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Kwon SY, Park YJ. Function of NAD metabolism in white adipose tissue: lessons from mouse models. Adipocyte 2024; 13:2313297. [PMID: 38316756 PMCID: PMC10877972 DOI: 10.1080/21623945.2024.2313297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 01/22/2024] [Indexed: 02/07/2024] Open
Abstract
Nicotinamide Adenine Dinucleotide (NAD) is an endogenous substance in redox reactions and regulates various functions in metabolism. NAD and its precursors are known for their anti-ageing and anti-obesity properties and are mainly active in the liver and muscle. Boosting NAD+ through supplementation with the precursors, such as nicotinamide mononucleotide (NMN) or nicotinamide riboside (NR), enhances insulin sensitivity and circadian rhythm in the liver, and improves mitochondrial function in the muscle. Recent evidence has revealed that the adipose tissue could be another direct target of NAD supplementation by attenuating inflammation and fat accumulation. Moreover, murine studies with genetically modified models demonstrated that nicotinamide phosphoribosyltransferase (NAMPT), a NAD regulatory enzyme that synthesizes NMN, played a critical role in lipogenesis and lipolysis in an adipocyte-specific manner. The tissue-specific effects of NAD+ metabolic pathways indicate a potential of the NAD precursors to control metabolic stress particularly via focusing on adipose tissue. Therefore, this narrative review raises an importance of NAD metabolism in white adipose tissue (WAT) through a variety of studies using different mouse models.
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Affiliation(s)
- So Young Kwon
- Graduate Program in System Health and Engineering, Ewha Womans University, Seoul, Republic of Korea
- Department of Nutritional Science and Food Management, Ewha Womans University, Seoul, Republic of Korea
| | - Yoon Jung Park
- Graduate Program in System Health and Engineering, Ewha Womans University, Seoul, Republic of Korea
- Department of Nutritional Science and Food Management, Ewha Womans University, Seoul, Republic of Korea
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2
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Li F, Wu C, Wang G. Targeting NAD Metabolism for the Therapy of Age-Related Neurodegenerative Diseases. Neurosci Bull 2024; 40:218-240. [PMID: 37253984 PMCID: PMC10838897 DOI: 10.1007/s12264-023-01072-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 04/10/2023] [Indexed: 06/01/2023] Open
Abstract
As the aging population continues to grow rapidly, age-related diseases are becoming an increasing burden on the healthcare system and a major concern for the well-being of elderly individuals. While aging is an inevitable process for all humans, it can be slowed down and age-related diseases can be treated or alleviated. Nicotinamide adenine dinucleotide (NAD) is a critical coenzyme or cofactor that plays a central role in metabolism and is involved in various cellular processes including the maintenance of metabolic homeostasis, post-translational protein modifications, DNA repair, and immune responses. As individuals age, their NAD levels decline, and this decrease has been suggested to be a contributing factor to the development of numerous age-related diseases, such as cancer, diabetes, cardiovascular diseases, and neurodegenerative diseases. In pursuit of healthy aging, researchers have investigated approaches to boost or maintain NAD levels. Here, we provide an overview of NAD metabolism and the role of NAD in age-related diseases and summarize recent progress in the development of strategies that target NAD metabolism for the treatment of age-related diseases, particularly neurodegenerative diseases.
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Affiliation(s)
- Feifei Li
- School of Pharmaceutical Sciences, Ministry of Education Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Tsinghua University, Beijing, 100084, China
| | - Chou Wu
- School of Pharmaceutical Sciences, Ministry of Education Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Tsinghua University, Beijing, 100084, China
- Tsinghua-Peking Joint Center for Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Gelin Wang
- School of Pharmaceutical Sciences, Ministry of Education Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Tsinghua University, Beijing, 100084, China.
