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Zhang J, Yu H, Man M, Hu L. Aging in the dermis: Fibroblast senescence and its significance. Aging Cell 2024; 23:e14054. [PMID: 38040661 PMCID: PMC10861215 DOI: 10.1111/acel.14054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Revised: 10/29/2023] [Accepted: 11/15/2023] [Indexed: 12/03/2023] Open
Abstract
Skin aging is characterized by changes in its structural, cellular, and molecular components in both the epidermis and dermis. Dermal aging is distinguished by reduced dermal thickness, increased wrinkles, and a sagging appearance. Due to intrinsic or extrinsic factors, accumulation of excessive reactive oxygen species (ROS) triggers a series of aging events, including imbalanced extracellular matrix (ECM) homeostasis, accumulation of senescent fibroblasts, loss of cell identity, and chronic inflammation mediated by senescence-associated secretory phenotype (SASP). These events are regulated by signaling pathways, such as nuclear factor erythroid 2-related factor 2 (Nrf2), mechanistic target of rapamycin (mTOR), transforming growth factor beta (TGF-β), and insulin-like growth factor 1 (IGF-1). Senescent fibroblasts can induce and accelerate age-related dysfunction of other skin cells and may even cause systemic inflammation. In this review, we summarize the role of dermal fibroblasts in cutaneous aging and inflammation. Moreover, the underlying mechanisms by which dermal fibroblasts influence cutaneous aging and inflammation are also discussed.
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Affiliation(s)
- Jing Zhang
- Immunology Department, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education)Tianjin Medical UniversityTianjinChina
| | - Haoyue Yu
- Immunology Department, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education)Tianjin Medical UniversityTianjinChina
| | - Mao‐Qiang Man
- Dermatology HospitalSouthern Medical UniversityGuangdongChina
- Department of DermatologyUniversity of California San Francisco and Veterans Affairs Medical CenterSan FranciscoCaliforniaUSA
| | - Lizhi Hu
- Immunology Department, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education)Tianjin Medical UniversityTianjinChina
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2
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Tarbashevich K, Ermlich L, Wegner J, Pfeiffer J, Raz E. The mitochondrial protein Sod2 is important for the migration, maintenance, and fitness of germ cells. Front Cell Dev Biol 2023; 11:1250643. [PMID: 37954204 PMCID: PMC10639133 DOI: 10.3389/fcell.2023.1250643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 10/16/2023] [Indexed: 11/14/2023] Open
Abstract
To maintain a range of cellular functions and to ensure cell survival, cells must control their levels of reactive oxygen species (ROS). The main source of these molecules is the mitochondrial respiration machinery, and the first line of defense against these toxic substances is the mitochondrial enzyme superoxide dismutase 2 (Sod2). Thus, investigating early expression patterns and functions of this protein is critical for understanding how an organism develops ways to protect itself against ROS and enhance tissue fitness. Here, we report on expression pattern and function of zebrafish Sod2, focusing on the role of the protein in migration and maintenance of primordial germ cells during early embryonic development. We provide evidence that Sod2 is involved in purifying selection of vertebrate germ cells, which can contribute to the fitness of the organism in the following generations.
