1
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Lam KH, Shihabeddin TZ, Awkal JA, Najjar AM, Miron-Mendoza M, Maruri DP, Varner VD, Petroll WM, Schmidtke DW. Effects of Topography and PDGF on the Response of Corneal Keratocytes to Fibronectin-Coated Surfaces. J Funct Biomater 2023; 14:217. [PMID: 37103307 PMCID: PMC10144166 DOI: 10.3390/jfb14040217] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 03/30/2023] [Accepted: 04/07/2023] [Indexed: 04/28/2023] Open
Abstract
During corneal wound healing, corneal keratocytes are exposed to both biophysical and soluble cues that cause them to transform from a quiescent state to a repair phenotype. How keratocytes integrate these multiple cues simultaneously is not well understood. To investigate this process, primary rabbit corneal keratocytes were cultured on substrates patterned with aligned collagen fibrils and coated with adsorbed fibronectin. After 2 or 5 days of culture, keratocytes were fixed and stained to assess changes in cell morphology and markers of myofibroblastic activation by fluorescence microscopy. Initially, adsorbed fibronectin had an activating effect on the keratocytes as evidenced by changes in cell shape, stress fiber formation, and expression of alpha-smooth muscle actin (α-SMA). The magnitude of these effects depended upon substrate topography (i.e., flat substrate vs aligned collagen fibrils) and decreased with culture time. When keratocytes were simultaneously exposed to adsorbed fibronectin and soluble platelet-derived growth factor-BB (PDGF-BB), the cells elongated and had reduced expression of stress fibers and α-SMA. In the presence of PDGF-BB, keratocytes plated on the aligned collagen fibrils elongated in the direction of the fibrils. These results provide new information on how keratocytes respond to multiple simultaneous cues and how the anisotropic topography of aligned collagen fibrils influences keratocyte behavior.
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Affiliation(s)
- Kevin H. Lam
- Department of Bioengineering, University of Texas at Dallas, Richardson, TX 75080, USA
| | - Tarik Z. Shihabeddin
- Department of Bioengineering, University of Texas at Dallas, Richardson, TX 75080, USA
| | - Jacob A. Awkal
- Department of Bioengineering, University of Texas at Dallas, Richardson, TX 75080, USA
| | - Alex M. Najjar
- Department of Bioengineering, University of Texas at Dallas, Richardson, TX 75080, USA
| | - Miguel Miron-Mendoza
- Department of Ophthalmology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Daniel P. Maruri
- Department of Bioengineering, University of Texas at Dallas, Richardson, TX 75080, USA
| | - Victor D. Varner
- Department of Bioengineering, University of Texas at Dallas, Richardson, TX 75080, USA
- Department of Surgery, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - W. Matthew Petroll
- Department of Ophthalmology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
- Department of Biomedical Engineering, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - David W. Schmidtke
- Department of Bioengineering, University of Texas at Dallas, Richardson, TX 75080, USA
- Department of Surgery, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
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2
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Burmeister DM, Supp DM, Clark RA, Tredget EE, Powell HM, Enkhbaatar P, Bohannon JK, Cancio LC, Hill DM, Nygaard RM. Advantages and Disadvantages of Using Small and Large Animals in Burn Research: Proceedings of the 2021 Research Special Interest Group. J Burn Care Res 2022; 43:1032-1041. [PMID: 35778269 DOI: 10.1093/jbcr/irac091] [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: 11/14/2022]
Abstract
Multiple animal species and approaches have been used for modeling different aspects of burn care, with some strategies considered more appropriate or translatable than others. On April 15, 2021, the Research Special Interest Group of the American Burn Association held a virtual session as part of the agenda for the annual meeting. The session was set up as a pro/con debate on the use of small versus large animals for application to four important aspects of burn pathophysiology: burn healing/conversion; scarring; inhalation injury; and sepsis. For each of these topics, 2 experienced investigators (one each for small and large animal models) described the advantages and disadvantages of using these preclinical models. The use of swine as a large animal model was a common theme due to anatomic similarities with human skin. The exception to this was a well-defined ovine model of inhalation injury; both of these species have larger airways which allow for incorporation of clinical tools such as bronchoscopes. However, these models are expensive and demanding from labor and resource standpoints. Various strategies have been implemented to make the more inexpensive rodent models appropriate for answering specific questions of interest in burns. Moreover, modelling burn-sepsis in large animals has proven difficult. It was agreed that the use of both small and large animal models have merit for answering basic questions about the responses to burn injury. Expert opinion and the ensuing lively conversations are summarized herein, which we hope will help inform experimental design of future research.
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Affiliation(s)
- David M Burmeister
- Uniformed Services University of the Health Sciences, Department of Medicine, Bethesda, MD, United States of America
| | - Dorothy M Supp
- Department of Surgery, University of Cincinnati College of Medicine, Cincinnati, OH, USA.,Scientific Staff, Shriners Children's Ohio, Dayton, OH, USA
| | - Richard A Clark
- Stony Brook University, Departments of Dermatology, Biomedical Engineering and Medicine, Stony Brook, NY, USA
| | - Edward E Tredget
- Firefighters' Burn Treatment Unit, Department of Surgery, 2D3.31 Mackenzie Health Sciences Centre, University of Alberta, Edmonton, AB, Canada
| | - Heather M Powell
- Department of Materials Science and Engineering, Department of Biomedical Engineering, The Ohio State University, Columbus, OH, USA.,Scientific Staff, Shriners Children's Ohio, Dayton, OH, USA
| | - Perenlei Enkhbaatar
- Department of Anesthesiology, Medical Branch, University of Texas, 301 University Boulevard, Galveston, TX, USA
| | - Julia K Bohannon
- Vanderbilt University Medical Center, Department of Anesthesiology, Department of Pathology, Microbiology, and Immunology, Nashville, TN, USA
| | - Leopoldo C Cancio
- United States Army Institute of Surgical Research, JBSA Fort Sam Houston, TX, USA
| | - David M Hill
- Firefighters' Burn Center, Regional One Health, 877 Jefferson Avenue, Memphis, TN, USA
| | - Rachel M Nygaard
- Department of Surgery, Hennepin Healthcare, Minneapolis, MN, USA
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3
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Sandora N, Fitria NA, Kusuma TR, Winarno GA, Tanjunga SF, Wardhana A. Amnion bilayer for dressing and graft replacement for delayed grafting of full-thickness burns; A study in a rat model. PLoS One 2022; 17:e0262007. [PMID: 35061768 PMCID: PMC8782387 DOI: 10.1371/journal.pone.0262007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Accepted: 12/15/2021] [Indexed: 11/19/2022] Open
Abstract
Burn is a common case in developing countries, with over half of fire-related deaths reported in Southeast Asia and full-thickness burns as a high mortality risk. Human amnion has been used as a wound dressing for centuries. In this study, a decellularised amnion overlaid with fibrin, “amnion bilayer (AB),” was used as a dressing immediately after burn and as a graft to replace the scar in Sprague-Dawley rats subjected to full-thickness burn model. The aim was to observe whether amnion bilayer can reduce damages in third-grade burn when skin replacement is deemed impossible. The burn was induced using an electrical solder, heated for 5 mins, and contacted on the rat’s bare skin for 20 s. AB was applied as a (i) dressing immediately after induction and graft after eschar removal. Two groups (n = 6) were compared: AB and Sofra-Tulle ®, the National Hospital of Indonesia (NHI) protocol. Sections were stained with hematoxylin and eosin and Masson trichrome stains. Immunohistochemistry labelling was used to indicate scars (α-smooth muscle actin [α-SMA] and collagen-1) and angiogenesis (von Willebrand factor). Also, the macrophages inflammatory protein-3α (MIP-3α) indicates an early inflammatory process. The post dressing of the AB group demonstrated hair follicle remains and adipose tissue development. The NHI group appeared with a denatured matrix. Complete healing was seen in the AB group after 28 days with skin appendages similar to normal, while the NHI group showed no appendages in the centre of the actively inflamed area. The α-SMA was found in both groups. Collagen-1 was highly expressed in the NHI group, which led to a scar. Angiogenesis was found more in the AB group. The AB group had shown the capacity to accelerate complete healing and recover skin appendages better than the current protocol.
