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Vasilopoulou MA, Gioran A, Theodoropoulou M, Koutsaviti A, Roussis V, Ioannou E, Chondrogianni N. Healthspan improvement and anti-aggregation effects induced by a marine-derived structural proteasome activator. Redox Biol 2022; 56:102462. [PMID: 36095970 PMCID: PMC9482115 DOI: 10.1016/j.redox.2022.102462] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 08/28/2022] [Accepted: 08/28/2022] [Indexed: 11/15/2022] Open
Abstract
Proteasome activation has been shown to promote cellular and organismal healthspan and to protect against aggregation-related conditions, such as Alzheimer's disease (AD). Various natural compounds have been described for their proteasome activating properties but scarce data exist on marine metabolites that often possess unique chemical structures, exhibiting pronounced bioactivities with novel mechanisms of action. In this study, we have identified for the first time a marine structural proteasome activator, namely (1R,3E,6R,7Z,11S,12S)-dolabella-3,7,18-trien-6,17-olide (DBTO). DBTO activates the 20S proteasome complex in cell-free assays but also in cellulo. Continuous supplementation of human primary fibroblasts with DBTO throughout their cellular lifespan confers an improved healthspan while ameliorated health status is also observed in wild type (wt) Caenorhabditis elegans (C. elegans) nematodes supplemented with DBTO. Furthermore, treatment of various AD nematode models, as well as of human cells of neuronal origin challenged with exogenously added Aβ peptide, with DBTO results in enhanced protection against Aβ-induced proteotoxicity. In total, our results reveal the first structural proteasome activator derived from the marine ecosystem and highlight its potential as a compound that might be used for healthspan maintenance and preventive strategies against proteinopathies, such as AD. (1R,3E,6R,7Z,11S,12S)-dolabella-3,7,18-trien-6,17-olide (DBTO) is a structural proteasome activator. DBTO is the first identified marine structural proteasome activator. DBTO positively modulates cellular healthspan and organismal health status. DBTO confers protection against Aβ-induced proteotoxicity.
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2
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Vasilopoulou MΑ, Ioannou E, Roussis V, Chondrogianni N. Modulation of the ubiquitin-proteasome system by marine natural products. Redox Biol 2021; 41:101897. [PMID: 33640701 PMCID: PMC7921624 DOI: 10.1016/j.redox.2021.101897] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 02/05/2021] [Accepted: 02/10/2021] [Indexed: 02/07/2023] Open
Abstract
The ubiquitin-proteasome system (UPS) is a key player in the maintenance of cellular protein homeostasis (proteostasis). Since proteasome function declines upon aging leading to the acceleration of its progression and the manifestation of age-related pathologies, many attempts have been performed towards proteasome activation as a strategy to promote healthspan and longevity. The marine environment hosts a plethora of organisms that produce a vast array of primary and secondary metabolites, the majority of which are unique, exhibiting a wide spectrum of biological activities. The fact that these biologically important compounds are also present in edible marine organisms has sparked the interest for elucidating their potential health-related applications. In this review, we focus on the antioxidant, anti-aging, anti-aggregation and anti-photoaging properties of various marine constituents. We further discuss representatives of marine compounds classes with regard to their potential (direct or indirect) action on UPS components that could serve as UPS modulators and exert beneficial effects on conditions such as oxidative stress, aging and age-related diseases.
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Affiliation(s)
- Mary Α Vasilopoulou
- Institute of Chemical Biology, National Hellenic Research Foundation, 48 Vassileos Constantinou Ave., Athens, 11635, Greece; Department of Biochemistry and Biotechnology, University of Thessaly, Biopolis, 41500, Larisa, Greece.
| | - Efstathia Ioannou
- Section of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, Athens, 15771, Greece.
| | - Vassilios Roussis
- Section of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, Athens, 15771, Greece.
| | - Niki Chondrogianni
- Institute of Chemical Biology, National Hellenic Research Foundation, 48 Vassileos Constantinou Ave., Athens, 11635, Greece.
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3
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Xiao L, Zhang X, Chen Z, Li Y, Li B, Li L. ERK1/2 Pathway Is Involved in the Enhancement of Fatty Acids from Phaeodactylum tricornutum Extract (PTE) on Hair Follicle Cell Proliferation. BIOMED RESEARCH INTERNATIONAL 2020; 2020:2916104. [PMID: 33178821 PMCID: PMC7648671 DOI: 10.1155/2020/2916104] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 09/21/2020] [Accepted: 09/27/2020] [Indexed: 11/17/2022]
Abstract
Extractions from Phaeodactylum tricornutum have been widely studied and evaluated to various biological effects. The aim of this study was to investigate the promotional effect of P. tricornutum extract (PTE) on the ERK1/2 signaling pathway involved in hair follicle cell proliferation. In order to illuminate the enhancement of PTE on hair growth by promoting proliferation of hair follicle cells, the activities of human hair follicle outer root sheath cell (HFORSC), human hair follicle germinal matrix cells (HFGMC), and hair epithelial melanocytes (HEM) were observed under PET treatment. Levels of keratins, PKCζ, ERK1/2, and p38 MAPK in hair follicle cells were determined by Western blotting to illustrate the mechanisms of PTE effects on hair growth. Analyzed by GC-MS, the main polyunsaturated fatty acids which were 9.43% of total fatty acids in PTE were linolenic acid, linoleic acid, eicosapentaenoic acid, and docosahexaenoic acid. Melanin content and tyrosinase activity in HEM were measured. The results showed that PTE exhibited remarkable enhancement on cell proliferation. Melanin production was inhibited by PTE treatment, while keratin-14, keratin-15, and keratin-17 levels on hair follicle cells were elevated at different concentrations. The promotions of ERK1/2 and p38 MAPK levels indicated that the ERK1/2 signaling pathway is involved in the proliferation of hair follicle cells. These results are the evidence that PTE potentially deserves further study as a new natural candidate for hair care applications.
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Affiliation(s)
- Lei Xiao
- School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, Guangzhou 510640, China
- Infinitus (China) Co., China
| | - Xia Zhang
- School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, Guangzhou 510640, China
| | - Zhiyi Chen
- Sericultural & Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences, Key Laboratory of Functional Foods, Ministry of Agriculture and Rural Affairs, Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou 510610, China
| | - Yuting Li
- School of Chemical Engineering and Energy Technology, Dongguan University of Technology, College Road 1, Dongguan 523808, China
| | - Bing Li
- School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, Guangzhou 510640, China
| | - Lin Li
- School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, Guangzhou 510640, China
- School of Chemical Engineering and Energy Technology, Dongguan University of Technology, College Road 1, Dongguan 523808, China
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4
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Andrade MJ, Van Lonkhuyzen DR, Upton Z, Satyamoorthy K. Unravelling the insulin-like growth factor I-mediated photoprotection of the skin. Cytokine Growth Factor Rev 2019; 52:45-55. [PMID: 31767341 DOI: 10.1016/j.cytogfr.2019.11.004] [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: 10/17/2019] [Revised: 11/12/2019] [Accepted: 11/14/2019] [Indexed: 10/25/2022]
Abstract
Chronic exposure of human skin to solar ultraviolet radiation (UVR) induces a range of biological reactions which may directly or indirectly lead to the development of skin cancer. In order to overcome these damaging effects of UVR and to reduce photodamage, the skin's endogenous defence system functions in concert with the various exogenous photoprotectors. Growth factors, particularly insulin-like growth factor-I (IGF-I), produced within the body as a result of cellular interaction in response to UVR demonstrates photoprotective properties in human skin. This review summarises the impact of UVR-induced photolesions on human skin, discusses various endogenous as well as exogenous approaches of photoprotection described to date and explains how IGF-I mediates UVR photoprotective responses at the cellular and mitochondrial level. Further, we describe the current interventions using growth factors and propose how the knowledge of the IGF-I photoprotection signalling cascades may direct the development of improved UVR protection and remedial strategies.
