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Mandloi V, Banerjee T, Sharma A, Pratap A, Ansari MA, Srivastava V. Role of Bovine Colostrum Dressing on Chronic Non-Healing Wounds in Comparison to Conventional Dressing: A Case-Control Study. INT J LOW EXTR WOUND 2024:15347346241241578. [PMID: 38592472 DOI: 10.1177/15347346241241578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/10/2024]
Abstract
Colostrum has been shown to be suitable for oral and/or topical applications. Colostrum decreases the amount of discharge from wounds and also accelerates healing, leading to a decrease in the number of dressings. In this study, 40 patients with chronic non-healing wounds were divided into two groups, considering the inclusion and exclusion criteria. Group I included 15 patients with conventional dressings, and Group II included 25 patients with added topical colostrum dressings. All patients were assessed at the time of presentation and after 21 days. The results of the present study indicate that colostrum powder dressings may be used as an adjunct in the management of chronic non-healing wounds.
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Affiliation(s)
- Vikas Mandloi
- Department of General Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Tuhina Banerjee
- Department of Microbiology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Aditya Sharma
- Department of General Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Arvind Pratap
- Department of General Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Mumtaz Ahmad Ansari
- Department of General Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Vivek Srivastava
- Department of General Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
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Deng Z, Fan T, Xiao C, Tian H, Zheng Y, Li C, He J. TGF-β signaling in health, disease, and therapeutics. Signal Transduct Target Ther 2024; 9:61. [PMID: 38514615 PMCID: PMC10958066 DOI: 10.1038/s41392-024-01764-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 08/31/2023] [Accepted: 01/31/2024] [Indexed: 03/23/2024] Open
Abstract
Transforming growth factor (TGF)-β is a multifunctional cytokine expressed by almost every tissue and cell type. The signal transduction of TGF-β can stimulate diverse cellular responses and is particularly critical to embryonic development, wound healing, tissue homeostasis, and immune homeostasis in health. The dysfunction of TGF-β can play key roles in many diseases, and numerous targeted therapies have been developed to rectify its pathogenic activity. In the past decades, a large number of studies on TGF-β signaling have been carried out, covering a broad spectrum of topics in health, disease, and therapeutics. Thus, a comprehensive overview of TGF-β signaling is required for a general picture of the studies in this field. In this review, we retrace the research history of TGF-β and introduce the molecular mechanisms regarding its biosynthesis, activation, and signal transduction. We also provide deep insights into the functions of TGF-β signaling in physiological conditions as well as in pathological processes. TGF-β-targeting therapies which have brought fresh hope to the treatment of relevant diseases are highlighted. Through the summary of previous knowledge and recent updates, this review aims to provide a systematic understanding of TGF-β signaling and to attract more attention and interest to this research area.
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Affiliation(s)
- Ziqin Deng
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - Tao Fan
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - Chu Xiao
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - He Tian
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - Yujia Zheng
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - Chunxiang Li
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China.
| | - Jie He
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China.
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3
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Bu MT, Chandrasekhar P, Ding L, Hugo W. The roles of TGF-β and VEGF pathways in the suppression of antitumor immunity in melanoma and other solid tumors. Pharmacol Ther 2022; 240:108211. [PMID: 35577211 PMCID: PMC10956517 DOI: 10.1016/j.pharmthera.2022.108211] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 05/09/2022] [Accepted: 05/10/2022] [Indexed: 12/13/2022]
Abstract
Immune checkpoint blockade (ICB) has become well-known in cancer therapy, strengthening the body's antitumor immune response rather than directly targeting cancer cells. Therapies targeting immune inhibitory checkpoints, such as PD-1, PD-L1, and CTLA-4, have resulted in impressive clinical responses across different types of solid tumors. However, as with other types of cancer treatments, ICB-based immunotherapy is hampered by both innate and acquired drug resistance. We previously reported the enrichment of gene signatures associated with wound healing, epithelial-to-mesenchymal, and angiogenesis processes in the tumors of patients with innate resistance to PD-1 checkpoint antibody therapy; we termed these the Innate Anti-PD-1 Resistance Signatures (IPRES). The TGF-β and VEGFA pathways emerge as the dominant drivers of IPRES-associated processes. Here, we review these pathways' functions, their roles in immunosuppression, and the currently available therapies that target them. We also discuss recent developments in the targeting of TGF-β using a specific antibody class termed trap antibody. The application of trap antibodies opens the promise of localized targeting of the TGF-β and VEGFA pathways within the tumor microenvironment. Such specificity may offer an enhanced therapeutic window that enables suppression of the IPRES processes in the tumor microenvironment while sparing the normal homeostatic functions of TGF-β and VEGFA in healthy tissues.
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Affiliation(s)
- Melissa T Bu
- Department of Medicine/Dermatology, University of California Los Angeles, Los Angeles, CA 90095, USA; Department of Molecular, Cell, and Developmental Biology, University of California Los Angeles, Los Angeles, CA 90095, USA; David Geffen School of Medicine at UCLA, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Pallavi Chandrasekhar
- Department of Medicine/Dermatology, University of California Los Angeles, Los Angeles, CA 90095, USA; David Geffen School of Medicine at UCLA, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Lizhong Ding
- Department of Medicine/Dermatology, University of California Los Angeles, Los Angeles, CA 90095, USA; Parker Institute for Cancer Immunotherapy UCLA, USA; David Geffen School of Medicine at UCLA, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Willy Hugo
- Department of Medicine/Dermatology, University of California Los Angeles, Los Angeles, CA 90095, USA; Jonsson Comprehensive Cancer Center, University of California Los Angeles, Los Angeles, CA 90095, USA; Parker Institute for Cancer Immunotherapy UCLA, USA; David Geffen School of Medicine at UCLA, University of California Los Angeles, Los Angeles, CA 90095, USA.
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4
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Jofré DM, Hoffman DK, Cervino AS, Hahn GM, Grundy M, Yun S, Amrit FRG, Stolz DB, Godoy LF, Salvatore E, Rossi FA, Ghazi A, Cirio MC, Yanowitz JL, Hochbaum D. The CHARGE syndrome ortholog CHD-7 regulates TGF-β pathways in Caenorhabditis elegans. Proc Natl Acad Sci U S A 2022; 119:e2109508119. [PMID: 35394881 PMCID: PMC9169646 DOI: 10.1073/pnas.2109508119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 02/24/2022] [Indexed: 11/18/2022] Open
Abstract
CHARGE syndrome is a complex developmental disorder caused by mutations in the chromodomain helicase DNA-binding protein-7 (CHD7) and characterized by retarded growth and malformations in the heart and nervous system. Despite the public health relevance of this disorder, relevant cellular pathways and targets of CHD7 that relate to disease pathology are still poorly understood. Here we report that chd-7, the nematode ortholog of Chd7, is required for dauer morphogenesis, lifespan determination, stress response, and body size determination. Consistent with our discoveries, we found chd-7 to be allelic to scd-3, a previously identified dauer suppressor from the DAF-7/ tumor growth factor-β (TGF-β) pathway. Epistatic analysis places CHD-7 at the level of the DAF-3/DAF-5 complex, but we found that CHD-7 also directly impacts the expression of multiple components of this pathway. Transcriptomic analysis revealed that chd-7 mutants fail to repress daf-9 for execution of the dauer program. In addition, CHD-7 regulates the DBL-1/BMP pathway components and shares roles in male tail development and cuticle synthesis. To explore a potential conserved function for chd-7 in vertebrates, we used Xenopus laevis embryos, an established model to study craniofacial development. Morpholino-mediated knockdown of Chd7 led to a reduction in col2a1 messenger RNA (mRNA) levels, a collagen whose expression depends on TGF-β signaling. Both embryonic lethality and craniofacial defects in Chd7-depleted tadpoles were partially rescued by overexpression of col2a1 mRNA. We suggest that Chd7 has conserved roles in regulation of the TGF-β signaling pathway and pathogenic Chd7 could lead to a defective extracellular matrix deposition.
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Affiliation(s)
- Diego M. Jofré
- Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, C1053 Buenos Aires, Argentina
| | | | - Ailen S. Cervino
- Instituto de Fisiología, Biología Molecular y Neurociencias, Consejo Nacional de Investigaciones Científicas y Técnicas de Argentina, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, C1053 Buenos Aires, Argentina
| | - Gabriella M. Hahn
- Interdisciplinary Biomedical Graduate Program, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213
| | | | - Sijung Yun
- Laboratory of Molecular Biology, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20814
| | - Francis R. G. Amrit
- Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213
| | - Donna B. Stolz
- Center for Biologic Imaging, University of Pittsburgh Medical School, Pittsburgh, PA 15213
| | - Luciana F. Godoy
- Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, C1053 Buenos Aires, Argentina
| | - Esteban Salvatore
- Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, C1053 Buenos Aires, Argentina
| | - Fabiana A. Rossi
- Instituto de Investigaciones en Medicina Traslacional, Consejo Nacional de Investigaciones Científicas y Técnicas de Argentina, Universidad Austral, B1630 Pilar, Argentina
| | - Arjumand Ghazi
- Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213
- Department of Developmental Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213
- Department of Cell Biology & Physiology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213
| | - M. Cecilia Cirio
- Instituto de Fisiología, Biología Molecular y Neurociencias, Consejo Nacional de Investigaciones Científicas y Técnicas de Argentina, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, C1053 Buenos Aires, Argentina
| | - Judith L. Yanowitz
- Magee-Womens Research Institute, Pittsburgh, PA 15213
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of Pittsburgh, Pittsburgh, PA 15213
- Hillman Cancer Center, University of Pittsburgh, Pittsburgh, PA 15213
| | - Daniel Hochbaum
- Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, C1053 Buenos Aires, Argentina
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Huang X, Yang Z, Zhang J, Wang R, Fan J, Zhang H, Xu R, Li X, Yu S, Long L, Huang H. A Bibliometric Analysis Based on Web of Science: Current Perspectives and Potential Trends of SMAD7 in Oncology. Front Cell Dev Biol 2022; 9:712732. [PMID: 35252215 PMCID: PMC8894759 DOI: 10.3389/fcell.2021.712732] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 12/31/2021] [Indexed: 12/11/2022] Open
Abstract
Background: The number of publications on SMAD7 in the field of oncology is increasing rapidly with an upward tendency. In most cases, the mechanisms of carcinogenesis usually relate to disorders of signaling activity. Considering the crucial role of SMAD7 in the crosstalk of multiple signaling pathways, it is necessary to clarify and define the dominant research topics, core authors, and their cumulative research contributions, as well as the cooperative relationships among documents or researchers. Methods: Altogether, 3477 documents were retrieved from the Web of Science Core Collection with the following criteria: TS= (SMAD7 OR SMAD7-protein OR Small-Mothers-Against-Decapentaplegic-7) refined by WEB OF SCIENCE CATEGORY (ONCOLOGY) AND [excluding] PUBLICATION YEARS (2021) AND DOCUMENT TYPES (ARTICLE OR REVIEW) AND LANGUAGES (ENGLISH) AND WEB OF SCIENCE INDEX (Web of Science Core Collection, SCI), and the timespan of 2011–2020. Bibliometric visualization analysis was conducted with CiteSpace and VOSviewer. Results: The number of documents grew each year. A total of 2703 articles and 774 reviews were identified from 86 countries/regions, 3524 organizations, 928 journals, and 19,745 authors. China was the most prolific country, with 1881 documents. Contributions from China, the United States, and Germany were the most substantial. The most influential author was Lan Huiyao at The Chinese University of Hong Kong, with 24 publications and 2348 total citations. The bibliometric analysis showed that multilateral cooperation among diverse institutions or investigators was beneficial to high-quality outputs. The keyword “PPAR-gamma” exhibited the strongest burst in recent years, suggesting a potent research focus in the future. Conclusion: Research on SMAD7 in oncology is continuously developing. Bibliometrics is an interesting tool to present the characteristics of publication years, main authors, and productive organizations in a visualized way. It is worth mentioning that a prospective focus might be the specific mechanism of the interaction of PPAR-gamma with SMAD7 in oncology. In all, bibliometric analysis provides an overview and identifies potential research trends for further studies in this academic field.
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Affiliation(s)
- Xueying Huang
- Department of Histology and Embryology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Zhiying Yang
- Department of Histology and Embryology, Xiangya School of Medicine, Central South University, Changsha, China
- Changsha Health Vocational College, Changsha, China
| | - Jinning Zhang
- Department of Histology and Embryology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Ruojiao Wang
- Department of Histology and Embryology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Jiahui Fan
- Department of Histology and Embryology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Heng Zhang
- Department of Histology and Embryology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Rong Xu
- Department of Histology and Embryology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Xia Li
- Department of Histology and Embryology, Xiangya School of Medicine, Central South University, Changsha, China
- Department of Histology and Embryology, School of Basic Medical Science, Xinjiang Medical University, Urumqi, China
| | - Siying Yu
- Department of Histology and Embryology, Xiangya School of Medicine, Central South University, Changsha, China
| | - Linna Long
- Department of Histology and Embryology, Xiangya School of Medicine, Central South University, Changsha, China
| | - He Huang
- Department of Histology and Embryology, Xiangya School of Medicine, Central South University, Changsha, China
- *Correspondence: He Huang,
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Abstract
Transforming growth factor-β (TGFβ) signalling controls multiple cell fate decisions during development and tissue homeostasis; hence, dysregulation of this pathway can drive several diseases, including cancer. Here we discuss the influence that TGFβ exerts on the composition and behaviour of different cell populations present in the tumour immune microenvironment, and the context-dependent functions of this cytokine in suppressing or promoting cancer. During homeostasis, TGFβ controls inflammatory responses triggered by exposure to the outside milieu in barrier tissues. Lack of TGFβ exacerbates inflammation, leading to tissue damage and cellular transformation. In contrast, as tumours progress, they leverage TGFβ to drive an unrestrained wound-healing programme in cancer-associated fibroblasts, as well as to suppress the adaptive immune system and the innate immune system. In consonance with this key role in reprogramming the tumour microenvironment, emerging data demonstrate that TGFβ-inhibitory therapies can restore cancer immunity. Indeed, this approach can synergize with other immunotherapies - including immune checkpoint blockade - to unleash robust antitumour immune responses in preclinical cancer models. Despite initial challenges in clinical translation, these findings have sparked the development of multiple therapeutic strategies that inhibit the TGFβ pathway, many of which are currently in clinical evaluation.
