the principal means through which to achieve it. Comprehending how mesenchymal stem cells home in and grasp the influencing factors of mesenchymal stem cell homing is essential for the understanding and design of tissue engineering. This review summarizes the process of MSC homing, the factors influencing the homing process, analyses endogenous stem cell homing studies of interest in the field of skin tissue repair, explores the integration of endogenous homing promotion strategies with cellular therapies and details tissue engineering strategies that can be used to modulate endogenous homing of stem cells. In addition to providing more systematic theories and ideas for improved materials for endogenous tissue repair, this review provides new perspectives to explore the complex process of tissue remodeling to enhance the rational design of biomaterial scaffolds and guide tissue regeneration strategies.
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Affiliation(s)
- Ziwei Jiang
- Department of Burns, Nanfang Hospital, Southern Medical University, Guangzhou, People’s Republic of China
| | - Lianglong Chen
- Department of Burns, Nanfang Hospital, Southern Medical University, Guangzhou, People’s Republic of China
| | - Lei Huang
- Department of Burns, Nanfang Hospital, Southern Medical University, Guangzhou, People’s Republic of China
| | - Shengxiang Yu
- Department of Burns, Nanfang Hospital, Southern Medical University, Guangzhou, People’s Republic of China
| | - Jiabao Lin
- Department of Burns, Nanfang Hospital, Southern Medical University, Guangzhou, People’s Republic of China
| | - Mengyao Li
- Department of Burns, Nanfang Hospital, Southern Medical University, Guangzhou, People’s Republic of China
| | - Yanbin Gao
- Department of Burns, Nanfang Hospital, Southern Medical University, Guangzhou, People’s Republic of China
| | - Lei Yang
- Department of Burns, Nanfang Hospital, Southern Medical University, Guangzhou, People’s Republic of China
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Nejati S, Mongeau L. In Vitro Investigation of Vocal Fold Cellular Response to Variations in Hydrogel Porosity and Elasticity. ACS Biomater Sci Eng 2024; 10:3909-3922. [PMID: 38783819 DOI: 10.1021/acsbiomaterials.4c00197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
Tissue regeneration is intricately influenced by the dynamic interplay between the physical attributes of tissue engineering scaffolds and the resulting biological responses. A tunable microporous hydrogel system was engineered using gelatin methacryloyl (GelMA) and polyethylene glycol diacrylate (PEGDA), with polyethylene glycol (PEG) serving as a porogen. Through systematic variation of PEGDA molecular weights, hydrogels with varying mechanical and architectural properties were obtained. The objective of the present study was to elucidate the impact of substrate mechanics and architecture on the immunological and reparative activities of vocal fold tissues. Mechanical characterization of the hydrogels was performed using tensile strength measurements and rheometry. Their morphological properties were investigated using scanning electron microscopy (SEM) and confocal microscopy. A series of biological assays were conducted. Cellular morphology, differentiation, and collagen synthesis of human vocal fold fibroblasts (hVFFs) were evaluated using immunostaining. Fibroblast proliferation was studied using the WST-1 assay, and cell migration was investigated via the Boyden chamber assay. Macrophage polarization and secretions were also examined using immunostaining and ELISA. The results revealed that increasing the molecular weight of PEGDA from 700 Da to 10,000 Da resulted in decreased hydrogel stiffness, from 62.6 to 8.8 kPa, and increased pore dimensions from approximately 64.9 to 137.4 μm. Biological evaluations revealed that hydrogels with a higher stiffness promoted fibroblast proliferation and spreading, albeit with an increased propensity for fibrosis, as indicated by a surge in myofibroblast differentiation and collagen synthesis. In contrast, hydrogels with greater molecular weights had a softer matrix with expanded pores, enhancing cellular migration and promoting an M2 macrophage phenotype conducive to tissue healing. The findings show that the hydrogels formulated with a PEGDA molecular weight of 6000 Da are best among the hydrogels considered for vocal fold repair. The microporous hydrogels could be tuned to serve in other tissue engineering applications.
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Affiliation(s)
- Sara Nejati
- Department of Mechanical Engineering, McGill University, Montreal H3A 0C3, Canada
| | - Luc Mongeau
- Department of Mechanical Engineering, McGill University, Montreal H3A 0C3, Canada
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Pathak D, Mazumder A. A critical overview of challenging roles of medicinal plants in improvement of wound healing technology. Daru 2024; 32:379-419. [PMID: 38225520 PMCID: PMC11087437 DOI: 10.1007/s40199-023-00502-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 12/25/2023] [Indexed: 01/17/2024] Open
Abstract
PURPOSE Chronic diseases often hinder the natural healing process, making wound infections a prevalent clinical concern. In severe cases, complications can arise, potentially leading to fatal outcomes. While allopathic treatments offer numerous options for wound repair and management, the enduring popularity of herbal medications may be attributed to their perceived minimal side effects. Hence, this review aims to investigate the potential of herbal remedies in efficiently treating wounds, presenting a promising alternative for consideration. METHODS A literature search was done including research, reviews, systematic literature review, meta-analysis, and clinical trials considered. Search engines such as Pubmed, Google Scholar, and Scopus were used while retrieving data. Keywords like Wound healing 'Wound healing and herbal combinations', 'Herbal wound dressing', Nanotechnology and Wound dressing were used. RESULT This review provides valuable insights into the role of natural products and technology-based formulations in the treatment of wound infections. It evaluates the use of herbal remedies as an effective approach. Various active principles from herbs, categorized as flavonoids, glycosides, saponins, and phenolic compounds, have shown effectiveness in promoting wound closure. A multitude of herbal remedies have demonstrated significant efficacy in wound management, offering an additional avenue for care. The review encompasses a total of 72 studies, involving 127 distinct herbs (excluding any common herbs shared between studies), primarily belonging to the families Asteraceae, Fabaceae, and Apiaceae. In research, rat models were predominantly utilized to assess wound healing activities. Furthermore, advancements in herbal-based formulations using nanotechnology-based wound dressing materials, such as nanofibers, nanoemulsions, nanofiber mats, polymeric fibers, and hydrogel-based microneedles, are underway. These innovations aim to enhance targeted drug delivery and expedite recovery. Several clinical-based experimental studies have already been documented, evaluating the efficacy of various natural products for wound care and management. This signifies a promising direction in the field of wound treatment. CONCLUSION In recent years, scientists have increasingly utilized evidence-based medicine and advanced scientific techniques to validate the efficacy of herbal medicines and delve into the underlying mechanisms of their actions. However, there remains a critical need for further research to thoroughly understand how isolated chemicals extracted from herbs contribute to the healing process of intricate wounds, which may have life-threatening consequences. This ongoing research endeavor holds great promise in not only advancing our understanding but also in the development of innovative formulations that expedite the recovery process.
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Affiliation(s)
- Deepika Pathak
- Noida Institute of Engineering and Technology (Pharmacy Institute), 19 Knowledge Park-II, Institutional Area, Greater Noida, UP, 201306, India.
| | - Avijit Mazumder
- Noida Institute of Engineering and Technology (Pharmacy Institute), 19 Knowledge Park-II, Institutional Area, Greater Noida, UP, 201306, India
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Daou B, Silvestri A, Lasa H, Mancino D, Prato M, Alegret N. Organic Functional Group on Carbon Nanotube Modulates the Maturation of SH-SY5Y Neuronal Models. Macromol Biosci 2023; 23:e2300173. [PMID: 37392465 DOI: 10.1002/mabi.202300173] [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: 04/21/2023] [Revised: 06/29/2023] [Accepted: 06/29/2023] [Indexed: 07/03/2023]
Abstract
Carbon nanotubes (CNT) have proven to be excellent substrates for neuronal cultures, showing high affinity and greatly boosting their synaptic functionality. Therefore, growing cells on CNT offers an opportunity to perform a large variety of neuropathology studies in vitro. To date, the interactions between neurons and chemical functional groups have not been studied extensively. To this end, multiwalled CNT (f-CNT) is functionalized with various functional groups, including sulfonic (-SO3 H), nitro (-NO2 ), amino (-NH2 ), and oxidized moieties. f-CNTs are spray-coated onto untreated glass substrates and are used as substrates for the incubation of neuroblastoma cells (SH-SY5Y). After 7 d, its effect is evaluated in terms of cell attachment, survival, growth, and spontaneous differentiation. Cell viability assays show quite increased proliferation on various f-CNT substrates (CNTs-NO2 > ox-CNTs ≈ CNTs-SO3 H > CNTs ≈ CNTs-NH2 ). Additionally, SH-SY5Y cells show selectively better differentiation and maturation with -SO3 H substrates, where an increased expression of β-III tubulin is seen. In all cases, intricate cell-CNT networks are observed and the morphology of the cells adopts longer and thinner cellular processes, suggesting that the type of functionalization may have an effect of the length and thickness. Finally, a possible correlation is determined between conductivity of f-CNTs and cell-processes lengths.