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3
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Camacho-Pereira J, Lai de Souza LO, Chichierchio MS, Rodrigues-Chaves C, Lomba LDS, Fonseca-Oliveira M, Carvalho-Mendonça D, Silva-Rodrigues T, Galina A. The NADase CD38 may not dictate NAD levels in brain mitochondria of aged mice but regulates hydrogen peroxide generation. Free Radic Biol Med 2023; 209:29-39. [PMID: 37774804 DOI: 10.1016/j.freeradbiomed.2023.09.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/26/2023] [Accepted: 09/27/2023] [Indexed: 10/01/2023]
Abstract
Aging is a time-related functional decline that affects many species. One of the hallmarks of aging is mitochondrial dysfunction, which leads to metabolic decline. The NAD decline during aging, in several tissues, correlates with increase in NADase activity of CD38. Knock out or pharmacological inhibition of CD38 activity can rescue mitochondrial function in several tissues, however, the role of CD38 in controlling NAD levels and metabolic function in the aging brain is unknown. In this work, we investigated CD38 NADase activity controlling NAD levels and mitochondrial function in mice brain with aging. We demonstrate that NADase activity of CD38 does not dictate NAD total levels in brain of aging mice and does not control mitochondrial oxygen consumption nor other oxygen parameters markers of mitochondrial dysfunction. However, for the first time we show that CD38 regulates hydrogen peroxide (H2O2) generation, one of the reactive oxygen species (ROS) in aging brain, through regulation of pyruvate dehydrogenase and alfa-ketoglutarate dehydrogenase, as mitochondria H2O2 leakage sites. The effect may be related to mitochondrial calcium handling differences in CD38 absence. Our study highlights a novel role of CD38 in brain energy metabolism and aging.
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Affiliation(s)
- Juliana Camacho-Pereira
- Laboratório de Biologia Molecular de Leveduras, Instituto de Bioquímica Médica Leopoldo de Meis, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Cidade Universitária, Av. Carlos Chagas Filho 373, Ilha do Fundão, Rio de Janeiro, 21941-590, Brazil.
| | - Leonardo Osbourne Lai de Souza
- Laboratório de Biologia Molecular de Leveduras, Instituto de Bioquímica Médica Leopoldo de Meis, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Cidade Universitária, Av. Carlos Chagas Filho 373, Ilha do Fundão, Rio de Janeiro, 21941-590, Brazil.
| | - Marina Santos Chichierchio
- Laboratório de Biologia Molecular de Leveduras, Instituto de Bioquímica Médica Leopoldo de Meis, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Cidade Universitária, Av. Carlos Chagas Filho 373, Ilha do Fundão, Rio de Janeiro, 21941-590, Brazil.
| | - Camila Rodrigues-Chaves
- Laboratório de Bioenergética e Fisiologia Mitocondrial, Instituto de Bioquímica Médica Leopoldo de Meis, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Cidade Universitária, Av. Carlos Chagas Filho 373, Ilha do Fundão, Rio de Janeiro, 21941-590, Brazil.
| | - Luiza de Sousa Lomba
- Laboratório de Bioenergética e Fisiologia Mitocondrial, Instituto de Bioquímica Médica Leopoldo de Meis, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Cidade Universitária, Av. Carlos Chagas Filho 373, Ilha do Fundão, Rio de Janeiro, 21941-590, Brazil.
| | - Manoel Fonseca-Oliveira
- Laboratório de Bioenergética e Fisiologia Mitocondrial, Instituto de Bioquímica Médica Leopoldo de Meis, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Cidade Universitária, Av. Carlos Chagas Filho 373, Ilha do Fundão, Rio de Janeiro, 21941-590, Brazil.
| | - Daniel Carvalho-Mendonça
- Laboratório de Biologia Molecular de Leveduras, Instituto de Bioquímica Médica Leopoldo de Meis, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Cidade Universitária, Av. Carlos Chagas Filho 373, Ilha do Fundão, Rio de Janeiro, 21941-590, Brazil.
| | - Thaia Silva-Rodrigues
- Laboratório de Bioenergética e Fisiologia Mitocondrial, Instituto de Bioquímica Médica Leopoldo de Meis, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Cidade Universitária, Av. Carlos Chagas Filho 373, Ilha do Fundão, Rio de Janeiro, 21941-590, Brazil.
| | - Antonio Galina
- Laboratório de Bioenergética e Fisiologia Mitocondrial, Instituto de Bioquímica Médica Leopoldo de Meis, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Cidade Universitária, Av. Carlos Chagas Filho 373, Ilha do Fundão, Rio de Janeiro, 21941-590, Brazil.