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Affiliation(s)
- Daniele V F Tauriello
- Department of Cell Biology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands.
| | - Elena Sancho
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Barcelona, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Barcelona, Spain
| | - Eduard Batlle
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Barcelona, Spain.
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Barcelona, Spain.
- Institucio Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain.
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7
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Chavez-Dominguez R, Perez-Medina M, Aguilar-Cazares D, Galicia-Velasco M, Meneses-Flores M, Islas-Vazquez L, Camarena A, Lopez-Gonzalez JS. Old and New Players of Inflammation and Their Relationship With Cancer Development. Front Oncol 2021; 11:722999. [PMID: 34881173 PMCID: PMC8645998 DOI: 10.3389/fonc.2021.722999] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 11/04/2021] [Indexed: 12/18/2022] Open
Abstract
Pathogens or genotoxic agents continuously affect the human body. Acute inflammatory reaction induced by a non-sterile or sterile environment is triggered for the efficient elimination of insults that caused the damage. According to the insult, pathogen-associated molecular patterns, damage-associated molecular patterns, and homeostasis-altering molecular processes are released to facilitate the arrival of tissue resident and circulating cells to the injured zone to promote harmful agent elimination and tissue regeneration. However, when inflammation is maintained, a chronic phenomenon is induced, in which phagocytic cells release toxic molecules damaging the harmful agent and the surrounding healthy tissues, thereby inducing DNA lesions. In this regard, chronic inflammation has been recognized as a risk factor of cancer development by increasing the genomic instability of transformed cells and by creating an environment containing proliferation signals. Based on the cancer immunoediting concept, a rigorous and regulated inflammation process triggers participation of innate and adaptive immune responses for efficient elimination of transformed cells. When immune response does not eliminate all transformed cells, an equilibrium phase is induced. Therefore, excessive inflammation amplifies local damage caused by the continuous arrival of inflammatory/immune cells. To regulate the overstimulation of inflammatory/immune cells, a network of mechanisms that inhibit or block the cell overactivity must be activated. Transformed cells may take advantage of this process to proliferate and gradually grow until they become preponderant over the immune cells, preserving, increasing, or creating a microenvironment to evade the host immune response. In this microenvironment, tumor cells resist the attack of the effector immune cells or instruct them to sustain tumor growth and development until its clinical consequences. With tumor development, evolving, complex, and overlapping microenvironments are arising. Therefore, a deeper knowledge of cytokine, immune, and tumor cell interactions and their role in the intricated process will impact the combination of current or forthcoming therapies.
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Affiliation(s)
- Rodolfo Chavez-Dominguez
- Departamento de Enfermedades Cronico-Degenerativas, Instituto Nacional de Enfermedades Respiratorias "Ismael Cosio Villegas", Mexico City, Mexico.,Posgrado en Ciencias Biologicas, Universidad Nacional Autonoma de Mexico, Mexico City, Mexico
| | - Mario Perez-Medina
- Departamento de Enfermedades Cronico-Degenerativas, Instituto Nacional de Enfermedades Respiratorias "Ismael Cosio Villegas", Mexico City, Mexico.,Laboratorio de Quimioterapia Experimental, Departamento de Bioquímica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico
| | - Dolores Aguilar-Cazares
- Departamento de Enfermedades Cronico-Degenerativas, Instituto Nacional de Enfermedades Respiratorias "Ismael Cosio Villegas", Mexico City, Mexico
| | - Miriam Galicia-Velasco
- Departamento de Enfermedades Cronico-Degenerativas, Instituto Nacional de Enfermedades Respiratorias "Ismael Cosio Villegas", Mexico City, Mexico
| | - Manuel Meneses-Flores
- Departamento de Patología, Instituto Nacional de Enfermedades Respiratorias "Ismael Cosio Villegas", Mexico City, Mexico
| | - Lorenzo Islas-Vazquez
- Departamento de Enfermedades Cronico-Degenerativas, Instituto Nacional de Enfermedades Respiratorias "Ismael Cosio Villegas", Mexico City, Mexico
| | - Angel Camarena
- Laboratorio de Human Leukocyte Antigen (HLA), Instituto Nacional de Enfermedades Respiratorias "Ismael Cosio Villegas", Mexico City, Mexico
| | - Jose S Lopez-Gonzalez
- Departamento de Enfermedades Cronico-Degenerativas, Instituto Nacional de Enfermedades Respiratorias "Ismael Cosio Villegas", Mexico City, Mexico
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8
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Basta MD, Paulson H, Walker JL. The local wound environment is a key determinant of the outcome of TGFβ signaling on the fibrotic response of CD44 + leader cells in an ex vivo post-cataract-surgery model. Exp Eye Res 2021; 213:108829. [PMID: 34774488 DOI: 10.1016/j.exer.2021.108829] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 10/22/2021] [Accepted: 11/03/2021] [Indexed: 01/17/2023]
Abstract
The cytokine transforming growth factor beta (TGFβ) has a role in regulating the normal and pathological response to wound healing, yet how it shifts from a pro-repair to a pro-fibrotic function within the wound environment is still unclear. Using a clinically relevant ex vivo post-cataract surgery model that mimics the lens fibrotic disease posterior capsule opacification (PCO), we investigated the influence of two distinct wound environments on shaping the TGFβ-mediated injury response of CD44+ vimentin-rich leader cells. The substantial fibrotic response of this cell population occurred within a rigid wound environment under the control of endogenous TGFβ. However, TGFβ was dispensable for the role of leader cells in wound healing on the endogenous basement membrane wound environment, where repair occurs in the absence of a major fibrotic outcome. A difference between leader cell function in these distinct environments was their cell surface expression of the latent TGFβ activator, αvβ3 integrin. This receptor is exclusively found on this CD44+ cell population when they localize to the leading edge of the rigid wound environment. Providing exogenous TGFβ to bypass any differences in the ability of the leader cells to sustain activation of TGFβ in different environments revealed their inherent ability to induce pro-fibrotic reactions on the basement membrane wound environment. Furthermore, exposure of the leader cells in the rigid wound environment to TGFβ led to an accelerated fibrotic response including the earlier appearance of pro-collagen + cells, alpha smooth muscle actin (αSMA)+ myofibroblasts, and increased fibrotic matrix production. Collectively, these findings show the influence of the local wound environment on the extent and severity of TGFβ-induced fibrotic responses. These findings have important implications for understanding the development of the lens fibrotic disease PCO in response to cataract surgery wounding.
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Affiliation(s)
- Morgan D Basta
- Department of Pathology, Anatomy and Cell Biology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, 19107, USA
| | - Heather Paulson
- Department of Pathology, Anatomy and Cell Biology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, 19107, USA
| | - Janice L Walker
- Department of Pathology, Anatomy and Cell Biology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, 19107, USA; Department of Ophthalmology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, 19107, USA.
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9
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Hamanaka RB, Mutlu GM. The role of metabolic reprogramming and de novo amino acid synthesis in collagen protein production by myofibroblasts: implications for organ fibrosis and cancer. Amino Acids 2021; 53:1851-1862. [PMID: 33963932 DOI: 10.1007/s00726-021-02996-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 04/29/2021] [Indexed: 12/18/2022]
Abstract
Fibrosis is a pathologic condition resulting from aberrant wound healing responses that lead to excessive accumulation of extracellular matrix components, distortion of organ architecture, and loss of organ function. Fibrotic disease can affect every organ system; moreover, fibrosis is an important microenvironmental component of many cancers, including pancreatic, cervical, and hepatocellular cancers. Fibrosis is also an independent risk factor for cancer. Taken together, organ fibrosis contributes to up to 45% of all deaths worldwide. There are no approved therapies that halt or reverse fibrotic disease, highlighting the great need for novel therapeutic targets. At the heart of almost all fibrotic disease is the TGF-β-mediated differentiation of fibroblasts into myofibroblasts, the primary cell type responsible for the production of collagen and other matrix proteins and distortion of tissue architecture. Recent advances, particularly in the field of lung fibrosis, have highlighted the role that metabolic reprogramming plays in the pathogenic phenotype of myofibroblasts, particularly the induction of de novo amino acid synthesis pathways that are required to support collagen matrix production by these cells. In this review, we will discuss the metabolic changes associated with myofibroblast differentiation, focusing on the de novo production of glycine and proline, two amino acids which compose over half of the primary structure of collagen protein. We will also discuss the important role that synthesis of these amino acids plays in regulating cellular redox balance and epigenetic state.
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Affiliation(s)
- Robert B Hamanaka
- Department of Medicine, Section of Pulmonary and Critical Care Medicine, The University of Chicago, 5841 S. Maryland Avenue, MC6026, Chicago, IL, 60637, USA
| | - Gökhan M Mutlu
- Department of Medicine, Section of Pulmonary and Critical Care Medicine, The University of Chicago, 5841 S. Maryland Avenue, MC6026, Chicago, IL, 60637, USA.
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10
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M2-like macrophage infiltration and transforming growth factor-β secretion during socket healing process in mice. Arch Oral Biol 2021; 123:105042. [PMID: 33482540 DOI: 10.1016/j.archoralbio.2021.105042] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 12/15/2020] [Accepted: 01/03/2021] [Indexed: 01/01/2023]
Abstract
OBJECTIVE Macrophages are involved in tissue inflammation and repair through cytokine secretion. However, the contribution of macrophages to healing and osteogenesis after tooth extraction remains unclear. Therefore, we investigated the distribution of osteoblastic cells and macrophages in the early healing process after tooth extraction. METHODS The maxillary first molars of 6-week-old male mice were extracted. The maxilla was collected 1, 3, and 7 days after extraction. The states of socket healing, localization of osteoblastic markers, and macrophage infiltration were sequentially observed by micro-CT imaging and immunohistochemistry. RESULTS On day 3 after tooth extraction, α-smooth muscle actin (SMA)-positive cells, osteoprogenitor cells at fracture healing, were observed in the socket. Several α-SMA-positive cells also expressed Runx2, the early osteoblast differentiation marker. The infiltration of F4/80-positive, mature macrophages and CD206-positive, M2-like macrophages was noted in the socket. However, CD169-positive macrophages (Osteomac), which are involved in fracture healing, were not detected in the socket. F4/80-positive and CD206-positive macrophages also showed the localization of transforming growth factor-β (TGF-β), which promotes osteoprogenitor cell proliferation and early differentiation. Phosphorylated Smad3, a downstream mediator of the signal activity of TGF-β, was detected in α-SMA-positive cells. On day 7, the extracted socket contained a large amount of new bone. Tartrate-resistant acid phosphatase (TRAP)-positive osteoclasts were detected on bone surfaces. CONCLUSION Our data indicate that M2-like macrophages regulate the proliferation and differentiation of α-SMA-positive cells by secreting TGF-β at the early stage of socket healing, and also suggest the importance of macrophages in healing and bone formation after tooth extraction.
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Hamanaka RB, Mutlu GM. Metabolic requirements of pulmonary fibrosis: role of fibroblast metabolism. FEBS J 2021; 288:6331-6352. [PMID: 33393204 DOI: 10.1111/febs.15693] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 12/22/2020] [Accepted: 12/31/2020] [Indexed: 12/27/2022]
Abstract
Fibrosis is a pathologic condition characterized by excessive deposition of extracellular matrix and chronic scaring that can affect every organ system. Organ fibrosis is associated with significant morbidity and mortality, contributing to as many as 45% of all deaths in the developed world. In the lung, many chronic lung diseases may lead to fibrosis, the most devastating being idiopathic pulmonary fibrosis (IPF), which affects approximately 3 million people worldwide and has a median survival of 3.8 years. Currently approved therapies for IPF do not significantly extend lifespan, and thus, there is pressing need for novel therapeutic strategies to treat IPF and other fibrotic diseases. At the heart of pulmonary fibrosis are myofibroblasts, contractile cells with characteristics of both fibroblasts and smooth muscle cells, which are the primary cell type responsible for matrix deposition in fibrotic diseases. Much work has centered around targeting the extracellular growth factors and intracellular signaling regulators of myofibroblast differentiation. Recently, metabolic changes associated with myofibroblast differentiation have come to the fore as targetable mechanisms required for myofibroblast function. In this review, we will discuss the metabolic changes associated with myofibroblast differentiation, as well as the mechanisms by which these changes promote myofibroblast function. We will then discuss the potential for this new knowledge to lead to the development of novel therapies for IPF and other fibrotic diseases.
