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Qiu ZK, Zhang MZ, Zhang WC, Li ZJ, Si LB, Long X, Yu NZ, Wang XJ. Role of HIF-1α in pathogenic mechanisms of keloids. J Cosmet Dermatol 2023; 22:1436-1448. [PMID: 36718786 DOI: 10.1111/jocd.15601] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 11/08/2022] [Accepted: 12/12/2022] [Indexed: 02/01/2023]
Abstract
BACKGROUDS AND OBJECTIVE Keloids are defined as overrepairing products that develop after skin lesions. Keloids are characterized by the proliferation of fibroblasts and the overaccumulation of extracellular matrix components (mainly collagen), leading to a locally hypoxic microenvironment. Hence, this article was aimed to review hypoxia in pathogenesis of keloids. METHODS We reviewed and summarized the relevant published studies. RESULTS Hypoxia results in the accumulation of hypoxia-inducible factor 1α (HIF-1α) in keloids, contributing to overactivation of the fibrotic signaling pathway, epithelial-mesenchymal transition, and changes in metabolism, eventually leading to aggravated fibrosis, infiltrative growth, and radiotherapy resistance. CONCLUSION It is, therefore, essential to understand the role of HIF-1α in the pathogenic mechanisms of keloids in order to develop new therapeutic approaches.
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Affiliation(s)
- Zi-Kai Qiu
- Department of Plastic and Reconstructive Surgery, Peking Union Medical college Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ming-Zi Zhang
- Department of Plastic and Reconstructive Surgery, Peking Union Medical college Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Wen-Chao Zhang
- Department of Plastic and Reconstructive Surgery, Peking Union Medical college Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhi-Jin Li
- Department of Plastic and Reconstructive Surgery, Peking Union Medical college Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lou-Bin Si
- Department of Plastic and Reconstructive Surgery, Peking Union Medical college Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xiao Long
- Department of Plastic and Reconstructive Surgery, Peking Union Medical college Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Nan-Ze Yu
- Department of Plastic and Reconstructive Surgery, Peking Union Medical college Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xiao-Jun Wang
- Department of Plastic and Reconstructive Surgery, Peking Union Medical college Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Khodeneva N, Sugimoto MA, Davan-Wetton CSA, Montero-Melendez T. Melanocortin therapies to resolve fibroblast-mediated diseases. Front Immunol 2023; 13:1084394. [PMID: 36793548 PMCID: PMC9922712 DOI: 10.3389/fimmu.2022.1084394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Accepted: 11/28/2022] [Indexed: 02/01/2023] Open
Abstract
Stromal cells have emerged as central drivers in multiple and diverse diseases, and consequently, as potential new cellular targets for the development of novel therapeutic strategies. In this review we revise the main roles of fibroblasts, not only as structural cells but also as players and regulators of immune responses. Important aspects like fibroblast heterogeneity, functional specialization and cellular plasticity are also discussed as well as the implications that these aspects may have in disease and in the design of novel therapeutics. An extensive revision of the actions of fibroblasts on different conditions uncovers the existence of numerous diseases in which this cell type plays a pathogenic role, either due to an exacerbation of their 'structural' side, or a dysregulation of their 'immune side'. In both cases, opportunities for the development of innovative therapeutic approaches exist. In this regard, here we revise the existing evidence pointing at the melanocortin pathway as a potential new strategy for the treatment and management of diseases mediated by aberrantly activated fibroblasts, including scleroderma or rheumatoid arthritis. This evidence derives from studies involving models of in vitro primary fibroblasts, in vivo models of disease as well as ongoing human clinical trials. Melanocortin drugs, which are pro-resolving mediators, have shown ability to reduce collagen deposition, activation of myofibroblasts, reduction of pro-inflammatory mediators and reduced scar formation. Here we also discuss existing challenges, both in approaching fibroblasts as therapeutic targets, and in the development of novel melanocortin drug candidates, that may help advance the field and deliver new medicines for the management of diseases with high medical needs.
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Increased Expression of Galectin-3 in Skin Fibrosis: Evidence from In Vitro and In Vivo Studies. Int J Mol Sci 2022; 23:ijms232315319. [PMID: 36499646 PMCID: PMC9737805 DOI: 10.3390/ijms232315319] [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: 10/12/2022] [Revised: 11/30/2022] [Accepted: 12/02/2022] [Indexed: 12/12/2022] Open
Abstract
Skin fibrosis is a hallmark of a wide array of dermatological diseases which can greatly impact the patients' quality of life. Galectin-3 (GAL-3) has emerged as a central regulator of tissue fibrosis, playing an important pro-fibrotic role in numerous organs. Various studies are highlighting its importance as a skin fibrotic diseases biomarker; however, there is a need for further studies that clarify its role. This paper aims to ascertain whether the expression of GAL-3 is increased in relevant in vitro and in vivo models of skin fibrosis. We studied the role of GAL-3 in vitro using normal human dermal fibroblasts (NHDF) and fibrocytes. In addition, we used a skin fibrosis murine model (BALB/c mice) and human biopsies of healthy or keloid tissue. GAL-3 expression was analyzed using real time PCR, Western blot and immunostaining techniques. We report a significantly increased expression of GAL-3 in NHDF and fibrocytes cell cultures following stimulation with transforming growth factor β1 (TGFβ1). In vivo, GAL-3 expression was increased in a murine model of systemic sclerosis and in human keloid biopsies. In sum, this study underlines the involvement of GAL-3 in skin fibrosis using several models of the disease and highlights its role as a relevant target.
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Bazid HAS, Samaka RM, Mousa MEA, Seleit I. Immunohistochemical expression of Axin-2, as an implication of the role of stem cell in scar pathogenesis and prognosis. J Cosmet Dermatol 2022; 21:6010-6020. [PMID: 35546288 DOI: 10.1111/jocd.15075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 04/14/2022] [Accepted: 05/09/2022] [Indexed: 01/06/2023]
Abstract
BACKGROUND Wound healing is a multi-phased process. A disruption in these phases could result in a persistent wound or an atypical scar. Wounding activates wingless proteins (Wnt) signaling, which aids in the healing process. Axis inhibition protein-2 regulates a variety of cellular activities through the Wnt and other pathways. AIM To assess the role of Axin-2 in patients with abnormal scars, using immunohistochemical study. METHODS This case-control study enrolled a total of 60 participants: 30 patients with abnormal scars (12 hypertrophic scars, 13 atrophic scars, and 5 keloid scars) and 30 age, sex, and site matched, apparently healthy controls. For immunohistochemistry examination of Axin-2 expression, skin samples were obtained from (i) lesional and (ii) perilesional skin of patients with aberrant scars, as well as (iii) normal control's skin. RESULTS Epidermal Axin-2 expression positivity, cellular topography, intensity, and H score showed significant differences between the groups (p < 0.05). In the dermis (fibroblast/myofibroblast), there were significant differences in Axin-2 expression positivity, location, intensity, and H score (p < 0.001 for all). The epidermal Axin-2 H score and the Manchester scale had a significant positive correlation (r = 0.832, p = 0.001). The epidermal Axin-2 H score and age (r = -0.576, p = 0.001), and the Stony Brook scale (r = -0.419, p = 0.021), had significant negative correlations. CONCLUSION Axin-2 overexpression might be accused in pathogenesis of abnormal scar and clinical worse scar outcome. In order to deprive scars of their regenerative cell pools, future scar therapies may target Axin-2 as a stem cell marker.
