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Deng Y, Li L, Xu J, Yao Y, Ding J, Wang L, Luo C, Yang W, Li L. A biomimetic human disease model of bacterial keratitis using a cornea-on-a-chip system. Biomater Sci 2024; 12:5239-5252. [PMID: 39233608 DOI: 10.1039/d4bm00833b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/06/2024]
Abstract
Bacterial keratitis is a common form of inflammation caused by the bacterial invasion of the corneal stroma after trauma. In extreme cases, it can lead to severe visual impairment or even blindness; therefore, timely medical intervention is imperative. Unfortunately, widespread misuse of antibiotics has led to the development of drug resistance. In recent years, organ-on-chips that integrate multiple cell co-cultures have extensive applications in fundamental research and drug screening. In this study, immortalized human corneal epithelial cells and primary human corneal fibroblasts were co-cultured on a porous polydimethylsiloxane membrane to create a cornea-on-a-chip model. The developed multilayer epithelium closely mimicked clinical conditions, demonstrating high structural resemblance and repeatability. By introducing a consistently defective epithelium and bacterial infection using the space-occupying method, we successfully established an in vitro model of bacterial keratitis using S. aureus. We validate this model by evaluating the efficacy of antibiotics, such as levofloxacin, tobramycin, and chloramphenicol, through simultaneously observing the reactions of bacteria and the two cell types to these antibiotics. Our study has revealed the barrier function of epithelium of the model and differentiated efficacy of three drugs in terms of bactericidal activity, reducing cellular apoptosis, and mitigating scar formation. Altogether, the cornea on chip enables the assessment of ocular antibiotics, distinguishing the impact on corneal cells and structural integrity. This study introduced a biomimetic in vitro disease model to evaluate drug efficacy and provided significant insights into the extensive effects of antibiotics on diverse cell populations within the cornea.
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Affiliation(s)
- Yudan Deng
- School of Ophthalmology & Optometry, Eye Hospital, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang, China.
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, China.
| | - Lingjun Li
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, China.
- Wenzhou Key Laboratory of Biomedical Imaging, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, China
| | - Jian Xu
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, China.
| | - Yili Yao
- School of Ophthalmology & Optometry, Eye Hospital, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang, China.
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, China.
| | - Jiangtao Ding
- School of Ophthalmology & Optometry, Eye Hospital, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang, China.
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, China.
| | - Lei Wang
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, China.
| | - Chunxiong Luo
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, China.
- Center for Quantitative Biology, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China
- The State Key Laboratory for Artificial Microstructures and Mesoscopic Physics, School of Physics, Peking University, Beijing, China
| | - Wei Yang
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, China.
| | - Lingli Li
- School of Ophthalmology & Optometry, Eye Hospital, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang, China.
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, China.
- Zhejiang Engineering Research Center for Tissue Repair Materials, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, China
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Tati V, Muthukumar V S, Shukla S. Mesenchymal vs. epithelial extracellular vesicles in corneal epithelial repair, apoptosis, and immunomodulation: An in vitro study. Exp Eye Res 2024; 247:110027. [PMID: 39127238 DOI: 10.1016/j.exer.2024.110027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Revised: 07/29/2024] [Accepted: 08/06/2024] [Indexed: 08/12/2024]
Abstract
Corneal injuries often lead to epithelial damage, apoptosis, and inflammation which impact visual function. Effective epithelial healing is critical for optimal vision and functioning of the cornea. Mesenchymal stem/stromal cells (MSCs)-derived extracellular vesicles (EVs) present promising avenues for cell-free therapy, however, evaluation of their specific roles in corneal epithelial injury requires further investigations with due consideration to the endogenous human corneal epithelial cell-derived EVs (HCEC-EVs). This study aims to isolate and characterize the EVs from a commonly available human corneal epithelial cell line (HCE-2 [50. B1], ATCC) and evaluate their corneal epithelial repair, anti-apoptotic, and immunomodulatory potential in comparison with human bone marrow mesenchymal stem cell-derived EVs (BM-MSC-EVs) in vitro. Both the BM-MSC- and HCEC-EVs exhibited similar morphology with a diameter <150 nm. However, the yield of EVs from HCECs was higher than that of BM-MSCs. Nanoparticle tracking analysis revealed an average EV size of ∼120 nm, while western blotting confirmed the presence of CD63, CD81, and TSG101, whereas Calnexin could not be detected in the BM-MSC- and HCEC-EVs. The corneal epithelial repair was monitored through in vitro wound healing assay, whereas apoptosis was studied through flow cytometry-based Propidium iodide staining in H2O2-treated cells. IL-1β-stimulated HCECs were treated with BM-MSC- and HCEC-EVs for 24 h and expression of pro- (IL-6 and TNF-α) and anti-inflammatory (IL-10 and TGF-β) cytokines was evaluated through ELISA. Our results, limited to in vitro investigations, suggest that compared with HCEC-EVs, BM-MSC-EVs showed: i) accelerated corneal epithelial healing, ii) enhanced anti-apoptotic potential, and iii) improved anti-inflammatory properties, in cultured HCECs.
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Affiliation(s)
- Vasudeva Tati
- Prof. Brien Holden Eye Research Centre, Hyderabad Eye Research Foundation, L V Prasad Eye Institute, Hyderabad, 500034, India; Sudhakar and Sreekanth Ravi Stem Cell Biology Laboratory, Centre for Ocular Regeneration, L V Prasad Eye Institute, Hyderabad, 500034, India
| | - Sai Muthukumar V
- Electron Microscopy Laboratory, Department of Physics, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam, Sri Sathya Sai District, Andhra Pradesh, India
| | - Sachin Shukla
- Prof. Brien Holden Eye Research Centre, Hyderabad Eye Research Foundation, L V Prasad Eye Institute, Hyderabad, 500034, India; Sudhakar and Sreekanth Ravi Stem Cell Biology Laboratory, Centre for Ocular Regeneration, L V Prasad Eye Institute, Hyderabad, 500034, India.
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3
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Kim J, Ro J, Cho YK. Vascularized platforms for investigating cell communication via extracellular vesicles. BIOMICROFLUIDICS 2024; 18:051504. [PMID: 39323481 PMCID: PMC11421861 DOI: 10.1063/5.0220840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2024] [Accepted: 09/03/2024] [Indexed: 09/27/2024]
Abstract
The vascular network plays an essential role in the maintenance of all organs in the body via the regulated delivery of oxygen and nutrients, as well as tissue communication via the transfer of various biological signaling molecules. It also serves as a route for drug administration and affects pharmacokinetics. Due to this importance, engineers have sought to create physiologically relevant and reproducible vascular systems in tissue, considering cell-cell and extracellular matrix interaction with structural and physical conditions in the microenvironment. Extracellular vesicles (EVs) have recently emerged as important carriers for transferring proteins and genetic material between cells and organs, as well as for drug delivery. Vascularized platforms can be an ideal system for studying interactions between blood vessels and EVs, which are crucial for understanding EV-mediated substance transfer in various biological situations. This review summarizes recent advances in vascularized platforms, standard and microfluidic-based techniques for EV isolation and characterization, and studies of EVs in vascularized platforms. It provides insights into EV-related (patho)physiological regulations and facilitates the development of EV-based therapeutics.