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Affiliation(s)
- Bahaa Daou
- Center for Cooperative Research in Biomaterials (CIC BiomaGUNE), Basque Research and Technology Alliance (BRTA), Donostia-San Sebastián, 20014, Spain
- Neuromuscular Diseases Group, Neurosciences Area, Biodonostia Health Research Institute, Donostia/San Sebastián, 20014, Spain
| | - Alessandro Silvestri
- Center for Cooperative Research in Biomaterials (CIC BiomaGUNE), Basque Research and Technology Alliance (BRTA), Donostia-San Sebastián, 20014, Spain
| | - Haizpea Lasa
- Center for Cooperative Research in Biomaterials (CIC BiomaGUNE), Basque Research and Technology Alliance (BRTA), Donostia-San Sebastián, 20014, Spain
- Neuromuscular Diseases Group, Neurosciences Area, Biodonostia Health Research Institute, Donostia/San Sebastián, 20014, Spain
| | - Donato Mancino
- Center for Cooperative Research in Biomaterials (CIC BiomaGUNE), Basque Research and Technology Alliance (BRTA), Donostia-San Sebastián, 20014, Spain
| | - Maurizio Prato
- Center for Cooperative Research in Biomaterials (CIC BiomaGUNE), Basque Research and Technology Alliance (BRTA), Donostia-San Sebastián, 20014, Spain
- Ikerbasque, Basque Foundation for Science, Bilbao, 48013, Spain
- Department of Chemical and Pharmaceutical Sciences, Universitá Degli Studi di Trieste, Trieste, 34127, Italy
| | - Nuria Alegret
- Center for Cooperative Research in Biomaterials (CIC BiomaGUNE), Basque Research and Technology Alliance (BRTA), Donostia-San Sebastián, 20014, Spain
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Wei X, Wang L, Duan C, Chen K, Li X, Guo X, Chen P, Liu H, Fan Y. Cardiac patches made of brown adipose-derived stem cell sheets and conductive electrospun nanofibers restore infarcted heart for ischemic myocardial infarction. Bioact Mater 2023; 27:271-287. [PMID: 37122901 PMCID: PMC10130885 DOI: 10.1016/j.bioactmat.2023.03.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 03/26/2023] [Accepted: 03/30/2023] [Indexed: 05/02/2023] Open
Abstract
Cell sheet engineering has been proven to be a promising strategy for cardiac remodeling post-myocardial infarction. However, insufficient mechanical strength and low cell retention lead to limited therapeutic efficiency. The thickness and area of artificial cardiac patches also affect their therapeutic efficiency. Cardiac patches prepared by combining cell sheets with electrospun nanofibers, which can be transplanted and sutured to the surface of the infarcted heart, promise to solve this problem. Here, we fabricated a novel cardiac patch by stacking brown adipose-derived stem cells (BADSCs) sheet layer by layer, and then they were combined with multi-walled carbon nanotubes (CNTs)-containing electrospun polycaprolactone/silk fibroin nanofibers (CPSN). The results demonstrated that BADSCs tended to generate myocardium-like structures seeded on CPSN. Compared with BADSCs suspension-containing electrospun nanofibers, the transplantation of the CPSN-BADSCs sheets (CNBS) cardiac patches exhibited accelerated angiogenesis and decreased inflammation in a rat myocardial infarction model. In addition, the CNBS cardiac patches could regulate macrophage polarization and promote gap junction remodeling, thus restoring cardiac functions. Overall, the hybrid cardiac patches made of electrospun nanofibers and cell sheets provide a novel solution to cardiac remodeling after ischemic myocardial infarction.
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Affiliation(s)
- Xinbo Wei
- Key Laboratory for Biomechanics and Mechanobiology (Beihang University) of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, PR China
| | - Li Wang
- Key Laboratory for Biomechanics and Mechanobiology (Beihang University) of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, PR China
| | - Cuimi Duan
- Department of Advanced Interdisciplinary Studies, Institute of Basic Medical Sciences, Beijing, 100850, PR China
| | - Kai Chen
- Key Laboratory for Biomechanics and Mechanobiology (Beihang University) of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, PR China
| | - Xia Li
- Beijing Citident Stomatology Hospital, Beijing, 100032, PR China
| | - Ximin Guo
- Department of Advanced Interdisciplinary Studies, Institute of Basic Medical Sciences, Beijing, 100850, PR China
- Corresponding author.
| | - Peng Chen
- Department of Ultrasound, The Third Medical Center, Chinese PLA General Hospital, Beijing, PR China
- Corresponding author.
| | - Haifeng Liu
- Key Laboratory for Biomechanics and Mechanobiology (Beihang University) of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, PR China
- Corresponding author.
| | - Yubo Fan
- Key Laboratory for Biomechanics and Mechanobiology (Beihang University) of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, PR China
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6
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Nejati S, Mongeau L. Injectable, pore-forming, self-healing, and adhesive hyaluronan hydrogels for soft tissue engineering applications. Sci Rep 2023; 13:14303. [PMID: 37652951 PMCID: PMC10471737 DOI: 10.1038/s41598-023-41468-9] [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: 04/21/2023] [Accepted: 08/27/2023] [Indexed: 09/02/2023] Open
Abstract
Most existing injectable hydrogels are non-porous, thereby lacking a microporous structure to promote cell ingrowth. Also, most hydrogels do not effectively adhere to the host tissue. The present study describes an injectable double network hydrogel formed by combining two hyaluronic acid (HA) derivatives, namely dopamine grafted HA (DAHA) and methacrylated HA (HAMA). These constituents instantly form a physically crosslinked network through Fe3+-dopamine coordination, and confer fast gelation, pore formation, and self-healing properties to the hydrogel. Photocroslinked upon UV exposure, HAMA forms a chemically crosslinked network, thereby improving mechanical and degradation properties. The adhesive properties of this hydrogel are attributed to the presence of dopamine groups, inspired by mussel creatures. Proper modification of HA chains was confirmed by NMR spectroscopy. The physical, mechanical, rheological, and biological properties of the new hydrogels were quantified in wet laboratory conditions. The results revealed that the DAHA/HAMA hydrogel rapidly forms a self-healing microporous adhesive scaffold with a 26.9 µm pore size, 29.4 kPa compressive modulus, and 12.8 kPa adhesion strength in under 6 s. These findings suggest that the new hydrogel is a promising candidate for in situ repair of soft tissues, particularly mechanically dynamic ones such as the vocal folds, cartilage, and dermis.
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Affiliation(s)
- Sara Nejati
- Department of Mechanical Engineering, McGill University, Montreal, Canada
| | - Luc Mongeau
- Department of Mechanical Engineering, McGill University, Montreal, Canada.
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7
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Nie L, Wei Q, Li J, Deng Y, He X, Gao X, Ma X, Liu S, Sun Y, Jiang G, Okoro OV, Shavandi A, Jing S. Fabrication and desired properties of conductive hydrogel dressings for wound healing. RSC Adv 2023; 13:8502-8522. [PMID: 36926300 PMCID: PMC10012873 DOI: 10.1039/d2ra07195a] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Accepted: 02/28/2023] [Indexed: 03/16/2023] Open
Abstract
Conductive hydrogels are platforms recognized as constituting promising materials for tissue engineering applications. This is because such conductive hydrogels are characterized by the inherent conductivity properties while retaining favorable biocompatibility and mechanical properties. These conductive hydrogels can be particularly useful in enhancing wound healing since their favorable conductivity can promote the transport of essential ions for wound healing via the imposition of a so-called transepithelial potential. Other valuable properties of these conductive hydrogels, such as wound monitoring, stimuli-response etc., are also discussed in this study. Crucially, the properties of conductive hydrogels, such as 3D printability and monitoring properties, suggest the possibility of its use as an alternative wound dressing to traditional dressings such as bandages. This review, therefore, seeks to comprehensively explore the functionality of conductive hydrogels in wound healing, types of conductive hydrogels and their preparation strategies and crucial properties of hydrogels. This review will also assess the limitations of conductive hydrogels and future perspectives, with an emphasis on the development trend for conductive hydrogel uses in wound dressing fabrication for subsequent clinical applications.
