1
|
Vladimir K, Perišić MM, Štorga M, Mostashari A, Khanin R. Epigenetics insights from perceived facial aging. Clin Epigenetics 2023; 15:176. [PMID: 37924108 PMCID: PMC10623707 DOI: 10.1186/s13148-023-01590-x] [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: 06/01/2023] [Accepted: 10/23/2023] [Indexed: 11/06/2023] Open
Abstract
Facial aging is the most visible manifestation of aging. People desire to look younger than others of the same chronological age. Hence, perceived age is often used as a visible marker of aging, while biological age, often estimated by methylation markers, is used as an objective measure of age. Multiple epigenetics-based clocks have been developed for accurate estimation of general biological age and the age of specific organs, including the skin. However, it is not clear whether the epigenetic biomarkers (CpGs) used in these clocks are drivers of aging processes or consequences of aging. In this proof-of-concept study, we integrate data from GWAS on perceived facial aging and EWAS on CpGs measured in blood. By running EW Mendelian randomization, we identify hundreds of putative CpGs that are potentially causal to perceived facial aging with similar numbers of damaging markers that causally drive or accelerate facial aging and protective methylation markers that causally slow down or protect from aging. We further demonstrate that while candidate causal CpGs have little overlap with known epigenetics-based clocks, they affect genes or proteins with known functions in skin aging, such as skin pigmentation, elastin, and collagen levels. Overall, our results suggest that blood methylation markers reflect facial aging processes, and thus can be used to quantify skin aging and develop anti-aging solutions that target the root causes of aging.
Collapse
Affiliation(s)
- Klemo Vladimir
- LifeNome Inc., New York, 10018, NY, USA
- Faculty of Electrical Engineering and Computing, University of Zagreb, 10000, Zagreb, Croatia
| | - Marija Majda Perišić
- LifeNome Inc., New York, 10018, NY, USA
- Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, 10000, Zagreb, Croatia
| | - Mario Štorga
- LifeNome Inc., New York, 10018, NY, USA
- Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, 10000, Zagreb, Croatia
| | | | - Raya Khanin
- LifeNome Inc., New York, 10018, NY, USA.
- Bioinformatics Core, Memorial Sloan-Kettering Cancer Center, New York, 10065, NY, USA.
| |
Collapse
|
2
|
Lichen Sclerosus: A Current Landscape of Autoimmune and Genetic Interplay. Diagnostics (Basel) 2022; 12:diagnostics12123070. [PMID: 36553077 PMCID: PMC9777366 DOI: 10.3390/diagnostics12123070] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 11/24/2022] [Accepted: 11/30/2022] [Indexed: 12/12/2022] Open
Abstract
Lichen sclerosus (LS) is an acquired chronic inflammatory dermatosis predominantly affecting the anogenital area with recalcitrant itching and soreness. Progressive or persistent LS may cause urinary and sexual disturbances and an increased risk of local skin malignancy with a prevalence of up to 11%. Investigations on lipoid proteinosis, an autosomal recessive genodermatosis caused by loss-of-function mutations in the extracellular matrix protein 1 (ECM1) gene, led to the discovery of a humoral autoimmune response to the identical molecule in LS, providing evidence for an autoimmune and genetic counterpart targeting ECM1. This paper provides an overview of the fundamental importance and current issue of better understanding the immunopathology attributed to ECM1 in LS. Furthermore, we highlight the pleiotropic action of ECM1 in homeostatic and structural maintenance of skin biology as well as in a variety of human disorders possibly associated with impaired or gained ECM1 function, including the inflammatory bowel disease ulcerative colitis, Th2 cell-dependent airway allergies, T-cell and B-cell activation, and the demyelinating central nervous system disease multiple sclerosis, to facilitate sharing the concept as a plausible therapeutic target of this attractive molecule.
Collapse
|
3
|
Extracellular matrix protein-1 secretory isoform promotes ovarian cancer through increasing alternative mRNA splicing and stemness. Nat Commun 2021; 12:4230. [PMID: 34244494 PMCID: PMC8270969 DOI: 10.1038/s41467-021-24315-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 06/10/2021] [Indexed: 12/27/2022] Open
Abstract
Extracellular matrix protein-1 (ECM1) promotes tumorigenesis in multiple organs but the mechanisms associated to ECM1 isoform subtypes have yet to be clarified. We report in this study that the secretory ECM1a isoform induces tumorigenesis through the GPR motif binding to integrin αXβ2 and the activation of AKT/FAK/Rho/cytoskeleton signaling. The ATP binding cassette subfamily G member 1 (ABCG1) transduces the ECM1a-integrin αXβ2 interactive signaling to facilitate the phosphorylation of AKT/FAK/Rho/cytoskeletal molecules and to confer cancer cell cisplatin resistance through up-regulation of the CD326-mediated cell stemness. On the contrary, the non-secretory ECM1b isoform binds myosin and blocks its phosphorylation, impairing cytoskeleton-mediated signaling and tumorigenesis. Moreover, ECM1a induces the expression of the heterogeneous nuclear ribonucleoprotein L like (hnRNPLL) protein to favor the alternative mRNA splicing generating ECM1a. ECM1a, αXβ2, ABCG1 and hnRNPLL higher expression associates with poor survival, while ECM1b higher expression associates with good survival. These results highlight ECM1a, integrin αXβ2, hnRNPLL and ABCG1 as potential targets for treating cancers associated with ECM1-activated signaling. Extracellular matrix protein 1 (ECM1) has been associated with cancer but the underlying molecular mechanisms are not clear. Here, the authors show that while ECM1b isoform is a tumour suppressor, the secreted isoform ECM1a promotes tumourigenesis and chemoresistance through increasing stemness and alternative mRNA splicing in ovarian cancer.