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Affiliation(s)
- Melisa J Andrade
- Department of Cell and Molecular Biology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, India; Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia
| | - Derek R Van Lonkhuyzen
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia
| | - Zee Upton
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia; Institute of Medical Biology, A⁎STAR, Singapore
| | - Kapaettu Satyamoorthy
- Department of Cell and Molecular Biology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, India.
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5
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Bertolin G, Bulteau AL, Alves-Guerra MC, Burel A, Lavault MT, Gavard O, Le Bras S, Gagné JP, Poirier GG, Le Borgne R, Prigent C, Tramier M. Aurora kinase A localises to mitochondria to control organelle dynamics and energy production. eLife 2018; 7:38111. [PMID: 30070631 PMCID: PMC6140714 DOI: 10.7554/elife.38111] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 08/01/2018] [Indexed: 12/18/2022] Open
Abstract
Many epithelial cancers show cell cycle dysfunction tightly correlated with the overexpression of the serine/threonine kinase Aurora A (AURKA). Its role in mitotic progression has been extensively characterised, and evidence for new AURKA functions emerges. Here, we reveal that AURKA is located and imported in mitochondria in several human cancer cell lines. Mitochondrial AURKA impacts on two organelle functions: mitochondrial dynamics and energy production. When AURKA is expressed at endogenous levels during interphase, it induces mitochondrial fragmentation independently from RALA. Conversely, AURKA enhances mitochondrial fusion and ATP production when it is over-expressed. We demonstrate that AURKA directly regulates mitochondrial functions and that AURKA over-expression promotes metabolic reprogramming by increasing mitochondrial interconnectivity. Our work paves the way to anti-cancer therapeutics based on the simultaneous targeting of mitochondrial functions and AURKA inhibition. Structures called mitochondria power cells by turning oxygen and sugar into chemical energy. Each cell can have thousands of mitochondria, which work together to supply changing energy demands. They can fuse together or break apart, forming networks that change size and produce different amounts of energy. Getting the balance right is crucial; if energy levels are too low, the cell will not be able to grow and divide. If energy levels are too high, the cell can grow at a faster rate, which can contribute to the cell becoming cancerous. Although we know that mitochondria provide energy, it is not clear how they communicate to fine-tune the supply. Some clues come from cancer cells that seem dependent on their mitochondria for survival. In these cells, levels of a protein called AURKA are higher than normal. AURKA helps cells to divide, and it interacts with many different proteins. This complexity makes it difficult to work out exactly what AURKA does, but it is possible that it plays a role in energy supply. Bertolin et al. have now investigated whether mitochondria use AURKA to communicate inside human breast cancer cells. Tagging AURKA proteins with a fluorescent marker revealed that it accumulates inside mitochondria. Once it gets there, AURKA changes the shape of the mitochondria, which has dramatic effects on their capacity to produce energy. At normal levels, AURKA causes the mitochondria to fragment, breaking apart into smaller pieces. This maintains their energy output at a normal level. If AURKA levels are too high, the mitochondria fuse together and produce more energy. This means AURKA could help to fuel fast-growing cancer cells. Current drugs that aim to treat cancer by blocking the activity of AURKA show poor results. This is partly due to the fact that the protein has so many different roles in the cell. Finding that AURKA affects mitochondria is the first step in understanding one of its unknown roles. It also suggests the possibility of developing new drugs to change how mitochondria make energy in cancer cells that contain high levels of AURKA.
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Affiliation(s)
- Giulia Bertolin
- CNRS, UMR 6290, Rennes, France.,Université de Rennes 1, UBL, Genetics and Development Institute of Rennes (IGDR), Rennes, France
| | - Anne-Laure Bulteau
- ENS de Lyon, Lyon, France.,CNRS UMR 5242, Lyon, France.,INRA USC 1370, Lyon, France
| | - Marie-Clotilde Alves-Guerra
- Inserm, U1016, Institut Cochin, Paris, France.,CNRS, UMR 8104, Paris, France.,Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Agnes Burel
- Microscopy Rennes Imaging Centre, SFR Biosit, UMS CNRS 3480- US INSERM 018, Université de Rennes, Rennes, France
| | - Marie-Thérèse Lavault
- Microscopy Rennes Imaging Centre, SFR Biosit, UMS CNRS 3480- US INSERM 018, Université de Rennes, Rennes, France
| | - Olivia Gavard
- CNRS, UMR 6290, Rennes, France.,Université de Rennes 1, UBL, Genetics and Development Institute of Rennes (IGDR), Rennes, France.,Equipes labélisées Ligue Contre Le Cancer, Rennes, France.,Centre de recherche du CHU de Québec, Faculté de Médecine, Université Laval, Québec, Canada
| | - Stephanie Le Bras
- CNRS, UMR 6290, Rennes, France.,Université de Rennes 1, UBL, Genetics and Development Institute of Rennes (IGDR), Rennes, France
| | - Jean-Philippe Gagné
- Centre de recherche du CHU de Québec, Faculté de Médecine, Université Laval, Québec, Canada
| | - Guy G Poirier
- Centre de recherche du CHU de Québec, Faculté de Médecine, Université Laval, Québec, Canada
| | - Roland Le Borgne
- CNRS, UMR 6290, Rennes, France.,Université de Rennes 1, UBL, Genetics and Development Institute of Rennes (IGDR), Rennes, France.,Equipes labélisées Ligue Contre Le Cancer, Rennes, France
| | - Claude Prigent
- CNRS, UMR 6290, Rennes, France.,Université de Rennes 1, UBL, Genetics and Development Institute of Rennes (IGDR), Rennes, France.,Equipes labélisées Ligue Contre Le Cancer, Rennes, France
| | - Marc Tramier
- CNRS, UMR 6290, Rennes, France.,Université de Rennes 1, UBL, Genetics and Development Institute of Rennes (IGDR), Rennes, France.,Microscopy Rennes Imaging Centre, SFR Biosit, UMS CNRS 3480- US INSERM 018, Université de Rennes, Rennes, France
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6
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Zhao Y, Liu X, He Z, Niu X, Shi W, Ding JM, Zhang L, Yuan T, Li A, Yang W, Lu L. Essential role of proteasomes in maintaining self-renewal in neural progenitor cells. Sci Rep 2016; 6:19752. [PMID: 26804982 PMCID: PMC4726439 DOI: 10.1038/srep19752] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Accepted: 12/17/2015] [Indexed: 11/29/2022] Open
Abstract
Protein turnover and homeostasis are regulated by the proteasomal system, which is critical for cell function and viability. Pluripotency of stem cells also relies on normal proteasomal activity that mitigates senescent phenotypes induced by intensive cell replications, as previously demonstrated in human bone marrow stromal cells. In this study, we investigated the role of proteasomes in self-renewal of neural progenitor cells (NPCs). Through both in vivo and in vitro analyses, we found that the expression of proteasomes was progressively decreased during aging. Likewise, proliferation and self-renewal of NPCs were also impaired in aged mice, suggesting that the down-regulation of proteasomes might be responsible for this senescent phenotype. Lowering proteasomal activity by loss-of-function manipulations mimicked the senescence of NPCs both in vitro and in vivo; conversely, enhancing proteasomal activity restored and improved self-renewal in aged NPCs. These results collectively indicate that proteasomes work as a key regulator in promoting self-renewal of NPCs. This potentially provides a promising therapeutic target for age-dependent neurodegenerative diseases.
