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Di Francesco D, Marcello E, Casarella S, Copes F, Chevallier P, Carmagnola I, Mantovani D, Boccafoschi F. Characterization of a decellularized pericardium extracellular matrix hydrogel for regenerative medicine: insights on animal-to-animal variability. Front Bioeng Biotechnol 2024; 12:1452965. [PMID: 39205858 PMCID: PMC11350490 DOI: 10.3389/fbioe.2024.1452965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2024] [Accepted: 08/05/2024] [Indexed: 09/04/2024] Open
Abstract
In the past years, the use of hydrogels derived from decellularized extracellular matrix (dECM) for regenerative medicine purposes has significantly increased. The intrinsic bioactive and immunomodulatory properties indicate these materials as promising candidates for therapeutical applications. However, to date, limitations such as animal-to-animal variability still hinder the clinical translation. Moreover, the choice of tissue source, decellularization and solubilization protocols leads to differences in dECM-derived hydrogels. In this context, detailed characterization of chemical, physical and biological properties of the hydrogels should be performed, with attention to how these properties can be affected by animal-to-animal variability. Herein, we report a detailed characterization of a hydrogel derived from the decellularized extracellular matrix of bovine pericardium (dBP). Protein content, rheological properties, injectability, surface microstructure, in vitro stability and cytocompatibility were evaluated, with particular attention to animal-to-animal variability. The gelation process showed to be thermoresponsive and the obtained dBP hydrogels are injectable, porous, stable up to 2 weeks in aqueous media, rapidly degrading in enzymatic environment and cytocompatible, able to maintain cell viability in human mesenchymal stromal cells. Results from proteomic analysis proved that dBP hydrogels are highly rich in composition, preserving bioactive proteoglycans and glycoproteins in addition to structural proteins such as collagen. With respect to the chemical composition, animal-to-animal variability was shown, but the biological properties were not affected, which remained consistent in different batches. Taken together these results show that dBP hydrogels are excellent candidates for regenerative medicine applications.
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Affiliation(s)
- Dalila Di Francesco
- Laboratory for Biomaterials and Bioengineering, Canada Research Chair Tier I for the Innovation in Surgery, Department of Min-Met-Materials Engineering and Regenerative Medicine, CHU de Quebec Research Center, Laval University, Quebec, QC, Canada
- Department of Health Sciences, University of Piemonte Orientale “A. Avogadro”, Novara, Italy
| | - Elena Marcello
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Torino, Italy
- Polito BioMed Lab, Politecnico di Torino, Torino, Italy
| | - Simona Casarella
- Department of Health Sciences, University of Piemonte Orientale “A. Avogadro”, Novara, Italy
| | - Francesco Copes
- Laboratory for Biomaterials and Bioengineering, Canada Research Chair Tier I for the Innovation in Surgery, Department of Min-Met-Materials Engineering and Regenerative Medicine, CHU de Quebec Research Center, Laval University, Quebec, QC, Canada
| | - Pascale Chevallier
- Laboratory for Biomaterials and Bioengineering, Canada Research Chair Tier I for the Innovation in Surgery, Department of Min-Met-Materials Engineering and Regenerative Medicine, CHU de Quebec Research Center, Laval University, Quebec, QC, Canada
| | - Irene Carmagnola
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Torino, Italy
- Polito BioMed Lab, Politecnico di Torino, Torino, Italy
| | - Diego Mantovani
- Laboratory for Biomaterials and Bioengineering, Canada Research Chair Tier I for the Innovation in Surgery, Department of Min-Met-Materials Engineering and Regenerative Medicine, CHU de Quebec Research Center, Laval University, Quebec, QC, Canada
| | - Francesca Boccafoschi
- Department of Health Sciences, University of Piemonte Orientale “A. Avogadro”, Novara, Italy
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Rehan IF, Elnagar A, Zigo F, Sayed-Ahmed A, Yamada S. Biomimetic strategies for the deputization of proteoglycan functions. Front Cell Dev Biol 2024; 12:1391769. [PMID: 39170918 PMCID: PMC11337302 DOI: 10.3389/fcell.2024.1391769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Accepted: 07/15/2024] [Indexed: 08/23/2024] Open
Abstract
Proteoglycans (PGs), which have glycosaminoglycan chains attached to their protein cores, are essential for maintaining the morphology and function of healthy body tissues. Extracellular PGs perform various functions, classified into the following four categories: i) the modulation of tissue mechanical properties; ii) the regulation and protection of the extracellular matrix; iii) protein sequestration; and iv) the regulation of cell signaling. The depletion of PGs may significantly impair tissue function, encompassing compromised mechanical characteristics and unregulated inflammatory responses. Since PGs play critical roles in the function of healthy tissues and their synthesis is complex, the development of PG mimetic molecules that recapitulate PG functions for tissue engineering and therapeutic applications has attracted the interest of researchers for more than 20 years. These approaches have ranged from semisynthetic graft copolymers to recombinant PG domains produced by cells that have undergone genetic modifications. This review discusses some essential extracellular PG functions and approaches to mimicking these functions.
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Affiliation(s)
- Ibrahim F. Rehan
- Department of Husbandry and Development of Animal Wealth, Faculty of Veterinary Medicine, Menoufia University, Shebin Alkom, Egypt
- Department of Pathobiochemistry, Faculty of Pharmacy, Meijo University, Nagoya, Aichi, Japan
| | - Asmaa Elnagar
- Department of Pathobiochemistry, Faculty of Pharmacy, Meijo University, Nagoya, Aichi, Japan
| | - František Zigo
- Department of Animal Nutrition and Husbandry, University of Veterinary Medicine and Pharmacy, Košice, Slovakia
| | - Ahmed Sayed-Ahmed
- Department of Anatomy and Embryology, Faculty of Veterinary Medicine, Menoufia University, Shebin Alkom, Egypt
| | - Shuhei Yamada
- Department of Pathobiochemistry, Faculty of Pharmacy, Meijo University, Nagoya, Aichi, Japan
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3
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Melrose J. Keratan sulfate, an electrosensory neurosentient bioresponsive cell instructive glycosaminoglycan. Glycobiology 2024; 34:cwae014. [PMID: 38376199 PMCID: PMC10987296 DOI: 10.1093/glycob/cwae014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 02/12/2024] [Accepted: 02/13/2024] [Indexed: 02/21/2024] Open
Abstract
The roles of keratan sulfate (KS) as a proton detection glycosaminoglycan in neurosensory processes in the central and peripheral nervous systems is reviewed. The functional properties of the KS-proteoglycans aggrecan, phosphacan, podocalyxcin as components of perineuronal nets in neurosensory processes in neuronal plasticity, cognitive learning and memory are also discussed. KS-glycoconjugate neurosensory gels used in electrolocation in elasmobranch fish species and KS substituted mucin like conjugates in some tissue contexts in mammals need to be considered in sensory signalling. Parallels are drawn between KS's roles in elasmobranch fish neurosensory processes and its roles in mammalian electro mechanical transduction of acoustic liquid displacement signals in the cochlea by the tectorial membrane and stereocilia of sensory inner and outer hair cells into neural signals for sound interpretation. The sophisticated structural and functional proteins which maintain the unique high precision physical properties of stereocilia in the detection, transmittance and interpretation of acoustic signals in the hearing process are important. The maintenance of the material properties of stereocilia are essential in sound transmission processes. Specific, emerging roles for low sulfation KS in sensory bioregulation are contrasted with the properties of high charge density KS isoforms. Some speculations are made on how the molecular and electrical properties of KS may be of potential application in futuristic nanoelectronic, memristor technology in advanced ultrafast computing devices with low energy requirements in nanomachines, nanobots or molecular switches which could be potentially useful in artificial synapse development. Application of KS in such innovative areas in bioregulation are eagerly awaited.
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Affiliation(s)
- James Melrose
- Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW 2052, Australia
- Raymond Purves Laboratory, Institute of Bone and Joint Research, Kolling Institute of Medical Research, Northern Sydney Local Health District, Royal North Shore Hospital, St. Leonards, NSW 2065, Australia
- Sydney Medical School, Northern, University of Sydney at Royal North Shore Hospital, St. Leonards, NSW 2065, Australia
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Yang P, Lu Y, Gou W, Qin Y, Tan J, Luo G, Zhang Q. Glycosaminoglycans' Ability to Promote Wound Healing: From Native Living Macromolecules to Artificial Biomaterials. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2305918. [PMID: 38072674 PMCID: PMC10916610 DOI: 10.1002/advs.202305918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 10/25/2023] [Indexed: 03/07/2024]
Abstract
Glycosaminoglycans (GAGs) are important for the occurrence of signaling molecules and maintenance of microenvironment within the extracellular matrix (ECM) in living tissues. GAGs and GAG-based biomaterial approaches have been widely explored to promote in situ tissue regeneration and repair by regulating the wound microenvironment, accelerating re-epithelialization, and controlling ECM remodeling. However, most approaches remain unacceptable for clinical applications. To improve insights into material design and clinical translational applications, this review highlights the innate roles and bioactive mechanisms of native GAGs during in situ wound healing and presents common GAG-based biomaterials and the adaptability of application scenarios in facilitating wound healing. Furthermore, challenges before the widespread commercialization of GAG-based biomaterials are shared, to ensure that future designed and constructed GAG-based artificial biomaterials are more likely to recapitulate the unique and tissue-specific profile of native GAG expression in human tissues. This review provides a more explicit and clear selection guide for researchers designing biomimetic materials, which will resemble or exceed their natural counterparts in certain functions, thereby suiting for specific environments or therapeutic goals.