Collapse
|
4
|
Kumar N, Singh NK. "Emerging role of Novel Seminal Plasma Bio-markers in Male Infertility: A Review". Eur J Obstet Gynecol Reprod Biol 2020; 253:170-179. [PMID: 32871440 DOI: 10.1016/j.ejogrb.2020.08.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 07/28/2020] [Accepted: 08/21/2020] [Indexed: 02/03/2023]
Abstract
Male infertility has emerged as an important cause of infertility worldwide. There are many factors affecting male fertility and research is going on to know impact of various factors on sperm functions. Semen analysis is gold standard diagnostic test for male infertility, but it is crude method for estimation of male infertility as seminal composition gets affected by environmental factors, infections, other pathologies, hence, results of semen analysis either becomes normal/ambiguous, leading to failure of diagnosis and delayed treatment. Hence, with need of newer, better tests for assessing male factor infertility, seminal plasma is being tested for biomarkers. Seminal plasma is considered gold mine for male fertility as it contains molecules from male reproductive glands which play important role in sperm function. Study of seminal plasma molecules can give an idea about sperm concentration, motility, morphology and cause of infertility and can serve as biomarkers for male infertility. Present review briefs on some of these novel seminal plasma biomarkers which may play significant role in male fertility and can be used in future for better identification, assessment of infertile males. METHODOLOGY Literature from 1985 to 2019 was searched from various databases including PUBMED, SCOPUS, Google Scholar on seminal plasma biomarkers using keywords: "seminal plasma protein biomarkers", "novel seminal plasma markers and male infertility", "hormones in seminal plasma and male infertility", "oxidative stress and male infertility", "Reactive Oxygen Species and sperm DNA", "immunoinfertility". INCLUSION CRITERIA All full length original or review articles or abstracts on seminal plasma markers and male infertility published in English language in various peer-reviewed journals were considered. EXCLUSION CRITERIA Articles published in languages other than English were excluded from the study. RESULTS Seminal plasma is a big reservoir of molecules derived from the various male reproductive glands which can be used as potential biomarkers of male fertility. CONCLUSION Hence, seminal plasma biomarkers can be used in future for better assessment of male factor infertility, its causes and may play an important role in management of male factor infertility.
Collapse
Affiliation(s)
- Naina Kumar
- Department of Obstetrics and Gynecology, All India Institute of Medical Sciences, Mangalagiri, 522503, Guntur, Andhra Pradesh, India.
| | - Namit Kant Singh
- Department of Otorhinolaryngology, Katuri Medical College and Hospital, Guntur, Andhra Pradesh, India.
| |
Collapse
|
5
|
Ma J, Liu M, Wang Y, Xin C, Zhang H, Chen S, Zheng X, Zhang X, Xiao F, Yang S. Quantitative proteomics analysis of young and elderly skin with DIA mass spectrometry reveals new skin aging-related proteins. Aging (Albany NY) 2020; 12:13529-13554. [PMID: 32602849 PMCID: PMC7377841 DOI: 10.18632/aging.103461] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 05/27/2020] [Indexed: 12/16/2022]
Abstract
Skin aging is a specific manifestation of the physiological aging process that occurs in virtually all organisms. In this study, we used data independent acquisition mass spectrometry to perform a comparative analysis of protein expression in volar forearm skin samples from of 20 healthy young and elderly Chinese individuals. Our quantitative proteomic analysis identified a total of 95 differentially expressed proteins (DEPs) in aged skin compared to young skin. Enrichment analyses of these DEPs (57 upregulated and 38 downregulated proteins) based on the GO, KEGG, and KOG databases revealed functional clusters associated with immunity and inflammation, oxidative stress, biosynthesis and metabolism, proteases, cell proliferation, cell differentiation, and apoptosis. We also found that GAPDH, which was downregulated in aged skin samples, was the top hub gene in a protein-protein interaction network analysis. Some of the DEPs identified herein had been previously correlated with aging of the skin and other organs, while others may represent novel age-related entities. Our non-invasive proteomics analysis of human epidermal proteins may guide future research on skin aging to help develop treatments for age-related skin conditions and rejuvenation.
