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Pfeifer JPH, Stievani FDC, Fernandes CJDC, Rosa GDS, Apolonio EVP, Rossi MC, Zambuzzi WF, Alves ALG. Influence of inflammation on the expression of microRNA-140 in extracellular vesicles from 2D and 3D culture models of synovial-membrane-derived stem cells. Front Bioeng Biotechnol 2024; 12:1416694. [PMID: 39170063 PMCID: PMC11335645 DOI: 10.3389/fbioe.2024.1416694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Accepted: 07/17/2024] [Indexed: 08/23/2024] Open
Abstract
Background In osteoarthritis (OA), articular homeostasis is regulated by microRNA-140 that inhibits ADAMTS-5, an enzyme that cleaves aggrecan and stimulates the synthesis of other inflammatory mediators. This study aims to evaluate the expression of microRNA-140 in extracellular vesicles (EVs) derived from equine synovial-membrane-derived mesenchymal stem cells (eqSMMSCs) cultured in monolayer (2D) and three-dimensional (3D) culture models under an in vitro inflammatory environment. Methods Four experimental groups of eqSMMSC cultures were defined for isolation of the EVs. The 2D and 3D control groups were cultured in a conventional cell culture medium, while the 2D-OA and 3D-OA treatment groups were exposed to an OA-like medium containing IL-1β and TNFα. The culture media samples were collected at 24 h, 72 h, and 120 h time points for EV isolation and characterization using nanoparticle tracking analysis (NTA) and transmission electron microscopy (TEM). Reverse transcription quantitative polymerase chain reaction was employed to assess the expressions of microRNA-140 in both the cells and EVs. All statistical analyses were conducted at the 5% significance level. Results Encapsulation of the eqSMMSCs protected the cells from the inflammatory media compared to the monolayer cultures. EVs were found in higher concentrations in the 3D-OA cultures. Additionally, higher expressions of microRNA-140 were observed in the cells of the 3D-OA group at 24 and 72 h, whereas microRNA-140 expressions in the EVs were higher in the 3D group at 72 h and in the 2D-OA group at 120 h (p < 0.001). However, the 3D-OA culture showed higher expression of the mRNA Adamts5 in the EVs at 120 h. Conclusion The responses of the eqSMMSCs to inflammatory stimuli involve intracellular expression of microRNA-140 and its subsequent transportation via the EVs, with quicker responses observed in the 3D than 2D cultures. This study sheds light on the behaviors of stem cells in restoring homeostasis in osteoarthritic joints.
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Affiliation(s)
- João Pedro Hübbe Pfeifer
- Regenerative Medicine Lab, Veterinary Surgery and Animal Reproduction Department, School of Veterinary Medicine and Animal Science, São Paulo State University - UNESP, Botucatu, Brazil
| | - Fernanda de Castro Stievani
- Regenerative Medicine Lab, Veterinary Surgery and Animal Reproduction Department, School of Veterinary Medicine and Animal Science, São Paulo State University - UNESP, Botucatu, Brazil
| | - Célio J. da Costa Fernandes
- Biophysics and Pharmacology Department, Institute of Biosciences, São Paulo State University - UNESP, Botucatu, Brazil
| | - Gustavo dos Santos Rosa
- Regenerative Medicine Lab, Veterinary Surgery and Animal Reproduction Department, School of Veterinary Medicine and Animal Science, São Paulo State University - UNESP, Botucatu, Brazil
| | - Emanuel Vitor Pereira Apolonio
- Regenerative Medicine Lab, Veterinary Surgery and Animal Reproduction Department, School of Veterinary Medicine and Animal Science, São Paulo State University - UNESP, Botucatu, Brazil
| | - Mariana Correa Rossi
- Regenerative Medicine Lab, Veterinary Surgery and Animal Reproduction Department, School of Veterinary Medicine and Animal Science, São Paulo State University - UNESP, Botucatu, Brazil
| | - Willian Fernando Zambuzzi
- Laboratory of Bioassays and Cellular Dynamics, Department of Chemical and Biological Sciences, Institute of Biosciences, São Paulo State University - UNESP, Botucatu, Brazil
| | - Ana Liz Garcia Alves
- Regenerative Medicine Lab, Veterinary Surgery and Animal Reproduction Department, School of Veterinary Medicine and Animal Science, São Paulo State University - UNESP, Botucatu, Brazil
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Liu C, Zhang L, Zheng X, Zhu J, Jin L, Gao R. Pleiotrophin inhibited chondrogenic differentiation potential of dental pulp stem cells. Oral Dis 2024; 30:1439-1450. [PMID: 36840423 DOI: 10.1111/odi.14554] [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: 07/29/2022] [Revised: 02/13/2023] [Accepted: 02/22/2023] [Indexed: 02/26/2023]
Abstract
OBJECTIVE Studies have shown that the levels of pleiotrophin (PTN) are greatly elevated in the synovial fluid and cartilage in osteoarthritis. Therefore, the purpose of this study was to investigate the effect and mechanism of PTN on the chondrogenic differentiation of DPSCs in inflammatory and normal microenvironments. MATERIALS AND METHODS A lentiviral vector was used to deplete or overexpress PTN in DPSCs. The inflammatory microenvironment was simulated in vitro by the addition of IL-1β to the culture medium. The chondrogenic differentiation potential was assessed using Alcian Blue staining and the main chondrogenic markers. A dual-luciferase reporter assay was used to explore the relationship between miR-137 and PTN. RESULTS The results showed that 0.1 ng/mL IL-1β treatment during chondrogenic induction greatly impaired the chondrogenic differentiation of DPSCs. Supplementation with PTN and PTN overexpression inhibited chondrogenic differentiation of DPSCs, while PTN depletion promoted chondrogenic differentiation. MiR-137 negatively regulated the expression of PTN by binding to the 3'UTR of its mRNA. Moreover, miR-137 promoted chondrogenic differentiation of DPSCs in normal and inflammatory microenvironments. CONCLUSION Our results suggest that PTN may play an inhibitory role in the chondrogenic differentiation of DPSCs in normal and inflammatory microenvironments, which is regulated by miR-137.
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Affiliation(s)
- Chang Liu
- Department of Stomatology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Lili Zhang
- Department of General Dentistry and Integrated Emergency Dental Care, Beijing Stomatological Hospital, Capital Medical University, Beijing, China
| | - Xiaoyu Zheng
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing, China
| | - Jiaman Zhu
- Department of Stomatology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Luyuan Jin
- Department of General Dentistry and Integrated Emergency Dental Care, Beijing Stomatological Hospital, Capital Medical University, Beijing, China
| | - Runtao Gao
- Department of Stomatology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
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Majumder N, Roy S, Sharma A, Arora S, Vaishya R, Bandyopadhyay A, Ghosh S. Assessing the advantages of 3D bioprinting and 3D spheroids in deciphering the osteoarthritis healing mechanism using human chondrocytes and polarized macrophages. Biomed Mater 2024; 19:025005. [PMID: 38198731 DOI: 10.1088/1748-605x/ad1d18] [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: 07/03/2023] [Accepted: 01/10/2024] [Indexed: 01/12/2024]
Abstract
The molecular niche of an osteoarthritic microenvironment comprises the native chondrocytes, the circulatory immune cells, and their respective inflammatory mediators. Although M2 macrophages infiltrate the joint tissue during osteoarthritis (OA) to initiate cartilage repair, the mechanistic crosstalk that dwells underneath is still unknown. Our study established a co-culture system of human OA chondrocytes and M2 macrophages in 3D spheroids and 3D bioprinted silk-gelatin constructs. It is already well established that Silk fibroin-gelatin bioink supports chondrogenic differentiation due to upregulation of the Wnt/β-catenin pathway. Additionally, the presence of anti-inflammatory M2 macrophages significantly upregulated the expression of chondrogenic biomarkers (COL-II, ACAN) with an attenuated expression of the chondrocyte hypertrophy (COL-X), chondrocyte dedifferentiation (COL-I) and matrix catabolism (MMP-1 and MMP-13) genes even in the absence of the interleukins. Furthermore, the 3D bioprinted co-culture model displayed an upper hand in stimulating cartilage regeneration and OA inhibition than the spheroid model, underlining the role of silk fibroin-gelatin in encouraging chondrogenesis. Additionally, the 3D bioprinted silk-gelatin constructs further supported the maintenance of stable anti-inflammatory phenotype of M2 macrophage. Thus, the direct interaction between the primary OAC and M2 macrophages in the 3D context, along with the release of the soluble anti-inflammatory factors by the M2 cells, significantly contributed to a better understanding of the molecular mechanisms responsible for immune cell-mediated OA healing.
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Affiliation(s)
- Nilotpal Majumder
- Regenerative Engineering Laboratory, Department of Textile and Fiber Engineering, Indian Institute of Technology, New Delhi 110016, India
| | - Subhadeep Roy
- Regenerative Engineering Laboratory, Department of Textile and Fiber Engineering, Indian Institute of Technology, New Delhi 110016, India
| | - Aarushi Sharma
- Regenerative Engineering Laboratory, Department of Textile and Fiber Engineering, Indian Institute of Technology, New Delhi 110016, India
| | - Shuchi Arora
- Department of Biological Sciences & Bioengineering, Indian Institute of Technology, Kanpur 208016, India
| | - Raju Vaishya
- Indraprastha Apollo Hospitals Delhi, New Delhi 110076, India
| | - Amitabha Bandyopadhyay
- Department of Biological Sciences & Bioengineering, Indian Institute of Technology, Kanpur 208016, India
| | - Sourabh Ghosh
- Regenerative Engineering Laboratory, Department of Textile and Fiber Engineering, Indian Institute of Technology, New Delhi 110016, India
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Ejma-Multański A, Wajda A, Paradowska-Gorycka A. Cell Cultures as a Versatile Tool in the Research and Treatment of Autoimmune Connective Tissue Diseases. Cells 2023; 12:2489. [PMID: 37887333 PMCID: PMC10605903 DOI: 10.3390/cells12202489] [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: 08/18/2023] [Revised: 10/17/2023] [Accepted: 10/18/2023] [Indexed: 10/28/2023] Open
Abstract
Cell cultures are an important part of the research and treatment of autoimmune connective tissue diseases. By culturing the various cell types involved in ACTDs, researchers are able to broaden the knowledge about these diseases that, in the near future, may lead to finding cures. Fibroblast cultures and chondrocyte cultures allow scientists to study the behavior, physiology and intracellular interactions of these cells. This helps in understanding the underlying mechanisms of ACTDs, including inflammation, immune dysregulation and tissue damage. Through the analysis of gene expression patterns, surface proteins and cytokine profiles in peripheral blood mononuclear cell cultures and endothelial cell cultures researchers can identify potential biomarkers that can help in diagnosing, monitoring disease activity and predicting patient's response to treatment. Moreover, cell culturing of mesenchymal stem cells and skin modelling in ACTD research and treatment help to evaluate the effects of potential drugs or therapeutics on specific cell types relevant to the disease. Culturing cells in 3D allows us to assess safety, efficacy and the mechanisms of action, thereby aiding in the screening of potential drug candidates and the development of novel therapies. Nowadays, personalized medicine is increasingly mentioned as a future way of dealing with complex diseases such as ACTD. By culturing cells from individual patients and studying patient-specific cells, researchers can gain insights into the unique characteristics of the patient's disease, identify personalized treatment targets, and develop tailored therapeutic strategies for better outcomes. Cell culturing can help in the evaluation of the effects of these therapies on patient-specific cell populations, as well as in predicting overall treatment response. By analyzing changes in response or behavior of patient-derived cells to a treatment, researchers can assess the response effectiveness to specific therapies, thus enabling more informed treatment decisions. This literature review was created as a form of guidance for researchers and clinicians, and it was written with the use of the NCBI database.
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Affiliation(s)
- Adam Ejma-Multański
- Department of Molecular Biology, National Institute of Geriatrics, Rheumatology and Rehabilitation, 02-637 Warsaw, Poland; (A.W.); (A.P.-G.)
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Johnson PA, Ackerman JE, Kurowska-Stolarska M, Coles M, Buckley CD, Dakin SG. Three-dimensional, in-vitro approaches for modelling soft-tissue joint diseases. THE LANCET. RHEUMATOLOGY 2023; 5:e553-e563. [PMID: 38251499 DOI: 10.1016/s2665-9913(23)00190-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 07/05/2023] [Accepted: 07/06/2023] [Indexed: 01/23/2024]
Abstract
Diseases affecting the soft tissues of the joint represent a considerable global health burden, causing pain and disability and increasing the likelihood of developing metabolic comorbidities. Current approaches to investigating the cellular basis of joint diseases, including osteoarthritis, rheumatoid arthritis, tendinopathy, and arthrofibrosis, involve well phenotyped human tissues, animal disease models, and in-vitro tissue culture models. Inherent challenges in preclinical drug discovery have driven the development of state-of-the-art, in-vitro human tissue models to rapidly advance therapeutic target discovery. The clinical potential of such models has been substantiated through successful recapitulation of the pathobiology of cancers, generating accurate predictions of patient responses to therapeutics and providing a basis for equivalent musculoskeletal models. In this Review, we discuss the requirement to develop physiologically relevant three-dimensional (3D) culture systems that could advance understanding of the cellular and molecular basis of diseases that affect the soft tissues of the joint. We discuss the practicalities and challenges associated with modelling the complex extracellular matrix of joint tissues-including cartilage, synovium, tendon, and ligament-highlighting the importance of considering the joint as a whole organ to encompass crosstalk across tissues and between diverse cell types. The design of bespoke in-vitro models for soft-tissue joint diseases has the potential to inform functional studies of the cellular and molecular mechanisms underlying disease onset, progression, and resolution. Use of these models could inform precision therapeutic targeting and advance the field towards personalised medicine for patients with common musculoskeletal diseases.