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Affiliation(s)
- Normalina Sandora
- Faculty of Medicine, Universitas Riau, Pekanbaru, Indonesia
- Indonesian Medical Education and Research Institute (IMERI), Jakarta, Indonesia
| | - Nur Amalina Fitria
- Indonesian Medical Education and Research Institute (IMERI), Jakarta, Indonesia
| | - Tyas Rahmah Kusuma
- Indonesian Medical Education and Research Institute (IMERI), Jakarta, Indonesia
| | - Gammaditya Adhibarata Winarno
- Burn Unit, Cipto Mangunkusumo National General Hospital, Jakarta, Indonesia
- Department of Surgery, Plastic and Reconstructive Surgery Division, Cipto Mangunkusumo National General Hospital, Jakarta, Indonesia
| | - Sanjaya Faisal Tanjunga
- Burn Unit, Cipto Mangunkusumo National General Hospital, Jakarta, Indonesia
- Department of Surgery, Plastic and Reconstructive Surgery Division, Cipto Mangunkusumo National General Hospital, Jakarta, Indonesia
| | - Aditya Wardhana
- Burn Unit, Cipto Mangunkusumo National General Hospital, Jakarta, Indonesia
- Department of Surgery, Plastic and Reconstructive Surgery Division, Cipto Mangunkusumo National General Hospital, Jakarta, Indonesia
- Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
- * E-mail:
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4
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Smith RD, Carney BC, Garg G, Monger KW, Prindeze NJ, Shupp JW, Moffatt LT. Modeling Burn Progression Using Comb Burns: The Impact of Thermal Contact Duration on Model Outcomes. J Surg Res 2020; 260:155-162. [PMID: 33340869 DOI: 10.1016/j.jss.2020.11.068] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 10/02/2020] [Accepted: 11/15/2020] [Indexed: 01/19/2023]
Abstract
BACKGROUND Burn progression is a phenomenon that remains poorly characterized. The mechanisms of burn conversion are not completely understood, and consequently, both predictive diagnostic tools and interventions are limited. The rat comb burn model is a commonly used approach to study horizontal burn conversion. However, there is significant variability in how the model is performed. Skin contact duration, comb device heating method, comb heating duration, amount of pressure applied, the weight of the comb, and associated depth of burn are all variables that are heterogeneous in studies utilizing the model. MATERIALS AND METHODS Here, contact duration was examined to determine the impact the duration of burn delivery has on the conversion of interspaces in this model. Data from multiple experiments consisting of 10, 15, 20, 30, 40, and 45 s comb burns were compiled and assessed. Burns were made using combs heated in a 100°C dry bath and then monitored for 2 d. Interspace viability was assessed by digital and laser doppler imaging and biopsy procurement. RESULTS Laser Doppler Imaging and viable interspace measurements showed that as burn duration increased, the percentage of the viable interspace and interspace perfusion decreased. Additionally, a contact time of 30 s or greater was required to result in 100% interspace conversion. CONCLUSIONS These results demonstrate a need to better characterize and potentially standardize the rat comb burn model to reduce variation and maintain it as a valuable tool for controlled studies of the pathophysiology of burn wound progression.
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Affiliation(s)
- Robert D Smith
- Firefighters' Burn and Surgical Research Laboratory, MedStar Health Research Institute, Washington, District of Columbia
| | - Bonnie C Carney
- Firefighters' Burn and Surgical Research Laboratory, MedStar Health Research Institute, Washington, District of Columbia; Department of Biochemistry and Molecular Biology, Georgetown University, Washington, District of Columbia
| | - Gaurav Garg
- Firefighters' Burn and Surgical Research Laboratory, MedStar Health Research Institute, Washington, District of Columbia; Department of Surgery, MedStar Washington Hospital Center and MedStar Georgetown University Hospital, Washington, District of Columbia
| | - Kyle W Monger
- Firefighters' Burn and Surgical Research Laboratory, MedStar Health Research Institute, Washington, District of Columbia
| | - Nicholas J Prindeze
- Firefighters' Burn and Surgical Research Laboratory, MedStar Health Research Institute, Washington, District of Columbia; Department of Surgery, MedStar Washington Hospital Center and MedStar Georgetown University Hospital, Washington, District of Columbia
| | - Jeffrey W Shupp
- Firefighters' Burn and Surgical Research Laboratory, MedStar Health Research Institute, Washington, District of Columbia; Department of Biochemistry and Molecular Biology, Georgetown University, Washington, District of Columbia; The Burn Center, Department of Surgery, MedStar Washington Hospital Center, Washington, District of Columbia; Department of Surgery, Georgetown University School of Medicine, Washington, District of Columbia.
