101
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Brinkmann V, Ale-Agha N, Haendeler J, Ventura N. The Aryl Hydrocarbon Receptor (AhR) in the Aging Process: Another Puzzling Role for This Highly Conserved Transcription Factor. Front Physiol 2020; 10:1561. [PMID: 32009975 PMCID: PMC6971224 DOI: 10.3389/fphys.2019.01561] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Accepted: 12/11/2019] [Indexed: 12/26/2022] Open
Abstract
Aging is the most important risk factor for the development of major life-threatening diseases such as cardiovascular disorders, cancer, and neurodegenerative disorders. The aging process is characterized by the accumulation of damage to intracellular macromolecules and it is concurrently shaped by genetic, environmental and nutritional factors. These factors influence the functionality of mitochondria, which play a central role in the aging process. Mitochondrial dysfunction is one of the hallmarks of aging and is associated with increased fluxes of ROS leading to damage of mitochondrial components, impaired metabolism of fatty acids, dysregulated glucose metabolism, and damage of adjacent organelles. Interestingly, many of the environmental (e.g., pollutants and other toxicants) and nutritional (e.g., flavonoids, carotenoids) factors influencing aging and mitochondrial function also directly or indirectly affect the activity of a highly conserved transcription factor, the Aryl hydrocarbon Receptor (AhR). Therefore, it is not surprising that many studies have already indicated a role of this versatile transcription factor in the aging process. We also recently found that the AhR promotes aging phenotypes across species. In this manuscript, we systematically review the existing literature on the contradictory studies indicating either pro- or anti-aging effects of the AhR and try to reconcile the seemingly conflicting data considering a possible dependency on the animal model, tissue, as well as level of AhR expression and activation. Moreover, given the crucial role of mitochondria in the aging process, we summarize the growing body of evidence pointing toward the influence of AhR on mitochondria, which can be of potential relevance for aging.
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Affiliation(s)
- Vanessa Brinkmann
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Niloofar Ale-Agha
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Judith Haendeler
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany.,Institute of Clinical Chemistry and Laboratory Diagnostic, Medical Faculty, Heinrich Heine University of Düsseldorf, Düsseldorf, Germany
| | - Natascia Ventura
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany.,Institute of Clinical Chemistry and Laboratory Diagnostic, Medical Faculty, Heinrich Heine University of Düsseldorf, Düsseldorf, Germany
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102
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Wang L, Wang X, Bai F, Fang Y, Wang J, Gao R. The anti-skin-aging effect of oral administration of gelatin from the swim bladder of Amur sturgeon (Acipenser schrenckii). Food Funct 2020; 10:3890-3897. [PMID: 31187836 DOI: 10.1039/c9fo00661c] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Gelatin was extracted from the swim bladder of Amur sturgeon with hot water at 50 °C with acceptable yield (76.54%) and it showed type I collagen features. The degree of hydrolysis reached 70.42%, and 26.55% of collagen peptides (380.76 Da) survived, after simulating digestion, absorption and peripheral blood circulation in vitro. In situ single-pass intestinal perfusion showed that the AMW of the collagen peptides was about 1100 Da in the intestine and they were mainly absorbed in the jejunum (61.11%). A 12-month feeding experiment using rats demonstrated that gelatin improved the histological structure, increased the thickness of the dermis (18.45%) and the density of collagen fibers (22.17%), and decreased the ratio of type III to type I collagen (43.44%) of chronologically aged skin at 3.85 g per kg bw per d. Moreover, the antioxidant enzyme activities in skin were significantly enhanced, while the malondialdehyde content was reduced by 31.99%. These results provided new insights into the development of new nutraceuticals and functional foods for the anti-skin-aging effect.
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Affiliation(s)
- Lin Wang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, P. R. China.
| | - Xiaoxiao Wang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, P. R. China.
| | - Fan Bai
- Quzhou Xunlong Aquatic Products Sci-tech Development Co., Ltd., Quzhou 324000, P. R. China
| | - Yong Fang
- College of Food Science and Engineering, Nanjing University of Finance and Economics, Nanjing 210023, P. R. China
| | - Jinlin Wang
- Quzhou Xunlong Aquatic Products Sci-tech Development Co., Ltd., Quzhou 324000, P. R. China
| | - Ruichang Gao
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, P. R. China.
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103
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Lee H, Cha H, Park JH. Derivation of Cell-Engineered Nanovesicles from Human Induced Pluripotent Stem Cells and Their Protective Effect on the Senescence of Dermal Fibroblasts. Int J Mol Sci 2020; 21:E343. [PMID: 31948013 PMCID: PMC6981782 DOI: 10.3390/ijms21010343] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 12/20/2019] [Accepted: 01/02/2020] [Indexed: 12/29/2022] Open
Abstract
Stem cells secrete numerous paracrine factors, such as cytokines, growth factors, and extracellular vesicles. As a kind of extracellular vesicle (EV), exosomes produced in the endosomal compartment of eukaryotic cells have recently emerged as a biomedical material for regenerative medicine, because they contain many valuable contents that are derived from the host cells, and can stably deliver those contents to other recipient cells. Although we have previously demonstrated the beneficial effects of human induced potent stem cell-derived exosomes (iPSC-Exo) on the aging of skin fibroblasts, low production yield has remained an obstacle for clinical applications. In this study, we generated cell-engineered nanovesicles (CENVs) by serial extrusion of human iPSCs through membrane filters with diminishing pore sizes, and explored whether the iPSC-CENV ameliorates physiological alterations of human dermal fibroblasts (HDFs) that occur by natural senescence. The iPSC-CENV exhibited similar characteristics to the iPSC-Exo, while the production yield was drastically increased compared to that of iPSC-derived EVs, including exosomes. The proliferation and migration of both young and senescent HDFs were stimulated by the treatment with iPSC-CENVs. In addition, it was revealed that the iPSC-CNEV restored senescence-related alterations of gene expression. Treatment with iPSC-CENVs significantly reduced the activity of senescence-associated-β-galactosidase (SA-β-Gal) in senescent HDFs, as well as suppressing the elevated expression of p53 and p21, key factors involved in cell cycle arrest, apoptosis, and cellular senescence signaling pathways. Taken together, these results suggest that iPSC-CENV could provide an excellent alternative to iPSC-exo, and be exploited as a resource for the treatment of signs of skin aging.
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Affiliation(s)
| | | | - Ju Hyun Park
- Department of Medical Biomaterials Engineering, Kangwon National University, 1 Kangwondaehak-gil, Chuncheon-si, Gangwon-do 24341, Korea; (H.L.); (H.C.)
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104
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Todorova K, Mandinova A. Novel approaches for managing aged skin and nonmelanoma skin cancer. Adv Drug Deliv Rev 2020; 153:18-27. [PMID: 32526451 DOI: 10.1016/j.addr.2020.06.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 05/30/2020] [Accepted: 06/04/2020] [Indexed: 12/29/2022]
Abstract
The process of aging influences every bodily organ and tissue, and those with rapid epithelial cell turnover, are particularly affected. The most visible of these, however, is the skin (including the epidermis), the largest human organ that provides a barrier to external insults, structure to the body and its movements, facilitates thermoregulation, harbors immune cells, and incorporates sensory neurons (including mechanoreceptors, nociceptors, and thermoreceptors). Skin aging has traditionally been categorized into intrinsic and extrinsic, with the latter nearly exclusively restricted to "photoaging," (i.e., aging due to exposure to solar or artificial ultraviolet radiation). However, both intrinsic and extrinsic aging share similar causes, including oxidative damage, telomere shortening, and mitochondrial senescence. Also, like other malignancies, the risk of malignant and nonmalignant lesions increases with age. Herein, we review the most recent findings in skin aging and nonmelanoma skin cancer, including addition to traditional and developing therapies.
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105
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Badi I. The curious case of dermal fibroblasts: cell identity loss may be a mechanism underlying cardiovascular aging. Cardiovasc Res 2019; 115:e24-e25. [PMID: 30753353 PMCID: PMC6383055 DOI: 10.1093/cvr/cvz012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Affiliation(s)
- Ileana Badi
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Level 6 West Wing, Headley Way, Oxford, UK
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106
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Gruber F, Kremslehner C, Eckhart L, Tschachler E. Cell aging and cellular senescence in skin aging - Recent advances in fibroblast and keratinocyte biology. Exp Gerontol 2019; 130:110780. [PMID: 31794850 DOI: 10.1016/j.exger.2019.110780] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 11/07/2019] [Accepted: 11/10/2019] [Indexed: 12/17/2022]
Abstract
The aging of the skin is the most visible and obvious manifestation of organismal aging and may serve as a predictor of life expectancy and health. It is, however, also the human desire for long-lasting beauty that further raises interests in the topic, and thus considerable means and efforts are put into studying the mechanisms of skin aging in basic and applied research. Both medical und non-medical interests are of benefit for skin research in general because the results from these studies help to deepen our understanding of the complex molecular, biological, cell signaling, developmental and immunological processes in this organ. In fact, the skin is an ideal organ to observe and analyze the impact of extrinsic and intrinsic drivers of aging. Within the past five years technological advances like lineage tracing of cells in model organisms, intra-vital microscopy, nucleic acid sequencing at the single cell level, and high resolution mass spectrometry have allowed to study aging and senescence of individual skin cells within the tissue context, their signaling and communication, and to derive new hypotheses for experimental studies in vitro. In this short review we will discuss very recent developments that promise to extend the existing knowledge on cell aging and senescence of dermal fibroblasts and epidermal keratinocytes in skin aging.
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Affiliation(s)
- Florian Gruber
- Division for Biology and Pathobiology of the Skin, Department of Dermatology, Medical University of Vienna, Vienna, Austria; Christian Doppler Laboratory for the Biotechnology of Skin Aging, Vienna, Austria.
| | - Christopher Kremslehner
- Division for Biology and Pathobiology of the Skin, Department of Dermatology, Medical University of Vienna, Vienna, Austria; Christian Doppler Laboratory for the Biotechnology of Skin Aging, Vienna, Austria
| | - Leopold Eckhart
- Division for Biology and Pathobiology of the Skin, Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Erwin Tschachler
- Division for Biology and Pathobiology of the Skin, Department of Dermatology, Medical University of Vienna, Vienna, Austria
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107
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The Hyaluronidase, TMEM2, Promotes ER Homeostasis and Longevity Independent of the UPR ER. Cell 2019; 179:1306-1318.e18. [PMID: 31761535 DOI: 10.1016/j.cell.2019.10.018] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 07/31/2019] [Accepted: 10/18/2019] [Indexed: 12/16/2022]
Abstract
Cells have evolved complex mechanisms to maintain protein homeostasis, such as the UPRER, which are strongly associated with several diseases and the aging process. We performed a whole-genome CRISPR-based knockout (KO) screen to identify genes important for cells to survive ER-based protein misfolding stress. We identified the cell-surface hyaluronidase (HAase), Transmembrane Protein 2 (TMEM2), as a potent modulator of ER stress resistance. The breakdown of the glycosaminoglycan, hyaluronan (HA), by TMEM2 within the extracellular matrix (ECM) altered ER stress resistance independent of canonical UPRER pathways but dependent upon the cell-surface receptor, CD44, a putative HA receptor, and the MAPK cell-signaling components, ERK and p38. Last, and most surprisingly, ectopic expression of human TMEM2 in C. elegans protected animals from ER stress and increased both longevity and pathogen resistance independent of canonical UPRER activation but dependent on the ERK ortholog mpk-1 and the p38 ortholog pmk-1.
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108
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Galvis D, Walsh D, Harries LW, Latorre E, Rankin J. A dynamical systems model for the measurement of cellular senescence. J R Soc Interface 2019; 16:20190311. [PMID: 31594522 PMCID: PMC6833332 DOI: 10.1098/rsif.2019.0311] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Senescent cells provide a good in vitro model to study ageing. However, cultures of ‘senescent’ cells consist of a mix of cell subtypes (proliferative, senescent, growth-arrested and apoptotic). Determining the proportion of senescent cells is crucial for studying ageing and developing new anti-degenerative therapies. Commonly used markers such as doubling population, senescence-associated β-galactosidase, Ki-67, γH2AX and TUNEL assays capture diverse and overlapping cellular populations and are not purely specific to senescence. A newly developed dynamical systems model follows the transition of an initial culture to senescence tracking population doubling, and the proportion of cells in proliferating, growth-arrested, apoptotic and senescent states. Our model provides a parsimonious description of transitions between these states accruing towards a predominantly senescent population. Using a genetic algorithm, these model parameters are well constrained by an in vitro human primary fibroblast dataset recording five markers at 16 time points. The computational model accurately fits to the data and translates these joint markers into the first complete description of the proportion of cells in different states over the lifetime. The high temporal resolution of the dataset demonstrates the efficacy of strategies for reconstructing the trajectory towards replicative senescence with a minimal number of experimental recordings.