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Affiliation(s)
- Peter A Johnson
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| | - Jessica E Ackerman
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| | | | - Mark Coles
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| | - Christopher D Buckley
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| | - Stephanie G Dakin
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK.
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Li M, Tian F, Guo J, Li X, Ma L, Jiang M, Zhao J. Therapeutic potential of Coptis chinensis for arthritis with underlying mechanisms. Front Pharmacol 2023; 14:1243820. [PMID: 37637408 PMCID: PMC10450980 DOI: 10.3389/fphar.2023.1243820] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 08/01/2023] [Indexed: 08/29/2023] Open
Abstract
Arthritis is a common degenerative disease of joints, which has become a public health problem affecting human health, but its pathogenesis is complex and cannot be eradicated. Coptis chinensis (CC) has a variety of active ingredients, is a natural antibacterial and anti-inflammatory drug. In which, berberine is its main effective ingredient, and has good therapeutic effects on rheumatoid arthritis (RA), osteoarthritis (OA), gouty arthritis (GA). RA, OA and GA are the three most common types of arthritis, but the relevant pathogenesis is not clear. Therefore, molecular mechanism and prevention and treatment of arthritis are the key issues to be paid attention to in clinical practice. In general, berberine, palmatine, coptisine, jatrorrhizine, magnoflorine and jatrorrhizine hydrochloride in CC play the role in treating arthritis by regulating Wnt1/β-catenin and PI3K/AKT/mTOR signaling pathways. In this review, active ingredients, targets and mechanism of CC in the treatment of arthritis were expounded, and we have further explained the potential role of AHR, CAV1, CRP, CXCL2, IRF1, SPP1, and IL-17 signaling pathway in the treatment of arthritis, and to provide a new idea for the clinical treatment of arthritis by CC.
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Affiliation(s)
- Mengyuan Li
- Haihe Laboratory of Modern Chinese Medicine, Tianjin, China
| | - Fei Tian
- Haihe Laboratory of Modern Chinese Medicine, Tianjin, China
- National Key Laboratory of Chinese Medicine Modernization, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Jinling Guo
- Haihe Laboratory of Modern Chinese Medicine, Tianjin, China
| | - Xiankuan Li
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Lin Ma
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Miaomiao Jiang
- Haihe Laboratory of Modern Chinese Medicine, Tianjin, China
- National Key Laboratory of Chinese Medicine Modernization, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Jing Zhao
- Haihe Laboratory of Modern Chinese Medicine, Tianjin, China
- Department of Geriatric, Fourth Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
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7
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Manivong S, Cullier A, Audigié F, Banquy X, Moldovan F, Demoor M, Roullin VG. New trends for osteoarthritis: Biomaterials, models and modeling. Drug Discov Today 2023; 28:103488. [PMID: 36623796 DOI: 10.1016/j.drudis.2023.103488] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 12/26/2022] [Accepted: 01/03/2023] [Indexed: 01/08/2023]
Abstract
The burden of osteoarthritis (OA), one of the major causes of functional disabilities in humans and animals, continues to increase worldwide while no disease-modifying OA drugs (DMOADs) that either slow down or reverse disease progression have been made available. Here, we provide a brief overview of recent advances in: designing new OA drug delivery approaches, focusing on lubrication-based biomaterials and drug delivery systems, such as hydrogels, liposomes, dendrimers, micro- and nanoparticles; using either large (horse) or small (zebrafish) relevant animal models to evaluate new therapeutic strategies; and OA in vitro modeling, focusing on 3D (organoid) models of cartilage regarding the Replace, Reduce and Refine (3R) principle of animal experimentation.
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Affiliation(s)
- Seng Manivong
- Faculty of Pharmacy, Faculty of Dentistry, and CHU Sainte-Justine Research Centre, Université de Montréal, Montréal, QC, Canada
| | | | - Fabrice Audigié
- Center of Imaging and Research in Locomotor Affections on Equines, Veterinary School of Alfort, Goustranville, France
| | - Xavier Banquy
- Faculty of Pharmacy, Faculty of Dentistry, and CHU Sainte-Justine Research Centre, Université de Montréal, Montréal, QC, Canada
| | - Florina Moldovan
- Faculty of Pharmacy, Faculty of Dentistry, and CHU Sainte-Justine Research Centre, Université de Montréal, Montréal, QC, Canada
| | - Magali Demoor
- Normandie University, UNICAEN, BIOTARGEN, Caen, France.
| | - V Gaëlle Roullin
- Faculty of Pharmacy, Faculty of Dentistry, and CHU Sainte-Justine Research Centre, Université de Montréal, Montréal, QC, Canada.
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8
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Ong LJY, Fan X, Rujia Sun A, Mei L, Toh YC, Prasadam I. Controlling Microenvironments with Organs-on-Chips for Osteoarthritis Modelling. Cells 2023; 12:cells12040579. [PMID: 36831245 PMCID: PMC9954502 DOI: 10.3390/cells12040579] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 02/06/2023] [Accepted: 02/09/2023] [Indexed: 02/16/2023] Open
Abstract
Osteoarthritis (OA) remains a prevalent disease affecting more than 20% of the global population, resulting in morbidity and lower quality of life for patients. The study of OA pathophysiology remains predominantly in animal models due to the complexities of mimicking the physiological environment surrounding the joint tissue. Recent development in microfluidic organ-on-chip (OoC) systems have demonstrated various techniques to mimic and modulate tissue physiological environments. Adaptations of these techniques have demonstrated success in capturing a joint tissue's tissue physiology for studying the mechanism of OA. Adapting these techniques and strategies can help create human-specific in vitro models that recapitulate the cellular processes involved in OA. This review aims to comprehensively summarise various demonstrations of microfluidic platforms in mimicking joint microenvironments for future platform design iterations.
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Affiliation(s)
- Louis Jun Ye Ong
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane City, QLD 4000, Australia
- Center for Biomedical Technologies, Queensland University of Technology, Kelvin Grove, QLD 4059, Australia
- Max Planck Queensland Centre (MPQC) for the Materials Science of Extracellular Matrices, Queensland University of Technology, Brisbane City, QLD 4000, Australia
- Correspondence: (L.J.Y.O.); (I.P.)
| | - Xiwei Fan
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane City, QLD 4000, Australia
- Center for Biomedical Technologies, Queensland University of Technology, Kelvin Grove, QLD 4059, Australia
| | - Antonia Rujia Sun
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane City, QLD 4000, Australia
- Center for Biomedical Technologies, Queensland University of Technology, Kelvin Grove, QLD 4059, Australia
| | - Lin Mei
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane City, QLD 4000, Australia
- Center for Biomedical Technologies, Queensland University of Technology, Kelvin Grove, QLD 4059, Australia
| | - Yi-Chin Toh
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane City, QLD 4000, Australia
- Center for Biomedical Technologies, Queensland University of Technology, Kelvin Grove, QLD 4059, Australia
- Max Planck Queensland Centre (MPQC) for the Materials Science of Extracellular Matrices, Queensland University of Technology, Brisbane City, QLD 4000, Australia
- Centre for Microbiome Research, Queensland University of Technology, Brisbane City, QLD 4000, Australia
| | - Indira Prasadam
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane City, QLD 4000, Australia
- Center for Biomedical Technologies, Queensland University of Technology, Kelvin Grove, QLD 4059, Australia
- Correspondence: (L.J.Y.O.); (I.P.)
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9
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Dou H, Wang S, Hu J, Song J, Zhang C, Wang J, Xiao L. Osteoarthritis models: From animals to tissue engineering. J Tissue Eng 2023; 14:20417314231172584. [PMID: 37223125 PMCID: PMC10201005 DOI: 10.1177/20417314231172584] [Citation(s) in RCA: 6] [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: 02/13/2023] [Accepted: 04/13/2023] [Indexed: 05/25/2023] Open
Abstract
Osteoarthritis (OA) is a chronic degenerative osteoarthropathy. Although it has been revealed that a variety of factors can cause or aggravate the symptoms of OA, the pathogenic mechanisms of OA remain unknown. Reliable OA models that accurately reflect human OA disease are crucial for studies on the pathogenic mechanism of OA and therapeutic drug evaluation. This review first demonstrated the importance of OA models by briefly introducing the OA pathological features and the current limitations in the pathogenesis and treatment of OA. Then, it mainly discusses the development of different OA models, including animal and engineered models, highlighting their advantages and disadvantages from the perspective of pathogenesis and pathology analysis. In particular, the state-of-the-art engineered models and their potential were emphasized, as they may represent the future direction in the development of OA models. Finally, the challenges in obtaining reliable OA models are also discussed, and possible future directions are outlined to shed some light on this area.
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Affiliation(s)
- Hongyuan Dou
- School of Biomedical Engineering, Shenzhen Campus, Sun Yat-Sen University, Shenzhen, China
| | - Shuhan Wang
- Shenzhen Institute for Drug Control, Shenzhen Testing Center of Medical Devices, Shenzhen, China
| | - Jiawei Hu
- School of Biomedical Engineering, Shenzhen Campus, Sun Yat-Sen University, Shenzhen, China
| | - Jian Song
- School of Biomedical Engineering, Shenzhen Campus, Sun Yat-Sen University, Shenzhen, China
| | - Chao Zhang
- School of Biomedical Engineering, Shenzhen Campus, Sun Yat-Sen University, Shenzhen, China
| | - Jiali Wang
- School of Biomedical Engineering, Shenzhen Campus, Sun Yat-Sen University, Shenzhen, China
| | - Lin Xiao
- School of Biomedical Engineering, Shenzhen Campus, Sun Yat-Sen University, Shenzhen, China
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10
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Kowalski MA, Fernandes LM, Hammond KE, Labib S, Drissi H, Patel JM. Cartilage-penetrating hyaluronic acid hydrogel preserves tissue content and reduces chondrocyte catabolism. J Tissue Eng Regen Med 2022; 16:1138-1148. [PMID: 36178309 DOI: 10.1002/term.3352] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 09/07/2022] [Accepted: 09/09/2022] [Indexed: 01/05/2023]
Abstract
Articular cartilage injuries have a limited healing capacity and, due to inflammatory and catabolic activities, often experience progressive degeneration towards osteoarthritis. Current repair techniques generally provide short-term symptomatic relief; however, the regeneration of hyaline cartilage remains elusive, leaving both the repair tissue and surrounding healthy tissue susceptible to long-term wear. Therefore, methods to preserve cartilage following injury, especially from matrix loss and catabolism, are needed to delay, or even prevent, the deteriorative process. The goal of this study was to develop and evaluate a cartilage-penetrating hyaluronic-acid (HA) hydrogel to improve damaged cartilage biomechanics and prevent tissue degeneration. At time zero, the HA-based hydrogel provided a 46.5% increase in compressive modulus and a decrease in permeability after simulated degeneration of explants (collagenase application). Next, in a degenerative culture model (interleukin-1β [IL-1β] for 2 weeks), hydrogel application prior to or midway through the culture mitigated detrimental changes to compressive modulus and permeability observed in non-treated explants. Furthermore, localized loss of proteoglycan was observed in degenerative culture conditions alone (non-treated), but hydrogel administration significantly improved the retention of matrix elements. Finally, NITEGE staining and gene expression analysis showed the ability of the HA gel to decrease chondrocyte catabolic activity. These results highlight the importance of reinforcing damaged cartilage with a biomaterial system to both preserve tissue content and reduce catabolism associated with injury and inflammation.
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Affiliation(s)
- Michael A Kowalski
- Department of Veterans Affairs, Atlanta VA Medical Center, Decatur, Georgia, USA
- Department of Orthopaedics, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Lorenzo M Fernandes
- Department of Veterans Affairs, Atlanta VA Medical Center, Decatur, Georgia, USA
- Department of Orthopaedics, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Kyle E Hammond
- Department of Orthopaedics, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Sameh Labib
- Department of Orthopaedics, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Hicham Drissi
- Department of Veterans Affairs, Atlanta VA Medical Center, Decatur, Georgia, USA
- Department of Orthopaedics, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Jay M Patel
- Department of Veterans Affairs, Atlanta VA Medical Center, Decatur, Georgia, USA
- Department of Orthopaedics, Emory University School of Medicine, Atlanta, Georgia, USA
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11
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Singh YP, Moses JC, Bandyopadhyay A, Mandal BB. 3D Bioprinted Silk-Based In Vitro Osteochondral Model for Osteoarthritis Therapeutics. Adv Healthc Mater 2022; 11:e2200209. [PMID: 35670084 DOI: 10.1002/adhm.202200209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 05/17/2022] [Indexed: 01/28/2023]
Abstract
3D bioprinting of osteochondral tissue offers unique opportunities for enabling precise pharmacological interventions in osteoarthritis (OA). The current study investigates the screening potential of anti-inflammatory drugs using bioprinted inflamed human osteochondral units. The biomimetic hierarchical geometry is bioprinted using silk-based bioinks encapsulating pre-differentiated stem cells, creating an in vitro model. Inflammation is stimulated in the model, using tumor necrosis factor-alpha and Interleukin-1 beta pro-inflammatory cytokines. The resultant degeneration, akin to OA, is flagged by key markers like sulfated glycosaminoglycan, collagen, alkaline phosphatase, and downregulation of osteochondral transcript levels. In the next step, the screening of anti-inflammatory drugs is validated using celecoxib and rhein. Consequently, in the inflamed constructs, the initial upregulation of the key inflammatory mediators (nitric oxide, Prostaglandin E2), is subsequently downregulated, post-drug treatment. In addition, catabolic markers (matrix metalloproteinases and aggrecanase-1), indicative of hypertrophic and apoptosing chondrocytes, are significantly downregulated in the treatment groups; while the transcript and protein levels required for osteochondral health are attenuated. Therefore, the in vitro model mimicks the inflammation in the early stages of OA, and corroborates a potential high-throughput platform for screening novel anti-inflammatory drugs in OA therapeutics.