Collapse
Affiliation(s)
- Jing Ma
- Department of Dermatology of First Affiliated Hospital, and Institute of Dermatology, Anhui Medical University, Hefei, Anhui, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, Hefei, Anhui, China
| | - Mengting Liu
- Department of Dermatology of First Affiliated Hospital, and Institute of Dermatology, Anhui Medical University, Hefei, Anhui, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, Hefei, Anhui, China
| | - Yaochi Wang
- Department of Dermatology of First Affiliated Hospital, and Institute of Dermatology, Anhui Medical University, Hefei, Anhui, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, Hefei, Anhui, China
| | - Cong Xin
- Department of Dermatology of First Affiliated Hospital, and Institute of Dermatology, Anhui Medical University, Hefei, Anhui, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, Hefei, Anhui, China
| | - Hui Zhang
- Department of Dermatology of First Affiliated Hospital, and Institute of Dermatology, Anhui Medical University, Hefei, Anhui, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, Hefei, Anhui, China
| | - Shirui Chen
- Department of Dermatology of First Affiliated Hospital, and Institute of Dermatology, Anhui Medical University, Hefei, Anhui, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, Hefei, Anhui, China
| | - Xiaodong Zheng
- Department of Dermatology of First Affiliated Hospital, and Institute of Dermatology, Anhui Medical University, Hefei, Anhui, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, Hefei, Anhui, China
| | - Xuejun Zhang
- Department of Dermatology of First Affiliated Hospital, and Institute of Dermatology, Anhui Medical University, Hefei, Anhui, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, Hefei, Anhui, China
| | - Fengli Xiao
- Department of Dermatology of First Affiliated Hospital, and Institute of Dermatology, Anhui Medical University, Hefei, Anhui, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, Hefei, Anhui, China.,The Center for Scientific Research of Anhui Medical University, Hefei, Anhui, China
| | - Sen Yang
- Department of Dermatology of First Affiliated Hospital, and Institute of Dermatology, Anhui Medical University, Hefei, Anhui, China.,Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, Hefei, Anhui, China
| |
Collapse
|
6
|
Hardy SA, Mabotuwana NS, Murtha LA, Coulter B, Sanchez-Bezanilla S, Al-Omary MS, Senanayake T, Loering S, Starkey M, Lee RJ, Rainer PP, Hansbro PM, Boyle AJ. Novel role of extracellular matrix protein 1 (ECM1) in cardiac aging and myocardial infarction. PLoS One 2019; 14:e0212230. [PMID: 30789914 PMCID: PMC6383988 DOI: 10.1371/journal.pone.0212230] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Accepted: 01/29/2019] [Indexed: 12/28/2022] Open
Abstract
INTRODUCTION The prevalence of heart failure increases in the aging population and following myocardial infarction (MI), yet the extracellular matrix (ECM) remodeling underpinning the development of aging- and MI-associated cardiac fibrosis remains poorly understood. A link between inflammation and fibrosis in the heart has long been appreciated, but has mechanistically remained undefined. We investigated the expression of a novel protein, extracellular matrix protein 1 (ECM1) in the aging and infarcted heart. METHODS Young adult (3-month old) and aging (18-month old) C57BL/6 mice were assessed. Young mice were subjected to left anterior descending artery-ligation to induce MI, or transverse aortic constriction (TAC) surgery to induce pressure-overload cardiomyopathy. Left ventricle (LV) tissue was collected early and late post-MI/TAC. Bone marrow cells (BMCs) were isolated from young healthy mice, and subject to flow cytometry. Human cardiac fibroblast (CFb), myocyte, and coronary artery endothelial & smooth muscle cell lines were cultured; human CFbs were treated with recombinant ECM1. Primary mouse CFbs were cultured and treated with recombinant angiotensin-II or TGF-β1. Immunoblotting, qPCR and mRNA fluorescent in-situ hybridization (mRNA-FISH) were conducted on LV tissue and cells. RESULTS ECM1 expression was upregulated in the aging LV, and in the infarct zone of the LV early post-MI. No significant differences in ECM1 expression were found late post-MI or at any time-point post-TAC. ECM1 was not expressed in any resident cardiac cells, but ECM1 was highly expressed in BMCs, with high ECM1 expression in granulocytes. Flow cytometry of bone marrow revealed ECM1 expression in large granular leucocytes. mRNA-FISH revealed that ECM1 was indeed expressed by inflammatory cells in the infarct zone at day-3 post-MI. ECM1 stimulation of CFbs induced ERK1/2 and AKT activation and collagen-I expression, suggesting a pro-fibrotic role. CONCLUSIONS ECM1 expression is increased in ageing and infarcted hearts but is not expressed by resident cardiac cells. Instead it is expressed by bone marrow-derived granulocytes. ECM1 is sufficient to induce cardiac fibroblast stimulation in vitro. Our findings suggest ECM1 is released from infiltrating inflammatory cells, which leads to cardiac fibroblast stimulation and fibrosis in aging and MI. ECM1 may be a novel intermediary between inflammation and fibrosis.