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Affiliation(s)
- Lei Nie
- College of Life Sciences, Xinyang Normal University Xinyang 464000 China +86-13600621068.,Université libre de Bruxelles (ULB), École polytechnique de Bruxelles, 3BIO-BioMatter, Avenue F.D. Roosevelt 50 - CP 165/61 1050 Brussels Belgium
| | - Qianqian Wei
- College of Life Sciences, Xinyang Normal University Xinyang 464000 China +86-13600621068
| | - Jingyu Li
- College of Life Sciences, Xinyang Normal University Xinyang 464000 China +86-13600621068
| | - Yaling Deng
- College of Intelligent Science and Control Engineering, Jinling Institute of Technology Nanjing 211169 P.R. China
| | - Xiaorui He
- College of Life Sciences, Xinyang Normal University Xinyang 464000 China +86-13600621068
| | - Xinyue Gao
- College of Life Sciences, Xinyang Normal University Xinyang 464000 China +86-13600621068
| | - Xiao Ma
- College of Life Sciences, Xinyang Normal University Xinyang 464000 China +86-13600621068
| | - Shuang Liu
- School of Resources and Environmental Engineering, Wuhan University of Technology Wuhan 430070 P. R. China
| | - Yanfang Sun
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University Hangzhou 310018 China
| | - Guohua Jiang
- School of Materials Science and Engineering, Zhejiang Sci-Tech University Hangzhou 310018 China.,International Scientific and Technological Cooperation Base of Intelligent Biomaterials and Functional Fibers, Zhejiang Sci-Tech University Hangzhou 310018 China
| | - Oseweuba Valentine Okoro
- Université libre de Bruxelles (ULB), École polytechnique de Bruxelles, 3BIO-BioMatter, Avenue F.D. Roosevelt 50 - CP 165/61 1050 Brussels Belgium
| | - Amin Shavandi
- Université libre de Bruxelles (ULB), École polytechnique de Bruxelles, 3BIO-BioMatter, Avenue F.D. Roosevelt 50 - CP 165/61 1050 Brussels Belgium
| | - Shengli Jing
- College of Life Sciences, Xinyang Normal University Xinyang 464000 China +86-13600621068
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Simpson C, Cavanagh BL, Kelly HM, Murphy CM. Simple Technique for Microscopic Evaluation of Active Cellular Invasion into 3D Hydrogel Constructs. ACS Biomater Sci Eng 2023; 9:1243-1250. [PMID: 36749897 PMCID: PMC10015425 DOI: 10.1021/acsbiomaterials.2c01015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
Materials that are evaluated for bioengineering purposes are carefully tested to evaluate cellular interactions with respect to biocompatibility and in some cases cell differentiation. A key perspective that is often considered is the ability for decellularized synthetic or natural based matrices to facilitate cell migration or tissue ingrowth. Current methods of measuring cell migration range from simple scratch assays to Boyden chamber inserts and fluorescent imaging of seeded spheroids. Many of these methods require tissue processing for histological analysis and fixing and staining for imaging, which can be difficult and dependent on the stability of the hydrogel subject. Herein we present a simple platform that can be manufactured using 3D printing and easily applied to in vitro cell culture, allowing the researcher to image live cellular migration into a cellular materials. We found this to be an adaptable, cheap, and replicable technique to evaluate cellular interaction that has applications in the research and development of hydrogels for tissue engineering purposes.
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Affiliation(s)
- Christopher
R. Simpson
- Tissue
Engineering Research Group, Department of Anatomy & Regenerative
Medicine, Royal College of Surgeons in Ireland
(RCSI), 123 St. Stephen’s Green, Dublin D02 YN77, Ireland
| | - Brenton L. Cavanagh
- Cellular
and Molecular Imaging Core, Royal College
of Surgeons in Ireland (RCSI), 123 St. Stephen’s Green, Dublin D02 YN77, Ireland
| | - Helena M. Kelly
- Tissue
Engineering Research Group, Department of Anatomy & Regenerative
Medicine, Royal College of Surgeons in Ireland
(RCSI), 123 St. Stephen’s Green, Dublin D02 YN77, Ireland
- School
of Pharmacy and Biomolecular Sciences, RCSI, Ardilaun House, 111 St Stephen’s Green, Dublin D02 VN51, Ireland
| | - Ciara M. Murphy
- Tissue
Engineering Research Group, Department of Anatomy & Regenerative
Medicine, Royal College of Surgeons in Ireland
(RCSI), 123 St. Stephen’s Green, Dublin D02 YN77, Ireland
- Advanced
Materials and Bioengineering Research (AMBER) Centre, Naughton Institute, Trinity College Dublin (TCD), Dublin D02 PN40, Ireland
- Trinity
Centre for Biomedical Engineering, Trinity
College Dublin, 152-160
Pearse Street, Dublin D02
R590, Ireland
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Wang J, Fu S, Li H, Wu Y. A CS-based composite scaffold with excellent photothermal effect and its application in full-thickness skin wound healing. Regen Biomater 2023; 10:rbad028. [PMID: 37091498 PMCID: PMC10118997 DOI: 10.1093/rb/rbad028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/29/2023] [Accepted: 02/19/2023] [Indexed: 04/25/2023] Open
Abstract
The development of natural polymer-based scaffolds with excellent biocompatibility, antibacterial activity, and blood compatibility, able to facilitate full-thickness skin wound healing, remains challenging. In this study, we have developed three chitosan (CS)-based porous scaffolds, including CS, CS/CNT (carbon nanotubes) and CS/CNT/HA (nano-hydroxyapatite, n-HA) using a freeze-drying method. All three scaffolds have a high swelling ratio, excellent antibacterial activity, outstanding cytocompatibility and blood compatibility in vitro. The introduction of CNTs exhibited an obvious increase in mechanical properties and exerts excellent photothermal response, which displays excellent healing performance as a wound dressing in mouse full-thickness skin wound model when compared to CS scaffolds. CS/CNT/HA composite scaffolds present the strongest ability to promote full-thickness cutaneous wound closure and skin regeneration, which might be ascribed to the synergistic effect of photothermal response from CNT and excellent bioactivity from n-HA. Overall, the present study indicated that CNT and n-HA can be engineered as effective constituents in wound dressings to facilitate full-thickness skin regeneration.
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Affiliation(s)
| | - Shijia Fu
- School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
| | - Huishan Li
- School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
| | - Yue Wu
- School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
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10
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Wang Q, Luo Z, Wu YL, Li Z. Recent Advances in Enzyme‐Based Biomaterials Toward Diabetic Wound Healing. ADVANCED NANOBIOMED RESEARCH 2022. [DOI: 10.1002/anbr.202200110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Affiliation(s)
- Qi Wang
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology School of Pharmaceutical Sciences Xiamen University Xiamen 361102 China
| | - Zheng Luo
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology School of Pharmaceutical Sciences Xiamen University Xiamen 361102 China
- Institute of Materials Research and Engineering A*STAR (Agency for Science, Technology and Research) 2 Fusionopolis Way Innovis, #08-03 Singapore 138634 Singapore
| | - Yun-Long Wu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology School of Pharmaceutical Sciences Xiamen University Xiamen 361102 China
| | - Zibiao Li
- Institute of Materials Research and Engineering A*STAR (Agency for Science, Technology and Research) 2 Fusionopolis Way Innovis, #08-03 Singapore 138634 Singapore
- Institute of Sustainability for Chemicals, Energy and Environment (ISCE2) Agency for Science, Technology and Research (A*STAR) 2 Fusionopolis Way Singapore 138634 Singapore
- Department of Materials Science and Engineering National University of Singapore 9 Engineering Drive 1 Singapore 117576 Singapore
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Kim J, Jang J. 3D printable conductive composite inks for the fabrication of biocompatible electrodes in tissue engineering application. Int J Bioprint 2022; 9:643. [PMID: 36636129 PMCID: PMC9831065 DOI: 10.18063/ijb.v9i1.643] [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: 05/31/2022] [Accepted: 07/10/2022] [Indexed: 11/18/2022] Open
Abstract
Native tissues are affected by the microenvironment surrounding the tissue, including electrical activities. External electrical stimulation, which is used in replicating electrical activities and regulating cell behavior, is mainly applied in neural and cardiac tissues due to their electrophysiological properties. The in vitro cell culture platform with electrodes provides precise control of the stimulation property and eases the observation of the effects on the cells. The frequently used electrodes are metal or carbon rods, but their risk of damaging tissue and their mechanical properties that are largely different from those of native tissues hinder further applications. Biocompatible polymer reinforced with conductive fillers emerges as a potential solution to fabricate the complex structure of the platform and electrode. Conductive polymer can be used as an ink in the extrusion-based printing method, thus enabling the fabrication of volumetric structures. The filler simultaneously alters the electrical and rheological properties of the ink; therefore, the amount of additional compound should be precisely determined regarding printability and conductivity. This review provides an overview on the rheology and conductivity change relative to the concentration of conductive fillers and the applications of printed electrodes. Next, we discuss the future potential use of a cell culture platform with electrodes from in vitro and in vivo perspectives.