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Cheng KKW, Fingerhut L, Duncan S, Prajna NV, Rossi AG, Mills B. In vitro and ex vivo models of microbial keratitis: Present and future. Prog Retin Eye Res 2024; 102:101287. [PMID: 39004166 DOI: 10.1016/j.preteyeres.2024.101287] [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: 04/03/2024] [Revised: 07/09/2024] [Accepted: 07/10/2024] [Indexed: 07/16/2024]
Abstract
Microbial keratitis (MK) is an infection of the cornea, caused by bacteria, fungi, parasites, or viruses. MK leads to significant morbidity, being the fifth leading cause of blindness worldwide. There is an urgent requirement to better understand pathogenesis in order to develop novel diagnostic and therapeutic approaches to improve patient outcomes. Many in vitro, ex vivo and in vivo MK models have been developed and implemented to meet this aim. Here, we present current in vitro and ex vivo MK model systems, examining their varied design, outputs, reporting standards, and strengths and limitations. Major limitations include their relative simplicity and the perceived inability to study the immune response in these MK models, an aspect widely accepted to play a significant role in MK pathogenesis. Consequently, there remains a dependence on in vivo models to study this aspect of MK. However, looking to the future, we draw from the broader field of corneal disease modelling, which utilises, for example, three-dimensional co-culture models and dynamic environments observed in bioreactors and organ-on-a-chip scenarios. These remain unexplored in MK research, but incorporation of these approaches will offer further advances in the field of MK corneal modelling, in particular with the focus of incorporation of immune components which we anticipate will better recapitulate pathogenesis and yield novel findings, therefore contributing to the enhancement of MK outcomes.
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Affiliation(s)
- Kelvin Kah Wai Cheng
- Centre for Inflammation Research, Institute of Regeneration and Repair, University of Edinburgh, United Kingdom
| | - Leonie Fingerhut
- Centre for Inflammation Research, Institute of Regeneration and Repair, University of Edinburgh, United Kingdom
| | - Sheelagh Duncan
- Centre for Inflammation Research, Institute of Regeneration and Repair, University of Edinburgh, United Kingdom
| | - N Venkatesh Prajna
- Department of Cornea and Refractive Surgery Services, Aravind Eye Hospital and Postgraduate Institute of Ophthalmology, Madurai, Tamil Nadu, India
| | - Adriano G Rossi
- Centre for Inflammation Research, Institute of Regeneration and Repair, University of Edinburgh, United Kingdom
| | - Bethany Mills
- Centre for Inflammation Research, Institute of Regeneration and Repair, University of Edinburgh, United Kingdom.
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Dasgupta I, Rangineni DP, Abdelsaid H, Ma Y, Bhushan A. Tiny Organs, Big Impact: How Microfluidic Organ-on-Chip Technology Is Revolutionizing Mucosal Tissues and Vasculature. Bioengineering (Basel) 2024; 11:476. [PMID: 38790343 PMCID: PMC11117503 DOI: 10.3390/bioengineering11050476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 05/04/2024] [Accepted: 05/07/2024] [Indexed: 05/26/2024] Open
Abstract
Organ-on-chip (OOC) technology has gained importance for biomedical studies and drug development. This technology involves microfluidic devices that mimic the structure and function of specific human organs or tissues. OOCs are a promising alternative to traditional cell-based models and animals, as they provide a more representative experimental model of human physiology. By creating a microenvironment that closely resembles in vivo conditions, OOC platforms enable the study of intricate interactions between different cells as well as a better understanding of the underlying mechanisms pertaining to diseases. OOCs can be integrated with other technologies, such as sensors and imaging systems to monitor real-time responses and gather extensive data on tissue behavior. Despite these advances, OOCs for many organs are in their initial stages of development, with several challenges yet to be overcome. These include improving the complexity and maturity of these cellular models, enhancing their reproducibility, standardization, and scaling them up for high-throughput uses. Nonetheless, OOCs hold great promise in advancing biomedical research, drug discovery, and personalized medicine, benefiting human health and well-being. Here, we review several recent OOCs that attempt to overcome some of these challenges. These OOCs with unique applications can be engineered to model organ systems such as the stomach, cornea, blood vessels, and mouth, allowing for analyses and investigations under more realistic conditions. With this, these models can lead to the discovery of potential therapeutic interventions. In this review, we express the significance of the relationship between mucosal tissues and vasculature in organ-on-chip (OOC) systems. This interconnection mirrors the intricate physiological interactions observed in the human body, making it crucial for achieving accurate and meaningful representations of biological processes within OOC models. Vasculature delivers essential nutrients and oxygen to mucosal tissues, ensuring their proper function and survival. This exchange is critical for maintaining the health and integrity of mucosal barriers. This review will discuss the OOCs used to represent the mucosal architecture and vasculature, and it can encourage us to think of ways in which the integration of both can better mimic the complexities of biological systems and gain deeper insights into various physiological and pathological processes. This will help to facilitate the development of more accurate predictive models, which are invaluable for advancing our understanding of disease mechanisms and developing novel therapeutic interventions.
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Affiliation(s)
| | | | | | | | - Abhinav Bhushan
- Department of Biomedical Engineering, Illinois Institute of Technology, Chicago, IL 60616, USA; (I.D.); (D.P.R.); (H.A.); (Y.M.)
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Ponmozhi J, Dhinakaran S, Kocsis D, Iván K, Erdő F. Models for barrier understanding in health and disease in lab-on-a-chips. Tissue Barriers 2024; 12:2221632. [PMID: 37294075 PMCID: PMC11042069 DOI: 10.1080/21688370.2023.2221632] [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: 02/03/2023] [Accepted: 05/31/2023] [Indexed: 06/10/2023] Open
Abstract
The maintenance of body homeostasis relies heavily on physiological barriers. Dysfunction of these barriers can lead to various pathological processes, including increased exposure to toxic materials and microorganisms. Various methods exist to investigate barrier function in vivo and in vitro. To investigate barrier function in a highly reproducible manner, ethically, and high throughput, researchers have turned to non-animal techniques and micro-scale technologies. In this comprehensive review, the authors summarize the current applications of organ-on-a-chip microfluidic devices in the study of physiological barriers. The review covers the blood-brain barrier, ocular barriers, dermal barrier, respiratory barriers, intestinal, hepatobiliary, and renal/bladder barriers under both healthy and pathological conditions. The article then briefly presents placental/vaginal, and tumour/multi-organ barriers in organ-on-a-chip devices. Finally, the review discusses Computational Fluid Dynamics in microfluidic systems that integrate biological barriers. This article provides a concise yet informative overview of the current state-of-the-art in barrier studies using microfluidic devices.
