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Wang Z, Xie D, Li J, Zhai Z, Lu Z, Tian X, Niu Y, Zhao Q, Zheng P, Dong L, Wang C. Molecular force-induced liberation of transforming growth factor-beta remodels the spleen for ectopic liver regeneration. J Hepatol 2024; 80:753-763. [PMID: 38244845 DOI: 10.1016/j.jhep.2024.01.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 12/08/2023] [Accepted: 01/04/2024] [Indexed: 01/22/2024]
Abstract
BACKGROUND & AIMS Ectopic liver regeneration in the spleen is a promising alternative to organ transplantation for treating liver failure. To accommodate transplanted liver cells, the splenic tissue must undergo structural changes to increase extracellular matrix content, demanding a safe and efficient approach for tissue remodelling. METHODS We synthesised sulphated hyaluronic acid (sHA) with an affinity for the latent complex of transforming growth factor-β (TGF-β) and cross-linked it into a gel network (sHA-X) via click chemistry. We injected this glycan into the spleens of mice to induce splenic tissue remodelling via supraphysiological activation of endogenous TGF-β. RESULTS sHA-X efficiently bound to the abundant latent TGF-β in the spleen. It provided the molecular force to liberate the active TGF-β dimers from their latent complex, mimicking the 'bind-and-pull' mechanism required for physiological activation of TGF-β and reshaping the splenic tissue to support liver cell growth. Hepatocytes transplanted into the remodelled spleen developed into liver tissue with sufficient volume to rescue animals with a metabolic liver disorder (Fah-/- transgenic model) or following 90% hepatectomy, with no adverse effects observed and no additional drugs required. CONCLUSION Our findings highlight the efficacy and translational potential of using sHA-X to remodel a specific organ by mechanically activating one single cytokine, representing a novel strategy for the design of biomaterials-based therapies for organ regeneration. IMPACT AND IMPLICATIONS Cell transplantation may provide a lifeline to millions of patients with end-stage liver diseases, but their severely damaged livers being unable to accommodate the transplanted cells is a crucial hurdle. Herein, we report an approach to restore liver functions in another organ - the spleen - by activating one single growth factor in situ. This approach, based on a chemically designed polysaccharide that can mechanically liberate the active transforming growth factor-β to an unusually high level, promotes the function of abundant allogenic liver cells in the spleen, rescuing animals from lethal models of liver diseases and showing a high potential for clinical translation.
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Affiliation(s)
- Zhenzhen Wang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, Jiangsu 210023, China; State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau SAR, China
| | - Daping Xie
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau SAR, China
| | - Jiayi Li
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Ziyu Zhai
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Zhuojian Lu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu, 210023, China
| | - Xuejiao Tian
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Yiming Niu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau SAR, China
| | - Qi Zhao
- Department of Biomedical Sciences, Faculty of Health Science, University of Macau, Taipa, Macau SAR, China
| | - Peng Zheng
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu, 210023, China; Chemistry and Biomedicine Innovative Center, Nanjing University, Nanjing, Jiangsu 210023, China.
| | - Lei Dong
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, Jiangsu 210023, China; National Resource Center for Mutant Mice, Nanjing, Jiangsu, 210023, China; Chemistry and Biomedicine Innovative Center, Nanjing University, Nanjing, Jiangsu 210023, China.
| | - Chunming Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau SAR, China; Department of Pharmaceutical Sciences, Faculty of Health Science, University of Macau, Taipa, Macau SAR, China.
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Vieujean S, Gillard R, Delanaye P, Seidel L, Bequet E, Salée C, Meuwis MA, Massot C, Pierre N, Meunier P, Cavalier E, Louis E. Matrix gla protein, a potential marker of tissue remodelling and physiological ageing of the gut in crohn's disease. Scand J Gastroenterol 2024; 59:296-303. [PMID: 38411457 DOI: 10.1080/00365521.2023.2286913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 11/19/2023] [Indexed: 02/28/2024]
Abstract
BACKGROUND The inactive dephosphorylated and uncarboxylated form of the matrix Gla protein (dp-ucMGP) has been shown to be increased in plasma of inflammatory bowel disease (IBD) patients. Our aim was to assess if the plasmatic level of dp-ucMGP could reflect disease endoscopic activity, presence of strictures and cumulative structural bowel damage in Crohn's disease (CD) patients. METHODS The plasmatic level of dp-ucMGP was measured in a monocentric cohort of prospectively recruited patients. The analysis was done by chemiluminescent immunoassay on blood samples collected the day of a planned ileocolonoscopy. In addition to classical clinical data (gender, age, body mass index (BMI), disease duration, current treatment), endoscopic data (disease location, Crohn's Disease Endoscopic Index of Severity (CDEIS), mucosal healing (MH), presence of 9 CD lesion types) and biological markers (faecal calprotectin and C-reactive protein (CRP)) were collected. The association between dp-ucMGP level and Lémann index was also investigated. Univariate linear regression was used to investigate the relationship between dp-ucMGP level and different parameters collected. RESULTS A total of 82 ileocolonoscopies and dp-ucMGP assays were performed in 75 CD patients (45 females; 37 ileocolonic, 19 ileal and 19 colonic diseases) between October 2012 and November 2019. A total of 24 patients (29.3%) showed MH. The dp-ucMGP levels were not associated with MH, CDEIS, faecal calprotectin or CRP levels. Plasmatic dp-ucMGP levels increased significantly with age (p = 0.0032), disease duration (p = 0.0033), corticosteroids use (p = 0.019) and tended to increase in patients with intestinal strictures (p = 0.086) but not with the Lémann index. CONCLUSION The significant increase of plasmatic dp-ucMGP levels with age, disease duration and the trend observed in patients with non-ulcerated strictures may suggest that this extracellular matrix protein could be a marker of tissue remodelling and physiological ageing of the gut.
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Affiliation(s)
- Sophie Vieujean
- Hepato-Gastroenterology and Digestive Oncology, University Hospital CHU of Liège, Liège, Belgium
- Laboratory of Translational Gastroenterology, GIGA-Institute, Liège University, Liège, Belgium
| | - Romain Gillard
- Department of Radiology, University Hospital CHU of Liège, Liège, Belgium
| | - Pierre Delanaye
- Department of Dialysis-Nephrology-Transplantation, University Hospital CHU of Liège, Liège, Belgium
| | - Laurence Seidel
- Biostatistics and Medico-economic Information Department, University of Liège, Liège, Belgium
| | - Emeline Bequet
- Laboratory of Translational Gastroenterology, GIGA-Institute, Liège University, Liège, Belgium
- Division of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Citadelle Hospital and University Hospital of Liège & University of Liège, Liège, Belgium
| | - Catherine Salée
- Laboratory of Translational Gastroenterology, GIGA-Institute, Liège University, Liège, Belgium
| | - Marie-Alice Meuwis
- Hepato-Gastroenterology and Digestive Oncology, University Hospital CHU of Liège, Liège, Belgium
- Laboratory of Translational Gastroenterology, GIGA-Institute, Liège University, Liège, Belgium
| | - Charlotte Massot
- Hepato-Gastroenterology and Digestive Oncology, University Hospital CHU of Liège, Liège, Belgium
- Laboratory of Translational Gastroenterology, GIGA-Institute, Liège University, Liège, Belgium
| | - Nicolas Pierre
- Laboratory of Translational Gastroenterology, GIGA-Institute, Liège University, Liège, Belgium
| | - Paul Meunier
- Department of Radiology, University Hospital CHU of Liège, Liège, Belgium
| | - Etienne Cavalier
- Department of Clinical Chemistry, University of Liège, Liège, Belgium
| | - Edouard Louis
- Hepato-Gastroenterology and Digestive Oncology, University Hospital CHU of Liège, Liège, Belgium
- Laboratory of Translational Gastroenterology, GIGA-Institute, Liège University, Liège, Belgium
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Yanuar A, Agustina H, Budhiparama NC, Atik N. Prospect of Exosome in Ligament Healing: A Systematical Review. Stem Cells Cloning 2023; 16:91-101. [PMID: 38162837 PMCID: PMC10757805 DOI: 10.2147/sccaa.s438023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 12/13/2023] [Indexed: 01/03/2024] Open
Abstract
Aim The relationship between ligaments and bone is a complex and heterogeneous junction involving bone, mineralized fibro cartilage, non-mineralized fibro cartilage and ligaments. Mesenchymal stem cells (MSC) can be used in vivo to control inflammation and aid in tissue repair, according to studies. This review focused on using exosomes as an alternative to MSC, as a cell-free therapy for modulating the remodelling process. Methods To conduct a systematic review of the literature, the phrases "exosome" and "ligament" or "tendon" and "extracellular vesicle" and "stem cells" were used as the search keywords in PubMed (MEDLINE), OVID, the Cochrane Library, and Science Direct. From the literature, 73 studies in all were found. Six studies were included in this systematic review after full-text evaluation. Results Six included studies covered a range of MSC types, isolation techniques, animal models, and interventions. Biomechanical results consistently indicated the beneficial impact of conditioned media, vesicles, and exosomes on treating tendons and ligaments. Noteworthy findings were the reduction of inflammation by iMSC-IEVs, chondrocyte protection by iPSC-EVs (extracellular vesicles generated by inflammation-primed adipose-derived stem cells), osteolysis treatment using DPSC-sEVs (small extracellular vesicles derived from dental pulp stem cells), and the contribution of exosome-educated macrophages to ligament injury wound healing. Conclusion Exosomes may serve as a cell-free therapeutic substitute for modulating the remodelling process, particularly in ligament healing.
