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Qu Y, Ma D, Wu T, Wang H, Tian Z, Liu X, Wang Y. A multi-omics approach identifies the key role of disorders of sphingolipid metabolism in Ang II-induced hypertensive cardiomyopathy myocardial remodeling. Sci Rep 2024; 14:30379. [PMID: 39638825 PMCID: PMC11621778 DOI: 10.1038/s41598-024-81611-8] [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: 06/17/2024] [Accepted: 11/14/2024] [Indexed: 12/07/2024] Open
Abstract
Hypertension-induced myocardial remodelling encompasses both structural and functional changes in cardiac muscle tissue, such as myocardial hypertrophy, fibrosis, and inflammation. These alterations not only impair the systolic and diastolic functions of the heart but also elevate the risk of cardiovascular events and heart failure. One of the primary contributors to hypertensive cardiomyopathy (HTN-CM) is the over-activation of the renin-angiotensin-aldosterone system (RAAS), which subsequently induces myocardial remodeling. Although conventional therapeutic strategies aim to suppress RAAS and slow the progression of heart failure, the primary challenge in treating HTN-CM remains the lack of sensitive and specific biomarkers for early detection of myocardial remodelling. Combined multi-omics analyses, complemented by experimental validation, offer a systematic understanding of the landscape of gene/protein/metabolite expression in HTN-CM, revealing the underlying mechanisms of angiotensin II (Ang II)-induced myocardial remodeling in HTN-CM. Transcriptomic analysis revealed that differentially expressed genes (DEGs) are implicated in sphingolipid metabolic processes and are associated with collagen synthesis and inflammatory responses, collectively contributing to myocardial remodeling in HTN-CM. Proteomic analysis demonstrated that differentially expressed proteins (DEPs) are also involved in inflammatory and fibrotic processes, with associations to sphingolipid signaling pathways, particularly manifested through elevated expression of IL6, COL4A1, FGG, FGB, CREBBP and SPHK2 proteins. Metabolomic profiling further elucidated the increased expression of bioactive sphingolipid metabolites S1P and Sa1P in the myocardium of HTN-CM. Integrative multi-omics analysis revealed that HTN-CM is primarily influenced by the sphingolipid signaling pathway, with additional associations to the HIF-1α and FoxO signaling pathways. Correlation analysis has highlighted strong associations between sphingolipids and genes/proteins related to fibrosis and inflammation, as well as their connection to the HIF-1α and FoxO signalling pathways. Furthermore, certain key indicators were validated through ELISA and Western blot analyses in both plasma and myocardial tissue. In conclusion, the findings of this study suggest that excessive Ang II may induce abnormalities in sphingolipid metabolism, resulting in increased levels of S1P in both circulating and myocardial tissues. This elevation in S1P is implicated in myocardial inflammatory and fibrotic alterations, highlighting its pivotal role in myocardial remodeling. The specific mechanism underlying the sphingolipid signaling pathway in myocardial remodeling may involve downstream biological processes, including oxidative stress and excessive mitochondrial autophagy, mediated by HIF-1α and FoxO.
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Affiliation(s)
- Yiwei Qu
- First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, 250014, Shandong, China
| | - Dufang Ma
- First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, 250014, Shandong, China
- Department of Cardiology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, No.16369 Jingshi Road, Lixia District, Jinan, 250014, Shandong, China
| | - Tao Wu
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Huaizhe Wang
- First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, 250014, Shandong, China
| | - Zhihan Tian
- First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, 250014, Shandong, China
| | - Xue Liu
- First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, 250014, Shandong, China
| | - Yong Wang
- Department of Cardiology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, No.16369 Jingshi Road, Lixia District, Jinan, 250014, Shandong, China.
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Hussein KH, Ahmadzada B, Correa JC, Sultan A, Wilken S, Amiot B, Nyberg SL. Liver tissue engineering using decellularized scaffolds: Current progress, challenges, and opportunities. Bioact Mater 2024; 40:280-305. [PMID: 38973992 PMCID: PMC11226731 DOI: 10.1016/j.bioactmat.2024.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 05/30/2024] [Accepted: 06/01/2024] [Indexed: 07/09/2024] Open
Abstract
Liver transplantation represents the only definitive treatment for patients with end-stage liver disease. However, the shortage of liver donors provokes a dramatic gap between available grafts and patients on the waiting list. Whole liver bioengineering, an emerging field of tissue engineering, holds great potential to overcome this gap. This approach involves two main steps; the first is liver decellularization and the second is recellularization. Liver decellularization aims to remove cellular and nuclear materials from the organ, leaving behind extracellular matrices containing different structural proteins and growth factors while retaining both the vascular and biliary networks. Recellularization involves repopulating the decellularized liver with appropriate cells, theoretically from the recipient patient, to reconstruct the parenchyma, vascular tree, and biliary network. The aim of this review is to identify the major advances in decellularization and recellularization strategies and investigate obstacles for the clinical application of bioengineered liver, including immunogenicity of the designed liver extracellular matrices, the need for standardization of scaffold fabrication techniques, selection of suitable cell sources for parenchymal repopulation, vascular, and biliary tree reconstruction. In vivo transplantation models are also summarized for evaluating the functionality of bioengineered livers. Finally, the regulatory measures and future directions for confirming the safety and efficacy of bioengineered liver are also discussed. Addressing these challenges in whole liver bioengineering may offer new solutions to meet the demand for liver transplantation and improve patient outcomes.