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Affiliation(s)
- Daniel Galvis
- Living Systems Institute, University of Exeter, Exeter, UK.,Translational Research Exchange at Exeter, University of Exeter, Exeter, UK
| | - Darren Walsh
- Institute of Biomedical and Clinical Science, University of Exeter, Medical School, RILD Building, Barrack Road, Exeter EX2 5DW, UK
| | - Lorna W Harries
- Institute of Biomedical and Clinical Science, University of Exeter, Medical School, RILD Building, Barrack Road, Exeter EX2 5DW, UK
| | - Eva Latorre
- Institute of Biomedical and Clinical Science, University of Exeter, Medical School, RILD Building, Barrack Road, Exeter EX2 5DW, UK.,Department of Biochemistry and Molecular and Cell Biology, University of Zaragoza, Zaragoza, Spain
| | - James Rankin
- Department of Mathematics, College of Engineering, Mathematics and Physical Sciences, University of Exeter, Harrison Building, North Park Road, Exeter EX4 4QF, UK.,EPSRC Centre for Predictive Modelling in Healthcare, University of Exeter, Exeter EX4 4QJ, UK
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109
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Do senescence markers correlate in vitro and in situ within individual human donors? Aging (Albany NY) 2019; 10:278-289. [PMID: 29500330 PMCID: PMC5842854 DOI: 10.18632/aging.101389] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2016] [Accepted: 02/23/2018] [Indexed: 12/18/2022]
Abstract
Little is known on how well senescence markers in vitro and in situ correlate within individual donors. We studied correlations between the same and different in vitro markers. Furthermore, we tested correlations between in vitro markers with in situ p16INK4a positivity. From 100 donors (20-91 years), cultured dermal fibroblasts were assessed for reactive oxygen species (ROS), telomere-associated foci (TAF), p16INK4a and senescence-associated β-gal (SAβ-gal), with/ without 0.6 µM rotenone for 3 days (short-term). In fibroblasts from 40 donors, telomere shortening, ROS and SAβ-gal were additionally assessed, with/ without 20 nM rotenone for 7 weeks (long-term). In skin from 52 donors, the number of p16INK4a positive dermal cells was assessed in situ. More than half of the correlations of the same senescence markers in vitro between duplicate experiments and between short-term versus long-term experiments were significant. Half of the different senescence marker correlations were significant within the short-term and within the long-term experiments. The different senescence markers in vitro were not significantly correlated intra-individually with in situ p16INK4a positivity.
In conclusion, the same and different senescence markers are frequently correlated significantly within and between in vitro experiments, but in vitro senescence markers are not correlated with p16INK4a positivity in situ.
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110
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Effects of Lycium barbarum Polysaccharides on Health and Aging of C. elegans Depend on daf-12/daf-16. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:6379493. [PMID: 31583041 PMCID: PMC6754959 DOI: 10.1155/2019/6379493] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 07/04/2019] [Accepted: 08/07/2019] [Indexed: 11/17/2022]
Abstract
As the global population ages, searching for drugs and functional foods which can slow down the aging process has attracted a number of researchers. In this paper, the Lycium barbarum polysaccharides (LBP) extracted from Lycium barbarum was characterized and the effects of LBP on the aging and health of C. elegans were studied. Results showed that LBP can prolong the lifespan, improve the abilities to withstand environmental stress, enhance reproductive potentials, and maintain muscle integrity of C. elegans. By using genetically mutated C. elegans strains, RNAi gene silencing, and measuring the mRNA expression level, it was demonstrated that the lifespan of C. elegans was extended by LBP mainly through sir-2.1, daf-12, and daf-16. The present study might provide a basis for further study of LBP as a food or drug to interfere with aging and reduce the incidence of age-related diseases.
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111
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Eckhart L, Tschachler E, Gruber F. Autophagic Control of Skin Aging. Front Cell Dev Biol 2019; 7:143. [PMID: 31417903 PMCID: PMC6682604 DOI: 10.3389/fcell.2019.00143] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 07/11/2019] [Indexed: 12/13/2022] Open
Abstract
The skin forms the barrier to the environment. Maintenance of this barrier during aging requires orchestrated responses to variable types of stress, the continuous renewal of the epithelial compartment, and the homeostasis of long-lived cell types. Recent experimental evidence suggests that autophagy is critically involved in skin homeostasis and skin aging is associated with and partially caused by defects of autophagy. In the outer skin epithelium, autophagy is constitutively active during cornification of keratinocytes and increases the resistance to environmental stress. Experimental suppression of autophagy in the absence of stress is tolerated by the rapidly renewing epidermal epithelium, whereas long-lived skin cells such as melanocytes, Merkel cells and secretory cells of sweat glands depend on autophagy for cellular homeostasis and normal execution of their functions during aging. Yet other important roles of autophagy have been identified in the dermis where senescence of mesenchymal cells and alterations of the extracellular matrix (ECM) are hallmarks of aging. Here, we review the evidence for cell type-specific roles of autophagy in the skin and their differential contributions to aging.
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Affiliation(s)
- Leopold Eckhart
- Research Division of Biology and Pathobiology of the Skin, Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Erwin Tschachler
- Research Division of Biology and Pathobiology of the Skin, Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Florian Gruber
- Research Division of Biology and Pathobiology of the Skin, Department of Dermatology, Medical University of Vienna, Vienna, Austria.,Christian Doppler Laboratory for Biotechnology of Skin Aging, Vienna, Austria
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112
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Mohis M, Edwards S, Ryan S, Rizvi F, Tajik AJ, Jahangir A, Ross GR. Aging-related increase in store-operated Ca 2+ influx in human ventricular fibroblasts. Am J Physiol Heart Circ Physiol 2019; 315:H83-H91. [PMID: 29985070 DOI: 10.1152/ajpheart.00588.2017] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Senescence-related fibrosis contributes to cardiac dysfunction. Profibrotic processes are Ca2+ dependent. The effect of aging on the Ca2+ mobilization processes of human ventricular fibroblasts (hVFs) is unclear. Therefore, we tested whether aging altered intracellular Ca2+ release and store-operated Ca2+ entry (SOCE). Disease-free hVFs from 2- to 63-yr-old trauma victims were assessed for cytosolic Ca2+ dynamics with fluo 3/confocal imaging. Angiotensin II or thapsigargin was used to release endoplasmic reticulum Ca2+ in Ca2+-free solution; CaCl2 (2 mM) was then added to assess SOCE, which was normalized to ionomycin-induced maximal Ca2+. The angiotensin II experiments were repeated after phosphoenolpyruvate pretreatment to determine the role of energy status. The expression of genes encoding SOCE-related ion channel subunits was assessed by quantitative PCR, and protein expression was assessed by immunoblot analysis. Age groups of <50 and ≥50 yr were compared using unpaired t-test or regression analysis. Ca2+ release by angiotensin II or thapsigargin was not different between the groups, but SOCE was significantly elevated in the ≥50-yr group. Regression analysis showed an age-dependent phosphoenolpyruvate-sensitive increase in SOCE of hVFs. Aging did not alter the mRNA expression of SOCE-related genes. The profibrotic phenotype of hVFs was evident by sprouty1 downregulation with age. Thus, an age-associated increase in angiotensin II- and thapsigargin-induced SOCE occurs in hVFs, independent of receptor mechanisms or alterations of mRNA expression level of SOCE-related ion channel subunits but related to the cellular bioenergetics status. Elucidation of mechanisms underlying enhanced hVF SOCE with aging may refine SOCE targets to limit aging-related progression of Ca2+-dependent cardiac fibrosis. NEW & NOTEWORTHY Human ventricular fibroblasts exhibit an age-related increase in store-operated Ca2+ influx induced by angiotensin II, an endogenous vasoactive hormone, or thapsigargin, an inhibitor of endoplasmic reticulum Ca2+-ATPase, independent of receptor mechanisms or genes encoding store-operated Ca2+ entry-related ion channel subunits. Selective inhibition of this augmented store-operated Ca2+ entry could therapeutically limit aging-related cardiac fibrosis.
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Affiliation(s)
- Momin Mohis
- Center for Integrative Research on Cardiovascular Aging, Aurora Research Institute, Aurora Health Care, Milwaukee, Wisconsin
| | - Stacie Edwards
- Center for Integrative Research on Cardiovascular Aging, Aurora Research Institute, Aurora Health Care, Milwaukee, Wisconsin
| | - Sean Ryan
- Center for Integrative Research on Cardiovascular Aging, Aurora Research Institute, Aurora Health Care, Milwaukee, Wisconsin
| | - Farhan Rizvi
- Center for Integrative Research on Cardiovascular Aging, Aurora Research Institute, Aurora Health Care, Milwaukee, Wisconsin
| | - A Jamil Tajik
- Center for Integrative Research on Cardiovascular Aging, Aurora Research Institute, Aurora Health Care, Milwaukee, Wisconsin.,Aurora Cardiovascular Services, Aurora Sinai/Aurora St. Luke's Medical Centers , Milwaukee, Wisconsin
| | - Arshad Jahangir
- Center for Integrative Research on Cardiovascular Aging, Aurora Research Institute, Aurora Health Care, Milwaukee, Wisconsin.,Aurora Cardiovascular Services, Aurora Sinai/Aurora St. Luke's Medical Centers , Milwaukee, Wisconsin
| | - Gracious R Ross
- Center for Integrative Research on Cardiovascular Aging, Aurora Research Institute, Aurora Health Care, Milwaukee, Wisconsin
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113
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Sturm G, Cardenas A, Bind MA, Horvath S, Wang S, Wang Y, Hägg S, Hirano M, Picard M. Human aging DNA methylation signatures are conserved but accelerated in cultured fibroblasts. Epigenetics 2019; 14:961-976. [PMID: 31156022 DOI: 10.1080/15592294.2019.1626651] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Aging is associated with progressive and site-specific changes in DNA methylation (DNAm). These global changes are captured by DNAm clocks that accurately predict chronological age in humans but relatively little is known about how clocks perform in vitro. Here we culture primary human fibroblasts across the cellular lifespan (~6 months) and use four different DNAm clocks to show that age-related DNAm signatures are conserved and accelerated in vitro. The Skin & Blood clock shows the best linear correlation with chronological time (r = 0.90), including during replicative senescence. Although similar in nature, the rate of epigenetic aging is approximately 62x times faster in cultured cells than in the human body. Consistent with in vivo data, cells aged under hyperglycemic conditions exhibit an approximately three years elevation in baseline DNAm age. Moreover, candidate gene-based analyses further corroborate the conserved but accelerated biological aging process in cultured fibroblasts. Fibroblasts mirror the established DNAm topology of the age-related ELOVL2 gene in human blood and the rapid hypermethylation of its promoter cg16867657, which correlates with a linear decrease in ELOVL2 mRNA levels across the lifespan. Using generalized additive modeling on twelve timepoints across the lifespan, we also show how single CpGs exhibit loci-specific, linear and nonlinear trajectories that reach rates up to -47% (hypomethylation) to +23% (hypermethylation) per month. Together, these high-temporal resolution global, gene-specific, and single CpG data highlight the conserved and accelerated nature of epigenetic aging in cultured fibroblasts, which may constitute a system to evaluate age-modifying interventions across the lifespan.