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Affiliation(s)
- Andre Yanuar
- Doctoral Program, Faculty of Medicine, Padjadjaran University, Bandung, West Java, Indonesia
- Department of Orthopaedic and Traumatology, Santo Borromeus Hospital, Bandung, West Java, Indonesia
| | - Hasrayati Agustina
- Department of Pathology Anatomy, Faculty of Medicine, Universitas Padjadjaran/Dr. Hasan Sadikin General Hospital, Bandung, West Java, Indonesia
| | - Nicolaas C Budhiparama
- Department of Orthopaedic and Traumatology, Faculty of Medicine, Airlangga University, Surabaya, East Java, Indonesia
- Department of Orthopaedics, Leiden University Medical Centre, Leiden, the Netherlands
| | - Nur Atik
- Department of Biomedical Sciences, Faculty of Medicine, Padjadjaran University, Bandung, West Java, Indonesia
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Paping A, Basler C, Ehrlich L, Fasting C, Melchior K, Ziska T, Thiele M, Duda GN, Timm S, Ochs M, Rancourt RC, Henrich W, Braun T. Uterine scars after caesarean delivery: From histology to the molecular and ultrastructural level. Wound Repair Regen 2023; 31:752-763. [PMID: 37955528 DOI: 10.1111/wrr.13127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 09/28/2023] [Accepted: 11/01/2023] [Indexed: 11/14/2023]
Abstract
Uterine rupture during a trial of labor after caesarean delivery (CD) is a serious complication for mother and fetus. The lack of knowledge on histological features and molecular pathways of uterine wound healing has hindered research in this area from evolving over time. We analysed collagen content and turnover in uterine scars on a histological, molecular and ultrastructural level. Therefore, tissue samples from the lower uterine segment were obtained during CD from 16 pregnant women with at least one previous CD, from 16 pregnant women without previous CD, and from 16 non-pregnant premenopausal women after hysterectomy for a benign disease. Histomorphometrical collagen quantification showed, that the collagen content of the scar area in uterine wall specimens after previous CD was significantly higher than in the unscarred myometrium of the same women and the control groups. Quantitative real-time PCR of uterine scar tissue from FFPE samples delineated by laser microdissection yielded a significantly higher COL3A1 expression and a significantly lower COL1A2/COL3A1 ratio in scarred uteri than in samples from unscarred uteri. Histological collagen content and the expression of COL1A2 and COL3A1 were positively correlated, while COL1A2/COL3A1 ratio was negatively correlated with the histological collagen content. Transmission electron microscopy revealed a destroyed myometrial ultrastructure in uterine scars with increased collagen density. We conclude that the high collagen content in uterine scars results from an ongoing overexpression of collagen I and III. This is a proof of concept to enable further analyses of specific factors that mediate uterine wound healing.
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Affiliation(s)
- Alexander Paping
- Department of Obstetrics, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- Division of Experimental Obstetrics, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Clara Basler
- Division of Experimental Obstetrics, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Loreen Ehrlich
- Division of Experimental Obstetrics, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Carlo Fasting
- Institut für Chemie und Biochemie, Freie Universität Berlin, Berlin, Germany
| | - Kerstin Melchior
- Division of Experimental Obstetrics, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Thomas Ziska
- Division of Experimental Obstetrics, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Mario Thiele
- Julius Wolff Institute and Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Georg N Duda
- Julius Wolff Institute and Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Sara Timm
- Core Facility Electron Microscopy, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Matthias Ochs
- Core Facility Electron Microscopy, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- Institute of Functional Anatomy, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Rebecca C Rancourt
- Division of Experimental Obstetrics, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Wolfgang Henrich
- Department of Obstetrics, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Thorsten Braun
- Department of Obstetrics, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- Division of Experimental Obstetrics, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
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Lee KS, Shin SY, Hämmerle CHF, Jung UW, Lim HC, Thoma DS. Dimensional ridge changes in conjunction with four implant timing protocols and two types of soft tissue grafts: A pilot pre-clinical study. J Clin Periodontol 2022; 49:401-411. [PMID: 35066942 DOI: 10.1111/jcpe.13594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 01/12/2022] [Accepted: 01/17/2022] [Indexed: 11/25/2022]
Abstract
AIM To determine the effect of (1) implant placement timing and (2) the type of soft tissue graft in terms of ridge profile changes. MATERIALS AND METHODS Four implant treatment modalities were applied in the mesial root areas of the third and fourth mandibular premolars of 10 mongrel dogs alongside connective-tissue graft (CTG) and volume-stable cross-linked collagen matrix (VCMX): immediate, early, and delayed placement (DP), and DP following alveolar ridge preservation (ARP). All dogs were sacrificed 3 months after soft tissue augmentation. Standard Tessellation Language files from designated time points were analysed. RESULTS Compared with the pre-extraction situation, the median width of the ridge demontstrated a linear increase only in group ARP/CTG (0.07 mm at the 2-mm level), whereas all other groups showed a reduction (between -1.87 and -0.09 mm, p > .05). Groups ARP/CTG (0.17 mm) and DP/CTG (0.05 mm) exhibited a profilometric tissue gain in a set region of interest (p > .05). The net effect of CTG and VCMX ranged from 0.14 to 0.79 mm. CONCLUSIONS Dimensional ridge changes varied between treatment protocols. ARP with CTG led to the smallest difference in ridge profile between the pre-extraction and the study end time point. Both CTG and VCMX enhanced the ridge contour.
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Affiliation(s)
- Kwang-Seok Lee
- Department of Periodontology, Periodontal-Implant Clinical Research Institute, Kyung Hee University, School of Dentistry, Seoul, Republic of Korea
| | - Seung-Yun Shin
- Department of Periodontology, Periodontal-Implant Clinical Research Institute, Kyung Hee University, School of Dentistry, Seoul, Republic of Korea
| | - Christoph H F Hämmerle
- Clinic of Reconstructive Dentistry, Center of Dental Medicine, University of Zurich, Zurich, Switzerland
| | - Ui-Won Jung
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Republic of Korea
| | - Hyun-Chang Lim
- Department of Periodontology, Periodontal-Implant Clinical Research Institute, Kyung Hee University, School of Dentistry, Seoul, Republic of Korea.,Clinic of Reconstructive Dentistry, Center of Dental Medicine, University of Zurich, Zurich, Switzerland
| | - Daniel S Thoma
- Clinic of Reconstructive Dentistry, Center of Dental Medicine, University of Zurich, Zurich, Switzerland
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Yao Q, Shi Y, Xia X, Tang Y, Jiang X, Zheng YW, Zhang H, Chen R, Kou L. Bioadhesive hydrogel comprising bilirubin/β-cyclodextrin inclusion complexes promote diabetic wound healing. Pharm Biol 2021; 59:1139-1149. [PMID: 34425063 PMCID: PMC8386728 DOI: 10.1080/13880209.2021.1964543] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
CONTEXT Chronic non-healing diabetic wound therapy is an important clinical challenge. Manipulating the release of bioactive factors from an adhesive hydrogel is an effective approach to repair chronic wounds. As an endogenous antioxidant, bilirubin (BR) has been shown to promote wound healing. Nonetheless, its application is limited by its low water solubility and oxidative degradation. OBJECTIVE This study developed a bilirubin-based formulation for diabetic wound healing. MATERIALS AND METHODS Bilirubin was incorporated into β-CD-based inclusion complex (BR/β-CD) which was then loaded into a bioadhesive hydrogel matrix (BR/β-CD/SGP). Scratch wound assays were performed to examine the in vitro pro-healing activity of BR/β-CD/SGP (25 μg/mL of BR). Wounds of diabetic or non-diabetic rats were covered with BR or BR/β-CD/SGP hydrogels (1 mg/mL of BR) and changed every day for a period of 7 or 21 days. Histological assays were conducted to evaluate the in vivo effect of BR/β-CD/SGP. RESULTS Compared to untreated (18.7%) and BR (55.2%) groups, wound closure was more pronounced (65.0%) in BR/β-CD/SGP group. In diabetic rats, the wound length in BR/β-CD/SGP group was smaller throughout the experimental period than untreated groups. Moreover, BR/β-CD/SGP decreased TNF-α levels to 7.7% on day 3, and elevated collagen deposition and VEGF expression to 11.9- and 8.2-fold on day 14. The therapeutic effects of BR/β-CD/SGP were much better than those of the BR group. Similar observations were made in the non-diabetic model. DISCUSSION AND CONCLUSION BR/β-CD/SGP promotes wound healing and tissue remodelling in both diabetic and non-diabetic rats, indicating an ideal wound-dressing agent.