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Affiliation(s)
- Peng Yang
- Institute of Burn ResearchState Key Laboratory of TraumaBurn and Combined InjurySouthwest HospitalThird Military Medical UniversityChongqing400038China
| | - Yifei Lu
- Institute of Burn ResearchState Key Laboratory of TraumaBurn and Combined InjurySouthwest HospitalThird Military Medical UniversityChongqing400038China
| | - Weiming Gou
- Institute of Burn ResearchState Key Laboratory of TraumaBurn and Combined InjurySouthwest HospitalThird Military Medical UniversityChongqing400038China
| | - Yiming Qin
- Department of Dermatology and Laboratory of DermatologyClinical Institute of Inflammation and ImmunologyFrontiers Science Center for Disease‐Related Molecular NetworkWest China HospitalSichuan UniversityChengdu610041China
| | - Jianglin Tan
- Institute of Burn ResearchState Key Laboratory of TraumaBurn and Combined InjurySouthwest HospitalThird Military Medical UniversityChongqing400038China
| | - Gaoxing Luo
- Institute of Burn ResearchState Key Laboratory of TraumaBurn and Combined InjurySouthwest HospitalThird Military Medical UniversityChongqing400038China
| | - Qing Zhang
- Institute of Burn ResearchState Key Laboratory of TraumaBurn and Combined InjurySouthwest HospitalThird Military Medical UniversityChongqing400038China
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Miguez PA, Bash E, Musskopf ML, Tuin SA, Rivera-Concepcion A, Chapple ILC, Liu J. Control of tissue homeostasis by the extracellular matrix: Synthetic heparan sulfate as a promising therapeutic for periodontal health and bone regeneration. Periodontol 2000 2024; 94:510-531. [PMID: 37614159 PMCID: PMC10891305 DOI: 10.1111/prd.12515] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/13/2023] [Accepted: 07/22/2023] [Indexed: 08/25/2023]
Abstract
Proteoglycans are core proteins associated with carbohydrate/sugar moieties that are highly variable in disaccharide composition, which dictates their function. These carbohydrates are named glycosaminoglycans, and they can be attached to proteoglycans or found free in tissues or on cell surfaces. Glycosaminoglycans such as hyaluronan, chondroitin sulfate, dermatan sulfate, keratan sulfate, and heparin/heparan sulfate have multiple functions including involvement in inflammation, immunity and connective tissue structure, and integrity. Heparan sulfate is a highly sulfated polysaccharide that is abundant in the periodontium including alveolar bone. Recent evidence supports the contention that heparan sulfate is an important player in modulating interactions between damage associated molecular patterns and inflammatory receptors expressed by various cell types. The structure of heparan sulfate is reported to dictate its function, thus, the utilization of a homogenous and structurally defined heparan sulfate polysaccharide for modulation of cell function offers therapeutic potential. Recently, a chemoenzymatic approach was developed to allow production of many structurally defined heparan sulfate carbohydrates. These oligosaccharides have been studied in various pathological inflammatory conditions to better understand their function and their potential application in promoting tissue homeostasis. We have observed that specific size and sulfation patterns can modulate inflammation and promote tissue maintenance including an anabolic effect in alveolar bone. Thus, new evidence provides a strong impetus to explore heparan sulfate as a potential novel therapeutic agent to treat periodontitis, support alveolar bone maintenance, and promote bone formation.
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Affiliation(s)
- PA Miguez
- Division of Comprehensive Oral Health - Periodontology, Adams School of Dentistry, University of North Carolina at Chapel Hill, NC, USA
| | - E Bash
- Division of Comprehensive Oral Health - Periodontology, Adams School of Dentistry, University of North Carolina at Chapel Hill, NC, USA
| | - ML Musskopf
- Division of Comprehensive Oral Health - Periodontology, Adams School of Dentistry, University of North Carolina at Chapel Hill, NC, USA
| | - SA Tuin
- Oral and Craniofacial Health Sciences, Adams School of Dentistry, University of North Carolina at Chapel Hill, NC, USA
| | - A Rivera-Concepcion
- Oral and Craniofacial Health Sciences, Adams School of Dentistry, University of North Carolina at Chapel Hill, NC, USA
| | - ILC Chapple
- Periodontal Research Group, School of Dentistry, Institute of Clinical Sciences, College of Medical and Dental Sciences, Birmingham’s NIHR BRC in Inflammation Research, University of Birmingham and Birmingham Community Health Foundation Trust, Birmingham UK Iain Chapple
| | - J Liu
- Division of Chemical Biology and Medicinal Chemistry, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC, USA
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Jin SP, Suh JH, Kim CE, Oh IG, Seo EY, Kim MK, Yoon KN, Chung JH. Functionally similar genes exhibit comparable/similar time-course expression kinetics in the UV-induced photoaged mouse model. PLoS One 2023; 18:e0290358. [PMID: 37943888 PMCID: PMC10635544 DOI: 10.1371/journal.pone.0290358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 08/07/2023] [Indexed: 11/12/2023] Open
Abstract
Skin photoaging induced by ultraviolet (UV) irradiation contributes to the formation of thick and coarse wrinkles. Humans are exposed to UV light throughout their lives. Therefore, it is crucial to determine the time-sequential effects of UV on the skin. In this study, we irradiated the mouse back skin with UV light for eight weeks and observed the changes in gene expressions via microarray analysis every week. There were more downregulated genes (514) than upregulated genes (123). The downregulated genes had more functional diversity than the upregulated genes. Additionally, the number of downregulated genes did not increase in a time-dependent manner. Instead, time-dependent kinetic patterns were observed. Interestingly, each kinetic cluster harbored functionally enriched gene sets. Since collagen changes in the dermis are considered to be a major cause of photoaging, we hypothesized that other gene sets contributing to photoaging would exhibit kinetics similar to those of the collagen-regulatory genes identified in this study. Accordingly, co-expression network analysis was conducted using 11 well-known collagen-regulatory seed genes to predict genes with similar kinetics. We ranked all downregulated genes from 1 to 504 based on their expression levels, and the top 50 genes were suggested to be involved in the photoaging process. Additionally, to validate and support our identified top 50 gene lists, we demonstrated that the genes (FN1, CCDC80, PRELP, and TGFBR3) we discovered are downregulated by UV irradiation in cultured human fibroblasts, leading to decreased collagen levels, which is indicative of photoaging processes. Overall, this study demonstrated the time-sequential genetic changes in chronically UV-irradiated skin and proposed 50 genes that are involved in the mechanisms of photoaging.
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Affiliation(s)
- Seon-Pil Jin
- Department of Dermatology, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Dermatology, College of Medicine, Seoul National University, Seoul, Republic of Korea
- Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Seoul, Republic of Korea
| | - Joong Heon Suh
- Department of Dermatology, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Dermatology, College of Medicine, Seoul National University, Seoul, Republic of Korea
- Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Seoul, Republic of Korea
- Department of Biomedical Sciences, Graduate School, Seoul National University Graduate School, Seoul, Republic of Korea
| | - Chang-Eop Kim
- Department of Physiology, Department of Physiology, Gachon University College of Korean Medicine, Seongnam, Republic of Korea
| | - Inn Gyung Oh
- Department of Dermatology, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Dermatology, College of Medicine, Seoul National University, Seoul, Republic of Korea
- Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Seoul, Republic of Korea
| | - Eun Young Seo
- Department of Dermatology, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Dermatology, College of Medicine, Seoul National University, Seoul, Republic of Korea
- Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Seoul, Republic of Korea
| | - Min-Kyoung Kim
- Department of Dermatology, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Dermatology, College of Medicine, Seoul National University, Seoul, Republic of Korea
- Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Seoul, Republic of Korea
| | - Kyeong-No Yoon
- Department of Dermatology, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Dermatology, College of Medicine, Seoul National University, Seoul, Republic of Korea
- Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Seoul, Republic of Korea
- Department of Biomedical Sciences, Graduate School, Seoul National University Graduate School, Seoul, Republic of Korea
| | - Jin Ho Chung
- Department of Dermatology, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Dermatology, College of Medicine, Seoul National University, Seoul, Republic of Korea
- Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Seoul, Republic of Korea
- Department of Biomedical Sciences, Graduate School, Seoul National University Graduate School, Seoul, Republic of Korea
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7
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Colin-Pierre C, El Baraka O, Danoux L, Bardey V, André V, Ramont L, Brézillon S. Regulation of stem cell fate by HSPGs: implication in hair follicle cycling. NPJ Regen Med 2022; 7:77. [PMID: 36577752 PMCID: PMC9797564 DOI: 10.1038/s41536-022-00267-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 11/30/2022] [Indexed: 12/29/2022] Open
Abstract
Heparan sulfate proteoglycans (HSPGs) are part of proteoglycan family. They are composed of heparan sulfate (HS)-type glycosaminoglycan (GAG) chains covalently linked to a core protein. By interacting with growth factors and/or receptors, they regulate numerous pathways including Wnt, hedgehog (Hh), bone morphogenic protein (BMP) and fibroblast growth factor (FGF) pathways. They act as inhibitor or activator of these pathways to modulate embryonic and adult stem cell fate during organ morphogenesis, regeneration and homeostasis. This review summarizes the knowledge on HSPG structure and classification and explores several signaling pathways regulated by HSPGs in stem cell fate. A specific focus on hair follicle stem cell fate and the possibility to target HSPGs in order to tackle hair loss are discussed in more dermatological and cosmeceutical perspectives.
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Affiliation(s)
- Charlie Colin-Pierre
- Université de Reims Champagne-Ardenne, SFR CAP-Santé (FED 4231), Laboratoire de Biochimie Médicale et Biologie Moléculaire, Reims, France.
- CNRS UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire-MEDyC, Reims, France.
- BASF Beauty Care Solutions France SAS, Pulnoy, France.
| | | | - Louis Danoux
- BASF Beauty Care Solutions France SAS, Pulnoy, France
| | | | - Valérie André
- BASF Beauty Care Solutions France SAS, Pulnoy, France
| | - Laurent Ramont
- Université de Reims Champagne-Ardenne, SFR CAP-Santé (FED 4231), Laboratoire de Biochimie Médicale et Biologie Moléculaire, Reims, France
- CNRS UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire-MEDyC, Reims, France
- CHU de Reims, Service Biochimie-Pharmacologie-Toxicologie, Reims, France
| | - Stéphane Brézillon
- Université de Reims Champagne-Ardenne, SFR CAP-Santé (FED 4231), Laboratoire de Biochimie Médicale et Biologie Moléculaire, Reims, France
- CNRS UMR 7369, Matrice Extracellulaire et Dynamique Cellulaire-MEDyC, Reims, France
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Cho HJ, Lee YS, Kim DA, Moon SA, Lee SE, Lee SH, Koh JM. Lumican, an Exerkine, Protects against Skeletal Muscle Loss. Int J Mol Sci 2022; 23:ijms231710031. [PMID: 36077426 PMCID: PMC9456076 DOI: 10.3390/ijms231710031] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 08/27/2022] [Accepted: 08/31/2022] [Indexed: 11/16/2022] Open
Abstract
Exerkines are soluble factors secreted by exercised muscles, mimicking the effects of exercise in various organs, including the muscle itself. Lumican is reportedly secreted from muscles; however, its roles in skeletal muscle remain unknown. Herein, we found that lumican mRNA expression in the extensor digitorum longus was significantly higher in exercised mice than in unloading mice, and lumican stimulated myogenesis in vitro. Additionally, lumican knockdown significantly decreased muscle mass and cross-sectional area (CSA) of the muscle fiber in the gastrocnemius muscle of exercised mice. Lumican upregulated phosphorylation of p38 mitogen-activated protein kinase (MAPK) and a p38 inhibitor near completely blocked lumican-stimulated myogenesis. Inhibitors for integrin α2β1 and integrin ανβ3 also prevented lumican-stimulated myogenesis. Systemic lumican treatment, administered via the tail vein for 4 weeks, significantly increased relative muscle masses by 36.1% in ovariectomized mice. In addition, intramuscular lumican injection into unloaded muscles for 2 weeks significantly increased muscle mass by 8.5%. Both intravenous and intramuscular lumican treatment significantly increased muscle CSA. Our in vitro and in vivo experiments indicate that lumican is a muscle-secreted exerkine that affords protection against muscle loss by activating p38 MAPK via integrin receptors.