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Affiliation(s)
- Robert B Hamanaka
- Section of Pulmonary and Critical Care Medicine, Department of Medicine, University of Chicago, IL, USA
| | - Gökhan M Mutlu
- Section of Pulmonary and Critical Care Medicine, Department of Medicine, University of Chicago, IL, USA
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12
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Balık AR, Balık ZB, Aktaş A, Neşelioğlu S, Karabulut E, Karabulut AB. Examination of androgenetic alopecia with serum biomarkers. J Cosmet Dermatol 2020; 20:1855-1859. [PMID: 32969583 DOI: 10.1111/jocd.13732] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 09/11/2020] [Accepted: 09/14/2020] [Indexed: 11/29/2022]
Abstract
BACKGROUND Androgenetic alopecia (AGA) is the most common type of hair loss and affects approximately 50% of the male population. AIMS In the present study, to investigate microinflammation, perifollicular fibrosis, and oxidative stress in AGA cases, some serum biomarker levels were measured and evaluated. PATIENTS/METHODS Serum samples were drawn from patients (n = 58) and control (n = 30) groups referring to Atatürk Training and Investigation Hospital Dermatology Outpatient clinic. In serum samples, NF-κB, TNF-α, TGF-β1, thioredoxin, nitric oxide, TOS, TAS, and thiol disulfide homeostasis (native thiol, total thiol, disulfide) were measured and evaluated. RESULTS In patients with AGA, NF-κB (P = .005), TNF-α (P = .008), TGF-β1 (P = .028), thioredoxin (P = .004), nitric oxide (P < .001), and TOS (P < .001) serum levels were found to be significantly higher than those in control group, while TAS (P = .003), native thiol (P < .001), total thiol (P < .001), and disulfide (P < .001) serum levels were found to be significantly lower. CONCLUSIONS According to the results of the present study, it was concluded that in that AGA androgens lead to oxidative stress by increasing free oxygen radicals, which accelerates hair loss by causing microinflammation and fibrosis. The recognition of the effect of androgens and associated factors on the hair follicle cycle is essential for the development of new and effective treatment methods.
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Affiliation(s)
- Ahmet Rıfat Balık
- Department of Medical Biochemistry, Faculty of Medicine, Ankara Yıldırım Beyazıt University, Ankara, Turkey
| | - Zeynep Büşra Balık
- Department of Dermatology, University of Health Sciences Gülhane Training and Investigation Hospital, Ankara, Turkey
| | - Akın Aktaş
- Department of Dermatology, Faculty of Medicine, Ankara Yıldırım Beyazıt University, Ankara, Turkey
| | - Salim Neşelioğlu
- Department of Medical Biochemistry, Faculty of Medicine, Ankara Yıldırım Beyazıt University, Ankara, Turkey
| | - Ercan Karabulut
- Department of Pharmacology, Faculty of Medicine, Ankara Yıldırım Beyazıt University, Ankara, Turkey
| | - Aysun Bay Karabulut
- Department of Medical Biochemistry, Faculty of Medicine, Ankara Yıldırım Beyazıt University, Ankara, Turkey
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13
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Insights into the HIV Latency and the Role of Cytokines. Pathogens 2019; 8:pathogens8030137. [PMID: 31487807 PMCID: PMC6789648 DOI: 10.3390/pathogens8030137] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 08/24/2019] [Accepted: 09/01/2019] [Indexed: 12/23/2022] Open
Abstract
Human immunodeficiency virus-1 (HIV-1) has the ability to infect latently at the level of individual CD4+ cells. Latent HIV-1 proviruses are transcriptionally silent and immunologically inert, but are still capable of reactivating productive lytic infection following cellular activation. These latent viruses are the main obstacle in the eradication of HIV-1, because current HIV-1 treatment regimens are ineffective against them. Normal immunological response against an antigen activates CD4+ naïve T cells. The activated CD4+ naïve T cells undergo cell cycle, resulting in further transformation and profound proliferation to form effector CD4+ T-cells. Notably, in HIV-1 infected individuals, some of the effector CD4+ T cells get infected with HIV-1. Upon fulfillment of their effector functions, almost all activated CD4+ T cells are committed to apoptosis or programmed cell death, but a miniscule fraction revert to quiescence and become resting memory CD4+ T cells to mediate a rapid immunological response against the same antigen in the future. However, due to the quiescent nature of the resting memory T cells, the integrated HIV-1 becomes transcriptionally silent and acquires a latent phenotype. Following re-exposure to the same antigen, memory cells and integrated HIV-1 are stimulated. The reactivated latent HIV provirus subsequently proceeds through its life cycle and eventually leads to the production of new viral progeny. Recently, many strategies against HIV-1 latency have been developed and some of them have even matured to the clinical level, but none can yet effectively eliminate the latent HIV reservoir, which remains a barrier to HIV-1 cure. Therefore, alternative strategies to eradicate latent HIV need to be considered. This review provides vital knowledge on HIV latency and on strategies to supplement highly active anti-retroviral therapy (HAART) with cytokine-mediated therapeutics for dislodging the latent HIV reservoirs in order to open up new avenues for curing HIV.
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Forel JM, Guervilly C, Farnarier C, Donati SY, Hraiech S, Persico N, Allardet-Servent J, Coiffard B, Gainnier M, Loundou A, Sylvestre A, Roch A, Bourenne J, Papazian L. Transforming Growth Factor-β1 in predicting early lung fibroproliferation in patients with acute respiratory distress syndrome. PLoS One 2018; 13:e0206105. [PMID: 30395619 PMCID: PMC6218031 DOI: 10.1371/journal.pone.0206105] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2018] [Accepted: 10/05/2018] [Indexed: 01/05/2023] Open
Abstract
Background Fibroproliferative repair phase of the acute respiratory distress syndrome (ARDS) is followed by a restitutio ad integrum of lung parenchyma or by an irreversible lung fibrosis and patients’ death. Transforming Growth Factor-β1 (TGF-β1) is involved in collagen production and lung repair. We investigated whether alveolar TGF-β1 was associated with the presence of fibroproliferation and the outcome of ARDS patients. Methods Sixty-two patients were included the first day of moderate-to-severe ARDS. Bronchoalveolar lavage fluid (BALF) was collected at day 3 (and day 7 when the patients were still receiving invasive mechanical ventilation) from the onset of ARDS. Survival was evaluated at day 60. TGF-β1 was measured by immunoassay. The patients were classified as having lung fibroproliferation when the alveolar N-terminal peptide for type III procollagen (NT-PCP-III) measured on day 3 was > 9 μg/L as recently reported. The main objective of this study was to compare the alveolar levels of total TGF-β1 according to the presence or not a lung fibroproliferation at day 3. Results Forty-three patients (30.6%) presented a fibroproliferation at day 3. BALF levels of total TGF-β1 were not statistically different at day 3 (and at day 7) according to the presence or not lung fibroproliferation. Mortality at day 60 was higher in the group of patients with fibroproliferation as compared with patients with no fibroproliferation (68.4% vs. 18.6% respectively; p < 0.001). Total TGF-β1 measured on BALF at day 3 was not associated with the outcome. Multiple logistic regression showed that the presence of lung fibroproliferation was associated with death. In contrast, TGF-β1 was not independently associated with death. Conclusions Pulmonary levels of TGF-β1 during the first week of ARDS were not associated nor with the presence of fibroproliferation neither with death. TGF-β1 should not be used as a biomarker to direct anti-fibrotic therapies.
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Affiliation(s)
- Jean-Marie Forel
- Médecine Intensive-Réanimation, Hôpital Nord, Assistance Publique–Hôpitaux de Marseille, Marseille, France
- CEReSS—Centre d'Etudes et de Recherches sur les Services de Santé et qualité de vie EA3279, Faculté de Médecine de Marseille Aix-Marseille Université, France
| | - Christophe Guervilly
- Médecine Intensive-Réanimation, Hôpital Nord, Assistance Publique–Hôpitaux de Marseille, Marseille, France
- CEReSS—Centre d'Etudes et de Recherches sur les Services de Santé et qualité de vie EA3279, Faculté de Médecine de Marseille Aix-Marseille Université, France
| | - Catherine Farnarier
- Laboratoire d’Immunologie, Hôpital de la Conception, Assistance Publique–Hôpitaux de Marseille, Marseille, France
| | | | - Sami Hraiech
- Médecine Intensive-Réanimation, Hôpital Nord, Assistance Publique–Hôpitaux de Marseille, Marseille, France
- CEReSS—Centre d'Etudes et de Recherches sur les Services de Santé et qualité de vie EA3279, Faculté de Médecine de Marseille Aix-Marseille Université, France
| | - Nicolas Persico
- CEReSS—Centre d'Etudes et de Recherches sur les Services de Santé et qualité de vie EA3279, Faculté de Médecine de Marseille Aix-Marseille Université, France
- Service d’Accueil des Urgences, Hôpital Nord, Assistance Publique–Hôpitaux de Marseille, Marseille, France
| | | | - Benjamin Coiffard
- Médecine Intensive-Réanimation, Hôpital Nord, Assistance Publique–Hôpitaux de Marseille, Marseille, France
- CEReSS—Centre d'Etudes et de Recherches sur les Services de Santé et qualité de vie EA3279, Faculté de Médecine de Marseille Aix-Marseille Université, France
| | - Marc Gainnier
- Réanimation des Urgences et Médicale, Hôpital de la Timone, Assistance Publique–Hôpitaux de Marseille, Marseille, France
| | - Anderson Loundou
- CEReSS—Centre d'Etudes et de Recherches sur les Services de Santé et qualité de vie EA3279, Faculté de Médecine de Marseille Aix-Marseille Université, France
| | - Aude Sylvestre
- Médecine Intensive-Réanimation, Hôpital Nord, Assistance Publique–Hôpitaux de Marseille, Marseille, France
- CEReSS—Centre d'Etudes et de Recherches sur les Services de Santé et qualité de vie EA3279, Faculté de Médecine de Marseille Aix-Marseille Université, France
| | - Antoine Roch
- Médecine Intensive-Réanimation, Hôpital Nord, Assistance Publique–Hôpitaux de Marseille, Marseille, France
- CEReSS—Centre d'Etudes et de Recherches sur les Services de Santé et qualité de vie EA3279, Faculté de Médecine de Marseille Aix-Marseille Université, France
| | - Jeremy Bourenne
- Réanimation des Urgences et Médicale, Hôpital de la Timone, Assistance Publique–Hôpitaux de Marseille, Marseille, France
| | - Laurent Papazian
- Médecine Intensive-Réanimation, Hôpital Nord, Assistance Publique–Hôpitaux de Marseille, Marseille, France
- CEReSS—Centre d'Etudes et de Recherches sur les Services de Santé et qualité de vie EA3279, Faculté de Médecine de Marseille Aix-Marseille Université, France
- * E-mail:
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Effect of transforming growth factor -β1 on α-smooth muscle actin and collagen expression in equine endometrial fibroblasts. Theriogenology 2018; 124:9-17. [PMID: 30321755 DOI: 10.1016/j.theriogenology.2018.10.005] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 10/03/2018] [Accepted: 10/03/2018] [Indexed: 11/22/2022]
Abstract
Transforming growth factor (TGF)-β1 not only regulates cell growth, development, and tissue remodeling, but it also participates in the pathogenesis of tissue fibrosis. In the equine endometrium, the concentration of TGF-β1 is correlated with endometrosis (equine endometrial fibrosis). In other tissues, TGF-β1 induces differentiation of many cell types into myofibroblasts. These cells are characterized by α-smooth muscle actin (α-SMA) expression and an ability to deposit excessive amounts of extracellular matrix (ECM) components. The aim of the study was to determine whether TGF-β1 plays a role in the development of equine endometrosis. In Exp. 1, endometrial expression of α-SMA in different stages of endometrosis was determined. In endometrial tissues from the mid luteal phase (n = 6 for each stages of endometrosis) and the follicular phase of the estrous cycle (n = 5 for each stages of endometrosis), mRNA transcription and protein expression of α-Sma were evaluated by Real-time PCR and Western-blot, respectively. The α-Sma mRNA transcription and protein expression levels were correlated with the severity of endometrosis (P < 0.05). In both phases of the estrous cycle, α-SMA protein expression was up-regulated in final stage of endometrosis compared to initial stage (P < 0.05). In Exp. 2, the dose- and time-dependent effects of TGF-β1 on expression of α-SMA and ECM components were determined, as well as cell proliferation of equine fibroblasts. Equine endometrial fibroblasts (n = 6, Kenney and Doig category I) were stimulated with vehicle or TGF-β1 (1, 5, 10 ng/ml) for 24, 48 or 72 h. Then, mRNA transcription of α-Sma, collagen type I (Col1a1), collagen type III (Col3a1) and fibronectin 1 (Fn1) were determined by Real-time PCR. The production of ECM components was determined by ELISA. Transforming growth factor-β1 increased the mRNA transcription of α-Sma and ECM components in a dose- and time-dependent manner in cultured endometrial fibroblasts (P < 0.05). Additionally, TGF-β1 at a dose of 10 ng/ml increased α-SMA protein expression and COL1, COL3, FN production after 72 h of stimulation (P < 0.05). The data showed a positive linkage between the presence of myofibroblasts and severity of endometrosis. We conclude that TGF-β1 may participate in pathological fibrotic changes in equine endometrial tissue by induction of myofibroblast differentiation, increased production of ECM components and fibroblast proliferation.