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Affiliation(s)
- Qing Yao
- Department of Pharmacy, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, China
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Yannan Shi
- Department of Pharmacy, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, China
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Xing Xia
- Department of Pharmacy, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yingying Tang
- Department of Pharmacy, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xue Jiang
- Central Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Ya-Wen Zheng
- Central Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Hailin Zhang
- Department of Pharmacy, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, China
- Department of Children’s Respiration Disease, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, China
| | - Ruijie Chen
- Department of Pharmacy, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, China
- Ruijie Chen 109 Xueyuan West Road, Wenzhou325027, China
| | - Longfa Kou
- Department of Pharmacy, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, China
- CONTACT Longfa Kou
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Abstract
Cellular senescence is a highly complex and programmed cellular state with diverse and, at times, conflicting physiological and pathological roles across the lifespan of an organism. Initially considered a cell culture artifact, senescence evolved from an age-related circumstance to an intricate cellular defense mechanism in response to stress, implicated in a wide spectrum of biological processes like tissue remodelling, injury and cancer. The development of new tools to study senescence in vivo paved the way to uncover its functional roles in various frameworks, which are sometimes hard to reconcile. Here, we review the functional impact of senescent cells on different organismal contexts. We provide updated insights on the role of senescent cells in tissue repair and regeneration, in which they essentially modulate the levels of fibrosis and inflammation, discussing how "time" seems to be the key maestro of their effects. Finally, we overview the current clinical research landscape to target senescent cells and contemplate its repercussions on this fast-evolving field.
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Affiliation(s)
- Diogo Paramos-de-Carvalho
- Instituto de Medicina Molecular - João Lobo Antunes, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal.,CEDOC, NOVA Medical School, Faculdade de Ciências Médicas da Universidade Nova de Lisboa, Lisbon, Portugal
| | - Antonio Jacinto
- CEDOC, NOVA Medical School, Faculdade de Ciências Médicas da Universidade Nova de Lisboa, Lisbon, Portugal
| | - Leonor Saúde
- Instituto de Medicina Molecular - João Lobo Antunes e Instituto de Histologia e Biologia do Desenvolvimento, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal
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8
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Cass SP, Mekhael O, Thayaparan D, McGrath JJC, Revill SD, Fantauzzi MF, Wang P, Reihani A, Hayat AI, Stevenson CS, Dvorkin-Gheva A, Botelho FM, Stämpfli MR, Ask K. Increased Monocyte-Derived CD11b + Macrophage Subpopulations Following Cigarette Smoke Exposure Are Associated With Impaired Bleomycin-Induced Tissue Remodelling. Front Immunol 2021; 12:740330. [PMID: 34603325 PMCID: PMC8481926 DOI: 10.3389/fimmu.2021.740330] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 08/30/2021] [Indexed: 01/16/2023] Open
Abstract
Rationale The accumulation of macrophages in the airways and the pulmonary interstitium is a hallmark of cigarette smoke-associated inflammation. Notably, pulmonary macrophages are not a homogenous population but consist of several subpopulations. To date, the manner in which cigarette smoke exposure affects the relative composition and functional capacity of macrophage subpopulations has not been elucidated. Methods Using a whole-body cigarette smoke exposure system, we investigated the impact of cigarette smoke on macrophage subpopulations in C57BL/6 mice using flow cytometry-based approaches. Moreover, we used bromodeoxyuridine labelling plus Il1a-/- and Il1r1-/- mice to assess the relative contribution of local proliferation and monocyte recruitment to macrophage accumulation. To assess the functional consequences of altered macrophage subpopulations, we used a model of concurrent bleomycin-induced lung injury and cigarette smoke exposure to examine tissue remodelling processes. Main Results Cigarette smoke exposure altered the composition of pulmonary macrophages increasing CD11b+ subpopulations including monocyte-derived alveolar macrophages (Mo-AM) as well as interstitial macrophages (IM)1, -2 and -3. The increase in CD11b+ subpopulations was observed at multiple cigarette smoke exposure timepoints. Bromodeoxyuridine labelling and studies in Il1a-/- mice demonstrated that increased Mo-AM and IM3 turnover in the lungs of cigarette smoke-exposed mice was IL-1α dependent. Compositional changes in macrophage subpopulations were associated with impaired induction of fibrogenesis including decreased α-smooth muscle actin positive cells following intratracheal bleomycin treatment. Mechanistically, in vivo and ex vivo assays demonstrated predominant macrophage M1 polarisation and reduced matrix metallopeptidase 9 activity in cigarette smoke-exposed mice. Conclusion Cigarette smoke exposure modified the composition of pulmonary macrophage by expanding CD11b+ subpopulations. These compositional changes were associated with attenuated fibrogenesis, as well as predominant M1 polarisation and decreased fibrotic activity. Overall, these data suggest that cigarette smoke exposure altered the composition of pulmonary macrophage subpopulations contributing to impaired tissue remodelling.
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Affiliation(s)
- Steven P Cass
- Medical Sciences Graduate Program, McMaster University, Hamilton, ON, Canada
| | - Olivia Mekhael
- Medical Sciences Graduate Program, McMaster University, Hamilton, ON, Canada
| | - Danya Thayaparan
- Medical Sciences Graduate Program, McMaster University, Hamilton, ON, Canada
| | - Joshua J C McGrath
- Medical Sciences Graduate Program, McMaster University, Hamilton, ON, Canada
| | - Spencer D Revill
- Medical Sciences Graduate Program, McMaster University, Hamilton, ON, Canada.,Department of Medicine, Firestone Institute for Respiratory Health, McMaster University and The Research Institute of St. Joe's Hamilton, Hamilton, ON, Canada
| | - Matthew F Fantauzzi
- Medical Sciences Graduate Program, McMaster University, Hamilton, ON, Canada
| | - Peiyao Wang
- Department Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Amir Reihani
- Department of Medicine, Firestone Institute for Respiratory Health, McMaster University and The Research Institute of St. Joe's Hamilton, Hamilton, ON, Canada
| | - Aaron I Hayat
- Medical Sciences Graduate Program, McMaster University, Hamilton, ON, Canada
| | - Christopher S Stevenson
- Janssen Disease Interception Accelerator, Janssen Pharmaceutical Companies of Johnson and Johnson, Raritan, NJ, United States
| | - Anna Dvorkin-Gheva
- Department of Medicine, McMaster Immunology Research Centre, McMaster University, Hamilton, ON, Canada
| | - Fernando M Botelho
- Department of Medicine, McMaster Immunology Research Centre, McMaster University, Hamilton, ON, Canada
| | - Martin R Stämpfli
- Department of Medicine, Firestone Institute for Respiratory Health, McMaster University and The Research Institute of St. Joe's Hamilton, Hamilton, ON, Canada.,Department of Medicine, McMaster Immunology Research Centre, McMaster University, Hamilton, ON, Canada
| | - Kjetil Ask
- Department of Medicine, Firestone Institute for Respiratory Health, McMaster University and The Research Institute of St. Joe's Hamilton, Hamilton, ON, Canada.,Department of Medicine, McMaster Immunology Research Centre, McMaster University, Hamilton, ON, Canada
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9
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Sun C, Janjic Rankovic M, Folwaczny M, Otto S, Wichelhaus A, Baumert U. Effect of Tension on Human Periodontal Ligament Cells: Systematic Review and Network Analysis. Front Bioeng Biotechnol 2021; 9:695053. [PMID: 34513810 PMCID: PMC8429507 DOI: 10.3389/fbioe.2021.695053] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 08/10/2021] [Indexed: 01/09/2023] Open
Abstract
Orthodontic tooth movement is based on the remodeling of tooth-surrounding tissues in response to mechanical stimuli. During this process, human periodontal ligament cells (hPDLCs) play a central role in mechanosensing and mechanotransduction. Various in vitro models have been introduced to investigate the effect of tension on hPDLCs. They provide a valuable body of knowledge on how tension influences relevant genes, proteins, and metabolites. However, no systematic review summarizing these findings has been conducted so far. Aim of this systematic review was to identify all related in vitro studies reporting tension application on hPDLCs and summarize their findings regarding force parameters, including magnitude, frequency and duration. Expression data of genes, proteins, and metabolites was extracted and summarized. Studies' risk of bias was assessed using tailored risk of bias tools. Signaling pathways were identified by protein-protein interaction (PPI) networks using STRING and GeneAnalytics. According to our results, Flexcell Strain Unit® and other silicone-plate or elastic membrane-based apparatuses were mainly adopted. Frequencies of 0.1 and 0.5 Hz were predominantly applied for dynamic equibiaxial and uniaxial tension, respectively. Magnitudes of 10 and 12% were mostly employed for dynamic tension and 2.5% for static tension. The 10 most commonly investigated genes, proteins and metabolites identified, were mainly involved in osteogenesis, osteoclastogenesis or inflammation. Gene-set enrichment analysis and PPI networks gave deeper insight into the involved signaling pathways. This review represents a brief summary of the massive body of knowledge in this field, and will also provide suggestions for future researches on this topic.