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Affiliation(s)
- Yogendra Pratap Singh
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
| | - Joseph Christakiran Moses
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
| | - Ashutosh Bandyopadhyay
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
| | - Biman B Mandal
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India.,Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India.,School of Health Sciences and Technology, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
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12
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Badillo-Mata JA, Camacho-Villegas TA, Lugo-Fabres PH. 3D Cell Culture as Tools to Characterize Rheumatoid Arthritis Signaling and Development of New Treatments. Cells 2022; 11:3410. [PMID: 36359806 PMCID: PMC9656230 DOI: 10.3390/cells11213410] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/18/2022] [Accepted: 10/26/2022] [Indexed: 08/08/2023] Open
Abstract
Rheumatoid arthritis (RA) is one of the most common autoimmune disorders affecting 0.5-1% of the population worldwide. As a disease of multifactorial etiology, its constant study has made it possible to unravel the pathophysiological processes that cause the illness. However, efficient and validated disease models are necessary to continue the search for new disease-modulating drugs. Technologies, such as 3D cell culture and organ-on-a-chip, have contributed to accelerating the prospecting of new therapeutic molecules and even helping to elucidate hitherto unknown aspects of the pathogenesis of multiple diseases. These technologies, where medicine and biotechnology converge, can be applied to understand RA. This review discusses the critical elements of RA pathophysiology and current treatment strategies. Next, we discuss 3D cell culture and apply these methodologies for rheumatological diseases and selected models for RA. Finally, we summarize the application of 3D cell culture for RA treatment.
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Affiliation(s)
- Jessica Andrea Badillo-Mata
- Unidad de Biotecnología Médica y Farmacéutica, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco (CIATEJ), A.C. Av. Normalistas 800, Colinas de la Normal, Guadalajara 44270, Jalisco, Mexico
| | - Tanya Amanda Camacho-Villegas
- CONACYT-Unidad de Biotecnología Médica y Farmacéutica, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco (CIATEJ), A.C. Av. Normalistas 800, Colinas de la Normal, Guadalajara 44270, Jalisco, Mexico
| | - Pavel Hayl Lugo-Fabres
- CONACYT-Unidad de Biotecnología Médica y Farmacéutica, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco (CIATEJ), A.C. Av. Normalistas 800, Colinas de la Normal, Guadalajara 44270, Jalisco, Mexico
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13
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Wodzanowski KA, Caplan JL, Kloxin AM, Grimes CL. Multiscale Invasion Assay for Probing Macrophage Response to Gram-Negative Bacteria. Front Chem 2022; 10:842602. [PMID: 35242744 PMCID: PMC8886205 DOI: 10.3389/fchem.2022.842602] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 01/27/2022] [Indexed: 01/21/2023] Open
Abstract
The immune system is a complex network of various cellular components that must differentiate between pathogenic bacteria and the commensal bacteria of the human microbiome, where misrecognition is linked to inflammatory disorders. Fragments of bacterial cell wall peptidoglycan bind to pattern recognition receptors within macrophages, leading to immune activation. To study this complex process, a methodology to remodel and label the bacterial cell wall of two different species of bacteria was established using copper (I) catalyzed azide-alkyne cycloaddition (CuAAC) and strain-promoted azide-alkyne cycloaddition (SPAAC). Additionally, an approach for three-dimensional (3D) culture of human macrophages and their invasion with relevant bacteria in a well-defined hydrogel-based synthetic matrix inspired by the microenvironment of the gut was established. Workflows were developed for human monocyte encapsulation and differentiation into macrophages in 3D culture with high viability. Bacteria invaded into macrophages permitted in situ peptidoglycan labeling. Macrophages exhibited biologically-relevant cytokine release in response to bacteria. This molecularly engineered, multi-dimensional bacteria-macrophage co-culture system will prove useful in future studies to observe immunostimulatory, bacterial fragment production and localization in the cell at the carbohydrate level for insights into how the immune system properly senses bacteria.
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Affiliation(s)
| | - Jeffrey L. Caplan
- Department of Biological Sciences, University of Delaware, Newark, DE, United States
- Bioimaging Center, Delaware Biotechnology Institute, Newark, DE, United States
| | - April M. Kloxin
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE, United States
- Department of Materials Science and Engineering, University of Delaware, Newark, DE, United States
| | - Catherine L. Grimes
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE, United States
- Department of Biological Sciences, University of Delaware, Newark, DE, United States
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14
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Grande D, Goldstein T, Turek TJ, Hennessy S, Walgenbach AW, Do LHD, Greene D, Stone KR. Osteochondral Autograft Plugs versus Paste Graft: Ex Vivo Morselization Increases Chondral Matrix Production. Cartilage 2021; 13:1058S-1065S. [PMID: 32396463 PMCID: PMC8808900 DOI: 10.1177/1947603520916552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVE Patients undergoing articular cartilage paste grafting have been shown in studies to have significant improvement in pain and function in long-term follow-ups. We hypothesized that ex vivo impacting of osteochondral autografts results in higher chondrocyte matrix production versus intact osteochondral autograft plugs. DESIGN This institutional review board-approved study characterizes the effects of impacting osteochondral plugs harvested from the intercondylar notch of 16 patients into a paste, leaving one graft intact as a control. Cell viability/proliferation, collagen type I/II, SOX-9, and aggrecan gene expression via qRT-PCR (quantitative reverse transcription-polymerase chain reaction) were analyzed at 24 and 48 hours. Matrix production and cell morphology were evaluated using histology. RESULTS Paste samples from patients (mean age 39.7) with moderate (19%) to severe (81%) cartilage lesions displayed 34% and 80% greater cell proliferation compared to plugs at 24 and 48 hours post processing, respectively (P = 0.015 and P = 0.021). qRT-PCR analysis yielded a significant (P = 0.000) increase of aggrecan, SOX-9, collagen type I and II at both 24 and 48 hours. Histological examination displayed cell division throughout paste samples, with accumulation of aggrecan around multiple chondrocyte lacunae. CONCLUSIONS Paste graft preparation resulted in increased mobility of chondrocytes by matrix disruption without loss of cell viability. The impaction procedure stimulated chondrocyte proliferation resulting in a cellular response to reestablish native extracellular matrix. Analysis of gene expression supports a regenerative process of cartilage tissue formation and contradicts long-held beliefs that impaction trauma leads to immediate cell death. This mechanism of action translates into clinical benefit for patients with moderate to severe cartilage damage.
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Affiliation(s)
- Daniel Grande
- Feinstein Institute for Medical
Research, Manhasset, NY, USA
| | - Todd Goldstein
- Feinstein Institute for Medical
Research, Manhasset, NY, USA
| | | | | | | | | | - David Greene
- Stone Research Foundation, San
Francisco, CA, USA
| | - Kevin R. Stone
- Stone Research Foundation, San
Francisco, CA, USA,The Stone Clinic, San Francisco, CA,
USA,Kevin R. Stone, Stone Research Foundation
for Sports Medicine and Arthritis Research, 3727 Buchanan Street, Suite 310, San
Francisco, CA 94123, USA.
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15
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Three-Dimensional Culture Systems for Dissecting Notch Signalling in Health and Disease. Int J Mol Sci 2021; 22:ijms222212473. [PMID: 34830355 PMCID: PMC8618738 DOI: 10.3390/ijms222212473] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 11/16/2021] [Accepted: 11/17/2021] [Indexed: 12/12/2022] Open
Abstract
Three-dimensional (3D) culture systems opened up new horizons in studying the biology of tissues and organs, modelling various diseases, and screening drugs. Producing accurate in vitro models increases the possibilities for studying molecular control of cell–cell and cell–microenvironment interactions in detail. The Notch signalling is linked to cell fate determination, tissue definition, and maintenance in both physiological and pathological conditions. Hence, 3D cultures provide new accessible platforms for studying activation and modulation of the Notch pathway. In this review, we provide an overview of the recent advances in different 3D culture systems, including spheroids, organoids, and “organ-on-a-chip” models, and their use in analysing the crucial role of Notch signalling in the maintenance of tissue homeostasis, pathology, and regeneration.
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16
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Singh YP, Moses JC, Bhardwaj N, Mandal BB. Overcoming the Dependence on Animal Models for Osteoarthritis Therapeutics - The Promises and Prospects of In Vitro Models. Adv Healthc Mater 2021; 10:e2100961. [PMID: 34302436 DOI: 10.1002/adhm.202100961] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 07/10/2021] [Indexed: 12/19/2022]
Abstract
Osteoarthritis (OA) is a musculoskeletal disease characterized by progressive degeneration of osteochondral tissues. Current treatment is restricted to the reduction of pain and loss of function of the joint. To better comprehend the OA pathophysiological conditions, several models are employed, however; there is no consensus on a suitable model. In this review, different in vitro models being developed for possible therapeutic intervention of OA are outlined. Herein, various in vitro OA models starting from 2D model, co-culture model, 3D models, dynamic culture model to advanced technologies-based models such as 3D bioprinting, bioassembly, organoids, and organ-on-chip-based models are discussed with their advantages and disadvantages. Besides, different growth factors, cytokines, and chemicals being utilized for induction of OA condition are reviewed in detail. Furthermore, there is focus on scrutinizing different molecular and possible therapeutic targets for better understanding the mechanisms and OA therapeutics. Finally, the underlying challenges associated with in vitro models are discussed followed by future prospective. Taken together, a comprehensive overview of in vitro OA models, factors to induce OA-like conditions, and intricate molecular targets with the potential to develop personalized osteoarthritis therapeutics in the future with clinical translation is provided.
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Affiliation(s)
- Yogendra Pratap Singh
- Department of Biosciences and Bioengineering Indian Institute of Technology Guwahati Guwahati Assam 781039 India
| | - Joseph Christakiran Moses
- Department of Biosciences and Bioengineering Indian Institute of Technology Guwahati Guwahati Assam 781039 India
| | - Nandana Bhardwaj
- Department of Science and Mathematics Indian Institute of Information Technology Guwahati Bongora Guwahati Assam 781015 India
| | - Biman B. Mandal
- Department of Biosciences and Bioengineering Indian Institute of Technology Guwahati Guwahati Assam 781039 India
- Centre for Nanotechnology Indian Institute of Technology Guwahati Guwahati Assam 781039 India
- School of Health Sciences and Technology Indian Institute of Technology Guwahati Guwahati Assam 781039 India
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17
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Bartolotti I, Roseti L, Petretta M, Grigolo B, Desando G. A Roadmap of In Vitro Models in Osteoarthritis: A Focus on Their Biological Relevance in Regenerative Medicine. J Clin Med 2021; 10:1920. [PMID: 33925222 PMCID: PMC8124812 DOI: 10.3390/jcm10091920] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 04/20/2021] [Accepted: 04/26/2021] [Indexed: 01/15/2023] Open
Abstract
Osteoarthritis (OA) is a multifaceted musculoskeletal disorder, with a high prevalence worldwide. Articular cartilage and synovial membrane are among the main biological targets in the OA microenvironment. Gaining more knowledge on the accuracy of preclinical in vitro OA models could open innovative avenues in regenerative medicine to bridge major gaps, especially in translation from animals to humans. Our methodological approach entailed searches on Scopus, the Web of Science Core Collection, and EMBASE databases to select the most relevant preclinical in vitro models for studying OA. Predicting the biological response of regenerative strategies requires developing relevant preclinical models able to mimic the OA milieu influencing tissue responses and organ complexity. In this light, standard 2D culture models lack critical properties beyond cell biology, while animal models suffer from several limitations due to species differences. In the literature, most of the in vitro models only recapitulate a tissue compartment, by providing fragmented results. Biotechnological advances may enable scientists to generate new in vitro models that combine easy manipulation and organ complexity. Here, we review the state-of-the-art of preclinical in vitro models in OA and outline how the different preclinical systems (inflammatory/biomechanical/microfluidic models) may be valid tools in regenerative medicine, describing their pros and cons. We then discuss the prospects of specific and combinatorial models to predict biological responses following regenerative approaches focusing on mesenchymal stromal cells (MSCs)-based therapies to reduce animal testing.
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Affiliation(s)
- Isabella Bartolotti
- Laboratorio RAMSES, IRCCS Istituto Ortopedico Rizzoli, via di Barbiano 1/10, 40136 Bologna, Italy; (I.B.); (M.P.); (B.G.)
| | - Livia Roseti
- Laboratorio RAMSES, IRCCS Istituto Ortopedico Rizzoli, via di Barbiano 1/10, 40136 Bologna, Italy; (I.B.); (M.P.); (B.G.)
| | - Mauro Petretta
- Laboratorio RAMSES, IRCCS Istituto Ortopedico Rizzoli, via di Barbiano 1/10, 40136 Bologna, Italy; (I.B.); (M.P.); (B.G.)