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Affiliation(s)
- J. Ponmozhi
- Microfluidics Laboratory, Department of Mechanical Engineering, IPS Academy-Institute of Engineering Science, Indore, India
| | - S. Dhinakaran
- The Centre for Fluid Dynamics, Department of Mechanical Engineering, Indian Institute of Technology Indore, Indore, India
| | - Dorottya Kocsis
- Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, Budapest, Hungary
| | - Kristóf Iván
- Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, Budapest, Hungary
| | - Franciska Erdő
- Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, Budapest, Hungary
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R N, Aggarwal A, Sravani AB, Mallya P, Lewis S. Organ-On-A-Chip: An Emerging Research Platform. Organogenesis 2023; 19:2278236. [PMID: 37965897 PMCID: PMC10653779 DOI: 10.1080/15476278.2023.2278236] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 10/27/2023] [Indexed: 11/16/2023] Open
Abstract
In drug development, conventional preclinical and clinical testing stages rely on cell cultures and animal experiments, but these methods may fall short of fully representing human biology. To overcome this limitation, the emergence of organ-on-a-chip (OOC) technology has sparked interest as a transformative approach in drug testing research. By closely replicating human organ responses to external signals, OOC devices hold immense potential in revolutionizing drug efficacy and safety predictions. This review focuses on the advancements, applications, and prospects of OOC devices in drug testing. Based on the latest advances in the field of OOC systems and their clinical applications, this review reflects the effectiveness of OOC devices in replacing human volunteers in certain clinical studies. This review underscores the critical role of OOC technology in transforming drug testing methodologies.
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Affiliation(s)
- Nithin R
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal, Karnataka, India
| | - Ayushi Aggarwal
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal, Karnataka, India
| | - Anne Boyina Sravani
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal, Karnataka, India
| | - Pooja Mallya
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal, Karnataka, India
| | - Shaila Lewis
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal, Karnataka, India
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She W, Shen C, Ying Y, Meng Q. Fabrication of sac-like hydrogel membranes for replicating curved tissue barriers on chips. LAB ON A CHIP 2023; 24:85-96. [PMID: 38018218 DOI: 10.1039/d3lc00807j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2023]
Abstract
Current organ-on-a-chip (OOC) systems cannot mimic in vivo tissue barriers that feature curved geometries and rhythmic movement. This is due to the lack of a relevant membrane that can reproduce the natural biochemical and physical properties of a basement membrane, especially the characteristic sac-like structure possessed by multiple tissue barriers. To address this challenge, a sac-like hydrogel membrane is fabricated here using a one-step simple methodology inspired by soap bubble formation. Di-acrylated Pluronic® F127 (F127-DA) is a hydrogel that exhibits excellent mechanical properties, stably withstanding rhythmic mechanical stretching and fluid flow for at least 24 h. Using this hydrogel to make a membrane, a complex lung-on-a-chip device is successfully constructed, effectively replicating the alveolar-capillary barrier and demonstrating cellular function under physiological respiratory conditions. This membrane offers a crucial platform for replicating sac-like tissue barriers.
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Affiliation(s)
- Wenqi She
- Key Laboratory of Biomass Chemical Engineering (Education Ministry), College of Chemical and Biological Engineering, Zhejiang University, 38 Zheda Road, Hangzhou, Zhejiang 310027, China.
| | - Chong Shen
- Key Laboratory of Biomass Chemical Engineering (Education Ministry), College of Chemical and Biological Engineering, Zhejiang University, 38 Zheda Road, Hangzhou, Zhejiang 310027, China.
| | - Yinghua Ying
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China
| | - Qin Meng
- Key Laboratory of Biomass Chemical Engineering (Education Ministry), College of Chemical and Biological Engineering, Zhejiang University, 38 Zheda Road, Hangzhou, Zhejiang 310027, China.
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Abdalkader RK, Fujita T. Corneal epithelium models for safety assessment in drug development: Present and future directions. Exp Eye Res 2023; 237:109697. [PMID: 37890755 DOI: 10.1016/j.exer.2023.109697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 10/18/2023] [Accepted: 10/24/2023] [Indexed: 10/29/2023]
Abstract
The human corneal epithelial barrier plays a crucial role in drug testing studies, including drug absorption, distribution, metabolism, and excretion (ADME), as well as toxicity testing during the preclinical stages of drug development. However, despite the valuable insights gained from animal and current in vitro models, there remains a significant discrepancy between preclinical drug predictions and actual clinical outcomes. Additionally, there is a growing emphasis on adhering to the 3R principles (refine, reduce, replace) to minimize the use of animals in testing. To tackle these challenges, there is a rising demand for alternative in vitro models that closely mimic the human corneal epithelium. Recently, remarkable advancements have been made in two key areas: microphysiological systems (MPS) or organs-on-chips (OoCs), and stem cell-derived organoids. These cutting-edge platforms integrate four major disciplines: stem cells, microfluidics, bioprinting, and biosensing technologies. This integration holds great promise in developing powerful and biomimetic models of the human cornea.
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Affiliation(s)
- Rodi Kado Abdalkader
- Ritsumeikan Global Innovation Research Organization (R-GIRO), Ritsumeikan University, 1-1-1 Noji-Higashi, Kusatsu, Shiga, 525-8577, Japan.
| | - Takuya Fujita
- Ritsumeikan Global Innovation Research Organization (R-GIRO), Ritsumeikan University, 1-1-1 Noji-Higashi, Kusatsu, Shiga, 525-8577, Japan; Department of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Noji-Higashi, Kusatsu, Shiga, 525-8577, Japan
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Yang B, Lin Y, Huang Y, Zhu N, Shen YQ. Extracellular vesicles modulate key signalling pathways in refractory wound healing. BURNS & TRAUMA 2023; 11:tkad039. [PMID: 38026441 PMCID: PMC10654481 DOI: 10.1093/burnst/tkad039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Revised: 05/10/2023] [Accepted: 06/22/2023] [Indexed: 12/01/2023]
Abstract
Chronic wounds are wounds that cannot heal properly due to various factors, such as underlying diseases, infection or reinjury, and improper healing of skin wounds and ulcers can cause a serious economic burden. Numerous studies have shown that extracellular vesicles (EVs) derived from stem/progenitor cells promote wound healing, reduce scar formation and have significant advantages over traditional treatment methods. EVs are membranous particles that carry various bioactive molecules from their cellular origins, such as cytokines, nucleic acids, enzymes, lipids and proteins. EVs can mediate cell-to-cell communication and modulate various physiological processes, such as cell differentiation, angiogenesis, immune response and tissue remodelling. In this review, we summarize the recent advances in EV-based wound healing, focusing on the signalling pathways that are regulated by EVs and their cargos. We discuss how EVs derived from different types of stem/progenitor cells can promote wound healing and reduce scar formation by modulating the Wnt/β-catenin, phosphoinositide 3-kinase/protein kinase B/mammalian target of rapamycin, vascular endothelial growth factor, transforming growth factor β and JAK-STAT pathways. Moreover, we also highlight the challenges and opportunities for engineering or modifying EVs to enhance their efficacy and specificity for wound healing.