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Affiliation(s)
- Changyun Sun
- Department of Orthodontics and Dentofacial Orthopedics, University Hospital, LMU Munich, Munich, Germany
| | - Mila Janjic Rankovic
- Department of Orthodontics and Dentofacial Orthopedics, University Hospital, LMU Munich, Munich, Germany
| | - Matthias Folwaczny
- Department of Conservative Dentistry and Periodontology, University Hospital, LMU Munich, Munich, Germany
| | - Sven Otto
- Department of Oral and Maxillofacial Plastic Surgery, Martin-Luther-University Halle-Wittenberg, Halle (Saale), Germany
| | - Andrea Wichelhaus
- Department of Orthodontics and Dentofacial Orthopedics, University Hospital, LMU Munich, Munich, Germany
| | - Uwe Baumert
- Department of Orthodontics and Dentofacial Orthopedics, University Hospital, LMU Munich, Munich, Germany
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10
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Sheykhhasan M, Seifalian A. Plasma-Rich in Growth Factor and its Clinical Application. Curr Stem Cell Res Ther 2021; 16:730-744. [PMID: 33494683 DOI: 10.2174/1574888x16666210120101600] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 11/26/2020] [Accepted: 12/03/2020] [Indexed: 02/08/2023]
Abstract
The potential use of growth factors in stem cell-based therapies for the repair and regeneration of tissues and organs offers a paradigm shift in regenerative medicine. Growth factors are critical signalling molecules that play an important role in tissue development and remodelling. Plasma rich in growth factor (PRGF) is a biotechnological strategy for the harvesting of the active substances of platelets, including growth factors, from the patient's blood. Because of their tremendous essential growth factor and bioactive agents, as well as their paracrine mechanisms, PRGF has been used as an efficacious option and adjuvant biological therapy in the repair and replacement of damaged organs. This article provides an overview of PRGF extraction and its properties and critically reviewed its clinical benefit and clinical trials in the treatment and regeneration of human organs. Regenerative medicine is a multi-billion-dollar industry with huge interest to clinicians, academics and industries, being considered as an emerging technology.
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Affiliation(s)
- Mohsen Sheykhhasan
- Research Centre for Molecular Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Amelia Seifalian
- University College London Medical School (UCL), London, UK; 4Watford General Hospital, Watford, United Kingdom
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11
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Howsmon DP, Rego BV, Castillero E, Ayoub S, Khalighi AH, Gorman RC, Gorman JH, Ferrari G, Sacks MS. Mitral valve leaflet response to ischaemic mitral regurgitation: from gene expression to tissue remodelling. J R Soc Interface 2020; 17:20200098. [PMID: 32370692 PMCID: PMC7276554 DOI: 10.1098/rsif.2020.0098] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 04/07/2020] [Indexed: 02/06/2023] Open
Abstract
Ischaemic mitral regurgitation (IMR), a frequent complication following myocardial infarction (MI), leads to higher mortality and poor clinical prognosis if untreated. Accumulating evidence suggests that mitral valve (MV) leaflets actively remodel post MI, and this remodelling increases both the severity of IMR and the occurrence of MV repair failures. However, the mechanisms of extracellular matrix maintenance and modulation by MV interstitial cells (MVICs) and their impact on MV leaflet tissue integrity and repair failure remain largely unknown. Herein, we sought to elucidate the multiscale behaviour of IMR-induced MV remodelling using an established ovine model. Leaflet tissue at eight weeks post MI exhibited significant permanent plastic radial deformation, eliminating mechanical anisotropy, accompanied by altered leaflet composition. Interestingly, no changes in effective collagen fibre modulus were observed, with MVICs slightly rounder, at eight weeks post MI. RNA sequencing indicated that YAP-induced genes were elevated at four weeks post MI, indicating elevated mechanotransduction. Genes related to extracellular matrix organization were downregulated at four weeks post MI when IMR occurred. Transcriptomic changes returned to baseline by eight weeks post MI. This multiscale study suggests that IMR induces plastic deformation of the MV with no functional damage to the collagen fibres, providing crucial information for computational simulations of the MV in IMR.
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Affiliation(s)
- Daniel P. Howsmon
- James T. Willerson Center for Cardiovascular Modeling and Simulation, Oden Institute for Computational Engineering and Sciences and the Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Bruno V. Rego
- James T. Willerson Center for Cardiovascular Modeling and Simulation, Oden Institute for Computational Engineering and Sciences and the Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Estibaliz Castillero
- Department of Surgery, Columbia University Irving Medical Center, New York, NY, USA
| | - Salma Ayoub
- James T. Willerson Center for Cardiovascular Modeling and Simulation, Oden Institute for Computational Engineering and Sciences and the Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Amir H. Khalighi
- James T. Willerson Center for Cardiovascular Modeling and Simulation, Oden Institute for Computational Engineering and Sciences and the Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Robert C. Gorman
- Gorman Cardiovascular Research Group, Smilow Center for Translational Research, Department of Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Joseph H. Gorman
- Gorman Cardiovascular Research Group, Smilow Center for Translational Research, Department of Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Giovanni Ferrari
- Department of Surgery, Columbia University Irving Medical Center, New York, NY, USA
| | - Michael S. Sacks
- James T. Willerson Center for Cardiovascular Modeling and Simulation, Oden Institute for Computational Engineering and Sciences and the Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA
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12
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Zhao Y, Zhu H, Yang Y, Ye Y, Yao Y, Huang X, Zhang Y, Shu X, Chen X, Yang Y, Ma J, Cheng L, Wang X, Ying Y. AQP1 suppression by ATF4 triggers trabecular meshwork tissue remodelling in ET-1-induced POAG. J Cell Mol Med 2020; 24:3469-3480. [PMID: 32052937 PMCID: PMC7131939 DOI: 10.1111/jcmm.15032] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 12/03/2019] [Accepted: 01/13/2020] [Indexed: 12/14/2022] Open
Abstract
Primary open‐angle glaucoma (POAG) is the second leading cause of irreversible blindness worldwide. Increased endothelin‐1 (ET‐1) has been observed in aqueous humour (AH) of POAG patients, resulting in an increase in the out‐flow resistance of the AH. However, the underlining mechanisms remain elusive. Using established in vivo and in vitro POAG models, we demonstrated that water channel Aquaporin 1 (AQP1) is down‐regulated in trabecular meshwork (TM) cells upon ET‐1 exposure, which causes a series of glaucomatous changes, including actin fibre reorganization, collagen production, extracellular matrix deposition and contractility alteration of TM cells. Ectopic expression of AQP1 can reverse ET‐1‐induced TM tissue remodelling, which requires the presence of β‐catenin. More importantly, we found that ET‐1‐induced AQP1 suppression is mediated by ATF4, a transcription factor of the unfolded protein response, which binds to the promoter of AQP1 and negatively regulates AQP1 transcription. Thus, we discovered a novel function of ATF4 in controlling the process of TM remodelling in ET‐1‐induced POAG through transcription suppression of AQP1. Our findings also detail a novel pathological mechanism and a potential therapeutic target for POAG.
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Affiliation(s)
- Yingying Zhao
- Department of Physiology, School of Basic Medical Sciences, School of Medicine, Shenzhen University, Shenzhen, China
| | - Huazhang Zhu
- Department of Physiology, School of Basic Medical Sciences, School of Medicine, Shenzhen University, Shenzhen, China
| | - Yangfan Yang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, China
| | - Yiming Ye
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, China
| | - Youli Yao
- Department of Physiology, School of Basic Medical Sciences, School of Medicine, Shenzhen University, Shenzhen, China
| | - Xiaoyan Huang
- Department of Physiology, School of Basic Medical Sciences, School of Medicine, Shenzhen University, Shenzhen, China
| | - Yixiang Zhang
- Department of Urology, Shenzhen People's Hospital, The Second Affiliated Hospital of Jinan University, Shenzhen, China
| | - Xingsheng Shu
- Department of Physiology, School of Basic Medical Sciences, School of Medicine, Shenzhen University, Shenzhen, China
| | - Xianxiong Chen
- Department of Physiology, School of Basic Medical Sciences, School of Medicine, Shenzhen University, Shenzhen, China
| | - Yatao Yang
- School of information engineering, Shenzhen University, Shenzhen, China
| | - Junxian Ma
- School of information engineering, Shenzhen University, Shenzhen, China
| | - Le Cheng
- BGI-Yunnan, BGI-Shenzhen, Kunming, China
| | - Xiaomei Wang
- Department of Physiology, School of Basic Medical Sciences, School of Medicine, Shenzhen University, Shenzhen, China
| | - Ying Ying
- Department of Physiology, School of Basic Medical Sciences, School of Medicine, Shenzhen University, Shenzhen, China
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13
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Reiterer M, Branco CM. Endothelial cells and organ function: applications and implications of understanding unique and reciprocal remodelling. FEBS J 2019; 287:1088-1100. [PMID: 31736207 PMCID: PMC7155104 DOI: 10.1111/febs.15143] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 10/21/2019] [Accepted: 11/15/2019] [Indexed: 12/16/2022]
Abstract
The microvasculature is a heterogeneous, dynamic and versatile component of the systemic circulation, with a unique ability to locally self-regulate and to respond to organ demand and environmental stimuli. Endothelial cells from different organs display considerable variation, but it is currently unclear to what extent functional properties of organ-specific endothelial cells are intrinsic, acquired and/or reprogrammable. Vascular function is a fundamental pillar of homeostasis, and dysfunction results in systemic consequences for the organism. Additionally, vascular failure can occur downstream of organ disease or environmental stress, often driving an exacerbation of symptoms and pathologies originally independent of the local circulation. The understanding of the molecular mechanisms underlying endothelial physiology and metabolism holds the promise to inform and improve diagnosis, prognosis and treatment options for a myriad of conditions as unrelated as cancer, neurodegeneration or pulmonary hypertension, and likely everything in between, if we consider that also treatments for such conditions are primarily distributed via the bloodstream. However, studying endothelial function has its challenges: the origin, isolation, culture conditions and preconditioning stimuli make this an extremely variable cell type to study and difficult to source. Animal models exist but are neither trivial to generate, nor necessarily adequately translatable to human disease. In this article, we aim to illustrate the breadth of microvascular functions in different environments, highlighting current and pioneering studies that have advanced our insight into the importance of the integrity of this tissue, as well as the limitations posed by its heterogeneity and plasticity.