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Affiliation(s)
- Yunhe Zhao
- Department of Anatomy, Shanxi Medical University, Taiyuan, 030001, China
| | - Xueqin Liu
- Department of Anatomy, Shanxi Medical University, Taiyuan, 030001, China
| | - Zebin He
- Department of Anatomy, Shanxi Medical University, Taiyuan, 030001, China
| | - Xiaojie Niu
- Department of Anatomy, Shanxi Medical University, Taiyuan, 030001, China
| | - Weijun Shi
- Department of Anatomy, Shanxi Medical University, Taiyuan, 030001, China
| | - Jian M. Ding
- Department of Physiology, East Carolina University Medical School, Greenville, 27834, USA
| | - Li Zhang
- Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou, 510632, China
- Guangdong Key Laboratory of Brain Function and Diseases, Jinan University, Guangzhou, 510632, China
| | - Tifei Yuan
- School of Psychology, Nanjing Normal University, Nanjing, 210097, China
| | - Ang Li
- Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou, 510632, China
- Guangdong Key Laboratory of Brain Function and Diseases, Jinan University, Guangzhou, 510632, China
| | - Wulin Yang
- Center of Medical Physics and Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China
- Cancer Hospital, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China
| | - Li Lu
- Department of Anatomy, Shanxi Medical University, Taiyuan, 030001, China
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7
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Examining the potential clinical value of curcumin in the prevention and diagnosis of Alzheimer’s disease. Br J Nutr 2015; 115:449-65. [DOI: 10.1017/s0007114515004687] [Citation(s) in RCA: 157] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
AbstractCurcumin derived from turmeric is well documented for its anti-carcinogenic, antioxidant and anti-inflammatory properties. Recent studies show that curcumin also possesses neuroprotective and cognitive-enhancing properties that may help delay or prevent neurodegenerative diseases, including Alzheimer’s disease (AD). Currently, clinical diagnosis of AD is onerous, and it is primarily based on the exclusion of other causes of dementia. In addition, phase III clinical trials of potential treatments have mostly failed, leaving disease-modifying interventions elusive. AD can be characterised neuropathologically by the deposition of extracellular β amyloid (Aβ) plaques and intracellular accumulation of tau-containing neurofibrillary tangles. Disruptions in Aβ metabolism/clearance contribute to AD pathogenesis. In vitro studies have shown that Aβ metabolism is altered by curcumin, and animal studies report that curcumin may influence brain function and the development of dementia, because of its antioxidant and anti-inflammatory properties, as well as its ability to influence Aβ metabolism. However, clinical studies of curcumin have revealed limited effects to date, most likely because of curcumin’s relatively low solubility and bioavailability, and because of selection of cohorts with diagnosed AD, in whom there is already major neuropathology. However, the fresh approach of targeting early AD pathology (by treating healthy, pre-clinical and mild cognitive impairment-stage cohorts) combined with new curcumin formulations that increase bioavailability is renewing optimism concerning curcumin-based therapy. The aim of this paper is to review the current evidence supporting an association between curcumin and modulation of AD pathology, including in vitro and in vivo studies. We also review the use of curcumin in emerging retinal imaging technology, as a fluorochrome for AD diagnostics.
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8
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Vanhooren V, Navarrete Santos A, Voutetakis K, Petropoulos I, Libert C, Simm A, Gonos ES, Friguet B. Protein modification and maintenance systems as biomarkers of ageing. Mech Ageing Dev 2015; 151:71-84. [PMID: 25846863 DOI: 10.1016/j.mad.2015.03.009] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 03/24/2015] [Accepted: 03/26/2015] [Indexed: 12/22/2022]
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9
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Chondrogianni N, Voutetakis K, Kapetanou M, Delitsikou V, Papaevgeniou N, Sakellari M, Lefaki M, Filippopoulou K, Gonos ES. Proteasome activation: An innovative promising approach for delaying aging and retarding age-related diseases. Ageing Res Rev 2015; 23:37-55. [PMID: 25540941 DOI: 10.1016/j.arr.2014.12.003] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 12/09/2014] [Accepted: 12/15/2014] [Indexed: 11/16/2022]
Abstract
Aging is a natural process accompanied by a progressive accumulation of damage in all constituent macromolecules (nucleic acids, lipids and proteins). Accumulation of damage in proteins leads to failure of proteostasis (or vice versa) due to increased levels of unfolded, misfolded or aggregated proteins and, in turn, to aging and/or age-related diseases. The major cellular proteolytic machineries, namely the proteasome and the lysosome, have been shown to dysfunction during aging and age-related diseases. Regarding the proteasome, it is well established that it can be activated either through genetic manipulation or through treatment with natural or chemical compounds that eventually result to extension of lifespan or deceleration of the progression of age-related diseases. This review article focuses on proteasome activation studies in several species and cellular models and their effects on aging and longevity. Moreover, it summarizes findings regarding proteasome activation in the major age-related diseases as well as in progeroid syndromes.
