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Tang X, Chen XF, Chen HZ, Liu DP. Mitochondrial Sirtuins in cardiometabolic diseases. Clin Sci (Lond) 2017; 131:2063-2078. [DOI: 10.1042/cs20160685] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
Abstract
Mitochondria are heterogeneous and essentially contribute to cellular functions and tissue homeostasis. Mitochondrial dysfunction compromises overall cell functioning, tissue damage, and diseases. The advances in mitochondrion biology increase our understanding of mitochondrial dynamics, bioenergetics, and redox homeostasis, and subsequently, their functions in tissue homeostasis and diseases, including cardiometabolic diseases (CMDs). The functions of mitochondria mainly rely on the enzymes in their matrix. Sirtuins are a family of NAD+-dependent deacylases and ADP-ribosyltransferases. Three members of the Sirtuin family (SIRT3, SIRT4, and SIRT5) are located in the mitochondrion. These mitochondrial Sirtuins regulate energy and redox metabolism as well as mitochondrial dynamics in the mitochondrial matrix and are involved in cardiovascular homeostasis and CMDs. In this review, we discuss the advances in our understanding of mitochondrial Sirtuins in mitochondrion biology and CMDs, including cardiac remodeling, pulmonary artery hypertension, and vascular dysfunction. The potential therapeutic strategies by targetting mitochondrial Sirtuins to improve mitochondrial function in CMDs are also addressed.
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Affiliation(s)
- Xiaoqiang Tang
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, 5 Dong Dan San Tiao, Beijing 100005, P.R. China
| | - Xiao-Feng Chen
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, 5 Dong Dan San Tiao, Beijing 100005, P.R. China
| | - Hou-Zao Chen
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, 5 Dong Dan San Tiao, Beijing 100005, P.R. China
| | - De-Pei Liu
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, 5 Dong Dan San Tiao, Beijing 100005, P.R. China
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202
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Bur H, Haapasaari KM, Turpeenniemi-Hujanen T, Kuittinen O, Auvinen P, Marin K, Soini Y, Karihtala P. Low Rap1-interacting factor 1 and sirtuin 6 expression predict poor outcome in radiotherapy-treated Hodgkin lymphoma patients. Leuk Lymphoma 2017; 59:679-689. [PMID: 28786706 DOI: 10.1080/10428194.2017.1344840] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Sirtuins (SIRTs) are a family of histone deacetylases, which widely regulate cellular metabolism and are also involved in DNA repair. Rap1-interacting factor 1 (Rif1) and O6-alkylguanine DNA alkyltransferase (MGMT) are DNA-repair enzymes, which may potentially be involved in resistance to treatment of classical Hodgkin lymphoma (HL). We assessed the expression levels of (previously unstudied) SIRT1, SIRT4, SIRT6, Rif1, and MGMT immunohistochemically in 85 patients with untreated classical HL. Aberrant distributions of SIRT1, SIRT4, and SIRT6 were detected in Hodgkin neoplastic Reed-Sternberg (RS) cells compared with reactive elements. Low-level expression of both Rif1 and SIRT6 predicted dismal relapse-free survival in radiotherapy-treated patients (multivariate analysis; HR 8.521; 95% CI 1.714-42.358; p = .0088). Expression levels of SIRT1, 4, and 6 were abnormally distributed in RS cells, suggesting a putative role of aberrant acetylation in classical HL carcinogenesis. Rif1 and SIRT6 may also have substantial prognostic and even predictive roles in classical HL.
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Affiliation(s)
- Hamid Bur
- a Department of Oncology and Radiotherapy , Medical Research Center Oulu, Oulu University Hospital and Cancer and Translational Medicine Research Unit, University of Oulu , Oulu , Finland
| | - Kirsi-Maria Haapasaari
- b Department of Pathology , Medical Research Center Oulu, Oulu University Hospital and University of Oulu , Oulu , Finland
| | - Taina Turpeenniemi-Hujanen
- a Department of Oncology and Radiotherapy , Medical Research Center Oulu, Oulu University Hospital and Cancer and Translational Medicine Research Unit, University of Oulu , Oulu , Finland
| | - Outi Kuittinen
- a Department of Oncology and Radiotherapy , Medical Research Center Oulu, Oulu University Hospital and Cancer and Translational Medicine Research Unit, University of Oulu , Oulu , Finland
| | - Päivi Auvinen
- c Department of Oncology , Cancer Center, Kuopio University Hospital and University of Eastern Finland , Kuopio , Finland
| | - Katja Marin
- c Department of Oncology , Cancer Center, Kuopio University Hospital and University of Eastern Finland , Kuopio , Finland
| | - Ylermi Soini
- d Department of Pathology and Forensic Medicine , Cancer Center of Eastern Finland, University of Eastern Finland , Kuopio , Finland
| | - Peeter Karihtala
- a Department of Oncology and Radiotherapy , Medical Research Center Oulu, Oulu University Hospital and Cancer and Translational Medicine Research Unit, University of Oulu , Oulu , Finland
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203
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Abstract
In a recent issue of Cell Metabolism, Anderson et al. (2017) report that SIRT4 regulates insulin sensitivity in the pancreas via activation of methylcrotonyl-CoA carboxylase 1 (MCCC1) by removal of dicarboxyacyl-lysine modifications. Thus, SIRT4 activates leucine catabolism and causes decreased secretion of insulin from the pancreas.
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Affiliation(s)
- Elma Zaganjor
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Sejal Vyas
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Marcia C Haigis
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA.
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204
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Ding RB, Bao J, Deng CX. Emerging roles of SIRT1 in fatty liver diseases. Int J Biol Sci 2017; 13:852-867. [PMID: 28808418 PMCID: PMC5555103 DOI: 10.7150/ijbs.19370] [Citation(s) in RCA: 219] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Accepted: 04/19/2017] [Indexed: 12/11/2022] Open
Abstract
Fatty liver diseases, which are commonly associated with high-fat/calorie diet, heavy alcohol consumption and/or other metabolic disorder causes, lead to serious medical concerns worldwide in recent years. It has been demonstrated that metabolic homeostasis disruption is most likely to be responsible for this global epidemic. Sirtuins are a group of conserved nicotinamide adenine dinucleotide (NAD+) dependent histone and/or protein deacetylases belonging to the silent information regulator 2 (Sir2) family. Among seven mammalian sirtuins, sirtuin 1 (SIRT 1) is the most extensively studied one and is involved in both alcoholic and nonalcoholic fatty liver diseases. SIRT1 plays beneficial roles in regulating hepatic lipid metabolism, controlling hepatic oxidative stress and mediating hepatic inflammation through deacetylating some transcriptional regulators against the progression of fatty liver diseases. Here we summarize the latest advances of the biological roles of SIRT1 in regulating lipid metabolism, oxidative stress and inflammation in the liver, and discuss the potential of SIRT1 as a therapeutic target for treating alcoholic and nonalcoholic fatty liver diseases.
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Affiliation(s)
- Ren-Bo Ding
- Cancer Centre, Faculty of Health Sciences, University of Macau, Macau SAR 999078, China
| | - Jiaolin Bao
- Cancer Centre, Faculty of Health Sciences, University of Macau, Macau SAR 999078, China
| | - Chu-Xia Deng
- Cancer Centre, Faculty of Health Sciences, University of Macau, Macau SAR 999078, China
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205
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Nuclear Acetyl-CoA Production by ACLY Promotes Homologous Recombination. Mol Cell 2017; 67:252-265.e6. [PMID: 28689661 DOI: 10.1016/j.molcel.2017.06.008] [Citation(s) in RCA: 169] [Impact Index Per Article: 24.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 05/02/2017] [Accepted: 06/07/2017] [Indexed: 12/21/2022]
Abstract
While maintaining the integrity of the genome and sustaining bioenergetics are both fundamental functions of the cell, potential crosstalk between metabolic and DNA repair pathways is poorly understood. Since histone acetylation plays important roles in DNA repair and is sensitive to the availability of acetyl coenzyme A (acetyl-CoA), we investigated a role for metabolic regulation of histone acetylation during the DNA damage response. In this study, we report that nuclear ATP-citrate lyase (ACLY) is phosphorylated at S455 downstream of ataxia telangiectasia mutated (ATM) and AKT following DNA damage. ACLY facilitates histone acetylation at double-strand break (DSB) sites, impairing 53BP1 localization and enabling BRCA1 recruitment and DNA repair by homologous recombination. ACLY phosphorylation and nuclear localization are necessary for its role in promoting BRCA1 recruitment. Upon PARP inhibition, ACLY silencing promotes genomic instability and cell death. Thus, the spatial and temporal control of acetyl-CoA production by ACLY participates in the mechanism of DNA repair pathway choice.
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206
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Chen X, Lai X, Wu C, Tian Q, Lei T, Pan J, Huang G. Decreased SIRT4 protein levels in endometrioid adenocarcinoma tissues are associated with advanced AJCC stage. Cancer Biomark 2017; 19:419-424. [PMID: 28582846 DOI: 10.3233/cbm-160419] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Xiaoxi Chen
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Xiangwen Lai
- Department of Medical Records and Statistics, The Fifth People’s Hospital, Chengdu, Sichuan, China
| | - Caixia Wu
- Department of Intensive Care Unit, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Qingxin Tian
- Department of Anesthesiology, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Tingting Lei
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jingye Pan
- Department of Intensive Care Unit, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Guoyu Huang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
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207
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She DT, Jo DG, Arumugam TV. Emerging Roles of Sirtuins in Ischemic Stroke. Transl Stroke Res 2017; 8:10.1007/s12975-017-0544-4. [PMID: 28656393 DOI: 10.1007/s12975-017-0544-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 06/02/2017] [Accepted: 06/06/2017] [Indexed: 12/13/2022]
Abstract
Ischemic stroke is one of the leading causes of death worldwide. It is characterized by a sudden disruption of blood flow to the brain causing cell death and damage, which will lead to neurological impairments. In the current state, only one drug is approved to be used in clinical setting and new therapies that confer ischemic neuroprotection are desperately needed. Several targets and pathways have been indicated to be neuroprotective in ischemic stroke, among which the sirtuin family of nicotinamide adenine dinucleotide (NAD+)-dependent deacetylases has emerged as important modulators of several processes in the normal physiology and pathological conditions such as stroke. Recent studies have identified some members of the sirtuin family are able to ameliorate the devastating consequences of ischemic stroke by conferring neuroprotection by means of reducing neuronal cell death, oxidative stress, and neuroinflammation whereas some sirtuins are found to be detrimental in the pathophysiology of ischemic stroke. This review summarizes implications of sirtuins in ischemic stroke and the experimental evidences that demonstrate the potential of sirtuin modulators as neuroprotective therapy for ischemic stroke.
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Affiliation(s)
- David T She
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117597, Singapore
- Neurobiology/Ageing Programme, Life Sciences Institute, National University of Singapore, Singapore, 117456, Singapore
| | - Dong-Gyu Jo
- School of Pharmacy, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Thiruma V Arumugam
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117597, Singapore.
- Neurobiology/Ageing Programme, Life Sciences Institute, National University of Singapore, Singapore, 117456, Singapore.
- School of Pharmacy, Sungkyunkwan University, Suwon, 16419, Republic of Korea.
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208
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Affiliation(s)
- Lifeng Yang
- Laboratory for Systems Biology of Human Diseases, Rice University, Houston, Texas 77005
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005
| | - Sriram Venneti
- Department of Pathology, University of Michigan, Ann Arbor, Michigan 48109
| | - Deepak Nagrath
- Laboratory for Systems Biology of Human Diseases, Rice University, Houston, Texas 77005
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005
- Department of Bioengineering, Rice University, Houston, Texas 77005
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109
- Biointerfaces Institute, University of Michigan, Ann Arbor, Michigan 48109
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209
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Adherence to the Mediterranean Diet and Circulating Levels of Sirtuin 4 in Obese Patients: A Novel Association. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:6101254. [PMID: 28706576 PMCID: PMC5494780 DOI: 10.1155/2017/6101254] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Accepted: 03/16/2017] [Indexed: 01/10/2023]
Abstract
Purpose This study was aimed at evaluating sirtuin 4 (Sirt4) levels in obese individuals, in relation to their adherence to the Mediterranean diet (MD), a healthy dietary pattern characterized by high antioxidant capacity, and markers of visceral fat storage. Subjects/Methods Forty-three obese patients (44% males; BMI: 36.7–58.8 kg/m2) were consecutively included. PREvención con DIeta MEDiterránea (PREDIMED) and the 7-day food records were used to assess the adherence to MD and dietary pattern, respectively. Visceral adiposity index (VAI) was calculated. Sirt4 levels were detected by ELISA method. Results The majority of the obese participants (62.8%) had an average adherence to MD. Compared with average adherers, low adherers had higher BMI, energy intake, and percentage of energy from lipids, mainly saturated fat and polyunsaturated fatty acids (PUFA), and lower Sirt4 levels. After adjusting for BMI, Sirt4 levels remained negatively correlated with VAI. After adjusting for total energy intake, Sirt4 levels remained negatively associated with PREDIMED and consumption of n-3 PUFA, vitamins C and E. The threshold value of PREDIMED predicting the lowest decrease in Sirt4 levels was found at a score of 6. Conclusions Less reduced Sirt4 levels in obese patients adhering to MD suggest a further aspect of the antioxidant advantage of MD.