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Affiliation(s)
- Katsiaryna Tarbashevich
- Institute of Cell Biology, Center for Molecular Biology of Inflammation (ZMBE), Muenster, Germany
| | - Laura Ermlich
- Institute of Cell Biology, Center for Molecular Biology of Inflammation (ZMBE), Muenster, Germany
| | - Julian Wegner
- Institute of Cell Biology, Center for Molecular Biology of Inflammation (ZMBE), Muenster, Germany
| | - Jana Pfeiffer
- Institute of Cell Biology, Center for Molecular Biology of Inflammation (ZMBE), Muenster, Germany
| | - Erez Raz
- Institute of Cell Biology, Center for Molecular Biology of Inflammation (ZMBE), Muenster, Germany
- Max Planck Institute for Molecular Biomedicine, Münster, Germany
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3
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da Cruz IBM, de Afonso Bonotto NC, Turra BO, Teixeira CF, Azzolin VF, Ribeiro EAM, Piccoli JDCE, Barbisan F. Rotenone-exposure as cytofunctional aging model of human dermal fibroblast prior replicative senescence. Toxicol In Vitro 2023:105637. [PMID: 37394047 DOI: 10.1016/j.tiv.2023.105637] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Revised: 06/26/2023] [Accepted: 06/29/2023] [Indexed: 07/04/2023]
Abstract
Rotenone (Ro), causes superoxide imbalance by inhibiting complex I of the mitochondrial electron transport chain, being able to serve as a model for functional skin aging by inducing cytofunctional changes in dermal fibroblasts prior to proliferative senescence. To test this hypothesis, we conducted an initial protocol to select a concentration of Ro (0.5, 1, 1.5, 2, 2.5, and 3 μM) that would induce the highest levels of the aging marker beta-galactosidase (β-gal) in human dermal HFF-1 fibroblasts after 72 h of culture, as well as a moderate increase in apoptosis and partial G1 arrestment. We evaluated whether the selected concentration (1 μM) differentially modulated oxidative and cytofunctional markers of fibroblasts. Ro 1.0 μM increased β-gal levels and apoptosis frequency, decreased the frequency of S/G2 cells, induced higher levels of oxidative markers, and presented a genotoxic effect. Fibroblasts exposed to Ro showed lower mitochondrial activity, extracellular collagen deposition, and fewer fibroblast cytoplasmic connections than controls. Ro triggered overexpression of the gene associated with aging (MMP-1), downregulation genes of collagen production (COL1A, FGF-2), and cellular growth/regeneration (FGF-7). The 1 μM concentration of Ro could serve as an experimental model for functional aging fibroblasts prior to replicative senescence. It could be used to identify causal aging mechanisms and strategies to delay skin aging events.
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Affiliation(s)
- Ivana Beatrice Mânica da Cruz
- Postgraduate Program of Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil; Postgraduate Program of em Gerontology, Federal University of Santa Maria, Santa Maria, RS, Brazil; Santa Maria, RS, Brazil d Open University of the Third Age, State University of Amazonas, Manaus, AM, Brazil
| | - Nathália Cardoso de Afonso Bonotto
- Postgraduate Program of Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil; Postgraduate Program of em Gerontology, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Bárbara Osmarin Turra
- Postgraduate Program of Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil; Santa Maria, RS, Brazil d Open University of the Third Age, State University of Amazonas, Manaus, AM, Brazil
| | - Cibele Ferreira Teixeira
- Postgraduate Program of Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Verônica Farina Azzolin
- Postgraduate Program of em Gerontology, Federal University of Santa Maria, Santa Maria, RS, Brazil; Santa Maria, RS, Brazil d Open University of the Third Age, State University of Amazonas, Manaus, AM, Brazil
| | - Ednea Aguiar Maia Ribeiro
- Santa Maria, RS, Brazil d Open University of the Third Age, State University of Amazonas, Manaus, AM, Brazil
| | | | - Fernanda Barbisan
- Postgraduate Program of Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil; Postgraduate Program of em Gerontology, Federal University of Santa Maria, Santa Maria, RS, Brazil; Santa Maria, RS, Brazil d Open University of the Third Age, State University of Amazonas, Manaus, AM, Brazil.
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4
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Wang Z, Wang Q, Zhong W, Liang F, Guo Y, Wang Y, Wang Z. Moisturizing and Antioxidant Effects of Artemisia argyi Essence Liquid in HaCaT Keratinocytes. Int J Mol Sci 2023; 24:ijms24076809. [PMID: 37047782 PMCID: PMC10095007 DOI: 10.3390/ijms24076809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 03/30/2023] [Accepted: 04/02/2023] [Indexed: 04/09/2023] Open
Abstract
Artemisia argyi essence liquid (AL) is an aqueous solution extracted from A. argyi using CO2 supercritical fluid extraction. There have been few investigations on the aqueous solution of A. argyi extracted via CO2 supercritical fluid extraction. This study aimed to explore the moisturizing and antioxidant effects of AL and to clarify the potential mechanism underlying those effects. Expression levels of skin moisture-related components and the H2O2-induced oxidative stress responses in human keratinocyte cells were measured via quantitative RT-qPCR, Western blot, and immunofluorescence. Our results showed that AL enhanced the expression of AQP3 and HAS2 by activating the EGFR-mediated STAT3 and MAPK signaling pathways. In addition, AL can play an antioxidant role by inhibiting the NF-κB signaling pathway and activating the Nrf2/HO-1 signaling pathway, consequently increasing the expression of antioxidant enzymes (GPX1, SOD2) and decreasing the production of reactive oxygen species (ROS). This study revealed that AL could be used as a potential moisturizing and antioxidant cosmetic ingredient.