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Affiliation(s)
- Heba A S Bazid
- Department of Dermatology, Andrology and STDS, Faculty of Medicine, Menoufia University, Shebin El-Kom, Egypt
| | - Rehab Monir Samaka
- Department of Pathology, Faculty of Medicine, Menoufia University, Shebin El-Kom, Egypt
| | - Marwa E A Mousa
- Department of Dermatology, Andrology and STDS, Faculty of Medicine, Menoufia University, Shebin El-Kom, Egypt
| | - Iman Seleit
- Department of Dermatology, Andrology and STDS, Faculty of Medicine, Menoufia University, Shebin El-Kom, Egypt
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5
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Bellei B, Migliano E, Picardo M. Research update of adipose tissue-based therapies in regenerative dermatology. Stem Cell Rev Rep 2022; 18:1956-1973. [PMID: 35230644 DOI: 10.1007/s12015-022-10328-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/01/2022] [Indexed: 12/09/2022]
Abstract
Mesenchymal stromal/stem cells (MSCs) have a spontaneous propensity to support tissue homeostasis and regeneration. Among the several sources of MSCs, adipose-derived tissue stem cells (ADSCs) have received major interest due to the higher mesenchymal stem cells concentration, ease, and safety of access. However, since a significant part of the natural capacity of ADSCs to repair damaged tissue is ascribable to their secretory activity that combines mitogenic factors, cytokines, chemokines, lipids, and extracellular matrix components, several studies focused on cell-free strategies. Furthermore, adipose cell-free derivatives are becoming more attractive especially for non-volumizing purposes, such as most dermatological conditions. However, when keratinocytes, fibroblasts, melanocytes, adipocytes, and hair follicle cells might not be locally sourced, graft of materials containing concentrated ADSCs is preferred. The usage of extracellular elements of adipose tissue aims to promote a self-autonomous regenerative microenvironment in the receiving area restoring physiological homeostasis. Hence, ADSCs or their paracrine activity are currently being studied in several dermatological settings including wound healing, skin fibrosis, burn, and aging.The present work analyzing both preclinical and clinical experiences gives an overview of the efficacy of adipose tissue-derivatives like autologous fat, the stromal vascular fraction (SVF), purified ADSCs, secretome and extracellular matrix graft in the field of regenerative medicine for the skin.
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Affiliation(s)
- Barbara Bellei
- Laboratory of Cutaneous Physiopathology and Integrated Center of Metabolomics Research, San Gallicano Dermatological Institute, IRCCS, Via Elio Chianesi 53, 00144, Rome, Italy.
| | - Emilia Migliano
- Department of Plastic and Reconstructive Surgery, San Gallicano Dermatological Institute, IRCCS, Via Elio Chianesi 53, 00144, Rome, Italy
| | - Mauro Picardo
- Laboratory of Cutaneous Physiopathology and Integrated Center of Metabolomics Research, San Gallicano Dermatological Institute, IRCCS, Via Elio Chianesi 53, 00144, Rome, Italy
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6
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Guida S, Guida G, Goding CR. MC1R Functions, Expression, and Implications for Targeted Therapy. J Invest Dermatol 2021; 142:293-302.e1. [PMID: 34362555 DOI: 10.1016/j.jid.2021.06.018] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 06/14/2021] [Accepted: 06/17/2021] [Indexed: 12/23/2022]
Abstract
The G protein-coupled MC1R is expressed in melanocytes and has a pivotal role in human skin pigmentation, with reduced function in human genetic variants exhibiting a red hair phenotype and increased melanoma predisposition. Beyond its role in pigmentation, MC1R is increasingly recognized as promoting UV-induced DNA damage repair. Consequently, there is mounting interest in targeting MC1R for therapeutic benefit. However, whether MC1R expression is restricted to melanocytes or is more widely expressed remains a matter of debate. In this paper, we review MC1R function and highlight that unbiased analysis suggests that its expression is restricted to melanocytes, granulocytes, and the brain.
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Affiliation(s)
- Stefania Guida
- Dermatology Unit, Surgical, Medical and Dental Department of Morphological Sciences Related to Transplant, Oncological and Regenerative Medicine, University of Modena and Reggio Emilia, Modena, Italy.
| | - Gabriella Guida
- Molecular Biology Section, Department of Basic Medical Sciences, Neurosciences and Sense Organs, University of Bari Aldo Moro, Bari, Italy
| | - Colin Ronald Goding
- Ludwig Institute for Cancer Research, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, United Kingdom
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Cioanca AV, Wu C(S, Natoli R, Conway RM, McCluskey PJ, Jager MJ, Sitiwin EI, Eamegdool SS, Madigan MC. The role of melanocytes in the human choroidal microenvironment and inflammation: Insights from the transcriptome. Pigment Cell Melanoma Res 2021; 34:928-945. [DOI: 10.1111/pcmr.12972] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 02/22/2021] [Accepted: 03/13/2021] [Indexed: 12/23/2022]
Affiliation(s)
- Adrian V. Cioanca
- John Curtin School of Medical Research The Australian National University Canberra ACT Australia
| | - Chieh‐Lin (Stanley) Wu
- School of Optometry and Vision Science University of NSW Sydney NSW Australia
- Save Sight Institute University of Sydney Sydney NSW Australia
| | - Riccardo Natoli
- John Curtin School of Medical Research The Australian National University Canberra ACT Australia
| | - R. Max Conway
- Save Sight Institute University of Sydney Sydney NSW Australia
| | | | - Martine J Jager
- Department of Ophthalmology Leiden University Medical Center Leiden The Netherlands
| | | | - Steven S. Eamegdool
- Save Sight Institute University of Sydney Sydney NSW Australia
- Eye Genetics Research Unit Children’s Medical Research Institute Westmead Hospital Westmead NSW Australia
| | - Michele C. Madigan
- School of Optometry and Vision Science University of NSW Sydney NSW Australia
- Save Sight Institute University of Sydney Sydney NSW Australia
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8
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Dinparastisaleh R, Mirsaeidi M. Antifibrotic and Anti-Inflammatory Actions of α-Melanocytic Hormone: New Roles for an Old Player. Pharmaceuticals (Basel) 2021; 14:ph14010045. [PMID: 33430064 PMCID: PMC7827684 DOI: 10.3390/ph14010045] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Revised: 01/04/2021] [Accepted: 01/06/2021] [Indexed: 12/16/2022] Open
Abstract
The melanocortin system encompasses melanocortin peptides, five receptors, and two endogenous antagonists. Besides pigmentary effects generated by α-Melanocytic Hormone (α-MSH), new physiologic roles in sexual activity, exocrine secretion, energy homeostasis, as well as immunomodulatory actions, exerted by melanocortins, have been described recently. Among the most common and burdensome consequences of chronic inflammation is the development of fibrosis. Depending on the regenerative capacity of the affected tissue and the quality of the inflammatory response, the outcome is not always perfect, with the development of some fibrosis. Despite the heterogeneous etiology and clinical presentations, fibrosis in many pathological states follows the same path of activation or migration of fibroblasts, and the differentiation of fibroblasts to myofibroblasts, which produce collagen and α-SMA in fibrosing tissue. The melanocortin agonists might have favorable effects on the trajectories leading from tissue injury to inflammation, from inflammation to fibrosis, and from fibrosis to organ dysfunction. In this review we briefly summarized the data on structure, receptor signaling, and anti-inflammatory and anti-fibrotic properties of α-MSH and proposed that α-MSH analogues might be promising future therapeutic candidates for inflammatory and fibrotic diseases, regarding their favorable safety profile.