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Affiliation(s)
- Gabriel Sturm
- a Department of Psychiatry, Division of Behavioral Medicine, Columbia University Irving Medical Center , New York , NY , USA
| | - Andres Cardenas
- b Division of Environmental Health Sciences, University of California, Berkeley, School of Public Health , Berkeley , CA , USA
| | - Marie-Abèle Bind
- c Department of Statistics, Harvard University , Cambridge , MA , USA
| | - Steve Horvath
- d Human Genetics, David Geffen School of Medicine, University of California Los Angeles , Los Angeles , CA , USA
| | - Shuang Wang
- e Department of Biostatistics, Mailman School of Public Health, Columbia University Medical Center , New York , NY , USA
| | - Yunzhang Wang
- f Department of Medical Epidemiology and Biostatistics, Karolinska Institutet , Stockholm , Sweden
| | - Sara Hägg
- f Department of Medical Epidemiology and Biostatistics, Karolinska Institutet , Stockholm , Sweden
| | - Michio Hirano
- g Department of Neurology, H. Houston Merritt Center, Columbia Translational Neuroscience Initiative, Columbia University Irving Medical Center , New York , NY , USA
| | - Martin Picard
- a Department of Psychiatry, Division of Behavioral Medicine, Columbia University Irving Medical Center , New York , NY , USA.,g Department of Neurology, H. Houston Merritt Center, Columbia Translational Neuroscience Initiative, Columbia University Irving Medical Center , New York , NY , USA.,h Columbia Aging Center, Columbia University Mailman School of Public Health , New York , NY , USA
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114
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Neuroendocrine Aspects of Skin Aging. Int J Mol Sci 2019; 20:ijms20112798. [PMID: 31181682 PMCID: PMC6600459 DOI: 10.3390/ijms20112798] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 05/28/2019] [Accepted: 06/06/2019] [Indexed: 12/21/2022] Open
Abstract
Skin aging is accompanied by a gradual loss of function, physiological integrity and the ability to cope with internal and external stressors. This is secondary to a combination of complex biological processes influenced by constitutive and environmental factors or by local and systemic pathologies. Skin aging and its phenotypic presentation are dependent on constitutive (genetic) and systemic factors. It can be accelerated by environmental stressors, such as ultraviolet radiation, pollutants and microbial insults. The skin’s functions and its abilities to cope with external stressors are regulated by the cutaneous neuroendocrine systems encompassing the regulated and coordinated production of neuropeptides, neurohormones, neurotransmitters and hormones, including steroids and secosteroids. These will induce/stimulate downstream signaling through activation of corresponding receptors. These pathways and corresponding coordinated responses to the stressors decay with age or undergo pathological malfunctions. This affects the overall skin phenotype and epidermal, dermal, hypodermal and adnexal functions. We propose that skin aging can be attenuated or its phenotypic presentation reversed by the topical use of selected factors with local neurohormonal activities targeting specific receptors or enzymes. Some of our favorite factors include melatonin and its metabolites, noncalcemic secosteroids and lumisterol derivatives, because of their low toxicity and their desirable local phenotypic effects.
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115
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Hyaluronan as tunable drug delivery system. Adv Drug Deliv Rev 2019; 146:83-96. [PMID: 31421148 DOI: 10.1016/j.addr.2019.08.006] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 08/08/2019] [Accepted: 08/12/2019] [Indexed: 12/15/2022]
Abstract
The hyaluronan (HA) polymer is an important macromolecule of extracellular matrix with remarkable structure and functions: it is a linear and unbranched polymer without sulphate or phosphate groups and has key role in several biological processes in mammals. It is ubiquitous in mammalian tissues with several and specific functions, influencing cell proliferation and migration as well as angiogenesis and inflammation. To exert these important functions in tissues HA modifies the concentration and size. Considering this HA content in tissues is carefully controlled by different mechanisms including covalent modification of the synthetic enzymes and epigenetic control of their gene expression. The function of HA is also critical in several pathologies including cancer, diabetes and chronic inflammation. Among these biological roles, the structural properties of HA allow to use this polymer in regenerative medicine including cosmetics and drug delivery. HA takes advantage from its capacity to form gels even at concentration of 1% producing scaffolds with very intriguing mechanical properties. These hydrogels are useful in regenerative medicine as biocompatible material for advanced therapeutic uses. In this review we highlight the biological aspects of HA addressing the mechanisms controlling the HA content in tissues and its role as drug delivery system.
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116
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Despres J, Ramdani Y, di Giovanni M, Bénard M, Zahid A, Montero-Hadjadje M, Yvergnaux F, Saguet T, Driouich A, Follet-Gueye ML. Replicative senescence of human dermal fibroblasts affects structural and functional aspects of the Golgi apparatus. Exp Dermatol 2019; 28:922-932. [DOI: 10.1111/exd.13886] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 12/14/2018] [Accepted: 01/02/2019] [Indexed: 01/02/2023]
Affiliation(s)
- Julie Despres
- Laboratoire Glycobiologie et Matrice Extracellulaire Végétale; Normandie Université; UNIROUEN, Fédération de recherche Normandie-Végétal - FED 4277, GDR CNRS 3711, COSM'ACTIFS; Mont-Saint-Aignan France
- Bioeurope; Groupe SOLABIA; Route d'OulinsAnet France
| | - Yasmina Ramdani
- Laboratoire Glycobiologie et Matrice Extracellulaire Végétale; Normandie Université; UNIROUEN, Fédération de recherche Normandie-Végétal - FED 4277, GDR CNRS 3711, COSM'ACTIFS; Mont-Saint-Aignan France
| | - Marine di Giovanni
- Cell Imaging Platform (PRIMACEN-IRIB); Normandie Université; UNIROUEN; Mont-Saint-Aignan France
| | - Magalie Bénard
- Cell Imaging Platform (PRIMACEN-IRIB); Normandie Université; UNIROUEN; Mont-Saint-Aignan France
| | - Abderrakib Zahid
- Laboratoire Glycobiologie et Matrice Extracellulaire Végétale; Normandie Université; UNIROUEN, Fédération de recherche Normandie-Végétal - FED 4277, GDR CNRS 3711, COSM'ACTIFS; Mont-Saint-Aignan France
| | - Maité Montero-Hadjadje
- Laboratoire de Différenciation et Communication Neuronale et Neuroendocrine; Institut de Recherche et d'Innovation Biomédicale de Normandie; Normandie Univ; UNIROUEN; INSERM U1239; Rouen France
| | | | | | - Azeddine Driouich
- Laboratoire Glycobiologie et Matrice Extracellulaire Végétale; Normandie Université; UNIROUEN, Fédération de recherche Normandie-Végétal - FED 4277, GDR CNRS 3711, COSM'ACTIFS; Mont-Saint-Aignan France
- Cell Imaging Platform (PRIMACEN-IRIB); Normandie Université; UNIROUEN; Mont-Saint-Aignan France
| | - Marie-Laure Follet-Gueye
- Laboratoire Glycobiologie et Matrice Extracellulaire Végétale; Normandie Université; UNIROUEN, Fédération de recherche Normandie-Végétal - FED 4277, GDR CNRS 3711, COSM'ACTIFS; Mont-Saint-Aignan France
- Cell Imaging Platform (PRIMACEN-IRIB); Normandie Université; UNIROUEN; Mont-Saint-Aignan France
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Abstract
In recent years, stem cell therapy has become a very promising and advanced scientific research topic. The development of treatment methods has evoked great expectations. This paper is a review focused on the discovery of different stem cells and the potential therapies based on these cells. The genesis of stem cells is followed by laboratory steps of controlled stem cell culturing and derivation. Quality control and teratoma formation assays are important procedures in assessing the properties of the stem cells tested. Derivation methods and the utilization of culturing media are crucial to set proper environmental conditions for controlled differentiation. Among many types of stem tissue applications, the use of graphene scaffolds and the potential of extracellular vesicle-based therapies require attention due to their versatility. The review is summarized by challenges that stem cell therapy must overcome to be accepted worldwide. A wide variety of possibilities makes this cutting edge therapy a turning point in modern medicine, providing hope for untreatable diseases.
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Affiliation(s)
- Wojciech Zakrzewski
- Department of Experimental Surgery and Biomaterials Research, Wroclaw Medical University, Bujwida 44, Wrocław, 50-345 Poland
| | - Maciej Dobrzyński
- Department of Conservative Dentistry and Pedodontics, Krakowska 26, Wrocław, 50-425 Poland
| | - Maria Szymonowicz
- Department of Experimental Surgery and Biomaterials Research, Wroclaw Medical University, Bujwida 44, Wrocław, 50-345 Poland
| | - Zbigniew Rybak
- Department of Experimental Surgery and Biomaterials Research, Wroclaw Medical University, Bujwida 44, Wrocław, 50-345 Poland
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The Growth Differentiation Factor 11 is Involved in Skin Fibroblast Ageing and is Induced by a Preparation of Peptides and Sugars Derived from Plant Cell Cultures. Mol Biotechnol 2019; 61:209-220. [DOI: 10.1007/s12033-019-00154-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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119
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Dihydrocaffeic Acid Prevents UVB-Induced Oxidative Stress Leading to the Inhibition of Apoptosis and MMP-1 Expression via p38 Signaling Pathway. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:2419096. [PMID: 30800206 PMCID: PMC6360051 DOI: 10.1155/2019/2419096] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 10/13/2018] [Accepted: 11/18/2018] [Indexed: 01/18/2023]
Abstract
Chronic UVB exposure promotes oxidative stress, directly causes molecular damage, and induces aging-related signal transduction, leading to skin photoaging. Dihydrocaffeic acid (DHCA) is a phenolic compound with potential antioxidant capacity and is thus a promising compound for the prevention of UVB-induced skin photodamage. The aim of this study was to evaluate the antioxidant and protective effect of DHCA against oxidative stress, apoptosis, and matrix metalloproteinase (MMP) expression via the mitogen-activated protein kinase (MAPK) signaling pathway on L929 fibroblasts irradiated with UVB. DHCA exhibited high antioxidant capacity on 2,2-diphenyl-1-picrylhydrazyl (DPPH•), 2,2-azinobis-3-ethylbenzothiazoline-6-sulphonic acid (ABTS•+), and xanthine/luminol/xanthine oxidase (XOD) assays and reduced UVB-induced cell death in the neutral red assay. DHCA also modulated oxidative stress by decreasing intracellular reactive oxygen species (ROS) and extracellular hydrogen peroxide (H2O2) production, enhancing catalase (CAT) and superoxide dismutase (SOD) activities and reduced glutathione (GSH) levels. Hence, cellular damage was attenuated by DHCA, including lipid peroxidation, apoptosis/necrosis and its markers (loss of mitochondria membrane potential, DNA condensation, and cleaved caspase 9 expression), and MMP-1 expression. Furthermore, DHCA reduced the phosphorylation of MAPK p38. These findings suggest that DHCA can be used in the development of skin care products to prevent UVB-induced skin damage.
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120
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Hao D, Wen X, Liu L, Wang L, Zhou X, Li Y, Zeng X, He G, Jiang X. Sanshool improves UVB-induced skin photodamage by targeting JAK2/STAT3-dependent autophagy. Cell Death Dis 2019; 10:19. [PMID: 30622245 PMCID: PMC6325150 DOI: 10.1038/s41419-018-1261-y] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 11/27/2018] [Accepted: 12/03/2018] [Indexed: 02/05/2023]
Abstract
Ultraviolet radiation is markedly increased because of pollution and the depletion of the stratospheric ozone layer. Excessive exposure to sunlight can negatively affect the skin, resulting in sunburn, photo-aging, or skin cancer. In this study, we first determined the photoprotective effect of sanshool, a major component in Zanthoxylum bungeanum, on UVB-irradiated responses in human dermal fibroblasts (HDFs) and nude mouse. We found that sanshool treatment can protect cells against the effects of UVB irradiation by (i) increasing cell viability, (ii) inhibiting MMP expression, and (iii) inducing autophagy. We also used the recombinant CSF2 or anti-CSF2 antibody co-cultured with human dermal fibroblasts (HDFs) and found that CSF2 contributes to sanshool-induced autophagy. Sanshool hindered the UVB-induced activation of JAK2-STAT3 signaling in HDFs, thereby inhibiting the expression of MMPs and activation of autophagic flux. Exposure of the dorsal skin of hairless mice to UVB radiation and subsequent topical application of sanshool delayed the progression of skin inflammation, leading to autophagy and inhibiting the activation of JAK2-STAT3 signaling. These results provide a basis for the study of the photoprotective effect of sanshool and suggest that it can be potentially used as an agent against UVB-induced skin damage in humans.