Collapse
Affiliation(s)
- Sean A. Hardy
- School of Medicine and Public Health, The University of Newcastle, Callaghan, NSW, Australia
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Nishani S. Mabotuwana
- School of Medicine and Public Health, The University of Newcastle, Callaghan, NSW, Australia
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Lucy A. Murtha
- School of Medicine and Public Health, The University of Newcastle, Callaghan, NSW, Australia
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Brianna Coulter
- School of Medicine and Public Health, The University of Newcastle, Callaghan, NSW, Australia
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Sonia Sanchez-Bezanilla
- School of Biomedical Sciences and Pharmacy, The University of Newcastle, Callaghan, NSW, Australia
- Priority Research Centre’s for Healthy Lungs and GrowUpWell, School of Biomedical Sciences and Pharmacy, The University of Newcastle, Callaghan, NSW, Australia
| | - Mohammed S. Al-Omary
- School of Medicine and Public Health, The University of Newcastle, Callaghan, NSW, Australia
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
- Department of Cardiovascular Medicine, John Hunter Hospital, New Lambton Heights, NSW, Australia
| | - Tharindu Senanayake
- School of Medicine and Public Health, The University of Newcastle, Callaghan, NSW, Australia
| | - Svenja Loering
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
- School of Biomedical Sciences and Pharmacy, The University of Newcastle, Callaghan, NSW, Australia
- Priority Research Centre’s for Healthy Lungs and GrowUpWell, School of Biomedical Sciences and Pharmacy, The University of Newcastle, Callaghan, NSW, Australia
| | - Malcolm Starkey
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
- School of Biomedical Sciences and Pharmacy, The University of Newcastle, Callaghan, NSW, Australia
- Priority Research Centre’s for Healthy Lungs and GrowUpWell, School of Biomedical Sciences and Pharmacy, The University of Newcastle, Callaghan, NSW, Australia
| | - Randall J. Lee
- Department of Medicine, Division of Cardiology, University of California San Francisco, San Francisco, CA, United States of America
- Edyth and Eli Broad Center for Regenerative Medicine and Stem Cell Research, University of California San Francisco, San Francisco, CA, United States of America
| | - Peter P. Rainer
- Division of Cardiology, Medical University of Graz, Graz, Austria
| | - Philip M. Hansbro
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
- School of Biomedical Sciences and Pharmacy, The University of Newcastle, Callaghan, NSW, Australia
- Priority Research Centre’s for Healthy Lungs and GrowUpWell, School of Biomedical Sciences and Pharmacy, The University of Newcastle, Callaghan, NSW, Australia
- Centre for inflammation, Centenary Institute, Sydney, NSW, Australia
- University of Technology, Faculty of Science, Ultimo, NSW, Australia
| | - Andrew J. Boyle
- School of Medicine and Public Health, The University of Newcastle, Callaghan, NSW, Australia
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
- Department of Cardiovascular Medicine, John Hunter Hospital, New Lambton Heights, NSW, Australia
- * E-mail:
| |
Collapse
|
7
|
Abstract
Lichen sclerosus et atrophicus (LSA) is a chronic inflammatory scarring disease with a predilection for the anogenital area; however, 15%-20% of LSA cases are extragenital. The folliculocentric variant is rarely reported and less well understood. The authors report a rare case of extragenital, folliculocentric LSA in a 10-year-old girl. The patient presented to the dermatology clinic for evaluation of an asymptomatic eruption of the arms and legs, with no vaginal or vulvar involvement. Physical examination revealed the presence of numerous 2-4 mm, mostly perifollicular, hypopigmented, slightly atrophic papules and plaques. Many of the lesions had a central keratotic plug. Cutaneous histopathological examination showed features of LSA. Based on clinical and histological findings, folliculocentric extragenital LSA was diagnosed.
Collapse
|
8
|
Su P, Chen S, Zheng YH, Zhou HY, Yan CH, Yu F, Zhang YG, He L, Zhang Y, Wang Y, Wu L, Wu X, Yu B, Ma LY, Yang Z, Wang J, Zhao G, Zhu J, Wu ZY, Sun B. Novel Function of Extracellular Matrix Protein 1 in Suppressing Th17 Cell Development in Experimental Autoimmune Encephalomyelitis. THE JOURNAL OF IMMUNOLOGY 2016; 197:1054-64. [PMID: 27316685 DOI: 10.4049/jimmunol.1502457] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Accepted: 05/21/2016] [Indexed: 12/24/2022]
Abstract
Multiple sclerosis (MS) is a chronic inflammatory disease of the CNS characterized by demyelination and axonal damage. Experimental autoimmune encephalomyelitis (EAE) is a well-established animal model for human MS. Although Th17 cells are important for disease induction, Th2 cells are inhibitory in this process. In this article, we report the effect of a Th2 cell product, extracellular matrix protein 1 (ECM1), on the differentiation of Th17 cells and the development of EAE. Our results demonstrated that ECM1 administration from day 1 to day 7 following the EAE induction could ameliorate the Th17 cell responses and EAE development in vivo. Further study of the mechanism revealed that ECM1 could interact with αv integrin on dendritic cells and block the αv integrin-mediated activation of latent TGF-β, resulting in an inhibition of Th17 cell differentiation at an early stage of EAE induction. Furthermore, overexpression of ECM1 in vivo significantly inhibited the Th17 cell response and EAE induction in ECM1 transgenic mice. Overall, our work has identified a novel function of ECM1 in inhibiting Th17 cell differentiation in the EAE model, suggesting that ECM1 may have the potential to be used in clinical applications for understanding the pathogenesis of MS and its diagnosis.