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Affiliation(s)
- Kamal H. Hussein
- Department of Surgery, Mayo Clinic, Rochester, MN, United States
- William J. von Liebig Center for Transplantation and Clinical Regeneration, Mayo Clinic, Rochester, MN, United States
- Department of Surgery, Anesthesiology, and Radiology, College of Veterinary Medicine, Assiut University, Assiut, Egypt
| | - Boyukkhanim Ahmadzada
- Department of Surgery, Mayo Clinic, Rochester, MN, United States
- William J. von Liebig Center for Transplantation and Clinical Regeneration, Mayo Clinic, Rochester, MN, United States
| | - Julio Cisneros Correa
- Department of Surgery, Mayo Clinic, Rochester, MN, United States
- William J. von Liebig Center for Transplantation and Clinical Regeneration, Mayo Clinic, Rochester, MN, United States
| | - Ahmer Sultan
- Department of Surgery, Mayo Clinic, Rochester, MN, United States
- William J. von Liebig Center for Transplantation and Clinical Regeneration, Mayo Clinic, Rochester, MN, United States
| | - Silvana Wilken
- Department of Surgery, Mayo Clinic, Rochester, MN, United States
- William J. von Liebig Center for Transplantation and Clinical Regeneration, Mayo Clinic, Rochester, MN, United States
| | - Bruce Amiot
- Department of Surgery, Mayo Clinic, Rochester, MN, United States
- William J. von Liebig Center for Transplantation and Clinical Regeneration, Mayo Clinic, Rochester, MN, United States
| | - Scott L. Nyberg
- Department of Surgery, Mayo Clinic, Rochester, MN, United States
- William J. von Liebig Center for Transplantation and Clinical Regeneration, Mayo Clinic, Rochester, MN, United States
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3
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Patrawalla NY, Raj R, Nazar V, Kishore V. Magnetic Alignment of Collagen: Principles, Methods, Applications, and Fiber Alignment Analyses. TISSUE ENGINEERING. PART B, REVIEWS 2024; 30:405-422. [PMID: 38019048 PMCID: PMC11404687 DOI: 10.1089/ten.teb.2023.0222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2023]
Abstract
Anisotropically aligned collagen scaffolds mimic the microarchitectural properties of native tissue, possess superior mechanical properties, and provide the essential physicochemical cues to guide cell response. Biofabrication methodologies to align collagen fibers include mechanical, electrical, magnetic, and microfluidic approaches. Magnetic alignment of collagen was first published in 1983 but widespread use of this technique was hindered mainly due to the low diamagnetism of collagen molecules and the need for very strong tesla-order magnetic fields. Over the last decade, there is a renewed interest in the use of magnetic approaches that employ magnetic particles and low-level magnetic fields to align collagen fibers. In this review, the working principle, advantages, and limitations of different collagen alignment techniques with special emphasis on the magnetic alignment approach are detailed. Key findings from studies that employ high-strength magnetic fields and the magnetic particle-based approach to align collagen fibers are highlighted. In addition, the most common qualitative and quantitative image analyses methods to assess collagen alignment are discussed. Finally, current challenges and future directions are presented for further development and clinical translation of magnetically aligned collagen scaffolds.
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Affiliation(s)
- Nashaita Y Patrawalla
- Department of Biomedical Engineering and Sciences, Florida Institute of Technology, Melbourne, Florida, USA
| | - Ravi Raj
- Department of Biomedical Engineering and Sciences, Florida Institute of Technology, Melbourne, Florida, USA
| | - Vida Nazar
- Department of Bioengineering, Clemson University, Clemson, South Carolina, USA
| | - Vipuil Kishore
- Department of Chemistry and Chemical Engineering, Florida Institute of Technology, Melbourne, Florida, USA
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Chen K, Liu Y, Liu X, Guo Y, Liu J, Ding J, Zhang Z, Ni X, Chen Y. Hyaluronic acid-modified and verteporfin-loaded polylactic acid nanogels promote scarless wound healing by accelerating wound re-epithelialization and controlling scar formation. J Nanobiotechnology 2023; 21:241. [PMID: 37496007 PMCID: PMC10369727 DOI: 10.1186/s12951-023-02014-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Accepted: 07/19/2023] [Indexed: 07/28/2023] Open
Abstract
Wound healing is a common occurrence. However, delayed healing and aberrant scarring result in pathological wound healing. Accordingly, a scarless wound healing remains a significant clinical challenge. In this study, we constructed hyaluronic acid (HA)-modified and verteporfin (VP)-loaded polylactic acid (PLA) nanogels (HA/VP-PLA) to promote scarless wound healing by accelerating wound re-epithelialization and controlling scar formation. Owing to the unique structure of HA incorporating and coating in VP-loaded PLA nanoparticles, HA/VP-PLA could be topically applied on wound to achieve targeted delivery to fibroblasts. Then, HA/VP-PLA released HA and lactic acid (LA) to stimulate the proliferation and migration of fibroblasts, as well as VP to inhibit Yes-associated protein (YAP) expression and nuclear localization to suppress fibrosis. In vitro (skin fibroblasts) and in vivo (rat and rabbit models) experiments strongly suggested that HA/VP-PLA promoted scarless wound healing by accelerating wound re-epithelialization and controlling scar formation. Therefore, our work provides a feasible strategy for scarless wound healing, and the sophisticated HA/VP-PLA exhibit a great potential for clinical applications.
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Affiliation(s)
- Kun Chen
- Department of Burn and Plastic Surgery, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, 100045, China
| | - Yuanhu Liu
- Department of Otolaryngology, Head and Neck Surgery, Beijing Children' s Hospital, Capital Medical University, National Center for Children' s Health, Beijing, 100045, China
- Shunyi Maternal and Children's Hospital of Beijing Children's Hospital, Beijing, China
| | - Xiaohui Liu
- Department of Otolaryngology, Head and Neck Surgery, Beijing Children' s Hospital, Capital Medical University, National Center for Children' s Health, Beijing, 100045, China
| | - Yongli Guo
- Beijing Key Laboratory for Pediatric Diseases of Otolaryngology, Head and Neck Surgery, MOE Key Laboratory of Major Diseases in Children, Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, 100045, China
| | - Jing Liu
- Department of Burn and Plastic Surgery, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, 100045, China
| | - Jiaojiao Ding
- Department of Otolaryngology, Head and Neck Surgery, Beijing Children' s Hospital, Capital Medical University, National Center for Children' s Health, Beijing, 100045, China
| | - Zheng Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, 639 Zhizaoju Road, Shanghai, 200011, China.
| | - Xin Ni
- Department of Otolaryngology, Head and Neck Surgery, Beijing Children' s Hospital, Capital Medical University, National Center for Children' s Health, Beijing, 100045, China.
- Beijing Key Laboratory for Pediatric Diseases of Otolaryngology, Head and Neck Surgery, MOE Key Laboratory of Major Diseases in Children, Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, 100045, China.
| | - Yunsheng Chen
- Department of Burn, Shanghai Burn Institute, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025, China.
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Carr BP, Chen Z, Chung JHY, Wallace GG. Collagen Alignment via Electro-Compaction for Biofabrication Applications: A Review. Polymers (Basel) 2022; 14:4270. [PMID: 36297848 PMCID: PMC9609630 DOI: 10.3390/polym14204270] [Citation(s) in RCA: 3] [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: 09/15/2022] [Revised: 10/05/2022] [Accepted: 10/05/2022] [Indexed: 11/24/2022] Open
Abstract
As the most prevalent structural protein in the extracellular matrix, collagen has been extensively investigated for biofabrication-based applications. However, its utilisation has been impeded due to a lack of sufficient mechanical toughness and the inability of the scaffold to mimic complex natural tissues. The anisotropic alignment of collagen fibres has been proven to be an effective method to enhance its overall mechanical properties and produce biomimetic scaffolds. This review introduces the complicated scenario of collagen structure, fibril arrangement, type, function, and in addition, distribution within the body for the enhancement of collagen-based scaffolds. We describe and compare existing approaches for the alignment of collagen with a sharper focus on electro-compaction. Additionally, various effective processes to further enhance electro-compacted collagen, such as crosslinking, the addition of filler materials, and post-alignment fabrication techniques, are discussed. Finally, current challenges and future directions for the electro-compaction of collagen are presented, providing guidance for the further development of collagenous scaffolds for bioengineering and nanotechnology.