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Affiliation(s)
- Dan Hao
- Department of Dermatology and Venereology and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, P.R. China
| | - Xiang Wen
- Department of Dermatology and Venereology and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, P.R. China
| | - Lian Liu
- Department of Dermatology and Venereology and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, P.R. China
| | - Lian Wang
- Department of Dermatology and Venereology and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, P.R. China
| | - Xianli Zhou
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, P.R. China.
| | - Yanmei Li
- Department of Dermatology and Venereology and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, P.R. China
| | - Xin Zeng
- Department of Dermatology and Venereology and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, P.R. China
| | - Gu He
- Department of Dermatology and Venereology and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, P.R. China.
| | - Xian Jiang
- Department of Dermatology and Venereology and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, P.R. China.
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Hyaluronan: Structure, Metabolism, and Biological Properties. BIOLOGICALLY-INSPIRED SYSTEMS 2019. [DOI: 10.1007/978-3-030-12919-4_4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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122
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Fleischer JG, Schulte R, Tsai HH, Tyagi S, Ibarra A, Shokhirev MN, Huang L, Hetzer MW, Navlakha S. Predicting age from the transcriptome of human dermal fibroblasts. Genome Biol 2018; 19:221. [PMID: 30567591 PMCID: PMC6300908 DOI: 10.1186/s13059-018-1599-6] [Citation(s) in RCA: 112] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 11/29/2018] [Indexed: 12/03/2022] Open
Abstract
Biomarkers of aging can be used to assess the health of individuals and to study aging and age-related diseases. We generate a large dataset of genome-wide RNA-seq profiles of human dermal fibroblasts from 133 people aged 1 to 94 years old to test whether signatures of aging are encoded within the transcriptome. We develop an ensemble machine learning method that predicts age to a median error of 4 years, outperforming previous methods used to predict age. The ensemble was further validated by testing it on ten progeria patients, and our method is the only one that predicts accelerated aging in these patients.
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Affiliation(s)
- Jason G Fleischer
- Integrative Biology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA, 92037, USA
| | - Roberta Schulte
- Molecular and Cell Biology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA, 92037, USA
| | - Hsiao H Tsai
- Molecular and Cell Biology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA, 92037, USA
| | - Swati Tyagi
- Molecular and Cell Biology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA, 92037, USA
| | | | - Maxim N Shokhirev
- Bioinformatics Core, The Salk Institute for Biological Studies, La Jolla, CA, 92037, USA
| | - Ling Huang
- Bioinformatics Core, The Salk Institute for Biological Studies, La Jolla, CA, 92037, USA
| | - Martin W Hetzer
- Molecular and Cell Biology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA, 92037, USA.
| | - Saket Navlakha
- Integrative Biology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA, 92037, USA.
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123
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Epigenetic Regulation of Skin Cells in Natural Aging and Premature Aging Diseases. Cells 2018; 7:cells7120268. [PMID: 30545089 PMCID: PMC6315602 DOI: 10.3390/cells7120268] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 12/07/2018] [Accepted: 12/11/2018] [Indexed: 02/06/2023] Open
Abstract
Skin undergoes continuous renewal throughout an individual’s lifetime relying on stem cell functionality. However, a decline of the skin regenerative potential occurs with age. The accumulation of senescent cells over time probably reduces tissue regeneration and contributes to skin aging. Keratinocytes and dermal fibroblasts undergo senescence in response to several intrinsic or extrinsic stresses, including telomere shortening, overproduction of reactive oxygen species, diet, and sunlight exposure. Epigenetic mechanisms directly regulate skin homeostasis and regeneration, but they also mark cell senescence and the natural and pathological aging processes. Progeroid syndromes represent a group of clinical and genetically heterogeneous pathologies characterized by the accelerated aging of various tissues and organs, including skin. Skin cells from progeroid patients display molecular hallmarks that mimic those associated with naturally occurring aging. Thus, investigations on progeroid syndromes strongly contribute to disclose the causal mechanisms that underlie the aging process. In the present review, we discuss the role of epigenetic pathways in skin cell regulation during physiologic and premature aging.
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124
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Yoon JE, Kim Y, Kwon S, Kim M, Kim YH, Kim JH, Park TJ, Kang HY. Senescent fibroblasts drive ageing pigmentation: A potential therapeutic target for senile lentigo. Am J Cancer Res 2018; 8:4620-4632. [PMID: 30279727 PMCID: PMC6160768 DOI: 10.7150/thno.26975] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 08/16/2018] [Indexed: 12/12/2022] Open
Abstract
Cutaneous ageing is an important extrinsic process that modifies the pigmentary system. Because cellular senescence is a fundamental ageing mechanism, we examined the role of senescent cells in ageing pigmentation. Methods: Biopsies obtained from senile lentigo and perilesional normal skin were assayed for a marker of cellular senescence, p16INK4A. To determine the secretory phenotypes of senescent fibroblasts, we performed microarray, RNA sequencing and methylation array analyses in senile lentigo and senescent fibroblasts. To further investigate the impact of senescent cells on ageing-related pigmentation, an intervention that targeted senescent cells using radiofrequency was performed. Results:In vivo, senescent fibroblasts accumulated at the sites of age-related pigmentation. Phenotype switching of the cells resulted in the repression of stromal-derived factor 1 (SDF1) by promoter methylation. SDF1 induced melanocyte differentiation via stromal-epithelial interactions, ultimately driving skin pigmentation. Furthermore, the elimination of senescent fibroblasts from pigmented skin using radiofrequency was accompanied by skin lightening, rendering it a potential target for treatment. Conclusion: Aged pigmented skin contains an increasing proportion of senescent fibroblasts. Cells with phenotype switching exhibited a loss of SDF1, which stimulates the melanogenic process and thereby contributes to aging pigmentation. These data may promote the development of new therapeutic paradigms, such as a stroma-targeting therapy for pigmentary disorders.
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125
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Lineage Identity and Location within the Dermis Determine the Function of Papillary and Reticular Fibroblasts in Human Skin. J Invest Dermatol 2018; 139:342-351. [PMID: 30179601 DOI: 10.1016/j.jid.2018.07.033] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 07/26/2018] [Accepted: 07/27/2018] [Indexed: 12/15/2022]
Abstract
Human skin dermis is composed of the superficial papillary dermis and the reticular dermis in the lower layers, which can easily be distinguished histologically. In vitro analyses of fibroblasts from explant cultures from superficial and lower dermal layers suggest that human skin comprises at least two fibroblast lineages with distinct morphology, expression profiles, and functions. However, while for mouse skin cell surface markers have been identified, allowing the isolation of pure populations of one lineage or the other via FACS, this has not been achieved for human skin fibroblasts. We have now discovered two cell surface markers that discriminate between papillary and reticular fibroblasts. While FAP+CD90- cells display increased proliferative potential, express PDPN and NTN1, and cannot be differentiated into adipocytes, FAP-CD90+ fibroblasts express high levels of ACTA2, MGP, PPARγ, and CD36 and readily undergo adipogenic differentiation, a hallmark of reticular fibroblasts. Flow cytometric analysis of fibroblasts isolated from superficial and lower layers of human dermis showed that FAP+CD90- cells are enriched in the papillary dermis. Altogether, functional analysis and expression profiling confirms that FAP+CD90- cells represent papillary fibroblasts, whereas FAP-CD90+ fibroblasts derive from the reticular lineage. Although papillary and reticular fibroblasts are enriched in the upper or lower dermis, respectively, they are not spatially restricted, and the microenvironment seems to affect their function.
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126
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Lang A, Anand R, Altinoluk-Hambüchen S, Ezzahoini H, Stefanski A, Iram A, Bergmann L, Urbach J, Böhler P, Hänsel J, Franke M, Stühler K, Krutmann J, Scheller J, Stork B, Reichert AS, Piekorz RP. SIRT4 interacts with OPA1 and regulates mitochondrial quality control and mitophagy. Aging (Albany NY) 2018; 9:2163-2189. [PMID: 29081403 PMCID: PMC5680561 DOI: 10.18632/aging.101307] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2017] [Accepted: 10/15/2017] [Indexed: 12/13/2022]
Abstract
The stress-responsive mitochondrial sirtuin SIRT4 controls cellular energy metabolism in a NAD+-dependent manner and is implicated in cellular senescence and aging. Here we reveal a novel function of SIRT4 in mitochondrial morphology/quality control and regulation of mitophagy. We report that moderate overexpression of SIRT4, but not its enzymatically inactive mutant H161Y, sensitized cells to mitochondrial stress. CCCP-triggered dissipation of the mitochondrial membrane potential resulted in increased mitochondrial ROS levels and autophagic flux, but surprisingly led to increased mitochondrial mass and decreased Parkin-regulated mitophagy. The anti-respiratory effect of elevated SIRT4 was accompanied by increased levels of the inner-membrane bound long form of the GTPase OPA1 (L-OPA1) that promotes mitochondrial fusion and thereby counteracts fission and mitophagy. Consistent with this, upregulation of endogenous SIRT4 expression in fibroblast models of senescence either by transfection with miR-15b inhibitors or by ionizing radiation increased L-OPA1 levels and mitochondrial fusion in a SIRT4-dependent manner. We further demonstrate that SIRT4 interacts physically with OPA1 in co-immunoprecipitation experiments. Overall, we propose that the SIRT4-OPA1 axis is causally linked to mitochondrial dysfunction and altered mitochondrial dynamics that translates into aging-associated decreased mitophagy based on an unbalanced mitochondrial fusion/fission cycle.
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Affiliation(s)
- Alexander Lang
- Institut für Biochemie und Molekularbiologie II, Medizinische Fakultät der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Ruchika Anand
- Institut für Biochemie und Molekularbiologie I, Medizinische Fakultät der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Simone Altinoluk-Hambüchen
- Institut für Biochemie und Molekularbiologie II, Medizinische Fakultät der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Hakima Ezzahoini
- Institut für Biochemie und Molekularbiologie II, Medizinische Fakultät der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Anja Stefanski
- Molecular Proteomics Laboratory (BMFZ), Medizinische Fakultät der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Afshin Iram
- Institut für Biochemie und Molekularbiologie II, Medizinische Fakultät der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Laura Bergmann
- Institut für Biochemie und Molekularbiologie II, Medizinische Fakultät der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Jennifer Urbach
- Institut für Biochemie und Molekularbiologie I, Medizinische Fakultät der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Philip Böhler
- Institut für Molekulare Medizin I, Medizinische Fakultät der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Jan Hänsel
- Institut für Biochemie und Molekularbiologie II, Medizinische Fakultät der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Manuel Franke
- Institut für Biochemie und Molekularbiologie II, Medizinische Fakultät der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Kai Stühler
- Molecular Proteomics Laboratory (BMFZ), Medizinische Fakultät der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Jean Krutmann
- IUF - Leibniz Institut für Umweltmedizinische Forschung, Medizinische Fakultät der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Jürgen Scheller
- Institut für Biochemie und Molekularbiologie II, Medizinische Fakultät der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Björn Stork
- Institut für Molekulare Medizin I, Medizinische Fakultät der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Andreas S Reichert
- Institut für Biochemie und Molekularbiologie I, Medizinische Fakultät der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Roland P Piekorz
- Institut für Biochemie und Molekularbiologie II, Medizinische Fakultät der Heinrich-Heine-Universität, Düsseldorf, Germany
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127
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Oh M, Lee J, Kim YJ, Rhee WJ, Park JH. Exosomes Derived from Human Induced Pluripotent Stem Cells Ameliorate the Aging of Skin Fibroblasts. Int J Mol Sci 2018; 19:ijms19061715. [PMID: 29890746 PMCID: PMC6032439 DOI: 10.3390/ijms19061715] [Citation(s) in RCA: 134] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 06/06/2018] [Accepted: 06/07/2018] [Indexed: 12/26/2022] Open
Abstract
Stem cells and their paracrine factors have emerged as a resource for regenerative medicine. Many studies have shown the beneficial effects of paracrine factors secreted from adult stem cells, such as exosomes, on skin aging. However, to date, few reports have demonstrated the use of exosomes derived from human pluripotent stem cells for the treatment of skin aging. In this study, we collected exosomes from the conditioned medium of human induced pluripotent stem cells (iPSCs) and investigated the effect on aged human dermal fibroblasts (HDFs). Cell proliferation and viability were determined by an MTT assay and cell migration capacity was shown by a scratch wound assay and a transwell migration assay. To induce photoaging and natural senescence, HDFs were irradiated by UVB (315 nm) and subcultured for over 30 passages, respectively. The expression level of certain mRNAs was evaluated by quantitative real-time PCR (qPCR). Senescence-associated-β-galactosidase (SA-β-Gal) activity was assessed as a marker of natural senescence. As a result, we found that exosomes derived from human iPSCs (iPSCs-Exo) stimulated the proliferation and migration of HDFs under normal conditions. Pretreatment with iPSCs-Exo inhibited the damages of HDFs and overexpression of matrix-degrading enzymes (MMP-1/3) caused by UVB irradiation. The iPSCs-Exo also increased the expression level of collagen type I in the photo-aged HDFs. In addition, we demonstrated that iPSCs-Exo significantly reduced the expression level of SA-β-Gal and MMP-1/3 and restored the collagen type I expression in senescent HDFs. Taken together, it is anticipated that these results suggest a therapeutic potential of iPSCs-Exo for the treatment of skin aging.