Collapse
Affiliation(s)
- Pan Su
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Sheng Chen
- Department of Neurology and Research Center of Neurology in Second Affiliated Hospital, and the Collaborative Innovation Center for Brain Science, Zhejiang University School of Medicine, Hangzhou 310058, China; Department of Neurology and Institute of Neurology, First Affiliated Hospital, Fujian Medical University, Fuzhou 350004, China
| | - Yu Han Zheng
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Hai Yan Zhou
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Cheng Hua Yan
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Fang Yu
- Laboratory of Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892
| | - Ya Guang Zhang
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Lan He
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Yuan Zhang
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Yanming Wang
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Lei Wu
- Department of Neurology and Research Center of Neurology in Second Affiliated Hospital, and the Collaborative Innovation Center for Brain Science, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Xiaoai Wu
- Novo Nordisk Research Center, Beijing 100000, China
| | - Bingke Yu
- Novo Nordisk Research Center, Beijing 100000, China
| | - Li Yan Ma
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Zhiru Yang
- Novo Nordisk Research Center, Beijing 100000, China
| | - Jianhua Wang
- Key Laboratory of Molecular Virology and Immunology, Institute Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China; and
| | - Guixian Zhao
- Department of Neurology and Institute of Neurology, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Jinfang Zhu
- Laboratory of Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892;
| | - Zhi-Ying Wu
- Department of Neurology and Research Center of Neurology in Second Affiliated Hospital, and the Collaborative Innovation Center for Brain Science, Zhejiang University School of Medicine, Hangzhou 310058, China;
| | - Bing Sun
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China; Key Laboratory of Molecular Virology and Immunology, Institute Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China; and
| |
Collapse
|
9
|
Rocha EM, Alves M, Rios JD, Dartt DA. The aging lacrimal gland: changes in structure and function. Ocul Surf 2015; 6:162-74. [PMID: 18827949 DOI: 10.1016/s1542-0124(12)70177-5] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The afferent nerves of the cornea and conjunctiva, efferent nerves of the lacrimal gland, and the lacrimal gland are a functional unit that works cooperatively to produce the aqueous component of tears. A decrease in the lacrimal gland secretory function can lead to dry eye disease. Because aging is a risk factor for dry eye disease, study of the changes in the function of the lacrimal gland functional unit with age is important for developing treatments to prevent dry eye disease. No one mechanism is known to induce the changes that occur with aging, although multiple different mechanisms have been associated with aging. These fall into two theoretical categories: programmed theories of aging (immunological, genetic, apoptotic, and neuroendocrine) and error theories of aging (protein alteration, somatic mutation, etc). Lacrimal glands undergo structural and functional alteration with increasing age. In mouse models of aging, it has been shown that neural stimulation of protein secretion is an early target of aging, accompanied by an increase in mast cells and lipofuscin accumulation. Hyperglycemia and increased lymphocytic infiltration can contribute to this loss of function at older ages. These findings suggest that an increase in oxidative stress may play a role in the loss of lacrimal gland function with age. For the afferent and efferent neural components of the lacrimal gland functional unit, immune or inflammatory mediated decrease in nerve function could contribute to loss of lacrimal gland secretion with age. More research in this area is critically needed.
Collapse
Affiliation(s)
- Eduardo M Rocha
- From the Department of Ophthalmology, Otorhinolaringology, and head and Neck Surgery, faculty of Medicine of Ribeirao Preto, Sao Paulo University Ribeirao, Preto, SP, Brazil; Laboratory of Clinical Physiopathology, Department of Clinical Medicine, faculty of Medical Sciences, State University of Campinas, Campinas, SP, Brazil; and Schepens Eye Research Institute and Department of Ophthalmology, harvard Medical School, Boston MA 02114 USA
| | | | | | | |
Collapse
|
10
|
Nasir M, Rahman SB, Sieber CMK, Mir A, Latif A, Ahmad N, Malik SA, Hameed A. Identification of recurrent c.742G>T nonsense mutation in ECM1 in Pakistani families suffering from lipoid proteinosis. Mol Biol Rep 2014; 41:2085-92. [PMID: 24413997 DOI: 10.1007/s11033-014-3057-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Accepted: 01/04/2014] [Indexed: 11/28/2022]
Abstract
Lipoid proteinosis (LP) is one of the rare, recessive autosomal disorders clinically characterized by widespread deposition of hyaline-like material in the skin, mucosa and viscera. Classical features include beaded eyelid papules, laryngeal infiltration and hoarseness of voice caused by pathogenic mutations in the ECM1 gene located on 1q21.2. In present study ethnically different, three consanguineous Pakistani families with typical cutaneous features of LP were analysed to investigate the underlying molecular basis. PCR based linkage analysis using microsatellite markers localized the families to locus 1q21.2, harboring ECM1 gene. To identify the mutation in the candidate gene (ECM1), Sanger sequencing was carried out. All the families were found to carry c.742 G>T nonsense mutation in exon 7 of the ECM1 gene that resulted in a truncated ECM1 protein containing 247 amino acids instead of 540 (p.E248X). To further investigate the impact and importance of mutation in LP pathogenesis we applied different bioinformatics tools. In silico studies has predicted lack of functional domains and 65 % shorter ECM1 mutant protein. It is the first report of recurrence mutation from Pakistan as c.742G>T nonsense mutation was found in three ethnically different Pakistani families with LP. Study strengthens the conclusion that c.742G>T mutation is the pathological cause of LP. Furthermore, data also support the fact that exon 7 is one of the most common hot spots of pathological mutations in ECM1. The absence of functional domains and truncated sequence most likely contribute to the lack of ECM1 function and thereby influence several aspects of dermal homeostasis that leads to LP pathogenesis.