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Affiliation(s)
- Roshan Dinparastisaleh
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins University, Baltimore, MD 21218, USA;
| | - Mehdi Mirsaeidi
- Division of Pulmonary and Critical Care, University of Miami, Miami, FL 33146, USA
- Correspondence: ; Tel.: +1-305-243-1377
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10
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Lu YY, Fang CC, Hong CH, Wu CH, Lin YH, Chang KL, Lee CH. Nonmuscle Myosin II Activation Regulates Cell Proliferation, Cell Contraction, and Myofibroblast Differentiation in Keloid-Derived Fibroblasts. Adv Wound Care (New Rochelle) 2020; 9:491-501. [PMID: 32941122 DOI: 10.1089/wound.2019.0944] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Objective: Keloid is an abnormal scar that often develops in high-tension skin. It is caused by excessive fibroblast proliferation and collagen deposition. Nonmuscle myosin IIA (NM-IIA) is an important motor protein that regulates the mechanical transduction of cells. However, the role of NM-IIA in keloid pathogenesis remains unclear. Approach: NM-IIA expression was examined and compared in keloid skin and normal skin by immunofluorescence. The organization of smooth muscle actin (SMA)-mediated stress fibers in normal and keloid fibroblasts (NFs and KFs, respectively) were determined. Cell proliferation and cell contractility were measured in fibroblasts derived from normal and keloids. The NM-II pharmacological inhibitor (blebbistatin) and RNA interference were applied to block NM-IIA and investigate its regulatory role in SMA-mediated stress fibers, cell contractility, and cell proliferation after NM-IIA inhibition. Results: NM-IIA expression is increased in keloid tissue. Inhibition of NM-II by blebbistatin or targeting NM-IIA by RNA interference reduced transforming growth factor beta (TGF-β)-mediated SMA-mediated stress fiber formation, cell proliferation, and cell contractility of NFs and KFs. Although TGF-β failed to mediate phosphorylation of myosin light chain (pMLC, the activator of NM-II), pMLC can interact with SMA-mediated stress fiber. Finally, inhibition of NM-II by blebbistatin also reduced NF and KF proliferation after TGF-β stimulation. Innovation: NM-IIA synergizes with TGF-β to regulate fibroblast proliferation, contraction activity, and myofibroblasts differentiation. Conclusion: NM-IIA might be one of the therapeutic targets in keloids.
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Affiliation(s)
- Ying-Yi Lu
- Department of Dermatology, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Cheng-Chieh Fang
- Department of Medical Research, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Chien-Hui Hong
- Department of Dermatology, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
- Department of Dermatology, National Yang Ming University College of Medicine, Taipei, Taiwan
| | - Chieh-Hsin Wu
- Division of Neurosurgery, Department of Surgery, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
- Department of Surgery, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yu-Hung Lin
- Department of Medical Research, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Kee-Lung Chang
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Biochemistry, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chih-Hung Lee
- Department of Dermatology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
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Limandjaja GC, Niessen FB, Scheper RJ, Gibbs S. The Keloid Disorder: Heterogeneity, Histopathology, Mechanisms and Models. Front Cell Dev Biol 2020; 8:360. [PMID: 32528951 PMCID: PMC7264387 DOI: 10.3389/fcell.2020.00360] [Citation(s) in RCA: 136] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 04/22/2020] [Indexed: 12/22/2022] Open
Abstract
Keloids constitute an abnormal fibroproliferative wound healing response in which raised scar tissue grows excessively and invasively beyond the original wound borders. This review provides a comprehensive overview of several important themes in keloid research: namely keloid histopathology, heterogeneity, pathogenesis, and model systems. Although keloidal collagen versus nodules and α-SMA-immunoreactivity have been considered pathognomonic for keloids versus hypertrophic scars, conflicting results have been reported which will be discussed together with other histopathological keloid characteristics. Importantly, histopathological keloid abnormalities are also present in the keloid epidermis. Heterogeneity between and within keloids exists which is often not considered when interpreting results and may explain discrepancies between studies. At least two distinct keloid phenotypes exist, the superficial-spreading/flat keloids and the bulging/raised keloids. Within keloids, the periphery is often seen as the actively growing margin compared to the more quiescent center, although the opposite has also been reported. Interestingly, the normal skin directly surrounding keloids also shows partial keloid characteristics. Keloids are most likely to occur after an inciting stimulus such as (minor and disproportionate) dermal injury or an inflammatory process (environmental factors) at a keloid-prone anatomical site (topological factors) in a genetically predisposed individual (patient-related factors). The specific cellular abnormalities these various patient, topological and environmental factors generate to ultimately result in keloid scar formation are discussed. Existing keloid models can largely be divided into in vivo and in vitro systems including a number of subdivisions: human/animal, explant/culture, homotypic/heterotypic culture, direct/indirect co-culture, and 3D/monolayer culture. As skin physiology, immunology and wound healing is markedly different in animals and since keloids are exclusive to humans, there is a need for relevant human in vitro models. Of these, the direct co-culture systems that generate full thickness keloid equivalents appear the most promising and will be key to further advance keloid research on its pathogenesis and thereby ultimately advance keloid treatment. Finally, the recent change in keloid nomenclature will be discussed, which has moved away from identifying keloids solely as abnormal scars with a purely cosmetic association toward understanding keloids for the fibroproliferative disorder that they are.