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Affiliation(s)
- Ziwen Wang
- Guangdong Provincial Key Laboratory of Advanced Drug Delivery Systems and Guangdong Provincial Engineering Center of Topical Precise Drug Delivery System, School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Qiaoli Wang
- Department of Cell Biology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Wenshen Zhong
- Guangdong Provincial Key Laboratory of Advanced Drug Delivery Systems and Guangdong Provincial Engineering Center of Topical Precise Drug Delivery System, School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Feng Liang
- Department of Cell Biology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Yuying Guo
- Department of Cell Biology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Yifei Wang
- Department of Cell Biology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Zhiping Wang
- Guangdong Provincial Key Laboratory of Advanced Drug Delivery Systems and Guangdong Provincial Engineering Center of Topical Precise Drug Delivery System, School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
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5
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Wang C, Alfano R, Reimann B, Hogervorst J, Bustamante M, De Vivo I, Plusquin M, Nawrot TS, Martens DS. Genetic regulation of newborn telomere length is mediated and modified by DNA methylation. Front Genet 2022; 13:934277. [PMID: 36267401 PMCID: PMC9576874 DOI: 10.3389/fgene.2022.934277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 09/06/2022] [Indexed: 11/23/2022] Open
Abstract
Telomere length at birth determines later life telomere length and potentially predicts ageing-related diseases. However, the genetic and epigenetic settings of telomere length in newborns have not been analyzed. In addition, no study yet has reported how the interplay between genetic variants and genome-wide cytosine methylation explains the variation in early-life telomere length. In this study based on 281 mother-newborn pairs from the ENVIRONAGE birth cohort, telomere length and whole-genome DNA methylation were assessed in cord blood and 26 candidate single nucleotide polymorphism related to ageing or telomere length were genotyped. We identified three genetic variants associated with cord blood telomere length and 57 cis methylation quantitative trait loci (cis-mQTLs) of which 22 mQTLs confirmed previous findings and 35 were newly identified. Five SNPs were found to have significant indirect effects on cord blood telomere length via the mediating CpGs. The association between rs911874 (SOD2) and newborn telomere length was modified by nearby DNA methylation indicated by a significant statistical interaction. Our results suggest that DNA methylation in cis might have a mediation or modification effect on the genetic difference in newborn telomere length. This novel approach warrants future follow-up studies that are needed to further confirm and extend these findings.