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David CJ, Massagué J. Contextual determinants of TGFβ action in development, immunity and cancer. Nat Rev Mol Cell Biol 2018; 19:419-435. [PMID: 29643418 DOI: 10.1038/s41580-018-0007-0] [Citation(s) in RCA: 510] [Impact Index Per Article: 85.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Few cell signals match the impact of the transforming growth factor-β (TGFβ) family in metazoan biology. TGFβ cytokines regulate cell fate decisions during development, tissue homeostasis and regeneration, and are major players in tumorigenesis, fibrotic disorders, immune malfunctions and various congenital diseases. The effects of the TGFβ family are mediated by a combinatorial set of ligands and receptors and by a common set of receptor-activated mothers against decapentaplegic homologue (SMAD) transcription factors, yet the effects can differ dramatically depending on the cell type and the conditions. Recent progress has illuminated a model of TGFβ action in which SMADs bind genome-wide in partnership with lineage-determining transcription factors and additionally integrate inputs from other pathways and the chromatin to trigger specific cellular responses. These new insights clarify the operating logic of the TGFβ pathway in physiology and disease.
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Affiliation(s)
- Charles J David
- Cancer Biology and Genetics Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA.,Tsinghua University School of Medicine, Department of Basic Sciences, Beijing, China
| | - Joan Massagué
- Cancer Biology and Genetics Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
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Abadir P, Hosseini S, Faghih M, Ansari A, Lay F, Smith B, Beselman A, Vuong D, Berger A, Tian J, Rini D, Keenahan K, Budman J, Inagami T, Fedarko N, Marti G, Harmon J, Walston J. Topical Reformulation of Valsartan for Treatment of Chronic Diabetic Wounds. J Invest Dermatol 2018; 138:434-443. [PMID: 29078982 PMCID: PMC10941026 DOI: 10.1016/j.jid.2017.09.030] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 09/05/2017] [Accepted: 09/07/2017] [Indexed: 02/07/2023]
Abstract
Chronic wounds are among the most devastating and difficult to treat consequences of diabetes. Dysregulation of the skin renin-angiotensin system is implicated in abnormal wound healing in diabetic and older adults. Given this, we sought to determine the effects of topical reformulations of the angiotensin type 1 receptor blockers losartan and valsartan and the angiotensin-converting enzyme inhibitor captopril on wound healing in diabetic and aged mice with further validation in older diabetic pigs. The application of 1% valsartan gel compared with other tested formulations and placebo facilitated and significantly accelerated closure time and increased tensile strength in mice, and was validated in the porcine model. One percent of valsartan gel-treated wounds also exhibited higher mitochondrial content, collagen deposition, phosphorylated mothers against decapentaplegic homologs 2 and 3 and common mothers against decapentaplegic homolog 4, alpha-smooth muscle actin, CD31, phospho-vascular endothelial growth factor receptor 2, and p42/44 mitogen-activated protein kinase. Knockout of the angiotensin subtype 2 receptors abolished the beneficial effects of angiotensin type 1 receptor blockers, suggesting a role for angiotensin subtype 2 receptors in chronic wound healing.
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Affiliation(s)
- Peter Abadir
- Division of Geriatrics Medicine and Gerontology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.
| | - Sayed Hosseini
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Mahya Faghih
- Division of Geriatrics Medicine and Gerontology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Amir Ansari
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Frank Lay
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Barbara Smith
- Cell Biology Imaging Facility, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Aleksandra Beselman
- Investigational Drug Service Pharmacy, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Diep Vuong
- Division of Geriatrics Medicine and Gerontology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Alan Berger
- Division of Allergy and Clinical Immunology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Jing Tian
- Department of Biostatistics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - David Rini
- Art as Applied to Medicine, Division of Cellular and Molecular Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Kevin Keenahan
- Department of Bioengineering Innovation, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Joshua Budman
- Department of Bioengineering Innovation, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Tadashi Inagami
- Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Neal Fedarko
- Division of Geriatrics Medicine and Gerontology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Guy Marti
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA; Clinique Saint Jean, Melun, France
| | - John Harmon
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Jeremy Walston
- Division of Geriatrics Medicine and Gerontology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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Bai H, Lee JS, Hu H, Wang T, Isaji T, Liu S, Guo J, Liu H, Wolf K, Ono S, Guo X, Yatsula B, Xing Y, Fahmy TM, Dardik A. Transforming Growth Factor-β1 Inhibits Pseudoaneurysm Formation After Aortic Patch Angioplasty. Arterioscler Thromb Vasc Biol 2017; 38:195-205. [PMID: 29146747 DOI: 10.1161/atvbaha.117.310372] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Accepted: 11/07/2017] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Pseudoaneurysms remain a significant complication after vascular procedures. We hypothesized that TGF-β (transforming growth factor-β) signaling plays a mechanistic role in the development of pseudoaneurysms. APPROACH AND RESULTS Rat aortic pericardial patch angioplasty was associated with a high incidence (88%) of pseudoaneurysms at 30 days, with increased smad2 phosphorylation in small pseudoaneurysms but not in large pseudoaneurysms; TGF-β1 receptors were increased in small pseudoaneurysms and preserved in large pseudoaneurysms. Delivery of TGF-β1 via nanoparticles covalently bonded to the patch stimulated smad2 phosphorylation both in vitro and in vivo and significantly decreased pseudoaneurysm formation (6.7%). Inhibition of TGF-β1 signaling with SB431542 decreased smad2 phosphorylation both in vitro and in vivo and significantly induced pseudoaneurysm formation by day 7 (66.7%). CONCLUSIONS Normal healing after aortic patch angioplasty is associated with increased TGF-β1 signaling, and recruitment of smad2 signaling may limit pseudoaneurysm formation; loss of TGF-β1 signaling is associated with the formation of large pseudoaneurysms. Enhancement of TGF-β1 signaling may be a potential mechanism to limit pseudoaneurysm formation after vascular intervention.
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Affiliation(s)
- Hualong Bai
- From the Department of Vascular Surgery, First Affiliated Hospital of Zhengzhou University, Henan, China (H.B.); Basic Medical College of Zhengzhou University, Henan, China (H.B., Y.X.); Vascular Biology and Therapeutics Program (H.B., H.H., T.W., T.I., S.L., J.G., H.L., K.W., S.O., X.G., B.Y., A.D.), Department of Surgery (H.B., H.H., T.W., T.I., S.L., J.G., H.L., K.W., S.O., X.G., B.Y., A.D.), and Department of Immunobiology (T.M.F.), Yale University School of Medicine, New Haven, CT; Department of Biomedical Engineering, Yale University, New Haven, CT (J.S.L., T.M.F.); and Department of Surgery, VA Connecticut Healthcare System, West Haven, CT (A.D.)
| | - Jung Seok Lee
- From the Department of Vascular Surgery, First Affiliated Hospital of Zhengzhou University, Henan, China (H.B.); Basic Medical College of Zhengzhou University, Henan, China (H.B., Y.X.); Vascular Biology and Therapeutics Program (H.B., H.H., T.W., T.I., S.L., J.G., H.L., K.W., S.O., X.G., B.Y., A.D.), Department of Surgery (H.B., H.H., T.W., T.I., S.L., J.G., H.L., K.W., S.O., X.G., B.Y., A.D.), and Department of Immunobiology (T.M.F.), Yale University School of Medicine, New Haven, CT; Department of Biomedical Engineering, Yale University, New Haven, CT (J.S.L., T.M.F.); and Department of Surgery, VA Connecticut Healthcare System, West Haven, CT (A.D.)
| | - Haidi Hu
- From the Department of Vascular Surgery, First Affiliated Hospital of Zhengzhou University, Henan, China (H.B.); Basic Medical College of Zhengzhou University, Henan, China (H.B., Y.X.); Vascular Biology and Therapeutics Program (H.B., H.H., T.W., T.I., S.L., J.G., H.L., K.W., S.O., X.G., B.Y., A.D.), Department of Surgery (H.B., H.H., T.W., T.I., S.L., J.G., H.L., K.W., S.O., X.G., B.Y., A.D.), and Department of Immunobiology (T.M.F.), Yale University School of Medicine, New Haven, CT; Department of Biomedical Engineering, Yale University, New Haven, CT (J.S.L., T.M.F.); and Department of Surgery, VA Connecticut Healthcare System, West Haven, CT (A.D.)
| | - Tun Wang
- From the Department of Vascular Surgery, First Affiliated Hospital of Zhengzhou University, Henan, China (H.B.); Basic Medical College of Zhengzhou University, Henan, China (H.B., Y.X.); Vascular Biology and Therapeutics Program (H.B., H.H., T.W., T.I., S.L., J.G., H.L., K.W., S.O., X.G., B.Y., A.D.), Department of Surgery (H.B., H.H., T.W., T.I., S.L., J.G., H.L., K.W., S.O., X.G., B.Y., A.D.), and Department of Immunobiology (T.M.F.), Yale University School of Medicine, New Haven, CT; Department of Biomedical Engineering, Yale University, New Haven, CT (J.S.L., T.M.F.); and Department of Surgery, VA Connecticut Healthcare System, West Haven, CT (A.D.)
| | - Toshihiko Isaji
- From the Department of Vascular Surgery, First Affiliated Hospital of Zhengzhou University, Henan, China (H.B.); Basic Medical College of Zhengzhou University, Henan, China (H.B., Y.X.); Vascular Biology and Therapeutics Program (H.B., H.H., T.W., T.I., S.L., J.G., H.L., K.W., S.O., X.G., B.Y., A.D.), Department of Surgery (H.B., H.H., T.W., T.I., S.L., J.G., H.L., K.W., S.O., X.G., B.Y., A.D.), and Department of Immunobiology (T.M.F.), Yale University School of Medicine, New Haven, CT; Department of Biomedical Engineering, Yale University, New Haven, CT (J.S.L., T.M.F.); and Department of Surgery, VA Connecticut Healthcare System, West Haven, CT (A.D.)
| | - Shirley Liu
- From the Department of Vascular Surgery, First Affiliated Hospital of Zhengzhou University, Henan, China (H.B.); Basic Medical College of Zhengzhou University, Henan, China (H.B., Y.X.); Vascular Biology and Therapeutics Program (H.B., H.H., T.W., T.I., S.L., J.G., H.L., K.W., S.O., X.G., B.Y., A.D.), Department of Surgery (H.B., H.H., T.W., T.I., S.L., J.G., H.L., K.W., S.O., X.G., B.Y., A.D.), and Department of Immunobiology (T.M.F.), Yale University School of Medicine, New Haven, CT; Department of Biomedical Engineering, Yale University, New Haven, CT (J.S.L., T.M.F.); and Department of Surgery, VA Connecticut Healthcare System, West Haven, CT (A.D.)
| | - Jianming Guo
- From the Department of Vascular Surgery, First Affiliated Hospital of Zhengzhou University, Henan, China (H.B.); Basic Medical College of Zhengzhou University, Henan, China (H.B., Y.X.); Vascular Biology and Therapeutics Program (H.B., H.H., T.W., T.I., S.L., J.G., H.L., K.W., S.O., X.G., B.Y., A.D.), Department of Surgery (H.B., H.H., T.W., T.I., S.L., J.G., H.L., K.W., S.O., X.G., B.Y., A.D.), and Department of Immunobiology (T.M.F.), Yale University School of Medicine, New Haven, CT; Department of Biomedical Engineering, Yale University, New Haven, CT (J.S.L., T.M.F.); and Department of Surgery, VA Connecticut Healthcare System, West Haven, CT (A.D.)
| | - Haiyang Liu
- From the Department of Vascular Surgery, First Affiliated Hospital of Zhengzhou University, Henan, China (H.B.); Basic Medical College of Zhengzhou University, Henan, China (H.B., Y.X.); Vascular Biology and Therapeutics Program (H.B., H.H., T.W., T.I., S.L., J.G., H.L., K.W., S.O., X.G., B.Y., A.D.), Department of Surgery (H.B., H.H., T.W., T.I., S.L., J.G., H.L., K.W., S.O., X.G., B.Y., A.D.), and Department of Immunobiology (T.M.F.), Yale University School of Medicine, New Haven, CT; Department of Biomedical Engineering, Yale University, New Haven, CT (J.S.L., T.M.F.); and Department of Surgery, VA Connecticut Healthcare System, West Haven, CT (A.D.)
| | - Katharine Wolf
- From the Department of Vascular Surgery, First Affiliated Hospital of Zhengzhou University, Henan, China (H.B.); Basic Medical College of Zhengzhou University, Henan, China (H.B., Y.X.); Vascular Biology and Therapeutics Program (H.B., H.H., T.W., T.I., S.L., J.G., H.L., K.W., S.O., X.G., B.Y., A.D.), Department of Surgery (H.B., H.H., T.W., T.I., S.L., J.G., H.L., K.W., S.O., X.G., B.Y., A.D.), and Department of Immunobiology (T.M.F.), Yale University School of Medicine, New Haven, CT; Department of Biomedical Engineering, Yale University, New Haven, CT (J.S.L., T.M.F.); and Department of Surgery, VA Connecticut Healthcare System, West Haven, CT (A.D.)
| | - Shun Ono
- From the Department of Vascular Surgery, First Affiliated Hospital of Zhengzhou University, Henan, China (H.B.); Basic Medical College of Zhengzhou University, Henan, China (H.B., Y.X.); Vascular Biology and Therapeutics Program (H.B., H.H., T.W., T.I., S.L., J.G., H.L., K.W., S.O., X.G., B.Y., A.D.), Department of Surgery (H.B., H.H., T.W., T.I., S.L., J.G., H.L., K.W., S.O., X.G., B.Y., A.D.), and Department of Immunobiology (T.M.F.), Yale University School of Medicine, New Haven, CT; Department of Biomedical Engineering, Yale University, New Haven, CT (J.S.L., T.M.F.); and Department of Surgery, VA Connecticut Healthcare System, West Haven, CT (A.D.)