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Affiliation(s)
- Grace C. Limandjaja
- Department of Molecular Cell Biology and Immunology, Amsterdam University Medical Center (location VUmc), Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Frank B. Niessen
- Department of Plastic Surgery, Amsterdam University Medical Center (location VUmc), Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Rik J. Scheper
- Department of Pathology, Amsterdam University Medical Center (location VUmc), Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Susan Gibbs
- Department of Molecular Cell Biology and Immunology, Amsterdam University Medical Center (location VUmc), Vrije Universiteit Amsterdam, Amsterdam, Netherlands
- Department of Oral Cell Biology, Academic Centre for Dentistry (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, Netherlands
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12
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Bellei B, Picardo M. Premature cell senescence in human skin: Dual face in chronic acquired pigmentary disorders. Ageing Res Rev 2020; 57:100981. [PMID: 31733332 DOI: 10.1016/j.arr.2019.100981] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 10/16/2019] [Accepted: 11/07/2019] [Indexed: 01/10/2023]
Abstract
Although senescence was originally described as an in vitro acquired cellular characteristic, it was recently recognized that senescence is physiologically and pathologically involved in aging and age-related diseases in vivo. The definition of cellular senescence has expanded to include the growth arrest caused by various cellular stresses, including DNA damage, inadequate mitochondria function, activated oncogene or tumor suppressor genes and oxidative stress. While senescence in normal aging involves various tissues over time and contributes to a decline in tissue function even with healthy aging, disease-induced premature senescence may be restricted to one or a few organs triggering a prolonged and more intense rate of accumulation of senescent cells than in normal aging. Organ-specific high senescence rate could lead to chronic diseases, especially in post-mitotic rich tissue. Recently, two opposite acquired pathological conditions related to skin pigmentation were described to be associated with premature senescence: vitiligo and melasma. In both cases, it was demonstrated that pathological dysfunctions are not restricted to melanocytes, the cell type responsible for melanin production and transport to surrounding keratinocytes. Similar to physiological melanogenesis, dermal and epidermal cells contribute directly and indirectly to deregulate skin pigmentation as a result of complex intercellular communication. Thus, despite senescence usually being reported as a uniform phenotype sharing the expression of characteristic markers, skin senescence involving mainly the dermal compartment and its paracrine function could be associated with the disappearance of melanocytes in vitiligo lesions and with the exacerbated activity of melanocytes in the hyperpigmentation spots of melasma. This suggests that the difference may arise in melanocyte intrinsic differences and/or in highly defined microenvironment peculiarities poorly explored at the current state of the art. A similar dualistic phenotype has been attributed to intratumoral stromal cells as cancer-associated fibroblasts presenting a senescent-like phenotype which influence the behavior of neoplastic cells in either a tumor-promoting or tumor-inhibiting manner. Here, we present a framework dissecting senescent-related molecular alterations shared by vitiligo and melasma patients and we also discuss disease-specific differences representing new challenges for treatment.
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Affiliation(s)
- Barbara Bellei
- Laboratory of Cutaneous Physiopathology and Integrated Center for Metabolomics Research, San Gallicano Dermatological Institute, IRCCS, Rome, Italy.
| | - Mauro Picardo
- Laboratory of Cutaneous Physiopathology and Integrated Center for Metabolomics Research, San Gallicano Dermatological Institute, IRCCS, Rome, Italy
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Mesdom P, Colle R, Lebigot E, Trabado S, Deflesselle E, Fève B, Becquemont L, Corruble E, Verstuyft C. Human Dermal Fibroblast: A Promising Cellular Model to Study Biological Mechanisms of Major Depression and Antidepressant Drug Response. Curr Neuropharmacol 2020; 18:301-318. [PMID: 31631822 PMCID: PMC7327943 DOI: 10.2174/1570159x17666191021141057] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 10/15/2019] [Accepted: 10/19/2019] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Human dermal fibroblasts (HDF) can be used as a cellular model relatively easily and without genetic engineering. Therefore, HDF represent an interesting tool to study several human diseases including psychiatric disorders. Despite major depressive disorder (MDD) being the second cause of disability in the world, the efficacy of antidepressant drug (AD) treatment is not sufficient and the underlying mechanisms of MDD and the mechanisms of action of AD are poorly understood. OBJECTIVE The aim of this review is to highlight the potential of HDF in the study of cellular mechanisms involved in MDD pathophysiology and in the action of AD response. METHODS The first part is a systematic review following PRISMA guidelines on the use of HDF in MDD research. The second part reports the mechanisms and molecules both present in HDF and relevant regarding MDD pathophysiology and AD mechanisms of action. RESULTS HDFs from MDD patients have been investigated in a relatively small number of works and most of them focused on the adrenergic pathway and metabolism-related gene expression as compared to HDF from healthy controls. The second part listed an important number of papers demonstrating the presence of many molecular processes in HDF, involved in MDD and AD mechanisms of action. CONCLUSION The imbalance in the number of papers between the two parts highlights the great and still underused potential of HDF, which stands out as a very promising tool in our understanding of MDD and AD mechanisms of action.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Céline Verstuyft
- Address correspondence to this author at the Laboratoire de Pharmacologie, Salle 416, Bâtiment Université, Hôpital du Kremlin Bicêtre, 78 rue du Général Leclerc, 94275 Le Kremlin-Bicêtre, France; Tel: +33145213588; E-mail:
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Bayer M, Tsiskarishvili N, Stegemann A, Böhm M, König S. Fast oxidation of α-melanocyte-stimulating hormone and derived peptides under laboratory conditions causes irreproducible results-Insights from studies of prolylcarboxypeptidase in human cell types. Pigment Cell Melanoma Res 2019; 33:378-382. [PMID: 31837203 DOI: 10.1111/pcmr.12852] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 11/21/2019] [Accepted: 12/10/2019] [Indexed: 11/27/2022]
Affiliation(s)
- Malte Bayer
- Core Unit Proteomics, Interdisciplinary Center for Clinical Research, University of Münster, Münster, Germany
| | | | - Agatha Stegemann
- Department of Dermatology, University of Münster, Münster, Germany
| | - Markus Böhm
- Department of Dermatology, University of Münster, Münster, Germany
| | - Simone König
- Core Unit Proteomics, Interdisciplinary Center for Clinical Research, University of Münster, Münster, Germany
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Moscowitz AE, Asif H, Lindenmaier LB, Calzadilla A, Zhang C, Mirsaeidi M. The Importance of Melanocortin Receptors and Their Agonists in Pulmonary Disease. Front Med (Lausanne) 2019; 6:145. [PMID: 31316990 PMCID: PMC6610340 DOI: 10.3389/fmed.2019.00145] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 06/10/2019] [Indexed: 12/13/2022] Open
Abstract
Melanocortin agonists are ancient neuropeptides that have steroidogenesis and anti-inflammatory properties. They activate melanocortin receptors (MCR), a family of five seven-transmembrane G-protein coupled receptors. MC1R and MC3R are mainly involved in immunomodulatory effects. Adrenocorticotropin hormone (ACTH) and alpha-Melanocortin stimulating hormone (α-MSH) reduce pro-inflammatory cytokines in several pulmonary inflammatory disorders including asthma, sarcoidosis, and the acute respiratory distress syndrome. They have also been shown to reduce fibrogenesis in animal models with pulmonary fibrosis. By understanding the functions of MCR in macrophages, T-helper cell type 1, and T-helper cell type 17, we may uncover the mechanism of action of melanocortin agonists in sarcoidosis. Further translational and clinical research is needed to define the role of ACTH and α-MSH in pulmonary diseases.