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Affiliation(s)
- Congrong Wang
- Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium
| | - Rossella Alfano
- Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium
| | - Brigitte Reimann
- Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium
| | | | - Mariona Bustamante
- ISGlobal, Barcelona, Spain
- Universitat Pompeu Fabra, Barcelona, Spain
- CIBER de Epidemiología y Salud Pública, Madrid, Spain
- Center for Genomic Regulation, Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Immaculata De Vivo
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA, United States
- Program in Genetic Epidemiology and Statistical Genetics, Harvard School of Public Health, Boston, MA, United States
| | - Michelle Plusquin
- Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium
| | - Tim S. Nawrot
- Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium
- Department of Public Health and Primary Care, Leuven University, Leuven, Belgium
| | - Dries S. Martens
- Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium
- *Correspondence: Dries S. Martens,
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6
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Biswas B, Goswami R. Differential gene expression analysis in 1,25(OH)2D3 treated human monocytes establishes link between AIDS progression, neurodegenerative disorders, and aging. Meta Gene 2021. [DOI: 10.1016/j.mgene.2021.100886] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
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7
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Monteiro E Silva SA, Souza JGD, Melo PS, Moreno IAM, Alencar SM, Lopez RFV, Ricci Leonardi G. Target action of antioxidants using iontophoresis. J Cosmet Dermatol 2020; 20:664-676. [PMID: 32573989 DOI: 10.1111/jocd.13560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 06/10/2020] [Indexed: 11/27/2022]
Abstract
BACKGROUND The use of antioxidants in applications for topical use seems promising, however, many studies must be performed to ensure processes and products that can effectively bring benefits to combat the action of free radicals in the skin. For topical antioxidants to be effective against free radicals from the skin, it is essential that the antioxidants compounds permeate the different skin layers, to reach deeper layers of the epidermis in active form and stay there for a sufficient time to cause the beneficial effects. AIM This work aimed to evaluate the antioxidant action of formulations with phenolic compounds as well as to comprehend the skin retention profile of these actives. METHODS The antioxidant potential was recognized with isolated phenolic acids (gallic, caffeic, and ferulic acid) or in combinations, using different in vitro methods (DPPH ABTS , FRAP , β-carotene/linoleic acid system and ORAC). The skin retention study was performed through in vitro assay with Franz's diffusion cell associating, or not, the cathodic iontophoresis. RESULTS Gallic acid showed the greatest antioxidant activity and was selected for a study of skin permeation following gel application to porcine skin, with or without cathodic iontophoresis. Gallic acid retention in deeper skin layers was promoted by iontophoresis, and increased skin antioxidant activity was detected after only 20 min of iontophoresis. The present study demonstrated the importance of polymeric gelling agents for optimizing the antioxidant activity. CONCLUSION The cathodic iontophoresis represents a promising strategy to promote a target action of antioxidants in the skin.
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Affiliation(s)
| | | | - Priscilla Siqueira Melo
- Biochemistry Department, Luiz de Queiroz College of Agriculture, University of São Paulo - USP, Piracicaba, Brazil
| | | | - Severino Matias Alencar
- Biochemistry Department, Luiz de Queiroz College of Agriculture, University of São Paulo - USP, Piracicaba, Brazil
| | | | - Gislaine Ricci Leonardi
- Medicine Department, Federal University of São Paulo, São Paulo, Brazil.,Faculty of Pharmaceutical Science, State University of Campinas, UNICAMP, Campinas, Brazil
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8
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Stout R, Birch-Machin M. Mitochondria's Role in Skin Ageing. BIOLOGY 2019; 8:E29. [PMID: 31083540 PMCID: PMC6627661 DOI: 10.3390/biology8020029] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 02/05/2019] [Accepted: 02/07/2019] [Indexed: 12/12/2022]
Abstract
Skin ageing is the result of a loss of cellular function, which can be further accelerated by external factors. Mitochondria have important roles in skin function, and mitochondrial damage has been found to accumulate with age in skin cells, but also in response to solar light and pollution. There is increasing evidence that mitochondrial dysfunction and oxidative stress are key features in all ageing tissues, including skin. This is directly linked to skin ageing phenotypes: wrinkle formation, hair greying and loss, uneven pigmentation and decreased wound healing. The loss of barrier function during skin ageing increases susceptibility to infection and affects wound healing. Therefore, an understanding of the mechanisms involved is important clinically and also for the development of antiageing skin care products.
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Affiliation(s)
- Roisin Stout
- Dermatological Sciences, Institute of Cellular Medicine, Medical School, Newcastle University, Newcastle upon Tyne NE2 4HH, UK.
| | - Mark Birch-Machin
- Dermatological Sciences, Institute of Cellular Medicine, Medical School, Newcastle University, Newcastle upon Tyne NE2 4HH, UK.