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210
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Anderson KA, Huynh FK, Fisher-Wellman K, Stuart JD, Peterson BS, Douros JD, Wagner GR, Thompson JW, Madsen AS, Green MF, Sivley RM, Ilkayeva OR, Stevens RD, Backos DS, Capra JA, Olsen CA, Campbell JE, Muoio DM, Grimsrud PA, Hirschey MD. SIRT4 Is a Lysine Deacylase that Controls Leucine Metabolism and Insulin Secretion. Cell Metab 2017; 25:838-855.e15. [PMID: 28380376 PMCID: PMC5444661 DOI: 10.1016/j.cmet.2017.03.003] [Citation(s) in RCA: 223] [Impact Index Per Article: 31.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Revised: 09/26/2016] [Accepted: 03/06/2017] [Indexed: 01/17/2023]
Abstract
Sirtuins are NAD+-dependent protein deacylases that regulate several aspects of metabolism and aging. In contrast to the other mammalian sirtuins, the primary enzymatic activity of mitochondrial sirtuin 4 (SIRT4) and its overall role in metabolic control have remained enigmatic. Using a combination of phylogenetics, structural biology, and enzymology, we show that SIRT4 removes three acyl moieties from lysine residues: methylglutaryl (MG)-, hydroxymethylglutaryl (HMG)-, and 3-methylglutaconyl (MGc)-lysine. The metabolites leading to these post-translational modifications are intermediates in leucine oxidation, and we show a primary role for SIRT4 in controlling this pathway in mice. Furthermore, we find that dysregulated leucine metabolism in SIRT4KO mice leads to elevated basal and stimulated insulin secretion, which progressively develops into glucose intolerance and insulin resistance. These findings identify a robust enzymatic activity for SIRT4, uncover a mechanism controlling branched-chain amino acid flux, and position SIRT4 as a crucial player maintaining insulin secretion and glucose homeostasis during aging.
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Affiliation(s)
- Kristin A Anderson
- Duke Molecular Physiology Institute and Sarah W. Stedman Nutrition and Metabolism Center, Duke University Medical Center, Durham, NC 27701, USA; Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC 27710, USA
| | - Frank K Huynh
- Duke Molecular Physiology Institute and Sarah W. Stedman Nutrition and Metabolism Center, Duke University Medical Center, Durham, NC 27701, USA
| | - Kelsey Fisher-Wellman
- Duke Molecular Physiology Institute and Sarah W. Stedman Nutrition and Metabolism Center, Duke University Medical Center, Durham, NC 27701, USA
| | - J Darren Stuart
- Duke Molecular Physiology Institute and Sarah W. Stedman Nutrition and Metabolism Center, Duke University Medical Center, Durham, NC 27701, USA
| | - Brett S Peterson
- Duke Molecular Physiology Institute and Sarah W. Stedman Nutrition and Metabolism Center, Duke University Medical Center, Durham, NC 27701, USA
| | - Jonathan D Douros
- Duke Molecular Physiology Institute and Sarah W. Stedman Nutrition and Metabolism Center, Duke University Medical Center, Durham, NC 27701, USA
| | - Gregory R Wagner
- Duke Molecular Physiology Institute and Sarah W. Stedman Nutrition and Metabolism Center, Duke University Medical Center, Durham, NC 27701, USA
| | - J Will Thompson
- Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC 27710, USA; Duke Proteomics and Metabolomics Shared Resource, Duke University Medical Center, Durham, NC 27710, USA
| | - Andreas S Madsen
- Center for Biopharmaceuticals and Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Michelle F Green
- Duke Molecular Physiology Institute and Sarah W. Stedman Nutrition and Metabolism Center, Duke University Medical Center, Durham, NC 27701, USA
| | - R Michael Sivley
- Department of Biological Sciences, Department of Biomedical Informatics, Vanderbilt Genetics Institute, Center for Structural Biology, Vanderbilt University, Nashville, TN 37235, USA
| | - Olga R Ilkayeva
- Duke Molecular Physiology Institute and Sarah W. Stedman Nutrition and Metabolism Center, Duke University Medical Center, Durham, NC 27701, USA
| | - Robert D Stevens
- Duke Molecular Physiology Institute and Sarah W. Stedman Nutrition and Metabolism Center, Duke University Medical Center, Durham, NC 27701, USA
| | - Donald S Backos
- Computational Chemistry and Biology Core Facility, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - John A Capra
- Department of Biological Sciences, Department of Biomedical Informatics, Vanderbilt Genetics Institute, Center for Structural Biology, Vanderbilt University, Nashville, TN 37235, USA
| | - Christian A Olsen
- Center for Biopharmaceuticals and Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Jonathan E Campbell
- Duke Molecular Physiology Institute and Sarah W. Stedman Nutrition and Metabolism Center, Duke University Medical Center, Durham, NC 27701, USA; Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC 27710, USA; Department of Medicine, Division of Endocrinology, Metabolism, and Nutrition, Duke University Medical Center, Durham, NC 27710, USA
| | - Deborah M Muoio
- Duke Molecular Physiology Institute and Sarah W. Stedman Nutrition and Metabolism Center, Duke University Medical Center, Durham, NC 27701, USA; Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC 27710, USA; Department of Medicine, Division of Endocrinology, Metabolism, and Nutrition, Duke University Medical Center, Durham, NC 27710, USA
| | - Paul A Grimsrud
- Duke Molecular Physiology Institute and Sarah W. Stedman Nutrition and Metabolism Center, Duke University Medical Center, Durham, NC 27701, USA
| | - Matthew D Hirschey
- Duke Molecular Physiology Institute and Sarah W. Stedman Nutrition and Metabolism Center, Duke University Medical Center, Durham, NC 27701, USA; Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC 27710, USA; Department of Medicine, Division of Endocrinology, Metabolism, and Nutrition, Duke University Medical Center, Durham, NC 27710, USA.
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211
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Monomethyltransferase SETD8 regulates breast cancer metabolism via stabilizing hypoxia-inducible factor 1α. Cancer Lett 2017; 390:1-10. [DOI: 10.1016/j.canlet.2016.12.038] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 12/03/2016] [Accepted: 12/23/2016] [Indexed: 11/20/2022]
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212
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van de Ven RAH, Santos D, Haigis MC. Mitochondrial Sirtuins and Molecular Mechanisms of Aging. Trends Mol Med 2017; 23:320-331. [PMID: 28285806 DOI: 10.1016/j.molmed.2017.02.005] [Citation(s) in RCA: 208] [Impact Index Per Article: 29.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 02/16/2017] [Accepted: 02/16/2017] [Indexed: 02/08/2023]
Abstract
Advancing age is the major risk factor for the development of chronic diseases and is accompanied by changes in metabolic processes and mitochondrial dysfunction. Mitochondrial sirtuins (SIRT3-5) are part of the sirtuin family of NAD+-dependent deacylases and ADP-ribosyl transferases. The dependence on NAD+ links sirtuin enzymatic activity to the metabolic state of the cell, poising them as stress sensors. Recent insights have revealed that SIRT3-5 orchestrate stress responses through coordinated regulation of substrate clusters rather than of a few key metabolic enzymes. Additionally, mitochondrial sirtuin function has been implicated in the protection against age-related pathologies, including neurodegeneration, cardiopathologies, and insulin resistance. In this review, we highlight the molecular targets of SIRT3-5 and discuss their involvement in aging and age-related pathologies.
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Affiliation(s)
| | - Daniel Santos
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA; CNC-Center for Neuroscience and Cell Biology, University of Coimbra, 3004-504 Coimbra, Portugal
| | - Marcia C Haigis
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA.
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213
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Grabowska W, Sikora E, Bielak-Zmijewska A. Sirtuins, a promising target in slowing down the ageing process. Biogerontology 2017; 18:447-476. [PMID: 28258519 PMCID: PMC5514220 DOI: 10.1007/s10522-017-9685-9] [Citation(s) in RCA: 292] [Impact Index Per Article: 41.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Accepted: 02/21/2017] [Indexed: 12/17/2022]
Abstract
Ageing is a plastic process and can be successfully modulated by some biomedical approaches or pharmaceutics. In this manner it is possible to delay or even prevent some age-related pathologies. There are some defined interventions, which give promising results in animal models or even in human studies, resulting in lifespan elongation or healthspan improvement. One of the most promising targets for anti-ageing approaches are proteins belonging to the sirtuin family. Sirtuins were originally discovered as transcription repressors in yeast, however, nowadays they are known to occur in bacteria and eukaryotes (including mammals). In humans the family consists of seven members (SIRT1-7) that possess either mono-ADP ribosyltransferase or deacetylase activity. It is believed that sirtuins play key role during cell response to a variety of stresses, such as oxidative or genotoxic stress and are crucial for cell metabolism. Although some data put in question direct involvement of sirtuins in extending human lifespan, it was documented that proper lifestyle including physical activity and diet can influence healthspan via increasing the level of sirtuins. The search for an activator of sirtuins is one of the most extensive and robust topic of research. Some hopes are put on natural compounds, including curcumin. In this review we summarize the involvement and usefulness of sirtuins in anti-ageing interventions and discuss the potential role of curcumin in sirtuins regulation.
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Affiliation(s)
- Wioleta Grabowska
- Laboratory of Molecular Bases of Aging, Department of Biochemistry, Nencki Institute of Experimental Biology of Polish Academy of Sciences, Pasteur Str. 3, 02-093, Warsaw, Poland
| | - Ewa Sikora
- Laboratory of Molecular Bases of Aging, Department of Biochemistry, Nencki Institute of Experimental Biology of Polish Academy of Sciences, Pasteur Str. 3, 02-093, Warsaw, Poland
| | - Anna Bielak-Zmijewska
- Laboratory of Molecular Bases of Aging, Department of Biochemistry, Nencki Institute of Experimental Biology of Polish Academy of Sciences, Pasteur Str. 3, 02-093, Warsaw, Poland.
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214
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Brown KK, Spinelli JB, Asara JM, Toker A. Adaptive Reprogramming of De Novo Pyrimidine Synthesis Is a Metabolic Vulnerability in Triple-Negative Breast Cancer. Cancer Discov 2017; 7:391-399. [PMID: 28255083 DOI: 10.1158/2159-8290.cd-16-0611] [Citation(s) in RCA: 131] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 11/22/2016] [Accepted: 01/17/2017] [Indexed: 02/06/2023]
Abstract
Chemotherapy resistance is a major barrier to the treatment of triple-negative breast cancer (TNBC), and strategies to circumvent resistance are required. Using in vitro and in vivo metabolic profiling of TNBC cells, we show that an increase in the abundance of pyrimidine nucleotides occurs in response to chemotherapy exposure. Mechanistically, elevation of pyrimidine nucleotides induced by chemotherapy is dependent on increased activity of the de novo pyrimidine synthesis pathway. Pharmacologic inhibition of de novo pyrimidine synthesis sensitizes TNBC cells to genotoxic chemotherapy agents by exacerbating DNA damage. Moreover, combined treatment with doxorubicin and leflunomide, a clinically approved inhibitor of the de novo pyrimidine synthesis pathway, induces regression of TNBC xenografts. Thus, the increase in pyrimidine nucleotide levels observed following chemotherapy exposure represents a metabolic vulnerability that can be exploited to enhance the efficacy of chemotherapy for the treatment of TNBC.Significance: The prognosis for patients with TNBC with residual disease after chemotherapy is poor. We find that chemotherapy agents induce adaptive reprogramming of de novo pyrimidine synthesis and show that this response can be exploited pharmacologically, using clinically approved inhibitors of de novo pyrimidine synthesis, to sensitize TNBC cells to chemotherapy. Cancer Discov; 7(4); 391-9. ©2017 AACR.See related article by Mathur et al., p. 380This article is highlighted in the In This Issue feature, p. 339.