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Affiliation(s)
| | - Huda Asif
- Division of Pulmonary and Critical Care, University of Miami, Miami, FL, United States
| | | | - Andrew Calzadilla
- Division of Pulmonary and Critical Care, University of Miami, Miami, FL, United States
| | - Chongxu Zhang
- Section of Pulmonary, Miami VA Healthcare System, Miami, FL, United States
| | - Mehdi Mirsaeidi
- Division of Pulmonary and Critical Care, University of Miami, Miami, FL, United States.,Section of Pulmonary, Miami VA Healthcare System, Miami, FL, United States
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16
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Böhm M, Luger T. Are melanocortin peptides future therapeutics for cutaneous wound healing? Exp Dermatol 2019; 28:219-224. [PMID: 30661264 DOI: 10.1111/exd.13887] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 10/29/2018] [Accepted: 11/20/2018] [Indexed: 12/11/2022]
Abstract
Cutaneous wound healing is a complex process divided into different phases, that is an inflammatory, proliferative and remodelling phase. During these phases, a variety of resident skin cell types but also cells of the immune system orchestrate the healing process. In the last year, it has been shown that the majority of cutaneous cell types express the melanocortin 1 receptor (MC1R) that binds α-melanocyte-stimulating hormone (α-MSH) with high affinity and elicits pleiotropic biological effects, for example modulation of inflammation and immune responses, cytoprotection, antioxidative defense and collagen turnover. Truncated α-MSH peptides such as Lys-Pro-Val (KPV) as well as derivatives like Lys-d-Pro-Thr (KdPT), the latter containing the amino acid sequence 193-195 of interleukin-1β, have been found to possess anti-inflammatory effects but to lack the pigment-inducing activity of α-MSH. We propose here that such peptides are promising future candidates for the treatment of cutaneous wounds and skin ulcers. Experimental approaches in silico, in vitro, ex vivo and in animal models are outlined. This is followed by an unbiased discussion of the pro and contra arguments of such peptides as future candidates for the therapeutic management of cutaneous wounds and a review of the so-far available data on melanocortin peptides and derivatives in wound healing.
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Affiliation(s)
- Markus Böhm
- Department of Dermatology, Laboratory for Neuroendocrinology of the Skin and Interdisciplinary Endocrinology, University of Münster, Münster, Germany
| | - Thomas Luger
- Department of Dermatology, Laboratory for Neuroendocrinology of the Skin and Interdisciplinary Endocrinology, University of Münster, Münster, Germany
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Yi WJ, Su MY, Shi Y, Jiang S, Xu SZ, Lei TC. Degraded melanocores are incompetent to protect epidermal keratinocytes against UV damage. Cell Cycle 2018; 17:844-857. [PMID: 29623762 DOI: 10.1080/15384101.2018.1456601] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Melanosomes are membrane-bound intracellular organelles that are uniquely generated by melanocytes (MCs) in the basal layer of human epidermis. Highly pigmented mature melanosomes are transferred from MCs to keratinocytes (KCs), and then positioned in the supra-nuclear region to ensure protection against ultraviolet radiation (UVR). However, the molecular mechanism underlying melanosome (or melanin pigment) transfer remains enigmatic. Emerging evidence shows that exo-/endo-cytosis of the melanosome core (termed melanocore) has been considered as the main transfer manner between MCs and KCs. As KCs in the skin migrate up from the basal layer and undergo terminal differentiation, the melanocores they have taken up from MCs are subjected to degradation. In this study, we isolated individual melanocores from human MCs in culture and then induced their destruction/disruption using a physical approach. The results demonstrate that the ultrastructural integrity of melanocores is essential for their antioxidant and photoprotective properties. In addition, we also show that cathepsin V (CTSV), a lysosomal acid protease, is involved in melanocore degradation in calcium-induced differentiated KCs and is also suppressed in KCs following exposure to UVA or UVB radiation. Thus, our study demonstrates that change in the proportion of melanocores in the intact/undegraded state by CTSV-related degradation in KCs affects photoprotection of the skin.
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Affiliation(s)
- Wen-Juan Yi
- a Department of Dermatology , Renmin Hospital of Wuhan University , Wuhan 430060 , China
| | - Meng-Yun Su
- a Department of Dermatology , Renmin Hospital of Wuhan University , Wuhan 430060 , China
| | - Ying Shi
- a Department of Dermatology , Renmin Hospital of Wuhan University , Wuhan 430060 , China
| | - Shan Jiang
- a Department of Dermatology , Renmin Hospital of Wuhan University , Wuhan 430060 , China
| | - Shi-Zheng Xu
- a Department of Dermatology , Renmin Hospital of Wuhan University , Wuhan 430060 , China
| | - Tie-Chi Lei
- a Department of Dermatology , Renmin Hospital of Wuhan University , Wuhan 430060 , China
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18
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Lee WJ, Lee JS, Ahn HM, Na Y, Yang CE, Lee JH, Hong J, Yun CO. Decoy Wnt receptor (sLRP6E1E2)-expressing adenovirus induces anti-fibrotic effect via inhibition of Wnt and TGF-β signaling. Sci Rep 2017; 7:15070. [PMID: 29118355 PMCID: PMC5678438 DOI: 10.1038/s41598-017-14893-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 10/18/2017] [Indexed: 12/16/2022] Open
Abstract
Aberrant activation of the canonical Wingless type (Wnt) signaling pathway plays a key role in the development of hypertrophic scars and keloids, and this aberrant activation of Wnt pathway can be a potential target for the development of novel anti-fibrotic agents. In this study, we evaluated the anti-fibrotic potential of a soluble Wnt decoy receptor (sLRP6E1E2)-expressing non-replicating adenovirus (Ad; dE1-k35/sLRP6E1E2) on human dermal fibroblasts (HDFs), keloid fibroblasts (KFs), and keloid tissue explants. Higher Wnt3a and β-catenin expression was observed in the keloid region compared to the adjacent normal tissues. The activity of β-catenin and mRNA expression of type-I and -III collagen were significantly decreased following treatment with dE1-k35/sLRP6E1E2 in HDFs and KFs. The expression of LRP6, β-catenin, phosphorylated glycogen synthase kinase 3 beta, Smad 2/3 complex, and TGF-β1 were decreased in Wnt3a- or TGF-β1-activated HDFs, following administration of dE1-k35/sLRP6E1E2. Moreover, dE1-k35/sLRP6E1E2 markedly inhibited nuclear translocation of both β-catenin and Smad 2/3 complex. The expression levels of type-I and -III collagen, fibronectin, and elastin were also significantly reduced in keloid tissue explants after treatment with dE1-k35/sLRP6E1E2. These results indicate that Wnt decoy receptor-expressing Ad can degrade extracellular matrix in HDFs, KFs, and primary keloid tissue explants, and thus it may be beneficial for treatment of keloids.