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9
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Gallic Acid-Loaded Gel Formulation Combats Skin Oxidative Stress: Development, Characterization and Ex Vivo Biological Assays. Polymers (Basel) 2017; 9:polym9090391. [PMID: 30965694 PMCID: PMC6418529 DOI: 10.3390/polym9090391] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 08/14/2017] [Accepted: 08/22/2017] [Indexed: 11/17/2022] Open
Abstract
Oxidative stress, which is a result of overproduction and accumulation of free radicals, is the main cause of several skin degenerative diseases, such as aging. Polyphenols, such as gallic acid, are an important class of naturally occurring antioxidants. They have emerged as strong antioxidants that can be used as active cosmetics. The purpose of this study was to develop a gallic acid-loaded cosmetic gel formulation and characterize it using rheological, mechanical, and bioadhesive tests. Its antioxidant effect in the stratum corneum was evaluated by a non-invasive method. According to the characterization tests, the formulation exhibited skin adhesiveness and pseudoplastic behavior without thixotropy, rendering it suitable for use as a cosmetic formulation. Furthermore, the non-invasive method indicated the antioxidant effect in the stratum corneum, with the global lipid peroxide reduction being 33.97 ± 11.66%. Thus, we were able to develop a promising gallic acid-loaded gel formulation that could reduce lipid peroxides and thus combat skin oxidative stress.
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10
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Sosulski ML, Gongora R, Feghali-Bostwick C, Lasky JA, Sanchez CG. Sirtuin 3 Deregulation Promotes Pulmonary Fibrosis. J Gerontol A Biol Sci Med Sci 2017; 72:595-602. [PMID: 27522058 DOI: 10.1093/gerona/glw151] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Accepted: 07/12/2016] [Indexed: 01/26/2023] Open
Abstract
Oxidative stress leads to alveolar epithelial cell injury and fibroblast-myofibroblast differentiation (FMD), key events in the pathobiology of pulmonary fibrosis (PF). Sirtuin 3 (SIRT3) is a mitochondrial protein deacetylase regulator of antioxidant response and mitochondrial homeostasis. Here, we demonstrate reduced SIRT3 expression in the lungs of old mice compared to young mice, as well as in two murine models of PF. The analysis of the pattern of SIRT3 expression in the lungs of patients with PF revealed low SIRT3 staining within the fibrotic regions. We also demonstrated, using murine models of PF and human lung fibroblasts, that reduced SIRT3 expression in response to transforming growth factor beta 1 (TGFβ1) promotes acetylation (inactivation) of major oxidative stress response regulators, such as SOD2 and isocitrate dehydrogenase 2. Reduction of SIRT3 in human lung fibroblasts promoted FMD. By contrast, overexpression of SIRT3 attenuated TGFβ1-mediated FMD and significantly reduced the levels of SMAD family member 3 (SMAD3). Resveratrol induced SIRT3 expression and ameliorated acetylation changes induced by TGFβ1. We demonstrated that SIRT3-deficient mice are more susceptible to PF compared to control mice, and concomitantly exhibit enhanced SMAD3 expression. Collectively, these data define a SIRT3/TGFβ1 interaction during aging that may play a significant role in the pathobiology of PF.
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Affiliation(s)
- Meredith L Sosulski
- Division of Pulmonary Diseases, Critical Care and Environmental Medicine, Department of Medicine, Tulane University Health Sciences Center, New Orleans, Louisiana
| | - Rafael Gongora
- Division of Pulmonary Diseases, Critical Care and Environmental Medicine, Department of Medicine, Tulane University Health Sciences Center, New Orleans, Louisiana
| | - Carol Feghali-Bostwick
- Division of Rheumatology and Immunology, Medical University of South Carolina, Charleston
| | - Joseph A Lasky
- Division of Pulmonary Diseases, Critical Care and Environmental Medicine, Department of Medicine, Tulane University Health Sciences Center, New Orleans, Louisiana
| | - Cecilia G Sanchez
- Division of Pulmonary Diseases, Critical Care and Environmental Medicine, Department of Medicine, Tulane University Health Sciences Center, New Orleans, Louisiana
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11
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Lecas S, Boursier E, Fitoussi R, Vié K, Momas I, Seta N, Achard S. In vitro model adapted to the study of skin ageing induced by air pollution. Toxicol Lett 2016; 259:60-68. [DOI: 10.1016/j.toxlet.2016.07.026] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 07/14/2016] [Accepted: 07/21/2016] [Indexed: 12/23/2022]
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12
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Zou X, Santa-Maria CA, O'Brien J, Gius D, Zhu Y. Manganese Superoxide Dismutase Acetylation and Dysregulation, Due to Loss of SIRT3 Activity, Promote a Luminal B-Like Breast Carcinogenic-Permissive Phenotype. Antioxid Redox Signal 2016; 25:326-36. [PMID: 26935174 PMCID: PMC4991597 DOI: 10.1089/ars.2016.6641] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