| | - Lauren T Moffatt
- Firefighters' Burn and Surgical Research Laboratory, MedStar Health Research Institute, Washington, District of Columbia; Department of Biochemistry and Molecular Biology, Georgetown University, Washington, District of Columbia; Department of Surgery, Georgetown University School of Medicine, Washington, District of Columbia
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5
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Fujita M, Sasada M, Iyoda T, Fukai F. Involvement of Integrin-Activating Peptides Derived from Tenascin-C in Cancer Aggression and New Anticancer Strategy Using the Fibronectin-Derived Integrin-Inactivating Peptide. Molecules 2020; 25:E3239. [PMID: 32708610 PMCID: PMC7396993 DOI: 10.3390/molecules25143239] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 07/11/2020] [Accepted: 07/13/2020] [Indexed: 02/07/2023] Open
Abstract
Matricellular proteins, which exist in association with the extracellular matrix (ECM) and ECM protein molecules, harbor functional sites within their molecular structures. These functional sites are released through proteolytic cleavage by inflammatory proteinases, such as matrix metalloproteinases (MMPs) and a disintegrin and metalloproteinase with thrombospondin motifs (ADAMTS), and the peptides containing these functional sites have unique biological activities that are often not detected in the parent molecules. We previously showed that tenascin-C (TNC) and plasma fibronectin (pFN), examples of matricellular proteins, have cryptic bioactive sites that have opposite effects on cell adhesion to the ECM. A peptide containing the bioactive site of TNC, termed TNIIIA2, which is highly released at sites of inflammation and in the tumor microenvironment (TME), has the ability to potently and persistently activate β1-integrins. In the opposite manner, the peptide FNIII14 containing the bioactive site of pFN has the ability to inactivate β1-integrins. This review highlights that peptide TNIIIA2 can act as a procancer factor and peptide FNIII14 can act as an anticancer agent, based on the regulation on β1-integrin activation. Notably, the detrimental effects of TNIIIA2 can be inhibited by FNIII14. These findings open the possibility for new therapeutic strategies based on the inactivation of β1-integrin by FNIII14.
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Affiliation(s)
- Motomichi Fujita
- Department of Molecular Patho-Physiology, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan; (M.F.); (M.S.)
| | - Manabu Sasada
- Department of Molecular Patho-Physiology, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan; (M.F.); (M.S.)
- Clinical Research Center in Hiroshima, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-Ku, Hiroshima 734-8551, Japan
| | - Takuya Iyoda
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, Sanyo-Onoda City University, 1-1-1 Daigaku-Doori, Sanyo-Onoda, Yamaguchi 756-0884, Japan
| | - Fumio Fukai
- Department of Molecular Patho-Physiology, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan; (M.F.); (M.S.)
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6
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Lin F, Prasad A, Weber-Fishkin S, Clark RA. Engineered Fibronectin Peptide Resists Elastase Digestion, Speeds Healing, and Attenuates Scarring in Porcine Burns. J Invest Dermatol 2020; 140:1480-1483. [DOI: 10.1016/j.jid.2019.10.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 10/09/2019] [Accepted: 10/28/2019] [Indexed: 11/25/2022]
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7
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de Castro Brás LE, Frangogiannis NG. Extracellular matrix-derived peptides in tissue remodeling and fibrosis. Matrix Biol 2020; 91-92:176-187. [PMID: 32438055 DOI: 10.1016/j.matbio.2020.04.006] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 04/29/2020] [Accepted: 04/29/2020] [Indexed: 12/26/2022]
Abstract
Alterations in the composition of the extracellular matrix (ECM) critically regulate the cellular responses in tissue repair, remodeling, and fibrosis. After injury, proteolytic degradation of ECM generates bioactive ECM fragments, named matricryptins, exposing cryptic sites with actions distinct from the parent molecule. Matricryptins contribute to the regulation of inflammatory, reparative, and fibrogenic cascades through effects on several different cell types both in acute and chronic settings. Fibroblasts play a major role in matricryptin generation not only as the main cellular source of ECM proteins, but also as producers of matrix-degrading proteases. Moreover, several matricryptins exert fibrogenic or reparative actions by modulating fibroblast phenotype and function. This review manuscript focuses on the mechanisms of matricyptin generation in injured and remodeling tissues with an emphasis on fibroblast-matricryptin interactions.
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Affiliation(s)
- Lisandra E de Castro Brás
- The Brody School of Medicine, East Carolina University, Department of Physiology, Greenville 27858 North Carolina.
| | - Nikolaos G Frangogiannis
- The Wilf Family Cardiovascular Research Institute, Department of Medicine (Cardiology), Albert Einstein College of Medicine, Bronx, New York
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8
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Song J, Li X, Li J. Emerging evidence for the roles of peptide in hypertrophic scar. Life Sci 2019; 241:117174. [PMID: 31843531 DOI: 10.1016/j.lfs.2019.117174] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 12/11/2019] [Accepted: 12/12/2019] [Indexed: 12/21/2022]
Abstract
Hypertrophic scar is a dermal fibroproliferative disorder characterized by excess collagen deposition. There are many existing treatment modalities, but none works perfectly in all individuals. Recently, evidence is increasing that peptides can play crucial roles in the prevention or treatment of hypertrophic scar. The peptides may be derived from growth factors, hormones, and intracellular products of proteolysis. In vitro and in vivo studies have revealed that a number of peptides, usually topically applied, have beneficial effects on fibroblasts in rat, mouse, hamster, pig and rabbit scar models. The length of such peptides typically ranges between 10 and 15 amino acids (aa). Peptides may reduce scar progenitors, prevent excessive scarring, decrease scar growth, speed re-epithelialization and promote scar maturation through multiple mechanisms. They may target TGF-β signaling, fibroblast function or collagen modulation, inflammation, renin angiotensin system, gap junction and other pathways. However, there is a paucity of evidence regarding specific binding sites for these peptides in scar models. Here, we review current research progress on the roles of peptides and underlying mechanisms in hypertrophic scar. We also discuss the clinical potential of peptides as therapeutic agents in scarring. Finally, the functions of several peptide-related compounds in hypertrophic scar are summarized.
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Affiliation(s)
- Jiajun Song
- Department of Dermatology, Women's Hospital of Nanjing Medical University (Nanjing Maternity and Child Health Care Hospital), 123rd Tianfei Street, Mochou Road, Nanjing 210004, China
| | - Xue Li
- Department of Dermatology, Women's Hospital of Nanjing Medical University (Nanjing Maternity and Child Health Care Hospital), 123rd Tianfei Street, Mochou Road, Nanjing 210004, China.
| | - Jingyun Li
- Nanjing Maternal and Child Health Medical Institute, Women's Hospital of Nanjing Medical University (Nanjing Maternity and Child Health Care Hospital), 123rd Tianfei Street, Mochou Road, Nanjing 210004, China.