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Affiliation(s)
- Won Jai Lee
- Institute for Human Tissue Restoration, Department of Plastic & Reconstructive Surgery, Yonsei University College of Medicine, Seoul, Korea
| | - Jung-Sun Lee
- Department of Bioengineering, College of Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Korea
| | - Hyo Min Ahn
- Department of Bioengineering, College of Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Korea
| | - Youjin Na
- Department of Bioengineering, College of Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Korea
| | - Chae Eun Yang
- Institute for Human Tissue Restoration, Department of Plastic & Reconstructive Surgery, Yonsei University College of Medicine, Seoul, Korea
| | - Ju Hee Lee
- Department of Dermatology, Yonsei University College of Medicine, Seoul, Korea
| | - JinWoo Hong
- Department of Bioengineering, College of Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Korea
| | - Chae-Ok Yun
- Department of Bioengineering, College of Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Korea.
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Quillinan N, Clark KEN, Youl B, Vernes J, McIntosh D, Haq S, Denton CP. Multiplex serum protein analysis reveals potential mechanisms and markers of response to hyperimmune caprine serum in systemic sclerosis. Arthritis Res Ther 2017; 19:45. [PMID: 28270187 PMCID: PMC5341430 DOI: 10.1186/s13075-017-1252-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 02/01/2017] [Indexed: 11/30/2022] Open
Abstract
Background Hyperimmune caprine serum (HICS) is a novel biological therapy with potential benefit for skin in established diffuse cutaneous systemic sclerosis. Here we report multiplex protein analysis of blood samples from a placebo-controlled phase II clinical trial and explore mechanisms of action and markers of response. Methods Patients were treated with HICS (n = 10) or placebo (n = 10) over 26 weeks, with follow-up open-label treatment to 52 weeks in 14 patients. Serum or plasma samples at baseline, 26 and 52 weeks were analysed using multiplex or individual immunoassays for 41 proteins. Patterns of change were analysed by clustering using Netwalker 1.0, Pearson coefficient and significance analysis of microarrays (SAM) correction. Results Cluster analysis, SAM multiplex testing and paired comparison of individual analytes identified proteins that were upregulated or downregulated during treatment with HICS. There was upregulation of the hypothalamo-pituitary-adrenal axis after HICS treatment evidenced by increases in α-MSH and ACTH in cases treated with HICS. Interestingly, significant increase in PIIINP was associated with HICS treatment and improved MRSS suggesting that this may be a marker of extracellular matrix turnover. Other relevant factors reduced in HICS-treated patients compared with controls, although not reaching statistical significance included COMP, CCL2, IL6, TIMP2, Fractalkine and TGFβ1 levels. Conclusions Our results suggest mechanisms of action for HICS, including upregulation of α-MSH, that has been shown to be anti-fibrotic in preclinical models, and possible markers to be included in future trials targeting skin in diffuse cutaneous systemic sclerosis. Trial registration Eudract, No. 2007-003122-24. ClinTrials.gov, No. NCT00769028. Registered 7 October 2008. Electronic supplementary material The online version of this article (doi:10.1186/s13075-017-1252-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Niamh Quillinan
- Centre for Rheumatology, UCL Division of Medicine, Royal Free Campus, Rowland Hill Street, London, NW3 2PF, UK
| | - Kristina E N Clark
- Centre for Rheumatology, UCL Division of Medicine, Royal Free Campus, Rowland Hill Street, London, NW3 2PF, UK
| | - Bryan Youl
- Department of Neurophysiology, Royal Free London NHS Foundation Trust, London, UK
| | | | | | | | - Christopher P Denton
- Centre for Rheumatology, UCL Division of Medicine, Royal Free Campus, Rowland Hill Street, London, NW3 2PF, UK.
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20
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Liu F, Hamer MA, Deelen J, Lall JS, Jacobs L, van Heemst D, Murray PG, Wollstein A, de Craen AJM, Uh HW, Zeng C, Hofman A, Uitterlinden AG, Houwing-Duistermaat JJ, Pardo LM, Beekman M, Slagboom PE, Nijsten T, Kayser M, Gunn DA. The MC1R Gene and Youthful Looks. Curr Biol 2016; 26:1213-20. [PMID: 27133870 DOI: 10.1016/j.cub.2016.03.008] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Revised: 02/12/2016] [Accepted: 03/01/2016] [Indexed: 11/28/2022]
Abstract
Looking young for one's age has been a desire since time immemorial. This desire is attributable to the belief that appearance reflects health and fecundity. Indeed, perceived age predicts survival [1] and associates with molecular markers of aging such as telomere length [2]. Understanding the underlying molecular biology of perceived age is vital for identifying new aging therapies among other purposes, but studies are lacking thus far. As a first attempt, we performed genome-wide association studies (GWASs) of perceived facial age and wrinkling estimated from digital facial images by analyzing over eight million SNPs in 2,693 elderly Dutch Europeans from the Rotterdam Study. The strongest genetic associations with perceived facial age were found for multiple SNPs in the MC1R gene (p < 1 × 10(-7)). This effect was enhanced for a compound heterozygosity marker constructed from four pre-selected functional MC1R SNPs (p = 2.69 × 10(-12)), which was replicated in 599 Dutch Europeans from the Leiden Longevity Study (p = 0.042) and in 1,173 Europeans of the TwinsUK Study (p = 3 × 10(-3)). Individuals carrying the homozygote MC1R risk haplotype looked on average up to 2 years older than non-carriers. This association was independent of age, sex, skin color, and sun damage (wrinkling, pigmented spots) and persisted through different sun-exposure levels. Hence, a role for MC1R in youthful looks independent of its known melanin synthesis function is suggested. Our study uncovers the first genetic evidence explaining why some people look older for their age and provides new leads for further investigating the biological basis of how old or young people look.