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Affiliation(s)
- Niki Chondrogianni
- National Hellenic Research Foundation, Institute of Biology, Medicinal Chemistry and Biotechnology, 48 Vas. Constantinou Ave., 116 35 Athens, Greece.
| | - Konstantinos Voutetakis
- National Hellenic Research Foundation, Institute of Biology, Medicinal Chemistry and Biotechnology, 48 Vas. Constantinou Ave., 116 35 Athens, Greece
| | - Marianna Kapetanou
- National Hellenic Research Foundation, Institute of Biology, Medicinal Chemistry and Biotechnology, 48 Vas. Constantinou Ave., 116 35 Athens, Greece
| | - Vasiliki Delitsikou
- National Hellenic Research Foundation, Institute of Biology, Medicinal Chemistry and Biotechnology, 48 Vas. Constantinou Ave., 116 35 Athens, Greece
| | - Nikoletta Papaevgeniou
- National Hellenic Research Foundation, Institute of Biology, Medicinal Chemistry and Biotechnology, 48 Vas. Constantinou Ave., 116 35 Athens, Greece
| | - Marianthi Sakellari
- National Hellenic Research Foundation, Institute of Biology, Medicinal Chemistry and Biotechnology, 48 Vas. Constantinou Ave., 116 35 Athens, Greece; Örebro University, Medical School, Örebro, Sweden
| | - Maria Lefaki
- National Hellenic Research Foundation, Institute of Biology, Medicinal Chemistry and Biotechnology, 48 Vas. Constantinou Ave., 116 35 Athens, Greece
| | - Konstantina Filippopoulou
- National Hellenic Research Foundation, Institute of Biology, Medicinal Chemistry and Biotechnology, 48 Vas. Constantinou Ave., 116 35 Athens, Greece
| | - Efstathios S Gonos
- National Hellenic Research Foundation, Institute of Biology, Medicinal Chemistry and Biotechnology, 48 Vas. Constantinou Ave., 116 35 Athens, Greece; Örebro University, Medical School, Örebro, Sweden.
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10
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The amazing ubiquitin-proteasome system: structural components and implication in aging. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2014; 314:171-237. [PMID: 25619718 DOI: 10.1016/bs.ircmb.2014.09.002] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Proteome quality control (PQC) is critical for the maintenance of cellular functionality and it is assured by the curating activity of the proteostasis network (PN). PN is constituted of several complex protein machines that under conditions of proteome instability aim to, firstly identify, and then, either rescue or degrade nonnative polypeptides. Central to the PN functionality is the ubiquitin-proteasome system (UPS) which is composed from the ubiquitin-conjugating enzymes and the proteasome; the latter is a sophisticated multi-subunit molecular machine that functions in a bimodal way as it degrades both short-lived ubiquitinated normal proteins and nonfunctional polypeptides. UPS is also involved in PQC of the nucleus, the endoplasmic reticulum and the mitochondria and it also interacts with the other main cellular degradation axis, namely the autophagy-lysosome system. UPS functionality is optimum in the young organism but it is gradually compromised during aging resulting in increasing proteotoxic stress; these effects correlate not only with aging but also with most age-related diseases. Herein, we present a synopsis of the UPS components and of their functional alterations during cellular senescence or in vivo aging. We propose that mild UPS activation in the young organism will, likely, promote antiaging effects and/or suppress age-related diseases.
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11
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Kim KC, Piao MJ, Zheng J, Yao CW, Cha JW, Kumara MHSR, Han X, Kang HK, Lee NH, Hyun JW. Fucodiphlorethol G Purified from Ecklonia cava Suppresses Ultraviolet B Radiation-Induced Oxidative Stress and Cellular Damage. Biomol Ther (Seoul) 2014; 22:301-7. [PMID: 25143808 PMCID: PMC4131532 DOI: 10.4062/biomolther.2014.044] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Revised: 06/02/2014] [Accepted: 06/11/2014] [Indexed: 12/04/2022] Open
Abstract
Fucodiphlorethol G (6’-[2,4-dihydroxy-6-(2,4,6-trihydroxyphenoxy)phenoxy]biphenyl-2,2’,4,4’,6-pentol) is a compound purified from Ecklonia cava, a brown alga that is widely distributed offshore of Jeju Island. This study investigated the protective effects of fucodiphlorethol G against oxidative damage-mediated apoptosis induced by ultraviolet B (UVB) irradiation. Fucodiphlorethol G attenuated the generation of 2, 2-diphenyl-1-picrylhydrazyl radicals and intracellular reactive oxygen species in response to UVB irradiation. Fucodiphlorethol G suppressed the inhibition of human keratinocyte growth by UVB irradiation. Additionally, the wavelength of light absorbed by fucodiphlorethol G was close to the UVB spectrum. Fucodiphlorethol G reduced UVB radiation-induced 8-isoprostane generation and DNA fragmentation in human keratinocytes. Moreover, fucodiphlorethol G reduced UVB radiation-induced loss of mitochondrial membrane potential, generation of apoptotic cells, and active caspase-9 expression. Taken together, fucodiphlorethol G protected human keratinocytes against UVB radiation-induced cell damage and apoptosis by absorbing UVB radiation and scavenging reactive oxygen species.
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Affiliation(s)
- Ki Cheon Kim
- School of Medicine and Institute for Nuclear Science and Technology
| | - Mei Jing Piao
- School of Medicine and Institute for Nuclear Science and Technology
| | - Jian Zheng
- School of Medicine and Institute for Nuclear Science and Technology
| | - Cheng Wen Yao
- School of Medicine and Institute for Nuclear Science and Technology
| | - Ji Won Cha
- School of Medicine and Institute for Nuclear Science and Technology
| | | | - Xia Han
- School of Medicine and Institute for Nuclear Science and Technology
| | - Hee Kyoung Kang
- School of Medicine and Institute for Nuclear Science and Technology
| | - Nam Ho Lee
- Department of Chemistry, College of Natural Sciences, Jeju National University, Jeju 690-756, Republic of Korea
| | - Jin Won Hyun
- School of Medicine and Institute for Nuclear Science and Technology
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12
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Chondrogianni N, Sakellari M, Lefaki M, Papaevgeniou N, Gonos ES. Proteasome activation delays aging in vitro and in vivo. Free Radic Biol Med 2014; 71:303-320. [PMID: 24681338 DOI: 10.1016/j.freeradbiomed.2014.03.031] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Revised: 03/18/2014] [Accepted: 03/18/2014] [Indexed: 02/02/2023]
Abstract
Aging is a natural biological process that is characterized by a progressive accumulation of macromolecular damage. In the proteome, aging is accompanied by decreased protein homeostasis and function of the major cellular proteolytic systems, leading to the accumulation of unfolded, misfolded, or aggregated proteins. In particular, the proteasome is responsible for the removal of normal as well as damaged or misfolded proteins. Extensive work during the past several years has clearly demonstrated that proteasome activation by either genetic means or use of compounds significantly retards aging. Importantly, this represents a common feature across evolution, thereby suggesting proteasome activation to be an evolutionarily conserved mechanism of aging and longevity regulation. This review article reports on the means of function of these proteasome activators and how they regulate aging in various species.