SIGNIFICANCE Breast cancer is the most common nondermatologic malignancy among women in the United States, among which endocrine receptor-positive breast cancer accounts for up to 80%. Endocrine receptor-positive breast cancers can be categorized molecularly into luminal A and B subtypes, of which the latter is an aggressive form that is less responsive to endocrine therapy with inferior prognosis. RECENT ADVANCES Sirtuin, an aging-related gene involved in mitochondrial metabolism, is associated with life span, and more importantly, murine models lacking Sirt3 spontaneously develop tumors that resemble human luminal B breast cancer. Furthermore, these tumors exhibit aberrant manganese superoxide dismutase (MnSOD) acetylation at lysine 68 and lysine 122 and have abnormally high reactive oxygen species (ROS) levels, which have been observed in many types of breast cancer. CRITICAL ISSUES The mechanism of how luminal B breast cancer develops resistance to endocrine therapy remains unclear. MnSOD, a primary mitochondrial detoxification enzyme, functions by scavenging excessive ROS from the mitochondria and maintaining mitochondrial and cellular homeostasis. Sirt3, a mitochondrial fidelity protein, can regulate the activity of MnSOD through deacetylation. In this study, we discuss a possible mechanism of how loss of SIRT3-guided MnSOD acetylation results in endocrine therapy resistance of human luminal B breast cancer. FUTURE DIRECTIONS Acetylation of MnSOD and other mitochondrial proteins, due to loss of SIRT3, may explain the connection between ROS and development of luminal B breast cancer and how luminal B breast cancer becomes resistant to endocrine therapy. Antioxid. Redox Signal. 25, 326-336.
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Affiliation(s)
- Xianghui Zou
- 1 Department of Radiation Oncology, Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University , Chicago, Illinois.,2 Department of Pharmacology, Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University , Chicago, Illinois.,3 Driskill Graduate Program in Life Science, Feinburg School of Medicine, Northwestern University , Chicago, Illinois
| | - Cesar Augusto Santa-Maria
- 4 Division of Medical Oncology, Department of Medicine, Feinberg School of Medicine, Northwestern University , Chicago, Illinois
| | - Joseph O'Brien
- 1 Department of Radiation Oncology, Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University , Chicago, Illinois.,2 Department of Pharmacology, Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University , Chicago, Illinois
| | - David Gius
- 1 Department of Radiation Oncology, Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University , Chicago, Illinois.,2 Department of Pharmacology, Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University , Chicago, Illinois
| | - Yueming Zhu
- 1 Department of Radiation Oncology, Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University , Chicago, Illinois.,2 Department of Pharmacology, Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University , Chicago, Illinois
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13
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Breitenbach JS, Rinnerthaler M, Trost A, Weber M, Klausegger A, Gruber C, Bruckner D, Reitsamer HA, Bauer JW, Breitenbach M. Transcriptome and ultrastructural changes in dystrophic Epidermolysis bullosa resemble skin aging. Aging (Albany NY) 2016; 7:389-411. [PMID: 26143532 PMCID: PMC4505166 DOI: 10.18632/aging.100755] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The aging process of skin has been investigated recently with respect to mitochondrial function and oxidative stress. We have here observed striking phenotypic and clinical similarity between skin aging and recessive dystrophic Epidermolysis bullosa (RDEB), which is caused by recessive mutations in the gene coding for collagen VII, COL7A1. Ultrastructural changes, defects in wound healing, and inflammation markers are in part shared with aged skin. We have here compared the skin transcriptomes of young adults suffering from RDEB with that of sex‐ and age‐matched healthy probands. In parallel we have compared the skin transcriptome of healthy young adults with that of elderly healthy donors. Quite surprisingly, there was a large overlap of the two gene lists that concerned a limited number of functional protein families. Most prominent among the proteins found are a number of proteins of the cornified envelope or proteins mechanistically involved in cornification and other skin proteins. Further, the overlap list contains a large number of genes with a known role in inflammation. We are documenting some of the most prominent ultrastructural and protein changes by immunofluorescence analysis of skin sections from patients, old individuals, and healthy controls.