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Affiliation(s)
- Fan Liu
- Key Laboratory of Genomic and Precision Medicine, China Gastrointestinal Cancer Research Center, Beijing Institute of Genomics, Chinese Academy of Sciences, No.1 Beichen West Road, Chaoyang District, Beijing 100101, China; Department of Genetic Identification, Erasmus MC University Medical Center Rotterdam, P.O. Box 2040, 3000 CA Rotterdam, the Netherlands
| | - Merel A Hamer
- Department of Dermatology, Erasmus MC University Medical Center Rotterdam, P.O. Box 2040, 3000 CA Rotterdam, the Netherlands
| | - Joris Deelen
- Department of Molecular Epidemiology, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, the Netherlands
| | - Japal S Lall
- Unilever R&D, Colworth Science Park, Sharnbrook, Bedfordshire MK44 1LQ, UK
| | - Leonie Jacobs
- Department of Dermatology, Erasmus MC University Medical Center Rotterdam, P.O. Box 2040, 3000 CA Rotterdam, the Netherlands
| | - Diana van Heemst
- Department of Gerontology and Geriatrics, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, the Netherlands
| | - Peter G Murray
- Unilever R&D, Colworth Science Park, Sharnbrook, Bedfordshire MK44 1LQ, UK
| | - Andreas Wollstein
- Department of Genetic Identification, Erasmus MC University Medical Center Rotterdam, P.O. Box 2040, 3000 CA Rotterdam, the Netherlands; Section of Evolutionary Biology, Department of Biology II, Ludwig Maximilians University Munich, Großhaderner Str. 2, 82152 Planegg-Martinsried, Germany
| | - Anton J M de Craen
- Department of Gerontology and Geriatrics, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, the Netherlands
| | - Hae-Won Uh
- Department of Medical Statistics and Bioinformatics, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, the Netherlands
| | - Changqing Zeng
- Key Laboratory of Genomic and Precision Medicine, China Gastrointestinal Cancer Research Center, Beijing Institute of Genomics, Chinese Academy of Sciences, No.1 Beichen West Road, Chaoyang District, Beijing 100101, China
| | - Albert Hofman
- Department of Epidemiology, Erasmus MC University Medical Center Rotterdam, P.O. Box 2040, 3000 CA Rotterdam, the Netherlands
| | - André G Uitterlinden
- Department of Epidemiology, Erasmus MC University Medical Center Rotterdam, P.O. Box 2040, 3000 CA Rotterdam, the Netherlands; Department of Internal Medicine, Erasmus MC University Medical Center Rotterdam, P.O. Box 2040, 3000 CA Rotterdam, the Netherlands
| | - Jeanine J Houwing-Duistermaat
- Department of Medical Statistics and Bioinformatics, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, the Netherlands; Department of Statistics, School of Mathematics, University of Leeds, Leeds LS2 9JT, UK
| | - Luba M Pardo
- Department of Dermatology, Erasmus MC University Medical Center Rotterdam, P.O. Box 2040, 3000 CA Rotterdam, the Netherlands
| | - Marian Beekman
- Department of Molecular Epidemiology, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, the Netherlands
| | - P Eline Slagboom
- Department of Molecular Epidemiology, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, the Netherlands
| | - Tamar Nijsten
- Department of Dermatology, Erasmus MC University Medical Center Rotterdam, P.O. Box 2040, 3000 CA Rotterdam, the Netherlands
| | - Manfred Kayser
- Department of Genetic Identification, Erasmus MC University Medical Center Rotterdam, P.O. Box 2040, 3000 CA Rotterdam, the Netherlands.
| | - David A Gunn
- Unilever R&D, Colworth Science Park, Sharnbrook, Bedfordshire MK44 1LQ, UK.
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21
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Andrews JP, Marttala J, Macarak E, Rosenbloom J, Uitto J. Keloids: The paradigm of skin fibrosis - Pathomechanisms and treatment. Matrix Biol 2016; 51:37-46. [PMID: 26844756 DOI: 10.1016/j.matbio.2016.01.013] [Citation(s) in RCA: 220] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Keloids, fibroproliferative dermal tumors with effusive accumulation of extracellular matrix (ECM) components, particularly collagen, result from excessive expression of growth factors and cytokines. The etiology of keloids is unknown but they occur after dermal injury in genetically susceptible individuals, and they cause both physical and psychological distress for the affected individuals. Several treatment methods for keloids exist, including the combination therapy of surgical excision followed by intralesional steroid therapy, however, they have high recurrence rate regardless of the current treatment method. Improved understanding of the pathomechanisms leading to keloid formation will hopefully identify pathways that serve as specific targets to improve therapy for this devastating, currently intractable, disorder.
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Affiliation(s)
- Jonathan P Andrews
- Department of Dermatology and Cutaneous Biology, The Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Jaana Marttala
- Department of Dermatology and Cutaneous Biology, The Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Edward Macarak
- Department of Dermatology and Cutaneous Biology, The Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA; The Joan and Joel Rosenbloom Research Center for Fibrotic Diseases, Thomas Jefferson University, Philadelphia, PA, USA
| | - Joel Rosenbloom
- Department of Dermatology and Cutaneous Biology, The Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA; The Joan and Joel Rosenbloom Research Center for Fibrotic Diseases, Thomas Jefferson University, Philadelphia, PA, USA
| | - Jouni Uitto
- Department of Dermatology and Cutaneous Biology, The Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA; Jefferson Institute of Molecular Medicine, Thomas Jefferson University, Philadelphia, PA, USA.
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22
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JIA HAIYAN, SHI YING, LUO LONGFEI, JIANG GUAN, ZHOU QIONG, XU SHIZHENG, LEI TIECHI. Asymmetric stem-cell division ensures sustained keratinocyte hyperproliferation in psoriatic skin lesions. Int J Mol Med 2016; 37:359-68. [PMID: 26707630 PMCID: PMC4716788 DOI: 10.3892/ijmm.2015.2445] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2015] [Accepted: 12/14/2015] [Indexed: 01/21/2023] Open
Abstract
Excessive expansion of the transit-amplifying (TA) cell compartment is a distinct morphological characteristic of psoriatic epidermal hyperplasia. In order to examine the activation of basal stem cells and how they replenish such an enlarged compartment of TA cells in psoriatic epidermis, we utilized a BrdU labeling method to monitor mitotic stem cells in a mouse model of psoriasiform dermatitis, which was induced by imiquimod. Our results showed that perpendicular and parallel cell division characteristics of dividing stem cells existed in the inflamed epidermis. When we analyzed template‑DNA strand segregation in trypsin-dissociated human psoriatic keratinocytes using BrdU pulse-chase labeling, we found that the percentage of asymmetric segregation of BrdU was significantly increased in the cell pairs of psoriatic epidermal cells compared with normal epidermal cells. Furthermore, we also examined the effects of both interleukin (IL)-17A and IL-22 cytokines on the differentiation status of cultured human keratinocytes. The results indicated that both cytokines had synergistic effects on passage-one epidermal cell sheets derived from skin explants and also on cultured keratinocytes, were involved in the maintenance of the undifferentiated stem cell phenotype, and these results suggest an efficient mechanism for preventing the premature loss of basal stem-cell pools in the pro-inflammatory cytokine-enriched milieu of the psoriatic epidermis. Our findings suggest that inhibition of hyperactive stem cells represents a potential therapeutic target to combat recalcitrant epidermal hyperplasia in psoriasis.