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Affiliation(s)
- Niki Chondrogianni
- National Hellenic Research Foundation, Institute of Biology, Medicinal Chemistry, and Biotechnology, 116 35 Athens, Greece.
| | - Marianthi Sakellari
- National Hellenic Research Foundation, Institute of Biology, Medicinal Chemistry, and Biotechnology, 116 35 Athens, Greece; Örebro University Medical School, Örebro, Sweden
| | - Maria Lefaki
- National Hellenic Research Foundation, Institute of Biology, Medicinal Chemistry, and Biotechnology, 116 35 Athens, Greece
| | - Nikoletta Papaevgeniou
- National Hellenic Research Foundation, Institute of Biology, Medicinal Chemistry, and Biotechnology, 116 35 Athens, Greece
| | - Efstathios S Gonos
- National Hellenic Research Foundation, Institute of Biology, Medicinal Chemistry, and Biotechnology, 116 35 Athens, Greece; Örebro University Medical School, Örebro, Sweden
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Dal Vechio FH, Cerqueira F, Augusto O, Lopes R, Demasi M. Peptides that activate the 20S proteasome by gate opening increased oxidized protein removal and reduced protein aggregation. Free Radic Biol Med 2014; 67:304-13. [PMID: 24291399 DOI: 10.1016/j.freeradbiomed.2013.11.017] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Revised: 11/01/2013] [Accepted: 11/18/2013] [Indexed: 12/22/2022]
Abstract
The proteasome is a multicatalytic protease that is responsible for the degradation of the majority of intracellular proteins. Its role is correlated with several major regulatory pathways that are involved in cell cycle control, signaling, and antigen presentation, as well as in the removal of oxidatively damaged proteins. Although several proteasomal catalytic inhibitors have been described, very few activators have been reported to date. Some reports in the literature highlight the cellular protective effects of proteasome activation against oxidative stress and its effect on increased life span. In this work, we describe a peptide named proteasome-activating peptide 1 (PAP1), which increases the chymotrypsin-like proteasomal catalytic activity and, consequently, proteolytic rates both in vitro and in culture. PAP1 proteasomal activation is mediated by the opening of the proteasomal catalytic chamber. We also demonstrate that the observed proteasomal activation protected cells from oxidative stress; further, PAP1 prevented protein aggregation in a cellular model of amyotrophic lateral sclerosis. The role of 20SPT gate opening underlying protection against oxidative stress was also explored in yeast cells. The present data indicate the importance of proteasomal activators as potential drugs for the treatment of pathologies associated with the impaired removal of damaged proteins, which is observed in many neurodegenerative diseases.
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Affiliation(s)
- Francisco H Dal Vechio
- Laboratório de Bioquímica e Biofísica, Instituto Butantan, São Paulo, SP 05503-001, Brazil
| | - Fernanda Cerqueira
- Laboratório Especial de Toxinologia Aplicada, Instituto Butantan, São Paulo, SP 05503-001, Brazil
| | - Ohara Augusto
- Laboratório Especial de Toxinologia Aplicada, Instituto Butantan, São Paulo, SP 05503-001, Brazil
| | - Robson Lopes
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Marilene Demasi
- Laboratório de Bioquímica e Biofísica, Instituto Butantan, São Paulo, SP 05503-001, Brazil.
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Photoprotection. J Am Acad Dermatol 2013; 69:853.e1-12; quiz 865-6. [DOI: 10.1016/j.jaad.2013.08.021] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Revised: 08/02/2013] [Accepted: 08/08/2013] [Indexed: 02/07/2023]
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15
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Abida H, Ruchaud S, Rios L, Humeau A, Probert I, De Vargas C, Bach S, Bowler C. Bioprospecting marine plankton. Mar Drugs 2013; 11:4594-611. [PMID: 24240981 PMCID: PMC3853748 DOI: 10.3390/md11114594] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Revised: 09/06/2013] [Accepted: 10/09/2013] [Indexed: 12/18/2022] Open
Abstract
The ocean dominates the surface of our planet and plays a major role in regulating the biosphere. For example, the microscopic photosynthetic organisms living within provide 50% of the oxygen we breathe, and much of our food and mineral resources are extracted from the ocean. In a time of ecological crisis and major changes in our society, it is essential to turn our attention towards the sea to find additional solutions for a sustainable future. Remarkably, while we are overexploiting many marine resources, particularly the fisheries, the planktonic compartment composed of zooplankton, phytoplankton, bacteria and viruses, represents 95% of marine biomass and yet the extent of its diversity remains largely unknown and underexploited. Consequently, the potential of plankton as a bioresource for humanity is largely untapped. Due to their diverse evolutionary backgrounds, planktonic organisms offer immense opportunities: new resources for medicine, cosmetics and food, renewable energy, and long-term solutions to mitigate climate change. Research programs aiming to exploit culture collections of marine micro-organisms as well as to prospect the huge resources of marine planktonic biodiversity in the oceans are now underway, and several bioactive extracts and purified compounds have already been identified. This review will survey and assess the current state-of-the-art and will propose methodologies to better exploit the potential of marine plankton for drug discovery and for dermocosmetics.
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Affiliation(s)
- Heni Abida
- Environmental and Evolutionary Genomics Section, Institut de Biologie de l’Ecole Normale Supérieure (IBENS), Centre National de la Recherche Scientifique (CNRS) UMR8197 INSERM U1024, 46 rue d’Ulm, Paris CEDEX 05 75230, France; E-Mail:
| | - Sandrine Ruchaud
- Kinase Inhibitor Specialized Screening facility (KISSf), Station Biologique de Roscoff, Centre National de la Recherche Scientifique (CNRS) USR 3151 (Protein Phosphorylation and Human Diseases), CS 90074, Roscoff CEDEX 29688, France; E-Mail:
| | - Laurent Rios
- Greentech France, Biopôle Clermont Limagne, Saint Beauzire 63360, France; E-Mail:
| | - Anne Humeau
- Soliance France, Centre de Biotechnologie Marine, Anse de Pors Gelin-Ile Grande, Plemeur-Bodou 22560, France; E-Mail:
| | - Ian Probert
- Roscoff Culture Collection, Station Biologique de Roscoff, Centre National de la Recherche Scientifique (CNRS) USR 3151, Place Georges Teissier, CS 90074, Roscoff CEDEX 29688, France; E-Mail:
| | - Colomban De Vargas
- EPPO Laboratory, Station Biologique de Roscoff, Centre National de la Recherche Scientifique (CNRS) USR 3151, Place Georges Teissier, CS 90074, Roscoff CEDEX 29688, France; E-Mail:
| | - Stéphane Bach
- Kinase Inhibitor Specialized Screening facility (KISSf), Station Biologique de Roscoff, Centre National de la Recherche Scientifique (CNRS) USR 3151 (Protein Phosphorylation and Human Diseases), CS 90074, Roscoff CEDEX 29688, France; E-Mail:
- Authors to whom correspondence should be addressed; E-Mails: (S.B.); (C.B.); Tel.: +33-2-98-29-23-91 (S.B.); Fax: +33-2-98-29-25-26 (S.B.); Tel.: +33-1-44-32-35-25 (C.B.); Fax: +33-1-44-32-39-35 (C.B.)
| | - Chris Bowler
- Environmental and Evolutionary Genomics Section, Institut de Biologie de l’Ecole Normale Supérieure (IBENS), Centre National de la Recherche Scientifique (CNRS) UMR8197 INSERM U1024, 46 rue d’Ulm, Paris CEDEX 05 75230, France; E-Mail:
- Authors to whom correspondence should be addressed; E-Mails: (S.B.); (C.B.); Tel.: +33-2-98-29-23-91 (S.B.); Fax: +33-2-98-29-25-26 (S.B.); Tel.: +33-1-44-32-35-25 (C.B.); Fax: +33-1-44-32-39-35 (C.B.)