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9
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A Matricryptic Conformation of the Integrin-Binding Domain of Fibronectin Regulates Platelet-Derived Growth Factor-Induced Intracellular Calcium Release. Cells 2019; 8:cells8111351. [PMID: 31671632 PMCID: PMC6912537 DOI: 10.3390/cells8111351] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 10/24/2019] [Accepted: 10/29/2019] [Indexed: 12/26/2022] Open
Abstract
Platelet-derived growth factor (PDGF) signaling is dysregulated in a wide variety of diseases, making PDGF an attractive therapeutic target. However, PDGF also affects numerous signaling cascades essential for tissue homeostasis, limiting the development of PDGF-based therapies that lack adverse side-effects. Recent studies showed that fibroblast-mediated assembly of extracellular matrix (ECM) fibronectin fibrils attenuates PDGF-induced intracellular calcium release by selectively inhibiting phosphoinositol 3-kinase (PI3K) activation while leaving other PDGF-mediated signaling cascades intact. In the present study, a series of recombinant fibronectin-derived fusion proteins were used to localize the sequences in fibronectin that are responsible for this inhibition. Results demonstrate that attenuation of PDGF-induced intracellular calcium release by the fibronectin matrix mimetic, FNIII1H,8-10 requires α5β1 integrin ligation, but is not dependent upon the matricryptic, heparin-binding site of FNIII1. Intact cell-binding fibronectin fragments were also unable to attenuate PDGF-induced intracellular calcium release. In contrast, a novel integrin-binding fragment that adopts an extended and aligned conformational state, inhibited both PI3K activation and intracellular calcium release in response to PDGF. Taken together, these studies provide evidence that attenuation of PDGF-induced intracellular calcium release by fibronectin is mediated by a novel conformation of the α5β1 integrin-binding, FNIII9-10 modules, that is expressed by fibrillar fibronectin.
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10
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Prasad A, Lin F, Clark RAF. Fibronectin-derived Epiviosamines enhance PDGF-BB-stimulated human dermal fibroblast migration in vitro and granulation tissue formation in vivo. Wound Repair Regen 2019; 27:634-649. [PMID: 31219655 DOI: 10.1111/wrr.12744] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Accepted: 05/28/2019] [Indexed: 01/01/2023]
Abstract
Fibronectin (FN) is a multimodular glycoprotein that is a critical component of the extracellular matrix (ECM) anlage during embryogenesis, morphogenesis, and wound repair. Our laboratory has previously described a family of FN-derived peptides collectively called "epiviosamines" that enhance platelet-derived growth factor-BB (PDGF-BB)-driven tissue cell survival, speed burn healing, and reduce scarring. In this study, we used an agarose drop outmigration assay to report that epiviosamines can enhance PDGF-BB-stimulated adult human dermal fibroblast (AHDF) outmigration in a dose-dependent manner. Furthermore, these peptides can, when delivered topically, stimulate granulation tissue formation in vivo. A thiol-derivatized hyaluronan hydrogel cross-linked with polyethyleneglycol diacrylate (PEGDA) was used to topically deliver a cyclized epiviosamine: cP12 and a cyclized engineered variant of cP12 termed cNP8 to porcine, full-thickness, excisional wounds. Both cP12 and cNP8 exhibited dose-dependent increases in granulation tissue formation at day 4, with 600 μM cNP8 significantly enhancing new granulation tissue compared to vehicle alone. In contrast to previous studies, this study suggests that epiviosamines can be used to increase granulation tissue formation without an exogenous supply of PDGF-BB or any cell-binding peptides. Thus, epiviosamine may be useful topically to increase granulation tissue formation in acute wounds.
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Affiliation(s)
- Atulya Prasad
- Department of Biomedical Engineering, Health Science Center T16-060, Stony Brook University, Stony Brook, New York, 11794-8165.,NeoMatrix Therapeutics, Inc., 25 Health Sciences Drive, Stony Brook, New York, 11790
| | - Fubao Lin
- Department of Biomedical Engineering, Health Science Center T16-060, Stony Brook University, Stony Brook, New York, 11794-8165.,NeoMatrix Therapeutics, Inc., 25 Health Sciences Drive, Stony Brook, New York, 11790
| | - Richard A F Clark
- Department of Biomedical Engineering, Health Science Center T16-060, Stony Brook University, Stony Brook, New York, 11794-8165.,Department of Dermatology, Health Science Center T16-060, Stony Brook University, Stony Brook, New York, 11794-8165.,Department of Medicine, Health Science Center T16-060, Stony Brook University, Stony Brook, New York, 11794-8165
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11
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Engineered delivery strategies for enhanced control of growth factor activities in wound healing. Adv Drug Deliv Rev 2019; 146:190-208. [PMID: 29879493 DOI: 10.1016/j.addr.2018.06.002] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 04/18/2018] [Accepted: 06/01/2018] [Indexed: 12/18/2022]
Abstract
Growth factors (GFs) are versatile signalling molecules that orchestrate the dynamic, multi-stage process of wound healing. Delivery of exogenous GFs to the wound milieu to mediate healing in an active, physiologically-relevant manner has shown great promise in laboratories; however, the inherent instability of GFs, accompanied with numerous safety, efficacy and cost concerns, has hindered the clinical success of GF delivery. In this article, we highlight that the key to overcoming these challenges is to enhance the control of the activities of GFs throughout the delivering process. We summarise the recent strategies based on biomaterials matrices and molecular engineering, which aim to improve the conditions of GFs for delivery (at the 'supply' end of the delivery), increase the stability and functions of GFs in extracellular matrix (in transportation to target cells), as well as enhance the GFs/receptor interaction on the cell membrane (at the 'destination' end of the delivery). Many of these investigations have led to encouraging outcomes in various in vitro and in vivo regenerative models with considerable translational potential.
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12
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Farrar CS, Hocking DC. Assembly of fibronectin fibrils selectively attenuates platelet-derived growth factor-induced intracellular calcium release in fibroblasts. J Biol Chem 2018; 293:18655-18666. [PMID: 30323067 PMCID: PMC6290149 DOI: 10.1074/jbc.ra118.004020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 10/08/2018] [Indexed: 01/24/2023] Open
Abstract
Cellular responses to platelet-derived growth factor (PDGF) are altered in a variety of pathological conditions, including cancers, fibroses, and vascular diseases, making PDGF-induced signaling pathways important therapeutic targets. The limited success of therapies designed to impact PDGF pathways may be overcome with a clearer understanding of how cells integrate signals from PDGF and the extracellular matrix (ECM). Here, we assessed the effects of fibronectin matrix assembly on the responsiveness of mesenchymal cells to PDGF. Our results indicate that fibroblast-mediated assembly of fibronectin fibrils attenuates intracellular calcium release in response to PDGF. The dose-dependent inhibition of PDGF-induced intracellular calcium release was specific to the ECM form of fibronectin. Further, a recombinant protein engineered to mimic ECM fibronectin similarly attenuated intracellular calcium release in response to PDGF. Of note, fibronectin attenuated the PDGF-calcium signaling axis at the level of phosphoinositide 3-kinase (PI3K) activation. Interestingly, ECM fibronectin did not alter other intracellular signals activated by PDGF, including activation of PDGF receptor β, AKT Ser/Thr kinase, phospholipase Cγ1, and extracellular signal-regulated kinase 1/2 (ERK1/2). Rather, fibronectin inhibited activation of the p55 regulatory subunit of PI3K in response to a variety of stimuli, indicating that ECM fibronectin selectively attenuates the intracellular calcium release cascade while leaving intact other PDGF signaling pathways. Selective regulation of calcium signaling by ECM fibronectin via the p55 regulatory subunit of PI3K represents a mechanism by which cells tune their response to PDGF and may therefore serve as a target to selectively regulate one branch of PDGF signaling.