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Affiliation(s)
- Moritz Reiterer
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, UK.,Department of Physiology, Development and Neuroscience, University of Cambridge, UK
| | - Cristina M Branco
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, UK
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14
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Sawadkar P, Player D, Bozec L, Mudera V. The mechanobiology of tendon fibroblasts under static and uniaxial cyclic load in a 3D tissue engineered model mimicking native extracellular matrix. J Tissue Eng Regen Med 2019; 14:135-146. [PMID: 31622052 DOI: 10.1002/term.2975] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Revised: 08/29/2019] [Accepted: 09/26/2019] [Indexed: 01/05/2023]
Abstract
Tendon mechanobiology plays a vital role in tendon repair and regeneration; however, this mechanism is currently poorly understood. We tested the role of different mechanical loads on extracellular matrix (ECM) remodelling gene expression and the morphology of tendon fibroblasts in collagen hydrogels, designed to mimic native tissue. Hydrogels were subjected to precise static or uniaxial loading patterns of known magnitudes and sampled to analyse gene expression of known mechano-responsive ECM-associated genes (Collagen I, Collagen III, Tenomodulin, and TGF-β). Tendon fibroblast cytomechanics was studied under load by using a tension culture force monitor, with immunofluorescence and immunohistological staining used to examine cell morphology. Tendon fibroblasts subjected to cyclic load showed that endogenous matrix tension was maintained, with significant concomitant upregulation of ECM remodelling genes, Collagen I, Collagen III, Tenomodulin, and TGF-β when compared with static load and control samples. These data indicate that tendon fibroblasts acutely adapt to the mechanical forces placed upon them, transmitting forces across the ECM without losing mechanical dynamism. This model demonstrates cell-material (ECM) interaction and remodelling in preclinical a platform, which can be used as a screening tool to understand tendon regeneration.
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Affiliation(s)
- Prasad Sawadkar
- Division of Surgery and interventional Science, UCL Stanmore campus, London, UK
| | - Darren Player
- Division of Surgery and interventional Science, UCL Stanmore campus, London, UK
| | - Laurent Bozec
- Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, London, UK
| | - Vivek Mudera
- Division of Surgery and interventional Science, UCL Stanmore campus, London, UK
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15
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Govaere O, Cockell S, Van Haele M, Wouters J, Van Delm W, Van den Eynde K, Bianchi A, van Eijsden R, Van Steenbergen W, Monbaliu D, Nevens F, Roskams T. High-throughput sequencing identifies aetiology-dependent differences in ductular reaction in human chronic liver disease. J Pathol 2019; 248:66-76. [PMID: 30584802 DOI: 10.1002/path.5228] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 11/27/2018] [Accepted: 12/23/2018] [Indexed: 12/15/2022]
Abstract
Ductular reaction (DR) represents the activation of hepatic progenitor cells (HPCs) and has been associated with features of advanced chronic liver disease; yet it is not clear whether these cells contribute to disease progression and how the composition of their micro-environment differs depending on the aetiology. This study aimed to identify HPC-associated signalling pathways relevant in different chronic liver diseases using a high-throughput sequencing approach. DR/HPCs were isolated using laser microdissection from patient samples diagnosed with HCV or primary sclerosing cholangitis (PSC), as models for hepatocellular or biliary regeneration. Key signals were validated at the protein level for a cohort of 56 patients (20 early and 36 advanced stage). In total, 330 genes were significantly differentially expressed between the HPCs in HCV and PSC. Recruitment and homing of inflammatory cells were distinctly different depending on the aetiology. HPCs in PSC were characterised by a response to oxidative stress (e.g. JUN, VNN1) and neutrophil-attractant chemokines (CXCL5, CXCL6, IL-8), whereas HPCs in HCV were identified by T- and B-lymphocyte infiltration. Moreover, we found that communication between HPCs and macrophages was aetiology driven. In PSC, a high frequency of CCL28-positive macrophages was observed in the portal infiltrate, already in early disease in the absence of advanced fibrosis, while in HCV, HPCs showed a strong expression of the macrophage scavenger receptor MARCO. Interestingly, DR/HPCs in PSC showed more deposition of ECM (e.g. FN1, LAMC2, collagens) compared to HCV, where an increase of pro-invasive genes (e.g. PDGFRA, IGF2) was observed. Additionally, endothelial cells in the vicinity of DR/HPCs showed differential immunopositivity (e.g. IGF2 and INHBA expression). In conclusion, our data shine light on the role of DR/HPCs in immune signalling, fibrogenesis and angiogenesis in chronic liver disease. Copyright © 2018 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
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Affiliation(s)
- Olivier Govaere
- Department of Imaging and Pathology, KU Leuven and University Hospitals Leuven, Leuven, Belgium.,Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Simon Cockell
- Bioinformatics Support Unit, Newcastle University, Newcastle upon Tyne, UK
| | - Matthias Van Haele
- Department of Imaging and Pathology, KU Leuven and University Hospitals Leuven, Leuven, Belgium
| | - Jasper Wouters
- VIB Center for Brain and Disease Research, KU Leuven, Leuven, Belgium.,Department of Human Genetics, KU Leuven, Leuven, Belgium
| | | | - Kathleen Van den Eynde
- Department of Imaging and Pathology, KU Leuven and University Hospitals Leuven, Leuven, Belgium
| | - Arianna Bianchi
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | | | | | - Diethard Monbaliu
- Department of Abdominal Transplant Surgery, KU Leuven and University Hospitals Leuven, Leuven, Belgium
| | - Frederik Nevens
- Department of Hepatology, KU Leuven and University Hospitals Leuven, Leuven, Belgium
| | - Tania Roskams
- Department of Imaging and Pathology, KU Leuven and University Hospitals Leuven, Leuven, Belgium
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16
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Działo E, Tkacz K, Błyszczuk P. Crosstalk between the TGF-β and WNT signalling pathways during cardiac fibrogenesis. Acta Biochim Pol 2018; 65:341-349. [PMID: 30040870 DOI: 10.18388/abp.2018_2635] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Revised: 06/09/2018] [Accepted: 06/22/2018] [Indexed: 11/10/2022]
Abstract
Cardiac fibrosis is referred to as an excessive accumulation of stromal cells and extracellular matrix proteins in the myocardium. Progressive fibrosis causes stiffening of the cardiac tissue and affects conduction of electrical impulses, leading to heart failures in a broad range of cardiac conditions. At the cellular level, activation of the cardiac stromal cells and myofibroblast formation are considered as hallmarks of fibrogenesis. At the molecular level, transforming growth factor β (TGF-β) is traditionally considered as a master regulator of the profibrotic processes. More recently, the WNT signalling pathway has also been found to be implicated in the development of myocardial fibrosis. In this review, we summarize current knowledge on the involvement of TGF-β and WNT downstream molecular pathways to cardiac fibrogenesis and describe a crosstalk between these two profibrotic pathways. TGF-β and WNT ligands bind to different receptors and trigger various outputs. However, a growing body of evidence points to cross-regulation between these two pathways. It has been recognized that in cardiac pathologies TGF-β activates WNT/β-catenin signalling, which in turn stabilizes the TGF-β/Smad response. Furthermore both, the non-canonical TGF-β and non-canonical WNT signalling pathways, activate the same mitogen-activated protein kinases (MAPKs): the extracellular signal-regulated kinase (Erk), the c-Jun N-terminal kinases (JNKs) and p38. The crosstalk between TGF-β and WNT pathways seems to play an essential role in switching on the genetic machinery initiating profibrotic changes in the heart. Better understanding of these mechanisms will open new opportunities for development of targeted therapeutic approaches against cardiac fibrosis in the future.