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Affiliation(s)
- Jihwan Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, South Korea
| | - Jinah Jang
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, South Korea,Department of Convergence IT Engineering, Pohang University of Science and Technology (POSTECH), Pohang, South Korea,School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology (POSTECH), Pohang, South Korea,Institute for Convergence Research and Education in Advanced Technology, Yonsei University, Seoul, South Korea,Corresponding author: Jinah Jang ()
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12
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Raja IS, Kang MS, Hong SW, Bae H, Kim B, Hwang YS, Cha JM, Han DW. State-of-the-art techniques for promoting tissue regeneration: Combination of three-dimensional bioprinting and carbon nanomaterials. Int J Bioprint 2022; 9:635. [PMID: 36844243 PMCID: PMC9947385 DOI: 10.18063/ijb.v9i1.635] [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: 07/04/2022] [Accepted: 08/23/2022] [Indexed: 11/06/2022] Open
Abstract
181Biofabrication approaches, such as three-dimensional (3D) bioprinting of hydrogels, have recently garnered increasing attention, especially in the construction of 3D structures that mimic the complexity of tissues and organs with the capacity for cytocompatibility and post-printing cellular development. However, some printed gels show poor stability and maintain less shape fidelity if parameters such as polymer nature, viscosity, shear-thinning behavior, and crosslinking are affected. Therefore, researchers have incorporated various nanomaterials as bioactive fillers into polymeric hydrogels to address these limitations. Carbon-family nanomaterials (CFNs), hydroxyapatites, nanosilicates, and strontium carbonates have been incorporated into printed gels for application in various biomedical fields. In this review, following the compilation of research publications on CFNs-containing printable gels in various tissue engineering applications, we discuss the types of bioprinters, the prerequisites of bioink and biomaterial ink, as well as the progress and challenges of CFNs-containing printable gels in this field.
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Affiliation(s)
| | - Moon Sung Kang
- Department of Cogno-Mechatronics Engineering, College of Nanoscience & Nanotechnology, Pusan National University, Busan 46241, South Korea
| | - Suck Won Hong
- Department of Cogno-Mechatronics Engineering, College of Nanoscience & Nanotechnology, Pusan National University, Busan 46241, South Korea
| | - Hojae Bae
- Department of Stem Cell and Regenerative Biotechnology, KU Convergence Science and Technology Institute, Konkuk University, Seoul, 05029, Republic of Korea
| | - Bongju Kim
- Dental Life Science Research Institute/Innovation Research & Support Center for Dental Science, Seoul National University Dental Hospital, Seoul 03080, South Korea
| | - Yu-Shik Hwang
- Department of Maxillofacial Biomedical Engineering and Institute of Oral Biology, School of Dentistry, Kyung Hee University, Seoul 02447, South Korea
| | - Jae Min Cha
- Department of Mechatronics Engineering, College of Engineering, Incheon National University, Incheon 22012, South Korea,Corresponding authors: Jae Min Cha () Dong-Wook Han ()
| | - Dong-Wook Han
- BIO-IT Fusion Technology Research Institute, Pusan National University, Busan 46241, South Korea,Department of Cogno-Mechatronics Engineering, College of Nanoscience & Nanotechnology, Pusan National University, Busan 46241, South Korea,Corresponding authors: Jae Min Cha () Dong-Wook Han ()
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13
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Evaluation of the osteoinductive potential of HDPSCs cultured on β-glycerol phosphate functionalized MWCNTs/PCL membranes for bone regeneration. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-021-03721-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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14
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Tortorici M, Brauer E, Thiele M, Duda GN, Petersen A. Characterizing cell recruitment into isotropic and anisotropic biomaterials by quantification of spatial density gradients in vitro. Front Bioeng Biotechnol 2022; 10:939713. [PMID: 35992332 PMCID: PMC9389461 DOI: 10.3389/fbioe.2022.939713] [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: 05/09/2022] [Accepted: 07/04/2022] [Indexed: 11/13/2022] Open
Abstract
The success of cell-free in situ tissue engineering approaches depends on an appropriate recruitment of autologous cells from neighboring tissues. This identifies cellular migration as a critical parameter for the pre-clinical characterization of biomaterials. Here, we present a new method to quantify both the extent and the spatial anisotropy of cell migration in vitro. For this purpose, a cell spheroid is used as a cell source to provide a high number of cells for cellular invasion and, at the same time, to guarantee a controlled and spatially localized contact to the material. Therefore, current limitations of assays based on 2D cell sources can be overcome. We tested the method on three biomaterials that are in clinical use for soft tissue augmentation in maxilla-facial surgery and a substrate used for 3D in vitro cell culture. The selected biomaterials were all collagen-derived, but differed in their internal architecture. The analysis of cellular isodensity profiles within the biomaterials allowed the identification of the extent and the preferential directions of migration, as well as their relation to the biomaterials and their specific pore morphologies. The higher cell density within the biomaterials resulting from the here-introduced cell spheroid assay compared to established 2D cell layer assays suggests a better representation of the in vivo situation. Consequently, the presented method is proposed to advance the pre-clinical evaluation of cell recruitment into biomaterials, possibly leading to an improved prediction of the regeneration outcome.
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Affiliation(s)
- Martina Tortorici
- Julius Wolff Institute, Berlin Institute of Health at Charité—Universitätsmedizin Berlin, Berlin, Germany
- Berlin-Brandenburg School for Regenerative Therapies, Charité—Universitätsmedizin Berlin, Berlin, Germany
| | - Erik Brauer
- Julius Wolff Institute, Berlin Institute of Health at Charité—Universitätsmedizin Berlin, Berlin, Germany
- Berlin-Brandenburg School for Regenerative Therapies, Charité—Universitätsmedizin Berlin, Berlin, Germany
- BIH Center for Regenerative Therapies, Berlin Institute of Health at Charité—Universitätsmedizin Berlin, Berlin, Germany
| | - Mario Thiele
- Julius Wolff Institute, Berlin Institute of Health at Charité—Universitätsmedizin Berlin, Berlin, Germany
| | - Georg N. Duda
- Julius Wolff Institute, Berlin Institute of Health at Charité—Universitätsmedizin Berlin, Berlin, Germany
- Berlin-Brandenburg School for Regenerative Therapies, Charité—Universitätsmedizin Berlin, Berlin, Germany
- BIH Center for Regenerative Therapies, Berlin Institute of Health at Charité—Universitätsmedizin Berlin, Berlin, Germany
| | - Ansgar Petersen
- Julius Wolff Institute, Berlin Institute of Health at Charité—Universitätsmedizin Berlin, Berlin, Germany
- Berlin-Brandenburg School for Regenerative Therapies, Charité—Universitätsmedizin Berlin, Berlin, Germany
- BIH Center for Regenerative Therapies, Berlin Institute of Health at Charité—Universitätsmedizin Berlin, Berlin, Germany
- *Correspondence: Ansgar Petersen,
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15
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Mascarenhas-Melo F, Gonçalves MBS, Peixoto D, Pawar KD, Bell V, Chavda VP, Zafar H, Raza F, Paiva-Santos AC, Paiva-Santos AC. Application of nanotechnology in management and treatment of diabetic wounds. J Drug Target 2022; 30:1034-1054. [PMID: 35735061 DOI: 10.1080/1061186x.2022.2092624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Diabetic wounds are one of the most common health problems worldwide, enhancing the demand for new management strategies. Nanotechnology, as a developing subject in diabetic wound healing, is proving to be a promising and effective tool in treatment and care. It is, therefore, necessary to ascertain the available and distinct nanosystems and evaluate their performance when topically applied to the injury site, especially in diabetic wound healing. Several active ingredients, including bioactive ingredients, growth factors, mesenchymal stem cells, nucleic acids, and drugs, benefit from improved properties when loaded into nanosystems. Given the risk of problems associated with systemic administration, the topical application should be considered, provided stability and efficacy are assured. After nanoencapsulation, active ingredients-loaded nanosystems have been showing remarkable features of biocompatibility, healing process hastening, angiogenesis, and extracellular matrix compounds synthesis stimulation, contributing to a decrease in wound inflammation. Despite limitations, nanotechnology has attracted widespread attention in the scientific community and seems to be a valuable technological ally in the treatment and dressing of diabetic wounds. The use of nanotechnology in topical applications enables efficient delivery of the active ingredients to the specific skin site, increasing their bioavailability, stability, and half-life time, without compromising their safety.