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16
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Aldini G, Vistoli G, Stefek M, Chondrogianni N, Grune T, Sereikaite J, Sadowska-Bartosz I, Bartosz G. Molecular strategies to prevent, inhibit, and degrade advanced glycoxidation and advanced lipoxidation end products. Free Radic Res 2013; 47 Suppl 1:93-137. [PMID: 23560617 DOI: 10.3109/10715762.2013.792926] [Citation(s) in RCA: 111] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The advanced glycoxidation end products (AGEs) and lipoxidation end products (ALEs) contribute to the development of diabetic complications and of other pathologies. The review discusses the possibilities of counteracting the formation and stimulating the degradation of these species by pharmaceuticals and natural compounds. The review discusses inhibitors of ALE and AGE formation, cross-link breakers, ALE/AGE elimination by enzymes and proteolytic systems, receptors for advanced glycation end products (RAGEs) and blockade of the ligand-RAGE axis.
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Affiliation(s)
- Giancarlo Aldini
- Department of Pharmaceutical Sciences, University of Milan, Milan, Italy
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17
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Chondrogianni N, Petropoulos I, Grimm S, Georgila K, Catalgol B, Friguet B, Grune T, Gonos ES. Protein damage, repair and proteolysis. Mol Aspects Med 2012; 35:1-71. [PMID: 23107776 DOI: 10.1016/j.mam.2012.09.001] [Citation(s) in RCA: 177] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Accepted: 09/26/2012] [Indexed: 01/10/2023]
Abstract
Proteins are continuously affected by various intrinsic and extrinsic factors. Damaged proteins influence several intracellular pathways and result in different disorders and diseases. Aggregation of damaged proteins depends on the balance between their generation and their reversal or elimination by protein repair systems and degradation, respectively. With regard to protein repair, only few repair mechanisms have been evidenced including the reduction of methionine sulfoxide residues by the methionine sulfoxide reductases, the conversion of isoaspartyl residues to L-aspartate by L-isoaspartate methyl transferase and deglycation by phosphorylation of protein-bound fructosamine by fructosamine-3-kinase. Protein degradation is orchestrated by two major proteolytic systems, namely the lysosome and the proteasome. Alteration of the function for both systems has been involved in all aspects of cellular metabolic networks linked to either normal or pathological processes. Given the importance of protein repair and degradation, great effort has recently been made regarding the modulation of these systems in various physiological conditions such as aging, as well as in diseases. Genetic modulation has produced promising results in the area of protein repair enzymes but there are not yet any identified potent inhibitors, and, to our knowledge, only one activating compound has been reported so far. In contrast, different drugs as well as natural compounds that interfere with proteolysis have been identified and/or developed resulting in homeostatic maintenance and/or the delay of disease progression.
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Affiliation(s)
- Niki Chondrogianni
- Institute of Biology, Medicinal Chemistry and Biotechnology, National Helenic Research Foundation, 48 Vas. Constantinou Ave., 116 35 Athens, Greece.
| | - Isabelle Petropoulos
- Laboratoire de Biologie Cellulaire du Vieillissement, UR4-UPMC, IFR 83, Université Pierre et Marie Curie-Paris 6, 4 Place Jussieu, 75005 Paris, France
| | - Stefanie Grimm
- Department of Nutritional Toxicology, Institute of Nutrition, Friedrich-Schiller University, Dornburger Straße 24, 07743 Jena, Germany
| | - Konstantina Georgila
- Institute of Biology, Medicinal Chemistry and Biotechnology, National Helenic Research Foundation, 48 Vas. Constantinou Ave., 116 35 Athens, Greece
| | - Betul Catalgol
- Department of Biochemistry, Faculty of Medicine, Genetic and Metabolic Diseases Research Center (GEMHAM), Marmara University, Haydarpasa, Istanbul, Turkey
| | - Bertrand Friguet
- Laboratoire de Biologie Cellulaire du Vieillissement, UR4-UPMC, IFR 83, Université Pierre et Marie Curie-Paris 6, 4 Place Jussieu, 75005 Paris, France
| | - Tilman Grune
- Department of Nutritional Toxicology, Institute of Nutrition, Friedrich-Schiller University, Dornburger Straße 24, 07743 Jena, Germany
| | - Efstathios S Gonos
- Institute of Biology, Medicinal Chemistry and Biotechnology, National Helenic Research Foundation, 48 Vas. Constantinou Ave., 116 35 Athens, Greece.
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18
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19
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Changes of the Proteasomal System During the Aging Process. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2012; 109:249-75. [DOI: 10.1016/b978-0-12-397863-9.00007-9] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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20
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Chondrogianni N, Gonos ES. Structure and Function of the Ubiquitin–Proteasome System. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2012; 109:41-74. [DOI: 10.1016/b978-0-12-397863-9.00002-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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21
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Pallela R, Kim SK. Impact of marine micro- and macroalgal consumption on photoprotection. ADVANCES IN FOOD AND NUTRITION RESEARCH 2011; 64:287-95. [PMID: 22054956 DOI: 10.1016/b978-0-12-387669-0.00023-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The enormousness of species diversity of oceans leads to the isolation and development of health- and beauty-enhancing components from various marine organisms. The significance of these marine-derived compounds or substances has been scientifically well implied for various biological and biomedical parameters. One such important parameter is photoprotectivity, which is the major concern nowadays because of the depletion in ozone layer and the possible high risk of UV irradiation to humans. The marine macro- as well as microalgae and their food products, knowingly and unknowingly, have been used since hundreds of years. These foods possess tremendous implications in defending the highly hazardous UV radiation, thereby facilitating photoprotection to humans. In addition, based on the recent studies, many of the UV-protecting algal species is directed for the use as medicinally valuable foods and food ingredients. This chapter describes certain micro- and macroalgal species along with their photoprotective importance.
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Affiliation(s)
- Ramjee Pallela
- Marine Bioprocess Research Center, Pukyong National University, Busan, Republic of Korea
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22
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Abstract
The proteasome is an important component of the intracellular system for the turnover of proteins. The mammalian proteasome is engaged to degrade a bulky fraction of soluble intracellular proteins both in an ubiquitin-dependent and independent manner. The proteasome is composed by a central catalytic core--the 20S proteasome--where three different proteases are located, whose activities can be measured. A detailed protocol for measuring accurately the three activities of the 20S proteasome in cell and tissue homogenates, using specific fluorogenic substrates and a microplate reader fluorometer, are described. Successful applications of this method include determining changes in the proteasomal activities during aging, anti-aging interventions, cell cycle analysis, and in various disease states including neurodegenerative diseases and cancers.