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Affiliation(s)
| | - Denise C Hocking
- From the Department of Biomedical Engineering and
- Department of Pharmacology and Physiology, University of Rochester School of Medicine and Dentistry, Rochester, New York 14642
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13
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Mezzenga R, Mitsi M. The Molecular Dance of Fibronectin: Conformational Flexibility Leads to Functional Versatility. Biomacromolecules 2018; 20:55-72. [PMID: 30403862 DOI: 10.1021/acs.biomac.8b01258] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Fibronectin, a large multimodular protein and one of the major fibrillar components of the extracellular matrix, has been the subject of study for many decades and plays critical roles in embryonic development and tissue homeostasis. Moreover, fibronectin has been implicated in the pathology of many diseases, including cancer, and abnormal depositions of fibronectin have been identified in a number of amyloid and nonamyloid lesions. The ability of fibronectin to carry all these diverse functionalities depends on interactions with a large number of molecules, including adhesive and signaling cell surface receptors, other components of the extracellular matrix, and growth factors and cytokines. The regulation and integration of such large number of interactions depends on the modular architecture of fibronectin, which allows a large number of conformations, exposing or destroying different binding sites. In this Review, we summarize the current knowledge regarding the conformational flexibility of fibronectin, with an emphasis on how it regulates the ability of fibronectin to interact with various signaling molecules and cell-surface receptors and to form supramolecular assemblies and fibrillar structures.
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Affiliation(s)
- Raffaele Mezzenga
- Laboratory of Food and Soft Materials , ETH Zurich , 8092 Zurich , Switzerland
| | - Maria Mitsi
- Laboratory of Food and Soft Materials , ETH Zurich , 8092 Zurich , Switzerland
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Lin K, Lin F, Clark RA. Elastase Digestion of Fibronectin Releases an Epiviosamine Peptide with Fibroblast Growth and Survival Activity. J Invest Dermatol 2018; 138:2480-2483. [DOI: 10.1016/j.jid.2018.04.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Revised: 04/16/2018] [Accepted: 04/20/2018] [Indexed: 11/25/2022]
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15
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Frame MD, Lin F, Dewar AM, Clark RAF. Vasoactive effect of fibronectin-derived epiviosamine-1 and related peptides in quiescent and stress models. Microcirculation 2018; 24. [PMID: 28296053 DOI: 10.1111/micc.12369] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Accepted: 03/09/2017] [Indexed: 12/17/2022]
Abstract
OBJECTIVE Following thermal burn injury, plasma fibronectin degrades within the interstitium; one possible product is EVA-1, PSHISKYILRWRPK found within the FNIII1 . EVA-1 ameliorates thermal burn injury progression, and binds to and enhances PDGF-BB in promoting cell metabolism, growth and survival; shorter related peptides lose these abilities. Here we study the effect of EVA-1 and shorter peptides for their vasoactivity under quiescent and stress conditions. METHODS Using the hamster cheek pouch intravital microscopy model, five EVA-1 related peptides were applied to small arterioles via micropipette (10-16 -10-4 mol L-1 ) in quiescent tissue and after defined stress: nitric oxide or heat. RESULTS Peak dilation occurred with nanomolar doses (longer peptides) or below (shorter peptides), blocked by propranolol (beta-adrenergic receptor antagonist). Micromolar doses of the same peptides induced only constriction, not antagonized by phentolamine (alpha-adrenergic receptor antagonist). Scrambled variants of two peptides yielded only constriction, suggesting constriction might be due peptide charge. Each stressor caused a left shift in dilation response, blocked by carazolol. CONCLUSIONS Thus, this important region of FNIII1 contains sequences that have a gradation of biological functions dependent on the length of the peptide sequence, with increased efficacy for dilation following stressors.
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Affiliation(s)
- Mary D Frame
- Department of Biomedical Engineering, Stony Brook University, Stony Brook, NY, USA.,Department of Physiology and Biophysics, Stony Brook University, Stony Brook, NY, USA
| | - Fubao Lin
- Department of Biomedical Engineering, Stony Brook University, Stony Brook, NY, USA
| | - Anthony M Dewar
- Department of Biomedical Engineering, Stony Brook University, Stony Brook, NY, USA
| | - Richard A F Clark
- Department of Biomedical Engineering, Stony Brook University, Stony Brook, NY, USA.,Department of Dermatology, Stony Brook University, Stony Brook, NY, USA
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16
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Bor A, Nishijo M, Nishimaru H, Nakamura T, Tran NN, Van Le Q, Takamura Y, Matsumoto J, Nishino Y, Nishijo H. Effects of high fat diet and perinatal dioxin exposure on development of body size and expression of platelet-derived growth factor receptor β in the rat brain. J Integr Neurosci 2018; 16:453-470. [PMID: 28891521 DOI: 10.3233/jin-170025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Environmental exposure to dioxins, consumption of a high fat diet, and platelet-derived growth factor receptor β signaling in the brain affect feeding behavior, which is an important determinant of body growth. In the present study, we investigated the effects of prenatal exposure to 2,3,7,8-tetrachlorodibenzo-p-dioxin and high fact diet after weaning on body growth and expression of platelet-derived growth factor receptor β in the brain in rat pups. Subjects from the control and dioxin exposure groups were assigned to 1 of 3 different diet groups: standard diet, high fat diet in the juvenile period, or high fat diet in adulthood. Body weight gain rate in the juvenile high fat diet group and the length gain rate in the adult high fat diet group were greater than the corresponding values in the standard diet group only in male offspring, although the effects of dioxin exposure on growth were not significant. Consumption of a high fat diet decreased platelet-derived growth factor receptor β levels in the amygdala and hippocampus in both sexes compared to control groups, while 2,3,7,8-tetrachlorodibenzo-p-dioxin decreased platelet-derived growth factor receptor platelet-derived growth factor receptor β levels in the amygdala and striatum only in females receiving an high fat diet. Furthermore, platelet-derived growth factor receptor β levels in the hippocampus and platelet-derived growth factor receptor β striatum were inversely correlated with increases in body length, while changes in platelet-derived growth factor receptor β in the amygdala and nucleus accumbens were significantly correlated to body weight gain or body mass index. In conclusion, these findings suggest that these 2,3,7,8-tetrachlorodibenzo-p-dioxin and high fat diet-induced changes in body growth and feeding behaviors might be partially mediated by changes in brain platelet-derived growth factor receptor β levels.