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Affiliation(s)
| | | | - Johnson H. Y. Chung
- Australian Research Council Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Gordon G. Wallace
- Australian Research Council Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, University of Wollongong, Wollongong, NSW 2522, Australia
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Design by Nature: Emerging Applications of Native Liver Extracellular Matrix for Cholangiocyte Organoid-Based Regenerative Medicine. Bioengineering (Basel) 2022; 9:bioengineering9030110. [PMID: 35324799 PMCID: PMC8945468 DOI: 10.3390/bioengineering9030110] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 02/25/2022] [Accepted: 03/04/2022] [Indexed: 12/14/2022] Open
Abstract
Organoid technology holds great promise for regenerative medicine. Recent studies show feasibility for bile duct tissue repair in humans by successfully transplanting cholangiocyte organoids in liver grafts during perfusion. Large-scale expansion of cholangiocytes is essential for extending these regenerative medicine applications. Human cholangiocyte organoids have a high and stable proliferation capacity, making them an attractive source of cholangiocytes. Commercially available basement membrane extract (BME) is used to expand the organoids. BME allows the cells to self-organize into 3D structures and stimulates cell proliferation. However, the use of BME is limiting the clinical applications of the organoids. There is a need for alternative tissue-specific and clinically relevant culture substrates capable of supporting organoid proliferation. Hydrogels prepared from decellularized and solubilized native livers are an attractive alternative for BME. These hydrogels can be used for the culture and expansion of cholangiocyte organoids in a clinically relevant manner. Moreover, the liver-derived hydrogels retain tissue-specific aspects of the extracellular microenvironment. They are composed of a complex mixture of bioactive and biodegradable extracellular matrix (ECM) components and can support the growth of various hepatobiliary cells. In this review, we provide an overview of the clinical potential of native liver ECM-based hydrogels for applications with human cholangiocyte organoids. We discuss the current limitations of BME for the clinical applications of organoids and how native ECM hydrogels can potentially overcome these problems in an effort to unlock the full regenerative clinical potential of the organoids.
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7
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Bourgot I, Primac I, Louis T, Noël A, Maquoi E. Reciprocal Interplay Between Fibrillar Collagens and Collagen-Binding Integrins: Implications in Cancer Progression and Metastasis. Front Oncol 2020; 10:1488. [PMID: 33014790 PMCID: PMC7461916 DOI: 10.3389/fonc.2020.01488] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 07/13/2020] [Indexed: 12/14/2022] Open
Abstract
Cancers are complex ecosystems composed of malignant cells embedded in an intricate microenvironment made of different non-transformed cell types and extracellular matrix (ECM) components. The tumor microenvironment is governed by constantly evolving cell-cell and cell-ECM interactions, which are now recognized as key actors in the genesis, progression and treatment of cancer lesions. The ECM is composed of a multitude of fibrous proteins, matricellular-associated proteins, and proteoglycans. This complex structure plays critical roles in cancer progression: it functions as the scaffold for tissues organization and provides biochemical and biomechanical signals that regulate key cancer hallmarks including cell growth, survival, migration, differentiation, angiogenesis, and immune response. Cells sense the biochemical and mechanical properties of the ECM through specialized transmembrane receptors that include integrins, discoidin domain receptors, and syndecans. Advanced stages of several carcinomas are characterized by a desmoplastic reaction characterized by an extensive deposition of fibrillar collagens in the microenvironment. This compact network of fibrillar collagens promotes cancer progression and metastasis, and is associated with low survival rates for cancer patients. In this review, we highlight how fibrillar collagens and their corresponding integrin receptors are modulated during cancer progression. We describe how the deposition and alignment of collagen fibers influence the tumor microenvironment and how fibrillar collagen-binding integrins expressed by cancer and stromal cells critically contribute in cancer hallmarks.
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Affiliation(s)
| | | | | | | | - Erik Maquoi
- Laboratory of Tumor and Development Biology, GIGA-Cancer, University of Liège, Liège, Belgium
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Dewle A, Pathak N, Rakshasmare P, Srivastava A. Multifarious Fabrication Approaches of Producing Aligned Collagen Scaffolds for Tissue Engineering Applications. ACS Biomater Sci Eng 2020; 6:779-797. [DOI: 10.1021/acsbiomaterials.9b01225] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Ankush Dewle
- Department of Medical Devices, National Institute of Pharmaceutical Education and Research, Opposite Air Force Station, Palaj, Gandhinagar, Gujarat 382355, India
| | - Navanit Pathak
- Department of Medical Devices, National Institute of Pharmaceutical Education and Research, Opposite Air Force Station, Palaj, Gandhinagar, Gujarat 382355, India
| | - Prakash Rakshasmare
- Department of Medical Devices, National Institute of Pharmaceutical Education and Research, Opposite Air Force Station, Palaj, Gandhinagar, Gujarat 382355, India
| | - Akshay Srivastava
- Department of Medical Devices, National Institute of Pharmaceutical Education and Research, Opposite Air Force Station, Palaj, Gandhinagar, Gujarat 382355, India
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9
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Van Gulick L, Saby C, Morjani H, Beljebbar A. Age-related changes in molecular organization of type I collagen in tendon as probed by polarized SHG and Raman microspectroscopy. Sci Rep 2019; 9:7280. [PMID: 31086263 PMCID: PMC6513820 DOI: 10.1038/s41598-019-43636-2] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 04/17/2019] [Indexed: 12/03/2022] Open
Abstract
Type I Collagen is one of the most abundant proteins of the extracellular matrix of the most organs. During chronological aging or in diseases, type I collagen undergoes biochemical and structural changes which can impact biomechanical and physiological properties of organs. In this study, we have investigated the age-related changes in the molecular organization of type I collagen in rat tails tendon using polarized Raman spectroscopy. Our results show that Amide I, amide III as well as the bands related to proline and hydroxyproline are highly sensitive to polarization and age-related. On the other hand, 1453 and 1270 cm−1 do not show any preferential orientation. Depolarization and anisotropic ratios were used to provide information about the changes in orientation of collagen fibers with aging. The anisotropy degree of Raman bands increase from adult to old collagen, indicating a higher collagen fibers alignment to the fascicle backbone axis in old tendons, and consequently a higher straightness of collagen fibers. These data were correlated to those obtained using polarized second harmonic generation technique. Polarized Raman mapping showed a more homogeneous spatial distribution of collagen fibers alignment to the fascicle axis in old tendon. This confirms a higher straightness of collagen fiber with aging.