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Affiliation(s)
- Edyta Działo
- Department of Clinical Immunology, Jagiellonian University Medical College, Kraków, Poland
| | - Karolina Tkacz
- Department of Clinical Immunology, Jagiellonian University Medical College, Kraków, Poland
| | - Przemysław Błyszczuk
- Department of Clinical Immunology, Jagiellonian University Medical College, Kraków, Poland
- Center of Experimental Rheumatology, Department of Rheumatology, University Hospital Zürich, Switzerland
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17
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Marino M, Pontrelli G, Vairo G, Wriggers P. A chemo-mechano-biological formulation for the effects of biochemical alterations on arterial mechanics: the role of molecular transport and multiscale tissue remodelling. J R Soc Interface 2018; 14:rsif.2017.0615. [PMID: 29118114 DOI: 10.1098/rsif.2017.0615] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Accepted: 10/11/2017] [Indexed: 12/21/2022] Open
Abstract
This paper presents a chemo-mechano-biological framework for arterial physiopathology. The model accounts for the fine remodelling in the multiscale hierarchical arrangement of tissue constituents and for the diffusion of molecular species involved in cell-cell signalling pathways. Effects in terms of alterations in arterial compliance are obtained. A simple instructive example is introduced. Although oversimplified with respect to realistic case studies, the proposed application mimics the biochemical activity of matrix metalloproteinases, transforming growth factors beta and interleukins on tissue remodelling. Effects of macrophage infiltration, of intimal thickening and of a healing phase are investigated, highlighting the corresponding influence on arterial compliance. The obtained results show that the present approach is able to capture changes in arterial mechanics as a consequence of the alterations in tissue biochemical environment and cellular activity, as well as to incorporate the protective role of both autoimmune responses and pharmacological treatments.
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Affiliation(s)
- Michele Marino
- Institut für Kontinuumsmechanik, Leibniz Universität Hannover, Hannover, Germany
| | - Giuseppe Pontrelli
- Istituto per le Applicazioni del Calcolo, National Research Council (CNR), Rome, Italy
| | - Giuseppe Vairo
- Dipartimento di Ingegneria Civile e Ingegneria Informatica, Università degli Studi di Roma 'Tor Vergata', Rome, Italy
| | - Peter Wriggers
- Institut für Kontinuumsmechanik, Leibniz Universität Hannover, Hannover, Germany
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18
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Sutherland TE. Chitinase-like proteins as regulators of innate immunity and tissue repair: helpful lessons for asthma? Biochem Soc Trans 2018; 46:141-51. [PMID: 29351964 DOI: 10.1042/BST20170108] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 11/17/2017] [Accepted: 11/23/2017] [Indexed: 12/19/2022]
Abstract
Chitinases and chitinase-like proteins (CLPs) belong to the glycoside hydrolase family 18 of proteins. Chitinases are expressed in mammals and lower organisms, facilitate chitin degradation, and hence act as host-defence enzymes. Gene duplication and loss-of-function mutations of enzymatically active chitinases have resulted in the expression of a diverse range of CLPs across different species. CLPs are genes that are increasingly associated with inflammation and tissue remodelling not only in mammals but also across distant species. While the focus has remained on understanding the functions and expression patterns of CLPs during disease in humans, studies in mouse and lower organisms have revealed important and overlapping roles of the CLP family during physiology, host defence and pathology. This review will summarise recent insights into the regulatory functions of CLPs on innate immune pathways and discuss how these effects are not only important for host defence and tissue injury/repair after pathogen invasion, but also how they have extensive implications for pathological processes involved in diseases such as asthma.
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19
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Sanches BDA, Maldarine JS, Zani BC, Tamarindo GH, Biancardi MF, Santos FCA, Rahal P, Góes RM, Felisbino SL, Vilamaior PSL, Taboga SR. Telocytes play a key role in prostate tissue organisation during the gland morphogenesis. J Cell Mol Med 2017; 21:3309-3321. [PMID: 28840644 PMCID: PMC5706570 DOI: 10.1111/jcmm.13234] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Accepted: 04/15/2017] [Indexed: 01/19/2023] Open
Abstract
Telocytes are CD34-positive interstitial cells, known to exert several functions, one of which is a role in tissue organisation, previously demonstrated by telocytes in the myocardium. The existence of telocytes in the prostate has recently been reported, however, there is a lack of information regarding the function of these cells in prostate tissue, and information regarding the possible role of these cells in prostatic development. This study used immunofluorescence techniques in prostate tissue and prostatic telocytes in culture to determine the relationship between telocytes and prostate morphogenesis. Furthermore, immunofluorescent labelling of telocytes was performed on prostate tissue at different stages of early postnatal development. Initially, CD34-positive cells are found at the periphery of the developing alveoli, later in the same region, c-kit-positive cells and cells positive for both factors are verified and CD34-positive cells were predominantly observed in the interalveolar stroma and the region surrounding the periductal smooth muscle. Fluorescence assays also demonstrated that telocytes secrete TGF-β1 and are ER-Beta (ERβ) positive. The results suggest that telocytes play a changing role during development, initially supporting the differentiation of periductal and perialveolar smooth muscle, and later, producing dense networks that separate alveoli groups and form a barrier between the interalveolar region and periurethral smooth muscle. We conclude that telocytes play a relevant role in prostate tissue organisation during postnatal development.
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Affiliation(s)
- Bruno D A Sanches
- Department of Structural and Functional Biology, State University of Campinas, Campinas, São Paulo, Brazil
| | - Juliana S Maldarine
- Department of Biology, Univ. Estadual Paulista (UNESP), São José do Rio Preto, São Paulo, Brazil
| | - Bruno C Zani
- Department of Biology, Univ. Estadual Paulista (UNESP), São José do Rio Preto, São Paulo, Brazil
| | - Guilherme H Tamarindo
- Department of Structural and Functional Biology, State University of Campinas, Campinas, São Paulo, Brazil
| | - Manoel F Biancardi
- Department of Histology, Embryology and Cell Biology, Federal University of Goiás, Goiânia, Goiás, Brazil
| | - Fernanda C A Santos
- Department of Histology, Embryology and Cell Biology, Federal University of Goiás, Goiânia, Goiás, Brazil
| | - Paula Rahal
- Department of Biology, Univ. Estadual Paulista (UNESP), São José do Rio Preto, São Paulo, Brazil
| | - Rejane M Góes
- Department of Biology, Univ. Estadual Paulista (UNESP), São José do Rio Preto, São Paulo, Brazil
| | - Sérgio L Felisbino
- Department of Morphology, Institute of Biology (IB), Univ. Estadual Paulista - UNESP, Botucatu, São Paulo, Brazil
| | - Patricia S L Vilamaior
- Department of Biology, Univ. Estadual Paulista (UNESP), São José do Rio Preto, São Paulo, Brazil
| | - Sebastião R Taboga
- Department of Biology, Univ. Estadual Paulista (UNESP), São José do Rio Preto, São Paulo, Brazil
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20
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Vaquette C, Sudheesh Kumar PT, Petcu EB, Ivanovski S. Combining electrospinning and cell sheet technology for the development of a multiscale tissue engineered ligament construct (TELC). J Biomed Mater Res B Appl Biomater 2017; 106:399-409. [PMID: 28170157 DOI: 10.1002/jbm.b.33828] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Revised: 11/17/2016] [Accepted: 11/26/2016] [Indexed: 12/20/2022]
Abstract
Ligament tissue rupture is a common sport injury. Although current treatment modalities can achieve appropriate reconstruction of the damaged ligament, they present significant drawbacks, mostly related to reduced tissue availability and pain associated with tissue harvesting. Stem cell based tissue regeneration combined with electrospun scaffolds represents a novel treatment method for torn ligaments. In this study, a low fiber density polycaprolactone (PCL) electrospun mesh and sheep mesenchymal stem cells (sMSCs) were used to develop tissue engineered ligament construct (TELC) in vitro. The assembly of the TELC was based on the spontaneous capacity of the cells to organize themselves into a cell sheet once seeded onto the electrospun mesh. The cell sheet matured over 4 weeks and strongly integrated with the low fiber density electrospun mesh which was subsequently processed into a ligament-like bundle and braided with two other bundles to develop the final construct. Live/dead assay revealed that the handling of the construct through the various phases of assembly did not cause significant difference in viability compared to the control. Mechanical evaluation demonstrated that the incorporation of the cell sheet into the braided construct resulted in significantly modifying the mechanical behavior. A stress/displacement J-curve was observed for the TELC that was similar to native ligament, whereas this particular feature was not observed in the non-cellularized specimens. The regenerative potential of the TELC was evaluated ectopically in immunocompromized rats, compared to non cellularized electrospun fiber mesh and this demonstrated that the TELC was well colonized by host cells and that a significant remodelling of the implanted construct was observed. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 399-409, 2018.