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23
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Imbert I, Gondran C, Oberto G, Cucumel K, Dal Farra C, Domloge N. Maintenance of the ubiquitin-proteasome system activity correlates with visible skin benefits. Int J Cosmet Sci 2010; 32:446-57. [DOI: 10.1111/j.1468-2494.2010.00575.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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24
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Rastogi RP, Sinha RP, Singh SP, Häder DP. Photoprotective compounds from marine organisms. J Ind Microbiol Biotechnol 2010; 37:537-58. [PMID: 20401734 DOI: 10.1007/s10295-010-0718-5] [Citation(s) in RCA: 112] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2010] [Accepted: 03/26/2010] [Indexed: 12/19/2022]
Abstract
The substantial loss in the stratospheric ozone layer and consequent increase in solar ultraviolet radiation on the earth's surface have augmented the interest in searching for natural photoprotective compounds in organisms of marine as well as freshwater ecosystems. A number of photoprotective compounds such as mycosporine-like amino acids (MAAs), scytonemin, carotenoids and several other UV-absorbing substances of unknown chemical structure have been identified from different organisms. MAAs form the most common class of UV-absorbing compounds known to occur widely in various marine organisms; however, several compounds having UV-screening properties still need to be identified. The synthesis of scytonemin, a predominant UV-A-photoprotective pigment, is exclusively reported in cyanobacteria. Carotenoids are important components of the photosynthetic apparatus that serve both light-harvesting and photoprotective functions, either by direct quenching of the singlet oxygen or other toxic reactive oxygen species or by dissipating the excess energy in the photosynthetic apparatus. The production of photoprotective compounds is affected by several environmental factors such as different wavelengths of UVR, desiccation, nutrients, salt concentration, light as well as dark period, and still there is controversy about the biosynthesis of various photoprotective compounds. Recent studies have focused on marine organisms as a source of natural bioactive molecules having a photoprotective role, their biosynthesis and commercial application. However, there is a need for extensive work to explore the photoprotective role of various UV-absorbing compounds from marine habitats so that a range of biotechnological and pharmaceutical applications can be found.
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Affiliation(s)
- Rajesh P Rastogi
- Laboratory of Photobiology and Molecular Microbiology, Centre of Advanced Study in Botany, Banaras Hindu University, Varanasi 221005, India
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25
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Chondrogianni N, Gonos ES. Proteasome Function Determines Cellular Homeostasis and the Rate of Aging. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2010; 694:38-46. [DOI: 10.1007/978-1-4419-7002-2_4] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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26
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Simkó GI, Gyurkó D, Veres DV, Nánási T, Csermely P. Network strategies to understand the aging process and help age-related drug design. Genome Med 2009; 1:90. [PMID: 19804610 PMCID: PMC2768997 DOI: 10.1186/gm90] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Recent studies have demonstrated that network approaches are highly appropriate tools for understanding the extreme complexity of the aging process. Moreover, the generality of the network concept helps to define and study the aging of technological and social networks and ecosystems, which may generate novel concepts for curing age-related diseases. The current review focuses on the role of protein-protein interaction networks (inter-actomes) in aging. Hubs and inter-modular elements of both interactomes and signaling networks are key regulators of the aging process. Aging induces an increase in the permeability of several cellular compartments, such as the cell nucleus, introducing gross changes in the representation of network structures. The large overlap between aging genes and genes of age-related major diseases makes drugs that aid healthy aging promising candidates for the prevention and treatment of age-related diseases, such as cancer, atherosclerosis, diabetes and neurodegenerative disorders. We also discuss a number of possible research options to further explore the potential of the network concept in this important field, and show that multi-target drugs (representing 'magic-buckshots' instead of the traditional 'magic bullets') may become an especially useful class of age-related drugs in the future.
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Affiliation(s)
- Gábor I Simkó
- Semmelweis University, Department of Medical Chemistry, PO Box 260, H-1444 Budapest, Hungary.
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Ngo JK, Davies KJA. Mitochondrial Lon protease is a human stress protein. Free Radic Biol Med 2009; 46:1042-8. [PMID: 19439239 PMCID: PMC3093304 DOI: 10.1016/j.freeradbiomed.2008.12.024] [Citation(s) in RCA: 105] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2008] [Revised: 12/12/2008] [Accepted: 12/31/2008] [Indexed: 12/17/2022]
Abstract
The targeted removal of damaged proteins by proteolysis is crucial for cell survival. We have shown previously that the Lon protease selectively degrades oxidized mitochondrial proteins, thus preventing their aggregation and cross-linking. We now show that the Lon protease is a stress-responsive protein that is induced by multiple stressors, including heat shock, serum starvation, and oxidative stress. Lon induction, by pretreatment with low-level stress, protects against oxidative protein damage, diminished mitochondrial function, and loss of cell proliferation induced by toxic levels of hydrogen peroxide. Blocking Lon induction with Lon siRNA also blocks this induced protection. We propose that Lon is a generalized stress-protective enzyme whose decline may contribute to the increased levels of protein damage and mitochondrial dysfunction observed in aging and age-related diseases.
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Affiliation(s)
- Jenny K Ngo
- Division of Molecular and Computational Biology, Ethel Percy Andrus Gerontology Center, University of Southern California, Los Angeles, CA 90089-0191, USA
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28
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Angerhofer CK, Maes D, Giacomoni PU. The Use of Natural Compounds and Botanicals in the Development of Anti-Aging Skin Care Products. SKIN AGING HANDBOOK 2009:205-263. [DOI: 10.1016/b978-0-8155-1584-5.50014-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2025]
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29
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Regalado EL, Rodríguez M, Menéndez R, Concepción AA, Nogueiras C, Laguna A, Rodríguez AA, Williams DE, Lorenzo-Luaces P, Valdés O, Hernandez Y. Repair of UVB-damaged skin by the antioxidant sulphated flavone glycoside thalassiolin B isolated from the marine plant Thalassia testudinum Banks ex König. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2009; 11:74-80. [PMID: 18607659 DOI: 10.1007/s10126-008-9123-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2008] [Accepted: 06/05/2008] [Indexed: 05/26/2023]
Abstract
Daily topical application of the aqueous ethanolic extract of the marine sea grass, Thalassia testudinum, on mice skin exposed to UVB radiation resulted in a dose-dependent recovery of the skin macroscopic alterations over a 6-day period. Maximal effect (90%) occurred at a dose of 240 microg/cm(2), with no additional effects at higher doses. Bioassay-guided fractionation of the plant extract resulted in the isolation of thalassiolin B (1). Topical application of 1 (240 microg/cm(2)) markedly reduces skin UVB-induced damage. In addition, thalassiolin B scavenged 2,2-diphenyl-2-picrylhydrazyl radical with an EC(50) = 100 microg/ml. These results suggest that thalassiolin B is responsible for the skin-regenerating effects of the crude extract of T. testudinum.
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Affiliation(s)
- Erik L Regalado
- Department of Chemistry, Center of Marine Bioproducts, Loma y 37, Alturas del Vedado, C.P. 10400 Havana, Cuba.