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Affiliation(s)
- Laurence Van Gulick
- BioSpectroscopie Translationnelle (BioSpecT), EA 7506, SFR CAP-Sante FED4231, Université de Reims Champagne-Ardenne, UFR de Pharmacie, 51 rue Cognacq-Jay, 51096, Reims, cedex, France
| | - Charles Saby
- BioSpectroscopie Translationnelle (BioSpecT), EA 7506, SFR CAP-Sante FED4231, Université de Reims Champagne-Ardenne, UFR de Pharmacie, 51 rue Cognacq-Jay, 51096, Reims, cedex, France
| | - Hamid Morjani
- BioSpectroscopie Translationnelle (BioSpecT), EA 7506, SFR CAP-Sante FED4231, Université de Reims Champagne-Ardenne, UFR de Pharmacie, 51 rue Cognacq-Jay, 51096, Reims, cedex, France
| | - Abdelilah Beljebbar
- BioSpectroscopie Translationnelle (BioSpecT), EA 7506, SFR CAP-Sante FED4231, Université de Reims Champagne-Ardenne, UFR de Pharmacie, 51 rue Cognacq-Jay, 51096, Reims, cedex, France.
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10
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Unal M, Uppuganti S, Leverant CJ, Creecy A, Granke M, Voziyan P, Nyman JS. Assessing glycation-mediated changes in human cortical bone with Raman spectroscopy. JOURNAL OF BIOPHOTONICS 2018; 11:e201700352. [PMID: 29575566 PMCID: PMC6231413 DOI: 10.1002/jbio.201700352] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 03/21/2018] [Indexed: 05/13/2023]
Abstract
Establishing a non-destructive method for spatially assessing advanced glycation end-products (AGEs) is a potentially useful step toward investigating the mechanistic role of AGEs in bone quality. To test the hypothesis that the shape of the amide I in the Raman spectroscopy (RS) analysis of bone matrix changes upon AGE accumulation, we incubated paired cadaveric cortical bone in ribose or glucose solutions and in control solutions for 4 and 16 weeks, respectively, at 37°C. Acquiring 10 spectra per bone with a 20X objective and a 830 nm laser, RS was sensitive to AGE accumulation (confirmed by biochemical measurements of pentosidine and fluorescent AGEs). Hyp/Pro ratio increased upon glycation using either 0.1 M ribose, 0.5 M ribose or 0.5 M glucose. Glycation also decreased the amide I sub-peak ratios (cm-1 ) 1668/1638 and 1668/1610 when directly calculated using either second derivative spectrum or local maxima of difference spectrum, though the processing method (eg, averaged spectrum vs individual spectra) to minimize noise influenced detection of differences for the ribose-incubated bones. Glycation however did not affect these sub-peak ratios including the matrix maturity ratio (1668/1690) when calculated using indirect sub-band fitting. The amide I sub-peak ratios likely reflected changes in the collagen I structure.
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Affiliation(s)
- Mustafa Unal
- Department of Orthopaedic Surgery & Rehabilitation, Vanderbilt University Medical Center, Nashville, TN 37232
- Vanderbilt Biophotonics Center, Vanderbilt University, Nashville, TN 37232
- Center for Bone Biology, Vanderbilt University Medical Center, Nashville, TN 37232
| | - Sasidhar Uppuganti
- Department of Orthopaedic Surgery & Rehabilitation, Vanderbilt University Medical Center, Nashville, TN 37232
- Center for Bone Biology, Vanderbilt University Medical Center, Nashville, TN 37232
| | - Calen J. Leverant
- Department of Chemical & Biomolecular Engineering, Vanderbilt University, Nashville, TN 37232
| | - Amy Creecy
- Department of Orthopaedic Surgery & Rehabilitation, Vanderbilt University Medical Center, Nashville, TN 37232
- Center for Bone Biology, Vanderbilt University Medical Center, Nashville, TN 37232
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37232
| | - Mathilde Granke
- Department of Orthopaedic Surgery & Rehabilitation, Vanderbilt University Medical Center, Nashville, TN 37232
- Center for Bone Biology, Vanderbilt University Medical Center, Nashville, TN 37232
| | - Paul Voziyan
- Department of Medicine, Division of Nephrology, Vanderbilt University Medical Center, Nashville, TN 37232
| | - Jeffry S. Nyman
- Department of Orthopaedic Surgery & Rehabilitation, Vanderbilt University Medical Center, Nashville, TN 37232
- Vanderbilt Biophotonics Center, Vanderbilt University, Nashville, TN 37232
- Center for Bone Biology, Vanderbilt University Medical Center, Nashville, TN 37232
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37232
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11
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Saby C, Rammal H, Magnien K, Buache E, Brassart-Pasco S, Van-Gulick L, Jeannesson P, Maquoi E, Morjani H. Age-related modifications of type I collagen impair DDR1-induced apoptosis in non-invasive breast carcinoma cells. Cell Adh Migr 2018; 12:335-347. [PMID: 29733741 PMCID: PMC6363044 DOI: 10.1080/19336918.2018.1472182] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 03/26/2018] [Accepted: 04/26/2018] [Indexed: 10/17/2022] Open
Abstract
Type I collagen and DDR1 axis has been described to decrease cell proliferation and to initiate apoptosis in non-invasive breast carcinoma in three-dimensional cell culture matrices. Moreover, MT1-MMP down-regulates these effects. Here, we address the effect of type I collagen aging and MT1-MMP expression on cell proliferation suppression and induced-apoptosis in non-invasive MCF-7 and ZR-75-1 breast carcinoma. We provide evidence for a decrease in cell growth and an increase in apoptosis in the presence of adult collagen when compared to old collagen. This effect involves a differential activation of DDR1, as evidenced by a higher DDR1 phosphorylation level in adult collagen. In adult collagen, inhibition of DDR1 expression and kinase function induced an increase in cell growth to a level similar to that observed in old collagen. The impact of aging on the sensitivity of collagen to MT1-MMP has been reported recently. We used the MT1-MMP expression strategy to verify whether, by degrading adult type I collagen, it could lead to the same phenotype observed in old collagen 3D matrix. MT1-MMP overexpression abrogated the proliferation suppression and induced-apoptosis effects only in the presence of adult collagen. This suggests that differential collagen degradation by MT1-MMP induced a structural disorganization of adult collagen and inhibits DDR1 activation. This could in turn impair DDR1-induced cell growth suppression and apoptosis. Taken together, our data suggest that modifications of collagen structural organization, due to aging, contribute to the loss of the growth suppression and induced apoptosis effect of collagen in luminal breast carcinoma. MT1-MMP-dependent degradation and aging of collagen have no additive effects on these processes.