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Affiliation(s)
| | - P T Sudheesh Kumar
- Menzies Health Institute Queensland, Griffith University, Gold Coast, Queensland, 4222, Australia
| | - Eugen Bogdan Petcu
- Menzies Health Institute Queensland, Griffith University, Gold Coast, Queensland, 4222, Australia.,School of Medicine, Griffith University, Gold Coast, Queensland, 4222, Australia
| | - Saso Ivanovski
- Menzies Health Institute Queensland, Griffith University, Gold Coast, Queensland, 4222, Australia
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21
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Abstract
OBJECTIVE The aim of this study was to evaluate in vitro and in vivo the efficacy of GBT013, a collagen-based dressing, for the treatment of chronic wounds, in a db/db mouse model of diabetes. METHOD Macroscopic and histologic analyses of db/db mice wound healing with GBT013 or saline gauze were assessed. The mRNA expression and the proliferation of dermal fibroblast were investigated. Matrix metalloproteinases (MMP)-2 and MMP-9 activities were quantified. RESULTS In db/db mice, GBT013 improves wound epithelialisation when compared with saline gauze. Histological analysis of scar tissue also shows an enhancement of remodelling associated with no sign of acute inflammation. In addition, GBT013 significantly decreases interleukin (IL)-6 and IL-8, significantly increases tissue inhibitors of metalloproteinases (TIMP)-1 and TIMP-2 fibroblast mRNA expression and significantly reduces in vitro MMP-2 and MMP-9 enzymatic activities. Moreover, GBT013 allows cell growth inside the matrix and stimulates proliferation of human dermal fibroblast. CONCLUSION By contributing to restore MMPs/TIMPs balance, GBT013 may function in all key stages of wound healing, such as inflammation, proliferation and tissue remodelling, and ultimately may provide a favourable environment for skin repair. DECLARATION OF INTEREST This work was supported by Genbiotech, the R&D subsidiary of Laboratoires Genévrier, a pharmaceutical company.
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Affiliation(s)
- Y Guillemin
- Department of Research and Development, Genbiotech, 06600 Antibes, France
| | - D Le Broc
- Department of Research and Development, Genbiotech, 06600 Antibes, France
| | - C Ségalen
- Department of Research and Development, Genbiotech, 06600 Antibes, France
| | - E Kurkdjian
- Department of Research and Development, Genbiotech, 06600 Antibes, France
| | - J N Gouze
- Department of Research and Development, Genbiotech, 06600 Antibes, France
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22
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Di Nisio C, De Colli M, di Giacomo V, Rapino M, Di Valerio V, Marconi GD, Gallorini M, Di Giulio M, Cataldi A, Zara S. A dual role for β1 integrin in an in vitro Streptococcus mitis/human gingival fibroblasts co-culture model in response to TEGDMA. Int Endod J 2014; 48:839-49. [PMID: 25231818 DOI: 10.1111/iej.12379] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Accepted: 09/13/2014] [Indexed: 01/11/2023]
Abstract
AIM To evaluate the effect of TEGDMA on human gingival fibroblasts (HGFs) in vitro co-cultured with Streptococcus mitis, focusing on the signalling pathways underlying cell tissue remodelling and inflammatory response processes. METHODOLOGY β1 integrin expression was evaluated by means of imaging flow cytometry. The Western blot technique was used to investigate the expression of protein kinase C (PKC), extracellular signal-regulated kinase (ERK), matrix metalloproteinase 9 (MMP9) and 3 (MMP3). RT-PCR was performed to quantify nuclear factor-kb subunits (Nf-kb1, ReLa), IkB kinase β (IkBkB), cyclooxygenase II (COX-2) and tumour necrosis factor-α (TNF-α) mRNA levels. Statistical analysis was performed using the analysis of variance (anova). RESULTS When HGFs are co-cultured with S. mitis, β1 integrin intensity, phosphorylated PKC (p-PKC), activated ERK (p-ERK), IkBkB mRNA level and MMP9 expression increased (for all molecules P < 0.05 HGFs versus HGFs co-cultured with S. mitis). A higher level of MMP3 in HGFs treated with TEGDMA was recorded (P < 0.05 HGFs versus HGFs exposed to TEGDMA). COX-2 inflammatory factor mRNA level appeared higher in HGFs exposed to 1 mmol L(-1) TEGDMA (P < 0.01 HGFs versus HGFs exposed to TEGDMA), whereas TNF-α gene expression was higher in HGFs co-cultured with S. mitis (P < 0.05 HGFs versus HGFs co-cultured with S. mitis). CONCLUSIONS β1 integrin triggered the signalling pathway, transduced by p-PKCα and involving ERK 1 and 2 and MMPs. This pathway resulted in an unbalanced equilibrium in tissue remodelling process, along with inflammatory response when HGFs are exposed to bacteria or biomaterial alone. On the contrary, the TEGDMA/S. mitis combination restored the balance between extracellular matrix deposition and degradation and prevented an inflammatory response.
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Affiliation(s)
- C Di Nisio
- Department of Pharmacy, University "G. d'Annunzio" Chieti-Pescara, Chieti, Italy
| | - M De Colli
- Department of Pharmacy, University "G. d'Annunzio" Chieti-Pescara, Chieti, Italy
| | - V di Giacomo
- Department of Pharmacy, University "G. d'Annunzio" Chieti-Pescara, Chieti, Italy
| | - M Rapino
- Unit of Chieti, Institute of Molecular Genetics CNR, Chieti, Italy
| | - V Di Valerio
- Department of Medicine and Aging Sciences, University "G. d'Annunzio" Chieti-Pescara, Chieti, Italy
| | - G D Marconi
- Department of Pharmacy, University "G. d'Annunzio" Chieti-Pescara, Chieti, Italy
| | - M Gallorini
- Department of Pharmacy, University "G. d'Annunzio" Chieti-Pescara, Chieti, Italy
| | - M Di Giulio
- Department of Pharmacy, University "G. d'Annunzio" Chieti-Pescara, Chieti, Italy
| | - A Cataldi
- Department of Pharmacy, University "G. d'Annunzio" Chieti-Pescara, Chieti, Italy
| | - S Zara
- Department of Pharmacy, University "G. d'Annunzio" Chieti-Pescara, Chieti, Italy
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Nowocin AK, Southgate A, Gabe SM, Ansari T. Biocompatibility and potential of decellularized porcine small intestine to support cellular attachment and growth. J Tissue Eng Regen Med 2013; 10:E23-33. [PMID: 23894134 DOI: 10.1002/term.1750] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2012] [Revised: 01/22/2013] [Accepted: 03/19/2013] [Indexed: 01/16/2023]
Abstract
The aim of this study was to decellularize a 30 cm long segment of porcine small intestine, determine its in vivo behaviour and assess the type of immunological reaction it induces in a quantitative manner. A segment of porcine ileum up to 30 cm long, together with its attached vasculature, was decellularized via its mesenteric arcade as a single entity. The quality of the acellular scaffold was assessed histologically and using molecular tools. The host response to the scaffold was evaluated in a rodent model. Stereological techniques were incorporated into quantitative analysis of the phenotype of the macrophages infiltrating the scaffold in vivo. Lengths of ileal scaffold, together with its attached vasculature, were successfully decellularized, with no evidence of intact cells and DNA or collagen and GAGs overdegradation. Analysis of explants harvested over 2 months postimplantation revealed full-thickness recellularization and no signs of foreign body or immune reactions. Macrophage profiling proved that between weeks 4 and 8 in vivo there was a switch from an M1 (pro-inflammatory) to an M2 (pro-remodelling) type of response. We show here that the decellularization process results in a biocompatible and non-toxic matrix that upon implantation triggers cellular infiltration and angiogenesis, primarily characterized by a pro-remodelling type of mononuclear response, without inducing foreign body reaction or fibrosis.
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Leung BM, Miyagi Y, Li RK, Sefton MV. Fate of modular cardiac tissue constructs in a syngeneic rat model. J Tissue Eng Regen Med 2013; 9:1247-58. [PMID: 23505249 DOI: 10.1002/term.1724] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2012] [Revised: 10/15/2012] [Accepted: 01/10/2013] [Indexed: 11/12/2022]
Abstract
Modular cardiac tissues developed both vascular and cardiac structures in vivo, provided that the host response was attenuated by omitting xenoproteins from the modules. Collagen gel modules (with Matrigel(TM)) containing cardiomyocytes (CMs) alone or CMs with surface-seeded endothelial cells (ECs; CM/EC modules) were injected into the peri-infarct zone of the heart in syngeneic Lewis rats. After 3 weeks, donor ECs developed into blood vessel-like structures that also contained erythrocytes. However, no donor CMs were found within the implant sites, presumably because host cells including macrophages and T cells infiltrated extensively into the injection sites. To lessen the host response, Matrigel was omitted from the matrix and the modules were rinsed with serum-free medium prior to implantation. Host cell infiltration was attenuated, resulting in a higher degree of vascularization with CM/EC modules than with CM modules without ECs. Most importantly, donor CMs matured into striated muscle-like structures in Matrigel-free implants.