| | - Xiangjiang Guo
- From the Department of Vascular Surgery, First Affiliated Hospital of Zhengzhou University, Henan, China (H.B.); Basic Medical College of Zhengzhou University, Henan, China (H.B., Y.X.); Vascular Biology and Therapeutics Program (H.B., H.H., T.W., T.I., S.L., J.G., H.L., K.W., S.O., X.G., B.Y., A.D.), Department of Surgery (H.B., H.H., T.W., T.I., S.L., J.G., H.L., K.W., S.O., X.G., B.Y., A.D.), and Department of Immunobiology (T.M.F.), Yale University School of Medicine, New Haven, CT; Department of Biomedical Engineering, Yale University, New Haven, CT (J.S.L., T.M.F.); and Department of Surgery, VA Connecticut Healthcare System, West Haven, CT (A.D.)
| | - Bogdan Yatsula
- From the Department of Vascular Surgery, First Affiliated Hospital of Zhengzhou University, Henan, China (H.B.); Basic Medical College of Zhengzhou University, Henan, China (H.B., Y.X.); Vascular Biology and Therapeutics Program (H.B., H.H., T.W., T.I., S.L., J.G., H.L., K.W., S.O., X.G., B.Y., A.D.), Department of Surgery (H.B., H.H., T.W., T.I., S.L., J.G., H.L., K.W., S.O., X.G., B.Y., A.D.), and Department of Immunobiology (T.M.F.), Yale University School of Medicine, New Haven, CT; Department of Biomedical Engineering, Yale University, New Haven, CT (J.S.L., T.M.F.); and Department of Surgery, VA Connecticut Healthcare System, West Haven, CT (A.D.)
| | - Ying Xing
- From the Department of Vascular Surgery, First Affiliated Hospital of Zhengzhou University, Henan, China (H.B.); Basic Medical College of Zhengzhou University, Henan, China (H.B., Y.X.); Vascular Biology and Therapeutics Program (H.B., H.H., T.W., T.I., S.L., J.G., H.L., K.W., S.O., X.G., B.Y., A.D.), Department of Surgery (H.B., H.H., T.W., T.I., S.L., J.G., H.L., K.W., S.O., X.G., B.Y., A.D.), and Department of Immunobiology (T.M.F.), Yale University School of Medicine, New Haven, CT; Department of Biomedical Engineering, Yale University, New Haven, CT (J.S.L., T.M.F.); and Department of Surgery, VA Connecticut Healthcare System, West Haven, CT (A.D.)
| | - Tarek M Fahmy
- From the Department of Vascular Surgery, First Affiliated Hospital of Zhengzhou University, Henan, China (H.B.); Basic Medical College of Zhengzhou University, Henan, China (H.B., Y.X.); Vascular Biology and Therapeutics Program (H.B., H.H., T.W., T.I., S.L., J.G., H.L., K.W., S.O., X.G., B.Y., A.D.), Department of Surgery (H.B., H.H., T.W., T.I., S.L., J.G., H.L., K.W., S.O., X.G., B.Y., A.D.), and Department of Immunobiology (T.M.F.), Yale University School of Medicine, New Haven, CT; Department of Biomedical Engineering, Yale University, New Haven, CT (J.S.L., T.M.F.); and Department of Surgery, VA Connecticut Healthcare System, West Haven, CT (A.D.)
| | - Alan Dardik
- From the Department of Vascular Surgery, First Affiliated Hospital of Zhengzhou University, Henan, China (H.B.); Basic Medical College of Zhengzhou University, Henan, China (H.B., Y.X.); Vascular Biology and Therapeutics Program (H.B., H.H., T.W., T.I., S.L., J.G., H.L., K.W., S.O., X.G., B.Y., A.D.), Department of Surgery (H.B., H.H., T.W., T.I., S.L., J.G., H.L., K.W., S.O., X.G., B.Y., A.D.), and Department of Immunobiology (T.M.F.), Yale University School of Medicine, New Haven, CT; Department of Biomedical Engineering, Yale University, New Haven, CT (J.S.L., T.M.F.); and Department of Surgery, VA Connecticut Healthcare System, West Haven, CT (A.D.).
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19
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Kim BS, Tilstam PV, Springenberg-Jung K, Boecker AH, Schmitz C, Heinrichs D, Hwang SS, Stromps JP, Ganse B, Kopp R, Knobe M, Bernhagen J, Pallua N, Bucala R. Characterization of adipose tissue macrophages and adipose-derived stem cells in critical wounds. PeerJ 2017; 5:e2824. [PMID: 28070458 PMCID: PMC5217526 DOI: 10.7717/peerj.2824] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Accepted: 11/22/2016] [Indexed: 01/14/2023] Open
Abstract
Background Subcutaneous adipose tissue is a rich source of adipose tissue macrophages and adipose-derived stem cells which both play a key role in wound repair. While macrophages can be divided into the classically-activated M1 and the alternatively-activated M2 phenotype, ASCs are characterized by the expression of specific stem cell markers. Methods In the present study, we have investigated the expression of common macrophage polarization and stem cell markers in acutely inflamed adipose tissue. Subcutaneous adipose tissue adjacent to acutely inflamed wounds of 20 patients and 20 healthy subjects were harvested and underwent qPCR and flow cytometry analysis. Results Expression levels of the M1-specific markers CD80, iNOS, and IL-1b were significantly elevated in inflammatory adipose tissue when compared to healthy adipose tissue, whereas the M2-specific markers CD163 and TGF-β were decreased. By flow cytometry, a significant shift of adipose tissue macrophage populations towards the M1 phenotype was confirmed. Furthermore, a decrease in the mesenchymal stem cell markers CD29, CD34, and CD105 was observed whereas CD73 and CD90 remained unchanged. Discussion This is the first report describing the predominance of M1 adipose tissue macrophages and the reduction of stem cell marker expression in acutely inflamed, non-healing wounds.
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Affiliation(s)
- Bong-Sung Kim
- Plastic and Reconstructive Surgery, Hand Surgery-Burn Center, Rheinisch-Westfälische Technische Hochschule Aachen, Aachen, Germany.,Department of Medicine, Yale University, New Haven, United States.,Institute of Biochemistry and Molecular Cell Biology, Rheinisch-Westfälische Technische Hochschule Aachen, Aachen, Germany
| | | | - Katrin Springenberg-Jung
- Plastic and Reconstructive Surgery, Hand Surgery-Burn Center, Rheinisch-Westfälische Technische Hochschule Aachen, Aachen, Germany
| | - Arne Hendrick Boecker
- Plastic and Reconstructive Surgery, Hand Surgery-Burn Center, Rheinisch-Westfälische Technische Hochschule Aachen, Aachen, Germany
| | - Corinna Schmitz
- Institute of Biochemistry and Molecular Cell Biology, Rheinisch-Westfälische Technische Hochschule Aachen, Aachen, Germany
| | - Daniel Heinrichs
- Institute of Biochemistry and Molecular Cell Biology, Rheinisch-Westfälische Technische Hochschule Aachen, Aachen, Germany
| | - Soo Seok Hwang
- Department of Immunology, Yale University, New Haven, United States
| | - Jan Philipp Stromps
- Plastic and Reconstructive Surgery, Hand Surgery-Burn Center, Rheinisch-Westfälische Technische Hochschule Aachen, Aachen, Germany
| | - Bergita Ganse
- Department of Orthopedic Trauma Surgery, Rheinisch-Westfälische Technische Hochschule Aachen, Aachen, Germany
| | - Ruedger Kopp
- Department of Intensive Care Medicine, Rheinisch-Westfälische Technische Hochschule Aachen, Aachen, Germany
| | - Matthias Knobe
- Department of Orthopedic Trauma Surgery, Rheinisch-Westfälische Technische Hochschule Aachen, Aachen, Germany
| | - Juergen Bernhagen
- Department of Vascular Biology, Institute for Stroke and Dementia Research, Ludwig-Maximilians-Universität München (LMU), Munich, Germany.,Munich Cluster for Systems Neurology (SyNergy), Ludwig-Maximilians-Universität München (LMU), Munich, Germany
| | - Norbert Pallua
- Plastic and Reconstructive Surgery, Hand Surgery-Burn Center, Rheinisch-Westfälische Technische Hochschule Aachen, Aachen, Germany
| | - Richard Bucala
- Department of Medicine, Yale University, New Haven, United States
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20
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Abstract
Nature's demands on salivary glands are extensive and diverse and range from the reptilian need for a venomous drop to incapacitate its prey to the 100 quarts that ruminants require to digest a day's grazing. Other species depend on saliva not for survival, but for improving the quality of life, using the fluid for functions varying from grooming and cleansing to nest-building. Humans can manage without saliva; its loss is not life-threatening in any immediate sense, but it results in a variety of difficulties and miseries. Oral digestion per se is only of marginal importance in humans, but saliva is important in preparing food for mastication, for swallowing, and far normal taste perception. Without saliva, mealtimes are difficult, uncomfortable, and embarrassing. The complex mix of salivary constituents provides an effective set of systems for lubricating and protecting the soft and hard tissues. Protection of soft tissues is afforded against desiccation, penetration, ulceration, and potential carcinogens by mucin and anti-proteases. Saliva can encourage soft tissue repair by reducing clotting time and accelerating wound contraction. A major protective function results from the salivary role in maintenance of the ecological balance in the oral cavity via: (1) debridement/lavage; (2) aggregation and reduced adherence by both immunological and non-immunological means; and (3) direct antibacterial activity. Saliva also possesses antifungal and anti-viral systems. Saliva is effective in maintaining pH in the oral cavity, contributes to the regulation of plaque pH, and helps neutralize reflux acids in the esophagus. Salivary maintenance of tooth integrity is dependent on: (I) mechanical cleansing and carbohydrate clearance; (2) post-eruptive maturation of enamel; (3) regulation of the ionic environment to provide a remineralizing potential without spontaneous precipitation; and (4) pellicle deposition and limitation of acid diffusion. Saliva also plays a role in water balance, can serve in a limited way in excretion, and has possible hormonal function in the gastro-intestinal tract.
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Affiliation(s)
- I. D. Mandel
- School of Dental and Oral Surgery, Columbia University, 630 West 168th Street, New York, New York 10032
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21
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Ricotti G, Tucci M, Pugnaloni A, Biagini G, Belligolli A, Bertani A, Castagnani R, Castaldini C. Epidermal Growth Factor in Cutaneous Repair Processes. J BIOACT COMPAT POL 2016. [DOI: 10.1177/088391159200700107] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Donor areas on patients undergoing plastic surgery were treated with epidermal growth factor (EGF) to stimulate tissue regeneration. Mor phometric analyses showed that cutaneous explants, treated with EGF, pre sented a higher number of microvessels ( p < 0.01) and mesenchimal cells ( p < 0.01), than untreated areas, while EGF did not improve epidermal thick ening. By electron microscopy, better histoarchitectural maturation of cellular and extracellular dermal compartments was observed after EGF application. This work provides evidence that EGF does stimulate skin repair by promoting the formation of mature cutaneous tissue.
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Affiliation(s)
- G. Ricotti
- Faculty of Medicine University of Ancona Via P. Ranieri-Monte d'Ago 60131 Ancona Italy
| | - M.G. Tucci
- Faculty of Medicine University of Ancona Via P. Ranieri-Monte d'Ago 60131 Ancona Italy
| | - A. Pugnaloni
- Faculty of Medicine University of Ancona Via P. Ranieri-Monte d'Ago 60131 Ancona Italy
| | - G. Biagini
- Faculty of Medicine University of Ancona Via P. Ranieri-Monte d'Ago 60131 Ancona Italy
| | - A. Belligolli
- Faculty of Medicine University of Ancona Via P. Ranieri-Monte d'Ago 60131 Ancona Italy
| | - A. Bertani
- Faculty of Medicine University of Ancona Via P. Ranieri-Monte d'Ago 60131 Ancona Italy
| | - R. Castagnani
- C.E.D.U.A. Faculty of Engineering University of Ancona Italy
| | - C. Castaldini
- Institute of Histology Faculty of Medicine University of Bologna Italy
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22
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Feng L, Yang R, Liu D, Wang X, Song Y, Cao H, He D, Gan Y, Kou X, Zhou Y. PDL Progenitor–Mediated PDL Recovery Contributes to Orthodontic Relapse. J Dent Res 2016; 95:1049-56. [PMID: 27161015 DOI: 10.1177/0022034516648604] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Periodontal ligament (PDL) is subjected to mechanical force during physiologic activities. PDL stem/progenitor cells are the main mesenchymal stem cells in PDL. However, how PDL progenitors participate in PDL homeostasis upon and after mechanical force is largely unknown. In this study, force-triggered orthodontic tooth movement and the following relapse were used as models to demonstrate the response of PDL progenitors and their role in PDL remodeling upon and after mechanical force. Upon orthodontic force, PDL collagen on the compression side significantly degraded, showing a broken and disorganized pattern. After force withdrawal, the degraded PDL collagen recovered during the early stage of relapse. Correspondingly, increased CD90+ PDL progenitors with suppressed expression of type I collagen (Col-I) were observed upon orthodontic force, whereas these cells accumulated at the degradation regions and regained Col-I expression after force withdrawal during early relapse. Our results further showed that compressive force altered cell morphology and repressed collagen expression in cultured PDL progenitors, which both recovered after force withdrawal. Force withdrawal–induced recovery of collagen expression in cultured PDL progenitors could be regulated by transforming growth factor–β (TGF-β), a key molecule for tissue homeostasis and extracellular matrix remodeling. More interesting, inhibiting the regained Col-I expression in CD90+ PDL progenitors by blocking TGF-β interrupted PDL collagen recovery and partially inhibited the early relapse. These data suggest that PDL progenitors can respond to mechanical force and may process intrinsic stability to recover to original status after force withdrawal. PDL progenitors with intrinsic stability are required for PDL recovery and consequently contribute to early orthodontic relapse, which can be regulated by TGF-β signaling.