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Affiliation(s)
- Myeongsik Oh
- Department of Medical Biomaterials Engineering, Kangwon National University, 1 Kangwondaehak-gil, Chuncheon-si, Gangwon-do 24341, Korea.
| | - Jinhee Lee
- Division of Bioengineering, Incheon National University, Incheon 22012, Korea.
| | - Yu Jin Kim
- Department of Medical Biomaterials Engineering, Kangwon National University, 1 Kangwondaehak-gil, Chuncheon-si, Gangwon-do 24341, Korea.
| | - Won Jong Rhee
- Division of Bioengineering, Incheon National University, Incheon 22012, Korea.
| | - Ju Hyun Park
- Department of Medical Biomaterials Engineering, Kangwon National University, 1 Kangwondaehak-gil, Chuncheon-si, Gangwon-do 24341, Korea.
- Institute of Bioscience and Biotechnology, Kangwon National University, 1 Kangwondaehak-gil, Chuncheon-si, Gangwon-do 24341, Korea.
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128
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Effect of oral administration of collagen hydrolysates from Nile tilapia on the chronologically aged skin. J Funct Foods 2018. [DOI: 10.1016/j.jff.2018.03.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
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129
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Nakamura M, Haarmann-Stemmann T, Krutmann J, Morita A. Alternative test models for skin ageing research. Exp Dermatol 2018; 27:495-500. [DOI: 10.1111/exd.13519] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/19/2018] [Indexed: 12/29/2022]
Affiliation(s)
- Motoki Nakamura
- Department of Geriatric and Environmental Dermatology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | | | - Jean Krutmann
- IUF-Leibniz Research Institute for Environmental Medicine; Düsseldorf Germany
- Medical Faculty; Heinrich-Heine-University; Düsseldorf Germany
| | - Akimichi Morita
- Department of Geriatric and Environmental Dermatology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
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130
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Lim J, Lim CJ, Kim S, Nam G, Chang M, Park K, Park K, Kim HJ, Ahn JK, Jeong S. Antiaging and antioxidant effects of topical autophagy activator: A randomized, placebo‐controlled, double‐blinded study. J Cosmet Dermatol 2018. [DOI: 10.1111/jocd.12530] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Jongmi Lim
- CRID Center NeoPharm Co., Ltd. Daejeon South Korea
| | - Chae Jin Lim
- Incospharm Corp. Daejeon South Korea
- Department of Microbiology and Molecular Biology School of Bioscience and Biotechnology Chungnam National University Daejeon South Korea
| | - Sungwoo Kim
- CRID Center NeoPharm Co., Ltd. Daejeon South Korea
| | - Gaewon Nam
- Department of Bio‐Cosmetic Science Seowon University Cheongju South Korea
| | - Minyoul Chang
- Department of Bio‐Cosmetic Science Seowon University Cheongju South Korea
| | | | - Kyungho Park
- Convergence Program of Material Science for Medicine and Pharmaceutics, and Department of Food Science and Nutrition Hallym University Chuncheon South Korea
| | - Hyun Jung Kim
- Department of Dermatology Seoul Medical Center Seoul Korea
| | - Jeong Keun Ahn
- Department of Microbiology and Molecular Biology School of Bioscience and Biotechnology Chungnam National University Daejeon South Korea
| | - Sekyoo Jeong
- Department of Bio‐Cosmetic Science Seowon University Cheongju South Korea
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131
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Chen M, Lyu G, Han M, Nie H, Shen T, Chen W, Niu Y, Song Y, Li X, Li H, Chen X, Wang Z, Xia Z, Li W, Tian XL, Ding C, Gu J, Zheng Y, Liu X, Hu J, Wei G, Tao W, Ni T. 3' UTR lengthening as a novel mechanism in regulating cellular senescence. Genome Res 2018; 28:285-294. [PMID: 29440281 PMCID: PMC5848608 DOI: 10.1101/gr.224451.117] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 01/24/2018] [Indexed: 01/09/2023]
Abstract
Cellular senescence has been viewed as a tumor suppression mechanism and also as a contributor to individual aging. Widespread shortening of 3' untranslated regions (3' UTRs) in messenger RNAs (mRNAs) by alternative polyadenylation (APA) has recently been discovered in cancer cells. However, the role of APA in the process of cellular senescence remains elusive. Here, we found that hundreds of genes in senescent cells tended to use distal poly(A) (pA) sites, leading to a global lengthening of 3' UTRs and reduced gene expression. Genes that harbor longer 3' UTRs in senescent cells were enriched in senescence-related pathways. Rras2, a member of the Ras superfamily that participates in multiple signal transduction pathways, preferred longer 3' UTR usage and exhibited decreased expression in senescent cells. Depletion of Rras2 promoted senescence, while rescue of Rras2 reversed senescence-associated phenotypes. Mechanistically, splicing factor TRA2B bound to a core "AGAA" motif located in the alternative 3' UTR of Rras2, thereby reducing the RRAS2 protein level and causing senescence. Both proximal and distal poly(A) signals showed strong sequence conservation, highlighting the vital role of APA regulation during evolution. Our results revealed APA as a novel mechanism in regulating cellular senescence.
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Affiliation(s)
- Meng Chen
- State Key Laboratory of Genetic Engineering and Ministry of Education (MOE) Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center of Genetics and Development, School of Life Sciences and Huashan Hospital, Fudan University, Shanghai, 200438 China
| | - Guoliang Lyu
- MOE Key Laboratory of Cell Proliferation and Differentiation, School of Life Sciences, Peking University, Beijing, 100871 China
| | - Miao Han
- State Key Laboratory of Genetic Engineering and Ministry of Education (MOE) Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center of Genetics and Development, School of Life Sciences and Huashan Hospital, Fudan University, Shanghai, 200438 China
| | - Hongbo Nie
- State Key Laboratory of Genetic Engineering and Ministry of Education (MOE) Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center of Genetics and Development, School of Life Sciences and Huashan Hospital, Fudan University, Shanghai, 200438 China
| | - Ting Shen
- State Key Laboratory of Genetic Engineering and Ministry of Education (MOE) Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center of Genetics and Development, School of Life Sciences and Huashan Hospital, Fudan University, Shanghai, 200438 China
| | - Wei Chen
- State Key Laboratory of Genetic Engineering and Ministry of Education (MOE) Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center of Genetics and Development, School of Life Sciences and Huashan Hospital, Fudan University, Shanghai, 200438 China
| | - Yichi Niu
- State Key Laboratory of Genetic Engineering and Ministry of Education (MOE) Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center of Genetics and Development, School of Life Sciences and Huashan Hospital, Fudan University, Shanghai, 200438 China
| | - Yifan Song
- State Key Laboratory of Genetic Engineering and Ministry of Education (MOE) Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center of Genetics and Development, School of Life Sciences and Huashan Hospital, Fudan University, Shanghai, 200438 China
| | - Xueping Li
- State Key Laboratory of Genetic Engineering and Ministry of Education (MOE) Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center of Genetics and Development, School of Life Sciences and Huashan Hospital, Fudan University, Shanghai, 200438 China
| | - Huan Li
- State Key Laboratory of Genetic Engineering and Ministry of Education (MOE) Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center of Genetics and Development, School of Life Sciences and Huashan Hospital, Fudan University, Shanghai, 200438 China
| | - Xinyu Chen
- State Key Laboratory of Genetic Engineering and Ministry of Education (MOE) Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center of Genetics and Development, School of Life Sciences and Huashan Hospital, Fudan University, Shanghai, 200438 China
| | - Ziyue Wang
- State Key Laboratory of Genetic Engineering and Ministry of Education (MOE) Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center of Genetics and Development, School of Life Sciences and Huashan Hospital, Fudan University, Shanghai, 200438 China
| | - Zheng Xia
- Division of Biostatistics, Dan L. Duncan Cancer Center and Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas 77030, USA
| | - Wei Li
- Division of Biostatistics, Dan L. Duncan Cancer Center and Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas 77030, USA
| | - Xiao-Li Tian
- Human Aging Research Institute and School of Life Sciences, Nanchang University, Nanchang, 330031 China
| | - Chen Ding
- State Key Laboratory of Genetic Engineering, Collaborative Innovation Center of Genetics and Development, School of Life Sciences, Fudan University, Shanghai, 200438 China
| | - Jun Gu
- MOE Key Laboratory of Cell Proliferation and Differentiation, School of Life Sciences, Peking University, Beijing, 100871 China
| | - Yufang Zheng
- State Key Laboratory of Genetic Engineering and Ministry of Education (MOE) Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center of Genetics and Development, School of Life Sciences and Huashan Hospital, Fudan University, Shanghai, 200438 China
| | - Xinhua Liu
- School of Pharmacy, Fudan University, Shanghai, 201203 China
| | - Jinfeng Hu
- School of Pharmacy, Fudan University, Shanghai, 201203 China
| | - Gang Wei
- State Key Laboratory of Genetic Engineering and Ministry of Education (MOE) Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center of Genetics and Development, School of Life Sciences and Huashan Hospital, Fudan University, Shanghai, 200438 China
| | - Wei Tao
- MOE Key Laboratory of Cell Proliferation and Differentiation, School of Life Sciences, Peking University, Beijing, 100871 China
| | - Ting Ni
- State Key Laboratory of Genetic Engineering and Ministry of Education (MOE) Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center of Genetics and Development, School of Life Sciences and Huashan Hospital, Fudan University, Shanghai, 200438 China
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132
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Faucz LL, Will SE, Rodrigues CJ, Hesse H, Moraes AC, Maria DA. Quantitative evaluation of collagen and elastic fibers after intense pulsed light treatment of mouse skin. Lasers Surg Med 2018; 50:644-650. [PMID: 29336034 DOI: 10.1002/lsm.22782] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/10/2017] [Indexed: 02/06/2023]
Abstract
BACKGROUND AND OBJECTIVE The aging of human skin includes intrinsic aging and photo-aging, which are characterized by a decrease in collagen and the deposition of abnormal elastic fibers. Intense pulsed light (IPL) sources are widely used in medicine to treat various cosmetic problems, including photo-damaged skin. Few studies have examined the microscopic changes produced by IPL. The objective of this study was to quantitatively evaluate the effects of IPL on collagen and elastic fibers in mice. MATERIALS AND METHODS Forty female BALB/c mice were divided into four subgroups. Group 1 was the control group (n = 10), and groups 2, 3, and 4 were treatment groups (n = 10 in each group). Group 2 received one treatment, group 3 received two treatments, and group 4 received three treatments every 2 weeks. Skin tissue was obtained from irradiated areas 24 hours after the last treatment in each mouse. Collagen fibers were identified using the picrosirius red method. Elastic fibers were marked by Weigert-oxone stain. All samples were analyzed and quantified by a light microscope using analyzer system images. RESULTS Group 4, which received three IPL treatments, showed significant quantitative increases in both collagen fibers (P < 0.05) and elastic fibers (P < 0.01). Collagen fibers demonstrated a better parallel distribution in relation to the epidermis. CONCLUSION IPL treatment significantly increased the number of collagen and elastic fibers within the dermis and improved the parallel distribution of collagen fibers in relation to the epidermis. These results were evident after three IPL treatments. Lasers Surg. Med. © 2018 Wiley Periodicals, Inc.