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Affiliation(s)
- Kristin K Brown
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts. .,Cancer Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts.,Ludwig Center at Harvard, Harvard Medical School, Boston, Massachusetts
| | - Jessica B Spinelli
- Ludwig Center at Harvard, Harvard Medical School, Boston, Massachusetts.,Department of Cell Biology, Harvard Medical School, Boston, Massachusetts
| | - John M Asara
- Cancer Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts.,Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Alex Toker
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts. .,Cancer Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts.,Ludwig Center at Harvard, Harvard Medical School, Boston, Massachusetts
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215
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Mayo JC, Sainz RM, González Menéndez P, Cepas V, Tan DX, Reiter RJ. Melatonin and sirtuins: A "not-so unexpected" relationship. J Pineal Res 2017; 62. [PMID: 28109165 DOI: 10.1111/jpi.12391] [Citation(s) in RCA: 120] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Accepted: 01/17/2017] [Indexed: 12/11/2022]
Abstract
Epigenetic modifications, including methylation or acetylation as well as post-transcriptional modifications, are mechanisms used by eukaryotic cells to increase the genome diversity in terms of differential gene expression and protein diversity. Among these modifying enzymes, sirtuins, a class III histone deacetylase (HDAC) enzymes, are of particular importance. Sirtuins regulate the cell cycle, DNA repair, cell survival, and apoptosis, thus having important roles in normal and cancer cells. Sirtuins can also regulate metabolic pathways by changing preference for glycolysis under aerobic conditions as well as glutaminolysis. These actions make sirtuins a major target in numerous physiological processes as well as in other contexts such as calorie restriction-induced anti-aging, cancer, or neurodegenerative disease. Interestingly, melatonin, a nighttime-produced indole synthesized by pineal gland and many other organs, has important cytoprotective effects in many tissues including aging, neurodegenerative diseases, immunomodulation, and cancer. The pleiotropic actions of melatonin in different physiological and pathological conditions indicate that may be basic cellular targeted for the indole. Thus, much research has focused attention on the potential mechanisms of the indole in modulating expression and/or activity of sirtuins. Numerous findings report a rise in activity, especially on SIRT1, in a diversity of cells and animal models after melatonin treatment. This contrasts, however, with data reporting an inhibitory effect of melatonin on this sirtuin in some tumor cells. This review tabulates and discusses the recent findings relating melatonin with sirtuins, particularly SIRT1 and mitochondrial SIRT3, showing the apparent dichotomy with the differential actions documented in normal and in cancer cells.
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Affiliation(s)
- Juan C Mayo
- Departamento de Morfología y Biología Celular, Facultad de Medicina, Universidad de Oviedo, Oviedo, Spain
- Instituto Universitario Oncológico del Principado de Asturias (IUOPA), University of Oviedo, Oviedo, Spain
| | - Rosa M Sainz
- Departamento de Morfología y Biología Celular, Facultad de Medicina, Universidad de Oviedo, Oviedo, Spain
- Instituto Universitario Oncológico del Principado de Asturias (IUOPA), University of Oviedo, Oviedo, Spain
| | - Pedro González Menéndez
- Departamento de Morfología y Biología Celular, Facultad de Medicina, Universidad de Oviedo, Oviedo, Spain
- Instituto Universitario Oncológico del Principado de Asturias (IUOPA), University of Oviedo, Oviedo, Spain
| | - Vanesa Cepas
- Departamento de Morfología y Biología Celular, Facultad de Medicina, Universidad de Oviedo, Oviedo, Spain
- Instituto Universitario Oncológico del Principado de Asturias (IUOPA), University of Oviedo, Oviedo, Spain
| | - Dun-Xian Tan
- Department of Cell Systems and Anatomy, University of Texas Health Science Center at San Antonio (UTHSCSA), San Antonio, TX, USA
| | - Russel J Reiter
- Department of Cell Systems and Anatomy, University of Texas Health Science Center at San Antonio (UTHSCSA), San Antonio, TX, USA
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216
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Raffaghello L, Longo V. Metabolic Alterations at the Crossroad of Aging and Oncogenesis. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2017; 332:1-42. [PMID: 28526131 DOI: 10.1016/bs.ircmb.2017.01.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Aging represents the major risk factor for cancer. Cancer and aging are characterized by a similar dysregulated metabolism consisting in upregulation of glycolysis and downmodulation of oxidative phosphorylation. In this respect, metabolic interventions can be viewed as promising strategies to promote longevity and to prevent or delay age-related disorders including cancer. In this review, we discuss the most promising metabolic approaches including chronic calorie restriction, periodic fasting/fasting-mimicking diets, and pharmacological interventions mimicking calorie restriction. Metabolic interventions can also be viewed as adjuvant anticancer strategies to be combined to standard cancer therapy (chemotherapeutic agents, ionizing radiation, and drugs with specific molecular target), whose major limiting factors are represented by toxicity against healthy cells but also limited efficacy easily circumvented by tumor cells. In fact, conventional cancer therapy is unable to distinguish normal and cancerous cells and thus causes toxic side effects including secondary malignancies, cardiovascular and respiratory complications, endocrinopathies, and other chronic conditions, that resemble and, in some cases, accelerate the age-related disorders and profoundly affect the quality of life. In this scenario, geroscience contributes to the understanding of the mechanisms of protection of normal cells against a cytotoxic agent and finding strategies focused on the preserving healthy cells while enhancing the efficacy of the treatment against malignant cells.
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Affiliation(s)
- L Raffaghello
- Laboratory of Oncology, Istituto Giannina Gaslini, Genova, Italy
| | - V Longo
- Longevity Institute, Davis School of Gerontology, University of Southern California, Los Angeles, CA, United States; IFOM, FIRC Institute of Molecular Oncology, Milano, Italy.
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217
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Deota S, Shukla N, Kolthur-Seetharam U. Spatio-Temporal Control of Cellular and Organismal Physiology by Sirtuins. J Indian Inst Sci 2017. [DOI: 10.1007/s41745-016-0018-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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218
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Castex J, Willmann D, Kanouni T, Arrigoni L, Li Y, Friedrich M, Schleicher M, Wöhrle S, Pearson M, Kraut N, Méret M, Manke T, Metzger E, Schüle R, Günther T. Inactivation of Lsd1 triggers senescence in trophoblast stem cells by induction of Sirt4. Cell Death Dis 2017; 8:e2631. [PMID: 28230862 PMCID: PMC5386490 DOI: 10.1038/cddis.2017.48] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 12/22/2016] [Accepted: 01/23/2017] [Indexed: 11/24/2022]
Abstract
Coordination of energy metabolism is essential for homeostasis of stem cells, whereas an imbalance in energy homeostasis causes disease and accelerated aging. Here we show that deletion or enzymatic inactivation of lysine-specific demethylase 1 (Lsd1) triggers senescence in trophoblast stem cells (TSCs). Genome-wide transcriptional profiling of TSCs following Lsd1 inhibition shows gene set enrichment of aging and metabolic pathways. Consistently, global metabolomic and phenotypic analyses disclose an unbalanced redox status, decreased glutamine anaplerosis and mitochondrial function. Loss of homeostasis is caused by increased expression of sirtuin 4 (Sirt4), a Lsd1-repressed direct target gene. Accordingly, Sirt4 overexpression in wild-type TSCs recapitulates the senescence phenotype initiated by Lsd1 deletion or inhibition. Inversely, absence of Lsd1 enzymatic activity concomitant with knockdown of Sirt4 reestablishes normal glutamine anaplerosis, redox balance and mitochondrial function. In conclusion, by repression of Sirt4, Lsd1 directs the epigenetic control of TSC immortality via maintenance of metabolic flexibility.
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Affiliation(s)
- Josefina Castex
- Urologische Klinik und Zentrale Klinische Forschung, Universitätsklinikum Freiburg, Medizinische Fakultät, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany
| | - Dominica Willmann
- Urologische Klinik und Zentrale Klinische Forschung, Universitätsklinikum Freiburg, Medizinische Fakultät, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany
| | | | - Laura Arrigoni
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany
| | - Yan Li
- metaSysX GmbH, Potsdam-Golm, Germany
| | - Marcel Friedrich
- Urologische Klinik und Zentrale Klinische Forschung, Universitätsklinikum Freiburg, Medizinische Fakultät, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany
| | | | | | | | | | | | - Thomas Manke
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany
| | - Eric Metzger
- Urologische Klinik und Zentrale Klinische Forschung, Universitätsklinikum Freiburg, Medizinische Fakultät, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany.,Deutsches Konsortium für Translationale Krebsforschung, Standort Freiburg, Freiburg, Germany
| | - Roland Schüle
- Urologische Klinik und Zentrale Klinische Forschung, Universitätsklinikum Freiburg, Medizinische Fakultät, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany.,Deutsches Konsortium für Translationale Krebsforschung, Standort Freiburg, Freiburg, Germany.,BIOSS Centre of Biological Signalling Studies, Albert-Ludwigs-University Freiburg, Freiburg, Germany
| | - Thomas Günther
- Urologische Klinik und Zentrale Klinische Forschung, Universitätsklinikum Freiburg, Medizinische Fakultät, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany
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219
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Role of NAD + and mitochondrial sirtuins in cardiac and renal diseases. Nat Rev Nephrol 2017; 13:213-225. [PMID: 28163307 DOI: 10.1038/nrneph.2017.5] [Citation(s) in RCA: 141] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The coenzyme nicotinamide adenine dinucleotide (NAD+) has key roles in the regulation of redox status and energy metabolism. NAD+ depletion is emerging as a major contributor to the pathogenesis of cardiac and renal diseases and NAD+ repletion strategies have shown therapeutic potential as a means to restore healthy metabolism and physiological function. The pleotropic roles of NAD+ enable several possible avenues by which repletion of this coenzyme could have therapeutic efficacy. In particular, NAD+ functions as a co-substrate in deacylation reactions carried out by the sirtuin family of enzymes. These NAD+-dependent deacylases control several aspects of metabolism and a wealth of data suggests that boosting sirtuin activity via NAD+ supplementation might be a promising therapy for cardiac and renal pathologies. This Review summarizes the role of NAD+ metabolism in the heart and kidney, and highlights the mitochondrial sirtuins as mediators of some of the beneficial effects of NAD+-boosting therapies in preclinical animal models. We surmise that modulating the NAD+-sirtuin axis is a clinically relevant approach to develop new therapies for cardiac and renal diseases.
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220
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Cai X, Ding H, Liu Y, Pan G, Li Q, Yang Z, Liu W. Expression of HMGB2 indicates worse survival of patients and is required for the maintenance of Warburg effect in pancreatic cancer. Acta Biochim Biophys Sin (Shanghai) 2017; 49:119-127. [PMID: 28069585 DOI: 10.1093/abbs/gmw124] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Indexed: 01/05/2023] Open
Abstract
High mobility group proteins (HMGs) are the second most abundant chromatin proteins and exert global genomic functions in the establishment of active or inactive chromatin domains. Through interaction with nucleosomes, transcription factors, nucleosome-remodeling machines and histones, the HMGs family proteins contribute to the fine tuning of transcription in response to rapid environmental changes. Mammalian high mobility group Bs (HMGBs) are characterized by two tandem HMG box domains followed by a long acidic tail. Recent studies demonstrated that high expression of HMGBs has been found in many cancers, such as prostate, kidney, ovarian, and gastric cancers. However, their roles in pancreatic cancer have seldom been reported. In this study, we assessed the diagnostic and prognostic values of HMGBs proteins, including HMGB1, HMGB2, and HMGB3, in pancreatic cancer from the Cancer Genome Atlas (TCGA) dataset. Our results demonstrated that HMGB2 predicted poor prognosis in pancreatic cancer. In vitro studies demonstrated that silencing HMGB2 inhibited cell proliferation and viability. Mechanistically, our results demonstrated that silencing HMGB2 decreased hypoxia inducible factor 1α (HIF1α) protein level and inhibited HIF1α-mediated glycolysis process. Further analysis indicated that HIF1α-targeted glycolytic genes, including GLUT1, HK2, and LDHA, are all prognostic factors and positively correlated with HMGB2 expression. Taken together, we discovered new prognostic and predictive markers for pancreatic cancer, and shed light on the novel function of HMGB2 in glycolytic control in cancer.