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Affiliation(s)
- Han Jin Cho
- Asan Institute for Life Sciences, Asan Medical Center, Seoul 05505, Korea
| | - Young-Sun Lee
- Asan Institute for Life Sciences, Asan Medical Center, Seoul 05505, Korea
| | - Da Ae Kim
- Asan Institute for Life Sciences, Asan Medical Center, Seoul 05505, Korea
| | - Sung Ah Moon
- Asan Institute for Life Sciences, Asan Medical Center, Seoul 05505, Korea
| | - Seung Eun Lee
- Virus Facility, Research Animal Resource Center, Korea Institute of Science and Technology, Seoul 02792, Korea
| | - Seung Hun Lee
- Division of Endocrinology and Metabolism, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea
| | - Jung-Min Koh
- Division of Endocrinology and Metabolism, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea
- Correspondence: ; Tel.: +82-2-3010-3247
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Chen Q, Zhang Y, Zhang K, Liu J, Pan H, Wang X, Li S, Hu D, Lin Z, Zhao Y, Hou G, Guan F, Li H, Liu S, Ren Y. Profiling the Bisecting N-acetylglucosamine Modification in Amniotic Membrane via Mass Spectrometry. GENOMICS, PROTEOMICS & BIOINFORMATICS 2022; 20:648-656. [PMID: 35123071 PMCID: PMC9880894 DOI: 10.1016/j.gpb.2021.09.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 08/30/2021] [Accepted: 10/11/2021] [Indexed: 01/31/2023]
Abstract
Bisecting N-acetylglucosamine (GlcNAc), a GlcNAc linked to the core β-mannose residue via a β1,4 linkage, is a special type of N-glycosylation that has been reported to be involved in various biological processes, such as cell adhesion and fetal development. This N-glycan structure is abundant in human trophoblasts, which is postulated to be resistant to natural killer cell-mediated cytotoxicity, enabling a mother to nourish a fetus without rejection. In this study, we hypothesized that the human amniotic membrane, which serves as the last barrier for the fetus, may also express bisected-type glycans. To test this hypothesis, glycomic analysis of the human amniotic membrane was performed, and bisected N-glycans were detected. Furthermore, our proteomic data, which have been previously employed to explore human missing proteins, were analyzed and the presence of bisecting GlcNAc-modified peptides was confirmed. A total of 41 glycoproteins with 43 glycopeptides were found to possess a bisecting GlcNAc, and 25 of these glycoproteins were reported to exhibit this type of modification for the first time. These results provide insights into the potential roles of bisecting GlcNAc modification in the human amniotic membrane, and can be beneficial to functional studies on glycoproteins with bisecting GlcNAc modifications and functional studies on immune suppression in human placenta.
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Affiliation(s)
| | | | | | - Jie Liu
- BGI-Shenzhen, Shenzhen 518083, China
| | | | | | - Siqi Li
- BGI-Shenzhen, Shenzhen 518083, China
| | - Dandan Hu
- BGI-Shenzhen, Shenzhen 518083, China
| | | | - Yun Zhao
- BGI-Shenzhen, Shenzhen 518083, China
| | | | - Feng Guan
- Joint International Research Laboratory of Glycobiology and Medical Chemistry, College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Hong Li
- Shenzhen Seventh People's Hospital, Shenzhen 518081, China
| | - Siqi Liu
- BGI-Shenzhen, Shenzhen 518083, China,Corresponding authors.
| | - Yan Ren
- BGI-Shenzhen, Shenzhen 518083, China,Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China,Corresponding authors.
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10
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Eremenko E, Ding J, Kwan P, Tredget EE. The Biology of Extracellular Matrix Proteins in Hypertrophic Scarring. Adv Wound Care (New Rochelle) 2022; 11:234-254. [PMID: 33913776 DOI: 10.1089/wound.2020.1257] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Significance: Hypertrophic scars (HTS) are a fibroproliferative disorder that occur following deep dermal injury and affect up to 72% of burn patients. These scars result in discomfort, impaired mobility, disruption of normal function and cosmesis, and significant psychological distress. Currently, there are no satisfactory methods to treat or prevent HTS, as the cellular and molecular mechanisms are complex and incompletely understood. This review summarizes the biology of proteins in the dermal extracellular matrix (ECM), which are involved in wound healing and hypertrophic scarring. Recent Advances: New basic research continues toward understanding the diversity of cellular and molecular mechanisms of normal wound healing and hypertrophic scarring. Broadening the understanding of these mechanisms creates insight into novel methods for preventing and treating HTS. Critical Issues: Although there is an abundance of research conducted on collagen in the ECM and its relationship to HTS, there is a significant gap in understanding the role of proteoglycans and their specific isoforms in dermal fibrosis. Future Directions: Exploring the biological roles of ECM proteins and their unique isoforms in HTS, mature scars, and normal skin will further the understanding of abnormal wound healing and create a more robust understanding of what constitutes dermal fibrosis. Research into the biological roles of ECM protein isoforms and their regulation during wound healing warrants a more extensive investigation to identify their distinct biological functions in cellular processes and outcomes.
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Affiliation(s)
- Elizabeth Eremenko
- Wound Healing Research Group, Division of Plastic and Reconstructive Surgery, University of Alberta, Edmonton, Canada
| | - Jie Ding
- Wound Healing Research Group, Division of Plastic and Reconstructive Surgery, University of Alberta, Edmonton, Canada
| | - Peter Kwan
- Wound Healing Research Group, Division of Plastic and Reconstructive Surgery, University of Alberta, Edmonton, Canada
- Division of Plastic Surgery, Department of Surgery, University of Alberta, Edmonton, Canada
| | - Edward E. Tredget
- Wound Healing Research Group, Division of Plastic and Reconstructive Surgery, University of Alberta, Edmonton, Canada
- Division of Plastic Surgery, Department of Surgery, University of Alberta, Edmonton, Canada
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11
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Label-Free Quantitative Proteomics to Explore the Action Mechanism of the Pharmaceutical-Grade Triticum vulgare Extract in Speeding Up Keratinocyte Healing. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27031108. [PMID: 35164377 PMCID: PMC8839156 DOI: 10.3390/molecules27031108] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 01/21/2022] [Accepted: 02/01/2022] [Indexed: 02/07/2023]
Abstract
Plant extracts have shown beneficial properties in terms of skin repair, promoting wound healing through a plethora of mechanisms. In particular, the poly-/oligosaccharidic aqueous extract of Triticum vulgare (TVE), as well as TVE-based products, shows interesting biological assets, hastening wound repair. Indeed, TVE acts in the treatment of tissue regeneration mainly on decubitus and venous leg ulcers. Moreover, on scratched monolayers, TVE prompts HaCat cell migration, correctly modulating the expression of metalloproteases toward a physiological matrix remodeling. Here, using the same HaCat-based in vitro scratch model, the TVE effect has been investigated thanks to an LFQ proteomic analysis of HaCat secretomes and immunoblotting. Indeed, the unbiased TVE effect on secreted proteins has not yet been fully understood, and it could be helpful to obtain a comprehensive picture of its bio-pharmacological profile. It has emerged that TVE treatment induces significant up-regulation of several proteins in the secretome (153 to be exact) whereas only a few were down-regulated (72 to be exact). Interestingly, many of the up-regulated proteins are implicated in promoting wound-healing-related processes, such as modulating cell-cell interaction and communication, cell proliferation and differentiation, and prompting cell adhesion and migration.
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12
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Salesa B, Sabater i Serra R, Serrano-Aroca Á. Zinc Chloride: Time-Dependent Cytotoxicity, Proliferation and Promotion of Glycoprotein Synthesis and Antioxidant Gene Expression in Human Keratinocytes. BIOLOGY 2021; 10:1072. [PMID: 34827065 PMCID: PMC8615178 DOI: 10.3390/biology10111072] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 10/15/2021] [Accepted: 10/16/2021] [Indexed: 11/20/2022]
Abstract
The use of ionic metals such as zinc (Zn2+) is providing promising results in regenerative medicine. In this study, human keratinocytes (HaCaT cells) were treated with different concentrations of zinc chloride (ZnCl2), ranging from 1 to 800 µg/mL, for 3, 12 and 24 h. The results showed a time-concentration dependence with three non-cytotoxic concentrations (10, 5 and 1 µg/mL) and a median effective concentration value of 13.5 µg/mL at a cell exposure to ZnCl2 of 24 h. However, the zinc treatment with 5 or 1 µg/mL had no effect on cell proliferation in HaCaT cells in relation to the control sample at 72 h. The effects of the Zn2+ treatment on the expression of several genes related to glycoprotein synthesis, oxidative stress, proliferation and differentiation were assessed at the two lowest non-cytotoxic concentrations after 24 h of treatment. Out of 13 analyzed genes (superoxide dismutase 1 (SOD1), catalase (CAT), matrix metallopeptidase 1 (MMP1), transforming growth factor beta 1 (TGFB1), glutathione peroxidase 1 (GPX1), fibronectin 1 (FN1), hyaluronan synthase 2 (HAS2), laminin subunit beta 1 (LAMB1), lumican (LUM), cadherin 1 (CDH1), collagen type IV alpha (COL4A1), fibrillin (FBN) and versican (VCAN)), Zn2+ was able to upregulate SOD1, CAT, TGFB1, GPX1, LUM, CDH1, FBN and VCAN, with relative expression levels of at least 1.9-fold with respect to controls. We found that ZnCl2 promoted glycoprotein synthesis and antioxidant gene expression, thus confirming its great potential in biomedicine.
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Affiliation(s)
- Beatriz Salesa
- Biomaterials and Bioengineering Lab, Centro de Investigación Traslacional San Alberto Magno, Universidad Católica de Valencia San Vicente Mártir, 46022 València, Spain;
| | - Roser Sabater i Serra
- Centre for Biomaterials and Tissue Engineering, Universitat Politècnica de València, 46022 València, Spain
- Biomedical Research Networking Center, Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 46022 Valencia, Spain
| | - Ángel Serrano-Aroca
- Biomaterials and Bioengineering Lab, Centro de Investigación Traslacional San Alberto Magno, Universidad Católica de Valencia San Vicente Mártir, 46022 València, Spain;
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13
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Wang ST, Neo BH, Betts RJ. Glycosaminoglycans: Sweet as Sugar Targets for Topical Skin Anti-Aging. Clin Cosmet Investig Dermatol 2021; 14:1227-1246. [PMID: 34548803 PMCID: PMC8449875 DOI: 10.2147/ccid.s328671] [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: 07/16/2021] [Accepted: 08/19/2021] [Indexed: 12/23/2022]
Abstract
Glycosaminoglycans (GAGs) are long, linear polysaccharides comprised of repeating disaccharide units with pleiotropic biological functions, with the non-sulfated GAG hyaluronic acid (HA), and sulfated GAGs dermatan sulfate, chondroitin sulfate, heparan sulfate, keratan sulfate, and to a lesser extent heparin all being expressed in skin. Their ability to regulate keratinocyte proliferation and differentiation, inflammatory processes and extracellular matrix composition and quality demonstrates their critical role in regulating skin physiology. Similarly, the water-binding properties of GAGs and structural qualities, particularly for HA, are crucial for maintaining proper skin form and hydration. The biological importance of GAGs, as well as extensive evidence that their properties and functions are altered in both chronological and extrinsic skin aging, makes them highly promising targets to improve cosmetic skin quality. Within the present review, we examine the cutaneous biological activity of GAGs alongside the protein complexes they form called proteoglycans and summarize the age-related changes of these molecules in skin. We also examine current topical interventional approaches to modulate GAGs for improved skin quality such as direct exogenous administration of GAGs, with a particular interest in strategies targeted at potentiating GAG levels in skin through either attenuating GAG degradation or increasing GAG production.