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Affiliation(s)
- Bowen Yang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, Renmin South Road, Wuhou District, Chengdu 610041, China
| | - Yumeng Lin
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, Renmin South Road, Wuhou District, Chengdu 610041, China
| | - Yibo Huang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, Renmin South Road, Wuhou District, Chengdu 610041, China
| | - Nanxi Zhu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, Renmin South Road, Wuhou District, Chengdu 610041, China
| | - Ying-Qiang Shen
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, Renmin South Road, Wuhou District, Chengdu 610041, China
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11
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Yamagata Y, Ide T. A Novel Riboflavin Formulation for Corneal Delivery Without Damaging Epithelial Cells. Transl Vis Sci Technol 2023; 12:10. [PMID: 37930667 PMCID: PMC10629540 DOI: 10.1167/tvst.12.11.10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 10/13/2023] [Indexed: 11/07/2023] Open
Abstract
Purpose This study aimed to evaluate the trans-epithelial permeability enhancement and cell damage caused by a novel riboflavin composition for corneal delivery. Methods We developed a trans-epithelial formulation of riboflavin for corneal delivery using 1,2-dioleoyl-3-dimethylammonium-propane (DODAP) and isostearic acid (ISA). The permeation enhancement was evaluated using an in vitro corneal epithelial cell culture system by measuring the amount of transferred riboflavin with high-performance liquid chromatography. Riboflavin permeation of MedioCROSS TE, a commercially available riboflavin formulation containing benzalkonium chloride, was also evaluated and compared to that of the DODAP/ISA formulation by changing the riboflavin concentration. The trans-epithelial electrical resistance (TEER) was measured after exposure to the samples in an in vitro corneal epithelial cell culture system to assess cytotoxicity. Results The DODAP/ISA formulation demonstrated greater permeation when used together than when each component was used individually. The permeation enhancement effect of the DODAP/ISA formulation was almost the same as that of MedioCROSS TE. However, when a 10-fold higher riboflavin concentration was used in the DODAP/ISA formulation, the permeation enhancement effect surpassed that of MedioCROSS TE. After 24 hours of exposure, the TEER of the DODAP/ISA formulation was higher than that of MedioCROSS TE, indicating that the DODAP/ISA formulation was less cytotoxic than MedioCROSS TE. Conclusions This study indicated that the DODAP/ISA formulation could serve as a less cytotoxic alternative to MedioCROSS TE. Further studies are required to determine the clinical efficacy and safety of the DODAP/ISA formulation in vivo. Translational Relevance This study may provide alternative procedures for corneal collagen crosslinking with less of a cytotoxic effect on corneal epithelial cells.
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Affiliation(s)
- Yutaka Yamagata
- Analytical Research Laboratory, MEDRx Co. Ltd., Kagawa, Japan
| | - Takeshi Ide
- Tokyo Vision Eye Clinic Asagaya, Tokyo, Japan
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12
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Gerardo-Nava JL, Jansen J, Günther D, Klasen L, Thiebes AL, Niessing B, Bergerbit C, Meyer AA, Linkhorst J, Barth M, Akhyari P, Stingl J, Nagel S, Stiehl T, Lampert A, Leube R, Wessling M, Santoro F, Ingebrandt S, Jockenhoevel S, Herrmann A, Fischer H, Wagner W, Schmitt RH, Kiessling F, Kramann R, De Laporte L. Transformative Materials to Create 3D Functional Human Tissue Models In Vitro in a Reproducible Manner. Adv Healthc Mater 2023; 12:e2301030. [PMID: 37311209 DOI: 10.1002/adhm.202301030] [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: 03/31/2023] [Revised: 05/21/2023] [Indexed: 06/15/2023]
Abstract
Recreating human tissues and organs in the petri dish to establish models as tools in biomedical sciences has gained momentum. These models can provide insight into mechanisms of human physiology, disease onset, and progression, and improve drug target validation, as well as the development of new medical therapeutics. Transformative materials play an important role in this evolution, as they can be programmed to direct cell behavior and fate by controlling the activity of bioactive molecules and material properties. Using nature as an inspiration, scientists are creating materials that incorporate specific biological processes observed during human organogenesis and tissue regeneration. This article presents the reader with state-of-the-art developments in the field of in vitro tissue engineering and the challenges related to the design, production, and translation of these transformative materials. Advances regarding (stem) cell sources, expansion, and differentiation, and how novel responsive materials, automated and large-scale fabrication processes, culture conditions, in situ monitoring systems, and computer simulations are required to create functional human tissue models that are relevant and efficient for drug discovery, are described. This paper illustrates how these different technologies need to converge to generate in vitro life-like human tissue models that provide a platform to answer health-based scientific questions.
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Affiliation(s)
- Jose L Gerardo-Nava
- Advanced Materials for Biomedicine (AMB), Institute of Applied Medical Engineering (AME), RWTH Aachen University Hospital, Center for Biohybrid Medical Systems (CMBS), Forckenbeckstraße 55, 52074, Aachen, Germany
- DWI - Leibniz Institute for Interactive Materials, Forckenbeckstraße 50, 52074, Aachen, Germany
| | - Jitske Jansen
- Institute of Experimental Medicine and Systems Biology and Department of Medicine 2, RWTH Aachen University Hospital, Pauwelsstraße 30, 52074, Aachen, Germany
- Department of Internal Medicine, Nephrology and Transplantation, Erasmus Medical Center, Dr. Molewaterplein 40, Rotterdam, 3584CG, The Netherlands
| | - Daniel Günther
- Advanced Materials for Biomedicine (AMB), Institute of Applied Medical Engineering (AME), RWTH Aachen University Hospital, Center for Biohybrid Medical Systems (CMBS), Forckenbeckstraße 55, 52074, Aachen, Germany
- DWI - Leibniz Institute for Interactive Materials, Forckenbeckstraße 50, 52074, Aachen, Germany
- Institute of Technical and Macromolecular Chemistry (ITMC), Advanced Materials for Biomedicine, RWTH Aachen University, Worringerweg 2, 52074, Aachen, Germany
| | - Laura Klasen
- DWI - Leibniz Institute for Interactive Materials, Forckenbeckstraße 50, 52074, Aachen, Germany
- Institute of Technical and Macromolecular Chemistry (ITMC), Advanced Materials for Biomedicine, RWTH Aachen University, Worringerweg 2, 52074, Aachen, Germany
| | - Anja Lena Thiebes