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Affiliation(s)
- Xin Cai
- Department of Radiotherapy, Shanghai Proton and Heavy Ion Center, Shanghai 201321, China
| | - Hongjian Ding
- Department of General Surgery, Fudan University, Minhang Hospital, Shanghai 201199, China
| | - Yanxia Liu
- Department of Emergency, Fudan University, Minhang Hospital, Shanghai 201199, China
| | - Gaofeng Pan
- Department of General Surgery, Fudan University, Minhang Hospital, Shanghai 201199, China
| | - Qingguo Li
- Department of Colorectal Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Zhen Yang
- Department of General Surgery, Fudan University, Minhang Hospital, Shanghai 201199, China
| | - Weiyan Liu
- Department of General Surgery, Fudan University, Minhang Hospital, Shanghai 201199, China
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221
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Qu J, Sun W, Zhong J, Lv H, Zhu M, Xu J, Jin N, Xie Z, Tan M, Lin SH, Geng M, Ding J, Huang M. Phosphoglycerate mutase 1 regulates dNTP pool and promotes homologous recombination repair in cancer cells. J Cell Biol 2017; 216:409-424. [PMID: 28122957 PMCID: PMC5294784 DOI: 10.1083/jcb.201607008] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Revised: 11/02/2016] [Accepted: 01/17/2017] [Indexed: 02/04/2023] Open
Abstract
Phosphoglycerate mutase 1 (PGAM1) regulates metabolism in cancer cells. Qu et al. show that PGAM1 maintains the intracellular dNTP pool, promotes the stability of CTBP-interacting protein, and is required for homologous recombination repair. PGAM1 inhibition sensitizes BRCA1/2-proficient breast cancer to PARP inhibitors. Glycolytic enzymes are known to play pivotal roles in cancer cell survival, yet their molecular mechanisms remain poorly understood. Phosphoglycerate mutase 1 (PGAM1) is an important glycolytic enzyme that coordinates glycolysis, pentose phosphate pathway, and serine biosynthesis in cancer cells. Herein, we report that PGAM1 is required for homologous recombination (HR) repair of DNA double-strand breaks (DSBs) caused by DNA-damaging agents. Mechanistically, PGAM1 facilitates DSB end resection by regulating the stability of CTBP-interacting protein (CtIP). Knockdown of PGAM1 in cancer cells accelerates CtIP degradation through deprivation of the intracellular deoxyribonucleotide triphosphate pool and associated activation of the p53/p73 pathway. Enzymatic inhibition of PGAM1 decreases CtIP protein levels, impairs HR repair, and hence sensitizes BRCA1/2-proficient breast cancer to poly(ADP-ribose) polymerase (PARP) inhibitors. Together, this study identifies a metabolically dependent function of PGAM1 in promoting HR repair and reveals a potential therapeutic opportunity for PGAM1 inhibitors in combination with PARP inhibitors.
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Affiliation(s)
- Jia Qu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China.,State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Wenyi Sun
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Jie Zhong
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory for Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Hao Lv
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Mingrui Zhu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Jun Xu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Nan Jin
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Zuoquan Xie
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Minjia Tan
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Shu-Hai Lin
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory for Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Meiyu Geng
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Jian Ding
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China .,State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Min Huang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
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222
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Lang A, Grether-Beck S, Singh M, Kuck F, Jakob S, Kefalas A, Altinoluk-Hambüchen S, Graffmann N, Schneider M, Lindecke A, Brenden H, Felsner I, Ezzahoini H, Marini A, Weinhold S, Vierkötter A, Tigges J, Schmidt S, Stühler K, Köhrer K, Uhrberg M, Haendeler J, Krutmann J, Piekorz RP. MicroRNA-15b regulates mitochondrial ROS production and the senescence-associated secretory phenotype through sirtuin 4/SIRT4. Aging (Albany NY) 2017; 8:484-505. [PMID: 26959556 PMCID: PMC4833141 DOI: 10.18632/aging.100905] [Citation(s) in RCA: 91] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Mammalian sirtuins are involved in the control of metabolism and life-span regulation. Here, we link the mitochondrial sirtuin SIRT4 with cellular senescence, skin aging, and mitochondrial dysfunction. SIRT4 expression significantly increased in human dermal fibroblasts undergoing replicative or stress-induced senescence triggered by UVB or gamma-irradiation. In-vivo, SIRT4 mRNA levels were upregulated in photoaged vs. non-photoaged human skin. Interestingly, in all models of cellular senescence and in photoaged skin, upregulation of SIRT4 expression was associated with decreased levels of miR-15b. The latter was causally linked to increased SIRT4 expression because miR-15b targets a functional binding site in the SIRT4 gene and transfection of oligonucleotides mimicking miR-15b function prevented SIRT4 upregulation in senescent cells. Importantly, increased SIRT4 negatively impacted on mitochondrial functions and contributed to the development of a senescent phenotype. Accordingly, we observed that inhibition of miR-15b, in a SIRT4-dependent manner, increased generation of mitochondrial reactive oxygen species, decreased mitochondrial membrane potential, and modulated mRNA levels of nuclear encoded mitochondrial genes and components of the senescence-associated secretory phenotype (SASP). Thus, miR-15b is a negative regulator of stress-induced SIRT4 expression thereby counteracting senescence associated mitochondrial dysfunction and regulating the SASP and possibly organ aging, such as photoaging of human skin.
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Affiliation(s)
- Alexander Lang
- Institut für Biochemie und Molekularbiologie II, Universitätsklinikum der Heinrich-Heine-Universität, Düsseldorf, Germany.,Molecular Proteomics Laboratory, BMFZ, Universitätsklinikum der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Susanne Grether-Beck
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Madhurendra Singh
- Institut für Biochemie und Molekularbiologie II, Universitätsklinikum der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Fabian Kuck
- Institut für Biochemie und Molekularbiologie II, Universitätsklinikum der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Sascha Jakob
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Andreas Kefalas
- Institut für Biochemie und Molekularbiologie II, Universitätsklinikum der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Simone Altinoluk-Hambüchen
- Institut für Biochemie und Molekularbiologie II, Universitätsklinikum der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Nina Graffmann
- Institut für Transplantationsdiagnostik und Zelltherapeutika (ITZ), Düsseldorf, Germany
| | - Maren Schneider
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Antje Lindecke
- Biologisch-Medizinisches Forschungszentrum (BMFZ), Düsseldorf, Germany
| | - Heidi Brenden
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Ingo Felsner
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Hakima Ezzahoini
- Institut für Biochemie und Molekularbiologie II, Universitätsklinikum der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Alessandra Marini
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Sandra Weinhold
- Institut für Transplantationsdiagnostik und Zelltherapeutika (ITZ), Düsseldorf, Germany
| | - Andrea Vierkötter
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Julia Tigges
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Stephan Schmidt
- Institut für Biochemie und Molekularbiologie II, Universitätsklinikum der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Kai Stühler
- Molecular Proteomics Laboratory, BMFZ, Universitätsklinikum der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Karl Köhrer
- Biologisch-Medizinisches Forschungszentrum (BMFZ), Düsseldorf, Germany
| | - Markus Uhrberg
- Institut für Transplantationsdiagnostik und Zelltherapeutika (ITZ), Düsseldorf, Germany
| | - Judith Haendeler
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Jean Krutmann
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany.,University of Düsseldorf, Medical Faculty, Düsseldorf, Germany
| | - Roland P Piekorz
- Institut für Biochemie und Molekularbiologie II, Universitätsklinikum der Heinrich-Heine-Universität, Düsseldorf, Germany
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223
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Sirtuins Expression and Their Role in Retinal Diseases. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:3187594. [PMID: 28197299 PMCID: PMC5288547 DOI: 10.1155/2017/3187594] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 12/13/2016] [Indexed: 01/28/2023]
Abstract
Sirtuins have received considerable attention since the discovery that silent information regulator 2 (Sir2) extends the lifespan of yeast. Sir2, a nicotinamide adenine dinucleotide- (NAD-) dependent histone deacetylase, serves as both a transcriptional effector and energy sensor. Oxidative stress and apoptosis are implicated in the pathogenesis of neurodegenerative eye diseases. Sirtuins confer protection against oxidative stress and retinal degeneration. In mammals, the sirtuin (SIRT) family consists of seven proteins (SIRT1–SIRT7). These vary in tissue specificity, subcellular localization, and enzymatic activity and targets. In this review, we present the current knowledge of the sirtuin family and discuss their structure, cellular location, and biological function with a primary focus on their role in different neuroophthalmic diseases including glaucoma, optic neuritis, and age-related macular degeneration. The potential role of certain therapeutic targets is also described.
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224
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Jiang ZF, Wang M, Xu JL, Ning YJ. Hypoxia promotes mitochondrial glutamine metabolism through HIF1α-GDH pathway in human lung cancer cells. Biochem Biophys Res Commun 2017; 483:32-38. [PMID: 28065856 DOI: 10.1016/j.bbrc.2017.01.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Accepted: 01/04/2017] [Indexed: 01/09/2023]
Abstract
Drug-resistance is common in human lung cancer therapy. Hypoxia remarkably contributes to drug-resistance in lung cancer but the underlying mechanism remains elusive. Here we demonstrate that hypoxia-induced glutamine metabolism is involved in drug resistance in lung cancer cells. Hypoxia increases glutamine up-take, glutamate to α-ketoglutarate flux and the generation of ATP in lung cancer cells by up-regulating the expression of glutamate dehydrogenase (GDH). Hypoxia-induced expression of GDH relies on the up-regulation of HIF1α but not HIF2α. HIF1α binds the promoter of GDH and promotes the transcription of GDH gene in lung cancer cells. Finally, we show that GDH represses cisplatin-induced cell apoptosis and repression of colony formation, indicating that GDH contributes to drug-resistance in lung cancer cells. In conclusion, HIF1α-GDH pathway regulates glutamine metabolism and ATP production upon hypoxia stress and contributes to drug-resistance in human lung cancer cells.
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Affiliation(s)
- Zi-Feng Jiang
- Department of Pulmonary Medicine, Anhui Geriatric Institute, The First Affiliated Hospital of Anhui Medical University, Jixi Road 218, Hefei 230022, Anhui, PR China.
| | - Min Wang
- Department of Respiratory Medicine, Anhui Chest Hospital, Jixi Road 397, Hefei 230022, Anhui, PR China
| | - Jian-Lin Xu
- Department of Pulmonary, Shanghai Chest Hospital, Shanghai Jiaotong University, Shanghai 200030, PR China
| | - Ya-Jing Ning
- Department of Pulmonary Medicine, Anhui Geriatric Institute, The First Affiliated Hospital of Anhui Medical University, Jixi Road 218, Hefei 230022, Anhui, PR China
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225
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Correia M, Perestrelo T, Rodrigues AS, Ribeiro MF, Pereira SL, Sousa MI, Ramalho-Santos J. Sirtuins in metabolism, stemness and differentiation. Biochim Biophys Acta Gen Subj 2017; 1861:3444-3455. [DOI: 10.1016/j.bbagen.2016.09.008] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 08/16/2016] [Accepted: 09/06/2016] [Indexed: 12/20/2022]
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226
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STAT3 Undergoes Acetylation-dependent Mitochondrial Translocation to Regulate Pyruvate Metabolism. Sci Rep 2016; 6:39517. [PMID: 28004755 PMCID: PMC5177931 DOI: 10.1038/srep39517] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Accepted: 11/24/2016] [Indexed: 12/11/2022] Open
Abstract
Cytoplasmic STAT3, after activation by growth factors, translocates to different subcellular compartments, including nuclei and mitochondria, where it carries out different biological functions. However, the precise mechanism by which STAT3 undergoes mitochondrial translocation and subsequently regulates the tricarboxylic acid (TCA) cycle-electron transport chain (ETC) remains poorly understood. Here, we clarify this process by visualizing STAT3 acetylation in starved cells after serum reintroduction or insulin stimulation. CBP-acetylated STAT3 undergoes mitochondrial translocation in response to serum introduction or insulin stimulation. In mitochondria, STAT3 associates with the pyruvate dehydrogenase complex E1 (PDC-E1) and subsequently accelerates the conversion of pyruvate to acetyl-CoA, elevates the mitochondrial membrane potential, and promotes ATP synthesis. SIRT5 deacetylates STAT3, thereby inhibiting its function in mitochondrial pyruvate metabolism. In the A549 lung cancer cell line, constitutively acetylated STAT3 localizes to mitochondria, where it maintains the mitochondrial membrane potential and ATP synthesis in an active state.
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227
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SIRT4 inhibits malignancy progression of NSCLCs, through mitochondrial dynamics mediated by the ERK-Drp1 pathway. Oncogene 2016; 36:2724-2736. [DOI: 10.1038/onc.2016.425] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Revised: 09/19/2016] [Accepted: 10/10/2016] [Indexed: 12/19/2022]
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228
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Wang YP, Zhou W, Wang J, Huang X, Zuo Y, Wang TS, Gao X, Xu YY, Zou SW, Liu YB, Cheng JK, Lei QY. Arginine Methylation of MDH1 by CARM1 Inhibits Glutamine Metabolism and Suppresses Pancreatic Cancer. Mol Cell 2016; 64:673-687. [PMID: 27840030 DOI: 10.1016/j.molcel.2016.09.028] [Citation(s) in RCA: 136] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 08/24/2016] [Accepted: 09/21/2016] [Indexed: 12/28/2022]
Abstract
Distinctive from their normal counterparts, cancer cells exhibit unique metabolic dependencies on glutamine to fuel anabolic processes. Specifically, pancreatic ductal adenocarcinoma (PDAC) cells rely on an unconventional metabolic pathway catalyzed by aspartate aminotransferase, malate dehydrogenase 1 (MDH1), and malic enzyme 1 to rewire glutamine metabolism and support nicotinamide adenine dinucleotide phosphate (NADPH) production. Here, we report that methylation on arginine 248 (R248) negatively regulates MDH1. Protein arginine methyltransferase 4 (PRMT4/CARM1) methylates and inhibits MDH1 by disrupting its dimerization. Knockdown of MDH1 represses mitochondria respiration and inhibits glutamine metabolism, which sensitizes PDAC cells to oxidative stress and suppresses cell proliferation. Meanwhile, re-expression of wild-type MDH1, but not its methylation-mimetic mutant, protects cells from oxidative injury and restores cell growth and clonogenic activity. Importantly, MDH1 is hypomethylated at R248 in clinical PDAC samples. Our study reveals that arginine methylation of MDH1 by CARM1 regulates cellular redox homeostasis and suppresses glutamine metabolism of pancreatic cancer.