Collapse
Affiliation(s)
- Muhammad Nasir
- Institute of Biomedical & Genetic Engineering, 24-Mauve Area, G-9/1, Islamabad, Pakistan,
| | | | | | | | | | | | | | | |
Collapse
|
11
|
Chen H, Jia WD, Li JS, Wang W, Xu GL, Ma JL, Ren WH, Ge YS, Yu JH, Liu WB, Zhang CH, Wang YC. Extracellular matrix protein 1, a novel prognostic factor, is associated with metastatic potential of hepatocellular carcinoma. Med Oncol 2010; 28 Suppl 1:S318-25. [PMID: 21128013 DOI: 10.1007/s12032-010-9763-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2010] [Accepted: 11/22/2010] [Indexed: 10/18/2022]
Abstract
Extracellular matrix protein 1 (ECM1) is a glycoprotein involved in a number of biologic processes. To investigate the expression of ECM1 in hepatocellular carcinoma (HCC) and determine its correlation with tumor progression and prognosis, the expression levels of ECM1 in three HCC and one normal liver cell lines, tumor, and corresponding adjacent tissues from 18 HCC patients were analyzed by reverse transcription polymerase chain reaction (RT-PCR) and Western blotting. Immunohistochemistry assay was used to determine the expression of ECM1 in HCC and corresponding paracarcinomatous tissues from 77 patients. The results of Western blotting were consistent with the results from RT-PCR analysis of ECM1 mRNA expression. Among the four cell lines, the expression level in HCCLM3, which with the highest metastatic potential, was significantly higher than that with lower (P < 0.05); while ECM1 expression was not detected in normal liver cell line. Expression level of ECM1 was significantly increased in HCC compared with adjacent and normal liver tissues (P < 0.05). Immunohistochemically, the expression of ECM1 in HCC was judged to be positive in 57 (74.0%) cases, significantly higher than that in corresponding paracarcinomatous tissues (P < 0.01), and it was associated with tumor size (P = 0.036), number of tumor nodules (P = 0.048), TNM stage (P = 0.029), and vascular invasion (P = 0.007). In particular, the expression of ECM1 was found to be an independent factor for predicting overall and disease-free survival of HCC. The expression level of ECM1 was associated with metastatic potential of HCC, and its abnormal expression may be used as a predictive factor of unfavorable prognosis and recurrence for HCC after surgery.
Collapse
Affiliation(s)
- Hao Chen
- Center for the Study of Liver Cancer and Department of Hepatic Surgery, Anhui Provincial Hospital, Anhui Medical University, No 17 Lujiang Road, Hefei, 230001 Anhui, China
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
12
|
Merregaert J, Van Langen J, Hansen U, Ponsaerts P, El Ghalbzouri A, Steenackers E, Van Ostade X, Sercu S. Phospholipid scramblase 1 is secreted by a lipid raft-dependent pathway and interacts with the extracellular matrix protein 1 in the dermal epidermal junction zone of human skin. J Biol Chem 2010; 285:37823-37. [PMID: 20870722 DOI: 10.1074/jbc.m110.136408] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
We examined the interaction of ECM1 (extracellular matrix protein 1) using yeast two-hybrid screening and identified the type II transmembrane protein, PLSCR1 (phospholipid scramblase 1), as a binding partner. This interaction was then confirmed by in vitro and in vivo co-immunoprecipitation experiments, and additional pull-down experiments with GST-tagged ECM1a fragments localized this interaction to occur within the tandem repeat region of ECM1a. Furthermore, immunohistochemical staining revealed a partial overlap of ECM1 and PLSCR1 in human skin at the basal epidermal cell layer. Moreover, in human skin equivalents, both proteins are expressed at the basal membrane in a dermal fibroblast-dependent manner. Next, immunogold electron microscopy of ultrathin human skin sections showed that ECM1 and PLSCR1 co-localize in the extracellular matrix, and using antibodies against ECM1 or PLSCR1 cross-linked to magnetic immunobeads, we were able to demonstrate PLSCR1-ECM1 interaction in human skin extracts. Furthermore, whereas ECM1 is secreted by the endoplasmic/Golgi-dependent pathway, PLSCR1 release from HaCaT keratinocytes occurs via a lipid raft-dependent mechanism, and is deposited in the extracellular matrix. In summary, we here demonstrate that PLSCR1 interacts with the tandem repeat region of ECM1a in the dermal epidermal junction zone of human skin and provide for the first time experimental evidence that PLSCR1 is secreted by an unconventional secretion pathway. These data suggest that PLSCR1 is a multifunctional protein that can function both inside and outside of the cell and together with ECM1 may play a regulatory role in human skin.
Collapse
Affiliation(s)
- Joseph Merregaert
- Laboratory of Molecular Biotechnology, University Medical Center Groningen, A. Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | | | | | | | | | | | | | | |
Collapse
|
13
|
Profiling the Response of Human Hair Follicles to Ultraviolet Radiation. J Invest Dermatol 2009; 129:1790-804. [DOI: 10.1038/jid.2008.418] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
14
|
Gonzaga ER. Role of UV light in photodamage, skin aging, and skin cancer: importance of photoprotection. Am J Clin Dermatol 2009; 10 Suppl 1:19-24. [PMID: 19209950 DOI: 10.2165/0128071-200910001-00004] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Solar, and particularly UV, radiation causes molecular and cellular damage with resultant histopathologic and clinical degenerative changes, leading in turn to photosensitivity, photo-aging, and skin cancer. While our bodies have some natural UV defenses, additional protection from the sun is essential, including sun avoidance, physical protection, and sunscreen use. Sun avoidance includes limiting exposure during peak UV times (10am-4pm), avoiding UV-reflective surfaces such as sand, snow and water, and eliminating photosensitizing drugs. Physical protection includes wearing photoprotective clothing such as a broad-brimmed hat and long sleeves and use of UV-blocking films on windows. Sunscreen containing avobenzone, titanium dioxide, zinc oxide or encamsule should be used daily and frequently reapplied. To guard against the UVB spectrum, zinc oxide and titanium dioxide are particularly recommended. Sunscreen is generally under-applied at only 25% of the recommended dose, seriously compromising photoprotection. Dosage guidelines recommend using more than half a teaspoon each on head and neck area and each arm, and more than a teaspoon each on anterior torso, posterior torso, and each leg (approximately 2 mg/cm(2)).