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Affiliation(s)
- Amartuvshin Bor
- System Emotional Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan. E-mails: , , , , , ,
| | - Muneko Nishijo
- Department of Public Health and Epidemiology, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Ishikawa, 920-0293, Japan. E-mails: , ,
| | - Hiroshi Nishimaru
- System Emotional Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan. E-mails: , , , , , ,
| | - Tomoya Nakamura
- System Emotional Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan. E-mails: , , , , , ,
| | - Nghi Ngoc Tran
- Department of Public Health and Epidemiology, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Ishikawa, 920-0293, Japan. E-mails: , ,
| | - Quang Van Le
- System Emotional Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan. E-mails: , , , , , ,
| | - Yusaku Takamura
- System Emotional Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan. E-mails: , , , , , ,
| | - Jumpei Matsumoto
- System Emotional Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan. E-mails: , , , , , ,
| | - Yoshikazu Nishino
- Department of Public Health and Epidemiology, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Ishikawa, 920-0293, Japan. E-mails: , ,
| | - Hisao Nishijo
- System Emotional Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan. E-mails: , , , , , ,
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17
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Clark RAF, Fenner J, Sasson A, McClain SA, Singer AJ, Tonnesen MG. Blood vessel occlusion with erythrocyte aggregates causes burn injury progression-microvasculature dilation as a possible therapy. Exp Dermatol 2018; 27:625-629. [PMID: 29478253 DOI: 10.1111/exd.13518] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/14/2018] [Indexed: 12/28/2022]
Abstract
Burns are dynamic injuries characterized by progressive tissue death and continuous severe pain over the course of several days. The extent of burn injury progression determines the ultimate patient outcome. Initial burns result in a central zone of necrosis surrounded by a potentially viable zone of ischemia. Several mechanisms have been proposed to explain injury progression, including oxidant and cytokine stress resulting from either ischemia/reperfusion and/or inflammation, but no proven therapy has emerged. To address the unmet need to limit burn injury progression, the root cause of this process must be delineated. For this reason, we have recently focused on post-burn blood vessel occlusion, currently ascribed to microthrombi. We have found that blood vessel occlusion is initially, mainly and persistently caused by erythrocyte aggregation. Although thermal-induced cell necrosis is the immediate cause of cell death, apoptotic cells from persistent ischemia/anoxia, admixed with inflammatory cells, form a band between viable and nonviable tissue 24 hours later. The delayed cell death by apoptosis appears to be the main attractant for inflammatory cells. Finally, we posit that fibrinogen elevation arising from inflammation provides stimulus for additional erythrocyte aggregation, further extending blood vessel occlusion. In our view this persistent occlusion with resultant prolonged tissue ischemia/anoxia, not ischemia/reperfusion, is the root cause of burn injury progression concomitant with associated severe and persistent pain. Epiviosamines, a new class of peptides, appear to selectively dilate microvasculature, and may provide therapy for burn injury progression.
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Affiliation(s)
- Richard A F Clark
- Departments of Dermatology, School of Medicine, Stony Brook University, Stony Brook, NY, USA.,Biomedical Engineering, School of Medicine, Stony Brook University, Stony Brook, NY, USA
| | - Justine Fenner
- Departments of Dermatology, School of Medicine, Stony Brook University, Stony Brook, NY, USA
| | - Arielle Sasson
- Departments of Dermatology, School of Medicine, Stony Brook University, Stony Brook, NY, USA
| | - Steve A McClain
- Departments of Dermatology, School of Medicine, Stony Brook University, Stony Brook, NY, USA.,Emergency Medicine, School of Medicine, Stony Brook University, Stony Brook, NY, USA
| | - Adam J Singer
- Emergency Medicine, School of Medicine, Stony Brook University, Stony Brook, NY, USA
| | - Marcia G Tonnesen
- Departments of Dermatology, School of Medicine, Stony Brook University, Stony Brook, NY, USA.,Dermatology Section, Medicine Service, Veterans Affairs Medical Center, Northport, NY, USA
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18
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Effects of topical topiramate in wound healing in mice. Arch Dermatol Res 2018; 310:363-373. [DOI: 10.1007/s00403-018-1822-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 01/02/2018] [Accepted: 02/15/2018] [Indexed: 02/07/2023]
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19
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Jeong JY, Ibrahim M, Kim MJ, So K, Jeong YD, Park S, Kim M, Lee HJ. Comparisons of extracellular matrix-related gene expression levels in different adipose tissues from Korean cattle. Livest Sci 2017. [DOI: 10.1016/j.livsci.2017.02.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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20
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Serezani APM, Bozdogan G, Sehra S, Walsh D, Krishnamurthy P, Potchanant EAS, Nalepa G, Goenka S, Turner MJ, Spandau DF, Kaplan MH. IL-4 impairs wound healing potential in the skin by repressing fibronectin expression. J Allergy Clin Immunol 2017; 139:142-151.e5. [PMID: 27554818 PMCID: PMC5222746 DOI: 10.1016/j.jaci.2016.07.012] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 05/27/2016] [Accepted: 07/05/2016] [Indexed: 12/19/2022]
Abstract
BACKGROUND Atopic dermatitis (AD) is characterized by intense pruritis and is a common childhood inflammatory disease. Many factors are known to affect AD development, including the pleiotropic cytokine IL-4. Yet little is known regarding the direct effects of IL-4 on keratinocyte function. OBJECTIVE AND METHODS In this report RNA sequencing and functional assays were used to define the effect of the allergic environment on primary keratinocyte function and wound repair in mice. RESULTS Acute or chronic stimulation by IL-4 modified expression of more than 1000 genes expressed in human keratinocytes that are involved in a broad spectrum of nonoverlapping functions. Among the IL-4-induced changes, repression of fibronectin critically impaired the human keratinocyte wound response. Moreover, in mouse models of spontaneous and induced AD-like lesions, there was delayed re-epithelialization. Importantly, topical treatment with fibronectin restored the epidermal repair response. CONCLUSION Keratinocyte gene expression is critically shaped by IL-4, altering cell fate decisions, which are likely important for the clinical manifestations and pathology of allergic skin disease.