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Affiliation(s)
- Jenny S Breitenbach
- Department of Dermatology and EB House Austria, Paracelsus Medical University, Salzburg, Austria
| | - Mark Rinnerthaler
- Fachbereich Zellbiologie der Universität Salzburg, Salzburg, Austria
| | - Andrea Trost
- University Clinic of Ophthalmology and Optometry, Research Program for Ophthalmology and Glaucoma Research, Paracelsus Medical University, Salzburg, Austria
| | - Manuela Weber
- Fachbereich Zellbiologie der Universität Salzburg, Salzburg, Austria
| | - Alfred Klausegger
- Department of Dermatology and EB House Austria, Paracelsus Medical University, Salzburg, Austria
| | - Christina Gruber
- Department of Dermatology and EB House Austria, Paracelsus Medical University, Salzburg, Austria
| | - Daniela Bruckner
- University Clinic of Ophthalmology and Optometry, Research Program for Ophthalmology and Glaucoma Research, Paracelsus Medical University, Salzburg, Austria
| | - Herbert A Reitsamer
- University Clinic of Ophthalmology and Optometry, Research Program for Ophthalmology and Glaucoma Research, Paracelsus Medical University, Salzburg, Austria
| | - Johann W Bauer
- Department of Dermatology and EB House Austria, Paracelsus Medical University, Salzburg, Austria
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14
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Du K, Yu Y, Zhang D, Luo W, Huang H, Chen J, Gao J, Huang C. NFκB1 (p50) suppresses SOD2 expression by inhibiting FoxO3a transactivation in a miR190/PHLPP1/Akt-dependent axis. Mol Biol Cell 2013; 24:3577-83. [PMID: 24068327 PMCID: PMC3826995 DOI: 10.1091/mbc.e13-06-0343] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
This study reports a novel function of p50 in its regulation of SOD2 transcription via an NFκB-independent pathway. p50-regulated FoxO3a phosphorylation and transactivation contributes to SOD2 transcription, and p50–down-regulated PHLPP1 translation via miR190 is responsible for activation of Akt and FoxO3a. The biological functions of nuclear factor κB1 (NFκB1; p50) have not been studied as often as those of other members of the NFκB family due to its lack of a transcriptional domain. Our recent studies showed that p50 functions as an apoptotic mediator via its inhibition of GADD45α protein degradation and increase in p53 protein translation. Here we report a novel function of p50 in its regulation of superoxide dismutase 2 (SOD2) transcription via an NFκB-independent pathway. We find that deletion of p50 in mouse embryonic fibroblasts (MEFs; p50−/−) up-regulates SOD2 expression at both protein and mRNA levels. SOD2 promoter–driven luciferase is also up-regulated in p50−/− cells compared with wild-type (WT) MEF (p50+/+) cells, suggesting p50 regulation of SOD2 at the transcriptional level. Our results also show that p50 deficiency specifically results in down-regulation of phosphorylation and increased transactivation of FoxO3a compared with WT cells. Further studies indicate that p50–down-regulated FoxO3a phosphorylation is mediated by activated Akt via up-regulation of microRNA 190 (miR190), in turn inhibiting PH domain and leucine-rich repeat protein phosphatase 1 (PHLPP1) translation. Together our studies identify a novel p50 function in the regulation of SOD2 transcription by modulating the miR190/PHLPP1/Akt-FoxO3a pathway, which provides significant insight into the physiological function of p50.