Collapse
Affiliation(s)
- Evelyn R Gonzaga
- Department of Medicine, Section of Dermatology, University of the Philippines, Philippine General Hospital, Manila, Philippines.
| |
Collapse
|
15
|
Katsuta Y, Ogura Y, Iriyama S, Goetinck PF, Klement JF, Uitto J, Amano S. Fibulin-5 accelerates elastic fibre assembly in human skin fibroblasts. Exp Dermatol 2008; 17:837-42. [DOI: 10.1111/j.1600-0625.2008.00709.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
16
|
Sercu S, Zhang L, Merregaert J. The extracellular matrix protein 1: its molecular interaction and implication in tumor progression. Cancer Invest 2008; 26:375-84. [PMID: 18443958 DOI: 10.1080/07357900701788148] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The extracellular matrix protein 1 (ECM1) is expressed around blood vessels, which suggest a role for ECM1 in angiogenesis. Recombinant ECM1 stimulates proliferation of cultured endothelial cells and promotes blood vessel formation in the chorioallantoic membrane of chicken embryos. These observations make ECM1 a possible trigger for angiogenesis, tumor progression and malignancies. Interaction of ECM1 with perlecan, MMP-9 and fibulin-1C/D contributes to this hypothesis. However, the importance of ECM1 in cancer biology has been neglected so far. Nevertheless, a survey of ECM1 expression in different tumors indicated that ECM1, although not tumor specific, is significantly elevated in many malignant epithelial tumors that give rise to metastases, emphasizing its relevance in the cancer process.
Collapse
Affiliation(s)
- S Sercu
- Laboratory of Molecular Biotechnology, Department of Biomedical Sciences, University of Antwerp, Belgium
| | | | | |
Collapse
|
17
|
Interaction of extracellular matrix protein 1 with extracellular matrix components: ECM1 is a basement membrane protein of the skin. J Invest Dermatol 2008; 128:1397-408. [PMID: 18200062 DOI: 10.1038/sj.jid.5701231] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The extracellular matrix protein 1 (ECM1) is a secreted glycoprotein, which plays an important role in the structural and functional biology of the skin as demonstrated by the identification of loss-of-function mutations in ECM1 as cause of the genodermatosis lipoid proteinosis, characterized by reduplication of the skin basement membrane and hyalinization of the underlying dermis. To search for binding partner(s) of ECM1, we tested the in vitro binding activity of ECM1a, a major isoform of four ECM1 splice variants, to different skin extracellular matrix proteins (such as laminin 332, collagen type IV, and fibronectin) and polysaccharides (such as hyaluronan, heparin, and chondroitin sulfate A) with solid-phase binding assay. We demonstrated that ECM1a utilizes different regions to bind to a variety of extracellular matrix components. Ultrastructurally, ECM1 is a basement membrane protein in human skin and is part of network-like suprastructures containing perlecan, collagen type IV, and laminin 332 as constituents. Furthermore, ECM1a enhanced the binding of collagen IV to laminin 332 dose-dependently, showing its involvement in the dermal-epidermal junction and interstitial dermis and making the functional link to the pathophysiology of lipoid proteinosis. To our knowledge, this is previously unreported.
Collapse
|
18
|
Chan I, Liu L, Hamada T, Sethuraman G, McGrath JA. The molecular basis of lipoid proteinosis: mutations in extracellular matrix protein 1. Exp Dermatol 2007; 16:881-90. [PMID: 17927570 DOI: 10.1111/j.1600-0625.2007.00608.x] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Ien Chan
- Genetic Skin Disease Group, St John's Institute of Dermatology, Division of Genetics and Molecular Medicine, The Guy's, King's College and St Thomas' School of Medicine, London, UK
| | | | | | | | | |
Collapse
|
19
|
Sercu S, Poumay Y, Herphelin F, Liekens J, Beek L, Zwijsen A, Wessagowit V, Huylebroeck D, McGrath JA, Merregaert J. Functional redundancy of extracellular matrix protein 1 in epidermal differentiation. Br J Dermatol 2007; 157:771-5. [PMID: 17711528 DOI: 10.1111/j.1365-2133.2007.08114.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Extracellular matrix protein 1 (ECM1) is a secreted protein expressed in skin. Its dermatological relevance has been highlighted by the discovery of loss-of-function mutations in ECM1 in patients with lipoid proteinosis (LiP). OBJECTIVES To determine the role of ECM1 in epidermal differentiation by examining gene and protein expression of epidermal differentiation markers in individuals with LiP and histological assessment of transgenic mouse skin that overexpresses Ecm1a in basal or suprabasal epidermis. METHODS Subconfluent, confluent and postconfluent LiP and control keratinocyte cultures were analysed by Northern and Western blotting for differences in expression of differentiation markers. Expression of these markers was analysed in skin of patients with LiP by immunohistochemistry. To study effects of Ecm1 overexpression on epidermal differentiation, transgenic mice were generated under control of either a keratin 14 or an involucrin promoter. RESULTS No differential expression of the different markers analysed was observed in LiP keratinocytes compared with controls. No histological differences were found in Ecm1-overexpressing mouse skin compared with wild-type. CONCLUSIONS Absence of ECM1 does not lead to differences in epidermal differentiation. Moreover, overexpression of Ecm1a in vivo does not exert dramatic effects on epidermal structure. Collectively, these findings suggest no role of ECM1 in epidermal differentiation.