- Department of Biohybrid and Medical Textiles (BioTex), AME - Institute of Applied Medical Engineering, Helmholtz Institute, RWTH Aachen University, Pauwelsstraße 20, 52074, Aachen, Germany
- Aachen-Maastricht Institute for Biobased Materials, Faculty of Science and Engineering, Maastricht University, Brightlands Chemelot Campus, Urmonderbaan 22, 6167 RD, Geleen, The Netherlands
| | - Bastian Niessing
- Fraunhofer Institute for Production Technology IPT, Steinbachstraße 17, 52074, Aachen, Germany
| | - Cédric Bergerbit
- DWI - Leibniz Institute for Interactive Materials, Forckenbeckstraße 50, 52074, Aachen, Germany
| | - Anna A Meyer
- DWI - Leibniz Institute for Interactive Materials, Forckenbeckstraße 50, 52074, Aachen, Germany
- Institute of Technical and Macromolecular Chemistry (ITMC), Advanced Materials for Biomedicine, RWTH Aachen University, Worringerweg 2, 52074, Aachen, Germany
| | - John Linkhorst
- Department of Chemical Process Engineering (AVT.CVT), RWTH Aachen University, Forckenbeckstraße 51, 52074, Aachen, Germany
| | - Mareike Barth
- Department of Cardiac Surgery, RWTH Aachen University Hospital, Pauwelsstraße 30, 52074, Aachen, Germany
| | - Payam Akhyari
- Department of Cardiac Surgery, RWTH Aachen University Hospital, Pauwelsstraße 30, 52074, Aachen, Germany
| | - Julia Stingl
- Institute of Clinical Pharmacology, University Hospital of RWTH, Wendlingweg 2, 52074, Aachen, Germany
| | - Saskia Nagel
- Applied Ethics Group, RWTH Aachen University, Theaterplatz 14, 52062, Aachen, Germany
| | - Thomas Stiehl
- Institute for Computational Biomedicine - Disease Modeling, RWTH Aachen University, Templergraben 55, 52062, Aachen, Germany
| | - Angelika Lampert
- Institute of Neurohysiology, RWTH Aachen University Hospital, Pauwelsstraße 30, 52074, Aachen, Germany
| | - Rudolf Leube
- Institute of Molecular and Cellular Anatomy, RWTH Aachen University, Wendlingweg 2, 52057, Aachen, Germany
| | - Matthias Wessling
- DWI - Leibniz Institute for Interactive Materials, Forckenbeckstraße 50, 52074, Aachen, Germany
- Department of Chemical Process Engineering (AVT.CVT), RWTH Aachen University, Forckenbeckstraße 51, 52074, Aachen, Germany
| | - Francesca Santoro
- Neuroelectronic Interfaces Research Group, RWTH Aachen University, Templergraben 55, 52062, Aachen, Germany
| | - Sven Ingebrandt
- Institute of Materials in Electrical Engineering 1, RWTH Aachen University, Sommerfeldstraße 18, 52074, Aachen, Germany
| | - Stefan Jockenhoevel
- Department of Biohybrid and Medical Textiles (BioTex), AME - Institute of Applied Medical Engineering, Helmholtz Institute, RWTH Aachen University, Pauwelsstraße 20, 52074, Aachen, Germany
- Aachen-Maastricht Institute for Biobased Materials, Faculty of Science and Engineering, Maastricht University, Brightlands Chemelot Campus, Urmonderbaan 22, 6167 RD, Geleen, The Netherlands
| | - Andreas Herrmann
- Advanced Materials for Biomedicine (AMB), Institute of Applied Medical Engineering (AME), RWTH Aachen University Hospital, Center for Biohybrid Medical Systems (CMBS), Forckenbeckstraße 55, 52074, Aachen, Germany
- Institute of Technical and Macromolecular Chemistry (ITMC), Advanced Materials for Biomedicine, RWTH Aachen University, Worringerweg 2, 52074, Aachen, Germany
| | - Horst Fischer
- Department of Dental Materials and Biomaterials Research, RWTH Aachen University Hospital, Pauwelsstraße 30, 52074, Aachen, Germany
| | - Wolfgang Wagner
- Helmholtz-Institute for Biomedical Engineering, RWTH Aachen University, Pauwelsstraße 20, 52074, Aachen, Germany
- Institute for Stem Cell Biology, RWTH Aachen University Hospital, Pauwelsstraße 30, 52074, Aachen, Germany
| | - Robert H Schmitt
- Fraunhofer Institute for Production Technology IPT, Steinbachstraße 17, 52074, Aachen, Germany
- Laboratory for Machine Tools and Production Engineering, RWTH Aachen University, Campus-boulevard 30, 52074, Aachen, Germany
| | - Fabian Kiessling
- Department of Nanomedicine and Theranostics, Institute for Experimental Molecular Imaging, Faculty of Medicine, RWTH Aachen University, Forckenbeckstraße 55, 52074, Aachen, Germany
| | - Rafael Kramann
- Institute of Experimental Medicine and Systems Biology and Department of Medicine 2, RWTH Aachen University Hospital, Pauwelsstraße 30, 52074, Aachen, Germany
- Department of Internal Medicine, Nephrology and Transplantation, Erasmus Medical Center, Dr. Molewaterplein 40, Rotterdam, 3584CG, The Netherlands
| | - Laura De Laporte
- Advanced Materials for Biomedicine (AMB), Institute of Applied Medical Engineering (AME), RWTH Aachen University Hospital, Center for Biohybrid Medical Systems (CMBS), Forckenbeckstraße 55, 52074, Aachen, Germany
- DWI - Leibniz Institute for Interactive Materials, Forckenbeckstraße 50, 52074, Aachen, Germany
- Institute of Technical and Macromolecular Chemistry (ITMC), Advanced Materials for Biomedicine, RWTH Aachen University, Worringerweg 2, 52074, Aachen, Germany
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Bhujel B, Oh SH, Kim CM, Yoon YJ, Kim YJ, Chung HS, Ye EA, Lee H, Kim JY. Mesenchymal Stem Cells and Exosomes: A Novel Therapeutic Approach for Corneal Diseases. Int J Mol Sci 2023; 24:10917. [PMID: 37446091 DOI: 10.3390/ijms241310917] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 06/25/2023] [Accepted: 06/28/2023] [Indexed: 07/15/2023] Open
Abstract
The cornea, with its delicate structure, is vulnerable to damage from physical, chemical, and genetic factors. Corneal transplantation, including penetrating and lamellar keratoplasties, can restore the functions of the cornea in cases of severe damage. However, the process of corneal transplantation presents considerable obstacles, including a shortage of available donors, the risk of severe graft rejection, and potentially life-threatening complications. Over the past few decades, mesenchymal stem cell (MSC) therapy has become a novel alternative approach to corneal regeneration. Numerous studies have demonstrated the potential of MSCs to differentiate into different corneal cell types, such as keratocytes, epithelial cells, and endothelial cells. MSCs are considered a suitable candidate for corneal regeneration because of their promising therapeutic perspective and beneficial properties. MSCs compromise unique immunomodulation, anti-angiogenesis, and anti-inflammatory properties and secrete various growth factors, thus promoting corneal reconstruction. These effects in corneal engineering are mediated by MSCs differentiating into different lineages and paracrine action via exosomes. Early studies have proven the roles of MSC-derived exosomes in corneal regeneration by reducing inflammation, inhibiting neovascularization, and angiogenesis, and by promoting cell proliferation. This review highlights the contribution of MSCs and MSC-derived exosomes, their current usage status to overcome corneal disease, and their potential to restore different corneal layers as novel therapeutic agents. It also discusses feasible future possibilities, applications, challenges, and opportunities for future research in this field.