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Affiliation(s)
- Yi-Ping Wang
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.
| | - Wei Zhou
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Jian Wang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences and Cancer Metabolism Laboratory, Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
| | - Xian Huang
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Yong Zuo
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Tian-Shi Wang
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Xue Gao
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences and Cancer Metabolism Laboratory, Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
| | - Ying-Ying Xu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences and Cancer Metabolism Laboratory, Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
| | - Shao-Wu Zou
- Department of Hepatopancreatobiliary Surgery, Shanghai Tenth People's Hospital, Tong Ji University, Shanghai 200072, China
| | - Ying-Bin Liu
- Department of General Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Jin-Ke Cheng
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.
| | - Qun-Ying Lei
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences and Cancer Metabolism Laboratory, Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China.
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229
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Osborne B, Bentley NL, Montgomery MK, Turner N. The role of mitochondrial sirtuins in health and disease. Free Radic Biol Med 2016; 100:164-174. [PMID: 27164052 DOI: 10.1016/j.freeradbiomed.2016.04.197] [Citation(s) in RCA: 122] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Revised: 04/21/2016] [Accepted: 04/29/2016] [Indexed: 01/15/2023]
Abstract
Mitochondria play a critical role in energy production, cell signalling and cell survival. Defects in mitochondrial function contribute to the ageing process and ageing-related disorders such as metabolic disease, cancer, and neurodegeneration. The sirtuin family of deacylase enzymes have a variety of subcellular localisations and have been found to remove a growing list of post-translational acyl modifications from target proteins. SIRT3, SIRT4, and SIRT5 are found primarily located in the mitochondria, and are involved in many of the key processes of this organelle. SIRT3 has been the subject of intense research and is primarily a deacetylase thought to function as a mitochondrial fidelity protein, with roles in mitochondrial substrate metabolism, protection against oxidative stress, and cell survival pathways. Less is known about the functional targets of SIRT4, which has deacetylase, ADP-ribosylase, and a newly-described lipoamidase function, although key roles in lipid and glutamine metabolism have been reported. SIRT5 modulates a host of newly-discovered acyl modifications including succinylation, malonylation, and glutarylation in both mitochondrial and extra-mitochondrial compartments, however the functional significance of SIRT5 in the regulation of many of its proposed target proteins remains to be discovered. Because of their influence on a broad range of pathways, SIRT3, SIRT4, and SIRT5 are implicated in a range of disease-states including metabolic disease such as diabetes, neurodegenerative diseases, cancer, and ageing-related disorders such as hearing-loss and cardiac dysfunction. We review the current knowledge on the function of the three mitochondrial sirtuins, their role in disease, and the current outstanding questions in the field.
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Affiliation(s)
- Brenna Osborne
- Department of Pharmacology, School of Medical Sciences, UNSW Australia, Sydney, NSW, Australia
| | - Nicholas L Bentley
- Department of Pharmacology, School of Medical Sciences, UNSW Australia, Sydney, NSW, Australia
| | - Magdalene K Montgomery
- Department of Pharmacology, School of Medical Sciences, UNSW Australia, Sydney, NSW, Australia
| | - Nigel Turner
- Department of Pharmacology, School of Medical Sciences, UNSW Australia, Sydney, NSW, Australia.
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230
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Mitochondrial Sirtuin Network Reveals Dynamic SIRT3-Dependent Deacetylation in Response to Membrane Depolarization. Cell 2016; 167:985-1000.e21. [PMID: 27881304 DOI: 10.1016/j.cell.2016.10.016] [Citation(s) in RCA: 229] [Impact Index Per Article: 28.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Revised: 07/25/2016] [Accepted: 10/07/2016] [Indexed: 11/21/2022]
Abstract
Mitochondrial sirtuins, SIRT3-5, are NAD+-dependent deacylases and ADP-ribosyltransferases that are critical for stress responses. However, a comprehensive understanding of sirtuin targets, regulation of sirtuin activity, and the relationships between sirtuins remains a key challenge in mitochondrial physiology. Here, we employ systematic interaction proteomics to elucidate the mitochondrial sirtuin protein interaction landscape. This work reveals sirtuin interactions with numerous functional modules within mitochondria, identifies candidate sirtuin substrates, and uncovers a fundamental role for sequestration of SIRT3 by ATP synthase in mitochondrial homeostasis. In healthy mitochondria, a pool of SIRT3 binds ATP synthase, but upon matrix pH reduction with concomitant loss of mitochondrial membrane potential, SIRT3 dissociates. This release correlates with rapid deacetylation of matrix proteins, and SIRT3 is required for recovery of membrane potential. In vitro reconstitution experiments, as well as analysis of CRISPR/Cas9-engineered cells, indicate that pH-dependent SIRT3 release requires H135 in the ATP5O subunit of ATP synthase. Our SIRT3-5 interaction network provides a framework for discovering novel biological functions regulated by mitochondrial sirtuins.
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231
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Brace LE, Vose SC, Stanya K, Gathungu RM, Marur VR, Longchamp A, Treviño-Villarreal H, Mejia P, Vargas D, Inouye K, Bronson RT, Lee CH, Neilan E, Kristal BS, Mitchell JR. Increased oxidative phosphorylation in response to acute and chronic DNA damage. NPJ Aging Mech Dis 2016; 2:16022. [PMID: 28721274 PMCID: PMC5514997 DOI: 10.1038/npjamd.2016.22] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Revised: 06/11/2016] [Accepted: 07/25/2016] [Indexed: 12/25/2022] Open
Abstract
Accumulation of DNA damage is intricately linked to aging, aging-related diseases and progeroid syndromes such as Cockayne syndrome (CS). Free radicals from endogenous oxidative energy metabolism can damage DNA, however the potential of acute or chronic DNA damage to modulate cellular and/or organismal energy metabolism remains largely unexplored. We modeled chronic endogenous genotoxic stress using a DNA repair-deficient Csa-/-|Xpa-/- mouse model of CS. Exogenous genotoxic stress was modeled in mice in vivo and primary cells in vitro treated with different genotoxins giving rise to diverse spectrums of lesions, including ultraviolet radiation, intrastrand crosslinking agents and ionizing radiation. Both chronic endogenous and acute exogenous genotoxic stress increased mitochondrial fatty acid oxidation (FAO) on the organismal level, manifested by increased oxygen consumption, reduced respiratory exchange ratio, progressive adipose loss and increased FAO in tissues ex vivo. In multiple primary cell types, the metabolic response to different genotoxins manifested as a cell-autonomous increase in oxidative phosphorylation (OXPHOS) subsequent to a transient decline in steady-state NAD+ and ATP levels, and required the DNA damage sensor PARP-1 and energy-sensing kinase AMPK. We conclude that increased FAO/OXPHOS is a general, beneficial, adaptive response to DNA damage on cellular and organismal levels, illustrating a fundamental link between genotoxic stress and energy metabolism driven by the energetic cost of DNA damage. Our study points to therapeutic opportunities to mitigate detrimental effects of DNA damage on primary cells in the context of radio/chemotherapy or progeroid syndromes.
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Affiliation(s)
- Lear E Brace
- Department of Genetics and Complex Diseases, Harvard T. H. Chan School of Public Health, Boston, MA, USA
| | - Sarah C Vose
- Division of Environmental Health, Vermont Department of Health, Burlington, VT, USA
| | - Kristopher Stanya
- Department of Genetics and Complex Diseases, Harvard T. H. Chan School of Public Health, Boston, MA, USA
| | - Rose M Gathungu
- Department of Neurosurgery, Harvard Medical School, Brigham and Women's Hospital, Boston, MA, USA
| | - Vasant R Marur
- Department of Neurosurgery, Harvard Medical School, Brigham and Women's Hospital, Boston, MA, USA
| | - Alban Longchamp
- Department of Genetics and Complex Diseases, Harvard T. H. Chan School of Public Health, Boston, MA, USA
| | | | - Pedro Mejia
- Department of Genetics and Complex Diseases, Harvard T. H. Chan School of Public Health, Boston, MA, USA
| | - Dorathy Vargas
- Department of Genetics and Complex Diseases, Harvard T. H. Chan School of Public Health, Boston, MA, USA
| | - Karen Inouye
- Department of Genetics and Complex Diseases, Harvard T. H. Chan School of Public Health, Boston, MA, USA
| | - Roderick T Bronson
- Rodent Histopathology Core, Department of Pathology, Harvard Medical School, Boston, MA, USA
| | - Chih-Hao Lee
- Department of Genetics and Complex Diseases, Harvard T. H. Chan School of Public Health, Boston, MA, USA
| | - Edward Neilan
- Genetics and Metabolism Division, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Bruce S Kristal
- Department of Neurosurgery, Harvard Medical School, Brigham and Women's Hospital, Boston, MA, USA
| | - James R Mitchell
- Department of Genetics and Complex Diseases, Harvard T. H. Chan School of Public Health, Boston, MA, USA
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232
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Abstract
The resurgence of research into cancer metabolism has recently broadened interests beyond glucose and the Warburg effect to other nutrients, including glutamine. Because oncogenic alterations of metabolism render cancer cells addicted to nutrients, pathways involved in glycolysis or glutaminolysis could be exploited for therapeutic purposes. In this Review, we provide an updated overview of glutamine metabolism and its involvement in tumorigenesis in vitro and in vivo, and explore the recent potential applications of basic science discoveries in the clinical setting.
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Affiliation(s)
- Brian J. Altman
- Abramson Family Cancer Research Institute, Perelman School of
Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Abramson Cancer Center, Perelman School of Medicine, University of
Pennsylvania, Philadelphia, PA, 19104, USA
- Division of Hematology-Oncology, Department of Medicine, Perelman
School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Zachary E. Stine
- Abramson Family Cancer Research Institute, Perelman School of
Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Abramson Cancer Center, Perelman School of Medicine, University of
Pennsylvania, Philadelphia, PA, 19104, USA
- Division of Hematology-Oncology, Department of Medicine, Perelman
School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Chi V. Dang
- Abramson Family Cancer Research Institute, Perelman School of
Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Abramson Cancer Center, Perelman School of Medicine, University of
Pennsylvania, Philadelphia, PA, 19104, USA
- Division of Hematology-Oncology, Department of Medicine, Perelman
School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
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233
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Wu X, Cao N, Fenech M, Wang X. Role of Sirtuins in Maintenance of Genomic Stability: Relevance to Cancer and Healthy Aging. DNA Cell Biol 2016; 35:542-575. [DOI: 10.1089/dna.2016.3280] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Affiliation(s)
- Xiayu Wu
- School of Life Sciences, The Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Yunnan Normal University, Kunming, Yunnan, China
| | - Neng Cao
- School of Life Sciences, The Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Yunnan Normal University, Kunming, Yunnan, China
| | - Michael Fenech
- Genome Health and Personalized Nutrition, Commonwealth Scientific and Industrial Research Organization Food and Nutrition, Adelaide, South Australia, Australia
| | - Xu Wang
- School of Life Sciences, The Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Yunnan Normal University, Kunming, Yunnan, China
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234
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Buler M, Andersson U, Hakkola J. Who watches the watchmen? Regulation of the expression and activity of sirtuins. FASEB J 2016; 30:3942-3960. [PMID: 27591175 DOI: 10.1096/fj.201600410rr] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 08/22/2016] [Indexed: 01/07/2023]
Abstract
Sirtuins (SIRT1-7) are a family of nicotine adenine dinucleotide (NAD+)-dependent enzymes that catalyze post-translational modifications of proteins. Together, they regulate crucial cellular functions and are traditionally associated with aging and longevity. Dysregulation of sirtuins plays an important role in major diseases, including cancer and metabolic, cardiac, and neurodegerative diseases. They are extensively regulated in response to a wide range of stimuli, including nutritional and metabolic challenges, inflammatory signals or hypoxic and oxidative stress. Each sirtuin is regulated individually in a tissue- and cell-specific manner. The control of sirtuin expression involves all the major points of regulation, including transcriptional and post-translational mechanisms and microRNAs. Collectively, these mechanisms control the protein levels, localization, and enzymatic activity of sirtuins. In many cases, the regulators of sirtuin expression are also their substrates, which lead to formation of intricate regulatory networks and extensive feedback loops. In this review, we highlight the mechanisms mediating the physiologic and pathologic regulation of sirtuin expression and activity. We also discuss the consequences of this regulation on sirtuin function and cellular physiology.-Buler, M., Andersson, U., Hakkola, J. Who watches the watchmen? Regulation of the expression and activity of sirtuins.