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Affiliation(s)
- Filipa Mascarenhas-Melo
- Drug Development and Technology Laboratory, Faculty of Pharmacy of the University of Coimbra, University of Coimbra, Coimbra, Portugal.,REQUIMTE/LAQV, Group of Pharmaceutical Technology, Faculty of Pharmacy of the University of Coimbra, University of Coimbra, Coimbra, Portugal
| | - Maria Beatriz S Gonçalves
- Drug Development and Technology Laboratory, Faculty of Pharmacy of the University of Coimbra, University of Coimbra, Coimbra, Portugal
| | - Diana Peixoto
- Drug Development and Technology Laboratory, Faculty of Pharmacy of the University of Coimbra, University of Coimbra, Coimbra, Portugal
| | - Kiran D Pawar
- School of Nanoscience and Biotechnology, Shivaji University, Vidyanagar, Kolhapur, Maharashtra, India
| | - Victoria Bell
- Laboratory of Social Pharmacy and Public Health, Faculty of Pharmacy of the University of Coimbra, University of Coimbra, Coimbra, Portugal
| | - Vivek P Chavda
- Department of Pharmaceutics and Pharmaceutical Technology, L M College of Pharmacy, Ahmedabad, Gujarat, India
| | - Hajra Zafar
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai, China
| | - Faisal Raza
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai, China
| | - Ana Cláudia Paiva-Santos
- Drug Development and Technology Laboratory, Faculty of Pharmacy of the University of Coimbra, University of Coimbra, Coimbra, Portugal.,REQUIMTE/LAQV, Group of Pharmaceutical Technology, Faculty of Pharmacy of the University of Coimbra, University of Coimbra, Coimbra, Portugal
| | - Ana Cláudia Paiva-Santos
- Drug Development and Technology Laboratory, Faculty of Pharmacy of the University of Coimbra, University of Coimbra, Coimbra, Portugal.,REQUIMTE/LAQV, Group of Pharmaceutical Technology, Faculty of Pharmacy of the University of Coimbra, University of Coimbra, Coimbra, Portugal
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16
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Mohammadi S, Ravanbakhsh H, Taheri S, Bao G, Mongeau L. Immunomodulatory Microgels Support Proregenerative Macrophage Activation and Attenuate Fibroblast Collagen Synthesis. Adv Healthc Mater 2022; 11:e2102366. [PMID: 35122412 DOI: 10.1002/adhm.202102366] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 01/28/2022] [Indexed: 11/05/2022]
Abstract
Scars composed of fibrous connective tissues are natural consequences of injury upon incisional wound healing in soft tissues. Hydrogels that feature a sustained presentation of immunomodulatory cytokines are known to modulate wound healing. However, existing immunomodulatory hydrogels lack interconnected micropores to promote cell ingrowth. Other limitations include invasive delivery procedures and harsh synthesis conditions that are incompatible with drug molecules. Here, hybrid nanocomposite microgels containing interleukin-10 (IL-10) are reported to modulate tissue macrophage phenotype during wound healing. The intercalation of laponite nanoparticles in the polymer network yields microgels with tissue-mimetic elasticity (Young's modulus in the range of 2-6 kPa) and allows the sustained release of IL-10 to promote the differentiation of macrophages toward proregenerative phenotypes. The porous interstitial spaces between microgels promote fibroblast proliferation and fast trafficking (an average speed of ≈14.4 µm h-1 ). The incorporation of hyaluronic acid further enhances macrophage infiltration. The coculture of macrophages and fibroblasts treated with transforming growth factor-beta 1 resulted in a twofold reduction in collagen-I production for microgels releasing IL-10 compared to the IL-10 free group. The new microgels show potential toward regenerative healing by harnessing the antifibrotic behavior of host macrophages.
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Affiliation(s)
- Sepideh Mohammadi
- Department of Mechanical Engineering McGill University Montreal QC H3A 0C3 Canada
| | - Hossein Ravanbakhsh
- Department of Mechanical Engineering McGill University Montreal QC H3A 0C3 Canada
| | - Sareh Taheri
- Department of Mechanical Engineering McGill University Montreal QC H3A 0C3 Canada
| | - Guangyu Bao
- Department of Mechanical Engineering McGill University Montreal QC H3A 0C3 Canada
| | - Luc Mongeau
- Department of Mechanical Engineering McGill University Montreal QC H3A 0C3 Canada
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17
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NVCL-Based Hydrogels and Composites for Biomedical Applications: Progress in the Last Ten Years. Int J Mol Sci 2022; 23:ijms23094722. [PMID: 35563114 PMCID: PMC9103572 DOI: 10.3390/ijms23094722] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 04/22/2022] [Accepted: 04/22/2022] [Indexed: 12/20/2022] Open
Abstract
Hydrogels consist of three-dimensionally crosslinked polymeric chains, are hydrophilic, have the ability to absorb other molecules in their structure and are relatively easy to obtain. However, in order to improve some of their properties, usually mechanical, or to provide them with some physical, chemical or biological characteristics, hydrogels have been synthesized combined with other synthetic or natural polymers, filled with inorganic nanoparticles, metals, and even polymeric nanoparticles, giving rise to composite hydrogels. In general, different types of hydrogels have been synthesized; however, in this review, we refer to those obtained from the thermosensitive polymer poly(N-vinylcaprolactam) (PNVCL) and we focus on the definition, properties, synthesis techniques, nanomaterials used as fillers in composites and mainly applications of PNVCL-based hydrogels in the biomedical area. This type of material has great potential in biomedical applications such as drug delivery systems, tissue engineering, as antimicrobials and in diagnostic and bioimaging.
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18
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Yin XH, Xu YM, Lau ATY. Nanoparticles: Excellent Materials Yet Dangerous When They Become Airborne. TOXICS 2022; 10:50. [PMID: 35202237 PMCID: PMC8874650 DOI: 10.3390/toxics10020050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 01/05/2022] [Accepted: 01/07/2022] [Indexed: 02/05/2023]
Abstract
Since the rise and rapid development of nanoscale science and technology in the late 1980s, nanomaterials have been widely used in many areas including medicine, electronic products, crafts, textiles, and cosmetics, which have provided a lot of convenience to people's life. However, while nanomaterials have been fully utilized, their negative effects, also known as nano pollution, have become increasingly apparent. The adverse effects of nanomaterials on the environment and organisms are mainly based on the unique size and physicochemical properties of nanoparticles (NPs). NPs, as the basic unit of nanomaterials, generally refer to the ultrafine particles whose spatial scale are defined in the range of 1-100 nm. In this review, we mainly introduce the basic status of the types and applications of NPs, airborne NP pollution, and the relationship between airborne NP pollution and human diseases. There are many sources of airborne NP pollutants, including engineered nanoparticles (ENPs) and non-engineered nanoparticles (NENPs). The NENPs can be further divided into those generated from natural activities and those produced by human activities. A growing number of studies have found that exposure to airborne NP pollutants can cause a variety of illnesses, such as respiratory diseases, cardiovascular diseases, and neurological disorders. To deal with the ever increasing numbers and types of NPs being unleashed to the air, we believe that extensive research is needed to provide a comprehensive understanding of NP pollution hazards and their impact mechanisms. Only in this way can we find the best solution and truly protect the safety and quality of life of human beings.
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Affiliation(s)
- Xiao-Hui Yin
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou 515041, China
| | - Yan-Ming Xu
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou 515041, China
| | - Andy T. Y. Lau
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou 515041, China
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19
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David ME, Ion RM, Grigorescu RM, Iancu L, Holban AM, Iordache F, Nicoara AI, Alexandrescu E, Somoghi R, Teodorescu S, Gheboianu AI. Biocompatible and Antimicrobial Cellulose Acetate-Collagen Films Containing MWCNTs Decorated with TiO 2 Nanoparticles for Potential Biomedical Applications. NANOMATERIALS 2022; 12:nano12020239. [PMID: 35055256 PMCID: PMC8781191 DOI: 10.3390/nano12020239] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 12/27/2021] [Accepted: 01/10/2022] [Indexed: 12/29/2022]
Abstract
This research focuses on the synthesis of multi-walled carbon nanotubes (MWCNTs) decorated with TiO2 nanoparticles (NPs) and incorporated in cellulose acetate-collagen film in order to obtain a new biomaterial with potential biomedical applications and improved antimicrobial activity. The successful decoration of the MWCNTs with TiO2 NPs was confirmed by several structural and morphological analysis, such as Fourier transformed infrared spectroscopy, Raman spectroscopy, X-ray diffraction and transmission electron microscopy. The obtained nanocomposites were further incorporated into cellulose acetate-collagen films, at different concentrations and absorption kinetics, antimicrobial activity and in vitro biocompatibility of the obtained films was investigated. The antimicrobial tests sustained that the presence of the nanocomposites into the polymeric matrix is an important aspect in increasing and maintaining the antimicrobial activity of the polymeric wound dressings over time. The biocompatibility and cytotoxicity of the obtained films was evaluated using cellular viability/proliferation assay and fluorescent microscopy which revealed the ability of the obtained materials as potential wound dressing biomaterial.
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Affiliation(s)
- Madalina Elena David
- National Institute for Research and Development in Chemistry and Petrochemistry—ICECHIM, 060021 Bucharest, Romania; (R.M.I.); (R.M.G.); (L.I.); (E.A.); (R.S.)