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Affiliation(s)
- Siew Tein Wang
- L'Oréal Research & Innovation, L'Oréal Singapore, Singapore
| | - Boon Hoe Neo
- L'Oréal Research & Innovation, L'Oréal Singapore, Singapore
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14
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Sridharan S, Nagarajan SK, Venugopal K, Venkatasubbu GD. Time-dependent conformational analysis of ALK5-lumican complex in presence of graphene and graphene oxide employing molecular dynamics and MMPBSA calculation. J Biomol Struct Dyn 2021; 40:5932-5955. [PMID: 33507126 DOI: 10.1080/07391102.2021.1876772] [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: 10/22/2022]
Abstract
Lumican, an extracellular matrix protein avails wound healing by binding to ALK5 membrane receptor (TGF-beta receptor I). Their interaction enables epithelialization and substantiates rejuvenation of injured tissue. To enrich permanence of ALK5-lumican interaction, we employed graphene and graphene oxide co-factors. Herein, this study explicates concomitancy of graphene and graphene oxide with ALK5-lumican. We performed an in silico approach involving molecular modelling, molecular docking, molecular dynamics for 200 ns, DSSP analysis and MMPBSA calculations. Results of molecular dynamics indicate cofactors influential in altering bioactive site of lumican than ALK5. Similarly, MMPBSA calculations unveiled binding energy of apoenzyme as -108.09 kcal/mol, holoenzyme (G) as -79.20 kcal/mol and holoenzyme (GO) as -114.33 kcal/mol. This concludes graphene oxide lucrative in enhancing binding energy of ALK5-lumican in holoenzyme (GO) via coil formation of Lum C13 domain. In contrast, graphene reduced binding energy of ALK5-lumican in holoenzyme (G) modifying Lum C13 into beta sheets. MMPBSA residual contribution analysis of Lum C13 residues revealed binding energy of -13.9 kcal/mol for apoenzyme, -6.8 kcal/mol for holoenzyme (G) and -19.5 kcal/mol for holoenzyme (GO). This supports coil formation propitious for better ALK5-Lum interaction. Highest SASA energy of -21.05 kcal/mol of holoenzyme (G) assures graphene reasonable for improved ALK5-lumican hydrophobicity. As per the motive of the study, graphene oxide enriches permanence of ALK5-lumican. This provides counsel for plausible exploitation of lumican and graphene oxide as targeted/nano drug delivery system to reinstate acute wounds, chronic wounds, corneal wounds, hypertrophic scars and keloids in near future. Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Sindhiya Sridharan
- Department of Nanotechnology, SRM Institute of Science and Technology, Chengalpattu, Tamil Nadu, India
| | - Santhosh Kumar Nagarajan
- Department of Genetic Engineering, SRM Institute of Science and Technology, Chengalpattu, Tamil Nadu, India
| | - Kathirvel Venugopal
- Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Chengalpattu, Tamil Nadu, India
| | - G Devanand Venkatasubbu
- Department of Nanotechnology, SRM Institute of Science and Technology, Chengalpattu, Tamil Nadu, India
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15
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Dhavalikar P, Robinson A, Lan Z, Jenkins D, Chwatko M, Salhadar K, Jose A, Kar R, Shoga E, Kannapiran A, Cosgriff-Hernandez E. Review of Integrin-Targeting Biomaterials in Tissue Engineering. Adv Healthc Mater 2020; 9:e2000795. [PMID: 32940020 PMCID: PMC7960574 DOI: 10.1002/adhm.202000795] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 08/27/2020] [Indexed: 12/12/2022]
Abstract
The ability to direct cell behavior has been central to the success of numerous therapeutics to regenerate tissue or facilitate device integration. Biomaterial scientists are challenged to understand and modulate the interactions of biomaterials with biological systems in order to achieve effective tissue repair. One key area of research investigates the use of extracellular matrix-derived ligands to target specific integrin interactions and induce cellular responses, such as increased cell migration, proliferation, and differentiation of mesenchymal stem cells. These integrin-targeting proteins and peptides have been implemented in a variety of different polymeric scaffolds and devices to enhance tissue regeneration and integration. This review first presents an overview of integrin-mediated cellular processes that have been identified in angiogenesis, wound healing, and bone regeneration. Then, research utilizing biomaterials are highlighted with integrin-targeting motifs as a means to direct these cellular processes to enhance tissue regeneration. In addition to providing improved materials for tissue repair and device integration, these innovative biomaterials provide new tools to probe the complex processes of tissue remodeling in order to enhance the rational design of biomaterial scaffolds and guide tissue regeneration strategies.
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Affiliation(s)
- Prachi Dhavalikar
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, 78712, USA
| | - Andrew Robinson
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, 78712, USA
| | - Ziyang Lan
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, 78712, USA
| | - Dana Jenkins
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, 78712, USA
| | - Malgorzata Chwatko
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, 78712, USA
| | - Karim Salhadar
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, 78712, USA
| | - Anupriya Jose
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, 78712, USA
| | - Ronit Kar
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, 78712, USA
| | - Erik Shoga
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, 78712, USA
| | - Aparajith Kannapiran
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, 78712, USA
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Carmo J, Cavalcante-Araújo P, Silva J, Ferro J, Correia AC, Lagente V, Barreto E. Uvaol Improves the Functioning of Fibroblasts and Endothelial Cells and Accelerates the Healing of Cutaneous Wounds in Mice. Molecules 2020; 25:molecules25214982. [PMID: 33126422 PMCID: PMC7662923 DOI: 10.3390/molecules25214982] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 10/26/2020] [Accepted: 10/27/2020] [Indexed: 12/16/2022] Open
Abstract
Uvaol is a natural pentacyclic triterpene that is widely found in olives and virgin olive oil, exerting various pharmacological properties. However, information remains limited about how it affects fibroblasts and endothelial cells in events associated with wound healing. Here, we report the effect of uvaol in the in vitro and in vivo healing process. We show the positive effects of uvaol on migration of fibroblasts and endothelial cells in the scratch assay. Protein synthesis of fibronectin and laminin (but not collagen type I) was improved in uvaol-treated fibroblasts. In comparison, tube formation by endothelial cells was enhanced after uvaol treatment. Mechanistically, the effects of uvaol on cell migration involved the PKA and p38-MAPK signaling pathway in endothelial cells but not in fibroblasts. Thus, the uvaol-induced migratory response was dependent on the PKA pathway. Finally, topical treatment with uvaol caused wounds to close faster than in the control treatment using experimental cutaneous wounds model in mice. In conclusion, uvaol positively affects the behavior of fibroblasts and endothelial cells, potentially promoting cutaneous healing.
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Affiliation(s)
- Julianderson Carmo
- Laboratory of Cell Biology, Federal University of Alagoas, 57072-900 Maceió, Brazil; (J.C.); (P.C.-A.); (J.S.); (J.F.)
| | - Polliane Cavalcante-Araújo
- Laboratory of Cell Biology, Federal University of Alagoas, 57072-900 Maceió, Brazil; (J.C.); (P.C.-A.); (J.S.); (J.F.)
| | - Juliane Silva
- Laboratory of Cell Biology, Federal University of Alagoas, 57072-900 Maceió, Brazil; (J.C.); (P.C.-A.); (J.S.); (J.F.)
| | - Jamylle Ferro
- Laboratory of Cell Biology, Federal University of Alagoas, 57072-900 Maceió, Brazil; (J.C.); (P.C.-A.); (J.S.); (J.F.)
| | - Ana Carolina Correia
- Garanhuns College of Science, Education and Technology, University of Pernambuco, 55294-902 Garanhuns, Brazil;
| | - Vincent Lagente
- NuMeCan Institute (Nutrition, Metabolism and Cancer), Université de Rennes, INSERM, INRA, F-35000 Rennes, France;
| | - Emiliano Barreto
- Laboratory of Cell Biology, Federal University of Alagoas, 57072-900 Maceió, Brazil; (J.C.); (P.C.-A.); (J.S.); (J.F.)
- Correspondence: ; Tel.: +55-82-3214-1704
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17
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Xiao D, Liang T, Zhuang Z, He R, Ren J, Jiang S, Zhu L, Wang K, Shi D. Lumican promotes joint fibrosis through TGF-β signaling. FEBS Open Bio 2020; 10:2478-2488. [PMID: 32910552 PMCID: PMC7609791 DOI: 10.1002/2211-5463.12974] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 07/26/2020] [Accepted: 09/03/2020] [Indexed: 01/06/2023] Open
Abstract
Joint contracture (also known as arthrofibrosis) is a fibrotic joint disorder characterized by excessive collagen production to form fibrotic scar tissue and adhesions within joint capsules. This can severely affect day‐to‐day activities and quality of life because of a restricted range of motion in affected joints. The precise pathogenic mechanism underlying joint contractures is not fully understood. Lumican belongs to the class II small leucine‐rich repeat proteoglycan superfamily, which makes up collagen fibrils in the extracellular matrix. Lumican is ubiquitously expressed in the skin, liver, heart, uterus and articular cartilage and has reported roles in cell migration, proliferation, angiogenesis and Toll‐like receptor 4 signaling. Previous research has suggested that lumican is involved in the pathogenesis of several fibrotic diseases. Because joint contracture resembles a fibrotic disease, we aimed to investigate the role of lumican in the development of joint contracture in vitro. Here, we showed that protein levels were up‐regulated in the fibrotic joint capsule versus control. We observed that lumican significantly enhanced the proliferation, migration and fibroblast–myofibroblast transition of synovial fibroblasts. Moreover, lumican led to increased transcription of alpha‐smooth muscle actin, matrix metallopeptidase 9, Collagen I, plasminogen activator inhibitor 1 and transforming growth factor‐β in vitro. Lumican treatment promoted collagen lattice contraction in a dose‐dependent manner as early as 24 h after treatment. Thus, our studies reveal that lumican could promote fibroblast–myofibroblast transition and joint contracture.