- RegenHu Company, Z.I Du Vivier 22, 1690 Villaz-St-Pierre, Switzerland
| | - Brunella Grigolo
- Laboratorio RAMSES, IRCCS Istituto Ortopedico Rizzoli, via di Barbiano 1/10, 40136 Bologna, Italy; (I.B.); (M.P.); (B.G.)
| | - Giovanna Desando
- Laboratorio RAMSES, IRCCS Istituto Ortopedico Rizzoli, via di Barbiano 1/10, 40136 Bologna, Italy; (I.B.); (M.P.); (B.G.)
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18
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Kleuskens MWA, van Donkelaar CC, Kock LM, Janssen RPA, Ito K. An ex vivo human osteochondral culture model. J Orthop Res 2021; 39:871-879. [PMID: 32592503 PMCID: PMC8048497 DOI: 10.1002/jor.24789] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 06/09/2020] [Accepted: 06/12/2020] [Indexed: 02/04/2023]
Abstract
To reduce animal experimentation and to overcome translational issues in cartilage tissue engineering, there is a need to develop an ex vivo human tissue-based approach. This study aims to demonstrate that a human osteochondral explant at different stages of osteoarthritis (OA) can be kept in long-term culture while preserving its viability and composition. Osteochondral explants with either a smooth or fibrillated cartilage surface, representing different OA stages, were harvested from fresh human tibial plateaus. Explants were cultured for 2 or 4 weeks in a double-chamber culture platform. The biochemical content of the cartilage of cultured explants did not significantly change over a period of 4 weeks and these findings were supported by histology. Chondrocytes mostly preserved their metabolic activity during culture and active bone and marrow were found in the periphery of the explants, while metabolic activity was decreased in the bone core in cultured explants compared to fresh explants. In fibrillated explants, chondrocyte viability decreased in the periphery of the sample in cultured groups compared to fresh explants (fresh, 94 ± 6%; cultured, 64% ± 17%, 2 weeks, and 69% ± 17%, 4 weeks; P < .05). Although biochemical and histological results did not show changes within the cartilage tissue, the viability of the explants should be carefully controlled for each specific use. This system provides an alternative to explore drug treatment and implant performance under more controlled experimental conditions than possible in vivo, in combination with clinically relevant human osteochondral tissue.
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Affiliation(s)
- Meike W. A. Kleuskens
- Orthopaedic Biomechanics, Department of Biomedical EngineeringEindhoven University of TechnologyEindhovenThe Netherlands
| | - Corrinus C. van Donkelaar
- Orthopaedic Biomechanics, Department of Biomedical EngineeringEindhoven University of TechnologyEindhovenThe Netherlands
| | - Linda M. Kock
- Orthopaedic Biomechanics, Department of Biomedical EngineeringEindhoven University of TechnologyEindhovenThe Netherlands,LifeTec Group BVEindhovenThe Netherlands
| | - Rob P. A. Janssen
- Orthopaedic Biomechanics, Department of Biomedical EngineeringEindhoven University of TechnologyEindhovenThe Netherlands,Orthopaedic Center MáximaMáxima Medical Center Eindhoven/VeldhovenEindhovenThe Netherlands,Value‐Based Health Care, Faculty of Paramedical SciencesFontys University of Applied SciencesEindhovenThe Netherlands
| | - Keita Ito
- Orthopaedic Biomechanics, Department of Biomedical EngineeringEindhoven University of TechnologyEindhovenThe Netherlands
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19
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Makarczyk MJ, Gao Q, He Y, Li Z, Gold MS, Hochberg MC, Bunnell BA, Tuan RS, Goodman SB, Lin H. Current Models for Development of Disease-Modifying Osteoarthritis Drugs. Tissue Eng Part C Methods 2021; 27:124-138. [PMID: 33403944 PMCID: PMC8098772 DOI: 10.1089/ten.tec.2020.0309] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 12/18/2020] [Indexed: 12/12/2022] Open
Abstract
Osteoarthritis (OA) is a painful and disabling disease that affects millions of people worldwide. Symptom-alleviating treatments exist, although none with long-term efficacy. Furthermore, there are currently no disease-modifying OA drugs (DMOADs) with demonstrated efficacy in OA patients, which is, in part, attributed to a lack of full understanding of the pathogenesis of OA. The inability to translate findings from basic research to clinical applications also highlights the deficiencies in the available OA models at simulating the clinically relevant pathologies and responses to treatments in humans. In this review, the current status in the development of DMOADs will be first presented, with special attention to those in Phase II-IV clinical trials. Next, current in vitro, ex vivo, and in vivo OA models are summarized and the respective advantages and disadvantages of each are highlighted. Of note, the development and application of microphysiological or tissue-on-a-chip systems for modeling OA in humans are presented and the issues that need to be addressed in the future are discussed. Microphysiological systems should be given serious consideration for their inclusion in the DMOAD development pipeline, both for their ability to predict drug safety and efficacy in human clinical trials at present, as well as for their potential to serve as a test platform for personalized medicine. Impact statement At present, no disease-modifying osteoarthritis (OA) drugs (DMOADs) have been approved for widespread clinical use by regulatory bodies. The failure of developing effective DMOADs is likely owing to multiple factors, not the least of which are the intrinsic differences between the intact human knee joint and the preclinical models. This work summarizes the current OA models for the development of DMOADs, discusses the advantages/disadvantages of each, and then proposes future model development to aid in the discovery of effective and personalized DMOADs. The review also highlights the microphysiological systems, which are emerging as a new platform for drug development.
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Affiliation(s)
- Meagan J. Makarczyk
- Department of Orthopaedic Surgery, Center for Cellular and Molecular Engineering, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
- Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Qi Gao
- Department of Orthopaedic Surgery, Stanford University, California, USA
| | - Yuchen He
- Department of Orthopaedic Surgery, Center for Cellular and Molecular Engineering, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Zhong Li
- Department of Orthopaedic Surgery, Center for Cellular and Molecular Engineering, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Michael S. Gold
- Department of Neurobiology, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Mark C. Hochberg
- Department of Medicine and Epidemiology and Public Health, University of Maryland, Baltimore, Maryland, USA
| | - Bruce A. Bunnell
- Department of Microbiology, Immunology, and Genetics, University of North Texas Health Science Center, Fort Worth, Texas, USA
| | - Rocky S. Tuan
- Institute for Tissue Engineering and Regenerative Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Stuart B. Goodman
- Department of Orthopaedic Surgery, Stanford University, California, USA
- Department of Bioengineering, Stanford University, California, USA
| | - Hang Lin
- Department of Orthopaedic Surgery, Center for Cellular and Molecular Engineering, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
- Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
- McGowan Institute for Regenerative Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
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20
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Pathophysiological Perspective of Osteoarthritis. ACTA ACUST UNITED AC 2020; 56:medicina56110614. [PMID: 33207632 PMCID: PMC7696673 DOI: 10.3390/medicina56110614] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 11/05/2020] [Accepted: 11/06/2020] [Indexed: 12/14/2022]
Abstract
Osteoarthritis (OA) is the most well-known degenerative disease among the geriatric and is a main cause of significant disability in daily living. It has a multifactorial etiology and is characterized by pathological changes in the knee joint structure including cartilage erosion, synovial inflammation, and subchondral sclerosis with osteophyte formation. To date, no efficient treatment is capable of altering the pathological progression of OA, and current therapy is broadly divided into pharmacological and nonpharmacological measures prior to surgical intervention. In this review, the significant risk factors and mediators, such as cytokines, proteolytic enzymes, and nitric oxide, that trigger the loss of the normal homeostasis and structural changes in the articular cartilage during the progression of OA are described. As the understanding of the mechanisms underlying OA improves, treatments are being developed that target specific mediators thought to promote the cartilage destruction that results from imbalanced catabolic and anabolic activity in the joint.
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21
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Dodt K, Lamer S, Drießen M, Bölch S, Schlosser A, Lühmann T, Meinel L. Mass-Encoded Reporters Reporting Proteolytic Activity from within the Extracellular Matrix. ACS Biomater Sci Eng 2020; 6:5240-5253. [PMID: 33455273 DOI: 10.1021/acsbiomaterials.0c00691] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Reporting matrix metalloproteinase (MMP) activity directly from the extracellular matrix (ECM) may provide critical insights to better characterize 2D and 3D cell culture model systems of inflammatory diseases and potentially leverage in vivo diagnosis. In this proof-of-concept study, we designed MMP-sensors, which were covalently linked onto the ECM by co-administration of the activated transglutaminase factor XIIIa (FXIIIa). Elements of the featured MMP-sensors are the D-domain of insulin-like growth factor I (IGF-I) through which co-administered FXIIIa covalently links the sensor to the ECM followed by an MMP sensitive peptide sequence and locally reporting on MMP activity, an isotopically labeled mass tag encoding for protease activity, and an affinity tag facilitating purification from fluids. All sensors come in identical pairs, other than the MMP sensitive peptide sequence, which is synthesized with l-amino acids or d-amino acids, the latter serving as internal standard. As a proof of concept for multiplexing, we successfully profiled two MMP-sensors with different MMP sensitive peptide sequences reporting MMP activity directly from an engineered 3D ECM. Future use may include covalently ECM bound diagnostic depots reporting MMP activity from inflamed tissues.
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Affiliation(s)
- Katharina Dodt
- Institute of Pharmacy and Food Chemistry, University of Wuerzburg, Am Hubland, 97074 Wuerzburg, Germany
| | - Stephanie Lamer
- Rudolf-Virchow-Center for Experimental Biomedicine, University of Wuerzburg, Josef-Schneider-Str. 2, 97080 Wuerzburg, Germany
| | - Marc Drießen
- Institute of Pharmacy and Food Chemistry, University of Wuerzburg, Am Hubland, 97074 Wuerzburg, Germany
| | - Sebastian Bölch
- Department for Orthopedic Surgery, Koenig-Ludwig-Haus, University of Wuerzburg, Brettreichstrasse 11, 97074 Wuerzburg, Germany
| | - Andreas Schlosser
- Rudolf-Virchow-Center for Experimental Biomedicine, University of Wuerzburg, Josef-Schneider-Str. 2, 97080 Wuerzburg, Germany
| | - Tessa Lühmann
- Institute of Pharmacy and Food Chemistry, University of Wuerzburg, Am Hubland, 97074 Wuerzburg, Germany
| | - Lorenz Meinel
- Institute of Pharmacy and Food Chemistry, University of Wuerzburg, Am Hubland, 97074 Wuerzburg, Germany
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22
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Pathogenesis of Osteoarthritis: Risk Factors, Regulatory Pathways in Chondrocytes, and Experimental Models. BIOLOGY 2020; 9:biology9080194. [PMID: 32751156 PMCID: PMC7464998 DOI: 10.3390/biology9080194] [Citation(s) in RCA: 100] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 07/24/2020] [Accepted: 07/24/2020] [Indexed: 12/28/2022]
Abstract
As the most common chronic degenerative joint disease, osteoarthritis (OA) is the leading cause of pain and physical disability, affecting millions of people worldwide. Mainly characterized by articular cartilage degradation, osteophyte formation, subchondral bone remodeling, and synovial inflammation, OA is a heterogeneous disease that impacts all component tissues of the articular joint organ. Pathological changes, and thus symptoms, vary from person to person, underscoring the critical need of personalized therapies. However, there has only been limited progress towards the prevention and treatment of OA, and there are no approved effective disease-modifying osteoarthritis drugs (DMOADs). Conventional treatments, including non-steroidal anti-inflammatory drugs (NSAIDs) and physical therapy, are still the major remedies to manage the symptoms until the need for total joint replacement. In this review, we provide an update of the known OA risk factors and relevant mechanisms of action. In addition, given that the lack of biologically relevant models to recapitulate human OA pathogenesis represents one of the major roadblocks in developing DMOADs, we discuss current in vivo and in vitro experimental OA models, with special emphasis on recent development and application potential of human cell-derived microphysiological tissue chip platforms.
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23
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Transdermal co-delivery of glucosamine sulfate and diacerein for the induction of chondroprotection in experimental osteoarthritis. Drug Deliv Transl Res 2020; 10:1327-1340. [PMID: 31907788 DOI: 10.1007/s13346-019-00701-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The aim of this work was to develop a transdermal delivery system consisting of a glucosamine sulfate-laden xanthan hydrogel containing a nanoemulsion-loaded diacerein. The system was intended to prevent cartilage degradation typical of osteoarthritis. The nanoemulsion, made of soybean oil as the oil phase; soybean lecithin, Tween 80, and poloxamer 407 as surfactants; and propylene glycol as cosurfactant, was formed within the hydrogel. The hydrodynamic diameter of the nanoemulsion globules was 81.95 ± 0.256 nm with 0.285 ± 0.036 of PDI value and the zeta potential value of the formulation was 39.33 ± 0.812 mV. CryoSEM and TEM studies revealed the uniform morphology of the vehicle. A rheological study exposed the nanoemulsion-loaded hydrogel as a thixotropic system. Satisfactory storage stability under ICH conditions was established by the zeta potential and rheological studies. Furthermore, skin biocompatibility of the hydrogel was ascertained on the basis of skin irritation study. Additionally, the diffusion of the drugs across rat skin followed a controlled non-Fickian anomalous steady mechanism. Following in vivo administration in experimental osteoarthritis, the transdermal hydrogel showed a reduction in tumor necrosis factor-alpha, C-reactive protein, high mobility group box protein, and monocyte chemoattractant protein-1. Finally, histopathological analysis of the animals showed satisfactory chondroprotection in the in vivo study. In conclusion, the developed transdermal systems showed a potential against the progression of experimental osteoarthritis.