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Affiliation(s)
- Luciana L Faucz
- Laboratory of Biochemistry and Biophysics of Butantan Institute, University of Sao Paulo, Butantã, Sao Paulo, Brazil
- Dermatology Service, Faculty of Medicine, Hospital Universitário Evangelico de Curitiba; Faculdade Evangélica do Paraná, Curitiba, Brazil
| | - Sonia E Will
- Laboratory of Biochemistry and Biophysics of Butantan Institute, University of Sao Paulo, Butantã, Sao Paulo, Brazil
| | - Consuelo J Rodrigues
- Faculty of Medicine, Department of Orthopedics and Traumatology, University of Sao Paulo, Sao Paulo, Brazil
| | - Henrique Hesse
- University of Santa Cruz do Sul, Santa Cruz do Sul, Rio Grande do Sul, Brazil
| | - Angelina C Moraes
- Laboratory of Biochemistry and Biophysics of Butantan Institute, University of Sao Paulo, Butantã, Sao Paulo, Brazil
| | - Durvanei A Maria
- Laboratory of Biochemistry and Biophysics of Butantan Institute, University of Sao Paulo, Butantã, Sao Paulo, Brazil
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133
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Bohaumilitzky L, Huber AK, Stork EM, Wengert S, Woelfl F, Boehm H. A Trickster in Disguise: Hyaluronan's Ambivalent Roles in the Matrix. Front Oncol 2017; 7:242. [PMID: 29062810 PMCID: PMC5640889 DOI: 10.3389/fonc.2017.00242] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Accepted: 09/22/2017] [Indexed: 02/04/2023] Open
Abstract
Hyaluronan (HA) is a simple but diverse glycosaminoglycan. It plays a major role in aging, cellular senescence, cancer, and tissue homeostasis. In which way HA affects the surrounding tissues greatly depends on the molecular weight of HA. Whereas high molecular weight HA is associated with homeostasis and protective effects, HA fragments tend to be linked to the pathologic state. Furthermore, the interaction of HA with its binding partners, the hyaladherins, such as CD44, is essential for sustaining tissue integrity and is likewise related to cancer. The naked mole rat, a rodent species, possesses a special form of very high molecular weight (vHMW) HA, which is associated with the extraordinary cancer resistance and longevity of those animals. This review addresses HA and its diverse facets: from HA synthesis to degradation, from oligomeric HA to vHMW-HA and from its beneficial properties to the involvement in pathologies. We further discuss the functions of HA in the naked mole rat and compare them to human conditions. Though intensively researched, this simple polymer bears some secrets that may hold the key for a better understanding of cellular processes and the development of diseases, such as cancer.
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Affiliation(s)
- Lena Bohaumilitzky
- Institute of Pharmacy and Molecular Biotechnology, University of Heidelberg, Heidelberg, Germany
| | - Ann-Kathrin Huber
- Institute of Pharmacy and Molecular Biotechnology, University of Heidelberg, Heidelberg, Germany
| | - Eva Maria Stork
- Institute of Pharmacy and Molecular Biotechnology, University of Heidelberg, Heidelberg, Germany
| | - Simon Wengert
- Institute of Pharmacy and Molecular Biotechnology, University of Heidelberg, Heidelberg, Germany
| | - Franziska Woelfl
- Institute of Pharmacy and Molecular Biotechnology, University of Heidelberg, Heidelberg, Germany
| | - Heike Boehm
- CSF Biomaterials, Max Planck Institute for Medical Research, Heidelberg, Germany.,Department of Biophysical Chemistry, University of Heidelberg, Heidelberg, Germany
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134
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Alberio T, Pieroni L, Ronci M, Banfi C, Bongarzone I, Bottoni P, Brioschi M, Caterino M, Chinello C, Cormio A, Cozzolino F, Cunsolo V, Fontana S, Garavaglia B, Giusti L, Greco V, Lucacchini A, Maffioli E, Magni F, Monteleone F, Monti M, Monti V, Musicco C, Petrosillo G, Porcelli V, Saletti R, Scatena R, Soggiu A, Tedeschi G, Zilocchi M, Roncada P, Urbani A, Fasano M. Toward the Standardization of Mitochondrial Proteomics: The Italian Mitochondrial Human Proteome Project Initiative. J Proteome Res 2017; 16:4319-4329. [DOI: 10.1021/acs.jproteome.7b00350] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Tiziana Alberio
- Department
of Science and High Technology, Università degli Studi dell’Insubria, Busto Arsizio I-21052, Italy
| | | | - Maurizio Ronci
- IRCCS-Santa Lucia
Foundation, Rome I-00143, Italy
- Department
of Medical, Oral, and Biotechnological Sciences, University G. d’Annunzio of Chieti-Pescara, Chieti I-66013, Italy
| | - Cristina Banfi
- Centro Cardiologico Monzino, IRCCS, Milan I-20138, Italy
| | - Italia Bongarzone
- Department
of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan I-20133, Italy
| | - Patrizia Bottoni
- Institute
of Biochemistry and Clinical Biochemistry, School of Medicine - Catholic University, Rome I-00168, Italy
| | - Maura Brioschi
- Centro Cardiologico Monzino, IRCCS, Milan I-20138, Italy
| | - Marianna Caterino
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli “Federico II”, Naples I-80131, Italy
- CEINGE Biotecnologie
Avanzate s.c.a.r.l., Naples I-80145, Italy
| | - Clizia Chinello
- Department
of Medicine and Surgery, University of Milano-Bicocca, Monza I-20900, Italy
| | - Antonella Cormio
- Dipartimento di Bioscienze, Biotecnologie e Biofarmaceutica, Università di Bari, Bari I-70125, Italy
| | - Flora Cozzolino
- CEINGE Biotecnologie
Avanzate s.c.a.r.l., Naples I-80145, Italy
- Dipartimento di Scienze Chimiche, Università degli Studi di Napoli “Federico II”, Naples I-80126, Italy
| | - Vincenzo Cunsolo
- Department
of Chemical Sciences, University of Catania, Catania I-95125, Italy
| | - Simona Fontana
- Dipartimento
di Biopatologia e Biotecnologie Mediche, University of Palermo, Palermo I-90123, Italy
| | - Barbara Garavaglia
- Molecular
Neurogenetics Unit, IRCCS Foundation Neurological Institute C. Besta, Milan I-20126, Italy
| | - Laura Giusti
- Department of Pharmacy, University of Pisa, Pisa I-56126, Italy
| | | | | | - Elisa Maffioli
- Department
of Veterinary Medicine (DiMeVet), University of Milan, Milan I-20133, Italy
| | - Fulvio Magni
- Department
of Medicine and Surgery, University of Milano-Bicocca, Monza I-20900, Italy
| | - Francesca Monteleone
- Dipartimento
di Biopatologia e Biotecnologie Mediche, University of Palermo, Palermo I-90123, Italy
| | - Maria Monti
- CEINGE Biotecnologie
Avanzate s.c.a.r.l., Naples I-80145, Italy
- Dipartimento di Scienze Chimiche, Università degli Studi di Napoli “Federico II”, Naples I-80126, Italy
| | - Valentina Monti
- Molecular
Neurogenetics Unit, IRCCS Foundation Neurological Institute C. Besta, Milan I-20126, Italy
| | - Clara Musicco
- Bioenergetics
and Molecular Biotechnologies (IBIOM), CNR - Institute of Biomembranes, Bari I-70126, Italy
| | - Giuseppe Petrosillo
- Bioenergetics
and Molecular Biotechnologies (IBIOM), CNR - Institute of Biomembranes, Bari I-70126, Italy
| | - Vito Porcelli
- Dipartimento di Bioscienze, Biotecnologie e Biofarmaceutica, Università di Bari, Bari I-70125, Italy
| | - Rosaria Saletti
- Department
of Chemical Sciences, University of Catania, Catania I-95125, Italy
| | - Roberto Scatena
- Institute
of Biochemistry and Clinical Biochemistry, School of Medicine - Catholic University, Rome I-00168, Italy
| | - Alessio Soggiu
- Department
of Veterinary Medicine (DiMeVet), University of Milan, Milan I-20133, Italy
| | - Gabriella Tedeschi
- Department
of Veterinary Medicine (DiMeVet), University of Milan, Milan I-20133, Italy
- Fondazione Filarete, Milan I-20139, Italy
| | - Mara Zilocchi
- Department
of Science and High Technology, Università degli Studi dell’Insubria, Busto Arsizio I-21052, Italy
| | - Paola Roncada
- Istituto Sperimentale Italiano Lazzaro Spallanzani, Rivolta d’Adda I-26027, Italy
| | - Andrea Urbani
- IRCCS-Santa Lucia
Foundation, Rome I-00143, Italy
- Institute
of Biochemistry and Clinical Biochemistry, School of Medicine - Catholic University, Rome I-00168, Italy
| | - Mauro Fasano
- Department
of Science and High Technology, Università degli Studi dell’Insubria, Busto Arsizio I-21052, Italy
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135
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Boilan E, Winant V, Dumortier E, ElMoualij B, Quatresooz P, Osiewacz HD, Debacq-Chainiaux F, Toussaint O. Role of Prion protein in premature senescence of human fibroblasts. Mech Ageing Dev 2017; 170:106-113. [PMID: 28800967 DOI: 10.1016/j.mad.2017.08.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 06/29/2017] [Accepted: 08/03/2017] [Indexed: 01/07/2023]
Abstract
Prion protein (PrP) is essentially known for its capacity to induce neurodegenerative prion diseases in mammals caused by a conformational change in its normal cellular isoform (PrPC) into an infectious and disease-associated misfolded form, called scrapie isoform (PrPSc). Although its sequence is highly conserved, less information is available on its physiological role under normal conditions. However, increasing evidence supports a role for PrPC in the cellular response to oxidative stress. In the present study, a new link between PrP and senescence is highlighted. The role of PrP in premature senescence induced by copper was investigated. WI-38 human fibroblasts were incubated with copper sulfate (CuSO4) to trigger premature senescence. This induced an increase of PrP mRNA level, an increase of protein abundance of the normal form of PrP and a nuclear localization of the protein. Knockdown of PrP expression using specific small interfering RNA (siRNA) gave rise to appearance of several biomarkers of senescence as a senescent morphology, an increase of senescence associated β-galactosidase activity and a decrease of the cellular proliferative potential. Overall these data suggest that PrP protects cells against premature senescence induced by copper.
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Affiliation(s)
- Emmanuelle Boilan
- Unité de Recherche en Biologie Cellulaire (URBC) - Namur Research Institute for Life Sciences (Narilis), University of Namur, Belgium.
| | - Virginie Winant
- Unité de Recherche en Biologie Cellulaire (URBC) - Namur Research Institute for Life Sciences (Narilis), University of Namur, Belgium
| | - Elise Dumortier
- Unité de Recherche en Biologie Cellulaire (URBC) - Namur Research Institute for Life Sciences (Narilis), University of Namur, Belgium
| | | | | | - Heinz D Osiewacz
- Institute of Molecular Biosciences, Johann Wolfgang Goethe University, Frankfurt am Main, Germany
| | - Florence Debacq-Chainiaux
- Unité de Recherche en Biologie Cellulaire (URBC) - Namur Research Institute for Life Sciences (Narilis), University of Namur, Belgium.
| | - Olivier Toussaint
- Unité de Recherche en Biologie Cellulaire (URBC) - Namur Research Institute for Life Sciences (Narilis), University of Namur, Belgium
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136
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In vivo and in vitro ageing results in accumulation of de novo copy number variations in bulls. Sci Rep 2017; 7:1631. [PMID: 28487564 PMCID: PMC5431667 DOI: 10.1038/s41598-017-01793-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Accepted: 04/03/2017] [Indexed: 11/24/2022] Open
Abstract
We have identified de novo copy number variations (CNVs) generated in bulls as they age. Blood samples from eight bulls were collected and SNP arrayed in a prospective design over 30 months allowing us to differentiate de novo CNVs from constant CNVs that are present throughout the sampling period. Quite remarkably, the total number of CNVs doubled over the 30-month period, as we observed an almost equal number of de novo and constant CNVs (107 and 111, respectively, i.e. 49% and 51%). Twice as many de novo CNVs emerged during the second half of the sampling schedule as in the first part. It suggests a dynamic generation of de novo CNVs in the bovine genome that becomes more frequent as the age of the animal progresses. In a second experiment de novo CNVs were detected through in vitro ageing of bovine fibroblasts by sampling passage #5, #15 and #25. De novo CNVs also became more frequent, but the proportion of them was only ~25% of the total number of CNVs (21 out of 85). Temporal generation of de novo CNVs resulted in increasing genome coverage. Genes and quantitative trait loci overlapping de novo CNVs were further investigated for ageing related functions.