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Affiliation(s)
- Dahai Xiao
- Department of Joint and Trauma Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Tangzhao Liang
- Department of Joint and Trauma Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Ze Zhuang
- Department of Joint and Trauma Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Ronghan He
- Department of Joint and Trauma Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Jianhua Ren
- Department of Joint and Trauma Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Shihai Jiang
- Department of Joint and Trauma Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Lei Zhu
- Department of Plastic Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Kun Wang
- Department of Joint and Trauma Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Dehai Shi
- Department of Joint and Trauma Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
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18
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Van JAD, Clotet-Freixas S, Hauschild AC, Batruch I, Jurisica I, Elia Y, Mahmud FH, Sochett E, Diamandis EP, Scholey JW, Konvalinka A. Urinary proteomics links keratan sulfate degradation and lysosomal enzymes to early type 1 diabetes. PLoS One 2020; 15:e0233639. [PMID: 32453760 PMCID: PMC7250451 DOI: 10.1371/journal.pone.0233639] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 05/09/2020] [Indexed: 01/09/2023] Open
Abstract
Diabetes is the leading cause of end-stage renal disease worldwide. Our understanding of the early kidney response to chronic hyperglycemia remains incomplete. To address this, we first investigated the urinary proteomes of otherwise healthy youths with and without type 1 diabetes and subsequently examined the enriched pathways that might be dysregulated in early disease using systems biology approaches. This cross-sectional study included two separate cohorts for the discovery (N = 30) and internal validation (N = 30) of differentially excreted proteins. Discovery proteomics was performed on a Q Exactive Plus hybrid quadrupole-orbitrap mass spectrometer. We then searched the pathDIP, KEGG, and Reactome databases to identify enriched pathways in early diabetes; the Integrated Interactions Database to retrieve protein-protein interaction data; and the PubMed database to compare fold changes of our signature proteins with those published in similarly designed studies. Proteins were selected for internal validation based on pathway enrichment and availability of commercial enzyme-linked immunosorbent assay kits. Of the 2451 proteins identified, 576 were quantified in all samples from the discovery cohort; 34 comprised the urinary signature for early diabetes after Benjamini-Hochberg adjustment (Q < 0.05). The top pathways associated with this signature included lysosome, glycosaminoglycan degradation, and innate immune system (Q < 0.01). Notably, all enzymes involved in keratan sulfate degradation were significantly elevated in urines from youths with diabetes (|fold change| > 1.6). Increased urinary excretion of monocyte differentiation antigen CD14, hexosaminidase A, and lumican was also observed in the validation cohort (P < 0.05). Twenty-one proteins from our signature have been reported elsewhere as potential mediators of early diabetes. In this study, we identified a urinary proteomic signature for early type 1 diabetes, of which lysosomal enzymes were major constituents. Our findings highlight novel pathways such as keratan sulfate degradation in the early kidney response to hyperglycemia.
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Affiliation(s)
- Julie A. D. Van
- Institute of Medical Science, University of Toronto, Toronto, Canada
- Toronto General Hospital Research Institute, University Health Network, Toronto, Canada
- * E-mail:
| | - Sergi Clotet-Freixas
- Toronto General Hospital Research Institute, University Health Network, Toronto, Canada
| | - Anne-Christin Hauschild
- Krembil Research Institute, University Health Network, Toronto, Canada
- Department of Mathematics & Computer Science, University of Marburg, Marburg, Germany
| | - Ihor Batruch
- Department of Laboratory Medicine and Pathobiology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, University of Toronto, Toronto, Canada
| | - Igor Jurisica
- Krembil Research Institute, University Health Network, Toronto, Canada
- Department of Computer Science, University of Toronto, Toronto, Canada
- Institute of Neuroimmunology, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Yesmino Elia
- Hospital for Sick Children, Toronto, Ontario, Canada
| | | | | | - Eleftherios P. Diamandis
- Department of Laboratory Medicine and Pathobiology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, University of Toronto, Toronto, Canada
- Department of Clinical Biochemistry, University Health Network, University of Toronto, Toronto, Canada
| | - James W. Scholey
- Institute of Medical Science, University of Toronto, Toronto, Canada
- Toronto General Hospital Research Institute, University Health Network, Toronto, Canada
- Division of Nephrology, Department of Medicine, University Health Network, Toronto, Ontario, Canada
| | - Ana Konvalinka
- Institute of Medical Science, University of Toronto, Toronto, Canada
- Toronto General Hospital Research Institute, University Health Network, Toronto, Canada
- Division of Nephrology, Department of Medicine, University Health Network, Toronto, Ontario, Canada
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Walimbe T, Panitch A. Proteoglycans in Biomedicine: Resurgence of an Underexploited Class of ECM Molecules. Front Pharmacol 2020; 10:1661. [PMID: 32082161 PMCID: PMC7000921 DOI: 10.3389/fphar.2019.01661] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 12/18/2019] [Indexed: 01/02/2023] Open
Abstract
Proteoglycans have emerged as biomacromolecules with important roles in matrix remodeling, homeostasis, and signaling in the past two decades. Due to their negatively charged glycosaminoglycan chains as well as distinct core protein structures, they interact with a variety of molecules, including matrix proteins, growth factors, cytokines and chemokines, pathogens, and enzymes. This led to the dawn of glycan therapies in the 20th century, but this research was quickly overshadowed by readily available DNA and protein-based therapies. The recent development of recombinant technology and advances in our understanding of proteoglycan function have led to a resurgence of these molecules as potential therapeutics. This review focuses on the recent preclinical efforts that are bringing proteoglycan research and therapies back to the forefront. Examples of studies using proteoglycan cores and mimetics have also been included to give the readers a perspective on the wide-ranging and extensive applications of these versatile molecules. Collectively, these advances are opening new avenues for targeting diseases at a molecular level, and providing avenues for the development of new and exciting treatments in regenerative medicine.
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Affiliation(s)
- Tanaya Walimbe
- Laboratory of Engineered Therapeutics, Department of Biomedical Engineering, University of California, Davis, Davis, CA, United States
| | - Alyssa Panitch
- Laboratory of Engineered Therapeutics, Department of Biomedical Engineering, University of California, Davis, Davis, CA, United States
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20
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Pang X, Dong N, Zheng Z. Small Leucine-Rich Proteoglycans in Skin Wound Healing. Front Pharmacol 2020; 10:1649. [PMID: 32063855 PMCID: PMC6997777 DOI: 10.3389/fphar.2019.01649] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 12/16/2019] [Indexed: 12/11/2022] Open
Abstract
Healing of cutaneous wounds is a complex and well-coordinated process requiring cooperation among multiple cells from different lineages and delicately orchestrated signaling transduction of a diversity of growth factors, cytokines, and extracellular matrix (ECM) at the wound site. Most skin wound healing in adults is imperfect, characterized by scar formation which results in significant functional and psychological sequelae. Thus, the reconstruction of the damaged skin to its original state is of concern to doctors and scientists. Beyond the traditional treatments such as corticosteroid injection and radiation therapy, several growth factors or cytokines-based anti-scarring products are being or have been tested in clinical trials to optimize skin wound healing. Unfortunately, all have been unsatisfactory to date. Currently, accumulating evidence suggests that the ECM not only functions as the structural component of the tissue but also actively modulates signal transduction and regulates cellular behaviors, and thus, ECM should be considered as an alternative target for wound management pharmacotherapy. Of particular interest are small leucine-rich proteoglycans (SLRPs), a group of the ECM, which exist in a wide range of connecting tissues, including the skin. This manuscript summarizes the most current knowledge of SLRPs regarding their spatial-temporal expression in the skin, as well as lessons learned from the genetically modified animal models simulating human skin pathologies. In this review, particular focus is given on the diverse roles of SLRP in skin wound healing, such as anti-inflammation, pro-angiogenesis, pro-migration, pro-contraction, and orchestrate transforming growth factor (TGF)β signal transduction, since cumulative investigations have indicated their therapeutic potential on reducing scar formation in cutaneous wounds. By conducting this review, we intend to gain insight into the potential application of SLRPs in cutaneous wound healing management which may pave the way for the development of a new generation of pharmaceuticals to benefit the patients suffering from skin wounds and their sequelae.
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Affiliation(s)
- Xiaoxiao Pang
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Stomatological Hospital of Chongqing Medical University, Chongqing, China.,Division of Growth and Development, School of Dentistry, University of California, Los Angeles, Los Angeles, CA, United States
| | - Nuo Dong
- Division of Growth and Development, School of Dentistry, University of California, Los Angeles, Los Angeles, CA, United States
| | - Zhong Zheng
- Division of Growth and Development, School of Dentistry, University of California, Los Angeles, Los Angeles, CA, United States
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21
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Elevated Expression of Lumican in Lung Cancer Cells Promotes Bone Metastasis through an Autocrine Regulatory Mechanism. Cancers (Basel) 2020; 12:cancers12010233. [PMID: 31963522 PMCID: PMC7016828 DOI: 10.3390/cancers12010233] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Accepted: 01/15/2020] [Indexed: 12/20/2022] Open
Abstract
Background: The microarray analysis of whole-genome expression indicated that the gene encoding the protein lumican, which is associated with extracellular matrix (ECM) interaction, was highly expressed in osteotropic lung cancer cell lines with an enhanced capacity of bone metastasis. Methods: The expression of lumican in the osteotropic lung cancer cells was downregulated, and the in vitro migration, invasion, and adhesion of cancer cells to ECM components, and the in vivo bone metastasis capacity of these cells were examined. Exogenous lumican was provided to study the autocrine regulation mechanism of lumican in the bone metastasis of lung cancer cells. Results: Transfection with lumican-specific short hairpin RNA (shRNA) in the osteotropic lung cancer cells reduced the establishment of in vivo bone metastasis, but not lung metastasis. Reduction in the expression of lumican also decreased the attachment of lung osteotropic cancer cells to several components of the ECM and suppressed cell migration and invasion in vitro. Exogenous lumican restored these reduced capacities of lumican knockdown cells and promoted the seeding of lung cancer cells in the bone microenvironment. Conclusions: These results suggested that lumican promotes the metastasis of lung cancer cells to the bones via an autocrine regulatory mechanism, and blocking this interaction may provide a new therapeutic approach to reduce bone metastasis in cases of lung cancer.