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Janani G, Kumar M, Chouhan D, Moses JC, Gangrade A, Bhattacharjee S, Mandal BB. Insight into Silk-Based Biomaterials: From Physicochemical Attributes to Recent Biomedical Applications. ACS APPLIED BIO MATERIALS 2019; 2:5460-5491. [DOI: 10.1021/acsabm.9b00576] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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25
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Simultaneous effects of hydrostatic pressure and dexamethasone release from electrospun fibers on inflammation-induced chondrocytes. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.06.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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26
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De Moor L, Beyls E, Declercq H. Scaffold Free Microtissue Formation for Enhanced Cartilage Repair. Ann Biomed Eng 2019; 48:298-311. [DOI: 10.1007/s10439-019-02348-4] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 08/17/2019] [Indexed: 12/12/2022]
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27
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Rosser J, Bachmann B, Jordan C, Ribitsch I, Haltmayer E, Gueltekin S, Junttila S, Galik B, Gyenesei A, Haddadi B, Harasek M, Egerbacher M, Ertl P, Jenner F. Microfluidic nutrient gradient-based three-dimensional chondrocyte culture-on-a-chip as an in vitro equine arthritis model. Mater Today Bio 2019; 4:100023. [PMID: 32159153 PMCID: PMC7061638 DOI: 10.1016/j.mtbio.2019.100023] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 07/30/2019] [Accepted: 07/31/2019] [Indexed: 01/27/2023] Open
Abstract
In this work, we describe a microfluidic three-dimensional (3D) chondrocyte culture mimicking in vivo articular chondrocyte morphology, cell distribution, metabolism, and gene expression. This has been accomplished by establishing a physiologic nutrient diffusion gradient across the simulated matrix, while geometric design constraints of the microchambers drive native-like cellular behavior. Primary equine chondrocytes remained viable for the extended culture time of 3 weeks and maintained the low metabolic activity and high Sox9, aggrecan, and Col2 expression typical of articular chondrocytes. Our microfluidic 3D chondrocyte microtissues were further exposed to inflammatory cytokines to establish an animal-free, in vitro osteoarthritis model. Results of our study indicate that our microtissue model emulates the basic characteristics of native cartilage and responds to biochemical injury, thus providing a new foundation for exploration of osteoarthritis pathophysiology in both human and veterinary patients.
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Affiliation(s)
- J Rosser
- Faculty of Technical Chemistry, Vienna University of Technology, Getreidemarkt 9, 1060 Vienna, Austria
| | - B Bachmann
- Faculty of Technical Chemistry, Vienna University of Technology, Getreidemarkt 9, 1060 Vienna, Austria
| | - C Jordan
- Faculty of Technical Chemistry, Vienna University of Technology, Getreidemarkt 9, 1060 Vienna, Austria
| | - I Ribitsch
- Department of Equine Surgery, University of Veterinary Medicine, Veterinärplatz 1, 1210 Vienna, Austria
| | - E Haltmayer
- Department of Equine Surgery, University of Veterinary Medicine, Veterinärplatz 1, 1210 Vienna, Austria
| | - S Gueltekin
- Department of Equine Surgery, University of Veterinary Medicine, Veterinärplatz 1, 1210 Vienna, Austria
| | - S Junttila
- BIOCOMP, Bioinformatics & Scientific Computing VBCF, Vienna Biocenter Core Facilities GmbH, GmbH, Dr. Bohr Gasse 3, 1030 Vienna, Austria
| | - B Galik
- BIOCOMP, Bioinformatics & Scientific Computing VBCF, Vienna Biocenter Core Facilities GmbH, GmbH, Dr. Bohr Gasse 3, 1030 Vienna, Austria
| | - A Gyenesei
- BIOCOMP, Bioinformatics & Scientific Computing VBCF, Vienna Biocenter Core Facilities GmbH, GmbH, Dr. Bohr Gasse 3, 1030 Vienna, Austria
| | - B Haddadi
- Faculty of Technical Chemistry, Vienna University of Technology, Getreidemarkt 9, 1060 Vienna, Austria
| | - M Harasek
- Faculty of Technical Chemistry, Vienna University of Technology, Getreidemarkt 9, 1060 Vienna, Austria
| | - M Egerbacher
- Department of Equine Surgery, University of Veterinary Medicine, Veterinärplatz 1, 1210 Vienna, Austria
| | - P Ertl
- Faculty of Technical Chemistry, Vienna University of Technology, Getreidemarkt 9, 1060 Vienna, Austria
| | - F Jenner
- Department of Equine Surgery, University of Veterinary Medicine, Veterinärplatz 1, 1210 Vienna, Austria
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28
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Stichopus chloronotus aqueous extract as a chondroprotective agent for human chondrocytes isolated from osteoarthitis articular cartilage in vitro. Cytotechnology 2019; 71:521-537. [PMID: 30719603 DOI: 10.1007/s10616-019-00298-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 01/17/2019] [Indexed: 12/13/2022] Open
Abstract
The proinflammatory cytokines, metalloproteinases family (MMPs), inflammatory mediators PGE2, COX-2 and NO are the most important group of compounds responsible for the loss of metabolic homeostasis of articular cartilage by promoting catabolic and destructive processes in the pathogenesis of osteoarthritis (OA). Stichopus chloronotus, a marine sea cucumber which is rich in n-3 PUFAs and phenolic compound, may exert a favorable influence on the course of the disease. The objective of this study was to investigate the regeneration and anti-inflammatory potential of S. chloronotus aqueous extract (SCAE) on human OA articular chondrocytes (HOC). METHODS The HOC isolated from knee joint cartilage removed during surgery were cultured with SCAE for 7 days. The effect of SCAE on anabolic and catabolic gene expression was verified by real-time PCR. Monolayer chondrocytes were stained with toluidine blue whereas sGAG, NO and PGE2 production in medium were analyzed by ELISA. RESULTS The HOC cultured in various SCAE have polygonal morphology maintaining their chondrocytes characteristic. SAE supplementation tested was found to be effective pro-chondrogenic, anti-inflammatory and anti-oxidative agents, as evidenced by upregulation of cartilage specific markers collagen type II, aggrecan core protein and sox-9 expression and downregulation of collagen type 1, IL-1, IL-6, IL-8, MMP-1, MMP-3, MMP-13, COX-2, iNOS and PAR-2 expression. The presence of SCAE in the culture was able to increase sGAG and reduce NO and PGE2 production significantly. CONCLUSIONS These results suggested that SCAE demonstrated chondroprotective ability by suppressing catabolic activities, oxidative damage and effectively promoting chondrocytes growth.
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Mohanraj B, Huang AH, Yeger-McKeever MJ, Schmidt MJ, Dodge GR, Mauck RL. Chondrocyte and mesenchymal stem cell derived engineered cartilage exhibits differential sensitivity to pro-inflammatory cytokines. J Orthop Res 2018; 36:2901-2910. [PMID: 29809295 PMCID: PMC7735382 DOI: 10.1002/jor.24061] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Accepted: 05/21/2018] [Indexed: 02/04/2023]
Abstract
Tissue engineering is a promising approach for the repair of articular cartilage defects, with engineered constructs emerging that match native tissue properties. However, the inflammatory environment of the damaged joint might compromise outcomes, and this may be impacted by the choice of cell source in terms of their ability to operate anabolically in an inflamed environment. Here, we compared the response of engineered cartilage derived from native chondrocytes and mesenchymal stem cells (MSCs) to challenge by TNFα and IL-1β in order to determine if either cell type possessed an inherent advantage. Compositional (extracellular matrix) and functional (mechanical) characteristics, as well as the release of catabolic mediators (matrix metalloproteinases [MMPs], nitric oxide [NO]) were assessed to determine cell- and tissue-level changes following exposure to IL-1β or TNF-α. Results demonstrated that MSC-derived constructs were more sensitive to inflammatory mediators than chondrocyte-derived constructs, exhibiting a greater loss of proteoglycans and functional properties at lower cytokine concentrations. While MSCs and chondrocytes both have the capacity to form functional engineered cartilage in vitro, this study suggests that the presence of an inflammatory environment is more likely to impair the in vivo success of MSC-derived cartilage repair. © 2018 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 36:2901-2910, 2018.
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Affiliation(s)
- Bhavana Mohanraj
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA. 19104,Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA. 19104
| | - Alice H. Huang
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA. 19104,Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA. 19104
| | - Meira J. Yeger-McKeever
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA. 19104
| | - Megan J. Schmidt
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA. 19104
| | - George R. Dodge
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA. 19104,Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA. 19104,Translational Musculoskeletal Research Center, Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA 19104
| | - Robert L. Mauck
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA. 19104,Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA. 19104,Translational Musculoskeletal Research Center, Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA 19104,Address for Correspondence: Robert L. Mauck, Ph.D., Mary Black Ralston Professor of Orthopaedic Surgery, Professor of Bioengineering, Director, McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, University of Pennsylvania, 114A Stemmler Hall, 36th Street and Hamilton Walk, Philadelphia, PA 19104-6081, Phone: 215-898-3294,
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Miron RJ, Zhang Y. Autologous liquid platelet rich fibrin: A novel drug delivery system. Acta Biomater 2018; 75:35-51. [PMID: 29772345 DOI: 10.1016/j.actbio.2018.05.021] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Revised: 04/24/2018] [Accepted: 05/14/2018] [Indexed: 02/07/2023]
Abstract
There is currently widespread interest within the biomaterial field to locally deliver biomolecules for bone and cartilage regeneration. Substantial work to date has focused on the potential role of these biomolecules during the healing process, and the carrier system utilized is a key factor in their effectiveness. Platelet rich fibrin (PRF) is a naturally derived fibrin scaffold that is easily obtained from peripheral blood following centrifugation. Slower centrifugation speeds have led to the commercialization of a liquid formulation (liquid-PRF) resulting in an upper plasma layer composed of liquid fibrinogen/thrombin prior to clot formation that remains in its liquid phase for approximately 15 min until injected into bodily tissues. Herein, we introduce the use of liquid PRF as an advanced local delivery system for small and large biomolecules. Potential target molecules including large (growth factors/cytokines and morphogenetic/angiogenic factors), as well as small (antibiotics, peptides, gene therapy and anti-osteoporotic) molecules are considered potential candidates for enhanced bone/cartilage tissue regeneration. Furthermore, liquid-PRF is introduced as a potential carrier system for various cell types and nano-sized particles that are capable of limiting/by-passing the immune system and minimizing potential foreign body reactions within host tissues following injection. STATEMENT OF SIGNIFICANCE There is currently widespread interest within the biomaterial field to locally deliver biomolecules for bone and cartilage regeneration. This review article focuses on the use of a liquid version of platelet rich fibrin (PRF) composed of liquid fibrinogen/thrombin as a drug delivery system. Herein, we introduce the use of liquid PRF as an advanced local delivery system for small and large biomolecules including growth factors, cytokines and morphogenetic/angiogenic factors, as well as antibiotics, peptides, gene therapy and anti-osteoporotic molecules as potential candidates for enhanced bone/cartilage tissue regeneration.
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31
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Hu JL, Todhunter ME, LaBarge MA, Gartner ZJ. Opportunities for organoids as new models of aging. J Cell Biol 2017; 217:39-50. [PMID: 29263081 PMCID: PMC5748992 DOI: 10.1083/jcb.201709054] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 11/13/2017] [Accepted: 11/27/2017] [Indexed: 01/02/2023] Open
Abstract
The biology of aging is challenging to study, particularly in humans. As a result, model organisms are used to approximate the physiological context of aging in humans. However, the best model organisms remain expensive and time-consuming to use. More importantly, they may not reflect directly on the process of aging in people. Human cell culture provides an alternative, but many functional signs of aging occur at the level of tissues rather than cells and are therefore not readily apparent in traditional cell culture models. Organoids have the potential to effectively balance between the strengths and weaknesses of traditional models of aging. They have sufficient complexity to capture relevant signs of aging at the molecular, cellular, and tissue levels, while presenting an experimentally tractable alternative to animal studies. Organoid systems have been developed to model many human tissues and diseases. Here we provide a perspective on the potential for organoids to serve as models for aging and describe how current organoid techniques could be applied to aging research.