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Affiliation(s)
- Ana PM Serezani
- Department of Pediatrics, H.B. Wells Center for Pediatric Research and Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Gunseli Bozdogan
- Department of Pediatrics, H.B. Wells Center for Pediatric Research and Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Sarita Sehra
- Department of Pediatrics, H.B. Wells Center for Pediatric Research and Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Daniel Walsh
- Department of Pediatrics, H.B. Wells Center for Pediatric Research and Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Purna Krishnamurthy
- Department of Pediatrics, H.B. Wells Center for Pediatric Research and Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Elizabeth A Sierra Potchanant
- Department of Pediatrics, H.B. Wells Center for Pediatric Research and Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Indiana, USA
- Division of Pediatric Hematology-Oncology Bone Marrow Failure Program, Indiana University School of Medicine, Indianapolis, Indiana, USA
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Grzegorz Nalepa
- Department of Pediatrics, H.B. Wells Center for Pediatric Research and Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Indiana, USA
- Division of Pediatric Hematology-Oncology Bone Marrow Failure Program, Indiana University School of Medicine, Indianapolis, Indiana, USA
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Shreevrat Goenka
- Department of Pediatrics, H.B. Wells Center for Pediatric Research and Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Matthew J Turner
- Department of Dermatology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Dan F Spandau
- Department of Dermatology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Mark H Kaplan
- Department of Pediatrics, H.B. Wells Center for Pediatric Research and Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Indiana, USA
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21
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Hocking DC, Brennan JR, Raeman CH. A Small Chimeric Fibronectin Fragment Accelerates Dermal Wound Repair in Diabetic Mice. Adv Wound Care (New Rochelle) 2016; 5:495-506. [PMID: 27867754 PMCID: PMC5105350 DOI: 10.1089/wound.2015.0666] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 09/23/2015] [Indexed: 12/30/2022] Open
Abstract
Objective: During wound repair, soluble fibronectin is converted into biologically active, insoluble fibrils via a cell-mediated process. This fibrillar, extracellular matrix (ECM) form of fibronectin stimulates cell processes critical to tissue repair. Nonhealing wounds show reduced levels of ECM fibronectin fibrils. The objective of this study was to produce a small, recombinant wound supplement with the biological activity of insoluble fibronectin fibrils. Approach: A chimeric fibronectin fragment was produced by inserting the integrin-binding Arg-Gly-Asp (RGD) loop from the tenth type III repeat of fibronectin (FNIII10) into the analogous site within the heparin-binding, bioactive fragment of the first type III repeat (FNIII1H). FNIII1HRGD was tested for its ability to support cell functions necessary for wound healing, and then evaluated for its capacity to accelerate healing of full-thickness dermal wounds in diabetic mice. Results:In vitro, FNIII1HRGD supported cell adhesion, proliferation, and ECM fibronectin deposition. Application of FNIII1HRGD to dermal wounds of diabetic mice significantly enhanced wound closure compared with controls (73.9% ±4.1% vs. 58.1% ±4.7% closure on day 9, respectively), and significantly increased granulation tissue thickness (2.88 ± 0.75-fold increase over controls on day 14). Innovation: Recombinant proteins designed to functionally mimic the ECM form of fibronectin provide a novel therapeutic approach to circumvent diminished fibronectin fibril formation by delivering ECM fibronectin signals in a soluble form to chronic wounds. Conclusion: A small, chimeric fibronectin protein was developed. FNIII1HRGD demonstrated enhanced bioactivity in vitro and stimulated wound repair in a murine model of chronic wounds.
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Affiliation(s)
- Denise C. Hocking
- Department of Biomedical Engineering, University of Rochester, Rochester, New York
- Department of Pharmacology and Physiology, School of Medicine and Dentistry, University of Rochester, Rochester, New York
| | - James R. Brennan
- Department of Biomedical Engineering, University of Rochester, Rochester, New York
| | - Carol H. Raeman
- Department of Biomedical Engineering, University of Rochester, Rochester, New York
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22
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Zhao X, Hao J, Duan H, Rong Z, Li F. Phosphoinositide 3-kinase/protein kinase B/periostin mediated platelet-derived growth factor-induced cell proliferation and extracellular matrix production in lupus nephritis. Exp Biol Med (Maywood) 2016; 242:160-168. [PMID: 27590500 DOI: 10.1177/1535370216668050] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
In the present study, the effect and mechanism of periostin on renal proliferation and extracellular matrix accumulation of lupus mice were investigated. MRL /lpr mice, known as lupus mice, were revealed to show enhanced periostin, proliferating cell nuclear antigen (PCNA), and extracellular matrix accumulation in the kidney accompanied by increased serum platelet-derived growth factor (PDGF). Again, cultured mouse mesangial cells (MMCs) were treated with PDGF, then periostin, and PCNA and secreted fibronectin were detected. The results showed that intracellular periostin and PCNA were respectively enhanced by 2.691 and 2.308 times in PDGF-treated MMC cells at 6 h after stimulation. In addition, secreted fibronectin was increased by 1.442 times. Next, the transfection of periostin shRNA vector in PDGF-stimulated MMC cells effectively suppressed periostin, PCNA and secreted fibronectin by 45.27%, 47.75%, and 39.95%, compared with PDGF-stimulated cells transfected with control vector. Furthermore, it was found that PDGF increased the expression of phospho-Akt (Ser 473) from 30 min to 6 h in MMCs. LY294002 effectively inhibited phospho-Akt (Ser 473) expression caused by PDGF stimulation. Then, periostin, PCNA, and fibronectin were respectively decreased by 69.61%, 46.00%, and 46.20%. In the end, phosphoinositide 3-kinase/protein kinase B/periostin was suggested to mediate PDGF-induced cell proliferation and extracellular matrix production in lupus nephritis.
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Affiliation(s)
- Xue Zhao
- 1 Department of Pathology, Hebei Medical University, Shijiazhuang 050017, China.,2 Department of Pediatrics, the 2nd Affiliated Hospital of Hebei Medical University, Shijiazhuang 050017, China
| | - Jun Hao
- 1 Department of Pathology, Hebei Medical University, Shijiazhuang 050017, China
| | - Huijun Duan
- 1 Department of Pathology, Hebei Medical University, Shijiazhuang 050017, China
| | - Zanhua Rong
- 2 Department of Pediatrics, the 2nd Affiliated Hospital of Hebei Medical University, Shijiazhuang 050017, China
| | - Fan Li
- 1 Department of Pathology, Hebei Medical University, Shijiazhuang 050017, China
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23
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Asif B, Rahim A, Fenner J, Lin F, Hirth D, Hassani J, McClain SA, Singer AJ, Tonnesen MG, Clark RA. Blood vessel occlusion in peri-burn tissue is secondary to erythrocyte aggregation and mitigated by a fibronectin-derived peptide that limits burn injury progression. Wound Repair Regen 2016; 24:501-13. [DOI: 10.1111/wrr.12430] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 03/14/2016] [Accepted: 03/21/2016] [Indexed: 01/21/2023]
Affiliation(s)
| | | | | | - Fubao Lin
- Department of Biomedical Engineering
| | | | | | - Steven A. McClain
- Department of Dermatology
- Department of Emergency Medicine; Stony Brook University; Stony Brook New York
| | - Adam J. Singer
- Department of Emergency Medicine; Stony Brook University; Stony Brook New York
| | - Marcia G. Tonnesen
- Department of Dermatology
- Dermatology Section; Medicine Service, Northport VAMC; Northport New York
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Abstract
Defective vascular and cardiomyocyte function are implicated in the development and progression of both heart failure with reduced and preserved ejection fraction. Any treatment option that augments these myocardial processes may therefore be of significant value. The platelet-derived growth factor (PDGF) family is involved in a wide range of growth processes and plays a key role in both regulating angiogenesis and mesenchymal cell development. Thus, PDGF may serve as a potent therapy for heart failure. While numerous animal studies have demonstrated beneficial cardiovascular effects of growth factor therapy, promising laboratory data has not yet translated to effective therapies. In this review, we outline the biological role of PDGF and summarize previous studies that have focused on the cardiovascular effects of normal PDGF signaling, administration of PDGF, and the effects of PDGF on stem cell therapy.