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Affiliation(s)
- L. Feng
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Beijing, China
| | - R. Yang
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Beijing, China
| | - D. Liu
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Beijing, China
| | - X. Wang
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Beijing, China
| | - Y. Song
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Beijing, China
| | - H. Cao
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Beijing, China
| | - D. He
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Beijing, China
| | - Y. Gan
- Center for Temporomandibular Disorders and Orofacial Pain, Peking University School and Hospital of Stomatology, Beijing, China
- Center Laboratory, Peking University School and Hospital of Stomatology, Beijing, China
| | - X. Kou
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Beijing, China
| | - Y. Zhou
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
- Center for Craniofacial Stem Cell Research and Regeneration, Peking University School and Hospital of Stomatology, Beijing, China
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The Discovery and Early Days of TGF-β: A Historical Perspective. Cold Spring Harb Perspect Biol 2016; 8:cshperspect.a021865. [PMID: 27328871 DOI: 10.1101/cshperspect.a021865] [Citation(s) in RCA: 120] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Transforming growth factors (TGFs) were discovered as activities that were secreted by cancer cells, and later by normal cells, and had the ability to phenotypically and reversibly transform immortalized fibroblasts. TGF-β distinguished itself from TGF-α because it did not bind to the same epidermal growth factor (EGF) receptor as TGF-α and, therefore, acted through different cell-surface receptors and signaling mediators. This review summarizes the discovery of TGF-β, the early developments in its molecular and biological characterization with its many biological activities in different cell and tissue contexts and its roles in disease, the realization that there is a family of secreted TGF-β-related proteins with many differentiation functions in development and activities in normal cell and tissue physiology, and the subsequent identification and characterization of the receptors and effectors that mediate TGF-β family signaling responses.
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Morikawa M, Derynck R, Miyazono K. TGF-β and the TGF-β Family: Context-Dependent Roles in Cell and Tissue Physiology. Cold Spring Harb Perspect Biol 2016; 8:8/5/a021873. [PMID: 27141051 DOI: 10.1101/cshperspect.a021873] [Citation(s) in RCA: 821] [Impact Index Per Article: 102.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The transforming growth factor-β (TGF-β) is the prototype of the TGF-β family of growth and differentiation factors, which is encoded by 33 genes in mammals and comprises homo- and heterodimers. This review introduces the reader to the TGF-β family with its complexity of names and biological activities. It also introduces TGF-β as the best-studied factor among the TGF-β family proteins, with its diversity of roles in the control of cell proliferation and differentiation, wound healing and immune system, and its key roles in pathology, for example, skeletal diseases, fibrosis, and cancer.
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Affiliation(s)
- Masato Morikawa
- Ludwig Cancer Research, Science for Life Laboratory, Uppsala University, Biomedical Center, SE-751 24 Uppsala, Sweden
| | - Rik Derynck
- Department of Cell and Tissue Biology, University of California at San Francisco, San Francisco, California 94143
| | - Kohei Miyazono
- Department of Molecular Pathology, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
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25
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Woo HD, Park KT, Kim EH, Heo Y, Jeong JH, Pyun DG, Choi CS, Lee JG, Han DK, Nah JW, Son TI. Preparation of UV-curable gelatin derivatives for drug immobilization on polyurethane foam: Development of wound dressing foam. Macromol Res 2015. [DOI: 10.1007/s13233-015-3131-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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26
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Kshirsagar AY, Vekariya MA, Gupta V, Pednekar AS, Mahna A, Patankar R, Shaikh A, Nagur B. A comparative study of colostrum dressing versus conventional dressing in deep wounds. J Clin Diagn Res 2015; 9:PC01-4. [PMID: 26023589 PMCID: PMC4437104 DOI: 10.7860/jcdr/2015/12004.5739] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Accepted: 02/19/2015] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Deep wounds are extending deeper, across deep fascia into muscles or deeper structures. Understanding of nutrition, immunology, psychological issues, the physiology and the metabolic interactions require for optimal treatment of deep wounds. Wound dressing plays one of the important roles in wound healing. Newer type of wound dressings - Biological dressings like colostrum powder, collagen granules create the physiological interface between the wound surface and environment which is impermeable to bacteria. AIM To compare the efficacy and safety of colostrum dressing and conventional dressing in deep wounds. MATERIALS AND METHODS Data was collected from all patients with deep wounds (stage II-IV), admitted during the period of April 2013 to March 2014, considering the inclusion and exclusion criteria. RESULTS Less number of dressings, short healing time, rapid healing and decrease pain seen in colostrum dressing group compared to conventional dressing group. CONCLUSION Colostrum powder dressings are safe, promoter of wound healing, more patient compliance in terms of less pain, less number of dressing required. This treatment though found to be more expensive than conventional dressings; results indicate that colostrum powder dressings may be used as an adjunct in management of deep wound.
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Affiliation(s)
- Ashok Y. Kshirsagar
- Professor, Department of General Surgery, Krishna Institute of Medical Sciences University and Research Centre, Karad, Maharashtra, India
| | - Mayank A. Vekariya
- P.G. Resident, Department of General Surgery, Krishna Institute of Medical Sciences University and Research Centre, Karad, Maharashtra, India
| | - Vaibhav Gupta
- P.G. Resident, Department of General Surgery, Krishna Institute of Medical Sciences University and Research Centre, Karad, Maharashtra, India
| | - Akshay S. Pednekar
- P.G. Resident, Department of General Surgery, Krishna Institute of Medical Sciences University and Research Centre, Karad, Maharashtra, India
| | - Abhishek Mahna
- P.G. Resident, Department of General Surgery, Krishna Institute of Medical Sciences University and Research Centre, Karad, Maharashtra, India
| | - Ritvij Patankar
- P.G. Resident, Department of General Surgery, Krishna Institute of Medical Sciences University and Research Centre, Karad, Maharashtra, India
| | - Ashar Shaikh
- P.G. Resident, Department of General Surgery, Krishna Institute of Medical Sciences University and Research Centre, Karad, Maharashtra, India
| | - Basavraj Nagur
- P.G. Resident, Department of General Surgery, Krishna Institute of Medical Sciences University and Research Centre, Karad, Maharashtra, India
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Ruiz Ibán MÁ, Comellas Melero N, Martinez-Botas J, Ortiz A, Diaz Heredia J. Growth factor expression after lesion creation in the avascular zone of the meniscus: a quantitative PCR study in rabbits. Arthroscopy 2014; 30:1131-8. [PMID: 24951133 DOI: 10.1016/j.arthro.2014.04.089] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Revised: 03/27/2014] [Accepted: 04/07/2014] [Indexed: 02/02/2023]
Abstract
PURPOSE To define the variations in the expression of 5 growth factor genes in meniscal tissue after a lesion is created in the avascular zone of the medial meniscus of the rabbit. METHODS A longitudinal lesion was created in the avascular zone of the anterior horn of the medial meniscus in 42 rabbits. Six animals were killed at 0, 1, 3, 7, 14, 21, and 120 days after lesion creation. Meniscal tissue from the avascular and vascular zones was harvested. A quantitative polymerase chain reaction analysis was performed to evaluate the expression levels of 5 different growth factors: vascular endothelial growth factor A (VEGF-A), insulin-like growth factor 1 (IGF-1), transforming growth factor β1 (TGF-β1), platelet-derived growth factor β (PDGF-β), and interleukin 1β. RESULTS The basal expression levels of all the growth factors studied were similar in the avascular and vascular zones. There was an increase in VEGF-A expression in the avascular zone on the 14th day, an increase in IGF-1 expression in the vascular zone on the 14th day, a decrease in PDGF-β expression in both zones in the first week, an increase in interleukin 1β expression in both zones on the first day, and a decrease in TGF-β1 expression in the vascular zone in the first week. At 120 days, the expression levels of all 5 growth factors returned to basal levels. CONCLUSIONS There are significant variations in the expression of the growth factors studied during the first weeks after meniscal lesion creation. The preinjury expression levels are similar in the avascular and vascular zones and are not significantly different from the basal levels 4 months after injury. CLINICAL RELEVANCE This study identifies potential therapeutic molecular targets (VEGF-A, IGF-1, TGF-β1, and PDGF-β) that can be used in the treatment of meniscal tears.
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Affiliation(s)
- Miguel Ángel Ruiz Ibán
- Unidad de Hombro y Codo, Servicio de Traumatología y Cirugía Ortopédica, Hospital Universitario Ramón y Cajal, Madrid, Spain.
| | - Nerea Comellas Melero
- Servicio de Cirugía Plástica, Hospital Universitario Juan Canalejo, La Coruña, Spain
| | - Javier Martinez-Botas
- Servicio de Bioquímica-Investigación, Hospital Universitario Juan Canalejo, La Coruña, Spain; Centros de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, Spain
| | - Ana Ortiz
- Servicio de Cirugía Experimental, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - Jorge Diaz Heredia
- Unidad de Hombro y Codo, Servicio de Traumatología y Cirugía Ortopédica, Hospital Universitario Ramón y Cajal, Madrid, Spain
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Ciayadi R, Kelso GF, Potdar MK, Harris SJ, Walton KL, Harrison CA, Hearn MTW. Identification of protein binding partners of ALK-5 kinase inhibitors. Bioorg Med Chem 2013; 21:6496-500. [PMID: 24055074 DOI: 10.1016/j.bmc.2013.08.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Revised: 08/13/2013] [Accepted: 08/21/2013] [Indexed: 10/26/2022]
Abstract
We have investigated the binding characteristics of a potent member of the bis-ortho-substituted five-membered nitrogen heterocycle class of ALK-5 kinase inhibitors with lysates of cultured HEK-293 cells to identify protein binding partners of potential biological significance. An affinity chromatographic resin containing an immobilized ALK-5 kinase inhibitor, 2-phenyl-4-[3-(pyridin-2-yl)-1H-pyrazol-4-yl]pyridine, was used to capture specific proteins from the cell lysate. The soluble inhibitor was then used to specifically elute the proteins which selectively bound to the pharmacophore ligand structure. Application of 2-D SDS-PAGE analysis with positive and negative controls demonstrated the inhibitor bound several different proteins via selective molecular recognition processes. The structural features of the specifically eluted proteins were identified by peptide mass fingerprinting (PMF) methods and included proteins with structural, metabolic and chaperone functions. Furthermore, these PMF results identified the therapeutic target in various cancer treatment studies, HSP-70, as a potential high-affinity binding partner. These observations warrant examination of bis-ortho-substituted five-membered nitrogen heterocycles as dual ALK-5/HSP-70 inhibitors for anti-cancer drug development.
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Affiliation(s)
- Rudy Ciayadi
- Centre for Green Chemistry, Monash University, Clayton, Victoria 3800, Australia
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Finnson KW, Arany PR, Philip A. Transforming Growth Factor Beta Signaling in Cutaneous Wound Healing: Lessons Learned from Animal Studies. Adv Wound Care (New Rochelle) 2013; 2:225-237. [PMID: 24761336 DOI: 10.1089/wound.2012.0419] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2013] [Indexed: 12/11/2022] Open
Abstract
SIGNIFICANCE Wound healing is a complex physiological process involving a multitude of growth factors, among which transforming growth factor beta (TGF-β) has the broadest spectrum of effects. Animal studies have provided key information on the mechanisms of TGF-β action in wound healing and have guided the development of therapeutic strategies targeting the TGF-β pathway to improve wound healing and scarring outcome. RECENT ADVANCES Development of tissue-specific expression systems for overexpression or knockout of TGF-β signaling pathway components has led to novel insight into the role of TGF-β signaling in wound healing. This work has also identified molecules that might serve as molecular targets for the treatment of pathological skin conditions such as chronic wounds and excessive scarring (fibrosis). CRITICAL ISSUES Many of the mouse models with genetic alterations in the TGF-β signaling pathway develop an underlying skin abnormality, which may pose some limitations on the interpretation of wound-healing results obtained in these animals. Also, TGF-β's pleiotropic effects on many cell types throughout all phases of wound healing present a challenge in designing specific strategies for targeting the TGF-β signaling pathway to promote wound healing or reduce scarring. FUTURE DIRECTIONS Further characterization of TGF-β signaling pathway components using inducible tissue-specific overexpression or knockout technology will be needed to corroborate results obtained in mouse models that display a skin phenotype, and to better understand the role of TGF-β signaling during distinct phases of the wound-healing process. Such studies will also provide a better understanding of how TGF-β mediates its autocrine, paracrine, and double paracrine effects on cellular responses in vivo during wound healing.