- Doctoral School of Materials Engineering Department, Valahia University of Targoviste, 130004 Targoviste, Romania
- Correspondence:
| | - Rodica Mariana Ion
- National Institute for Research and Development in Chemistry and Petrochemistry—ICECHIM, 060021 Bucharest, Romania; (R.M.I.); (R.M.G.); (L.I.); (E.A.); (R.S.)
- Doctoral School of Materials Engineering Department, Valahia University of Targoviste, 130004 Targoviste, Romania
| | - Ramona Marina Grigorescu
- National Institute for Research and Development in Chemistry and Petrochemistry—ICECHIM, 060021 Bucharest, Romania; (R.M.I.); (R.M.G.); (L.I.); (E.A.); (R.S.)
| | - Lorena Iancu
- National Institute for Research and Development in Chemistry and Petrochemistry—ICECHIM, 060021 Bucharest, Romania; (R.M.I.); (R.M.G.); (L.I.); (E.A.); (R.S.)
| | | | - Florin Iordache
- Department of Biochemistry, Faculty of Veterinary Medicine, University of Agronomic Science and Veterinary Medicine, 011464 Bucharest, Romania;
| | - Adrian Ionut Nicoara
- Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 011061 Bucharest, Romania;
| | - Elvira Alexandrescu
- National Institute for Research and Development in Chemistry and Petrochemistry—ICECHIM, 060021 Bucharest, Romania; (R.M.I.); (R.M.G.); (L.I.); (E.A.); (R.S.)
| | - Raluca Somoghi
- National Institute for Research and Development in Chemistry and Petrochemistry—ICECHIM, 060021 Bucharest, Romania; (R.M.I.); (R.M.G.); (L.I.); (E.A.); (R.S.)
| | - Sofia Teodorescu
- Institute of Multidisciplinary Research for Science and Technology, Valahia University of Targoviste, 130004 Targoviste, Romania; (S.T.); (A.I.G.)
| | - Anca Irina Gheboianu
- Institute of Multidisciplinary Research for Science and Technology, Valahia University of Targoviste, 130004 Targoviste, Romania; (S.T.); (A.I.G.)
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20
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Taheri S, Bao G, He Z, Mohammadi S, Ravanbakhsh H, Lessard L, Li J, Mongeau L. Injectable, Pore-Forming, Perfusable Double-Network Hydrogels Resilient to Extreme Biomechanical Stimulations. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2102627. [PMID: 34811970 PMCID: PMC8805581 DOI: 10.1002/advs.202102627] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 08/26/2021] [Indexed: 06/13/2023]
Abstract
Biological tissues hinge on blood perfusion and mechanical toughness to function. Injectable hydrogels that possess both high permeability and toughness have profound impacts on regenerative medicine but remain a long-standing challenge. To address this issue, injectable, pore-forming double-network hydrogels are fabricated by orchestrating stepwise gelation and phase separation processes. The interconnected pores of the resulting hydrogels enable direct medium perfusion through organ-sized matrices. The hydrogels are amenable to cell encapsulation and delivery while promoting cell proliferation and spreading. They are also pore insensitive, tough, and fatigue resistant. When tested in biomimetic perfusion bioreactors, the hydrogels maintain physical integrity under prolonged, high-frequency biomechanical stimulations (>6000 000 cycles at 120 Hz). The excellent biomechanical performance suggests the great potential of the new injectable hydrogel technology for repairing mechanically dynamic tissues, such as vocal folds, and other applications, such as tissue engineering, biofabrication, organs-on-chips, drug delivery, and disease modeling.
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Affiliation(s)
- Sareh Taheri
- Department of Mechanical EngineeringMcGill UniversityMontrealQCH3A 0C3Canada
| | - Guangyu Bao
- Department of Mechanical EngineeringMcGill UniversityMontrealQCH3A 0C3Canada
| | - Zixin He
- Department of Mechanical EngineeringMcGill UniversityMontrealQCH3A 0C3Canada
| | - Sepideh Mohammadi
- Department of Mechanical EngineeringMcGill UniversityMontrealQCH3A 0C3Canada
| | - Hossein Ravanbakhsh
- Department of Mechanical EngineeringMcGill UniversityMontrealQCH3A 0C3Canada
| | - Larry Lessard
- Department of Mechanical EngineeringMcGill UniversityMontrealQCH3A 0C3Canada
| | - Jianyu Li
- Department of Mechanical EngineeringMcGill UniversityMontrealQCH3A 0C3Canada
- Department of Biomedical EngineeringMcGill UniversityMontrealQCH3A 2B4Canada
| | - Luc Mongeau
- Department of Mechanical EngineeringMcGill UniversityMontrealQCH3A 0C3Canada
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21
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Munguia-Lopez JG, Jiang T, Ferlatte A, Fajardo-Diaz JL, Munoz-Sandoval E, Tran SD, Kinsella JM. Highly Concentrated Nitrogen‐Doped Carbon Nanotubes in Alginate–Gelatin 3D Hydrogels Enable in Vitro Breast Cancer Spheroid Formation. ADVANCED NANOBIOMED RESEARCH 2021. [DOI: 10.1002/anbr.202100104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Jose G. Munguia-Lopez
- Faculty of Dentistry McGill University Montreal Quebec H3A 0C7 Canada
- Department of Bioengineering McGill University Montreal Quebec H3A 0E9 Canada
| | - Tao Jiang
- Department of Intelligent Machinery and Instrument College of Intelligence Science and Technology National University of Defense Technology Changsha Human 410073 China
| | - Audrey Ferlatte
- Department of Bioengineering McGill University Montreal Quebec H3A 0E9 Canada
| | - Juan L. Fajardo-Diaz
- Advanced Materials Department Instituto Potosino de Investigación Científica y Tecnológica, A.C. (IPICyT) San Luis Potosi San Luis Potosi 78216 Mexico
- Global Aqua Innovation Center and Research Initiative for Supra-Materials Shinshu University 4-17-1 Wakasato Nagano 380-8553 Japan
| | - Emilio Munoz-Sandoval
- Advanced Materials Department Instituto Potosino de Investigación Científica y Tecnológica, A.C. (IPICyT) San Luis Potosi San Luis Potosi 78216 Mexico
| | - Simon D. Tran
- Faculty of Dentistry McGill University Montreal Quebec H3A 0C7 Canada
| | - Joseph M. Kinsella
- Department of Bioengineering McGill University Montreal Quebec H3A 0E9 Canada
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22
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Ravanbakhsh H, Karamzadeh V, Bao G, Mongeau L, Juncker D, Zhang YS. Emerging Technologies in Multi-Material Bioprinting. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2104730. [PMID: 34596923 PMCID: PMC8971140 DOI: 10.1002/adma.202104730] [Citation(s) in RCA: 66] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Revised: 08/10/2021] [Indexed: 05/09/2023]
Abstract
Bioprinting, within the emerging field of biofabrication, aims at the fabrication of functional biomimetic constructs. Different 3D bioprinting techniques have been adapted to bioprint cell-laden bioinks. However, single-material bioprinting techniques oftentimes fail to reproduce the complex compositions and diversity of native tissues. Multi-material bioprinting as an emerging approach enables the fabrication of heterogeneous multi-cellular constructs that replicate their host microenvironments better than single-material approaches. Here, bioprinting modalities are reviewed, their being adapted to multi-material bioprinting is discussed, and their advantages and challenges, encompassing both custom-designed and commercially available technologies are analyzed. A perspective of how multi-material bioprinting opens up new opportunities for tissue engineering, tissue model engineering, therapeutics development, and personalized medicine is offered.
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Affiliation(s)
- Hossein Ravanbakhsh
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, 02139, USA
- Department of Mechanical Engineering, McGill University, Montreal, QC, H3A0C3, Canada
| | - Vahid Karamzadeh
- Department of Biomedical Engineering, McGill University, Montreal, QC, H3A0G1, Canada
| | - Guangyu Bao
- Department of Mechanical Engineering, McGill University, Montreal, QC, H3A0C3, Canada
| | - Luc Mongeau
- Department of Mechanical Engineering, McGill University, Montreal, QC, H3A0C3, Canada
| | - David Juncker
- Department of Biomedical Engineering, McGill University, Montreal, QC, H3A0G1, Canada
| | - Yu Shrike Zhang
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, 02139, USA
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23
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Carbon Nanotubes-Based Hydrogels for Bacterial Eradiation and Wound-Healing Applications. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11209550] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Biocompatible nanomaterials have attracted enormous interest for biomedical applications. Carbonaceous materials, including carbon nanotubes (CNTs), have been widely explored in wound healing and other applications because of their superior physicochemical and potential biomedical properties to the nanoscale level. CNTs-based hydrogels are widely used for wound-healing and antibacterial applications. CNTs-based materials exhibited improved antimicrobial, antibacterial, adhesive, antioxidants, and mechanical properties, which are beneficial for the wound-healing process. This review concisely discussed the preparation of CNTs-based hydrogels and their antibacterial and wound-healing applications. The conductive potential of CNTs and their derivatives is discussed. It has been observed that the conductivity of CNTs is profoundly affected by their structure, temperature, and functionalization. CNTs properties can be easily modified by surface functionalization. CNTs-based composite hydrogels demonstrated superior antibacterial potential to corresponding pure polymer hydrogels. The accelerated wound healing was observed with CNTs-based hydrogels.