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Affiliation(s)
- Basanta Bhujel
- Department of Ophthalmology, University of Ulsan College of Medicine, Asan Medical Center, 88, Olympic-Ro, Songpa-Gu, Seoul 05505, Republic of Korea
| | - Se-Heon Oh
- Department of Ophthalmology, University of Ulsan College of Medicine, Asan Medical Center, 88, Olympic-Ro, Songpa-Gu, Seoul 05505, Republic of Korea
| | - Chang-Min Kim
- Department of Ophthalmology, University of Ulsan College of Medicine, Asan Medical Center, 88, Olympic-Ro, Songpa-Gu, Seoul 05505, Republic of Korea
| | - Ye-Ji Yoon
- Department of Ophthalmology, University of Ulsan College of Medicine, Asan Medical Center, 88, Olympic-Ro, Songpa-Gu, Seoul 05505, Republic of Korea
| | - Young-Jae Kim
- Department of Ophthalmology, University of Ulsan College of Medicine, Asan Medical Center, 88, Olympic-Ro, Songpa-Gu, Seoul 05505, Republic of Korea
| | - Ho-Seok Chung
- Department of Ophthalmology, University of Ulsan College of Medicine, Asan Medical Center, 88, Olympic-Ro, Songpa-Gu, Seoul 05505, Republic of Korea
| | - Eun-Ah Ye
- Department of Ophthalmology, University of Ulsan College of Medicine, Asan Medical Center, 88, Olympic-Ro, Songpa-Gu, Seoul 05505, Republic of Korea
| | - Hun Lee
- Department of Ophthalmology, University of Ulsan College of Medicine, Asan Medical Center, 88, Olympic-Ro, Songpa-Gu, Seoul 05505, Republic of Korea
| | - Jae-Yong Kim
- Department of Ophthalmology, University of Ulsan College of Medicine, Asan Medical Center, 88, Olympic-Ro, Songpa-Gu, Seoul 05505, Republic of Korea
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Li Q, Wong HL, Ip YL, Chu WY, Li MS, Saha C, Shih KC, Chan YK. Current microfluidic platforms for reverse engineering of cornea. Mater Today Bio 2023; 20:100634. [PMID: 37139464 PMCID: PMC10149412 DOI: 10.1016/j.mtbio.2023.100634] [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: 12/23/2022] [Revised: 04/04/2023] [Accepted: 04/10/2023] [Indexed: 05/05/2023] Open
Abstract
According to the World Health Organization, corneal blindness constitutes 5.1% of global blindness population. Surgical outcomes have been improved significantly in the treatment of corneal blindness. However, corneal transplantation is limited by global shortage of donor tissue, prompting researchers to explore alternative therapies such as novel ocular pharmaceutics to delay corneal disease progression. Animal models are commonly adopted for investigating pharmacokinetics of ocular drugs. However, this approach is limited by physiological differences in the eye between animals and human, ethical issues and poor bench-to-bedside translatability. Cornea-on-a-chip (CoC) microfluidic platforms have gained great attention as one of the advanced in vitro strategies for constructing physiologically representative corneal models. With significant improvements in tissue engineering technology, CoC integrates corneal cells with microfluidics to recapitulate human corneal microenvironment for the study of corneal pathophysiological changes and evaluation of ocular drugs. Such model, in complement to animal studies, can potentially accelerate translational research, in particular the pre-clinical screening of ophthalmic medication, driving clinical treatment advancement for corneal diseases. This review provides an overview of engineered CoC platforms with respect to their merits, applications, and technical challenges. Emerging directions in CoC technology are also proposed for further investigations, to accentuate preclinical obstacles in corneal research.
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Affiliation(s)
- Qinyu Li
- Department of Ophthalmology, LKS Faculty of Medicine, The University of Hong Kong, 999077, Hong Kong, China
| | - Ho Lam Wong
- Department of Ophthalmology, LKS Faculty of Medicine, The University of Hong Kong, 999077, Hong Kong, China
| | - Yan Lam Ip
- Department of Ophthalmology, LKS Faculty of Medicine, The University of Hong Kong, 999077, Hong Kong, China
| | - Wang Yee Chu
- Department of Ophthalmology, LKS Faculty of Medicine, The University of Hong Kong, 999077, Hong Kong, China
| | - Man Shek Li
- Department of Ophthalmology, LKS Faculty of Medicine, The University of Hong Kong, 999077, Hong Kong, China
| | - Chinmoy Saha
- Department of Ophthalmology, LKS Faculty of Medicine, The University of Hong Kong, 999077, Hong Kong, China
| | - Kendrick Co Shih
- Department of Ophthalmology, LKS Faculty of Medicine, The University of Hong Kong, 999077, Hong Kong, China
| | - Yau Kei Chan
- Department of Ophthalmology, LKS Faculty of Medicine, The University of Hong Kong, 999077, Hong Kong, China
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15
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Wu KY, Ahmad H, Lin G, Carbonneau M, Tran SD. Mesenchymal Stem Cell-Derived Exosomes in Ophthalmology: A Comprehensive Review. Pharmaceutics 2023; 15:1167. [PMID: 37111652 PMCID: PMC10142951 DOI: 10.3390/pharmaceutics15041167] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 03/26/2023] [Accepted: 04/03/2023] [Indexed: 04/29/2023] Open
Abstract
Over the past decade, the field of mesenchymal stem cell (MSC) therapy has exhibited rapid growth. Due to their regenerative, reparatory, and immunomodulatory capacities, MSCs have been widely investigated as therapeutic agents in the cell-based treatment of chronic ophthalmic pathologies. However, the applicability of MSC-based therapy is limited by suboptimal biocompatibility, penetration, and delivery to the target ocular tissues. An emerging body of research has elucidated the role of exosomes in the biological functions of MSCs, and that MSC-derived extracellular vesicles (EVs) possess anti-inflammatory, anti-apoptotic, tissue repairing, neuroprotective, and immunomodulatory properties similar to MSCs. The recent advances in MSCs-derived exosomes can serve as solutions to the challenges faced by MSCs-therapy. Due to their nano-dimensions, MSC-derived exosomes can rapidly penetrate biological barriers and reach immune-privileged organs, allowing for efficient delivery of therapeutic factors such as trophic and immunomodulatory agents to ocular tissues that are typically challenging to target by conventional therapy and MSCs transplantation. In addition, the use of EVs minimizes the risks associated with mesenchymal stem cell transplantation. In this literature review, we focus on the studies published between 2017 and 2022, highlighting the characteristics of EVs derived from MSCs and their biological functions in treating anterior and posterior segment ocular diseases. Additionally, we discuss the potential use of EVs in clinical settings. Rapid advancements in regenerative medicine and exosome-based drug delivery, in conjunction with an increased understanding of ocular pathology and pharmacology, hold great promise for the treatment of ocular diseases. The potential of exosome-based therapies is exciting and can revolutionize the way we approach these ocular conditions.
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Affiliation(s)
- Kevin Y. Wu
- Department of Surgery—Division of Ophthalmology, University of Sherbrooke, Sherbrooke, QC J1G 2E8, Canada
| | - Hamza Ahmad
- Faculty of Medicine, McGill University, Montreal, QC H3A 0G4, Canada
| | - Grace Lin
- Faculty of Medicine, University of Montreal, Montreal, QC H3T 1J4, Canada
| | - Marjorie Carbonneau
- Department of Surgery—Division of Ophthalmology, University of Sherbrooke, Sherbrooke, QC J1G 2E8, Canada
| | - Simon D. Tran
- Faculty of Dental Medicine and Oral Health Sciences, McGill University, Montreal, QC H3A 1G1, Canada
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Yu Z, Hao R, Chen X, Ma L, Zhang Y, Yang H. Protocol to develop a microfluidic human corneal barrier-on-a-chip to evaluate the corneal epithelial wound repair process. STAR Protoc 2023; 4:102122. [PMID: 36861830 PMCID: PMC9984679 DOI: 10.1016/j.xpro.2023.102122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 12/02/2022] [Accepted: 01/31/2023] [Indexed: 02/17/2023] Open
Abstract
Organs-on-chips are microfluidic devices for cell culturing to simulate tissue- or organ-level physiology, providing new solutions other than traditional animal tests. Here, we describe a microfluidic platform consisting of human corneal cells and compartmentalizing channels to achieve fully integrated human cornea's barrier effects on the chip. We detail steps to verify the barrier effects and physiological phenotypes of microengineered human cornea. Then, we use the platform to evaluate the corneal epithelial wound repair process. For complete details on the use and execution of this protocol, please refer to Yu et al. (2022).1.