Collapse
Affiliation(s)
- S Sercu
- Labortaory of Molecular Biotechnology, Department of Biomedical Sciences, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk/Antwerp, Belgium
| | | | | | | | | | | | | | | | | | | |
Collapse
|
20
|
Ostrovsky A, Mills DM, Farber M, Meyer DR. Nasolacrimal duct obstruction with Urbach-Wiethe syndrome. Ophthalmic Plast Reconstr Surg 2007; 23:240-1. [PMID: 17519670 DOI: 10.1097/iop.0b013e3180577e98] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
An 80-year-old woman presented with signs and symptoms consistent with bilateral nasolacrimal duct obstruction. She also was noted to have multiple eyelid margin lesions. She underwent bilateral dacryocystorhinostomy with biopsy of the nasolacrimal ducts and eyelid lesions. Her tearing resolved. Histopathology of the eyelid lesions was consistent with lipoid proteinosis. Nasolacrimal duct obstruction may occur in patients with lipoid proteinosis (Urbach-Wiethe syndrome).
Collapse
|
21
|
Mirancea N, Hausser I, Metze D, Stark HJ, Boukamp P, Breitkreutz D. Junctional basement membrane anomalies of skin and mucosa in lipoid proteinosis (hyalinosis cutis et mucosae). J Dermatol Sci 2006; 45:175-85. [PMID: 17175139 DOI: 10.1016/j.jdermsci.2006.11.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2006] [Revised: 11/04/2006] [Accepted: 11/16/2006] [Indexed: 01/07/2023]
Abstract
BACKGROUND Excessive basement membrane (BM) deposition in skin and mucosa is characteristic for lipoid proteinosis (LP; hyalinosis cutis et mucosae), an inherited disease caused by extracellular matrix protein 1 (ECM1) mutations. According to ultrastructure there are striking differences between junctional and microvascular BM. OBJECTIVE Distinct analysis of the junctional zone in epidermis and oral mucosa, contrasting concentric BM arrays in the microvasculature; evaluation of impact on epithelial histogenesis and differentiation, and specifically on adhesion structures to BM (hemidesmosomes). METHODS LP-epithelia were analyzed for alterations in differentiation, BM composition and texture, and hemidesmosomal components by indirect immunofluorescence (IIF), electron microscopy (EM), and immunoelectron microscopy (ImEM). RESULTS Most striking was the irregular deposition of collagen IV and VII, BM-laminin, and laminin-5 at the junctional zone, accompanied by lamellate or punctuated structures below BM (IIF), whereas integrin alpha6beta4 and bullous pemphigoid antigen-1 and -2 (BPAG-1/-2) were regularly aligned. Also integrins alpha2beta1 and alpha3beta1 remained restricted to the epidermal basal layer, while the tissue-specific differentiation markers keratin K1/10 (mucosa, additionally K4/13) appeared delayed indicating mild hyperplasia, further confirmed by focal K6/16 expression. Ultrastructure (EM) disclosed abundance of extended basal cell protrusions and junctional aberrations like exfoliating excessive BM material. Hemidesmosomes were complete, but ImEM indicated weakened interactions between their components (BPAG-1, -2, and HD1). Confirming IIF, collagen IV and VII, and laminin-5 appeared extensively scattered, the latter two probably remaining associated. CONCLUSIONS Subtle defects in anchorage assembly, spanning the entire BM zone, apparently compromise epithelial-matrix adhesion, which may provoke (mechanical stress-induced) erroneous BM repair.
Collapse
Affiliation(s)
- Nicolae Mirancea
- German Cancer Research Center, Division Genetics of Skin Cancer, Heidelberg, Germany
| | | | | | | | | | | |
Collapse
|
22
|
Ray D, Osmundson EC, Kiyokawa H. Constitutive and UV-induced Fibronectin Degradation Is a Ubiquitination-dependent Process Controlled by β-TrCP. J Biol Chem 2006; 281:23060-5. [PMID: 16757476 DOI: 10.1074/jbc.m604311200] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Loss of fibronectin (FN) assembly in the extracellular matrix has long been recognized as a feature of cellular transformation. However, such assembly is regulated not only by FN synthesis but also by its post-translational modifications. The mechanism controlling FN protein stability has remained unclear so far. Recently it was demonstrated that FN matrix turnover occurs intracellularly at the lysosome following caveolin-1-dependent endocytosis. Although FN was reported to undergo ubiquitindependent degradation, the ubiquitin ligase responsible for FN ubiquitination is unknown. In this study, we have identified beta-TrCP as the ubiquitin ligase for lysosomal degradation of FN. We found two conserved beta-TrCP recognition motif (DSGVVYS and DSGSIVVS) in the primary amino acid sequence of human, mouse, and rat FN. Down-regulation of either beta-TrCP1 or beta-TrCP2 by small interference (siRNA) caused significant accumulation of FN. Immunolocalization studies showed intracellular accumulation of FN in beta-TrCP siRNA-treated cells without showing much alteration in its matrix association. We also observed that exposure of cells to UV irradiation effectively down-regulated FN following increased ubiquitination, which was significantly inhibited either by lysosomal inhibitor or by siRNA-mediated down-regulation of beta-TrCP. Taken together, constitutive FN degradation, as well as UV-induced degradation, is ubiquitination dependent and controlled by beta-TrCP.
Collapse
Affiliation(s)
- Dipankar Ray
- Department of Molecular Pharmacology and Biological Chemistry, Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, Illinois 60611, USA.
| | | | | |
Collapse
|
23
|
Research Snippets. J Invest Dermatol 2006. [DOI: 10.1038/sj.jid.5700217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|