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24
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Ravanbakhsh H, Bao G, Luo Z, Mongeau LG, Zhang YS. Composite Inks for Extrusion Printing of Biological and Biomedical Constructs. ACS Biomater Sci Eng 2021; 7:4009-4026. [PMID: 34510905 DOI: 10.1021/acsbiomaterials.0c01158] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Extrusion-based three-dimensional (3D) printing is an emerging technology for the fabrication of complex structures with various biological and biomedical applications. The method is based on the layer-by-layer construction of the product using a printable ink. The material used as the ink should possess proper rheological properties and desirable performances. Composite materials, which are extensively used in 3D printing applications, can improve the printability and offer superior performances for the printed constructs. Herein, we review composite inks with a focus on composite hydrogels. The properties of different additives including fibers and nanoparticles are discussed. The performances of various composite inks in biological and biomedical systems are delineated through analyzing the synergistic effects between the composite ink components. Different applications, including tissue engineering, tissue model engineering, soft robotics, and four-dimensional printing, are selected to demonstrate how 3D-printable composite inks are exploited to achieve various desired functionality. This review finally presents an outlook of future perspectives on the design of composite inks.
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Affiliation(s)
- Hossein Ravanbakhsh
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, Massachusetts 02139, United States.,Department of Mechanical Engineering, McGill University, Montreal, QC H3A0C3, Canada
| | - Guangyu Bao
- Department of Mechanical Engineering, McGill University, Montreal, QC H3A0C3, Canada
| | - Zeyu Luo
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, Massachusetts 02139, United States.,Department of Orthopedics, West China Hospital, West China School of Medicine, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China
| | - Luc G Mongeau
- Department of Mechanical Engineering, McGill University, Montreal, QC H3A0C3, Canada
| | - Yu Shrike Zhang
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, Massachusetts 02139, United States
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Bao G, Huo R, Ma Z, Strong M, Valiei A, Jiang S, Liu S, Mongeau L, Li J. Ionotronic Tough Adhesives with Intrinsic Multifunctionality. ACS APPLIED MATERIALS & INTERFACES 2021; 13:37849-37861. [PMID: 34313124 DOI: 10.1021/acsami.1c09231] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Ionotronic hydrogels find wide applications in flexible electronics, wearable/implantable devices, soft robotics, and human-machine interfaces. Their performance and practical translation have been bottlenecked by poor adhesiveness, limited mechanical properties, and the lack of biological functions. The remedies are often associated with complex formulations and sophisticated processing. Here, we report a rational design and facile synthesis of ionotronic tough adhesives (i-TAs), which have excellent mechanical, physical, electrical, and biological properties and promise high scalability and translational potential. They consist of an interpenetrating network with high-density amine groups and highly mobile chains, which enable intrinsic adhesiveness, self-healing, ionic stability, cytocompatibility, and antimicrobial functions. The i-TAs in both pristine and swollen states possess high toughness, stretchability, and strong adhesion to diverse substrates such as tissues and elastomers. The superior mechanical performance is achieved simultaneously with high ionic conductivity and stability in electrolyte solutions. We further demonstrate the use of i-TAs as wearable devices, strain sensors, and sensory sealants. This work is expected to open avenues for new ionotronics with novel functions and stimulate the development and translation of ionotronics.
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Affiliation(s)
- Guangyu Bao
- Department of Mechanical Engineering, McGill University, Montreal, Quebec H3A 0C3, Canada
| | - Ran Huo
- Department of Mechanical Engineering, McGill University, Montreal, Quebec H3A 0C3, Canada
| | - Zhenwei Ma
- Department of Mechanical Engineering, McGill University, Montreal, Quebec H3A 0C3, Canada
| | - Mitchell Strong
- Department of Mechanical Engineering, McGill University, Montreal, Quebec H3A 0C3, Canada
| | - Amin Valiei
- Department of Chemical Engineering, McGill University, Montreal, Quebec H3A 0C5, Canada
| | - Shuaibing Jiang
- Department of Mechanical Engineering, McGill University, Montreal, Quebec H3A 0C3, Canada
| | - Shiyu Liu
- Department of Mechanical Engineering, McGill University, Montreal, Quebec H3A 0C3, Canada
| | - Luc Mongeau
- Department of Mechanical Engineering, McGill University, Montreal, Quebec H3A 0C3, Canada
| | - Jianyu Li
- Department of Mechanical Engineering, McGill University, Montreal, Quebec H3A 0C3, Canada
- Department of Biomedical Engineering, McGill University, Montreal, Quebec H3A 2B4, Canada
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Nowak M, Barańska-Rybak W. Nanomaterials as a Successor of Antibiotics in Antibiotic-Resistant, Biofilm Infected Wounds? Antibiotics (Basel) 2021; 10:antibiotics10080941. [PMID: 34438991 PMCID: PMC8389008 DOI: 10.3390/antibiotics10080941] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Revised: 07/28/2021] [Accepted: 08/01/2021] [Indexed: 11/26/2022] Open
Abstract
Chronic wounds are a growing problem for both society and patients. They generate huge costs for treatment and reduce the quality of life of patients. The greatest challenge when treating a chronic wound is prolonged infection, which is commonly caused by biofilm. Biofilm makes bacteria resistant to individuals’ immune systems and conventional treatment. As a result, new treatment options, including nanomaterials, are being tested and implemented. Nanomaterials are particles with at least one dimension between 1 and 100 nM. Lipids, liposomes, cellulose, silica and metal can be carriers of nanomaterials. This review’s aim is to describe in detail the mode of action of those molecules that have been proven to have antimicrobial effects on biofilm and therefore help to eradicate bacteria from chronic wounds. Nanoparticles seem to be a promising treatment option for infection management, which is essential for the final stage of wound healing, which is complete wound closure.
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Aligned Collagen-CNT Nanofibrils and the Modulation Effect on Ovarian Cancer Cells. JOURNAL OF COMPOSITES SCIENCE 2021; 5. [PMID: 35664989 PMCID: PMC9164112 DOI: 10.3390/jcs5060148] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Fibrillar collagen is a one-dimensional biopolymer and is the most abundant structural protein in the extracellular matrix (ECM) of connective tissues. Due to the unique properties of carbon nanotubes (CNTs), considerable attention has been given to the application of CNTs in developing biocomposite materials for tissue engineering and drug delivery. When introduced to tissues, CNTs inevitably interact and integrate with collagen and impose a discernible effect on cells in the vicinity. The positive effect of the collagen-CNT (COL-CNT) matrix in tissue regeneration and the cytotoxicity of free CNTs have been investigated extensively. In this study, we aimed to examine the effect of COL-CNT on mediating the interaction between the matrix and SKOV3 ovarian cancer cells. We generated unidirectionally aligned collagen and COL-CNT nanofibrils, mimicking the structure and dimension of collagen fibrils in native tissues. AFM analysis revealed that the one-dimensional structure, high stiffness, and low adhesion of COL-CNT greatly facilitated the polarization of SKOV3 cells by regulating the β−1 integrin-mediated cell–matrix interaction, cytoskeleton rearrangement, and cell migration. Protein and gene level analyses implied that both collagen and COL-CNT matrices induced the epithelial–mesenchymal transition (EMT), and the COL-CNT matrix prompted a higher level of cell transformation. However, the induced cells expressed CD44 at a reduced level and MMP2 at an increased level, and they were responsive to the chemotherapy drug gemcitabine. The results suggested that the COL-CNT matrix induced the transdifferentiation of the epithelial cancer cells to mature, less aggressive, and less potent cells, which are inapt for tumor metastasis and chemoresistance. Thus, the presence of CNT in a collagen matrix is unlikely to cause an adverse effect on cancer patients if a controlled dose of CNT is used for drug delivery or tissue regeneration.