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Affiliation(s)
- Zitong Yu
- Bionic Sensing and Intelligence Center, Institute of Biomedical and Health Engineering, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Rui Hao
- Bionic Sensing and Intelligence Center, Institute of Biomedical and Health Engineering, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Xi Chen
- Bionic Sensing and Intelligence Center, Institute of Biomedical and Health Engineering, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Lu Ma
- Bionic Sensing and Intelligence Center, Institute of Biomedical and Health Engineering, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Yi Zhang
- Center for Medical AI, Institute of Biomedical and Health Engineering, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Hui Yang
- Bionic Sensing and Intelligence Center, Institute of Biomedical and Health Engineering, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China.
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Wu W, Zhou J, Zhu D, Ma S. Effect of PKH-26-labeled exosomes derived from bone marrow mesenchymal stem cells on corneal epithelium regeneration in diabetic mice. ANNALS OF TRANSLATIONAL MEDICINE 2023; 11:167. [PMID: 36923078 PMCID: PMC10009570 DOI: 10.21037/atm-22-6644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 02/07/2023] [Indexed: 02/24/2023]
Abstract
Background It is known that bone marrow mesenchymal stem cells (BM-MSCs) could speed up the regeneration of diabetic corneal epithelium. To investigate the effect of exosomes derived from mouse BM-MSCs on corneal epithelium regeneration in diabetic mice. Methods Diabetic mouse models were established using streptozotocin (STZ), and their central corneal epithelium was scratched under a microscope. The diabetic mice were randomly divided into three groups: the control group was injected with subconjunctival phosphate buffer saline; the exosomes group was treated with a subconjunctival injection of exosomes derived from BM-MSCs; and the BM-MSCs group was treated with a subconjunctival injection of BM-MSCs. The corneal epithelium repair rates in the three groups were compared, and the distribution of the exosomes derived from BM-MSCs labeled with PKH-26 was observed by immunofluorescence. Hematoxylin-eosin staining of the corneal tissue was observed 72 h after the treatments in the three groups. Results The diabetic mice were successfully established by a blood glucose level >16.7 mmol/L after 8 weeks. The corneal epithelium healing rates in experimental groups 1 and 2 were significantly higher than those of the control group at 24, 48, and 72 h (P<0.05). However, there was no significant difference in the corneal epithelial healing rate between experimental groups 1 and 2 (P>0.05). The exosomes derived from BM-MSCs were found in the superficial corneal stroma in experimental groups 1 and 2, with the majority of the exosomes distributed in the limbal epithelium at the edge of the injury area. The proliferation of corneal epithelial cells in experimental groups 1 and 2 was more obvious than that in the control group. Conclusions The exosomes derived from BM-MSCs labeled with PKH-26 significantly promoted the repair of corneal epithelial injury in diabetic mice. These exosomes might be a substitute for BM-MSCs in the repair of diabetic keratopathy, suggesting a new idea for the repair of diabetic keratopathy with "cell-free" stem cell therapy, which will require a clinical study.
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Affiliation(s)
- Wei Wu
- Department of Ophthalmology, Guangzhou Red Cross Hospital of Jinan University, Guangzhou, China
| | - Jianting Zhou
- Department of Ophthalmology, Guangzhou Red Cross Hospital of Jinan University, Guangzhou, China
| | - Dan Zhu
- Department of Ophthalmology, Daping Hospital, Army Medical Center, Army Medical University, Chongqing, China
| | - Shengsheng Ma
- Department of Ophthalmology, Guangzhou Red Cross Hospital of Jinan University, Guangzhou, China
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Hao R, Hu S, Zhang H, Chen X, Yu Z, Ren J, Guo H, Yang H. Mechanical stimulation on a microfluidic device to highly enhance small extracellular vesicle secretion of mesenchymal stem cells. Mater Today Bio 2023; 18:100527. [PMID: 36619203 PMCID: PMC9816961 DOI: 10.1016/j.mtbio.2022.100527] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Revised: 12/21/2022] [Accepted: 12/22/2022] [Indexed: 12/26/2022] Open
Abstract
Small extracellular vesicles (sEVs) are recognized as promising detection biomarkers and attractive delivery vehicles, showing great potential in diagnosis and treatment of diseases. However, the applications of sEVs are usually restricted by their poor secretion amount from donor cells under routine cell culture conditions, which is especially true for mesenchymal stem cells (MSCs) due to their limited expansion and early senescence. Here, a microfluidic device is proposed for boosting sEV secretion from MSCs derived from human fetal bone marrow (BM-MSCs). As the cells rapidly pass through a microfluidic channel with a series of narrow squeezing ridges, mechanical stimulation permeabilizes the cell membrane, thus promoting them to secrete more sEVs into extracellular space. In this study, the microfluidic device demonstrates that mechanical-squeezing effect could increase the secretion amount of sEVs from the BM-MSCs by approximately 4-fold, while maintaining cellular growth state of the stem cells. Further, the secreted sEVs are efficiently taken up by immortalized human corneal epithelial cells and accelerate corneal epithelial wound healing in vitro, indicating that this technique wound not affect the functionality of sEVs and demonstrating the application potentials of this technique.
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Affiliation(s)
- Rui Hao
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen, 361005, China
| | - Shi Hu
- Laboratory of Biomedical Microsystems and Nano Devices, Center for Bionic Sensing and Intelligence, Institute of Biomedical and Health Engineering, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Huitao Zhang
- Laboratory of Biomedical Microsystems and Nano Devices, Center for Bionic Sensing and Intelligence, Institute of Biomedical and Health Engineering, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Xi Chen
- Laboratory of Biomedical Microsystems and Nano Devices, Center for Bionic Sensing and Intelligence, Institute of Biomedical and Health Engineering, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Zitong Yu
- Laboratory of Biomedical Microsystems and Nano Devices, Center for Bionic Sensing and Intelligence, Institute of Biomedical and Health Engineering, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Jingyi Ren
- Laboratory of Biomedical Microsystems and Nano Devices, Center for Bionic Sensing and Intelligence, Institute of Biomedical and Health Engineering, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Hang Guo
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen, 361005, China
| | - Hui Yang
- Laboratory of Biomedical Microsystems and Nano Devices, Center for Bionic Sensing and Intelligence, Institute of Biomedical and Health Engineering, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
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Feng X, Peng Z, Yuan L, Jin M, Hu H, Peng X, Wang Y, Zhang C, Luo Z, Liao H. Research progress of exosomes in pathogenesis, diagnosis, and treatment of ocular diseases. Front Bioeng Biotechnol 2023; 11:1100310. [PMID: 36761297 PMCID: PMC9902372 DOI: 10.3389/fbioe.2023.1100310] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 01/10/2023] [Indexed: 01/26/2023] Open
Abstract
Exosomes are natural extracellular vesicles with a diameter of 30-150 nm, which exist in biological fluids and contain biomolecules related to the parent cell, such as proteins, nucleic acids, lipids, etc. It has a wide range of biological functions, and participates in the regulation of important physiological and pathological activities of the body. It can be used as a biomarker for early diagnosis of ocular diseases, a potential therapeutic target, a targeted drug carrier, and has a high potential for clinical application. In this paper, we summarized the genesis mechanism, biological functions, research and application progress of exosomes, focused on the engineering strategy of exosomes, and summarized the advantages and disadvantages of common engineering exosome preparation methods. Systematically combed the role of exosomes in corneal diseases, glaucoma, and retinal diseases, to provide a reference for further understanding of the role of exosomes in the pathogenesis, diagnosis, and treatment of ocular diseases. Finally, we further summarized the opportunities and challenges of exosomes for precision medicine. The extension of exosome research to the field of ophthalmology will help advance current diagnostic and therapeutic methods. Tiny exosomes have huge potential.