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Affiliation(s)
- Kenneth W. Finnson
- Division of Plastic Surgery, Department of Surgery, McGill University, Montreal General Hospital, Montreal, Canada
| | - Praveen R. Arany
- Cell Regulation and Control Unit, Oral and Pharyngeal Cancer Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland
| | - Anie Philip
- Division of Plastic Surgery, Department of Surgery, McGill University, Montreal General Hospital, Montreal, Canada
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30
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Fibroblast-mediated drug resistance in cancer. Biochem Pharmacol 2013; 85:1033-41. [DOI: 10.1016/j.bcp.2013.01.018] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2013] [Revised: 01/18/2013] [Accepted: 01/22/2013] [Indexed: 02/07/2023]
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Yu TY, Pang JHS, Wu KPH, Chen MJL, Chen CH, Tsai WC. Aging is associated with increased activities of matrix metalloproteinase-2 and -9 in tenocytes. BMC Musculoskelet Disord 2013; 14:2. [PMID: 23281803 PMCID: PMC3621429 DOI: 10.1186/1471-2474-14-2] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2012] [Accepted: 12/23/2012] [Indexed: 01/22/2023] Open
Abstract
Background Most tendon pathology is associated with degeneration, which is thought to involve cyclic loading and cumulative age-related changes in tissue architecture. However, the association between aging and degeneration of the extracellular matrix (ECM) in tendons has not been investigated extensively. Methods We examined tenocytes from Achilles tendons taken from rats of three different ages (2, 12, and 24 months). Tenocyte viability was assessed using the 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide (MTT) assay. Quantitative real-time polymerase chain reaction (PCR) was used to determine the levels of mRNAs that encode type-I collagen, matrix metalloproteinase (MMP)-2 and −9, tissue inhibitor of metalloproteinase (TIMP)-1 and −2 and transforming growth factor (TGF)-β1. Gelatin zymography was used to evaluate the enzymatic activities of MMP-2 and −9. Furthermore, the concentration of TGF-β1 in conditioned medium was evaluated using enzyme-linked immunosorbent assay (ELISA). Results The results of the MTT assay showed that the number of viable tenocytes decreased with age. No differences were observed in the levels of mRNAs that encode type-I collagen and TGF-β1 among the three age groups, and the TGF-β1 concentration did not change with age. However, mRNAs that encode MMP-2 and −9 were significantly more abundant in tenocytes from the aging group, and gelatin zymography revealed that the enzymatic activities of MMP-2 and −9 also increased significantly with age. Furthermore, as compared with young group, mRNAs that encode TIMP-1 and −2 were significantly decreased in tenocytes from the aging group. Conclusions Activities of MMP-2 and MMP-9 in tenocytes increase with age. This might provide a mechanistic explanation of how aging contributes to tendinopathy or tendon rupture with age.
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Affiliation(s)
- Tung-Yang Yu
- Departement of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Linkou, Taiwan
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Suh EJ, Remillard MY, Legesse-Miller A, Johnson EL, Lemons JMS, Chapman TR, Forman JJ, Kojima M, Silberman ES, Coller HA. A microRNA network regulates proliferative timing and extracellular matrix synthesis during cellular quiescence in fibroblasts. Genome Biol 2012; 13:R121. [PMID: 23259597 PMCID: PMC3924601 DOI: 10.1186/gb-2012-13-12-r121] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2012] [Accepted: 12/22/2012] [Indexed: 01/01/2023] Open
Abstract
Background Although quiescence (reversible cell cycle arrest) is a key part in the life history and fate of many mammalian cell types, the mechanisms of gene regulation in quiescent cells are poorly understood. We sought to clarify the role of microRNAs as regulators of the cellular functions of quiescent human fibroblasts. Results Using microarrays, we discovered that the expression of the majority of profiled microRNAs differed between proliferating and quiescent fibroblasts. Fibroblasts induced into quiescence by contact inhibition or serum starvation had similar microRNA profiles, indicating common changes induced by distinct quiescence signals. By analyzing the gene expression patterns of microRNA target genes with quiescence, we discovered a strong regulatory function for miR-29, which is downregulated with quiescence. Using microarrays and immunoblotting, we confirmed that miR-29 targets genes encoding collagen and other extracellular matrix proteins and that those target genes are induced in quiescence. In addition, overexpression of miR-29 resulted in more rapid cell cycle re-entry from quiescence. We also found that let-7 and miR-125 were upregulated in quiescent cells. Overexpression of either one alone resulted in slower cell cycle re-entry from quiescence, while the combination of both together slowed cell cycle re-entry even further. Conclusions microRNAs regulate key aspects of fibroblast quiescence including the proliferative state of the cells as well as their gene expression profiles, in particular, the induction of extracellular matrix proteins in quiescent fibroblasts.
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Toraldo G, Bhasin S, Bakhit M, Guo W, Serra C, Safer JD, Bhawan J, Jasuja R. Topical androgen antagonism promotes cutaneous wound healing without systemic androgen deprivation by blocking β-catenin nuclear translocation and cross-talk with TGF-β signaling in keratinocytes. Wound Repair Regen 2012; 20:61-73. [PMID: 22276587 DOI: 10.1111/j.1524-475x.2011.00757.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Orchidectomy in rodents and lower testosterone levels in men are associated with improved cutaneous wound healing. However, due to the adverse effects on skeletal and sexual tissues, systemic androgen blockade is not a viable therapeutic intervention. Accordingly, we tested the hypothesis that topical application of an androgen antagonist would elicit accelerated wound healing without systemic androgen antagonism. Full-thickness cutaneous wounds were created on adult C57BL6/J mice. Daily topical application of androgen receptor antagonist, flutamide, resulted in improved gap closure similar to orchiectomized controls and faster than orchidectomized mice treated with topical testosterone. In vivo data showed that the effects of androgen antagonism on wound closure primarily accelerate keratinocytes migration without effecting wound contraction. Consequently, mechanisms of testosterone action on reepithelialization were investigated in vitro by scratch wounding assays in confluent keratinocytes. Testosterone inhibited keratinocyte migration and this effect was in part mediated through promotion of nuclear translocation of β-catenin and by attenuating transforming growth factor-β (TGF-β) signaling through β-catenin. The link between Wnt and TGF beta signaling was confirmed by blocking β-catenin and by following TGF-β-induced transcription of a luciferase reporter gene. Together, these data show that blockade of β-catenin can, as a potential target for novel therapeutic interventions, accelerate cutaneous wound healing.
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Affiliation(s)
- Gianluca Toraldo
- Section of Endocrinology, Diabetes, and Nutrition, Boston University School of Medicine, Boston, Massachusetts 02118, USA
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Karamichos D, Hutcheon AEK, Zieske JD. Transforming growth factor-β3 regulates assembly of a non-fibrotic matrix in a 3D corneal model. J Tissue Eng Regen Med 2011; 5:e228-38. [PMID: 21604386 DOI: 10.1002/term.429] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2010] [Accepted: 03/14/2011] [Indexed: 12/13/2022]
Abstract
Corneal tissue engineering has attracted the attention of many researchers over the years, in part due to the cornea's avascularity and relatively straightforward structure. However, the highly organized and structured nature of this optically clear tissue has presented a great challenge. We have previously developed a model in which human corneal fibroblasts (HCFs) are stimulated by a stable vitamin C (VitC) derivative to self-assemble an extracellular matrix (ECM). Addition of TGFβ1 enhanced the assembly of ECM; however, it was accompanied by the upregulation of specific fibrotic markers. In this study, we tested the effects of all three TGFβ isoforms (-β1, -β2 and -β3) on ECM production, as well as expression of fibrotic markers. HCFs were grown in four media conditions for 4 weeks: control, VitC only; T1, VitC + TGFβ1; T2, VitC + TGFβ2; and T3, VitC + TGFβ3. The cultures were analysed with western blots, TEM and indirect immunofluorescence (IF). Compared to controls, all TGFβ isoforms stimulated matrix production by about three-fold. IF showed the presence of type III collagen and smooth muscle actin (SMA) in T1 and T2; however, T3 showed little to no expression. In western blots, T3 stimulated a lower type III:type I collagen ratio when compared to the other conditions. In addition, TEM indicated that T3 stimulated a higher level of matrix alignment and organization. HCFs stimulated by VitC and TGFβ3 appear to generate a matrix that mimics the normal adult or developing human cornea, whereas TGF-β1 and -β2 drive the constructs towards a more fibrotic path.
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Affiliation(s)
- D Karamichos
- Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
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Abstract
TGF-ß, a growth factor involved in various stages of the wound healing process, exists in three different isoforms. Experimental models have shown these isoforms to be functionally different and one of them, TGF-ß3, has the potential to reduce scarring in clinical practice. This literature review explores the role of TGF- in wound healing, examining the research to date.
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Affiliation(s)
- H E Douglas
- Canniesburn Plastic Surgery Unit, Glasgow, UK.
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36
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Shing CM, Hunter DC, Stevenson LM. Bovine Colostrum Supplementation and Exercise Performance. Sports Med 2009; 39:1033-54. [DOI: 10.2165/11317860-000000000-00000] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Nishimura SL. Integrin-mediated transforming growth factor-beta activation, a potential therapeutic target in fibrogenic disorders. THE AMERICAN JOURNAL OF PATHOLOGY 2009; 175:1362-70. [PMID: 19729474 DOI: 10.2353/ajpath.2009.090393] [Citation(s) in RCA: 110] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A subset of integrins function as cell surface receptors for the profibrotic cytokine transforming growth factor-beta (TGF-beta). TGF-beta is expressed in an inactive or latent form, and activation of TGF-beta is a major mechanism that regulates TGF-beta function. Indeed, important TGF-beta activation mechanisms involve several of the TGF-beta binding integrins. Knockout mice suggest essential roles for integrin-mediated TGF-beta activation in vessel and craniofacial morphogenesis during development and in immune homeostasis and the fibrotic wound healing response in the adult. Amplification of integrin-mediated TGF-beta activation in fibrotic disorders and data from preclinical models suggest that integrins may therefore represent novel targets for antifibrotic therapies.
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Affiliation(s)
- Stephen L Nishimura
- Department of Anatomic Pathology, University of California San Francisco, San Francisco, CA 94143, USA.
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Salib RJ, Howarth PH. Transforming growth factor-beta in allergic inflammatory disease of the upper airways: friend or foe? Clin Exp Allergy 2009; 39:1128-35. [PMID: 19400903 DOI: 10.1111/j.1365-2222.2009.03239.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
TGF-beta is a multi-functional cytokine with a huge array of effects on a variety of cell types. It is rapidly emerging as a key major player in the way the airway epithelium behaves and its ability to repair itself. This is not only of relevance to allergic airway diseases such as asthma and allergic rhinitis, which are increasing in prevalence worldwide, but in many other diseases. The full impact any disruption of TGF-beta signalling may have in the development and persistence of allergic inflammatory airway diseases is yet to be fully realized and remains the subject of ongoing research. There has been a recent revival of interest in the role of regulatory T cells in controlling allergic inflammation. Evidence is emerging of a significant contribution by TGF-beta to this regulatory process. This review aims to summarize current knowledge relating to TGF-beta in relation to allergic inflammatory upper airways disease, and attempts to clarify some of the discrepancies and inconsistencies in this area. It also considers the therapeutic implications of novel TGF-beta therapy, including potential future applications in the treatment of nasal polyposis and reduction of post-operative scar tissue formation following endoscopic sinus surgery.
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Affiliation(s)
- R J Salib
- Division of Infection, Inflammation and Repair, School of Medicine, Southampton General Hospital, Southampton, UK.
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Role of TGF-β and FGF in the Treatment of Radiation-Impaired Wounds Using a Novel Drug Delivery System. Plast Reconstr Surg 2008; 122:1036-1045. [DOI: 10.1097/prs.0b013e3181858bf0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abstract
The evolutionarily conserved TGF-beta proteins are distributed ubiquitously throughout the body and have a role in almost every biological process. In immunity, TGF-beta has an important role in modulating immunity. Much is understood about the process of TGF-beta production as a latent molecule and of the consequences and the intercellular signaling of active TGF-beta binding to its receptors; however, there is little discussed between the production and activation of TGF-beta. This review focuses on what is understood about the biochemical and physiological processes of TGF-beta activation and identifies the gaps in understanding immune cell activation of TGF-beta. A mechanistic understanding of the process activating TGF-beta can lead to regulating multiple biological systems by enhancing or inhibiting TGF-beta activation.
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Affiliation(s)
- Andrew W Taylor
- Schepens Eye Research Institute, 20 Staniford Street, Boston, MA 02114, USA.
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Gordon KJ, Blobe GC. Role of transforming growth factor-beta superfamily signaling pathways in human disease. Biochim Biophys Acta Mol Basis Dis 2008; 1782:197-228. [PMID: 18313409 DOI: 10.1016/j.bbadis.2008.01.006] [Citation(s) in RCA: 490] [Impact Index Per Article: 30.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2007] [Revised: 01/22/2008] [Accepted: 01/23/2008] [Indexed: 12/14/2022]
Abstract
Transforming growth factor beta (TGF-beta) superfamily signaling pathways are ubiquitous and essential regulators of cellular processes including proliferation, differentiation, migration, and survival, as well as physiological processes, including embryonic development, angiogenesis, and wound healing. Alterations in these pathways, including either germ-line or somatic mutations or alterations in the expression of members of these signaling pathways often result in human disease. Appropriate regulation of these pathways is required at all levels, particularly at the ligand level, with either a deficiency or an excess of specific TGF-beta superfamily ligands resulting in human disease. TGF-beta superfamily ligands and members of these TGF-beta superfamily signaling pathways also have emerging roles as diagnostic, prognostic or predictive markers for human disease. Ongoing studies will enable targeting of TGF-beta superfamily signaling pathways for the chemoprevention and treatment of human disease.