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22
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Binder RL, Freedman MA, Sharma KB, Farage MA, Wang Y, Combs C, Moore D, Tiesman JP, Bascom CC, Isfort RJ, Warren R. Histological and Gene Expression Analysis of the Effects of Menopause Status and Hormone Therapy on the Vaginal Introitus and Labia Majora. J Clin Med Res 2019; 11:745-759. [PMID: 31803317 PMCID: PMC6879024 DOI: 10.14740/jocmr4006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Accepted: 09/27/2019] [Indexed: 12/19/2022] Open
Abstract
Background The study aimed to determine the effect of menopausal status and hormone therapy on the introitus and labia majora at the levels of histology and gene expression. Methods Three cohorts of 10 women each (pre-menopause, post-menopause and post-menopause + hormone therapy) were selected based on the presentation of clinical atrophy and vaginal pH. Biopsies were obtained from the introitus (fourchette) and labia majora and processed for histology and gene expression analyses with microarrays. Other data collected included self-assessed symptoms, serum estradiol, testosterone, serum hormone binding globulin and the pH of the vagina and labia majora. Results The introitus appears exquisitely sensitive to hormone status. Dramatic changes were observed in histology including a thinning of the epithelium in post-menopausal subjects with vaginal atrophy. Furthermore, there was differential expression of many genes that may contribute to tissue remodeling in the atrophic introitus. Levels of expression of genes associated with wound healing, angiogenesis, cell migration/locomotion, dermal structure, apoptosis, inflammation, epithelial cell differentiation, fatty acid, carbohydrate and steroid metabolism were significantly different in the cohort exhibiting atrophy of the introitus. While changes were also observed at the labia, that site was considerably less sensitive to hormone status. The gene expression changes observed at the introitus in this study were very similar to those reported previously in the atrophic vagina providing further evidence that these changes are associated with atrophy. Conclusions The histological and gene expression changes occurring within the introitus after menopause may contribute to the constellation of symptoms that constitute the genitourinary syndrome of menopause.
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Affiliation(s)
| | - Murray A Freedman
- Obstetrics & Gynecology, Medical College of Georgia, Augusta, GA, USA
| | - Kailash B Sharma
- Obstetrics & Gynecology, Medical College of Georgia, Augusta, GA, USA
| | | | - Yu Wang
- The Procter & Gamble Company, Cincinnati, OH, USA
| | | | - David Moore
- The Procter & Gamble Company, Cincinnati, OH, USA
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McCoy AM, Arrington J, Yau PM. Effect of Preparation Method on the Protein Profile of Equine Amnion Dressings. J Proteome Res 2019; 18:2676-2685. [PMID: 31117638 DOI: 10.1021/acs.jproteome.9b00240] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The protein content of amnion is thought to be the primary contributor to its efficacy as a biological dressing for wounds. Protein elution into antibiotic processing media has been reported, but the effect of antiseptic-based processing methods is unknown. Amniotic membranes were collected from eight healthy mares. Samples were collected after removal of gross debris. Tissues were subsequently divided and processed with either 0.05% chlorhexidine or 2% iodine/0.25% acetic acid. After protein extraction and trypsin digestion, the proteins were labeled with 8-plex iTRAQ tags, combined, and analyzed by high-resolution liquid chromatography-mass spectrometry. The MaxQuant-Perseus software suite was used to identify and quantify sample proteins, with functional annotation performed in PANTHER. There were 220 unique proteins identified, of which 144 were found in all individuals and across all conditions, several with a known role in wound healing. Contrary to expectations, processing did not significantly alter the protein content of the amnion tissue. Limitations include the small sample size and single time point. These results suggest that either processing method is acceptable for use in the preparation of equine amnion dressings. The role of expressed proteins in the biological activity of amnion dressings remains to be elucidated.
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Affiliation(s)
- Annette M McCoy
- Department of Veterinary Clinical Medicine , University of Illinois Urbana-Champaign , 1008 West Hazelwood Drive , Urbana , Illinois 61802 , United States
| | - Justine Arrington
- Protein Sciences Facility, Roy J. Carver Biotechnology Center , University of Illinois Urbana-Champaign , 505 South Matthews Avenue , Urbana , Illinois 61801 , United States
| | - Peter M Yau
- Protein Sciences Facility, Roy J. Carver Biotechnology Center , University of Illinois Urbana-Champaign , 505 South Matthews Avenue , Urbana , Illinois 61801 , United States
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Theocharis AD, Manou D, Karamanos NK. The extracellular matrix as a multitasking player in disease. FEBS J 2019; 286:2830-2869. [PMID: 30908868 DOI: 10.1111/febs.14818] [Citation(s) in RCA: 228] [Impact Index Per Article: 45.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2018] [Revised: 02/06/2019] [Accepted: 03/22/2019] [Indexed: 12/12/2022]
Abstract
Extracellular matrices (ECMs) are highly specialized and dynamic three-dimensional (3D) scaffolds into which cells reside in tissues. ECM is composed of a variety of fibrillar components, such as collagens, fibronectin, and elastin, and non-fibrillar molecules as proteoglycans, hyaluronan, and glycoproteins including matricellular proteins. These macromolecular components are interconnected forming complex networks that actively communicate with cells through binding to cell surface receptors and/or matrix effectors. ECMs exert diverse roles, either providing tissues with structural integrity and mechanical properties essential for tissue functions or regulating cell phenotype and functions to maintain tissue homeostasis. ECM molecular composition and structure vary among tissues, and is markedly modified during normal tissue repair as well as during the progression of various diseases. Actually, abnormal ECM remodeling occurring in pathologic circumstances drives disease progression by regulating cell-matrix interactions. The importance of matrix molecules to normal tissue functions is also highlighted by mutations in matrix genes that give rise to genetic disorders with diverse clinical phenotypes. In this review, we present critical and emerging issues related to matrix assembly in tissues and the multitasking roles for ECM in diseases such as osteoarthritis, fibrosis, cancer, and genetic diseases. The mechanisms underlying the various matrix-based diseases are also discussed. Research focused on the highly dynamic 3D ECM networks will help to discover matrix-related causative abnormalities of diseases as well as novel diagnostic tools and therapeutic targets.
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Affiliation(s)
- Achilleas D Theocharis
- Biochemistry, Biochemical Analysis & Matrix Pathobiochemistry Research Group, Laboratory of Biochemistry, Department of Chemistry, University of Patras, Greece
| | - Dimitra Manou
- Biochemistry, Biochemical Analysis & Matrix Pathobiochemistry Research Group, Laboratory of Biochemistry, Department of Chemistry, University of Patras, Greece
| | - Nikos K Karamanos
- Biochemistry, Biochemical Analysis & Matrix Pathobiochemistry Research Group, Laboratory of Biochemistry, Department of Chemistry, University of Patras, Greece
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Beyeler J, Katsaros C, Chiquet M. Impaired Contracture of 3D Collagen Constructs by Fibronectin-Deficient Murine Fibroblasts. Front Physiol 2019; 10:166. [PMID: 30890950 PMCID: PMC6413635 DOI: 10.3389/fphys.2019.00166] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Accepted: 02/11/2019] [Indexed: 11/13/2022] Open
Abstract
Fibronectin (FN) is an extracellular matrix glycoprotein that is abundantly expressed by fibroblasts in contracting wounds, where it mediates cell adhesion, migration and proliferation. FN also efficiently binds to collagen. Therefore, we and others hypothesized that FN and its cellular receptor integrin α5β1 might be involved in collagen matrix contracture by acting as linkers. However, there are conflicting reports on this issue. Moreover, several publications suggest an important role of collagen-binding integrin receptors α2β1 and α11β1 in collagen matrix contracture. Therefore, the aim of the present study was to determine the contributions of FN-integrin α5β1 interactions relative to those of collagen receptors α2β1 and α11β1 in this process. To assess the role of cellular FN directly, we employed FN-deficient mouse fibroblasts, subjected them to a collagen gel contracture assay in vitro, and compared them to their wildtype counterparts. Exogenous FN was removed from serum-containing medium. For dissecting the role of major collagen receptors, we used two FN-deficient mouse fibroblast lines that both possess integrin α5β1 but differ in their collagen-binding integrins. Embryo-derived FN-null fibroblasts, which express α11- but no α2-integrin, barely spread and tended to cluster on collagen gels. Moreover, FN-null fibroblasts required exogenously added FN to assemble α5β1-integrin in fibrillar adhesion contacts, and to contract collagen matrices. In contrast, postnatal kidney fibroblasts were found to express α2- but barely α11-integrin. When FN expression was suppressed in these cells by shRNA transfection, they were able to spread on and partially contract collagen gels in the absence of exogenous FN. Also in this case, however, collagen contracture was stimulated by adding FN to the medium. Antibody to integrin α5β1 or RGD peptide completely abolished collagen contracture by FN-deficient fibroblasts stimulated by FN addition. We conclude that although collagen-binding integrins (especially α2β1) can mediate contracture of fibrillar collagen gels by murine fibroblasts to some extent, full activity is causally linked to the presence of pericellular FN and its receptor integrin α5β1.
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Affiliation(s)
- Joël Beyeler
- Laboratory for Oral Molecular Biology, Department of Orthodontics and Dentofacial Orthopedics, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Christos Katsaros
- Laboratory for Oral Molecular Biology, Department of Orthodontics and Dentofacial Orthopedics, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Matthias Chiquet
- Laboratory for Oral Molecular Biology, Department of Orthodontics and Dentofacial Orthopedics, School of Dental Medicine, University of Bern, Bern, Switzerland
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Walraven M, Hinz B. Therapeutic approaches to control tissue repair and fibrosis: Extracellular matrix as a game changer. Matrix Biol 2018; 71-72:205-224. [DOI: 10.1016/j.matbio.2018.02.020] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Revised: 02/22/2018] [Accepted: 02/23/2018] [Indexed: 02/08/2023]
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Cai D, Li Y, Zhou C, Jiang Y, Jiao J, Wu L. Comparative proteomics analysis of primary cutaneous amyloidosis. Exp Ther Med 2017; 14:3004-3012. [PMID: 28912854 PMCID: PMC5585729 DOI: 10.3892/etm.2017.4852] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Accepted: 05/25/2017] [Indexed: 01/02/2023] Open
Abstract
Primary cutaneous amyloidosis (PCA) is a localized skin disorder that is characterized by the abnormal deposition of amyloid in the extracellular matrix (ECM) of the dermis. The pathogenesis of PCA is poorly understood. The objective of the present study was to survey proteome changes in PCA lesions in order to gain insight into the molecular basis and pathogenesis of PCA. Total protein from PCA lesions and normal skin tissue samples were extracted and analyzed using the isobaric tags for relative and absolute quantitation technique. The function of differentially expressed proteins in PCA were analyzed by gene ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG) and protein-protein interaction analysis. The proteins that were most upregulated in PCA lesions were further analyzed by immunohistochemistry. A total of 1,032 proteins were identified in PCA lesions and control skin samples, with 51 proteins differentially expressed in PCA lesions, of which 27 were upregulated. In PCA lesions, the upregulated proteins were primarily extracellulary located. In addition, GO analysis indicated that the upregulated proteins were significantly enriched in the biological processes of epidermal development, collagen fiber organization and response to wounding (adjusted P<0.001). KEGG analysis indicated that the upregulated proteins were significantly enriched in the signaling pathways of cell communication, ECM receptor interaction and focal adhesion (adjusted P<0.001). Furthermore, the upregulated proteins were enriched in the molecular function of calcium ion binding, and the calcium binding proteins calmodulin-like protein 5, S100 calcium-binding protein A7 (S100A7)/fatty-acid binding protein and S100A8/A9 exhibited the highest levels of upregulation in PCA. This analysis of differentially expressed proteins in PCA suggests that increased focal adhesion, differentiation and wound healing is associated with the pathogenesis of PCA.