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Affiliation(s)
- Xinting Feng
- Jiangxi Provincial Key Laboratory for Ophthalmology, Jiangxi Clinical Research Center for Ophthalmic Disease, Affiliated Eye Hospital of Nanchang University, Jiangxi Research Institute of Ophthalmology and Visual Science, Nanchang, China,Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Zhen Peng
- Jiangxi Provincial Key Laboratory for Ophthalmology, Jiangxi Clinical Research Center for Ophthalmic Disease, Affiliated Eye Hospital of Nanchang University, Jiangxi Research Institute of Ophthalmology and Visual Science, Nanchang, China,Department of Sports Medicine, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Lingyi Yuan
- Jiangxi Provincial Key Laboratory for Ophthalmology, Jiangxi Clinical Research Center for Ophthalmic Disease, Affiliated Eye Hospital of Nanchang University, Jiangxi Research Institute of Ophthalmology and Visual Science, Nanchang, China
| | - Ming Jin
- Jiangxi Provincial Key Laboratory for Ophthalmology, Jiangxi Clinical Research Center for Ophthalmic Disease, Affiliated Eye Hospital of Nanchang University, Jiangxi Research Institute of Ophthalmology and Visual Science, Nanchang, China
| | - Haijian Hu
- Jiangxi Provincial Key Laboratory for Ophthalmology, Jiangxi Clinical Research Center for Ophthalmic Disease, Affiliated Eye Hospital of Nanchang University, Jiangxi Research Institute of Ophthalmology and Visual Science, Nanchang, China
| | - Xin Peng
- College of Fine Arts, Jiangxi Science and Technology Normal University, Nanchang, China
| | - Yaohua Wang
- Jiangxi Provincial Key Laboratory for Ophthalmology, Jiangxi Clinical Research Center for Ophthalmic Disease, Affiliated Eye Hospital of Nanchang University, Jiangxi Research Institute of Ophthalmology and Visual Science, Nanchang, China
| | - Chun Zhang
- Department of ophthalmology, West China hospital, Sichuan University, Chengdu, China
| | - Zhiwen Luo
- Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai, China,*Correspondence: Hongfei Liao, ; Zhiwen Luo,
| | - Hongfei Liao
- Jiangxi Provincial Key Laboratory for Ophthalmology, Jiangxi Clinical Research Center for Ophthalmic Disease, Affiliated Eye Hospital of Nanchang University, Jiangxi Research Institute of Ophthalmology and Visual Science, Nanchang, China,*Correspondence: Hongfei Liao, ; Zhiwen Luo,
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20
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Bone Marrow Mesenchymal Stromal/Stem Cell-Derived Extracellular Vesicles Promote Corneal Wound Repair by Regulating Inflammation and Angiogenesis. Cells 2022; 11:cells11233892. [PMID: 36497151 PMCID: PMC9736484 DOI: 10.3390/cells11233892] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 11/22/2022] [Accepted: 11/28/2022] [Indexed: 12/05/2022] Open
Abstract
Severe corneal damage leads to complete vision loss, thereby affecting life quality and impinging heavily on the healthcare system. Current clinical approaches to manage corneal wounds suffer from severe drawbacks, thus requiring the development of alternative strategies. Of late, mesenchymal stromal/stem cell (MSC)-derived extracellular vesicles (EVs) have become a promising tool in the ophthalmic field. In the present study, we topically delivered bone-marrow-derived MSC-EVs (BMSC-EVs), embedded in methylcellulose, in a murine model of alkali-burn-induced corneal damage in order to evaluate their role in corneal repair through histological and molecular analyses, with the support of magnetic resonance imaging. Our data show that BMSC-EVs, used for the first time in this specific formulation on the damaged cornea, modulate cell death, inflammation and angiogenetic programs in the injured tissue, thus leading to a faster recovery of corneal damage. These results were confirmed on cadaveric donor-derived human corneal epithelial cells in vitro. Thus, BMSC-EVs modulate corneal repair dynamics and are promising as a new cell-free approach for intervening on burn wounds, especially in the avascularized region of the eye.
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Liu Y, Zhang C, Kong Y, Liu H, Guo J, Yang H, Deng L. Modification of Collagen Film via Surface Grafting of Taurine Molecular to Promote Corneal Nerve Repair and Epithelization Process. J Funct Biomater 2022; 13:jfb13030098. [PMID: 35893466 PMCID: PMC9326765 DOI: 10.3390/jfb13030098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/15/2022] [Accepted: 07/15/2022] [Indexed: 11/16/2022] Open
Abstract
Corneal defects can seriously affect human vision, and keratoplasty is the most widely accepted therapy method for visual rehabilitation. Currently, effective treatment for clinical patients has been restricted due to a serious shortage of donated cornea tissue and high-quality artificial repair materials. As the predominant component of cornea tissue, collagen-based materials have promising applications for corneal repair. However, the corneal nerve repair and epithelization process after corneal transplantation must be improved. This research proposes a new collagen-based scaffold with good biocompatibility and biological functionality enhanced by surface chemical grafting of natural taurine molecular. The chemical composition of collagen-taurine (Col-Tau) material is evaluated by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy, and its hydrophilic properties, light transmittance, swelling performance and mechanical tensile properties have been measured. The research results indicate that the Col-Tau sample has high transmittance and good mechanical properties, and exhibits excellent capacity to promote corneal nerve cell growth and the epithelization process of corneal epithelial cells. This novel Col-Tau material, which can be easily prepared at a low cost, should have significant application potential for the treating corneal disease in the future.
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Affiliation(s)
- Yang Liu
- Institute of Biomedical Engineering and Health Sciences, Changzhou University, Changzhou 213164, China; (C.Z.); (Y.K.); (H.L.); (J.G.)
- Correspondence: (Y.L.); (H.Y.); (L.D.)
| | - Chuanlei Zhang
- Institute of Biomedical Engineering and Health Sciences, Changzhou University, Changzhou 213164, China; (C.Z.); (Y.K.); (H.L.); (J.G.)
| | - Yanhui Kong
- Institute of Biomedical Engineering and Health Sciences, Changzhou University, Changzhou 213164, China; (C.Z.); (Y.K.); (H.L.); (J.G.)
| | - Huiyu Liu
- Institute of Biomedical Engineering and Health Sciences, Changzhou University, Changzhou 213164, China; (C.Z.); (Y.K.); (H.L.); (J.G.)
| | - Jia Guo
- Institute of Biomedical Engineering and Health Sciences, Changzhou University, Changzhou 213164, China; (C.Z.); (Y.K.); (H.L.); (J.G.)
| | - Hui Yang
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases, Ministry of Education, Gannan Medical University, Ganzhou 341000, China
- Correspondence: (Y.L.); (H.Y.); (L.D.)
| | - Linhong Deng
- Institute of Biomedical Engineering and Health Sciences, Changzhou University, Changzhou 213164, China; (C.Z.); (Y.K.); (H.L.); (J.G.)
- Correspondence: (Y.L.); (H.Y.); (L.D.)
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