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Abstract
Homeostasis is a key feature of cellular lifespan. Maintenance of cellular homeostasis influences the rate of aging and is determined by several factors, including efficient proteolysis of damaged proteins. Protein degradation is predominantly catalyzed by the proteasome. Specifically, the proteasome is responsible for cell clearance of abnormal, denatured or in general damaged proteins as well as for the regulated degradation of short-lived proteins. As proteasome has an impaired function during aging, emphasis has been given recently in identifying ways of its activation. A number of studies have shown that the proteasome can be activated by genetic manipulations as well as by factors that affect its conformation and stability. Importantly the developed proteasome activated cell lines exhibit an extended lifespan. This review article discusses in details the various factors that are involved in proteasome biosynthesis and assembly and how they contribute to its activation. Finally as few natural compounds have been identified having proteasome activation properties, we discuss the advantages of this novel antiaging strategy.
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Affiliation(s)
- Niki Chondrogianni
- National Hellenic Research Foundation, Institute of Biological Research and Biotechnology, Athens 11635, Greece
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31
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Ralf Paus L, Berneburg M, Trelles M, Friguet B, Ogden S, Esrefoglu M, Kaya G, Goldberg DJ, Mordon S, Calderhead RG, Griffiths CEM, Saurat JH, Thappa DM. How best to halt and/or revert UV-induced skin ageing: strategies, facts and fiction. Exp Dermatol 2008. [DOI: 10.1111/j.1600-0625.2007.00665.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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32
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Friguet B. Viewpoint 4. Exp Dermatol 2008. [DOI: 10.1111/j.1600-0625.2007.00665_4.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Katsiki M, Chondrogianni N, Chinou I, Rivett AJ, Gonos ES. The olive constituent oleuropein exhibits proteasome stimulatory properties in vitro and confers life span extension of human embryonic fibroblasts. Rejuvenation Res 2007; 10:157-72. [PMID: 17518699 DOI: 10.1089/rej.2006.0513] [Citation(s) in RCA: 132] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Normal human fibroblasts undergo replicative senescence due to both genetic and environmental factors. Senescence and aging can be further accelerated by exposure of cells to a variety of oxidative agents that contribute among other effects to the accumulation of damaged proteins. The proteasome, a multicatalytic nonlysosomal protease, has impaired function during aging, while its increased expression delays senescence in human fibroblasts. The aim of this study was to identify natural compounds that enhance proteasome activity and exhibit antiaging properties. We demonstrate that oleuropein, the major constituent of Olea europea leaf extract, olive oil and olives, enhances the proteasome activities in vitro stronger than other known chemical activators, possibly through conformational changes of the proteasome. Moreover, continuous treatment of early passage human embryonic fibroblasts with oleuropein decreases the intracellular levels of reactive oxygen species (ROS), reduces the amount of oxidized proteins through increased proteasome-mediated degradation rates and retains proteasome function during replicative senescence. Importantly, oleuropein-treated cultures exhibit a delay in the appearance of senescence morphology and their life span is extended by approximately 15%. In summary, these data demonstrate the beneficial effect of oleuropein on human fibroblasts undergoing replicative senescence and provide new insights towards enhancement of cellular antioxidant mechanisms by natural compounds that can be easily up-taken through normal diet.
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Affiliation(s)
- Magda Katsiki
- Institute of Biological Research and Biotechnology, Laboratory of Molecular and Cellular Aging, National Hellenic Research Foundation, Athens, Greece
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Bulteau AL, Moreau M, Nizard C, Friguet B. Proteasome and Photoaging: The Effects of UV Irradiation. Ann N Y Acad Sci 2007; 1100:280-90. [PMID: 17460189 DOI: 10.1196/annals.1395.029] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Cellular aging is characterized by the accumulation of oxidatively modified proteins that result, at least in part, from impaired degradation of abnormal proteins. The proteasome is the major intracellular proteolytic system implicated in the removal of abnormal and oxidized proteins. In human epidermal cells, previous studies have evidenced that proteasome function is decreased during aging as well as upon UV irradiation, which is the main component of photoaging. The age-related decline of proteasome activity has been reported to be due to either or both decreased proteasome subunits expression and content, inactivation upon alteration of proteasome subunits, and accumulation of endogenous inhibitors, such as highly oxidized and cross-linked proteins. To gain further insight in the mechanisms that might be implicated in the decreased activity of the proteasome upon photoaging, purified 20S human proteasome has been exposed to UVA- and UVB-irradiation. The effect of such an irradiation on proteasome peptidase activities has been monitored and shown to promote a stimulation or an inhibition of the peptidase activities depending on whether the proteasome is under its latent or a nonphysiological active form. Analysis of the patterns of proteasome subunits by 2D gel electrophoresis has revealed modification for several subunits for UV-irradiated proteasome only in its irreversibly activated form, compared with nonirradiated and irradiated latent forms, indicating that the 20S proteasome is rather resistant to UV irradiation.
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Affiliation(s)
- Anne-Laure Bulteau
- Laboratoire de Biologie et Biochimie Cellulaire du Vieillissement, Université Paris 7-Denis Diderot, 2 Place Jussieu, 75251, Paris Cedex 05, France
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Petropoulos I, Friguet B. Maintenance of proteins and aging: the role of oxidized protein repair. Free Radic Res 2007; 40:1269-76. [PMID: 17090416 DOI: 10.1080/10715760600917144] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
According to the free radical theory of aging proposed by Denham Harman (Journal of Gerontology 1956, 11, pp. 298-300), the continuous oxidative damage to cellular components over an organism's life span is a causal factor of the aging process. The age-related build-up of oxidized protein is therefore resulting from increased protein oxidative damage and/or decreased elimination of oxidized proteins. In this mini-review, we will address the fate, during aging, of the protein maintenance systems that are involved in the degradation of irreversibly oxidized proteins and in the repair of reversible protein oxidative damage with a special focus on the methionine sulfoxide reductases system. Since these protein degradation and repair systems have been found to be impaired with age, it is proposed that not only failure of redox homeostasis but, as importantly, failure of protein maintenance are critical factors in the aging process.
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Affiliation(s)
- Isabelle Petropoulos
- Laboratoire de Biologie et Biochimie Cellulaire du Vieillissement, EA 3106/IFR 117, Université Denis Diderot-Paris 7, CC 7128, 2 Place Jussieu, Paris Cedex, France
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Friguet B. Oxidized protein degradation and repair in ageing and oxidative stress. FEBS Lett 2006; 580:2910-6. [PMID: 16574110 DOI: 10.1016/j.febslet.2006.03.028] [Citation(s) in RCA: 162] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2006] [Accepted: 03/06/2006] [Indexed: 12/23/2022]
Abstract
Cellular ageing is characterized by the accumulation of oxidatively modified proteins which may be due to increased protein damage and/or decreased elimination of oxidized protein. Since the proteasome is in charge of protein turnover and removal of oxidized protein, its fate during ageing and upon oxidative stress has received special attention, and evidence has been provided for an age-related impairment of proteasome function. However, proteins when oxidized at the level of sulfur-containing amino acids can also be repaired. Therefore, the fate of the methionine sulfoxide reductase system during ageing has also been addressed as well as its role in protection against oxidative stress.
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Affiliation(s)
- Bertrand Friguet
- Laboratoire de Biologie et Biochimie Cellulaire du Vieillissement (EA 3106/IFR 117), Université Denis Diderot, Paris 7, 2 Place Jussieu, 75005 Paris, France.
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