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Affiliation(s)
- Daxing Cai
- Department of Dermatology, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Yang Li
- Beijing Protein Innovation Co. Ltd., Beijing 101318, P.R. China
| | - Chunlei Zhou
- Department of Dermatology, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Yulin Jiang
- Beijing Protein Innovation Co. Ltd., Beijing 101318, P.R. China
| | - Jian Jiao
- Department of Dermatology, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Lin Wu
- Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing 100101, P.R. China
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Longo V, Rebulla P, Pupella S, Zolla L, Rinalducci S. Proteomic characterization of platelet gel releasate from adult peripheral and cord blood. Proteomics Clin Appl 2017; 10:870-82. [PMID: 27377258 DOI: 10.1002/prca.201500126] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 06/20/2016] [Accepted: 06/30/2016] [Indexed: 12/13/2022]
Abstract
PURPOSE Activated platelet gel (PG) derived from adult peripheral blood (APB) has been extensively used for topical therapy of various clinical conditions. Conversely, few observations on PG from umbilical cord blood (CB) have been reported so far. Although PG preparations are known to contain a high concentration of a large number of biological factors involved in inflammation and tissue repair, their comprehensive characterization is still missing. The innovative goal of our research was to use proteomics technologies in order to profile biologically active components in these blood derivatives. EXPERIMENTAL DESIGN Supernatants recovered from three independent APB and CB-derived PGs, prepared using batroxobin, were enriched for low-abundance proteins with ProteoMiner and subsequently analyzed by GeLC-MS/MS. RESULTS The 751 and 760 proteins were identified in the APB and CB-derived PG releasates, respectively. A core dataset including only proteins found in 2/3 and 3/3 biological replicates was generated and functionally characterized by gene ontology. Searching against Vesiclepedia database showed that 33% of our dataset consists of novel releasate proteins. Comparison between the two types of PG secretomes revealed that 117 proteins are present only in the APB-derived samples, 104 proteins are distinctive of the CB-derived samples, and 229 are in common. CONCLUSION AND CLINICAL RELEVANCE Our study highlighted a differential content of proteins supporting tissue repair and regeneration between APB and CB-derived PGs. These findings may help better identifying future appropriate clinical applications.
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Affiliation(s)
- Valentina Longo
- Department of Ecological and Biological Sciences (DEB), University of Tuscia, Viterbo, Italy
| | - Paolo Rebulla
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Simonetta Pupella
- Italian National Blood Centre, National Institute of Health, Rome, Italy
| | - Lello Zolla
- Department of Science and Technology for Agriculture, Forestry, Nature and Energy (DAFNE), University of Tuscia, Viterbo, Italy
| | - Sara Rinalducci
- Department of Ecological and Biological Sciences (DEB), University of Tuscia, Viterbo, Italy
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Hu H, Yang S, Zheng J, Mao G. Structure-based derivation of peptide inhibitors to target TGF-β1 receptor for the suppression of hypertrophic scarring fibroblast activation. Chem Biol Drug Des 2017; 90:345-351. [PMID: 28122173 DOI: 10.1111/cbdd.12954] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Revised: 12/09/2016] [Accepted: 01/17/2017] [Indexed: 01/01/2023]
Affiliation(s)
- Huan Hu
- Department of Plastic Surgery; Shanghai Jiaotong University Affiliated Sixth People’s Hospital; Shanghai China
| | - Songlin Yang
- Department of Plastic Surgery; Shanghai Jiaotong University Affiliated Sixth People’s Hospital; Shanghai China
| | - Jianghong Zheng
- Department of Plastic Surgery; Shanghai Jiaotong University Affiliated Sixth People’s Hospital; Shanghai China
| | - Guangyu Mao
- Department of Plastic Surgery; Shanghai Jiaotong University Affiliated Sixth People’s Hospital; Shanghai China
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Oka S, Shiraishi K, Matsuyama H. Effects of human chorionic gonadotropin on testicular interstitial tissues in men with non-obstructive azoospermia. Andrology 2016; 5:232-239. [DOI: 10.1111/andr.12292] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 08/18/2016] [Accepted: 09/12/2016] [Indexed: 12/16/2022]
Affiliation(s)
- S. Oka
- Department of Urology; Yamaguchi University School of Medicine; Yamaguchi Japan
| | - K. Shiraishi
- Department of Urology; Yamaguchi University School of Medicine; Yamaguchi Japan
| | - H. Matsuyama
- Department of Urology; Yamaguchi University School of Medicine; Yamaguchi Japan
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Zhao Y, Li X, Xu X, He Z, Cui L, Lv X. Lumican alleviates hypertrophic scarring by suppressing integrin-FAK signaling. Biochem Biophys Res Commun 2016; 480:153-159. [PMID: 27693693 DOI: 10.1016/j.bbrc.2016.09.159] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2016] [Accepted: 09/28/2016] [Indexed: 01/15/2023]
Abstract
Hypertrophic scarring (HS) is an overcompensation of wound healing that increases the risk of cosmetic disfigurement and functional impairment. No gold standard has been established for the treatment or prevention of HS. Our study aims to elucidate the expression and function of lumican in the pathogenesis of HS as well as the underlying mechanism involved in this procedure. An animal model of HS (rabbit ear) was established, and the Ad-lumican vectors were locally injected. Primary fibroblasts isolated from patients with hypertrophic burn scars were used in vitro. Histological and molecular changes in HS pathogenesis were evaluated. The results showed that lumican is significantly reduced in HS tissues and fibroblasts from HS patients as compared to normal skin or cells. Lumican levels were further suppressed in response to TGF-β stimulation. However, lumican upregulation effectively thinned the scar area and inhibited fibroblast proliferation and the cell cycle. Meanwhile, Ad-lumican administration suppressed the deposition of extracellular matrix, such as collagen and CTGF. Ad-lumican injected animals or fibroblasts presented comparable integrin α2β1 expression while greatly reduced phosphorylation of FAK compared to the negative control. Moreover, Ad-lumican administration largely enhanced the binding of lumican to integrin α2β1 and may thus inhibit the signaling propagation of collagen-integrin α2β1. Overall, the restoration of lumican levels contributed to suppressing the HS progression by inhibiting collagen-integrin α2β1-FAK signaling.
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Affiliation(s)
- Yuqian Zhao
- Department of Plastic Surgery, Tangdu Hospital, Fourth Military Medical University, Shaan xi, Xi'an 710038, China
| | - Xueyong Li
- Department of Plastic Surgery, Tangdu Hospital, Fourth Military Medical University, Shaan xi, Xi'an 710038, China.
| | - Xiaoli Xu
- Department of Plastic Surgery, Tangdu Hospital, Fourth Military Medical University, Shaan xi, Xi'an 710038, China
| | - Zhi He
- Department of Plastic Surgery, Tangdu Hospital, Fourth Military Medical University, Shaan xi, Xi'an 710038, China
| | - Lei Cui
- Department of Plastic Surgery, Tangdu Hospital, Fourth Military Medical University, Shaan xi, Xi'an 710038, China
| | - Xiaoxing Lv
- Department of Plastic Surgery, Tangdu Hospital, Fourth Military Medical University, Shaan xi, Xi'an 710038, China
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Yabe Y, Hagiwara Y, Tsuchiya M, Honda M, Hatori K, Sonofuchi K, Kanazawa K, Koide M, Sekiguchi T, Itaya N, Itoi E. Decreased elastic fibers and increased proteoglycans in the ligamentum flavum of patients with lumbar spinal canal stenosis. J Orthop Res 2016; 34:1241-7. [PMID: 26679090 DOI: 10.1002/jor.23130] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Accepted: 12/14/2015] [Indexed: 02/04/2023]
Abstract
Elastic fibers and proteoglycans are major components of the extracellular matrix and their changes have been reported in some pathological conditions. Further, recent studies have indicated that some glycosaminoglycans and proteoglycans inhibit elastic fiber assembly. The purpose of this study was to investigate changes of the elastic fibers and proteoglycans in the ligamentum flavum and analyze their relationships to thickening of the ligamentum flavum from lumbar spinal canal stenosis (LSCS). Ligamentum flavum samples were collected from 20 patients with LSCS (thickened flavum group) and 10 patients with lumbar disc herniation (non-thickened flavum group) as a control. Elastica-Masson staining and alcian blue staining were used to compare the relationship between the changes in the elastic fibers and proteoglycans. Gene and protein expressions of the elastic fibers and proteoglycans were analyzed by quantitative reverse transcription polymerase chain reaction and immunohistochemistry. Histological changes indicated that proteoglycans mainly increased on the dorsal side of the ligamentum flavum in accordance with the decreased elastic fibers in the thickened flavum group. The gene and protein expressions of fibrillin-2 and DANCE were significantly lower and decorin, lumican, osteoglycin, and versican were significantly higher in the thickened flavum group. Our study shows that elastic fibers decrease and proteoglycans increase in the thickened ligamentum flavum. Decreased gene expression of elastogenesis and disrupted elastic fiber assembly caused by increased proteoglycans may lead to a loss of elasticity in the thickened ligamentum flavum. Decreased elasticity may cause buckling of the tissue, which leads to thickening of the ligamentum flavum. © 2015 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 34:1241-1247, 2016.