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Affiliation(s)
- Marcin Buler
- Drug Safety and Metabolism, AstraZeneca R&D, Göteborg, Sweden
| | - Ulf Andersson
- Drug Safety and Metabolism, AstraZeneca R&D, Göteborg, Sweden
| | - Jukka Hakkola
- Research Unit of Biomedicine, Pharmacology and Toxicology, University of Oulu, Oulu, Finland; and .,Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
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235
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Chen L, Cui H, Fang J, Deng H, Kuang P, Guo H, Wang X, Zhao L. Glutamine deprivation plus BPTES alters etoposide- and cisplatin-induced apoptosis in triple negative breast cancer cells. Oncotarget 2016; 7:54691-54701. [PMID: 27419628 PMCID: PMC5342373 DOI: 10.18632/oncotarget.10579] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Accepted: 06/30/2016] [Indexed: 12/25/2022] Open
Abstract
Glutamine provides cancer cells with the energy required to synthesize macromolecules. Methods which block glutamine metabolism in treatment of breast cancer inhibit oncogenic transformation and tumor growth. We investigated whether inhibiting glutamine metabolism produces effects that are synergistic with those produced by drugs which damage DNA in triple-negative breast cancer cells. HCC1937 and BT-549 breast cancer cells were co-treated with either cisplatin or etoposide in combination with BPTES (a specific inhibitor of glutaminase 1) or exposure to a glutamine-free medium, and the cell proliferation and cell apoptosis were measured by flow cytometry, immunoblotting studies, and CCK-8 assays. The results showed that both glutamine deprivation and BPTES pretreatments increased the toxic effects of cisplatin and etoposide on HCC1937 cells, as demonstrated by their reduced proliferation, increased expression of apoptosis-related proteins (cleaved-PARP, cleaved-caspase 9, and cleaved-caspase 3) and decreased Bcl-2/BAX ratio. However, in BT-549 cells, glutamine deprivation and BPTES treatment increased etoposide-induced apoptosis only when used with higher concentrations of etoposide, and the effect on cisplatin-induced apoptosis was minimal. These results suggest that the anti-cancer effects produced by a combined approach of inhibiting glutamine metabolism and administering common chemotherapeutic agents correlate with the tumor cell type and specific drugs being administered.
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Affiliation(s)
- Lian Chen
- College of Veterinary Medicine, Sichuan Agricultural University, Ya'an 625014, China
| | - Hengmin Cui
- College of Veterinary Medicine, Sichuan Agricultural University, Ya'an 625014, China
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Ya'an 625014, China
| | - Jing Fang
- College of Veterinary Medicine, Sichuan Agricultural University, Ya'an 625014, China
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Ya'an 625014, China
| | - Huidan Deng
- College of Veterinary Medicine, Sichuan Agricultural University, Ya'an 625014, China
| | - Ping Kuang
- College of Veterinary Medicine, Sichuan Agricultural University, Ya'an 625014, China
| | - Hongrui Guo
- College of Veterinary Medicine, Sichuan Agricultural University, Ya'an 625014, China
| | - Xun Wang
- College of Veterinary Medicine, Sichuan Agricultural University, Ya'an 625014, China
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Ya'an 625014, China
| | - Ling Zhao
- College of Veterinary Medicine, Sichuan Agricultural University, Ya'an 625014, China
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Ya'an 625014, China
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236
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Shi Q, Liu T, Zhang X, Geng J, He X, Nu M, Pang D. Decreased sirtuin 4 expression is associated with poor prognosis in patients with invasive breast cancer. Oncol Lett 2016; 12:2606-2612. [PMID: 27698834 PMCID: PMC5038587 DOI: 10.3892/ol.2016.5021] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Accepted: 07/07/2016] [Indexed: 12/29/2022] Open
Abstract
Aberrant metabolism is a hallmark of human cancer. Glutamine metabolism has been identified as a central metabolic pathway in cancer and thus, targeting glutamine metabolism may exhibit therapeutic potential. Sirtuin 4 (SIRT4) is an important molecule that mediates the blockade of glutamine catabolism by inhibiting glutamate dehydrogenase. In the present study, SIRT4 protein expression levels were analyzed in 409 breast cancer tissues and 241 paired adjacent non-cancerous tissues by immunohistochemical analysis and the correlation between SIRT4 expression and the clinicopathological features was evaluated. SIRT4 protein was markedly increased in the breast cancer cells compared with adjacent non-tumor mammary cells and was correlated with estrogen receptor, progesterone receptor, nuclear-associated antigen Ki-67 and tumor protein p53 status, as well as breast cancer subtypes. Furthermore, low SIRT4 expression was associated with poor overall survival in breast cancers patients, particularly in Luminal A patients. Univariate and multivariate analyses confirmed that increased SIRT4 expression was an independent predictive factor of good prognosis for breast cancer patients. In conclusion, SIRT4 expression represents a significant favorable prognostic factor for patients with invasive breast cancer.
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Affiliation(s)
- Qingyu Shi
- Department of Breast Surgery, The Third Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150040, P.R. China
| | - Tong Liu
- Department of Breast Surgery, The Third Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150040, P.R. China
| | - Xianyu Zhang
- Department of Breast Surgery, The Third Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150040, P.R. China
| | - Jingshu Geng
- Department of Pathology, The Third Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150040, P.R. China
| | - Xiaohui He
- Department of Medical Records, The Third Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150040, P.R. China
| | - Ming Nu
- Department of Breast Surgery, The Third Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150040, P.R. China
| | - Da Pang
- Department of Breast Surgery, The Third Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150040, P.R. China
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237
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Farnie G, Sotgia F, Lisanti MP. High mitochondrial mass identifies a sub-population of stem-like cancer cells that are chemo-resistant. Oncotarget 2016; 6:30472-86. [PMID: 26421710 PMCID: PMC4741545 DOI: 10.18632/oncotarget.5401] [Citation(s) in RCA: 157] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Accepted: 09/17/2015] [Indexed: 12/15/2022] Open
Abstract
Chemo-resistance is a clinical barrier to more effective anti-cancer therapy. In this context, cancer stem-like cells (CSCs) are thought to be chemo-resistant, resulting in tumor recurrence and distant metastasis. Our hypothesis is that chemo-resistance in CSCs is driven, in part, by enhanced mitochondrial function. Here, we used breast cell lines and metastatic breast cancer patient samples to begin to dissect the role of mitochondrial metabolism in conferring the CSC phenotype. More specifically, we employed fluorescent staining with MitoTracker (MT) to metabolically fractionate these cell lines into mito-high and mito-low sub-populations, by flow-cytometry. Interestingly, cells with high mitochondrial mass (mito-high) were specifically enriched in a number of known CSC markers, such as aldehyde dehydrogenase (ALDH) activity, and they were ESA+/CD24-/low and formed mammospheres with higher efficiency. Large cell size is another independent characteristic of the stem cell phenotype; here, we observed a >2-fold increase in mitochondrial mass in large cells (>12-μm), relative to the smaller cell population (4–8-μm). Moreover, the mito-high cell population showed a 2.4-fold enrichment in tumor-initiating cell activity, based on limiting dilution assays in murine xenografts. Importantly, primary human breast CSCs isolated from patients with metastatic breast cancer or a patient derived xenograft (PDX) also showed the co-enrichment of ALDH activity and mitochondrial mass. Most significantly, our investigations demonstrated that mito-high cells were resistant to paclitaxel, resulting in little or no DNA damage, as measured using the comet assay. In summary, increased mitochondrial mass in a sub-population of breast cancer cells confers a stem-like phenotype and chemo-resistance. As such, our current findings have important clinical implications for over-coming drug resistance, by therapeutically targeting the mito-high CSC population.
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Affiliation(s)
- Gillian Farnie
- Cancer Stem Cell Research, Institute of Cancer Sciences, University of Manchester, Manchester, UK
| | - Federica Sotgia
- The Breast Cancer Now Research Unit, Institute of Cancer Sciences, University of Manchester, Manchester, UK.,The Manchester Centre for Cellular Metabolism (MCCM), Institute of Cancer Sciences, University of Manchester, Manchester, UK
| | - Michael P Lisanti
- The Breast Cancer Now Research Unit, Institute of Cancer Sciences, University of Manchester, Manchester, UK.,The Manchester Centre for Cellular Metabolism (MCCM), Institute of Cancer Sciences, University of Manchester, Manchester, UK
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238
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Stewart DA, Winnike JH, McRitchie SL, Clark RF, Pathmasiri WW, Sumner SJ. Metabolomics Analysis of Hormone-Responsive and Triple-Negative Breast Cancer Cell Responses to Paclitaxel Identify Key Metabolic Differences. J Proteome Res 2016; 15:3225-40. [PMID: 27447733 DOI: 10.1021/acs.jproteome.6b00430] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
To date, no targeted therapies are available to treat triple negative breast cancer (TNBC), while other breast cancer subtypes are responsive to current therapeutic treatment. Metabolomics was conducted to reveal differences in two hormone receptor-negative TNBC cell lines and two hormone receptor-positive Luminal A cell lines. Studies were conducted in the presence and absence of paclitaxel (Taxol). TNBC cell lines had higher levels of amino acids, branched-chain amino acids, nucleotides, and nucleotide sugars and lower levels of proliferation-related metabolites like choline compared with Luminal A cell lines. In the presence of paclitaxel, each cell line showed unique metabolic responses, with some similarities by type. For example, in the Luminal A cell lines, levels of lactate and creatine decreased while certain choline metabolites and myo-inositol increased with paclitaxel. In the TNBC cell lines levels of glutamine, glutamate, and glutathione increased, whereas lysine, proline, and valine decreased in the presence of drug. Profiling secreted inflammatory cytokines in the conditioned media demonstrated a greater response to paclitaxel in the hormone-positive Luminal cells compared with a secretion profile that suggested greater drug resistance in the TNBC cells. The most significant differences distinguishing the cell types based on pathway enrichment analyses were related to amino acid, lipid and carbohydrate metabolism pathways, whereas several biological pathways were differentiated between the cell lines following treatment.
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Affiliation(s)
- Delisha A Stewart
- NIH Eastern Regional Comprehensive Metabolomics Resource Core, RTI International , Research Triangle Park, North Carolina 27709, United States
| | - Jason H Winnike
- David H. Murdock Research Institute , Kannapolis, North Carolina 28081, United States
| | - Susan L McRitchie
- NIH Eastern Regional Comprehensive Metabolomics Resource Core, RTI International , Research Triangle Park, North Carolina 27709, United States
| | - Robert F Clark
- NIH Eastern Regional Comprehensive Metabolomics Resource Core, RTI International , Research Triangle Park, North Carolina 27709, United States
| | - Wimal W Pathmasiri
- NIH Eastern Regional Comprehensive Metabolomics Resource Core, RTI International , Research Triangle Park, North Carolina 27709, United States
| | - Susan J Sumner
- NIH Eastern Regional Comprehensive Metabolomics Resource Core, RTI International , Research Triangle Park, North Carolina 27709, United States
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239
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Gertz M, Steegborn C. Using mitochondrial sirtuins as drug targets: disease implications and available compounds. Cell Mol Life Sci 2016; 73:2871-96. [PMID: 27007507 PMCID: PMC11108305 DOI: 10.1007/s00018-016-2180-7] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Revised: 02/15/2016] [Accepted: 03/11/2016] [Indexed: 02/06/2023]
Abstract
Sirtuins are an evolutionary conserved family of NAD(+)-dependent protein lysine deacylases. Mammals have seven Sirtuin isoforms, Sirt1-7. They contribute to regulation of metabolism, stress responses, and aging processes, and are considered therapeutic targets for metabolic and aging-related diseases. While initial studies were focused on Sirt1 and 2, recent progress on the mitochondrial Sirtuins Sirt3, 4, and 5 has stimulated research and drug development for these isoforms. Here we review the roles of Sirtuins in regulating mitochondrial functions, with a focus on the mitochondrially located isoforms, and on their contributions to disease pathologies. We further summarize the compounds available for modulating the activity of these Sirtuins, again with a focus on mitochondrial isoforms, and we describe recent results important for the further improvement of compounds. This overview illustrates the potential of mitochondrial Sirtuins as drug targets and summarizes the status, progress, and challenges in developing small molecule compounds modulating their activity.
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Affiliation(s)
- Melanie Gertz
- Department of Biochemistry, University of Bayreuth, Universitätsstr. 30, 95447, Bayreuth, Germany
- Bayer Pharma AG, Apratherweg 18a, 42096, Wuppertal, Germany
| | - Clemens Steegborn
- Department of Biochemistry, University of Bayreuth, Universitätsstr. 30, 95447, Bayreuth, Germany.