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Affiliation(s)
- Jennifer L Hu
- University of California Berkeley-University of California San Francisco Graduate Program in Bioengineering, San Francisco, CA
| | - Michael E Todhunter
- Center for Cancer and Aging, Beckman Research Institute at City of Hope, Duarte, CA
| | - Mark A LaBarge
- Center for Cancer and Aging, Beckman Research Institute at City of Hope, Duarte, CA
| | - Zev J Gartner
- Department of Pharmaceutical Chemistry, University of California San Francisco, San Francisco, CA .,National Science Foundation Center for Cellular Construction, University of California San Francisco, San Francisco, CA.,Chan Zuckerberg Biohub, San Francisco, CA
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32
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Silverstein AM, Stoker AM, Ateshian GA, Bulinski JC, Cook JL, Hung CT. Transient expression of the diseased phenotype of osteoarthritic chondrocytes in engineered cartilage. J Orthop Res 2017; 35:829-836. [PMID: 27183499 PMCID: PMC5383531 DOI: 10.1002/jor.23301] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Accepted: 05/10/2016] [Indexed: 02/04/2023]
Abstract
Due to the degradation of osteoarthritic (OA) cartilage in post-traumatic OA (PTOA), these tissues are challenging to study and manipulate in vitro. In this study, chondrocytes isolated from either PTOA (meniscal-release (MR) model) or normal (contralateral limb) cartilage of canine knee joints were used to form micropellets to assess the maintenance of the OA chondrocyte phenotype in vitro. Media samples from the micropellet cultures were used to measure matrix metalloproteinase (MMP), chemokine, and cytokine concentrations. Significant differences in matrix synthesis were observed as a function of disease with OA chondrocytes generally synthesizing more extracellular matrix with increasing time in culture. No donor dependent differences were detected. Luminex multiplex analysis of pellet culture media showed disease and time-dependent differences in interleukin (IL)-8, keratinocyte chemoattractant (KC)-like protein, MMP-1, MMP-2, and MMP-3, which are differentially expressed in OA. This memory of their diseased phenotype persists for the first 2 weeks of culture. These results demonstrate the potential to use chondrocytes from an animal model of OA to study phenotype alterations during the progression and treatment of OA. © 2016 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 35:829-836, 2017.
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Affiliation(s)
- Amy M. Silverstein
- Department of Biomedical Engineering, Columbia University, New York, 1210 Amsterdam Avenue, 351 Engineering Terrace, New York 10027
| | - Aaron M. Stoker
- Department of Orthopaedic Surgery, University of Missouri, Columbia, Missouri
| | - Gerard A. Ateshian
- Department of Biomedical Engineering, Columbia University, New York, 1210 Amsterdam Avenue, 351 Engineering Terrace, New York 10027,Department of Mechanical Engineering, Columbia University, New York, New York
| | - J. Chloe Bulinski
- Department of Biological Sciences, Columbia University, New York, New York
| | - James L. Cook
- Department of Orthopaedic Surgery, University of Missouri, Columbia, Missouri
| | - Clark T. Hung
- Department of Biomedical Engineering, Columbia University, New York, 1210 Amsterdam Avenue, 351 Engineering Terrace, New York 10027
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Utomo L, Bastiaansen-Jenniskens YM, Verhaar JAN, van Osch GJVM. Cartilage inflammation and degeneration is enhanced by pro-inflammatory (M1) macrophages in vitro, but not inhibited directly by anti-inflammatory (M2) macrophages. Osteoarthritis Cartilage 2016; 24:2162-2170. [PMID: 27502245 DOI: 10.1016/j.joca.2016.07.018] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Revised: 07/09/2016] [Accepted: 07/28/2016] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Macrophages play a crucial role in the progression of osteoarthritis (OA). Their phenotype may range from pro-inflammatory to anti-inflammatory. The aim of this study was to evaluate the direct effects of macrophage subtypes on cartilage by culturing macrophage conditioned medium (MCM) on human articular cartilage. DESIGN Human OA cartilage explants were cultured with MCM of pro-inflammatory M(IFNγ+TNFα), or anti-inflammatory M(IL-4) or M(IL-10) human monocyte-derived macrophages. To assess effects of anti-inflammatory macrophages, the cartilage was cultured with a combination of MCM phenotypes as well as pre-stimulated with IFNγ+TNFα cartilage before culture with MCM. The reactions of the explants were assessed by gene expression, nitric oxide (NO) production and release of glycosaminoglycans (GAGs). RESULTS M(IFNγ+TNFα) MCM affected OA cartilage by upregulation of IL1B (Interleukin 1β), IL6, MMP13 (Matrix Metalloproteinase-13) and ADAMTS5 (A Disintegrin And Metalloproteinase with Thrombospondin Motifs-5), while inhibiting ACAN (aggrecan) and COL2A1 (collagen type II). M(IL-10) upregulated IL1B and Suppressor of cytokine signaling 1 (SOCS1). NO production and GAG release by the cartilage was increased when cultured with M(IFNγ+TNFα) MCM. M(IL-4) and M(IL-10) did not inhibit the effects of M(IFNγ+TNFα) MCM of neither phenotype affected IFNγ+TNFα pre-stimulated cartilage, in which an inflammatory gene response was deliberately induced. CONCLUSION M(IFNγ+TNFα) macrophages have a prominent direct effect on OA cartilage, while M(IL-4) and M(IL-10) do not inhibit the effects of M(IFNγ+TNFα), or IFNγ+TNFα induced inflammation of the cartilage. Therapies aiming at inhibiting cartilage degeneration may take this into account by directing suppression of pro-inflammatory macrophages or stimulation of anti-inflammatory macrophages.
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Affiliation(s)
- L Utomo
- Department of Orthopaedics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.
| | - Y M Bastiaansen-Jenniskens
- Department of Orthopaedics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.
| | - J A N Verhaar
- Department of Orthopaedics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.
| | - G J V M van Osch
- Department of Orthopaedics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands; Department of Otorhinolaryngology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.
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Samavedi S, Diaz-Rodriguez P, Erndt-Marino JD, Hahn MS. A Three-Dimensional Chondrocyte-Macrophage Coculture System to Probe Inflammation in Experimental Osteoarthritis. Tissue Eng Part A 2016; 23:101-114. [PMID: 27736317 DOI: 10.1089/ten.tea.2016.0007] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The goal of the present study was to develop a fully three-dimensional (3D) coculture system that would allow for systematic evaluation of the interplay between activated macrophages (AMs) and chondrocytes in osteoarthritic disease progression and treatment. Toward this end, our coculture system was first validated against existing in vitro osteoarthritis models, which have generally cultured healthy normal chondrocytes (NCs)-in two-dimensional (2D) or 3D-with proinflammatory AMs in 2D. In this work, NCs and AMs were both encapsulated within poly(ethylene glycol) diacrylate hydrogels to mimic the native 3D environments of both cell types within the osteoarthritic joint. As with previous studies, increases in matrix metalloproteinases (MMPs) and proinflammatory cytokines associated with the early stages of osteoarthritis were observed during NC-AM coculture, as were decreases in protein-level Aggrecan and collagen II. Thereafter, the coculture system was extended to osteoarthritic chondrocytes (OACs) and AMs to evaluate the potential effects of AMs on pre-existing osteoarthritic phenotypes. OACs in coculture with AMs expressed significantly higher levels of MMP-1, MMP-3, MMP-9, MMP-13, IL-1β, TNF-α, IL-6, IL-8, and IFN-γ compared to OACs in mono-culture, indicating that proinflammatory macrophages may intensify the abnormal matrix degradation and cytokine secretion already associated with OACs. Likewise, AMs cocultured with OACs expressed significantly more IL-1β and VEGF-A compared to AM mono-culture controls, suggesting that OACs may intensify abnormal macrophage activation. Finally, OACs cultured in the presence of nonactivated macrophages produced lower levels of MMP-9 and proinflammatory cytokines IL-1β, TNF-α, and IFN-γ compared to OACs in the OAC-AM system, results that are consistent with anti-inflammatory agents temporarily reducing certain OA symptoms. In summary, the 3D coculture system developed herein captures several key features of inflammatory OA and may prove useful in future screening of therapeutic agents and/or assessment of disease progression mechanisms.
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Affiliation(s)
- Satyavrata Samavedi
- 1 Department of Biomedical Engineering, Rensselaer Polytechnic Institute , Troy, New York.,2 Department of Chemical Engineering, Indian Institute of Technology , Hyderabad, India
| | | | - Joshua D Erndt-Marino
- 1 Department of Biomedical Engineering, Rensselaer Polytechnic Institute , Troy, New York
| | - Mariah S Hahn
- 1 Department of Biomedical Engineering, Rensselaer Polytechnic Institute , Troy, New York
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Ondrésik M, Azevedo Maia FR, da Silva Morais A, Gertrudes AC, Dias Bacelar AH, Correia C, Gonçalves C, Radhouani H, Amandi Sousa R, Oliveira JM, Reis RL. Management of knee osteoarthritis. Current status and future trends. Biotechnol Bioeng 2016; 114:717-739. [DOI: 10.1002/bit.26182] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Revised: 07/13/2016] [Accepted: 09/09/2016] [Indexed: 12/13/2022]
Affiliation(s)
- Marta Ondrésik
- 3B's Research Group-Biomaterials, Biodegradables and Biomimetics; Universidade do Minho, Headquarters of the European Institute Regenerative Medicine; AvePark 4806-909, Caldas das Taipas Guimaraes Portugal
- ICVS/3B's-PT Government Associated Laboratory; Braga/Guimaraes Portugal
| | - Fatima R. Azevedo Maia
- 3B's Research Group-Biomaterials, Biodegradables and Biomimetics; Universidade do Minho, Headquarters of the European Institute Regenerative Medicine; AvePark 4806-909, Caldas das Taipas Guimaraes Portugal
- ICVS/3B's-PT Government Associated Laboratory; Braga/Guimaraes Portugal
| | - Alain da Silva Morais
- 3B's Research Group-Biomaterials, Biodegradables and Biomimetics; Universidade do Minho, Headquarters of the European Institute Regenerative Medicine; AvePark 4806-909, Caldas das Taipas Guimaraes Portugal
- ICVS/3B's-PT Government Associated Laboratory; Braga/Guimaraes Portugal
- Stemmatters, Biotecnologia e Medicina Regenerativa SA; Guimaraes Portugal
| | - Ana C. Gertrudes
- 3B's Research Group-Biomaterials, Biodegradables and Biomimetics; Universidade do Minho, Headquarters of the European Institute Regenerative Medicine; AvePark 4806-909, Caldas das Taipas Guimaraes Portugal
- ICVS/3B's-PT Government Associated Laboratory; Braga/Guimaraes Portugal
- Stemmatters, Biotecnologia e Medicina Regenerativa SA; Guimaraes Portugal
| | - Ana H. Dias Bacelar
- 3B's Research Group-Biomaterials, Biodegradables and Biomimetics; Universidade do Minho, Headquarters of the European Institute Regenerative Medicine; AvePark 4806-909, Caldas das Taipas Guimaraes Portugal
- ICVS/3B's-PT Government Associated Laboratory; Braga/Guimaraes Portugal
- Stemmatters, Biotecnologia e Medicina Regenerativa SA; Guimaraes Portugal
| | - Cristina Correia
- 3B's Research Group-Biomaterials, Biodegradables and Biomimetics; Universidade do Minho, Headquarters of the European Institute Regenerative Medicine; AvePark 4806-909, Caldas das Taipas Guimaraes Portugal
- ICVS/3B's-PT Government Associated Laboratory; Braga/Guimaraes Portugal
- Stemmatters, Biotecnologia e Medicina Regenerativa SA; Guimaraes Portugal
| | - Cristiana Gonçalves
- 3B's Research Group-Biomaterials, Biodegradables and Biomimetics; Universidade do Minho, Headquarters of the European Institute Regenerative Medicine; AvePark 4806-909, Caldas das Taipas Guimaraes Portugal
- ICVS/3B's-PT Government Associated Laboratory; Braga/Guimaraes Portugal
- Stemmatters, Biotecnologia e Medicina Regenerativa SA; Guimaraes Portugal
| | - Hajer Radhouani
- 3B's Research Group-Biomaterials, Biodegradables and Biomimetics; Universidade do Minho, Headquarters of the European Institute Regenerative Medicine; AvePark 4806-909, Caldas das Taipas Guimaraes Portugal
- ICVS/3B's-PT Government Associated Laboratory; Braga/Guimaraes Portugal
- Stemmatters, Biotecnologia e Medicina Regenerativa SA; Guimaraes Portugal
| | - Rui Amandi Sousa
- 3B's Research Group-Biomaterials, Biodegradables and Biomimetics; Universidade do Minho, Headquarters of the European Institute Regenerative Medicine; AvePark 4806-909, Caldas das Taipas Guimaraes Portugal
- ICVS/3B's-PT Government Associated Laboratory; Braga/Guimaraes Portugal
- Stemmatters, Biotecnologia e Medicina Regenerativa SA; Guimaraes Portugal
| | - Joaquim M. Oliveira
- 3B's Research Group-Biomaterials, Biodegradables and Biomimetics; Universidade do Minho, Headquarters of the European Institute Regenerative Medicine; AvePark 4806-909, Caldas das Taipas Guimaraes Portugal
- ICVS/3B's-PT Government Associated Laboratory; Braga/Guimaraes Portugal
| | - Rui L. Reis
- 3B's Research Group-Biomaterials, Biodegradables and Biomimetics; Universidade do Minho, Headquarters of the European Institute Regenerative Medicine; AvePark 4806-909, Caldas das Taipas Guimaraes Portugal
- ICVS/3B's-PT Government Associated Laboratory; Braga/Guimaraes Portugal
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Chattopadhyay H, Auddy B, Sur T, Sana S, Datta S. Accentuated transdermal application of glucosamine sulphate attenuates experimental osteoarthritis induced by monosodium iodoacetate. J Mater Chem B 2016; 4:4470-4481. [DOI: 10.1039/c6tb00327c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Osteoarthritis is a chronic degenerative joint disease causing pain and disability.