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Affiliation(s)
- Brendan M Leung
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Ontario, Canada
| | - Yasuo Miyagi
- Toronto General Research Institute, Division of Cardiovascular Surgery, University Health Network and University of Toronto, Ontario, Canada
| | - Ren-Ke Li
- Toronto General Research Institute, Division of Cardiovascular Surgery, University Health Network and University of Toronto, Ontario, Canada.,Divison of Experimental Therapeutics, Toronto General Research Institute (TGRI), Ontario, Canada
| | - Michael V Sefton
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Ontario, Canada.,Department of Chemical Engineering and Applied Chemistry, University of Toronto, Ontario, Canada
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25
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Prodanov L, van Loon JJWA, te Riet J, Jansen JA, Walboomers XF. Nanostructured substrate conformation can decrease osteoblast-like cell dysfunction in simulated microgravity conditions. J Tissue Eng Regen Med 2012; 8:978-88. [PMID: 22941788 DOI: 10.1002/term.1600] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2012] [Accepted: 07/23/2012] [Indexed: 01/26/2023]
Abstract
Cells in situ are surrounded with defined structural elements formed by the nanomolecular extracellular matrix (ECM), and at the same time subjected to different mechanical stimuli arising from variety of physiological processes. In this study, using a nanotextured substrate mimicking the structural elements of the ECM and simulated microgravity, we wanted to develop a multifactorial model and understand better what guides cells in determining the morphological cell response. In our set-up, bone precursor cells from rat bone marrow were isolated and cultured on nanotextured polystyrene substrate (pitch 200 nm, depth 50 nm). Simulated microgravity was applied to the cells, using a random positioning machine (RPM). The results demonstrated that cells cultured on nanotextured substrate align parallel to the grooves and re-align significantly, but not completely, when subjected to simulated microgravity. The nanotextured substrate increased cell number and alkaline phosphatase (ALP) activity, whereas simulated microgravity decreased cells number and ALP activity. When the nanotextured substrate and simulated microgravity were combined together, the negative effect of the simulated microgravity ALP and cell number was reversed. In conclusion, absence of mechanical load in simulated microgravity has a negative effect on initial osteoblastogenesis, and nanotextured surfaces can partly reverse such a process.
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Affiliation(s)
- Ljupcho Prodanov
- Department of Biomaterials, Radboud University Nijmegen Medical Centre, The Netherlands
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26
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Ethayathulla AS, Srivastava DB, Kumar J, Saravanan K, Bilgrami S, Sharma S, Kaur P, Srinivasan A, Singh TP. Structure of the buffalo secretory signalling glycoprotein at 2.8 A resolution. Acta Crystallogr Sect F Struct Biol Cryst Commun 2007; 63:258-65. [PMID: 17401190 PMCID: PMC2330205 DOI: 10.1107/s1744309107010445] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2007] [Accepted: 03/05/2007] [Indexed: 05/14/2023]
Abstract
The crystal structure of a 40 kDa signalling glycoprotein from buffalo (SPB-40) has been determined at 2.8 A resolution. SPB-40 acts as a protective signalling factor by binding to viable cells during the early phase of involution, during which extensive tissue remodelling occurs. It was isolated from the dry secretions of Murrah buffalo. It was purified and crystallized using the hanging-drop vapour-diffusion method with 19% ethanol as the precipitant. The protein was also cloned and its complete nucleotide and amino-acid sequences were determined. When compared with the sequences of other members of the family, the sequence of SPB-40 revealed two very important mutations in the sugar-binding region, in which Tyr120 changed to Trp120 and Glu269 changed to Trp269. The structure showed a significant distortion in the shape of the sugar-binding groove. The water structure in the groove is also drastically altered. The folding of the protein chain in the flexible region comprising segments His188-His197, Phe202-Arg212 and Tyr244-Pro260 shows large variations when compared with other proteins of the family.
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Affiliation(s)
- Abdul S. Ethayathulla
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Devendra B. Srivastava
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Janesh Kumar
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Kolandaivelu Saravanan
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Sameeta Bilgrami
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Sujata Sharma
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Punit Kaur
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Alagiri Srinivasan
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Tej P. Singh
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi 110029, India
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Nair S, Lee YH, Rousseau E, Cam M, Tataranni PA, Baier LJ, Bogardus C, Permana PA. Increased expression of inflammation-related genes in cultured preadipocytes/stromal vascular cells from obese compared with non-obese Pima Indians. Diabetologia 2005; 48:1784-8. [PMID: 16034612 PMCID: PMC1409821 DOI: 10.1007/s00125-005-1868-2] [Citation(s) in RCA: 86] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2004] [Accepted: 04/28/2005] [Indexed: 01/04/2023]
Abstract
AIMS/HYPOTHESIS The specific contributions made by the various cell types in adipose tissue to obesity, particularly obesity-related inflammation, need to be clarified. The aim of this study was to elucidate the potential role of adipocyte precursor cells (preadipocytes/stromal vascular cells [SVC]). METHODS We performed Affymetrix oligonucleotide microarray expression profiling of cultured abdominal subcutaneous preadipocytes/SVC isolated from the adipose tissue of 14 non-obese (BMI 25+/-4 kg/m2) and 14 obese (55+/-8 kg/m2) non-diabetic Pima Indian subjects. Quantitative real-time PCR (RT-PCR) was used to verify the differential expression of several genes in an independent group of subjects. RESULTS We identified 218 differentially expressed genes with p values less than 0.01. Microarray expression profiling revealed that the expression of inflammation-related genes was significantly upregulated in preadipocytes/SVC of obese individuals. Quantitative RT-PCR confirmed the upregulation of IL8, CTSS, ITGB2, HLA-DRA, CD53, PLA2G7 and MMP9 in preadipocytes/SVC of obese subjects. CONCLUSIONS/INTERPRETATION The upregulation of inflammation-related genes in preadipocytes/SVC of obese subjects may increase the recruitment of immune cells into adipose tissue and may also result in changes in the extracellular matrix (tissue remodelling) to accommodate adipose tissue expansion in obesity.
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Affiliation(s)
- S Nair
- Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Phoenix, AZ 85016, USA.
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28
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Okona-Mensah KB, Shittu E, Page C, Costello J, Kilfeather SA. Inhibition of serum and transforming growth factor beta (TGF-beta1)-induced DNA synthesis in confluent airway smooth muscle by heparin. Br J Pharmacol 1998; 125:599-606. [PMID: 9831891 PMCID: PMC1571029 DOI: 10.1038/sj.bjp.0702046] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
1. Airway remodelling occurs in asthma and involves an increase in airway smooth muscle mass through cell proliferation and hypertrophy. Increased eosinophil density in the airways is a feature of asthma. Eosinophils exhibiting activation in the airways of asthmatics also exhibit increased expression of transforming growth factor beta (TGF-beta1). We have examined the capacity of TGF-beta1 and epidermal growth factor (EGF) to influence airway smooth muscle division and the effect of heparin on TGF-beta1. EGF and serum-induced smooth muscle DNA synthesis in confluent airway smooth muscle cells (ASMC) as an indication of entry into S phase preceding mitogenesis. 2. ASMC were obtained from cell populations growing out from explanted bovine trachealis muscle sections. Cell division was monitored in sparse plated cells by direct cell counting following nuclear staining. Cell DNA synthesis in confluent cells was monitored by uptake of [3H]-thymidine. 3. TGF-beta1 (100 microM) inhibited FBS (10%)-induced smooth muscle division in sparsely plated cells (40%). TGF-beta1 (100 pM) increased cell DNA synthesis (200%) in confluent cells in the presence of bovine serum albumin (BSA, 0.25%). EGF (0.7 nM) also increased airway smooth muscle DNA synthesis (69%) in the presence of BSA (0.25%). The facilitatory effect of TGF-beta1 was observed between 1-100 pM, while that of EGF was observed between 20 200 pM. 4. Heparin inhibited serum and TGF-beta1-induced DNA synthesis in confluent ASMC (55%), consistent with our previous observation of inhibition of division in sparsely populated ASMC (Kilfeather et al., 1995a). This action of heparin was observed between concentrations of 1-100 microg ml(-1). Heparin did not inhibit DNA synthesis in response to EGF. An anti-mitogenic effect of heparin was also observed against responses to combined exposure to TGF-beta1 and EGF. 5. There was a clear inhibitory effect of heparin in absolute terms against serum-induced division in cells plated at 10, 20 and 45 x 10(3) cells cm(-2). The inhibitory effect of heparin was also observed at a plating density of 45,000 cells cm(-2) when responses to serum were expressed as fold-stimulation of basal DNA synthesis. 6. These findings demonstrate a potential role of TGF-beta1, EGF and heparin-related molecules in regulation of airway smooth muscle division.
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Affiliation(s)
- K B Okona-Mensah
- Sackler Institute of Pulmonary Pharmacology, Department of Respiratory Medicine, Kings College School of Medicine and Dentistry, London
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