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Fu C, Qi Z, Zhao C, Kong W, Li H, Guo W, Yang X. Enhanced wound repair ability of arginine-chitosan nanocomposite membrane through the antimicrobial peptides-loaded polydopamine-modified graphene oxide. J Biol Eng 2021; 15:17. [PMID: 34022941 PMCID: PMC8141257 DOI: 10.1186/s13036-021-00268-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 05/07/2021] [Indexed: 11/16/2022] Open
Abstract
Skin wound healing is a complicated and lengthy process, which is influenced by multiple factors and need a suitable cellular micro-environment. For skin wound, wound dressings remain a cornerstone of dermatologic therapy at present. The dressing material can create an effective protective environment for the wound, and the interactions between the dressing and the wound has a great impact on the wound healing efficiency. An ideal wound dressing materials should have good biocompatibility, moisturizing property, antibacterial property and mechanical strength, and can effectively prevent wound infection and promote wound healing. In this study, in order to design wound dressing materials endowed with excellent antibacterial and tissue repair properties, we attempted to load antimicrobial peptides onto dopmine-modified graphene oxide (PDA@GO) using lysozyme (ly) as a model drug. Then, functionalized GO was used to the surface modification of arginine-modified chitosan (CS-Arg) membrane. To evaluate the potential of the prepared nanocomposite membrane in wound dressing application, the surface morphology, hydrophilic, mechanical properties, antimicrobial activity, and cytocompatibility of the resulting nanocomposite membrane were analyzed. The results revealed that prepared nanocomposite membrane exhibited excellent hydrophilic, mechanical strength and antimicrobial activity, which can effectively promote cell growth and adhesion. In particular, using PDA@GO as drug carrier can effectively maintain the activity of antimicrobial peptides, and can maximize the antibacterial properties of the nanocomposite membrane. Finally, we used rat full-thickness wound models to observe wound healing, and the surface interactions between the prepared nanocomposite membrane and the wound. The results indicated that nanocomposite membrane can obviously accelerated wound closure, and the wounds showed reduced inflammation, improved angiogenesis and accelerated re-epithelialization. Therefore, incorporation of antimicrobial peptides-functionalize graphene oxide (ly-PDA@GO) into CS-Arg membrane was a viable strategy for fabricating excellent wound dressing. Together, this study not only prepared a wound dressing with excellent tissue repair ability, but also provided a novel idea for the development of graphene oxide-based antibacterial dressing.
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Affiliation(s)
- Chuan Fu
- Department of Orthopaedic Surgery, The Second Hospital of Jilin University, Changchun, 130021, China
| | - Zhiping Qi
- Department of Orthopaedic Surgery, The Second Hospital of Jilin University, Changchun, 130021, China
| | - Chengliang Zhao
- Department of Spinal Surgery, The Affiliated Hospital of Qingdao University, Qingdao, 266000, China
| | - Weijian Kong
- Department of Orthopaedic Surgery, The Second Hospital of Jilin University, Changchun, 130021, China
| | - Hongru Li
- Department of Orthopaedic Surgery, The Second Hospital of Jilin University, Changchun, 130021, China
| | - Wenlai Guo
- Department of Spinal Surgery, The Affiliated Hospital of Qingdao University, Qingdao, 266000, China.
| | - Xiaoyu Yang
- Department of Orthopaedic Surgery, The Second Hospital of Jilin University, Changchun, 130021, China.
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Pormohammad A, Monych NK, Ghosh S, Turner DL, Turner RJ. Nanomaterials in Wound Healing and Infection Control. Antibiotics (Basel) 2021; 10:antibiotics10050473. [PMID: 33919072 PMCID: PMC8143158 DOI: 10.3390/antibiotics10050473] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/14/2021] [Accepted: 04/19/2021] [Indexed: 01/05/2023] Open
Abstract
Wounds continue to be a serious medical concern due to their increasing incidence from injuries, surgery, burns and chronic diseases such as diabetes. Delays in the healing process are influenced by infectious microbes, especially when they are in the biofilm form, which leads to a persistent infection. Biofilms are well known for their increased antibiotic resistance. Therefore, the development of novel wound dressing drug formulations and materials with combined antibacterial, antibiofilm and wound healing properties are required. Nanomaterials (NM) have unique properties due to their size and very large surface area that leads to a wide range of applications. Several NMs have antimicrobial activity combined with wound regeneration features thus give them promising applicability to a variety of wound types. The idea of NM-based antibiotics has been around for a decade at least and there are many recent reviews of the use of nanomaterials as antimicrobials. However, far less attention has been given to exploring if these NMs actually improve wound healing outcomes. In this review, we present an overview of different types of nanomaterials explored specifically for wound healing properties combined with infection control.
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Affiliation(s)
- Ali Pormohammad
- Department of Biological Sciences, Faculty of Science, University of Calgary, 2500 University Dr. N.W., Calgary, AB T2N 1N4, Canada; (A.P.); (N.K.M.)
| | - Nadia K. Monych
- Department of Biological Sciences, Faculty of Science, University of Calgary, 2500 University Dr. N.W., Calgary, AB T2N 1N4, Canada; (A.P.); (N.K.M.)
| | - Sougata Ghosh
- Department of Microbiology, School of Science, RK University, Rajkot 360020, India;
| | - Diana L. Turner
- Department of Family Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 1N4, Canada;
| | - Raymond J. Turner
- Department of Biological Sciences, Faculty of Science, University of Calgary, 2500 University Dr. N.W., Calgary, AB T2N 1N4, Canada; (A.P.); (N.K.M.)
- Correspondence: ; Tel.: +1-403-220-4308
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Abstract
The family of carbon nanostructures comprises several members, such as fullerenes, nano-onions, nanodots, nanodiamonds, nanohorns, nanotubes, and graphene-based materials. Their unique electronic properties have attracted great interest for their highly innovative potential in nanomedicine. However, their hydrophobic nature often requires organic solvents for their dispersibility and processing. In this review, we describe the green approaches that have been developed to produce and functionalize carbon nanomaterials for biomedical applications, with a special focus on the very latest reports.
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Bao G, Jiang T, Ravanbakhsh H, Reyes A, Ma Z, Strong M, Wang H, Kinsella JM, Li J, Mongeau L. Triggered micropore-forming bioprinting of porous viscoelastic hydrogels. MATERIALS HORIZONS 2020; 7:2336-2347. [PMID: 33841881 PMCID: PMC8030731 DOI: 10.1039/d0mh00813c] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Cell-laden scaffolds of architecture and mechanics that mimic those of the host tissues are important for a wide range of biomedical applications but remain challenging to bioprint. To address these challenges, we report a new method called triggered micropore-forming bioprinting. The approach can yield cell-laden scaffolds of defined architecture and interconnected pores over a range of sizes, encompassing that of many cell types. The viscoelasticity of the bioprinted scaffold can match that of biological tissues and be tuned independently of porosity and stiffness. The bioprinted scaffold also exhibits superior mechanical robustness despite high porosity. The bioprinting method and the resulting scaffolds support cell spreading, migration, and proliferation. The potential of the 3D bioprinting system is demonstrated for vocal fold tissue engineering and as an in vitro cancer model. Other possible applications are foreseen for tissue repair, regenerative medicine, organ-on-chip, drug screening, organ transplantation, and disease modeling.
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Affiliation(s)
- Guangyu Bao
- Department of Mechanical Engineering, McGill University, 817 Sherbrooke St W, Montreal, QC H3A 0C3, Canada
| | - Tao Jiang
- Department of Mechanical Engineering, McGill University, 817 Sherbrooke St W, Montreal, QC H3A 0C3, Canada
| | - Hossein Ravanbakhsh
- Department of Mechanical Engineering, McGill University, 817 Sherbrooke St W, Montreal, QC H3A 0C3, Canada
| | - Alicia Reyes
- Department of Mechanical Engineering, McGill University, 817 Sherbrooke St W, Montreal, QC H3A 0C3, Canada
- Department of Biomedical Engineering, McGill University, 3775 rue University, Montreal, QC H3A 2B4, Canada
| | - Zhenwei Ma
- Department of Mechanical Engineering, McGill University, 817 Sherbrooke St W, Montreal, QC H3A 0C3, Canada
| | - Mitchell Strong
- Department of Mechanical Engineering, McGill University, 817 Sherbrooke St W, Montreal, QC H3A 0C3, Canada
| | - Huijie Wang
- Department of Mechanical Engineering, McGill University, 817 Sherbrooke St W, Montreal, QC H3A 0C3, Canada
| | - Joseph M Kinsella
- Department of Bioengineering, McGill University, 817 Sherbrooke St W, Montreal, QC H3A 0C3, Canada
| | - Jianyu Li
- Department of Mechanical Engineering, McGill University, 817 Sherbrooke St W, Montreal, QC H3A 0C3, Canada
- Department of Biomedical Engineering, McGill University, 3775 rue University, Montreal, QC H3A 2B4, Canada
| | - Luc Mongeau
- Department of Mechanical Engineering, McGill University, 817 Sherbrooke St W, Montreal, QC H3A 0C3, Canada
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