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Affiliation(s)
- Charles Saby
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche (UMR) 7369 Matrice Extracellulaire et Dynamique Cellulaire, Université de Reims-Champagne-Ardenne, Unité de Formation et de Recherche (UFR) Pharmacie, Reims, France
| | - Hassan Rammal
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche (UMR) 7369 Matrice Extracellulaire et Dynamique Cellulaire, Université de Reims-Champagne-Ardenne, Unité de Formation et de Recherche (UFR) Pharmacie, Reims, France
| | - Kevin Magnien
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche (UMR) 7369 Matrice Extracellulaire et Dynamique Cellulaire, Université de Reims-Champagne-Ardenne, Unité de Formation et de Recherche (UFR) Pharmacie, Reims, France
| | - Emilie Buache
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche (UMR) 7369 Matrice Extracellulaire et Dynamique Cellulaire, Université de Reims-Champagne-Ardenne, Unité de Formation et de Recherche (UFR) Pharmacie, Reims, France
| | - Sylvie Brassart-Pasco
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche (UMR) 7369 Matrice Extracellulaire et Dynamique Cellulaire, Université de Reims-Champagne-Ardenne, Unité de Formation et de Recherche (UFR) Médecine, Reims, France
| | - Laurence Van-Gulick
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche (UMR) 7369 Matrice Extracellulaire et Dynamique Cellulaire, Université de Reims-Champagne-Ardenne, Unité de Formation et de Recherche (UFR) Pharmacie, Reims, France
| | - Pierre Jeannesson
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche (UMR) 7369 Matrice Extracellulaire et Dynamique Cellulaire, Université de Reims-Champagne-Ardenne, Unité de Formation et de Recherche (UFR) Pharmacie, Reims, France
| | - Erik Maquoi
- Laboratory of Tumour and Developmental Biology, Groupe Interdisciplinaire de Génoprotéomique Appliqué (GIGA), Unit of Cancer, University of Liège, Liège, Belgium
| | - Hamid Morjani
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche (UMR) 7369 Matrice Extracellulaire et Dynamique Cellulaire, Université de Reims-Champagne-Ardenne, Unité de Formation et de Recherche (UFR) Pharmacie, Reims, France
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Static Magnetic Fields Modulate the Response of Different Oxidative Stress Markers in a Restraint Stress Model Animal. BIOMED RESEARCH INTERNATIONAL 2018; 2018:3960408. [PMID: 29888261 PMCID: PMC5977024 DOI: 10.1155/2018/3960408] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 03/29/2018] [Indexed: 12/13/2022]
Abstract
Stress is a state of vulnerable homeostasis that alters the physiological and behavioral responses. Stress induces oxidative damage in several organs including the brain, liver, kidney, stomach, and heart. Preliminary findings suggested that the magnetic stimulation could accelerate the healing processes and has been an effective complementary therapy in different pathologies. However, the mechanism of action of static magnetic fields (SMFs) is not well understood. In this study, we demonstrated the effects of static magnetic fields (0.8 mT) in a restraint stressed animal model, focusing on changes in different markers of oxidative damage. A significant increase in the plasma levels of nitric oxide (NO), malondialdehyde (MDA), and advanced oxidation protein products (AOPP), and a decrease in superoxide dismutase (SOD), glutathione (GSH), and glycation end products (AGEs) were observed in restraint stress model. Exposure to SMFs over 5 days (30, 60, and 240 min/day) caused a decrease in the NO, MDA, AGEs, and AOPP levels; in contrast, the SOD and GSH levels increased. The response to SMFs was time-dependent. Thus, we proposed that exposure to weak-intensity SMFs could offer a complementary therapy by attenuating oxidative stress. Our results provided a new perspective in health studies, particularly in the context of oxidative stress.
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13
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Vardar E, Larsson H, Allazetta S, Engelhardt E, Pinnagoda K, Vythilingam G, Hubbell J, Lutolf M, Frey P. Microfluidic production of bioactive fibrin micro-beads embedded in crosslinked collagen used as an injectable bulking agent for urinary incontinence treatment. Acta Biomater 2018; 67:156-166. [PMID: 29197579 DOI: 10.1016/j.actbio.2017.11.034] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 11/19/2017] [Accepted: 11/20/2017] [Indexed: 01/12/2023]
Abstract
Endoscopic injection of bulking agents has been widely used to treat urinary incontinence, often due to urethral sphincter complex insufficiency. The aim of the study was to develop a novel injectable bioactive collagen-fibrin bulking agent restoring long-term continence by functional muscle tissue regeneration. Fibrin micro-beads were engineered using a droplet microfluidic system. They had an average diameter of 140 μm and recombinant fibrin-binding insulin-like growth factor-1 (α2PI1-8-MMP-IGF-1) was covalently conjugated to the beads. A plasmin fibrin degradation assay showed that 72.5% of the initial amount of α2PI1-8-MMP-IGF-1 loaded into the micro-beads was retained within the fibrin micro-beads. In vitro, the growth factor modified fibrin micro-beads enhanced cell attachment and the migration of human urinary tract smooth muscle cells, however, no change of the cellular metabolic activity was seen. These bioactive micro-beads were mixed with genipin-crosslinked homogenized collagen, acting as a carrier. The collagen concentration, the degree of crosslinking, and the mechanical behavior of this bioactive collagen-fibrin injectable were comparable to reference samples. This novel injectable showed no burst release of the growth factor, had a positive effect on cell behavior and may therefore induce smooth muscle regeneration in vivo, necessary for the functional treatment of stress and other urinary incontinences. STATEMENT OF SIGNIFICANCE Urinary incontinence is involuntary urine leakage, resulting from a deficient function of the sphincter muscle complex. Yet there is no functional cure for this devastating condition using current treatment options. Applied physical and surgical therapies have limited success. In this study, a novel bioactive injectable bulking agent, triggering new muscle regeneration at the injection site, has been evaluated. This injectable consists of cross-linked collagen and fibrin micro-beads, functionalized with bound insulin-like growth factor-1 (α2PI1-8-MMP-IGF-1). These bioactive fibrin micro-beads induced human smooth muscle cell migration in vitro. Thus, this injectable bulking agent is apt to be a good candidate for regeneration of urethral sphincter muscle, ensuring a long-lasting treatment for urinary incontinence.