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240
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Jeong SM, Hwang S, Park K, Yang S, Seong RH. Enhanced mitochondrial glutamine anaplerosis suppresses pancreatic cancer growth through autophagy inhibition. Sci Rep 2016; 6:30767. [PMID: 27477484 PMCID: PMC4967856 DOI: 10.1038/srep30767] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Accepted: 07/07/2016] [Indexed: 12/12/2022] Open
Abstract
Cancer cells use precursors derived from tricarboxylic acid (TCA) cycle to support their unlimited growth. However, continuous export of TCA cycle intermediates results in the defect of mitochondrial integrity. Mitochondria glutamine metabolism plays an essential role for the maintenance of mitochondrial functions and its biosynthetic roles by refilling the mitochondrial carbon pool. Here we report that human pancreatic ductal adenocarcinoma (PDAC) cells have a distinct dependence on mitochondrial glutamine metabolism. Whereas glutamine flux into mitochondria contributes to proliferation of most cancer cells, enhanced glutamine anaplerosis results in a pronounced suppression of PDAC growth. A cell membrane permeable α-ketoglutarate analog or overexpression of glutamate dehydrogenase lead to decreased proliferation and increased apoptotic cell death in PDAC cells but not other cancer cells. We found that enhanced glutamine anaplerosis inhibits autophagy, required for tumorigenic growth of PDAC, by activating mammalian TORC1. Together, our results reveal that glutamine anaplerosis is a crucial regulator of growth and survival of PDAC cells, which may provide novel therapeutic approaches to treat these cancers.
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Affiliation(s)
- Seung Min Jeong
- Department of Biochemistry, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea.,Institute for Aging and Metabolic Diseases, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea
| | - Sunsook Hwang
- School of Biological Sciences and Institute of Molecular Biology and Genetics, Seoul National University, Seoul 151-742, Republic of Korea
| | - Kyungsoo Park
- School of Biological Sciences and Institute of Molecular Biology and Genetics, Seoul National University, Seoul 151-742, Republic of Korea
| | - Seungyeon Yang
- Department of Biochemistry, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea.,Institute for Aging and Metabolic Diseases, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea
| | - Rho Hyun Seong
- School of Biological Sciences and Institute of Molecular Biology and Genetics, Seoul National University, Seoul 151-742, Republic of Korea
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241
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Srivastava S. Emerging therapeutic roles for NAD(+) metabolism in mitochondrial and age-related disorders. Clin Transl Med 2016; 5:25. [PMID: 27465020 PMCID: PMC4963347 DOI: 10.1186/s40169-016-0104-7] [Citation(s) in RCA: 126] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Accepted: 06/26/2016] [Indexed: 12/12/2022] Open
Abstract
Nicotinamide adenine dinucleotide (NAD+) is a central metabolic cofactor in eukaryotic cells that plays a critical role in regulating cellular metabolism and energy homeostasis. NAD+ in its reduced form (i.e. NADH) serves as the primary electron donor in mitochondrial respiratory chain, which involves adenosine triphosphate production by oxidative phosphorylation. The NAD+/NADH ratio also regulates the activity of various metabolic pathway enzymes such as those involved in glycolysis, Kreb’s cycle, and fatty acid oxidation. Intracellular NAD+ is synthesized de novo from l-tryptophan, although its main source of synthesis is through salvage pathways from dietary niacin as precursors. NAD+ is utilized by various proteins including sirtuins, poly ADP-ribose polymerases (PARPs) and cyclic ADP-ribose synthases. The NAD+ pool is thus set by a critical balance between NAD+ biosynthetic and NAD+ consuming pathways. Raising cellular NAD+ content by inducing its biosynthesis or inhibiting the activity of PARP and cADP-ribose synthases via genetic or pharmacological means lead to sirtuins activation. Sirtuins modulate distinct metabolic, energetic and stress response pathways, and through their activation, NAD+ directly links the cellular redox state with signaling and transcriptional events. NAD+ levels decline with mitochondrial dysfunction and reduced NAD+/NADH ratio is implicated in mitochondrial disorders, various age-related pathologies as well as during aging. Here, I will provide an overview of the current knowledge on NAD+ metabolism including its biosynthesis, utilization, compartmentalization and role in the regulation of metabolic homoeostasis. I will further discuss how augmenting intracellular NAD+ content increases oxidative metabolism to prevent bioenergetic and functional decline in multiple models of mitochondrial diseases and age-related disorders, and how this knowledge could be translated to the clinic for human relevance.
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Affiliation(s)
- Sarika Srivastava
- Virginia Tech Carilion Research Institute, 2 Riverside Circle, Roanoke, VA, 24016, USA.
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242
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Wang RH, Zhao T, Cui K, Hu G, Chen Q, Chen W, Wang XW, Soto-Gutierrez A, Zhao K, Deng CX. Negative reciprocal regulation between Sirt1 and Per2 modulates the circadian clock and aging. Sci Rep 2016; 6:28633. [PMID: 27346580 PMCID: PMC4922021 DOI: 10.1038/srep28633] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 06/06/2016] [Indexed: 12/13/2022] Open
Abstract
Sirtuin 1 (SIRT1) is involved in both aging and circadian-clock regulation, yet the link between the two processes in relation to SIRT1 function is not clear. Using Sirt1-deficient mice, we found that Sirt1 and Period 2 (Per2) constitute a reciprocal negative regulation loop that plays important roles in modulating hepatic circadian rhythmicity and aging. Sirt1-deficient mice exhibited profound premature aging and enhanced acetylation of histone H4 on lysine16 (H4K16) in the promoter of Per2, the latter of which leads to its overexpression; in turn, Per2 suppresses Sirt1 transcription through binding to the Sirt1 promoter at the Clock/Bmal1 site. This negative reciprocal relationship between SIRT1 and PER2 was also observed in human hepatocytes. We further demonstrated that the absence of Sirt1 or the ectopic overexpression of Per2 in the liver resulted in a dysregulated pace of the circadian rhythm. The similar circadian rhythm was also observed in aged wild type mice. The interplay between Sirt1 and Per2 modulates aging gene expression and circadian-clock maintenance.
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Affiliation(s)
- Rui-Hong Wang
- Faculty of Health Sciences, University of Macau, Macau SAR, China.,Genetics of Development and Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Tingrui Zhao
- Genetics of Development and Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Kairong Cui
- Systems Biology Center, National Heart, Lung, and Blood Institute, Bethesda, MD 20892, USA
| | - Gangqing Hu
- Systems Biology Center, National Heart, Lung, and Blood Institute, Bethesda, MD 20892, USA
| | - Qiang Chen
- Faculty of Health Sciences, University of Macau, Macau SAR, China
| | - Weiping Chen
- Genomic Core Laboratory, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, MD 20892, USA
| | - Xin-Wei Wang
- Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | | | - Keji Zhao
- Systems Biology Center, National Heart, Lung, and Blood Institute, Bethesda, MD 20892, USA
| | - Chu-Xia Deng
- Faculty of Health Sciences, University of Macau, Macau SAR, China.,Genetics of Development and Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
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243
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Fang EF, Scheibye-Knudsen M, Chua KF, Mattson MP, Croteau DL, Bohr VA. Nuclear DNA damage signalling to mitochondria in ageing. Nat Rev Mol Cell Biol 2016; 17:308-21. [PMID: 26956196 PMCID: PMC5161407 DOI: 10.1038/nrm.2016.14] [Citation(s) in RCA: 256] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Mitochondrial dysfunction is a hallmark of ageing, and mitochondrial maintenance may lead to increased healthspan. Emerging evidence suggests a crucial role for signalling from the nucleus to mitochondria (NM signalling) in regulating mitochondrial function and ageing. An important initiator of NM signalling is nuclear DNA damage, which accumulates with age and may contribute to the development of age-associated diseases. DNA damage-dependent NM signalling constitutes a network that includes nuclear sirtuins and controls genomic stability and mitochondrial integrity. Pharmacological modulation of NM signalling is a promising novel approach for the prevention and treatment of age-associated diseases.
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Affiliation(s)
- Evandro Fei Fang
- Laboratory of Molecular Gerontology, National Institute on Aging, National Institutes of Health, Baltimore, Maryland 21224, USA
| | - Morten Scheibye-Knudsen
- Laboratory of Molecular Gerontology, National Institute on Aging, National Institutes of Health, Baltimore, Maryland 21224, USA
| | - Katrin F Chua
- Department of Medicine, Division of Endocrinology, Gerontology, and Metabolism, School of Medicine, Stanford University, Stanford, California 94305, USA
- Geriatric Research, Education, and Clinical Center, VA Palo Alto Health Care System, Palo Alto, California 94304, USA
| | - Mark P Mattson
- Laboratory of Neurosciences, National Institute on Aging, National Institutes of Health, Baltimore, Maryland 21224, USA
- Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA
| | - Deborah L Croteau
- Laboratory of Molecular Gerontology, National Institute on Aging, National Institutes of Health, Baltimore, Maryland 21224, USA
| | - Vilhelm A Bohr
- Laboratory of Molecular Gerontology, National Institute on Aging, National Institutes of Health, Baltimore, Maryland 21224, USA
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244
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George J, Ahmad N. Mitochondrial Sirtuins in Cancer: Emerging Roles and Therapeutic Potential. Cancer Res 2016; 76:2500-6. [PMID: 27197261 DOI: 10.1158/0008-5472.can-15-2733] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 02/17/2016] [Indexed: 01/22/2023]
Abstract
The past few decades have witnessed a furious attention of scientific community toward identifying novel molecular factors and targets that could be exploited for drug development for cancer management. One such factor is the sirtuin (SIRT) family of nicotinamide adenine dinucleotide (NAD(+))-dependent deacetylases. The role of SIRTs in cancer is extremely complex, with dichotomous functions depending on cell contexts. Mammalian SIRTs (SIRT1-7) differ in their cellular localization and biologic functions. Among these, SIRT -3, -4, and -5 are located in the mitochondria and are being carefully investigated. These mitochondrial SIRTs (mtSIRT) regulate multiple cellular and physiologic processes, including cell cycle, gene expression, cell viability, stress response, metabolism, and energy homeostasis. Recent research suggests that mtSIRTs influence tumors by regulating the metabolic state of the cell. Although the research on the role of mtSIRTs in cancer is still in its infancy, studies have suggested tumor suppressor as well as tumor promoter roles for them. This review is focused on discussing up-to-date information about the roles and functional relevance of mtSIRTs (SIRT -3, -4, -5) in cancers. We have also provided a critical discussion and our perspective on their dual roles, as tumor promoter versus tumor suppressor, in cancer. Cancer Res; 76(9); 2500-6. ©2016 AACR.
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Affiliation(s)
- Jasmine George
- Department of Dermatology, University of Wisconsin, Madison, Wisconsin
| | - Nihal Ahmad
- Department of Dermatology, University of Wisconsin, Madison, Wisconsin. William S. Middleton VA Medical Center, Madison, Wisconsin.
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245
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Igci M, Kalender ME, Borazan E, Bozgeyik I, Bayraktar R, Bozgeyik E, Camci C, Arslan A. High-throughput screening of Sirtuin family of genes in breast cancer. Gene 2016; 586:123-8. [PMID: 27080717 DOI: 10.1016/j.gene.2016.04.023] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Revised: 03/23/2016] [Accepted: 04/07/2016] [Indexed: 12/13/2022]
Abstract
Mammalian Sirtuins have been shown to perform distinct cellular functions and deregulated expression of these genes was reported to be involved in the development of various malignancies including breast cancer. An increasing number of evidence indicates that Sirtuins have both tumor promoter and tumor suppressor functions. However, the roles of Sirtuins have not been well-reported in breast cancer. In the present study, quantitative expression levels of Sirtuins (SIRT1-7) in breast cancer patients and breast cancer cell lines (MCF-7 and SKBR3) and control cell line (CRL-4010) were assessed by using a high-throughput real-time PCR method. As a result, Sirtuins were found to be differentially expressed in breast cancer tissues and cancer cell lines. Particularly, expressions of SIRT1 and SIRT4 were found to be significantly down-regulated in breast cancer tissues and SKBR3 breast cancer cells. In contrast, SIRT2, SIRT3, and SIRT5 genes were shown to be up-regulated in our study. Although SIRT6 and SIRT7 were also up-regulated in breast cancer tissues, these expression changes were statistically insignificant. Additionally, SIRT2, SIRT3, SIRT5, SIRT6 and SIRT7 were found to be differentially expressed in breast cancer cell lines. Yet, these changes were not well-correlated with tissue expression levels. In conclusion, Sirtuin family of genes shows differential expressions in breast cancer tissues and cells and SIRT1 and SIRT4 seem to play key tumor suppressor roles in breast cancer development. Herein, we report expression levels of Sirtuin family of genes in both breast cancer tissues and cancer cell lines simultaneously.