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Affiliation(s)
- HAI-YAN JIA
- Department of Dermatology, Wuhan University, Renmin Hospital, Wuhan, Hubei 430060, P.R. China
| | - YING SHI
- Department of Dermatology, Wuhan University, Renmin Hospital, Wuhan, Hubei 430060, P.R. China
| | - LONG-FEI LUO
- Department of Dermatology, Wuhan University, Renmin Hospital, Wuhan, Hubei 430060, P.R. China
| | - GUAN JIANG
- Department of Dermatology, Wuhan University, Renmin Hospital, Wuhan, Hubei 430060, P.R. China
| | - QIONG ZHOU
- Department of Dermatology, Wuhan University, Renmin Hospital, Wuhan, Hubei 430060, P.R. China
| | - SHI-ZHENG XU
- Department of Dermatology, Wuhan University, Renmin Hospital, Wuhan, Hubei 430060, P.R. China
| | - TIE-CHI LEI
- Department of Dermatology, Wuhan University, Renmin Hospital, Wuhan, Hubei 430060, P.R. China
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23
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Race and Melanocortin 1 Receptor Polymorphism R163Q Are Associated with Post-Burn Hypertrophic Scarring: A Prospective Cohort Study. J Invest Dermatol 2015; 135:2394-2401. [PMID: 26030184 PMCID: PMC4567912 DOI: 10.1038/jid.2015.197] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 05/04/2015] [Accepted: 05/17/2015] [Indexed: 12/22/2022]
Abstract
The genetic determinants of post-burn hypertrophic scarring (HTS) are unknown, and melanocortin 1 receptor (MC1R) loss-of-function leads to fibrogenesis in experimental models. To examine the associations between self-identified race and MC1R single- nucleotide polymorphisms (SNPs) with severity of post-burn HTS, we conducted a prospective cohort study of burned adults admitted to our institution over 7 years. Subjects were evaluated using the Vancouver Scar Scale (VSS), asked to rate their itching, and genotyped for 8 MC1R SNPs. Testing for association with severe HTS (VSS>7) and itch severity (0-10) was based on multivariate regression with adjustment for known risk factors. Of 425 subjects analyzed, 77% identified as White. The prevalence of severe HTS (VSS>7) was 49%, and the mean itch score was 3.9. In multivariate analysis, Asian (prevalence ratio [PR] 1.54; 95% CI: 1.13-2.10), Black/African American (PR 1.86; 95% CI: 1.42-2.45), and Native American (PR 1.87; 95% CI: 1.48-2.35) race were independently associated with severe HTS. MC1R SNP R163Q was also significantly (P<0.001) associated with severe HTS. Asian race (linear regression coefficient 1.32; 95% CI: 0.23-2.40) but not MC1R SNP genotype was associated with increased itch score. We conclude that MC1R genotype may influence post-burn scarring.
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Lee WJ, Ahn HM, Roh H, Na Y, Choi IK, Lee JH, Kim YO, Lew DH, Yun CO. Decorin-expressing adenovirus decreases collagen synthesis and upregulates MMP expression in keloid fibroblasts and keloid spheroids. Exp Dermatol 2015; 24:591-7. [PMID: 25865370 DOI: 10.1111/exd.12719] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/08/2015] [Indexed: 02/06/2023]
Abstract
Decorin is a natural transforming growth factor-β1 (TGF-β1) antagonist. Reduced decorin synthesis is associated with dermal scarring, and increased decorin expression appears to reduce scar tissue formation. To investigate the therapeutic potential of decorin for keloids, human dermal fibroblasts (HDFs) and keloid-derived fibroblasts (KFs) were transduced with decorin-expressing adenovirus (dE1-RGD/GFP/DCN), and we examined the therapeutic potential of decorin-expressing Ad for treating pathologic skin fibrosis. Decorin expression was examined by immunofluorescence assay on keloid tissues. HDFs and KFs were transduced with dE1-RGD/GFP/DCN or control virus, and protein levels of decorin, epidermal growth factor receptor (EGFR) and secreted TGF-β1 were assessed by Western blotting and ELISA. And type I and III collagen, and matrix metalloproteinase-1 (MMP-1) and matrix metalloproteinase-3 (MMP-3) mRNA levels were measured by real-time RT-PCR. Additionally, we immunohistochemically investigated the expression levels of the major extracellular matrix (ECM) proteins in keloid spheroids transduced with dE1-RGD/GFP/DCN. Lower decorin expression was observed in the keloid region compared to adjacent normal tissues. After treatment with dE1-RGD/GFP/DCN, secreted TGF-β1 and EGFR protein expressions were decreased in TGF-β1-treated HDFs and KFs. Also, type I and III collagen mRNA levels were decreased, and the expression of MMP-1 and MMP-3 mRNA was strongly upregulated. In addition, the expression of type I and III collagen, fibronectin and elastin was significantly reduced in dE1-RGD/GFP/DCN-transduced keloid spheroids. These results support the utility of decorin-expressing adenovirus to reduce collagen synthesis in KFs and keloid spheroid, which may be highly beneficial in treating keloids.
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Affiliation(s)
- Won Jai Lee
- Department of Plastic and Reconstructive Surgery, College of Medicine, Institute for Human Tissue Restoration, Yonsei University, Seoul, Korea
| | - Hyo Min Ahn
- Department of Bioengineering, College of Engineering, Hanyang University, Seoul, Korea
| | - Hyun Roh
- Department of Plastic and Reconstructive Surgery, College of Medicine, Institute for Human Tissue Restoration, Yonsei University, Seoul, Korea
| | - Youjin Na
- Department of Bioengineering, College of Engineering, Hanyang University, Seoul, Korea
| | - Il-Kyu Choi
- Department of Bioengineering, College of Engineering, Hanyang University, Seoul, Korea
| | - Ju Hee Lee
- Department of Dermatology and Cutaneous Biology Research Institute, College of Medicine, Yonsei University, Seoul, Korea
| | - Yong Oock Kim
- Department of Plastic and Reconstructive Surgery, College of Medicine, Institute for Human Tissue Restoration, Yonsei University, Seoul, Korea
| | - Dae Hyun Lew
- Department of Plastic and Reconstructive Surgery, College of Medicine, Institute for Human Tissue Restoration, Yonsei University, Seoul, Korea
| | - Chae-Ok Yun
- Department of Bioengineering, College of Engineering, Hanyang University, Seoul, Korea
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