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Mukhey D, Phillips JB, Daniels JT, Kureshi AK. Controlling human corneal stromal stem cell contraction to mediate rapid cell and matrix organization of real architecture for 3-dimensional tissue equivalents. Acta Biomater 2018; 67:229-237. [PMID: 29208552 DOI: 10.1016/j.actbio.2017.11.047] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 11/07/2017] [Accepted: 11/28/2017] [Indexed: 12/13/2022]
Abstract
The architecture of the human corneal stroma consists of a highly organized extracellular matrix (ECM) interspersed with keratocytes. Their progenitor cells; corneal stromal stem cells (CSSC) are located at the periphery, in the limbal stroma. A highly organized corneal ECM is critical for effective transmission of light but this structure may be compromised during injury or disease, resulting in loss of vision. Re-creating normal organization in engineered tissue equivalents for transplantation often involves lengthy culture times that are inappropriate for clinical use or utilisation of synthetic substrates that bring complications such as corneal melting. CSSC have great therapeutic potential owing to their ability to reorganize a disorganized matrix, restoring transparency in scarred corneas. We examined CSSC contractile behavior to assess whether this property could be exploited to rapidly generate cell and ECM organization in Real Architecture For 3D Tissues (RAFT) tissue equivalents (TE) for transplantation. Free-floating collagen gels were characterized to assess contractile behavior of CSSC and establish optimum cell density and culture times. To mediate cell and collagen organization, tethered collagen gels seeded with CSSC were cultured and subsequently stabilized with the RAFT process. We demonstrated rapid creation of biomimetic RAFT TE with tunable structural properties. These displayed three distinct regions of varying degrees of cellular and collagen organization. Interestingly, increased organization coincided with a dramatic loss of PAX6 expression in CSSC, indicating rapid differentiation into keratocytes. The organized RAFT TE system could be a useful bioengineering tool to rapidly create an organized ECM while simultaneously controlling cell phenotype. STATEMENT OF SIGNIFICANCE For the first time, we have demonstrated that human CSSC exhibit the phenomenon of cellular self-alignment in tethered collagen gels. We found this mediated rapid co-alignment of collagen fibrils and thus subsequently exploited this property in vitro to improve the architecture of engineered RAFT tissue equivalents of the corneal stroma. Existing techniques are extremely lengthy and carry significant risk and cost for GMP manufacture. This rapid and tunable technique takes just 8 h of culture and is therefore ideal for clinical manufacture, creating biomimetic tissue equivalents with both cellular and ECM organization. Thus, cellular self-alignment can be a useful bioengineering tool for the development of organized tissue equivalents in a variety of applications.
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15
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Mirahmadi F, Koolstra JH, Lobbezoo F, van Lenthe GH, Ghazanfari S, Snabel J, Stoop R, Everts V. Mechanical stiffness of TMJ condylar cartilage increases after artificial aging by ribose. Arch Oral Biol 2017; 87:102-109. [PMID: 29275153 DOI: 10.1016/j.archoralbio.2017.12.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2017] [Revised: 11/17/2017] [Accepted: 12/12/2017] [Indexed: 12/18/2022]
Abstract
OBJECTIVE Aging is accompanied by a series of changes in mature tissues that influence their properties and functions. Collagen, as one of the main extracellular components of cartilage, becomes highly crosslinked during aging. In this study, the aim was to examine whether a correlation exists between collagen crosslinking induced by artificial aging and mechanical properties of the temporomandibular joint (TMJ) condyle. To evaluate this hypothesis, collagen crosslinks were induced using ribose incubation. METHODS Porcine TMJ condyles were incubated for 7 days with different concentrations of ribose. The compressive modulus and stiffness ratio (incubated versus control) was determined after loading. Glycosaminoglycan and collagen content, and the number of crosslinks were analyzed. Tissue structure was visualized by microscopy using different staining methods. RESULTS Concomitant with an increasing concentration of ribose, an increase of collagen crosslinks was found. The number of crosslinks increased almost 50 fold after incubation with the highest concentration of ribose. Simultaneously, the stiffness ratio of the samples showed a significant increase after incubation with the ribose. Pearson correlation analyses showed a significant positive correlation between the overall stiffness ratio and the crosslink level; the higher the number of crosslinks the higher the stiffness. CONCLUSION The present model, in which ribose was used to mimic certain aspects of age-related changes, can be employed as an in vitro model to study age-related mechanical changes in the TMJ condyle.
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Affiliation(s)
- Fereshteh Mirahmadi
- Department of Oral Cell Biology and Functional Anatomy, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam, The Netherlands; Biomechanics section, Department of Mechanical Engineering, KU Leuven, Leuven, Belgium.
| | - Jan Harm Koolstra
- Department of Oral Cell Biology and Functional Anatomy, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam, The Netherlands.
| | - Frank Lobbezoo
- Department of Oral Kinesiology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.
| | - G Harry van Lenthe
- Biomechanics section, Department of Mechanical Engineering, KU Leuven, Leuven, Belgium.
| | - Samaneh Ghazanfari
- Department of Oral Cell Biology and Functional Anatomy, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam, The Netherlands; Aachen-Maastrciht Institute for Biobased Materials, Faculty of Humanities and Sciences, Maastricht University, Maastricht, The Netherlands; Department of Orthopedic Surgery, Vrije Universiteit Medical Center, Amsterdam, The Netherlands.
| | | | - Reinout Stoop
- TNO Metabolic Health Research, Leiden, The Netherlands.
| | - Vincent Everts
- Department of Oral Cell Biology and Functional Anatomy, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam, The Netherlands.
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16
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Mosaic evolution in an asymmetrically feathered troodontid dinosaur with transitional features. Nat Commun 2017; 8:14972. [PMID: 28463233 PMCID: PMC5418581 DOI: 10.1038/ncomms14972] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2016] [Accepted: 02/16/2017] [Indexed: 11/08/2022] Open
Abstract
Asymmetrical feathers have been associated with flight capability but are also found in species that do not fly, and their appearance was a major event in feather evolution. Among non-avialan theropods, they are only known in microraptorine dromaeosaurids. Here we report a new troodontid, Jianianhualong tengi gen. et sp. nov., from the Lower Cretaceous Jehol Group of China, that has anatomical features that are transitional between long-armed basal troodontids and derived short-armed ones, shedding new light on troodontid character evolution. It indicates that troodontid feathering is similar to Archaeopteryx in having large arm and leg feathers as well as frond-like tail feathering, confirming that these feathering characteristics were widely present among basal paravians. Most significantly, the taxon has the earliest known asymmetrical troodontid feathers, suggesting that feather asymmetry was ancestral to Paraves. This taxon also displays a mosaic distribution of characters like Sinusonasus, another troodontid with transitional anatomical features. Troodontids were theropod dinosaurs closely related to birds. Here, Xu and colleagues describe a new, feathered troodontid species, Jianianhualong tengi, dating from the Lower Cretaceous period in China that provides insight into troodontid mosaic evolution and paravian feathering.