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Affiliation(s)
- Mehri Igci
- Gaziantep University, Faculty of Medicine, Department of Medical Biology, Gaziantep, Turkey.
| | - Mehmet Emin Kalender
- Gaziantep University, Faculty of Medicine, Department of Oncology, Gaziantep, Turkey
| | - Ersin Borazan
- Gaziantep University, Faculty of Medicine, Department of General Surgery, Gaziantep, Turkey
| | - Ibrahim Bozgeyik
- Adiyaman University, Faculty of Medicine, Department of Medical Biology, Adiyaman, Turkey
| | - Recep Bayraktar
- Gaziantep University, Faculty of Medicine, Department of Medical Biology, Gaziantep, Turkey
| | - Esra Bozgeyik
- Gaziantep University, Faculty of Medicine, Department of Medical Biology, Gaziantep, Turkey
| | - Celaletdin Camci
- Gaziantep University, Faculty of Medicine, Department of Oncology, Gaziantep, Turkey
| | - Ahmet Arslan
- Gaziantep University, Faculty of Medicine, Department of Medical Biology, Gaziantep, Turkey
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246
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Abstract
The nutrient demands of cancer cannot be met by normal cell metabolism. Cancer cells undergo dramatic alteration of metabolic pathways in a process called reprogramming, characterized by increased nutrient uptake and re-purposing of these fuels for biosynthetic, bioenergetic or signaling pathways. Partitioning carbon sources toward growth and away from ATP production necessitates other means of generating energy for biosynthetic reactions. Additionally, cancer cell adaptations frequently lead to increased production of reactive oxygen species and lactic acid, which can be beneficial to cancer growth but also are potentially toxic and must be appropriately cleared. Sirtuins are a family of deacylases and ADP-ribosyltransferases with clear links to regulation of cancer metabolism. Through their unique ability to integrate cellular stress and nutrient status with coordination of metabolic outputs, sirtuins are well poised to play pivotal roles in tumor progression and survival. Here, we review the multi-faceted duties of sirtuins in tackling the metabolic hurdles in cancer. We focus on both beneficial and adverse effects of sirtuins in the regulation of energetic, biosynthetic and toxicity barriers faced by cancer cells.
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Affiliation(s)
- Natalie J German
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA.
| | - Marcia C Haigis
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA.
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247
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Bedalov A, Chowdhury S, Simon JA. Biology, Chemistry, and Pharmacology of Sirtuins. Methods Enzymol 2016; 574:183-211. [PMID: 27423863 DOI: 10.1016/bs.mie.2016.03.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Sirtuins are a family of protein deacylases related by amino acid sequence and cellular function to the yeast Saccharomyces cerevisiae protein Sir2 (Silent Information Regulator-2), the first of this class of enzymes to be identified and studied in detail. Based on its initially discovered activity, Sir2 was classified as a histone deacetylase that removes acetyl groups from histones H3 and H4. The acetylation/deacetylation of these particular substrates leads to changes in transcriptional silencing at specific loci in the yeast genome, hence its name. Sirtuins, however, have been shown to regulate a wide variety of cellular processes beyond transcriptional repression in varied subcellular compartments and in different cell types. Mechanistically distinct from Zn(2+)-dependent deacylases, sirtuins use nicotinamide adenine dinucleotide as a cofactor in the removal of acetyl and other acyl groups linking metabolic status and posttranslational modification. Sirtuins' unique position has made them attractive targets for small-molecule drug development. In this chapter, we describe the biological roles, therapeutic areas in which sirtuins may play a role and development of small-molecule inhibitors of sirtuins employing phenotypic screening technologies ranging from assays in yeast, as well as biochemical screens to yield lead drug development candidates targeting a broad spectrum of human diseases.
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Affiliation(s)
- A Bedalov
- Fred Hutchinson Cancer Research Center, Seattle, WA, United States
| | - S Chowdhury
- Fred Hutchinson Cancer Research Center, Seattle, WA, United States
| | - J A Simon
- Fred Hutchinson Cancer Research Center, Seattle, WA, United States.
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248
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Meng P, Wei J, Wang J, Liang J, Zhi Y, Geng Y. The involvement of sirtuins during optic nerve injury of rats. Neuroreport 2016; 27:361-5. [PMID: 26885868 DOI: 10.1097/wnr.0000000000000550] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Sirtuins, comprised of seven members, protect cells from injury, possibly through different roles. In this study, we used two young rat optic nerve injury models to analyze the changes in Sirts 1-7 at different time points to better understand the role of sirtuins during optic nerve injury. Twelve-week-old adult male F344 rats (total n=42) were divided randomly into two groups. One group was subjected to optic nerve cut (ON-cut) and the other group was subjected to a peripheral nerve-optic nerve graft (PN-ON graft) on the left eye. At 1 and 3 days and 1, 2, and 4 weeks, rats were euthanized and retinas of both eyes were removed. Total RNA was extracted and first-strand cDNA was synthesized. Sirts 1-7 and housekeeping β-actin quantitative real-time PCR were performed. The quantitative real-time PCR profile showed that sirtuin mRNAs in both groups increased following optic nerve injury with and without peripheral nerve grafting. Sirt1 mRNA increased rapidly, reaching its peak at 3 days after surgery. Sirts 2-7 showed an increasing trend and remained high through 4 weeks after surgery. Sirts 4 and 6 were the only Sirts that increased in number in the PN-graft group at 4 weeks after surgery, where neuronal survival should be higher. Our data indicate that Sirt1 and Sirts 2-7 may play different or complementary roles in optic nerve injury and that Sirts 4 and 6 may play a greater role than the remaining Sirts in axon regeneration.
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Affiliation(s)
- Pei Meng
- aDepartment of Pathology and Provincial Key Laboratory of Infectious Diseases and Immunopathology, Collaborative and Creative Center, Shantou University Medical College bJoint Shantou International Eye Center, Shantou University and The Chinese University of Hong Kong, Shantou, Guangdong, China cDepartment of Genetics, University Medical Center Groningen, Groningen, The Netherlands
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249
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HUANG GUOYU, CHENG JUN, YU FUDONG, LIU XISHENG, YUAN CHENWEI, LIU CHENCHEN, CHEN XIAOLEI, PENG ZHIHAI. Clinical and therapeutic significance of sirtuin-4 expression in colorectal cancer. Oncol Rep 2016; 35:2801-10. [DOI: 10.3892/or.2016.4685] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Accepted: 01/15/2016] [Indexed: 11/05/2022] Open
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250
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Cea M, Cagnetta A, Adamia S, Acharya C, Tai YT, Fulciniti M, Ohguchi H, Munshi A, Acharya P, Bhasin MK, Zhong L, Carrasco R, Monacelli F, Ballestrero A, Richardson P, Gobbi M, Lemoli RM, Munshi N, Hideshima T, Nencioni A, Chauhan D, Anderson KC. Evidence for a role of the histone deacetylase SIRT6 in DNA damage response of multiple myeloma cells. Blood 2016; 127:1138-50. [PMID: 26675349 PMCID: PMC4778164 DOI: 10.1182/blood-2015-06-649970] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Accepted: 12/02/2015] [Indexed: 12/18/2022] Open
Abstract
Multiple myeloma (MM) is characterized by a highly unstable genome, with aneuploidy observed in nearly all patients. The mechanism causing this karyotypic instability is largely unknown, but recent observations have correlated these abnormalities with dysfunctional DNA damage response. Here, we show that the NAD(+)-dependent deacetylase SIRT6 is highly expressed in MM cells, as an adaptive response to genomic stability, and that high SIRT6 levels are associated with adverse prognosis. Mechanistically, SIRT6 interacts with the transcription factor ELK1 and with the ERK signaling-related gene. By binding to their promoters and deacetylating H3K9 at these sites, SIRT6 downregulates the expression of mitogen-activated protein kinase (MAPK) pathway genes, MAPK signaling, and proliferation. In addition, inactivation of ERK2/p90RSK signaling triggered by high SIRT6 levels increases DNA repair via Chk1 and confers resistance to DNA damage. Using genetic and biochemical studies in vitro and in human MM xenograft models, we show that SIRT6 depletion both enhances proliferation and confers sensitization to DNA-damaging agents. Our findings therefore provide insights into the functional interplay between SIRT6 and DNA repair mechanisms, with implications for both tumorigenesis and the treatment of MM.
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Affiliation(s)
- Michele Cea
- LeBow Institute for Myeloma Therapeutics and Jerome Lipper Center for Multiple Myeloma Research, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA; Clinic of Hematology, Department of Internal Medicine, University of Genoa, Istituto di Ricovero e Cura a Carattere Scientifico Scientifico Azienda Ospedaliera Universitaria San Martino-Istituto Scientifico Tumori, Genoa, Italy
| | - Antonia Cagnetta
- LeBow Institute for Myeloma Therapeutics and Jerome Lipper Center for Multiple Myeloma Research, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA; Clinic of Hematology, Department of Internal Medicine, University of Genoa, Istituto di Ricovero e Cura a Carattere Scientifico Scientifico Azienda Ospedaliera Universitaria San Martino-Istituto Scientifico Tumori, Genoa, Italy
| | - Sophia Adamia
- LeBow Institute for Myeloma Therapeutics and Jerome Lipper Center for Multiple Myeloma Research, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA
| | - Chirag Acharya
- LeBow Institute for Myeloma Therapeutics and Jerome Lipper Center for Multiple Myeloma Research, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA
| | - Yu-Tzu Tai
- LeBow Institute for Myeloma Therapeutics and Jerome Lipper Center for Multiple Myeloma Research, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA
| | - Mariateresa Fulciniti
- LeBow Institute for Myeloma Therapeutics and Jerome Lipper Center for Multiple Myeloma Research, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA
| | - Hiroto Ohguchi
- LeBow Institute for Myeloma Therapeutics and Jerome Lipper Center for Multiple Myeloma Research, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA
| | - Aditya Munshi
- LeBow Institute for Myeloma Therapeutics and Jerome Lipper Center for Multiple Myeloma Research, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA
| | - Prakrati Acharya
- LeBow Institute for Myeloma Therapeutics and Jerome Lipper Center for Multiple Myeloma Research, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA
| | - Manoj K Bhasin
- Beth Israel Deaconess Medical Center Genomics, Proteomics, Bioinformatics and Systems Biology Center, Beth Israel Deaconess Medical Center, Boston, MA; and
| | - Lei Zhong
- The Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA
| | - Ruben Carrasco
- LeBow Institute for Myeloma Therapeutics and Jerome Lipper Center for Multiple Myeloma Research, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA
| | - Fiammetta Monacelli
- Clinic of Hematology, Department of Internal Medicine, University of Genoa, Istituto di Ricovero e Cura a Carattere Scientifico Scientifico Azienda Ospedaliera Universitaria San Martino-Istituto Scientifico Tumori, Genoa, Italy
| | - Alberto Ballestrero
- Clinic of Hematology, Department of Internal Medicine, University of Genoa, Istituto di Ricovero e Cura a Carattere Scientifico Scientifico Azienda Ospedaliera Universitaria San Martino-Istituto Scientifico Tumori, Genoa, Italy
| | - Paul Richardson
- LeBow Institute for Myeloma Therapeutics and Jerome Lipper Center for Multiple Myeloma Research, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA
| | - Marco Gobbi
- Clinic of Hematology, Department of Internal Medicine, University of Genoa, Istituto di Ricovero e Cura a Carattere Scientifico Scientifico Azienda Ospedaliera Universitaria San Martino-Istituto Scientifico Tumori, Genoa, Italy
| | - Roberto M Lemoli
- Clinic of Hematology, Department of Internal Medicine, University of Genoa, Istituto di Ricovero e Cura a Carattere Scientifico Scientifico Azienda Ospedaliera Universitaria San Martino-Istituto Scientifico Tumori, Genoa, Italy
| | - Nikhil Munshi
- LeBow Institute for Myeloma Therapeutics and Jerome Lipper Center for Multiple Myeloma Research, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA
| | - Teru Hideshima
- LeBow Institute for Myeloma Therapeutics and Jerome Lipper Center for Multiple Myeloma Research, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA
| | - Alessio Nencioni
- Clinic of Hematology, Department of Internal Medicine, University of Genoa, Istituto di Ricovero e Cura a Carattere Scientifico Scientifico Azienda Ospedaliera Universitaria San Martino-Istituto Scientifico Tumori, Genoa, Italy
| | - Dharminder Chauhan
- LeBow Institute for Myeloma Therapeutics and Jerome Lipper Center for Multiple Myeloma Research, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA
| | - Kenneth C Anderson
- LeBow Institute for Myeloma Therapeutics and Jerome Lipper Center for Multiple Myeloma Research, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA
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