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Affiliation(s)
- Helen Chattopadhyay
- Department of Chemical Technology
- University of Calcutta
- Kolkata – 700 009
- India
| | - Biswajit Auddy
- Department of Chemical Technology
- University of Calcutta
- Kolkata – 700 009
- India
| | - Tapas Sur
- Department of Pharmacology
- Institute of Post Graduate Medical Education & Research
- Kolkata – 700020
- India
| | - Santanu Sana
- Department of Chemical Technology
- University of Calcutta
- Kolkata – 700 009
- India
| | - Sriparna Datta
- Department of Chemical Technology
- University of Calcutta
- Kolkata – 700 009
- India
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Chan DD, Xiao W, Li J, de la Motte CA, Sandy JD, Plaas A. Deficiency of hyaluronan synthase 1 (Has1) results in chronic joint inflammation and widespread intra-articular fibrosis in a murine model of knee joint cartilage damage. Osteoarthritis Cartilage 2015; 23:1879-89. [PMID: 26521733 PMCID: PMC4630789 DOI: 10.1016/j.joca.2015.06.021] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Revised: 06/25/2015] [Accepted: 06/28/2015] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Articular cartilage defects commonly result from traumatic injury and predispose to degenerative joint diseases. To test the hypothesis that aberrant healing responses and chronic inflammation lead to osteoarthritis (OA), we examined spatiotemporal changes in joint tissues after cartilage injury in murine knees. Since intra-articular injection of hyaluronan (HA) can attenuate injury-induced osteoarthritis in wild-type (WT) mice, we investigated a role for HA in the response to cartilage injury in mice lacking HA synthase 1 (Has1(-/-)). DESIGN Femoral groove cartilage of WT and Has1(-/-) mice was debrided to generate a non-bleeding wound. Macroscopic imaging, histology, and gene expression were used to evaluate naïve, sham-operated, and injured joints. RESULTS Acute responses (1-2 weeks) in injured joints from WT mice included synovial hyperplasia with HA deposition and joint-wide increases in expression of genes associated with inflammation, fibrosis, and extracellular matrix (ECM) production. By 4 weeks, some resurfacing of damaged cartilage occurred, and early cell responses were normalized. Cartilage damage in Has1(-/-) mice also induced early responses; however, at 4 weeks, inflammation and fibrosis genes remained elevated with widespread cartilage degeneration and fibrotic scarring in the synovium and joint capsule. CONCLUSIONS We conclude that the ineffective repair of injured cartilage in Has1(-/-) joints can be at least partly explained by the markedly enhanced expression of particular genes in pathways linked to ECM turnover, IL-17/IL-6 cytokine signaling, and apoptosis. Notably, Has1 ablation does not alter gross HA content in the ECM, suggesting that HAS1 has a unique function in the metabolism of inflammatory HA matrices.
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Affiliation(s)
- Deva D. Chan
- Department of Internal Medicine, Division of Rheumatology, Rush University Medical Center; Chicago, Illinois, USA
| | - Wenfeng Xiao
- Department of Orthopedics, Xiangya Hospital, Central South University; Changsha, Hunan, China
| | - Jun Li
- Department of Internal Medicine, Division of Rheumatology, Rush University Medical Center; Chicago, Illinois, USA
| | | | - John D. Sandy
- Department of Biochemistry, Rush University Medical Center; Chicago, Illinois, USA,Department of Orthopedic Surgery, Rush University Medical Center; Chicago, Illinois, USA
| | - Anna Plaas
- Department of Internal Medicine, Division of Rheumatology, Rush University Medical Center; Chicago, Illinois, USA,Department of Biochemistry, Rush University Medical Center; Chicago, Illinois, USA,Corresponding author: Anna Plaas, Ph.D., 1653 West Congress Parkway, Jelke Building, Suite 1413, Chicago, IL 60612, Phone: +1-312-942-7194, Fax: +1-312-563-2267,
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Benam KH, Dauth S, Hassell B, Herland A, Jain A, Jang KJ, Karalis K, Kim HJ, MacQueen L, Mahmoodian R, Musah S, Torisawa YS, van der Meer AD, Villenave R, Yadid M, Parker KK, Ingber DE. Engineered in vitro disease models. ANNUAL REVIEW OF PATHOLOGY-MECHANISMS OF DISEASE 2015; 10:195-262. [PMID: 25621660 DOI: 10.1146/annurev-pathol-012414-040418] [Citation(s) in RCA: 355] [Impact Index Per Article: 39.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The ultimate goal of most biomedical research is to gain greater insight into mechanisms of human disease or to develop new and improved therapies or diagnostics. Although great advances have been made in terms of developing disease models in animals, such as transgenic mice, many of these models fail to faithfully recapitulate the human condition. In addition, it is difficult to identify critical cellular and molecular contributors to disease or to vary them independently in whole-animal models. This challenge has attracted the interest of engineers, who have begun to collaborate with biologists to leverage recent advances in tissue engineering and microfabrication to develop novel in vitro models of disease. As these models are synthetic systems, specific molecular factors and individual cell types, including parenchymal cells, vascular cells, and immune cells, can be varied independently while simultaneously measuring system-level responses in real time. In this article, we provide some examples of these efforts, including engineered models of diseases of the heart, lung, intestine, liver, kidney, cartilage, skin and vascular, endocrine, musculoskeletal, and nervous systems, as well as models of infectious diseases and cancer. We also describe how engineered in vitro models can be combined with human inducible pluripotent stem cells to enable new insights into a broad variety of disease mechanisms, as well as provide a test bed for screening new therapies.
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Affiliation(s)
- Kambez H Benam
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, Massachusetts 02115;
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Pelttari K, Pippenger B, Mumme M, Feliciano S, Scotti C, Mainil-Varlet P, Procino A, von Rechenberg B, Schwamborn T, Jakob M, Cillo C, Barbero A, Martin I. Adult human neural crest-derived cells for articular cartilage repair. Sci Transl Med 2015; 6:251ra119. [PMID: 25163479 DOI: 10.1126/scitranslmed.3009688] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
In embryonic models and stem cell systems, mesenchymal cells derived from the neuroectoderm can be distinguished from mesoderm-derived cells by their Hox-negative profile--a phenotype associated with enhanced capacity of tissue regeneration. We investigated whether developmental origin and Hox negativity correlated with self-renewal and environmental plasticity also in differentiated cells from adults. Using hyaline cartilage as a model, we showed that adult human neuroectoderm-derived nasal chondrocytes (NCs) can be constitutively distinguished from mesoderm-derived articular chondrocytes (ACs) by lack of expression of specific HOX genes, including HOXC4 and HOXD8. In contrast to ACs, serially cloned NCs could be continuously reverted from differentiated to dedifferentiated states, conserving the ability to form cartilage tissue in vitro and in vivo. NCs could also be reprogrammed to stably express Hox genes typical of ACs upon implantation into goat articular cartilage defects, directly contributing to cartilage repair. Our findings identify previously unrecognized regenerative properties of HOX-negative differentiated neuroectoderm cells in adults, implying a role for NCs in the unmet clinical challenge of articular cartilage repair. An ongoing phase 1 clinical trial preliminarily indicated the safety and feasibility of autologous NC-based engineered tissues for the treatment of traumatic articular cartilage lesions.
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Affiliation(s)
- Karoliina Pelttari
- Departments of Surgery and of Biomedicine, University Hospital Basel, University of Basel, Hebelstrasse 20, 4031 Basel, Switzerland
| | - Benjamin Pippenger
- Departments of Surgery and of Biomedicine, University Hospital Basel, University of Basel, Hebelstrasse 20, 4031 Basel, Switzerland
| | - Marcus Mumme
- Departments of Surgery and of Biomedicine, University Hospital Basel, University of Basel, Hebelstrasse 20, 4031 Basel, Switzerland
| | - Sandra Feliciano
- Departments of Surgery and of Biomedicine, University Hospital Basel, University of Basel, Hebelstrasse 20, 4031 Basel, Switzerland
| | - Celeste Scotti
- Istituto Di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Ortopedico Galeazzi, Via R. Galeazzi 4, 20161 Milano, Italy
| | - Pierre Mainil-Varlet
- AGINKO Research AG, Route de l'ancienne Papeterie, P. O. Box 30, 1723 Marly, Switzerland
| | - Alfredo Procino
- Department of Medicine and Surgery, Federico II Medical School, Via S. Pansini 5, 80131 Napoli, Italy
| | - Brigitte von Rechenberg
- Musculoskeletal Research Unit, Equine Hospital, University of Zurich, Winterthurerstrasse 260, 8057 Zurich, Switzerland
| | | | - Marcel Jakob
- Departments of Surgery and of Biomedicine, University Hospital Basel, University of Basel, Hebelstrasse 20, 4031 Basel, Switzerland
| | - Clemente Cillo
- Department of Medicine and Surgery, Federico II Medical School, Via S. Pansini 5, 80131 Napoli, Italy
| | - Andrea Barbero
- Departments of Surgery and of Biomedicine, University Hospital Basel, University of Basel, Hebelstrasse 20, 4031 Basel, Switzerland
| | - Ivan Martin
- Departments of Surgery and of Biomedicine, University Hospital Basel, University of Basel, Hebelstrasse 20, 4031 Basel, Switzerland.
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Bhattacharjee M, Coburn J, Centola M, Murab S, Barbero A, Kaplan DL, Martin I, Ghosh S. Tissue engineering strategies to study cartilage development, degeneration and regeneration. Adv Drug Deliv Rev 2015; 84:107-22. [PMID: 25174307 DOI: 10.1016/j.addr.2014.08.010] [Citation(s) in RCA: 102] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Revised: 08/01/2014] [Accepted: 08/20/2014] [Indexed: 01/09/2023]
Abstract
Cartilage tissue engineering has primarily focused on the generation of grafts to repair cartilage defects due to traumatic injury and disease. However engineered cartilage tissues have also a strong scientific value as advanced 3D culture models. Here we first describe key aspects of embryonic chondrogenesis and possible cell sources/culture systems for in vitro cartilage generation. We then review how a tissue engineering approach has been and could be further exploited to investigate different aspects of cartilage development and degeneration. The generated knowledge is expected to inform new cartilage regeneration strategies, beyond a classical tissue engineering paradigm.
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41
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Ruthard J, Kamper M, Renno JH, Kühn G, Hillebrand U, Höllriegl S, Johannis W, Zaucke F, Klatt AR. COMP does not directly modify the expression of genes involved in cartilage homeostasis in contrast to several other cartilage matrix proteins. Connect Tissue Res 2014; 55:348-56. [PMID: 25111190 DOI: 10.3109/03008207.2014.951440] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE We investigated whether COMP may modify cartilage metabolism and play a role as an endogenous disease aggravating factor in OA. MATERIALS AND METHODS Full-length and momomeric COMP was recombinantly expressed in human embryonic kidney cells and purified it via affinity chromatography. Purified COMP was used to stimulate either primary human chondrocytes or cartilage explants. Changes in the expression profiles of inflammatory genes, differentiation markers and growth factors were examined by immunoassay and by quantitative real-time reverse-transcription polymerase chain reaction. RESULTS Incubation of primary human chondrocytes or cartilage explants in the presence of COMP did not induce statistically significant changes in the expression of IL-6, MMP1, MMP13, collagen I, collagen II, collagen X, TGF-β1 and BMP-2. CONCLUSIONS In contrast to collagen II and matrilin-3, COMP lacks the ability to trigger a proinflammatory response in chondrocytes, although it carries an RGD motif and can bind to integrins. COMP is a well-accepted biomarker for osteoarthritis but increased COMP levels do not necessarily correlate with inflammation.
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Affiliation(s)
- Johannes Ruthard
- Institute for Clinical Chemistry, University of Cologne , Cologne , Germany
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42
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Lau JJ, Wang RM, Black LD. Development of an arbitrary waveform membrane stretcher for dynamic cell culture. Ann Biomed Eng 2014; 42:1062-73. [PMID: 24473700 DOI: 10.1007/s10439-014-0976-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Accepted: 01/10/2014] [Indexed: 11/29/2022]
Abstract
In this paper, a novel cell stretcher design that mimics the real-time stretch of the heart wall is introduced. By culturing cells under stretched conditions that mimics the mechanical aspects of the native cardiac environment, better understanding on the role of biomechanical signaling on cell development can be achieved. The device utilizes a moving magnet linear actuator controlled through pulse-width modulated power combined with an automated closed loop feedback system for accurate generation of a designated mechanical stretch profile. The system's capability to stretch a cell culture membrane and accuracy of the designated frequency and waveform production for cyclic stretching were evaluated. Temperature and degradation assessments as well as a scalable design demonstrated the system's cell culture application for long term, in vitro studies.
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Affiliation(s)
- Jason J Lau
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA, 02155, USA
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43
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Hayden RS, Quinn KP, Alonzo CA, Georgakoudi I, Kaplan DL. Quantitative characterization of mineralized silk film remodeling during long-term osteoblast-osteoclast co-culture. Biomaterials 2014; 35:3794-802. [PMID: 24484674 DOI: 10.1016/j.biomaterials.2014.01.034] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2013] [Accepted: 01/13/2014] [Indexed: 12/12/2022]
Abstract
The goal of this study was to explore quantitative assessments of mineralized silk protein biomaterial films by co-cultures of human mesenchymal stem cell-derived osteoblasts and human acute monocytic leukemia cell line-derived osteoclasts during long-term culture (8-32 weeks). The remodeled films were quantitatively assessed using three different techniques during this extended cultivation to provide more comprehensive insight into the impact of co-cultures on surface remodeling. Scanning electron microscopy (SEM) with three dimensional surface reconstructions was used to quantitatively determine various surface morphological features and measures of roughness indicative of remodeling by the cells. Additionally, reconstructed surfaces were converted to depth images for Fourier analysis to quantify the potential fractal organization of biomineralization. The long-term remodeled films were also imaged using confocal reflectance microscopy and micro-computed tomography (micro-CT) to further quantify morphological changes. Films remodeled in co-culture demonstrated increased roughness parameters, fractal organization, and volume compared to films remodeled by osteoblasts alone. The combination of these techniques to quantify remodeling of mineralized protein films shows promise for quantifying processes related to mineralized surfaces.