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Affiliation(s)
- John Medamana
- School of Medicine, Stony Brook University, Stony Brook, NY, 11794-8165, USA
| | - Richard A Clark
- Department of Dermatology, Health Science Center T16-060, Stony Brook University, Stony Brook, NY, 11794-8165, USA.
| | - Javed Butler
- Division of Cardiology, Health Science Center T16-080, Stony Brook University, Stony Brook, NY, 11794-8165, USA.
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25
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Sawicka KM, Seeliger M, Musaev T, Macri LK, Clark RA. Fibronectin Interaction and Enhancement of Growth Factors: Importance for Wound Healing. Adv Wound Care (New Rochelle) 2015; 4:469-478. [PMID: 26244103 DOI: 10.1089/wound.2014.0616] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Accepted: 01/30/2015] [Indexed: 12/21/2022] Open
Abstract
Significance: This critical review focuses on interactions between cells, fibronectin (FN), and growth factors (GF). Recent Advances: Initially, the extracellular matrix (ECM) was thought to serve simply as a reservoir for GFs that would be released as soluble ligands during proteolytic degradation of ECM. This view was rather quickly extended by the observation that ECM could concentrate GFs to the pericellular matrix for more efficient presentation to cell surface receptors. However, recent reports support much more complex interactions among GFs and ECM molecules, particularly FN, and the way these interactions can fine-tune cell responses to the microenvironment. Critical Issues: Wounds that are unable to synthesize and sustain a functional ECM cannot optimally benefit from endogenous or exogenous GFs. Therefore, GF treatments have recently focused on utilizing ECM molecules as delivery vehicles. Thus, ECM can influence GF stability and activity, and GFs can modulate the ECM activity. Hence, both individually and together, ECM and GFs modulate cells that in turn control the type and level of GFs and ECM in the pericellular environment that ultimately results in new tissue generation. Although many ECM components are important for optimal tissue regeneration and wound healing, FN stands out as absolutely critical not only for wound healing and tissue regeneration but also for embryogenesis and morphogenesis. Future Directions: Understanding ECM/GF interactions will greatly facilitate our understanding of normal wound repair and regeneration, the failure of wounds to heal, and how the latter can be salvaged with proper ECM/GF combinations.
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Affiliation(s)
- Katarzyna M. Sawicka
- Department of Dermatology, Stony Brook School of Medicine, Stony Brook, New York
| | - Markus Seeliger
- Department of Pharmacological Sciences, Stony Brook University, Stony Brook, New York
| | - Tagai Musaev
- Albert Einstein College of Medicine, New York City, New York
| | - Lauren K. Macri
- New Jersey Center for Biomaterials Rutgers, The State University of New Jersey, Piscataway, New Jersey
| | - Richard A.F. Clark
- Department of Dermatology, Stony Brook School of Medicine, Stony Brook, New York
- Department of Biomedical Engineering, Stony Brook University, Stony Brook, New York
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26
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Abstract
In this issue, Lin et al. report the discovery of P12, a 14 amino acid peptide from the first fibronectin (FN) type III domain of FN, which has the capability of enhancing cell survival in culture and improving wound healing in rat skin. P12 belongs to a new class of bioactive peptides that they have named epiviosamines. Epiviosamines may have clinical applications.
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27
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Affiliation(s)
- XingGuo Cheng
- Microencapsulation & Nanomaterials Department, Southwest Research Institute, 6220 Culebra Road, San Antonio, TX 78238, USA
| | - James J Yoo
- Wake Forest Institute for Regenerative Medicine, Medical Center Boulevard Winston-Salem, NC 27157, USA
| | - Robert G Hale
- Colonel, Dental Corps Commander, US Army Dental & Trauma Research Detachment, US Army Institute of Surgical Research, 3698 Chambers Pass Suite B, Fort Sam Houston, TX 78234, USA
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28
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Zhu J, Lin F, Brown DA, Clark RAF. A fibronectin peptide redirects PDGF-BB/PDGFR complexes to macropinocytosis-like internalization and augments PDGF-BB survival signals. J Invest Dermatol 2013; 134:921-929. [PMID: 24304816 PMCID: PMC3961502 DOI: 10.1038/jid.2013.463] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Revised: 09/14/2013] [Accepted: 09/26/2013] [Indexed: 12/25/2022]
Abstract
Growth factor-binding domains identified in various extracellular matrix (ECM) proteins have been shown to regulate growth factor activity in many ways. Recently we identified a fibronectin peptide (P12) that can bind platelet-derived growth factor BB (PDGF-BB) and promote adult human dermal fibroblast (AHDF) survival under stress. In vivo experiments in a porcine burn injury model showed that P12 limited burn injury progression, suggesting an active role in tissue survival. In this report, we explored the molecular mechanism of this peptide in ADHF under nutrient deprivation. Our results showed that P12 acted like some cell penetrating peptides (CPPs) in that it redirected ligand-bound PDGFR from the clathrin-dependent endocytic pathway to a slower, macropinocytosis-like pathway. P12 slowed internalization and degradation of PDGF-BB, augmented its survival signals, and promoted cell survival after nutrient-removal. Our findings demonstrate a mechanism for a potential therapeutic peptide that increases cell and tissue survival by acting as a cofactor to PDGF-BB.
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Affiliation(s)
- Jia Zhu
- Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, New York, USA
| | - Fubao Lin
- Department of Biomedical Engineering, Stony Brook University, Stony Brook, New York, USA
| | - Deborah A Brown
- Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, New York, USA
| | - Richard A F Clark
- Department of Biomedical Engineering, Stony Brook University, Stony Brook, New York, USA; Department of Dermatology, Stony Brook University, Stony Brook, New York, USA.
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