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137
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A Holistic Approach to Antiaging as an Adjunct to Antiaging Procedures: A Review of the Literature. Dermatol Surg 2017; 43:475-484. [PMID: 28359075 DOI: 10.1097/dss.0000000000001027] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Aging is a multifactorial process and depends on both intrinsic and extrinsic factors. Procedural options for diminishing signs of intrinsic aging and cosmetic rejuvenation have expanded dramatically. However, less attention is paid to counseling patients on options for mitigating extrinsic factors related to aging. OBJECTIVE The objective of this study was to review changes that occur with intrinsic and extrinsic aging, and provide evidence-based holistic counseling recommendations that can be used synergistically with aesthetic procedures to maximize antiaging interventions. MATERIALS AND METHODS A PubMed search was conducted for articles on intrinsic and extrinsic aging as it relates to skin, fat, muscle, and bone. Key clinical trials and studies on the effect of diet, hormones, exercise, sleep, stress, dental hygiene, smoking, pollution, and oxidative stress on the aging process are reviewed, and treatment recommendations are summarized based on available evidence. RESULTS Conventional cosmetic procedures and cosmeceuticals work together with nutritious diet, exercise, dental hygiene, hormonal balance, stress reduction, smoking and pollution avoidance, and healthy sleep patterns for a better effect on antiaging. CONCLUSION A combination approach of multiple nonsurgical modalities along with healthy lifestyle recommendations to minimize intrinsic and extrinsic aging factors allows cosmetic practitioners to target multiple facets of aging concurrently and maximize the aesthetic interventions cosmetic dermatologists/practitioners provide.
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138
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Toutfaire M, Bauwens E, Debacq-Chainiaux F. The impact of cellular senescence in skin ageing: A notion of mosaic and therapeutic strategies. Biochem Pharmacol 2017; 142:1-12. [PMID: 28408343 DOI: 10.1016/j.bcp.2017.04.011] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 04/07/2017] [Indexed: 02/07/2023]
Abstract
Cellular senescence is now recognized as one of the nine hallmarks of ageing. Recent data show the involvement of senescent cells in tissue ageing and some age-related diseases. Skin represents an ideal model for the study of ageing. Indeed, skin ageing varies between individuals depending on their chronological age but also on their exposure to various exogenous factors (mainly ultraviolet rays). If senescence traits can be detected with ageing in the skin, the senescent phenotype varies among the various skin cell types. Moreover, the origin of cellular senescence in the skin is still unknown, and multiple origins are possible. This reflects the mosaic of skin ageing. Senescent cells can interfere with their microenvironment, either via the direct secretion of factors (the senescence-associated secretory phenotype) or via other methods of communication, such as extracellular vesicles. Knowledge regarding the impact of cellular senescence on skin ageing could be integrated into dermatology research, especially to limit the appearance of senescent cells after photo(chemo)therapy or in age-related skin diseases. Therapeutic approaches include the clearance of senescent cells via the use of senolytics or via the cooperation with the immune system.
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Affiliation(s)
- Marie Toutfaire
- URBC, NAmur Research Institute for LIfe Science (NARILIS), University of Namur, Namur, Belgium
| | - Emilie Bauwens
- URBC, NAmur Research Institute for LIfe Science (NARILIS), University of Namur, Namur, Belgium
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139
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Lang A, Grether-Beck S, Singh M, Kuck F, Jakob S, Kefalas A, Altinoluk-Hambüchen S, Graffmann N, Schneider M, Lindecke A, Brenden H, Felsner I, Ezzahoini H, Marini A, Weinhold S, Vierkötter A, Tigges J, Schmidt S, Stühler K, Köhrer K, Uhrberg M, Haendeler J, Krutmann J, Piekorz RP. MicroRNA-15b regulates mitochondrial ROS production and the senescence-associated secretory phenotype through sirtuin 4/SIRT4. Aging (Albany NY) 2017; 8:484-505. [PMID: 26959556 PMCID: PMC4833141 DOI: 10.18632/aging.100905] [Citation(s) in RCA: 91] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Mammalian sirtuins are involved in the control of metabolism and life-span regulation. Here, we link the mitochondrial sirtuin SIRT4 with cellular senescence, skin aging, and mitochondrial dysfunction. SIRT4 expression significantly increased in human dermal fibroblasts undergoing replicative or stress-induced senescence triggered by UVB or gamma-irradiation. In-vivo, SIRT4 mRNA levels were upregulated in photoaged vs. non-photoaged human skin. Interestingly, in all models of cellular senescence and in photoaged skin, upregulation of SIRT4 expression was associated with decreased levels of miR-15b. The latter was causally linked to increased SIRT4 expression because miR-15b targets a functional binding site in the SIRT4 gene and transfection of oligonucleotides mimicking miR-15b function prevented SIRT4 upregulation in senescent cells. Importantly, increased SIRT4 negatively impacted on mitochondrial functions and contributed to the development of a senescent phenotype. Accordingly, we observed that inhibition of miR-15b, in a SIRT4-dependent manner, increased generation of mitochondrial reactive oxygen species, decreased mitochondrial membrane potential, and modulated mRNA levels of nuclear encoded mitochondrial genes and components of the senescence-associated secretory phenotype (SASP). Thus, miR-15b is a negative regulator of stress-induced SIRT4 expression thereby counteracting senescence associated mitochondrial dysfunction and regulating the SASP and possibly organ aging, such as photoaging of human skin.
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Affiliation(s)
- Alexander Lang
- Institut für Biochemie und Molekularbiologie II, Universitätsklinikum der Heinrich-Heine-Universität, Düsseldorf, Germany.,Molecular Proteomics Laboratory, BMFZ, Universitätsklinikum der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Susanne Grether-Beck
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Madhurendra Singh
- Institut für Biochemie und Molekularbiologie II, Universitätsklinikum der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Fabian Kuck
- Institut für Biochemie und Molekularbiologie II, Universitätsklinikum der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Sascha Jakob
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Andreas Kefalas
- Institut für Biochemie und Molekularbiologie II, Universitätsklinikum der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Simone Altinoluk-Hambüchen
- Institut für Biochemie und Molekularbiologie II, Universitätsklinikum der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Nina Graffmann
- Institut für Transplantationsdiagnostik und Zelltherapeutika (ITZ), Düsseldorf, Germany
| | - Maren Schneider
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Antje Lindecke
- Biologisch-Medizinisches Forschungszentrum (BMFZ), Düsseldorf, Germany
| | - Heidi Brenden
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Ingo Felsner
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Hakima Ezzahoini
- Institut für Biochemie und Molekularbiologie II, Universitätsklinikum der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Alessandra Marini
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Sandra Weinhold
- Institut für Transplantationsdiagnostik und Zelltherapeutika (ITZ), Düsseldorf, Germany
| | - Andrea Vierkötter
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Julia Tigges
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Stephan Schmidt
- Institut für Biochemie und Molekularbiologie II, Universitätsklinikum der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Kai Stühler
- Molecular Proteomics Laboratory, BMFZ, Universitätsklinikum der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Karl Köhrer
- Biologisch-Medizinisches Forschungszentrum (BMFZ), Düsseldorf, Germany
| | - Markus Uhrberg
- Institut für Transplantationsdiagnostik und Zelltherapeutika (ITZ), Düsseldorf, Germany
| | - Judith Haendeler
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Jean Krutmann
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany.,University of Düsseldorf, Medical Faculty, Düsseldorf, Germany
| | - Roland P Piekorz
- Institut für Biochemie und Molekularbiologie II, Universitätsklinikum der Heinrich-Heine-Universität, Düsseldorf, Germany
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140
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Eberhardt K, Matthäus C, Winter D, Wiegand C, Hipler UC, Diekmann S, Popp J. Raman and infrared spectroscopy differentiate senescent from proliferating cells in a human dermal fibroblast 3D skin model. Analyst 2017; 142:4405-4414. [DOI: 10.1039/c7an00592j] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Senescence-associated alterations were detected in biomolecules of 3D cultured cells and these cells were distinguished from 2D cultured cells.
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Affiliation(s)
- Katharina Eberhardt
- Leibniz Institute of Photonic Technology Jena
- 07745 Jena
- Germany
- Institute for Physical Chemistry and Abbe Center of Photonics
- Friedrich Schiller University Jena
| | - Christian Matthäus
- Leibniz Institute of Photonic Technology Jena
- 07745 Jena
- Germany
- Institute for Physical Chemistry and Abbe Center of Photonics
- Friedrich Schiller University Jena
| | - Doreen Winter
- University Hospital Jena
- Department of Dermatology
- 07740 Jena
- Germany
| | - Cornelia Wiegand
- University Hospital Jena
- Department of Dermatology
- 07740 Jena
- Germany
| | | | - Stephan Diekmann
- Leibniz Institute on Aging – Fritz Lipmann Institute
- Department of Molecular Biology
- 07745 Jena
- Germany
| | - Jürgen Popp
- Leibniz Institute of Photonic Technology Jena
- 07745 Jena
- Germany
- Institute for Physical Chemistry and Abbe Center of Photonics
- Friedrich Schiller University Jena
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141
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Love B. Connective and Soft Tissues. Biomaterials 2017. [DOI: 10.1016/b978-0-12-809478-5.00004-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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142
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Löwenau LJ, Zoschke C, Brodwolf R, Volz P, Hausmann C, Wattanapitayakul S, Boreham A, Alexiev U, Schäfer-Korting M. Increased permeability of reconstructed human epidermis from UVB-irradiated keratinocytes. Eur J Pharm Biopharm 2016; 116:149-154. [PMID: 28034807 DOI: 10.1016/j.ejpb.2016.12.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Revised: 10/25/2016] [Accepted: 12/23/2016] [Indexed: 01/08/2023]
Abstract
Extrinsic (photo) aging accelerates chronologically aging in the skin due to cumulative UV irradiation. Despite recent insights into the molecular mechanisms of fibroblast aging, age-related changes of the skin barrier function have been understudied. In contrast, the constantly increasing subpopulation of aged patients causes a clinical need for effective and safe (dermatological) treatment. Herein, we reconstructed human epidermis from UVB-irradiated keratinocytes (UVB-RHE). UVB-irradiated keratinocytes show higher activity of senescence associated β-galactosidase, less cell proliferation, and reduced viability. Higher amounts of β-galactosidase are also detectable in UVB-RHE. Moreover, UVB-RHE release more interleukin-1α and -8 into the culture medium and present altered differentiation with a thinner stratum corneum compared to normal RHE. For the first time, the permeation of testosterone and caffeine through UVB-irradiated RHE indicate a clear influence of the UVB stress on the skin barrier function. Impaired barrier function was confirmed by the increased permeation of testosterone and caffeine as well as by the increased penetration of dendritic core-multishell nanocarriers into the constructs. Taken together, UVB-RHE emulate hallmarks of skin aging and might contribute to an improved non-clinical development of medicinal or cosmetic products.
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Affiliation(s)
- Lilian Julia Löwenau
- Institute for Pharmacy, Freie Universität Berlin, Königin-Luise-Str. 2+4, 14195 Berlin, Germany
| | - Christian Zoschke
- Institute for Pharmacy, Freie Universität Berlin, Königin-Luise-Str. 2+4, 14195 Berlin, Germany
| | - Robert Brodwolf
- Institute of Experimental Physics, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - Pierre Volz
- Institute of Experimental Physics, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - Christian Hausmann
- Institute for Pharmacy, Freie Universität Berlin, Königin-Luise-Str. 2+4, 14195 Berlin, Germany
| | - Suvara Wattanapitayakul
- Institute for Pharmacy, Freie Universität Berlin, Königin-Luise-Str. 2+4, 14195 Berlin, Germany
| | - Alexander Boreham
- Institute of Experimental Physics, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - Ulrike Alexiev
- Institute of Experimental Physics, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - Monika Schäfer-Korting
- Institute for Pharmacy, Freie Universität Berlin, Königin-Luise-Str. 2+4, 14195 Berlin, Germany.