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Affiliation(s)
- Yutaka Yabe
- Department of Orthopaedic Surgery, Graduate School of Medicine, Tohoku University, Sendai, Japan
| | - Yoshihiro Hagiwara
- Department of Orthopaedic Surgery, Graduate School of Medicine, Tohoku University, Sendai, Japan
| | | | - Masahito Honda
- Department of Otrhopaedic Surgery, Takeda General Hospital, Aizuwakamatsu, Japan
| | - Kouki Hatori
- Division of Advanced Prosthetic Dentistry, Graduate School of Dentistry, Tohoku University, Sendai, Japan
| | - Kazuaki Sonofuchi
- Department of Orthopaedic Surgery, Graduate School of Medicine, Tohoku University, Sendai, Japan
| | - Kenji Kanazawa
- Department of Orthopaedic Surgery, Graduate School of Medicine, Tohoku University, Sendai, Japan
| | - Masashi Koide
- Department of Orthopaedic Surgery, Graduate School of Medicine, Tohoku University, Sendai, Japan
| | - Takuya Sekiguchi
- Department of Orthopaedic Surgery, Graduate School of Medicine, Tohoku University, Sendai, Japan
| | - Nobuyuki Itaya
- Department of Orthopaedic Surgery, Graduate School of Medicine, Tohoku University, Sendai, Japan
| | - Eiji Itoi
- Department of Orthopaedic Surgery, Graduate School of Medicine, Tohoku University, Sendai, Japan
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Tracy LE, Minasian RA, Caterson E. Extracellular Matrix and Dermal Fibroblast Function in the Healing Wound. Adv Wound Care (New Rochelle) 2016; 5:119-136. [PMID: 26989578 DOI: 10.1089/wound.2014.0561] [Citation(s) in RCA: 555] [Impact Index Per Article: 69.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Significance: Fibroblasts play a critical role in normal wound healing. Various extracellular matrix (ECM) components, including collagens, fibrin, fibronectin, proteoglycans, glycosaminoglycans, and matricellular proteins, can be considered potent protagonists of fibroblast survival, migration, and metabolism. Recent Advances: Advances in tissue culture, tissue engineering, and ex vivo models have made the examination and precise measurements of ECM components in wound healing possible. Likewise, the development of specific transgenic animal models has created the opportunity to characterize the role of various ECM molecules in healing wounds. In addition, the recent characterization of new ECM molecules, including matricellular proteins, dermatopontin, and FACIT collagens (Fibril-Associated Collagens with Interrupted Triple helices), further demonstrates our cursory knowledge of the ECM in coordinated wound healing. Critical Issues: The manipulation and augmentation of ECM components in the healing wound is emerging in patient care, as demonstrated by the use of acellular dermal matrices, tissue scaffolds, and wound dressings or topical products bearing ECM proteins such as collagen, hyaluronan (HA), or elastin. Once thought of as neutral structural proteins, these molecules are now known to directly influence many aspects of cellular wound healing. Future Directions: The role that ECM molecules, such as CCN2, osteopontin, and secreted protein, acidic and rich in cysteine, play in signaling homing of fibroblast progenitor cells to sites of injury invites future research as we continue investigating the heterotopic origin of certain populations of fibroblasts in a healing wound. Likewise, research into differently sized fragments of the same polymeric ECM molecule is warranted as we learn that fragments of molecules such as HA and tenascin-C can have opposing effects on dermal fibroblasts.
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Affiliation(s)
- Lauren E. Tracy
- Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Raquel A. Minasian
- Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - E.J. Caterson
- Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
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Li Q, Chang Z, Oliveira G, Xiong M, Smith LM, Frey BL, Welham NV. Protein turnover during in vitro tissue engineering. Biomaterials 2015; 81:104-113. [PMID: 26724458 DOI: 10.1016/j.biomaterials.2015.12.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Revised: 12/01/2015] [Accepted: 12/02/2015] [Indexed: 10/22/2022]
Abstract
Repopulating acellular biological scaffolds with phenotypically appropriate cells is a promising approach for regenerating functional tissues and organs. Under this tissue engineering paradigm, reseeded cells are expected to remodel the scaffold by active protein synthesis and degradation; however, the rate and extent of this remodeling remain largely unknown. Here, we present a technique to measure dynamic proteome changes during in vitro remodeling of decellularized tissue by reseeded cells, using vocal fold mucosa as the model system. Decellularization and recellularization were optimized, and a stable isotope labeling strategy was developed to differentiate remnant proteins constituting the original scaffold from proteins newly synthesized by reseeded cells. Turnover of matrix and cellular proteins and the effects of cell-scaffold interaction were elucidated. This technique sheds new light on in vitro tissue remodeling and the process of tissue regeneration, and is readily applicable to other tissue and organ systems.
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Affiliation(s)
- Qiyao Li
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Zhen Chang
- Division of Otolaryngology, Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792, USA
| | - Gisele Oliveira
- Division of Otolaryngology, Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792, USA
| | - Maiyer Xiong
- Division of Otolaryngology, Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792, USA
| | - Lloyd M Smith
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Brian L Frey
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Nathan V Welham
- Division of Otolaryngology, Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792, USA.
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TNF-α-stimulated fibroblasts secrete lumican to promote fibrocyte differentiation. Proc Natl Acad Sci U S A 2015; 112:11929-34. [PMID: 26351669 DOI: 10.1073/pnas.1507387112] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
In healing wounds and fibrotic lesions, fibroblasts and monocyte-derived fibroblast-like cells called fibrocytes help to form scar tissue. Although fibrocytes promote collagen production by fibroblasts, little is known about signaling from fibroblasts to fibrocytes. In this report, we show that fibroblasts stimulated with the fibrocyte-secreted inflammatory signal tumor necrosis factor-α secrete the small leucine-rich proteoglycan lumican, and that lumican, but not the related proteoglycan decorin, promotes human fibrocyte differentiation. Lumican competes with the serum fibrocyte differentiation inhibitor serum amyloid P, but dominates over the fibroblast-secreted fibrocyte inhibitor Slit2. Lumican acts directly on monocytes, and unlike other factors that affect fibrocyte differentiation, lumican has no detectable effect on macrophage differentiation or polarization. α2β1, αMβ2, and αXβ2 integrins are needed for lumican-induced fibrocyte differentiation. In lung tissue from pulmonary fibrosis patients with relatively normal lung function, lumican is present at low levels throughout the tissue, whereas patients with advanced disease have pronounced lumican expression in the fibrotic lesions. These data may explain why fibrocytes are increased in fibrotic tissues, suggest that the levels of lumican in tissues may have a significant effect on the decision of monocytes to differentiate into fibrocytes, and indicate that modulating lumican signaling may be useful as a therapeutic for fibrosis.
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Syarina PNA, Karthivashan G, Abas F, Arulselvan P, Fakurazi S. Wound healing potential of Spirulina platensis extracts on human dermal fibroblast cells. EXCLI JOURNAL 2015; 14:385-93. [PMID: 27004048 PMCID: PMC4800779 DOI: 10.17179/excli2014-697] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Accepted: 01/16/2015] [Indexed: 11/10/2022]
Abstract
Blue-green alga (Spirulina platensis) is a well renowned nutri-supplement due to its high nutritional and medicinal properties. The aim of this study was to examine the wound healing efficiency of Spirulina platensis at various solvent extracts using in vitro scratch assay on human dermal fibroblast cells (HDF). Various gradient solvent extracts (50 μg/ml of methanolic, ethanolic and aqueous extracts) from Spirulina platensis were treated on HDF cells to acquire its wound healing properties through scratch assay and in this investigation we have used allantoin, as a positive control to compare efficacy among the phytoextracts. Interestingly, aqueous extract were found to stimulate proliferation and migration of HDF cells at given concentrations and enhanced closure rate of wound area within 24 hours after treatment. Methanolic and ethanolic extracts have shown proliferative effect, however these extracts did not aid in the migration and closure of wound area when compared to aqueous extract. Based on phytochemical profile of the plant extracts analyzed by LC-MS/MS, it was shown that compounds supposedly involved in accelerating wound healing are cinnamic acid, narigenin, kaempferol, temsirolimus, phosphatidylserine isomeric derivatives and sulphoquinovosyl diacylglycerol. Our findings concluded that blue-green algae may pose potential biomedical application to treat various chronic wounds especially in diabetes mellitus patients.
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Affiliation(s)
- Pauzi Nur Aimi Syarina
- Laboratory of Vaccines and Immunotherapeutics, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Govindarajan Karthivashan
- Laboratory of Vaccines and Immunotherapeutics, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Faridah Abas
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Palanisamy Arulselvan
- Laboratory of Vaccines and Immunotherapeutics, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Sharida Fakurazi
- Laboratory of Vaccines and Immunotherapeutics, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Department of Human Anatomy, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
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Ošt'ádal M, Eckhardt A, Herget J, Mikšík I, Dungl P, Chomiak J, Frydrychová M, Burian M. Proteomic analysis of the extracellular matrix in idiopathic pes equinovarus. Mol Cell Biochem 2014; 401:133-9. [PMID: 25472880 DOI: 10.1007/s11010-014-2300-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Accepted: 11/27/2014] [Indexed: 11/29/2022]
Abstract
Idiopathic pes equinovarus is a congenital deformity of the foot and lower leg defined as a fixation of the foot in adduction, supination, and varus. Although the pathogenesis of clubfoot remains unclear, it has been suggested that fibroblasts and growth factors are involved. To directly analyze the protein composition of the extracellular matrix in contracted tissue of patients with clubfoot. A total of 13 infants with idiopathic clubfoot treated with the Ponseti method were included in the present study. Tissue samples were obtained from patients undergoing surgery for relapsed clubfeet. Contracted tissues were obtained from the medial aspect of the talonavicular joint. Protein was extracted after digestion and delipidation using zip-tip C18. Individual collagenous fractions were detected using a chemiluminescent assay. Amino acid analysis of tissue samples revealed a predominance of collagens, namely collagen types I, III, and VI. The high content of glycine and h-proline suggests a predominance of collagens I and III. A total of 19 extracellular matrix proteins were identified. The major result of the present study was the observation that the extracellular matrix in clubfoot is composed of an additional 16 proteins, including collagens V, VI, and XII, as well as the previously described collagen types I and III and transforming growth factor β. The characterization of the general protein composition of the extracellular matrix in various regions of clubfoot may help in understanding the pathogenesis of this anomaly and, thus, contribute to the development of more efficacious therapeutic approaches.
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Affiliation(s)
- Martin Ošt'ádal
- Department of Orthopaedics, 1st Faculty of Medicine, University Hospital Bulovka, Charles University, Budínova 2, 180 00, Prague 8, Czech Republic,
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Nikitovic D, Papoutsidakis A, Karamanos NK, Tzanakakis GN. Lumican affects tumor cell functions, tumor–ECM interactions, angiogenesis and inflammatory response. Matrix Biol 2014; 35:206-14. [DOI: 10.1016/j.matbio.2013.09.003] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Revised: 09/16/2013] [Accepted: 09/16/2013] [Indexed: 11/17/2022]
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Parapuram SK, Hodge W. The integrin needle in the stromal haystack: emerging role in corneal physiology and pathology. J Cell Commun Signal 2014; 8:113-24. [PMID: 24604397 DOI: 10.1007/s12079-014-0230-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Accepted: 02/14/2014] [Indexed: 01/22/2023] Open
Abstract
Several studies have established the role of activated corneal keratocytes in the fibrosis of the cornea. However, the role of keratocytes in maintaining the structural integrity of a normal cornea is less appreciated. We focus on the probable functions of integrins in the eye and of the importance of integrin-mediated keratocyte interactions with stromal matrix in the maintenance of corneal integrity. We point out that further understanding of how keratocytes interact with their matrix could establish a novel direction in preventing corneal pathology including loss of structural integrity as in keratoconus or as in fibrosis of the corneal stroma.
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Affiliation(s)
- Sunil K Parapuram
- Department of Ophthalmology, University of Western Ontario, London, Ontario, N6A 4V2, Canada,
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