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Highlighting the impact of aging on type I collagen: label-free investigation using confocal reflectance microscopy and diffuse reflectance spectroscopy in 3D matrix model. Oncotarget 2017; 7:8546-55. [PMID: 26885896 PMCID: PMC4890986 DOI: 10.18632/oncotarget.7385] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Accepted: 01/30/2016] [Indexed: 01/26/2023] Open
Abstract
During aging, alterations of extracellular matrix proteins contribute to various pathological phenotypes. Among these alterations, type I collagen cross-linking and associated glycation products accumulation over time detrimentally affects its physico-chemical properties, leading to alterations of tissue biomechanical stability. Here, different-age collagen 3D matrices using non-destructive and label-free biophotonic techniques were analysed to highlight the impact of collagen I aging on 3D constructs, at macroscopic and microscopic levels. Matrices were prepared with collagens extracted from tail tendons of rats (newborns, young and old adults) to be within the physiological aging process. The data of diffuse reflectance spectroscopy reveal that aging leads to an inhibition of fibril assembly and a resulting decrease of gel density. Investigations by confocal reflectance microscopy highlight poor-fibrillar structures in oldest collagen networks most likely related to the glycation products accumulation. Complementarily, an infrared analysis brings out marked spectral variations in the Amide I profile, specific of the peptidic bond conformation and for carbohydrates vibrations as function of collagen-age. Interestingly, we also highlight an unexpected behavior for newborn collagen, exhibiting poorly-organized networks and microscopic features close to the oldest collagen. These results demonstrate that changes in collagen optical properties are relevant for investigating the incidence of aging in 3D matrix models.
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18
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Cichoń N, Olejnik AK, Miller E, Saluk J. The multipotent action of electromagnetic field. Biologia (Bratisl) 2016. [DOI: 10.1515/biolog-2016-0142] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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19
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Pawelec KM, Best SM, Cameron RE. Collagen: a network for regenerative medicine. J Mater Chem B 2016; 4:6484-6496. [PMID: 27928505 PMCID: PMC5123637 DOI: 10.1039/c6tb00807k] [Citation(s) in RCA: 130] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Accepted: 08/20/2016] [Indexed: 12/28/2022]
Abstract
The basic building block of the extra-cellular matrix in native tissue is collagen. As a structural protein, collagen has an inherent biocompatibility making it an ideal material for regenerative medicine. Cellular response, mediated by integrins, is dictated by the structure and chemistry of the collagen fibers. Fiber formation, via fibrillogenesis, can be controlled in vitro by several factors: pH, ionic strength, and collagen structure. After formation, fibers are stabilized via cross-linking. The final bioactivity of collagen scaffolds is a result of both processes. By considering each step of fabrication, scaffolds can be tailored for the specific needs of each tissue, improving their therapeutic potential.
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Affiliation(s)
- K M Pawelec
- University of Michigan , 2350 Hayward Ave , Ann Arbor , MI 48109 , USA
| | - S M Best
- Cambridge Centre for Medical Materials , University of Cambridge , Cambridge , CB3 0FS , UK .
| | - R E Cameron
- Cambridge Centre for Medical Materials , University of Cambridge , Cambridge , CB3 0FS , UK .
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20
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Yuen J, Hung J, Wiggermann V, Robinson SD, McCormack R, d'Entremont AG, Rauscher A. Multi-echo GRE imaging of knee cartilage. J Magn Reson Imaging 2016; 45:1502-1513. [PMID: 27564991 DOI: 10.1002/jmri.25438] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Accepted: 08/08/2016] [Indexed: 12/24/2022] Open
Abstract
PURPOSE To visualize healthy and abnormal articular cartilage, we investigated the potential of using the 3D multi-echo gradient echo (GRE) signal's magnitude and frequency and maps of T2* relaxation. MATERIALS AND METHODS After optimizing imaging parameters in five healthy volunteers, 3D multi-echo GRE magnetic resonance (MR) images were acquired at 3T in four patients with chondral damage prior to their arthroscopic surgery. Average magnitude and frequency information was extracted from the GRE images, and T2* maps were generated. Cartilage abnormalities were confirmed after arthroscopy and were graded using the Outerbridge classification scheme. Regions of interest were identified on average magnitude GRE images and compared to arthroscopy. RESULTS All four patients presented with regions of Outerbridge Grade I and II cartilage damage on arthroscopy. One patient had Grade III changes. Grade I, II, and III changes were detectable on average magnitude and T2* maps, while Grade II and higher changes were also observable on MR frequency maps. For average magnitude images of healthy volunteers, the signal-to-noise ratio of the magnitude image averaged over three echoes was 4.26 ± 0.32, 12.26 ± 1.09, 14.31 ± 1.93, and 13.36 ± 1.13 in bone, femoral, tibial, and patellar cartilage, respectively. CONCLUSION This proof-of-principle study demonstrates the feasibility of using different imaging contrasts from the 3D multi-echo GRE scan to visualize abnormalities of the articular cartilage. © 2016 International Society for Magnetic Resonance in Medicine Level of Evidence: 1 J. MAGN. RESON. IMAGING 2017;45:1502-1513.
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Affiliation(s)
- Joanna Yuen
- UBC MRI Research Centre, University of British Columbia, Vancouver, Canada.,Department of Pediatrics, University of British Columbia, Vancouver, Canada.,Department of Physics and Astronomy, University of British Columbia, Vancouver, Canada
| | - Jachin Hung
- Department of Physics and Astronomy, University of British Columbia, Vancouver, Canada
| | - Vanessa Wiggermann
- UBC MRI Research Centre, University of British Columbia, Vancouver, Canada.,Department of Pediatrics, University of British Columbia, Vancouver, Canada.,Department of Physics and Astronomy, University of British Columbia, Vancouver, Canada
| | - Simon D Robinson
- High Field Magnetic Resonance Centre, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Robert McCormack
- Department of Orthopaedics, University of British Columbia, Vancouver, Canada
| | - Agnes G d'Entremont
- Department of Mechanical Engineering, University of British Columbia, Vancouver, Canada.,Centre for Hip Health and Mobility, University of British Columbia, Vancouver, Canada.,Child and Family Research Institute, University of British Columbia, Vancouver, Canada
| | - Alexander Rauscher
- UBC MRI Research Centre, University of British Columbia, Vancouver, Canada.,Department of Pediatrics, University of British Columbia, Vancouver, Canada.,Child and Family Research Institute, University of British Columbia, Vancouver, Canada
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de Brito MC, Chopard RP, Cury DP, Watanabe IS, Mendes CE, Castelucci P. Effects of aging on the architecture of the ileocecal junction in rats. World J Gastrointest Pharmacol Ther 2016; 7:416-427. [PMID: 27602243 PMCID: PMC4986394 DOI: 10.4292/wjgpt.v7.i3.416] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2016] [Revised: 03/15/2016] [Accepted: 04/05/2016] [Indexed: 02/06/2023] Open
Abstract
AIM To evaluate the structural organization of the elastic and collagen fibers in the region of the ileocecal transition in 30 young and old male Wistar rats. METHODS Histology, immunohistochemistry (IHC), transmission electron microscopy and scanning electron microscopy were employed in this study. The results demonstrated that there was a demarcation of the ileocecal region between the ileum and the cecum in both groups. RESULTS The connective tissue fibers had different distribution patterns in the two groups. IHC revealed the presence of nitric oxide synthase, enteric neurons and smooth muscle fibers in the ileocecal junctions (ICJs) of both groups. Compared to the young group, the elderly group exhibited an increase in collagen type I fibers, a decrease in collagen type III fibers, a decreased linear density of oxytalan elastic fibers, and a greater linear density of elaunin and mature elastic fibers. CONCLUSION The results revealed changes in the patterns of distribution of collagen and elastic fibers that may lead to a possible decrease in ICJ functionality.