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143
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144
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Yalamanchili N, Kriete A, Alfego D, Danowski KM, Kari C, Rodeck U. Distinct Cell Stress Responses Induced by ATP Restriction in Quiescent Human Fibroblasts. Front Genet 2016; 7:171. [PMID: 27757122 PMCID: PMC5047886 DOI: 10.3389/fgene.2016.00171] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Accepted: 09/09/2016] [Indexed: 12/22/2022] Open
Abstract
Quiescence is the prevailing state of many cell types under homeostatic conditions. Yet, surprisingly little is known about how quiescent cells respond to energetic and metabolic challenges. To better understand compensatory responses of quiescent cells to metabolic stress, we established, in human primary dermal fibroblasts, an experimental ‘energy restriction’ model. Quiescence was achieved by short-term culture in serum-deprived media and ATP supply restricted using a combination of glucose transport inhibitors and mitochondrial uncouplers. In aggregate, these measures led to markedly reduced intracellular ATP levels while not compromising cell viability over the observation period of 48 h. Analysis of the transcription factor (TF) landscape induced by this treatment revealed alterations in several signal transduction nodes beyond the expected biosynthetic adaptations. These included increased abundance of NF-κB regulated TFs and altered TF subsets regulated by Akt and p53. The observed changes in gene regulation and corresponding alterations in key signaling nodes are likely to contribute to cell survival at intracellular ATP concentrations substantially below those achieved by growth factor deprivation alone. This experimental model provides a benchmark for the investigation of cell survival pathways and related molecular targets that are associated with restricted energy supply associated with biological aging and metabolic diseases.
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Affiliation(s)
- Nirupama Yalamanchili
- School of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia PA, USA
| | - Andres Kriete
- School of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia PA, USA
| | - David Alfego
- School of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia PA, USA
| | - Kelli M Danowski
- Department of Dermatology, St. Joseph Mercy Health System, Michigan State University, East Lansing MI, USA
| | - Csaba Kari
- Department of Dermatology and Cutaneous Biology, Thomas Jefferson University, Philadelphia PA, USA
| | - Ulrich Rodeck
- Department of Dermatology and Cutaneous Biology, Thomas Jefferson University, Philadelphia PA, USA
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145
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A Combination Approach with Lasers, Light, and Energy-Based Devices for Ultimate Rejuvenation of the Aging Face. CURRENT DERMATOLOGY REPORTS 2016. [DOI: 10.1007/s13671-016-0150-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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146
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Multiplexed high-content analysis of mitochondrial morphofunction using live-cell microscopy. Nat Protoc 2016; 11:1693-710. [PMID: 27560174 DOI: 10.1038/nprot.2016.094] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Mitochondria have a central role in cellular (patho)physiology, and they display a highly variable morphology that is probably coupled to their functional state. Here we present a protocol that allows unbiased and automated quantification of mitochondrial 'morphofunction' (i.e., morphology and membrane potential), cellular parameters (size, confluence) and nuclear parameters (number, morphology) in intact living primary human skin fibroblasts (PHSFs). Cells are cultured in 96-well plates and stained with tetramethyl rhodamine methyl ester (TMRM), calcein-AM (acetoxy-methyl ester) and Hoechst 33258. Next, multispectral fluorescence images are acquired using automated microscopy and processed to extract 44 descriptors. Subsequently, the descriptor data are subjected to a quality control (QC) algorithm based upon principal component analysis (PCA) and interpreted using univariate, bivariate and multivariate analysis. The protocol requires a time investment of ∼4 h distributed over 2 d. Although it is specifically developed for PHSFs, which are widely used in preclinical research, the protocol is portable to other cell types and can be scaled up for implementation in high-content screening.
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147
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Impaired DNA double-strand break repair contributes to the age-associated rise of genomic instability in humans. Cell Death Differ 2016; 23:1765-1777. [PMID: 27391797 DOI: 10.1038/cdd.2016.65] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Revised: 05/09/2016] [Accepted: 06/10/2016] [Indexed: 02/06/2023] Open
Abstract
Failing to repair DNA double-strand breaks by either nonhomologous end joining (NHEJ) or homologous recombination (HR) poses a threat to genome integrity, and may have roles in the onset of aging and age-related diseases. Recent work indicates an age-related decrease of NHEJ efficiency in mouse models, but whether NHEJ and HR change with age in humans and the underlying mechanisms of such a change remain uncharacterized. Here, using 50 eyelid fibroblast cell lines isolated from healthy donors at the age of 16-75 years, we demonstrate that the efficiency and fidelity of NHEJ, and the efficiency of HR decline with age, leading to increased IR sensitivity in cells isolated from old donors. Mechanistic analysis suggests that decreased expression of XRCC4, Lig4 and Lig3 drives the observed, age-associated decline of NHEJ efficiency and fidelity. Restoration of XRCC4 and Lig4 significantly promotes the fidelity and efficiency of NHEJ in aged fibroblasts. In contrast, essential HR-related factors, such as Rad51, do not change in expression level with age, but Rad51 exhibits a slow kinetics of recruitment to DNA damage sites in aged fibroblasts. Further rescue experiments indicate that restoration of XRCC4 and Lig4 may suppress the onset of stress-induced premature cellular senescence, suggesting that improving NHEJ efficiency and fidelity by targeting the NHEJ pathway holds great potential to delay aging and mitigate aging-related pathologies.
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148
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How Wounding via Lasers Has Potential Photocarcinogenic Preventative Effects via Dermal Remodeling. CURRENT DERMATOLOGY REPORTS 2016; 5:222-227. [PMID: 27840776 DOI: 10.1007/s13671-016-0143-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
As the incidence of non-melanoma skin cancer (NMSC) is increasing, there is a growing need to identify effective preventive strategies. A recently proposed hypothesis states that NMSC photocarcinogenesis is tightly linked to insufficient insulin growth factor-1 expression by agglomerated senescent fibroblasts in geriatric dermis. This paucity of IGF-1 expression in senile skin allows basal keratinocytes to mitotically propagate their UVB-altered genome and potentially initiate an actinic neoplasm. Here we review the role of the dermal microenvironment in NMSC pathogenesis, describe the impact of fibroblast senescence on this process and discuss how laser-induced dermal wounding can be effectively used to prevent NMSC development in geriatric patients.
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149
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Lukjanenko L, Jung MJ, Hegde N, Perruisseau-Carrier C, Migliavacca E, Rozo M, Karaz S, Jacot G, Schmidt M, Li L, Metairon S, Raymond F, Lee U, Sizzano F, Wilson DH, Dumont NA, Palini A, Fässler R, Steiner P, Descombes P, Rudnicki MA, Fan CM, von Maltzahn J, Feige JN, Bentzinger CF. Loss of fibronectin from the aged stem cell niche affects the regenerative capacity of skeletal muscle in mice. Nat Med 2016; 22:897-905. [PMID: 27376579 DOI: 10.1038/nm.4126] [Citation(s) in RCA: 193] [Impact Index Per Article: 24.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 05/12/2016] [Indexed: 12/12/2022]
Abstract
Age-related changes in the niche have long been postulated to impair the function of somatic stem cells. Here we demonstrate that the aged stem cell niche in skeletal muscle contains substantially reduced levels of fibronectin (FN), leading to detrimental consequences for the function and maintenance of muscle stem cells (MuSCs). Deletion of the gene encoding FN from young regenerating muscles replicates the aging phenotype and leads to a loss of MuSC numbers. By using an extracellular matrix (ECM) library screen and pathway profiling, we characterize FN as a preferred adhesion substrate for MuSCs and demonstrate that integrin-mediated signaling through focal adhesion kinase and the p38 mitogen-activated protein kinase pathway is strongly de-regulated in MuSCs from aged mice because of insufficient attachment to the niche. Reconstitution of FN levels in the aged niche remobilizes stem cells and restores youth-like muscle regeneration. Taken together, we identify the loss of stem cell adhesion to FN in the niche ECM as a previously unknown aging mechanism.
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Affiliation(s)
- Laura Lukjanenko
- Nestlé Institute of Health Sciences (NIHS), Campus École Polytechnique Fédérale de Lausanne, École Polytechnique Fédérale de Lausanne Innovation Park, Lausanne, Switzerland.,École Polytechnique Fédérale de Lausanne, Doctoral Program in Biotechnology and Bioengineering, Lausanne, Switzerland
| | - M Juliane Jung
- Leibniz Institute for Age Research, Fritz Lipmann Institute, Jena, Germany
| | - Nagabhooshan Hegde
- Nestlé Institute of Health Sciences (NIHS), Campus École Polytechnique Fédérale de Lausanne, École Polytechnique Fédérale de Lausanne Innovation Park, Lausanne, Switzerland
| | - Claire Perruisseau-Carrier
- Nestlé Institute of Health Sciences (NIHS), Campus École Polytechnique Fédérale de Lausanne, École Polytechnique Fédérale de Lausanne Innovation Park, Lausanne, Switzerland
| | - Eugenia Migliavacca
- Nestlé Institute of Health Sciences (NIHS), Campus École Polytechnique Fédérale de Lausanne, École Polytechnique Fédérale de Lausanne Innovation Park, Lausanne, Switzerland
| | - Michelle Rozo
- Department of Embryology, Carnegie Institution of Washington, Baltimore, USA
| | - Sonia Karaz
- Nestlé Institute of Health Sciences (NIHS), Campus École Polytechnique Fédérale de Lausanne, École Polytechnique Fédérale de Lausanne Innovation Park, Lausanne, Switzerland
| | - Guillaume Jacot
- Nestlé Institute of Health Sciences (NIHS), Campus École Polytechnique Fédérale de Lausanne, École Polytechnique Fédérale de Lausanne Innovation Park, Lausanne, Switzerland
| | - Manuel Schmidt
- Leibniz Institute for Age Research, Fritz Lipmann Institute, Jena, Germany
| | - Liangji Li
- Department of Embryology, Carnegie Institution of Washington, Baltimore, USA
| | - Sylviane Metairon
- Nestlé Institute of Health Sciences (NIHS), Campus École Polytechnique Fédérale de Lausanne, École Polytechnique Fédérale de Lausanne Innovation Park, Lausanne, Switzerland
| | - Frederic Raymond
- Nestlé Institute of Health Sciences (NIHS), Campus École Polytechnique Fédérale de Lausanne, École Polytechnique Fédérale de Lausanne Innovation Park, Lausanne, Switzerland
| | - Umji Lee
- Nestlé Institute of Health Sciences (NIHS), Campus École Polytechnique Fédérale de Lausanne, École Polytechnique Fédérale de Lausanne Innovation Park, Lausanne, Switzerland
| | - Federico Sizzano
- Nestlé Institute of Health Sciences (NIHS), Campus École Polytechnique Fédérale de Lausanne, École Polytechnique Fédérale de Lausanne Innovation Park, Lausanne, Switzerland
| | - David H Wilson
- Sprott Center for Stem Cell Research, Ottawa Hospital Research Institute Regenerative Medicine Program, Ottawa, Canada.,Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Canada
| | - Nicolas A Dumont
- Sprott Center for Stem Cell Research, Ottawa Hospital Research Institute Regenerative Medicine Program, Ottawa, Canada.,Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Canada
| | - Alessio Palini
- Nestlé Institute of Health Sciences (NIHS), Campus École Polytechnique Fédérale de Lausanne, École Polytechnique Fédérale de Lausanne Innovation Park, Lausanne, Switzerland
| | - Reinhard Fässler
- Department of Molecular Medicine, Max Planck Institute of Biochemistry, Martinsried, Germany
| | - Pascal Steiner
- Nestlé Institute of Health Sciences (NIHS), Campus École Polytechnique Fédérale de Lausanne, École Polytechnique Fédérale de Lausanne Innovation Park, Lausanne, Switzerland
| | - Patrick Descombes
- Nestlé Institute of Health Sciences (NIHS), Campus École Polytechnique Fédérale de Lausanne, École Polytechnique Fédérale de Lausanne Innovation Park, Lausanne, Switzerland
| | - Michael A Rudnicki
- Sprott Center for Stem Cell Research, Ottawa Hospital Research Institute Regenerative Medicine Program, Ottawa, Canada.,Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Canada
| | - Chen-Ming Fan
- Department of Embryology, Carnegie Institution of Washington, Baltimore, USA
| | - Julia von Maltzahn
- Leibniz Institute for Age Research, Fritz Lipmann Institute, Jena, Germany
| | - Jerome N Feige
- Nestlé Institute of Health Sciences (NIHS), Campus École Polytechnique Fédérale de Lausanne, École Polytechnique Fédérale de Lausanne Innovation Park, Lausanne, Switzerland
| | - C Florian Bentzinger
- Nestlé Institute of Health Sciences (NIHS), Campus École Polytechnique Fédérale de Lausanne, École Polytechnique Fédérale de Lausanne Innovation Park, Lausanne, Switzerland
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150
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