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Affiliation(s)
- Kejun Du
- Nelson Institute of Environmental Medicine, New York University School of Medicine, Tuxedo, NY 10987 Department of Occupational and Environmental Health, School of Public Health, Fourth Military Medical University, Shanxi 710032, China Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, School of Life Sciences, Wenzhou Medical College, Wenzhou, Zhejiang 325035, China
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15
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Beach A, Richard VR, Leonov A, Burstein MT, Bourque SD, Koupaki O, Juneau M, Feldman R, Iouk T, Titorenko VI. Mitochondrial membrane lipidome defines yeast longevity. Aging (Albany NY) 2013; 5:551-74. [PMID: 23924582 PMCID: PMC3765583 DOI: 10.18632/aging.100578] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2013] [Accepted: 07/16/2013] [Indexed: 12/22/2022]
Abstract
Our studies revealed that lithocholic acid (LCA), a bile acid, is a potent anti-aging natural compound that in yeast cultured under longevity-extending caloric restriction (CR) conditions acts in synergy with CR to enable a significant further increase in chronological lifespan. Here, we investigate a mechanism underlying this robust longevity-extending effect of LCA under CR. We found that exogenously added LCA enters yeast cells, is sorted to mitochondria, resides mainly in the inner mitochondrial membrane, and also associates with the outer mitochondrial membrane. LCA elicits an age-related remodeling of glycerophospholipid synthesis and movement within both mitochondrial membranes, thereby causing substantial changes in mitochondrial membrane lipidome and triggering major changes in mitochondrial size, number and morphology. In synergy, these changes in the membrane lipidome and morphology of mitochondria alter the age-related chronology of mitochondrial respiration, membrane potential, ATP synthesis and reactive oxygen species homeostasis. The LCA-driven alterations in the age-related dynamics of these vital mitochondrial processes extend yeast longevity. In sum, our findings suggest a mechanism underlying the ability of LCA to delay chronological aging in yeast by accumulating in both mitochondrial membranes and altering their glycerophospholipid compositions. We concluded that mitochondrial membrane lipidome plays an essential role in defining yeast longevity.
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Affiliation(s)
- Adam Beach
- Department of Biology, Concordia University, Montreal, Quebec H4B 1R6, Canada
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16
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Iglesias-Bartolome R, Patel V, Cotrim A, Leelahavanichkul K, Molinolo AA, Mitchell JB, Gutkind JS. mTOR inhibition prevents epithelial stem cell senescence and protects from radiation-induced mucositis. Cell Stem Cell 2012; 11:401-14. [PMID: 22958932 PMCID: PMC3477550 DOI: 10.1016/j.stem.2012.06.007] [Citation(s) in RCA: 227] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2011] [Revised: 04/10/2012] [Accepted: 06/07/2012] [Indexed: 12/27/2022]
Abstract
The integrity of the epidermis and mucosal epithelia is highly dependent on resident self-renewing stem cells, which makes them vulnerable to physical and chemical insults compromising the repopulating capacity of the epithelial stem cell compartment. This is frequently the case in cancer patients receiving radiation or chemotherapy, many of whom develop mucositis, a debilitating condition involving painful and deep mucosal ulcerations. Here, we show that inhibiting the mammalian target of rapamycin (mTOR) with rapamycin increases the clonogenic capacity of primary human oral keratinocytes and their resident self-renewing cells by preventing stem cell senescence. This protective effect of rapamycin is mediated by the increase in expression of mitochondrial superoxide dismutase (MnSOD), and the consequent inhibition of ROS formation and oxidative stress. mTOR inhibition also protects from the loss of proliferative basal epithelial stem cells upon ionizing radiation in vivo, thereby preserving the integrity of the oral mucosa and protecting from radiation-induced mucositis.
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Affiliation(s)
- Ramiro Iglesias-Bartolome
- Oral and Pharyngeal Cancer Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20852, USA
| | - Vyomesh Patel
- Oral and Pharyngeal Cancer Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20852, USA
| | - Ana Cotrim
- Molecular Physiology and Therapeutics Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland, USA
| | - Kantima Leelahavanichkul
- Oral and Pharyngeal Cancer Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20852, USA
| | - Alfredo A. Molinolo
- Oral and Pharyngeal Cancer Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20852, USA
| | - James B. Mitchell
- Radiation Biology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - J. Silvio Gutkind
- Oral and Pharyngeal Cancer Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20852, USA
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