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22
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Saby C, Buache E, Brassart-Pasco S, El Btaouri H, Courageot MP, Van Gulick L, Garnotel R, Jeannesson P, Morjani H. Type I collagen aging impairs discoidin domain receptor 2-mediated tumor cell growth suppression. Oncotarget 2016; 7:24908-24927. [PMID: 27121132 PMCID: PMC5041879 DOI: 10.18632/oncotarget.8795] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Accepted: 04/10/2016] [Indexed: 12/26/2022] Open
Abstract
Tumor cells are confronted to a type I collagen rich environment which regulates cell proliferation and invasion. Biological aging has been associated with structural changes of type I collagen. Here, we address the effect of collagen aging on cell proliferation in a three-dimensional context (3D).We provide evidence for an inhibitory effect of adult collagen, but not of the old one, on proliferation of human fibrosarcoma HT-1080 cells. This effect involves both the activation of the tyrosine kinase Discoidin Domain Receptor 2 (DDR2) and the tyrosine phosphatase SHP-2. DDR2 and SHP-2 were less activated in old collagen. DDR2 inhibition decreased SHP-2 phosphorylation in adult collagen and increased cell proliferation to a level similar to that observed in old collagen.In the presence of old collagen, a high level of JAK2 and ERK1/2 phosphorylation was observed while expression of the cell cycle negative regulator p21CIP1 was decreased. Inhibition of DDR2 kinase function also led to an increase in ERK1/2 phosphorylation and a decrease in p21CIP1 expression. Similar signaling profile was observed when DDR2 was inhibited in adult collagen. Altogether, these data suggest that biological collagen aging could increase tumor cell proliferation by reducingthe activation of the key matrix sensor DDR2.
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Affiliation(s)
- Charles Saby
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche (UMR) Matrice Extracellulaire et Dynamique Cellulaire, Université de Reims Champagne-Ardenne, Unité de Formation et de Recherche (UFR) Pharmacie, Reims, France
| | - Emilie Buache
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche (UMR) Matrice Extracellulaire et Dynamique Cellulaire, Université de Reims Champagne-Ardenne, Unité de Formation et de Recherche (UFR) Pharmacie, Reims, France
| | - Sylvie Brassart-Pasco
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche (UMR) Matrice Extracellulaire et Dynamique Cellulaire, Université de Reims Champagne-Ardenne, Unité de Formation et de Recherche (UFR) Médecine, Reims, France
| | - Hassan El Btaouri
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche (UMR) Matrice Extracellulaire et Dynamique Cellulaire, Université de Reims Champagne-Ardenne, Unité de Formation et de Recherche (UFR) Sciences Exactes et Naturelles, Reims, France
| | - Marie-Pierre Courageot
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche (UMR) Matrice Extracellulaire et Dynamique Cellulaire, Université de Reims Champagne-Ardenne, Unité de Formation et de Recherche (UFR) Sciences Exactes et Naturelles, Reims, France
| | - Laurence Van Gulick
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche (UMR) Matrice Extracellulaire et Dynamique Cellulaire, Université de Reims Champagne-Ardenne, Unité de Formation et de Recherche (UFR) Pharmacie, Reims, France
| | - Roselyne Garnotel
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche (UMR) Matrice Extracellulaire et Dynamique Cellulaire, Université de Reims Champagne-Ardenne, Unité de Formation et de Recherche (UFR) Médecine, Reims, France
| | - Pierre Jeannesson
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche (UMR) Matrice Extracellulaire et Dynamique Cellulaire, Université de Reims Champagne-Ardenne, Unité de Formation et de Recherche (UFR) Pharmacie, Reims, France
| | - Hamid Morjani
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche (UMR) Matrice Extracellulaire et Dynamique Cellulaire, Université de Reims Champagne-Ardenne, Unité de Formation et de Recherche (UFR) Pharmacie, Reims, France
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Yallapu MM, Katti KS, Katti DR, Mishra SR, Khan S, Jaggi M, Chauhan SC. The roles of cellular nanomechanics in cancer. Med Res Rev 2014; 35:198-223. [PMID: 25137233 DOI: 10.1002/med.21329] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The biomechanical properties of cells and tissues may be instrumental in increasing our understanding of cellular behavior and cellular manifestations of diseases such as cancer. Nanomechanical properties can offer clinical translation of therapies beyond what are currently employed. Nanomechanical properties, often measured by nanoindentation methods using atomic force microscopy, may identify morphological variations, cellular binding forces, and surface adhesion behaviors that efficiently differentiate normal cells and cancer cells. The aim of this review is to examine current research involving the general use of atomic force microscopy/nanoindentation in measuring cellular nanomechanics; various factors and instrumental conditions that influence the nanomechanical properties of cells; and implementation of nanoindentation methods to distinguish cancer cells from normal cells or tissues. Applying these fundamental nanomechanical properties to current discoveries in clinical treatment may result in greater efficiency in diagnosis, treatment, and prevention of cancer, which ultimately can change the lives of patients.
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Affiliation(s)
- Murali M Yallapu
- Department of Pharmaceutical Sciences and Center for Cancer Research, College of Pharmacy, University of Tennessee Health Science Center, Memphis, Tennessee, 38163
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Wilson BA, Marshall AC, Alzayadneh EM, Chappell MC. The ins and outs of angiotensin processing within the kidney. Am J Physiol Regul Integr Comp Physiol 2014; 307:R487-9. [PMID: 24944244 DOI: 10.1152/ajpregu.00177.2014] [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] [Indexed: 01/05/2023]
Abstract
The kidney is a key target organ for bioactive components of the renin-angiotensin system (RAS); however, various renal cells such as the tubular epithelium contain an intrinsic RAS. The renal RAS can be functionally divided into ANG II-AT1 receptor and ANG-(1-7)-AT7/Mas receptor arms that functionally oppose one another. The current review considers both extracellular and intracellular pathways that potentially govern the formation and metabolism of angiotensin peptides within the renal proximal tubules.
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Affiliation(s)
- Bryan A Wilson
- Hypertension and Vascular Research Center, Wake Forest University School of Medicine, Winston-Salem, North Carolina
| | - Allyson C Marshall
- Hypertension and Vascular Research Center, Wake Forest University School of Medicine, Winston-Salem, North Carolina
| | - Ebaa M Alzayadneh
- Hypertension and Vascular Research Center, Wake Forest University School of Medicine, Winston-Salem, North Carolina
| | - Mark C Chappell
- Hypertension and Vascular Research Center, Wake Forest University School of Medicine, Winston-Salem, North Carolina
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