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Affiliation(s)
- Rebecca S Hayden
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
| | - Kyle P Quinn
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
| | - Carlo A Alonzo
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
| | - Irene Georgakoudi
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA.
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44
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Hayden RS, Fortin JP, Harwood B, Subramanian B, Quinn KP, Georgakoudi I, Kopin AS, Kaplan DL. Cell-tethered ligands modulate bone remodeling by osteoblasts and osteoclasts. ADVANCED FUNCTIONAL MATERIALS 2014; 24:472-479. [PMID: 25419210 PMCID: PMC4235974 DOI: 10.1002/adfm.201302210] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The goals of the present study are to establish an in vitro co-culture model of osteoblast and osteoclast function and to quantify the resulting bone remodeling. The bone is tissue engineered using well-defined silk protein biomaterials in 2D and 3D formats in combination with human cells expressing tethered agonists for selected G protein-coupled receptors (GPCRs). The tethered constructs are introduced with the objective of triggering sustained and localized GPCR signaling. The cell-modified biomaterial surfaces are reconstructed from SEM images into 3D models using image processing for quantitative measurement of surface characteristics. Parathyroid hormone (PTH) and glucose-dependent insulinotropic peptide (GIP) are selected because of their roles in bone remodeling for expression in tethered format on bone marrow derived human mesenchymal stem cells (hMSCs). Increased calcium deposition and increased surface roughness are found in 3D digital surface models constructed from SEM images of silk protein films remodeled by the co-cultures containing the tethered PTH, and decreased surface roughness is found for the films remodeled by the tethered GIP co-cultures. Increased surface roughness is not found in monocultures of hMSCs expressing tethered PTH, suggesting that osteoclast-osteoblast interactions in the presence of PTH signaling are responsible for the increased mineralization. These data point towards the design of in vitro bone models in which osteoblast-osteoclast interactions are mimicked for a better understanding of bone remodeling.
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Affiliation(s)
| | | | | | | | | | | | - Alan S. Kopin
- 800 Washington Street, Box 7703, Boston, MA 02111 (USA)
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45
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Hayden RS, Vollrath M, Kaplan DL. Effects of clodronate and alendronate on osteoclast and osteoblast co-cultures on silk-hydroxyapatite films. Acta Biomater 2014; 10:486-93. [PMID: 24096150 DOI: 10.1016/j.actbio.2013.09.028] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2013] [Revised: 09/20/2013] [Accepted: 09/24/2013] [Indexed: 01/06/2023]
Abstract
The goal of this study was to explore the effects of osteoporosis-related therapeutics on bone remodeling in vitro. A previously established bone-tissue mimetic system consisting of silk protein biomaterials in combination with hydroxyapatite and human cells was used for the study. Silk-hydroxyapatite films were pre-complexed with the non-nitrogenous bisphosphonate clodronate or the nitrogenous bisphosphonate alendronate and cultured with THP-1 human acute monocytic leukemia cell line-derived osteoclasts, human mesenchymal stem cell derived osteoblasts or a direct co-culture of the two cell types. Metabolic activity, calcium deposition and alkaline phosphatase activity were assessed over 12 weeks, and reconstructed remodeled biomaterial surfaces were also evaluated for quantitative morphological changes. Increased metabolic activity and increased roughness were found on the clodronate-complexed biomaterial substrates remodeled by osteoblasts and co-cultures of osteoblasts with osteoclasts, even at doses high enough to cause a 90% decrease in osteoclast metabolic activity. Films complexed with low doses of alendronate resulted in increased metabolic activity and calcium deposition by osteoblasts, while higher doses were similarly toxic among osteoclasts, osteoblasts and co-cultures. These results point to the utility of these well-defined bone-mimetic in vitro cultures as useful screens for therapeutics for bone-related diseases, particularly with the ability to conduct studies for extended duration (here for 12 weeks) and with pre-complexed drugs to mimic conditions found in vivo.
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46
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Blasioli DJ, Kaplan DL. The roles of catabolic factors in the development of osteoarthritis. TISSUE ENGINEERING PART B-REVIEWS 2013; 20:355-63. [PMID: 24172137 DOI: 10.1089/ten.teb.2013.0377] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Osteoarthritis (OA) is the most prevalent disease of articular joints characterized by joint space narrowing on X-ray, joint pain, and a loss of joint function through progressive cartilage degradation and intermittent synovial inflammation. Current in vitro models of OA are often monolayer cultured primary cells exposed to high concentrations of cytokines or chemokines, usually IL-1β or TNF-α. IL-1β could play a role in the early progression or even initiation of OA as evidenced by many of the in vitro studies. However, the inconsistent or outright lack of detectable IL-1β combined with high concentrations of the natural inhibitor IL-1Ra in the OA synovial fluid makes the idea of OA being IL-1β-driven questionable. Further, other stimulants, including IL-6 and matrix fragments, have been shown in vitro to cause many of the effects seen in OA at relevant concentrations found in the OA synovial fluid. More work with these stimulants and IL-1β-independent models needs to be done. Concurrently, research should be conducted with patients with OA as early as possible in the progression of their disease to be able to potentially identify, target, and treat the initiation of the disease.
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The degradation of chondrogenic pellets using cocultures of synovial fibroblasts and U937 cells. Biomaterials 2013; 35:1185-91. [PMID: 24225084 DOI: 10.1016/j.biomaterials.2013.10.050] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2013] [Accepted: 10/19/2013] [Indexed: 12/20/2022]
Abstract
Osteoarthritis (OA) of the knee is often characterized by joint space narrowing on X-ray, knee pain, and a loss of joint function through progressive cartilage degradation and intermittent synovial inflammation. The objective of this work was to develop an in vitro model in a clinically relevant system. Normal human synovial fibroblasts were cultured with U937 cells for 3 days then combined with a chondrogenic stem cell pellet for another 4 days. This culture system mimicked many of the aspects of early stage OA including production of cytokines and degradative enzymes, MMP-1 and MMP-3, resulting in a conditioned medium profile similar to OA synovial fluid. This catabolic environment resulted in the release of glycosaminoglycan (GAG) from the pellet. In a similar manner to early stage OA, the pellet had increased aggrecan and collagen II expression. All of these effects are hallmarks of early stage OA. This relatively simple tissue model containing a 3D cartilage component interacting with synoviocytes and macrophages could be useful to understand early causes and progression of OA. It can be scaled easily thus useful for high throughput screening of disease modifying drugs in a clinically relevant system.
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48
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Mmp17b is essential for proper neural crest cell migration in vivo. PLoS One 2013; 8:e76484. [PMID: 24098510 PMCID: PMC3788140 DOI: 10.1371/journal.pone.0076484] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Accepted: 08/27/2013] [Indexed: 11/24/2022] Open
Abstract
The extracellular matrix plays a critical role in neural crest (NC) cell migration. In this study, we characterize the contribution of the novel GPI-linked matrix metalloproteinase (MMP) zebrafish mmp17b. Mmp17b is expressed post-gastrulation in the developing NC. Morpholino inactivation of mmp17b function, or chemical inhibition of MMP activity results in aberrant NC cell migration with minimal change in NC proliferation or apoptosis. Intriguingly, a GPI anchored protein with metalloproteinase inhibitor properties, Reversion-inducing-Cysteine-rich protein with Kazal motifs (RECK), which has previously been implicated in NC development, is expressed in close apposition to NC cells expressing mmp17b, raising the possibility that these two gene products interact. Consistent with this possibility, embryos silenced for mmp17b show defective development of the dorsal root ganglia (DRG), a crest-derived structure affected in RECK mutant fish sensory deprived (sdp). Taken together, this study has identified the first pair of MMP, and their putative MMP inhibitor RECK that functions together in NC cell migration.
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49
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Rainbow R, Kwon H, Foote A, Preda R, Kaplan D, Zeng L. Muscle cell-derived factors inhibit inflammatory stimuli-induced damage in hMSC-derived chondrocytes. Osteoarthritis Cartilage 2013; 21:990-8. [PMID: 23611899 PMCID: PMC3766901 DOI: 10.1016/j.joca.2013.04.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2012] [Revised: 04/08/2013] [Accepted: 04/14/2013] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Pro-inflammatory cytokines play an important role in inducing cartilage degradation during osteoarthritis pathogenesis. Muscle is a tissue that lies near cartilage in situ. However, muscle's non-loading biochemical effect on cartilage has been largely unexplored. Here, we tested the hypothesis that muscle cells can regulate the response to pro-inflammatory cytokine-mediated damage in chondrocytes derived from human bone marrow-derived mesenchymal stem cells (hMSCs). METHOD hMSCs were allowed to undergo chondrogenic differentiation in porous silk scaffolds in the typical chondrogenic medium for 12 days. For the next 9 days, the cells were cultured in chondrogenic medium containing 50% conditioned medium derived from C2C12 muscle cells or fibroblast control cells, and were subject to treatments of pro-inflammatory cytokines IL-1β or TNFα. RESULTS Both IL-1β and TNFα-induced strong expression of multiple MMPs and hypertrophic markers Runx2 and type X collagen. Strikingly, culturing hMSC-derived chondrocytes in C2C12 muscle cell-conditioned medium strongly inhibited the expression of all these genes, a result further confirmed by GAG content and histological evaluation of matrix protein. To determine whether these effects were due to altered chondrocyte growth and survival, we assayed the expression of cell proliferation marker Ki67, cell cycle arrest markers p21 and p53, and apoptosis marker caspase 3. Muscle cell-conditioned medium promoted proliferation and inhibited apoptosis, thereby suggesting a possible decrease in the cellular aging and death that typically accompanies cartilage inflammation. CONCLUSION Our findings suggest the role of muscle in cartilage homeostasis and provide insight into designing strategies for promoting resistance to pro-inflammatory cytokines in hMSC-derived chondrocytes.
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Affiliation(s)
- R.S. Rainbow
- Department of Anatomy and Cellular Biology, Tufts University School of Medicine, 136 Harrison Avenue, Boston, MA 02111, USA
| | - H. Kwon
- Department of Anatomy and Cellular Biology, Tufts University School of Medicine, 136 Harrison Avenue, Boston, MA 02111, USA,Program in Cellular, Molecular and Developmental Biology, Sackler School of Graduate Biomedical Sciences, Tufts University, 136 Harrison Avenue, Boston, MA 02111, USA
| | - A.T. Foote
- Department of Anatomy and Cellular Biology, Tufts University School of Medicine, 136 Harrison Avenue, Boston, MA 02111, USA
| | - R.C. Preda
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA
| | - D.L. Kaplan
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA
| | - L. Zeng
- Department of Anatomy and Cellular Biology, Tufts University School of Medicine, 136 Harrison Avenue, Boston, MA 02111, USA,Program in Cellular, Molecular and Developmental Biology, Sackler School of Graduate Biomedical Sciences, Tufts University, 136 Harrison Avenue, Boston, MA 02111, USA,Department of Orthopaedic Surgery, Tufts Medical Center, 800 Washington Street, Boston, MA 02111, USA,Address correspondence and reprint requests to: L. Zeng. Department of Anatomy and Cellular Biology, Tufts University School of Medicine, 136 Harrison Avenue, Boston, MA 02111, USA. Tel: 1-617-636-2107; Fax: 1-617-636-3676. (L. Zeng)
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50
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Gabriel D, Dvir T, Kohane DS. Delivering bioactive molecules as instructive cues to engineered tissues. Expert Opin Drug Deliv 2013; 9:473-92. [PMID: 22432691 DOI: 10.1517/17425247.2012.668521] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
INTRODUCTION Growth factors and other bioactive molecules play a crucial role in the creation of functional engineered tissues from dissociated cells. AREAS COVERED This review discusses the delivery of bioactive molecules - particularly growth factors - to affect cellular function in the context of tissue engineering. We discuss the primary biological themes that are addressed by delivering bioactives, the types of molecules that are to be delivered, the major materials used in producing scaffolds and/or drug delivery systems, and the principal drug delivery strategies. EXPERT OPINION Drug delivery systems have allowed the sustained release of bioactive molecules to engineered tissues, with marked effects on tissue function. Sophisticated drug delivery techniques will allow precise recapitulation of developmental milestones by providing temporally distinct patterns of release of multiple bioactives. High-resolution patterning techniques will allow tissue constructs to be designed with precisely defined areas where bioactives can act. New biological discoveries, just as the development of small molecules with potent effects on cell differentiation, will likely have a marked impact on the field.
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Affiliation(s)
- Doris Gabriel
- Children's Hospital Boston, Harvard Medical School, Division of Critical Care Medicine, Department of Anesthesiology, Laboratory for Biomaterials and Drug Delivery, 300 Longwood Avenue, Boston, MA 02115, USA
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