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Affiliation(s)
- Kelly J Gordon
- Department of Pharmacology and Cancer Biology, Duke University, Durham, North Carolina, USA
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Karalis M, Pavlidis TE, Psarras K, Ballas K, Zaraboukas T, Rafailidis S, Symeonidis N, Marakis GN, Sakantamis AK. Effect of experimentally induced liver cirrhosis on wound healing of the post-extraction tooth socket in rats. Eur Surg Res 2008; 40:190-6. [PMID: 17998778 DOI: 10.1159/000110860] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2007] [Accepted: 07/09/2007] [Indexed: 02/05/2023]
Abstract
BACKGROUND Wound healing in liver cirrhosis is known to be impaired possibly due to liver insufficiency and subsequent malnutrition status; however, there is no study to examine healing effectiveness of the tooth socket following an extraction in such patients. MATERIALS AND METHODS Irreversible cirrhosis was induced in 30 Wistar rats by repetitive weekly doses of CCl(4) and continuous administration of phenobarbital in a 12-week course was monitored by body weight measurement and ascites development, and was proved histologically. One week later, cirrhotic and control rats were subjected to extractions of two maxillary grinders on each side, one side by simple method, the other by surgical method. Half of the animals of each subgroup were sacrificed on the 10th post-extraction day, whereas the other half on the 30th post-extraction day, and histological sections were examined from all tooth sockets for wound-healing activity. RESULTS A malnutrition status was detected in cirrhotic rats with significant difference in their body weight. Several histological parameters of socket healing were not statistically different between cirrhotic and control animals. However, a significant delay on epithelialization and cancellous bone formation was detected on the 10th post-extraction day for either simple or surgical extractions in cirrhotic animals. CONCLUSIONS Liver cirrhosis in rats provokes a significant delay on epithelialization and mature cancellous bone formation and consecutively on early socket wound healing after a tooth extraction.
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Affiliation(s)
- M Karalis
- Second Propedeutical Department of Surgery, Medical School, Aristotle University, Hippocration Hospital, Thessaloniki, Greece
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Abstract
Wound healing comprises an ordered sequence of events including cell migration and proliferation, synthesis of extracellular matrix, angiogenesis and remodelling. TGF-beta regulates many of these processes. Animal models are used to study healing of simple linear incision wounds and deeper dermal wounds under normal and impaired conditions. TGF-beta increases the rate of healing and the breaking strength of the repaired tissue. It also enhances angiogenesis and consequent blood flow to dermal wounds, partly by stimulating the local release of other growth factors. TGF-beta reverses the adverse affects of glucocorticoids on wound healing and thus may be useful in the treatment of chronic ulcers or wounds in patients whose normal responses have been impaired by therapy with steroids, radiation or other drugs.
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Affiliation(s)
- E P Amento
- Genentech, Inc, South San Francisco, CA 94080
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Schuster KM, Martens M, Goldenberg M, Tai C, Strande L, Hewitt CW. Production of a novel fibroblast-populated platelet matrix cocultured with keratinocytes. ACTA ACUST UNITED AC 2007; 13:1493-500. [PMID: 17518711 DOI: 10.1089/ten.2006.0282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
We have developed a new method for the production of a dermal matrix equivalent. Human platelets were used to dilute human fibroblasts. The platelet mix was placed in a cell culture well. Addition of 200 microL of a thrombin solution caused gel formation. Gels were overlaid with standard Iscove's growth medium supplemented with 10% fetal bovine serum, insulin, and N-2-hydroxyethylpiperazine-N'-2-ethanesulfonic acid buffer. Medium was exchanged regularly. Keratinocytes were plated on top of selected gels and elevated to the air-liquid interface. The gels were harvested weekly, fixed, cut, and stained with hematoxylin and eosin stains and immunostains for collagens I, III, and IV and cytokeratins. Digital image analysis was used to quantitate collagen production. Growth factors, including transforming growth factor-beta (TGF-beta), platelet-derived growth factor, and vitamin C were added. Staining identified fibroblasts within the gels with a surrounding fibrous matrix. Immunostaining for cytokeratin identified keratinocytes on the gel surface. Immunostaining revealed the fibrous matrix to be composed of collagen I and III and some collagen IV. Digital image analysis demonstrated that greater TGF-beta concentration resulted in greater collagen production. These differences were statistically significant. With development of this construct, a viable dermal/epidermal replacement may be possible. TGF-beta enhances collagen production by fibroblasts in this matrix.
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Affiliation(s)
- Kevin M Schuster
- Section of Trauma Surgical Critical Care and Surgical Emergencies, School of Medicine, Yale University, New Haven, Connecticut 06520, USA.
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Kaftan H, Herzog M, Miehe B, Hosemann W. Topical application of transforming growth factor-β1 in acute traumatic tympanic membrane perforations: an experimental study in rats. Wound Repair Regen 2006; 14:453-6. [PMID: 16939573 DOI: 10.1111/j.1743-6109.2006.00147.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
High transforming growth factor-beta1 (TGF-beta1) expression in combination with fibrotic scar was observed in human tympanic membranes containing a chronic perforation. The purpose of this study was to investigate whether application of exogenous TGF-beta1 to experimentally created tympanic membrane perforations might induce a nonhealing tympanic membrane perforation. Bilateral myringotomies were performed in 20 rats. In 10 animals, a single dose of TGF-beta1 (0.1 microg) was topically applied to the left tympanic membrane after perforation. In the second part of the study with 10 animals, repeated applications of TGF-beta1 at a higher concentration were tested. In both groups, the opposite ears received vehicle alone. Tympanic membranes were observed for a total of 5 weeks. The effect of TGF-beta1 on the healing of the tympanic membranes was evaluated by closure rates and histology. In the single application group, the healing process was not delayed. Repeated applications of TGF-beta1 did cause a faster perforation closure and a thicker tympanic membrane. Topical TGF-beta1 applied to a traumatic tympanic membrane perforation does not create a chronic perforation at the concentrations and modes of application used in this study.
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Affiliation(s)
- Holger Kaftan
- Department of Otorhinolaryngology and Head and Neck Surgery, Ernst Moritz Arndt University, Greifswald, Germany.
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46
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Yoo HG, Kim JS, Lee SR, Pyo HK, Moon HI, Lee JH, Kwon OS, Chung JH, Kim KH, Eun HC, Cho KH. Perifollicular Fibrosis: Pathogenetic Role in Androgenetic Alopecia. Biol Pharm Bull 2006; 29:1246-50. [PMID: 16755026 DOI: 10.1248/bpb.29.1246] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Androgenetic alopecia (AGA) is a dihydrotestosterone (DHT)-mediated process, characterized by continuous miniaturization of androgen reactive hair follicles and accompanied by perifollicular fibrosis of follicular units in histological examination. Testosterone (T: 10(-9)-10(-7) M) treatment increased the expression of type I procollagen at mRNA and protein level. Pretreatment of finasteride (10(-8) M) inhibited the T-induced type I procollagen expression at mRNA (40.2%) and protein levels (24.9%). T treatment increased the expression of transforming growth factor-beta 1 (TGF-beta1) at protein levels by 81.9% in the human scalp dermal fibroblasts (DFs). Pretreatment of finasteride decreased the expression of TGF-beta1 protein induced by an average of T (30.4%). The type I procollagen expression after pretreatment of neutralizing TGF-beta1 antibody (10 microg/ml) was inhibited by an average of 54.3%. Our findings suggest that T-induced TGF-beta1 and type I procollagen expression may contribute to the development of perifollicular fibrosis in the AGA, and the inhibitory effects on T-induced procollagen and TGF-beta1 expression may explain another possible mechanism how finasteride works in AGA.
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Affiliation(s)
- Hyeon Gyeong Yoo
- Department of Dermatology, Seoul National University College of Medicine, Laboratory of Cutaneous Aging and Hair Research, Clinical Research Institute, Seoul National University Hospital, and Institute of Dermatological Science, Seoul National University, Seoul, Korea
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47
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Gaissmaier C, Fritz J, Krackhardt T, Flesch I, Aicher WK, Ashammakhi N. Effect of human platelet supernatant on proliferation and matrix synthesis of human articular chondrocytes in monolayer and three-dimensional alginate cultures. Biomaterials 2005; 26:1953-60. [PMID: 15576169 DOI: 10.1016/j.biomaterials.2004.06.031] [Citation(s) in RCA: 89] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2004] [Accepted: 06/17/2004] [Indexed: 11/23/2022]
Abstract
Articular cartilage is rich in collagen type II fibres and proteoglycans and is characterized by low cell density. Chondrocytes have specific nutritional requirements and therefore cannot be expanded in vitro without the risk of generating fibroblastoid cells expressing type I collagen. Therefore, various growth conditions were tested for cartilage tissue engineering. Human platelets are a rich source of many growth factors including transforming growth factor-beta and platelet-derived growth factor. To investigate the effect of human platelet supernatant (hPS) on chondrocyte proliferation and differentiation, human articular biopsies obtained from three healthy donors. Chondrocytes were isolated and expanded separately in monolayer cultures and seeded in alginate beads in the presence and absence of hPS of 1% or 10% v/v concentration. Transcript levels of genes encoding chondrogenic factors were determined by quantitative reverse transcriptase-polymerase chain reaction. The deposition of types I and II collagen as well as proteoglycan was detected by indirect immunocytochemistry. Addition of hPS activated chondrocyte proliferation in monolayer cultures but induced a dedifferentiation of chondrocytes towards a fibroblast-like phenotype. The expression levels of mRNAs encoding type II collagen, aggrecan and bone morphogenetic protein-2 were reduced in all samples tested. Seeding chondrocytes in alginate beads in the presence of hPS generated a cell population capable of type II collagen expression, even though hPS induced considerable type I collagen expression as well. Differences (1% vs. 10% group, 1% vs. control, 10% vs. control) in the quantitative gene expression of types I and II collagen or of aggrecan were statistically significant (p<0.001). We conclude that addition of hPS may accelerate chondrocyte expansion but can lead to their dedifferentiation.
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Affiliation(s)
- C Gaissmaier
- BG Trauma Centre, Eberhard-Karls University, Tuebingen, Germany
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48
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Abstract
Cutaneous wounds inevitably heal with scars, which can be disfiguring and compromise function. In general, the greater the insult, the worse the scarring, although genetic make up, regional variations and age can influence the final result. Excessive scarring manifests as hypertrophic and keloid scars. At the other end of the spectrum are poorly healing chronic wounds, such as foot ulcers in diabetic patients and pressure sores. Current therapies to minimize scarring and accelerate wound healing rely on the optimization of systemic conditions, early wound coverage and closure of lacerations, and surgical incisions with minimal trauma to the surrounding skin. The possible benefits of topical therapies have also been assessed. Further major improvements in wound healing and scarring require an understanding of the molecular basis of this process. Promising strategies for modulating healing include the local administration of platelet derived growth factor (PDGF)-BB to accelerate the healing of chronic ulcers, and increasing the relative ratio of transforming growth factor (TGF)beta-3 to TGFbeta-1 and TGFbeta-2 in order to minimize scarring.
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Sumiyoshi K, Nakao A, Setoguchi Y, Okumura K, Ogawa H. Exogenous Smad3 accelerates wound healing in a rabbit dermal ulcer model. J Invest Dermatol 2004; 123:229-36. [PMID: 15191565 DOI: 10.1111/j.0022-202x.2004.22730.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Exogenous administration of transforming growth factor-beta (TGF-beta) improves wound healing by affecting cellular and molecular events involved in tissue repair. But mice with a deficiency of a key TGF-beta signaling intermediate, Smad3, paradoxically showed accelerated cutanenous wound healing, suggesting that endogenous Smad3 had inhibitory effect on cutaneous wound healing. Here we investigated the effect of exogenous expression of Smad3 in dermal fibroblasts on cutaneous wound healing. Subcutaneous injection of adenovirus-containing Smad3 complementary DNA (AdCMV-Smad3) targeting mainly dermal fibroblasts accelerated tissue repair following full-thickness dermal round wounds in rabbit ear as judged by the size of granulation tissue area, number of capillaries, and re-epithelialization rate of the wounds. Expressions of alpha-smooth muscle actin (alpha-SMA), vascular endothelial growth factor (VEGF), and fibroblast growth factor receptor were upregulated in the wounded area injected with AdCMV-Smad3. Consistent with the in vivo findings, overexpression of Smad3 induced alpha-SMA, VEGF, and TGF-beta1 expression and augmented chemotactic response in cultured dermal fibroblasts. Therefore, exogenous administration of Smad3 targeting dermal fibroblasts accelerated tissue repair in a rabbit dermal ulcer model by affecting fibroblast responses associated with wound healing. The results suggest that Smad3, when overexpressed in dermal fibroblasts, can promote wound healing.
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Affiliation(s)
- Koji Sumiyoshi
- Atopy (Allergy) Research Center, Juntendo University School of Medicine, Tokyo, Japan
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Boyne P, Jones SD. Demonstration of the Osseoinductive Effect of Bone Morphogenetic Protein Within Endosseous Dental Implants. IMPLANT DENT 2004; 13:180-4. [PMID: 15179095 DOI: 10.1097/01.id.0000127520.06443.42] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The purpose of this case report was to demonstrate the host osseous response in the maxilla after placing bone morphogenetic protein (BMP) within a specially designed implant. Under normal circumstances, it is usually necessary to wait from 4 to 6 months, or even longer in some cases, for osseous integration. Our objective was to assess the ability of BMP, which was carried on an absorbable collagen sponge in horizontal portals of the subject im plant,to affect the formation of bone in a Macaca fascicularis monkey. A control implant was loaded internally with autogenous bone recovered from the preparation of the osteotomy. The results demonstrated that osseous peri-implant healing occurs using BMP in this format.
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Affiliation(s)
- Phillip Boyne
- Department of Advanced Education, Oral and Maxillofacial Surgery, School of Dentistry, Loma Linda University, Loma Linda, California, USA
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