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4
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Bhasin S, Seals D, Migaud M, Musi N, Baur JA. Nicotinamide Adenine Dinucleotide in Aging Biology: Potential Applications and Many Unknowns. Endocr Rev 2023; 44:1047-1073. [PMID: 37364580 DOI: 10.1210/endrev/bnad019] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 05/28/2023] [Accepted: 06/22/2023] [Indexed: 06/28/2023]
Abstract
Recent research has unveiled an expansive role of NAD+ in cellular energy generation, redox reactions, and as a substrate or cosubstrate in signaling pathways that regulate health span and aging. This review provides a critical appraisal of the clinical pharmacology and the preclinical and clinical evidence for therapeutic effects of NAD+ precursors for age-related conditions, with a particular focus on cardiometabolic disorders, and discusses gaps in current knowledge. NAD+ levels decrease throughout life; age-related decline in NAD+ bioavailability has been postulated to be a contributor to many age-related diseases. Raising NAD+ levels in model organisms by administration of NAD+ precursors improves glucose and lipid metabolism; attenuates diet-induced weight gain, diabetes, diabetic kidney disease, and hepatic steatosis; reduces endothelial dysfunction; protects heart from ischemic injury; improves left ventricular function in models of heart failure; attenuates cerebrovascular and neurodegenerative disorders; and increases health span. Early human studies show that NAD+ levels can be raised safely in blood and some tissues by oral NAD+ precursors and suggest benefit in preventing nonmelanotic skin cancer, modestly reducing blood pressure and improving lipid profile in older adults with obesity or overweight; preventing kidney injury in at-risk patients; and suppressing inflammation in Parkinson disease and SARS-CoV-2 infection. Clinical pharmacology, metabolism, and therapeutic mechanisms of NAD+ precursors remain incompletely understood. We suggest that these early findings provide the rationale for adequately powered randomized trials to evaluate the efficacy of NAD+ augmentation as a therapeutic strategy to prevent and treat metabolic disorders and age-related conditions.
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Affiliation(s)
- Shalender Bhasin
- Department of Medicine, Harvard Medical School, Research Program in Men's Health: Aging and Metabolism, Boston Claude D. Pepper Older Americans Independence Center, Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Douglas Seals
- Department of Integrative Physiology and Medicine, University of Colorado Boulder, Boulder, CO 80309, USA
| | - Marie Migaud
- Department of Pharmacology, Mitchell Cancer Institute, College of Medicine, University of Southern Alabama, Mobile, AL 36688, USA
| | - Nicolas Musi
- Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Joseph A Baur
- Department of Physiology, Institute for Diabetes, Obesity & Metabolism, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
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5
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Stock AJ, Ayyar S, Kashyap A, Wang Y, Yanai H, Starost MF, Tanaka-Yano M, Bodogai M, Sun C, Wang Y, Gong Y, Puligilla C, Fang EF, Bohr VA, Liu Y, Beerman I. Boosting NAD ameliorates hematopoietic impairment linked to short telomeres in vivo. GeroScience 2023; 45:2213-2228. [PMID: 36826621 PMCID: PMC10651621 DOI: 10.1007/s11357-023-00752-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 02/03/2023] [Indexed: 02/25/2023] Open
Abstract
Short telomeres are a defining feature of telomere biology disorders (TBDs), including dyskeratosis congenita (DC), for which there is no effective general cure. Patients with TBDs often experience bone marrow failure. NAD, an essential metabolic coenzyme, is decreased in models of DC. Herein, using telomerase reverse transcriptase null (Tert-/-) mice with critically short telomeres, we investigated the effect of NAD supplementation with the NAD precursor, nicotinamide riboside (NR), on features of health span disrupted by telomere impairment. Our results revealed that NR ameliorated body weight loss in Tert-/- mice and improved telomere integrity and telomere dysfunction-induced systemic inflammation. NR supplementation also mitigated myeloid skewing of Tert-/- hematopoietic stem cells. Furthermore, NR alleviated villous atrophy and inflammation in the small intestine of Tert-/- transplant recipient mice. Altogether, our findings support NAD intervention as a potential therapeutic strategy to enhance aspects of health span compromised by telomere attrition.
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Affiliation(s)
- Amanda J Stock
- Laboratory of Genetics and Genomics, Biomedical Research Center, National Institute On Aging/National Institutes of Health, 251 Bayview Blvd., Baltimore, MD, USA
| | - Saipriya Ayyar
- Translational Gerontology Branch, Biomedical Research Center, National Institute On Aging/National Institutes of Health, 251 Bayview Blvd., Baltimore, MD, USA
| | - Amogh Kashyap
- Translational Gerontology Branch, Biomedical Research Center, National Institute On Aging/National Institutes of Health, 251 Bayview Blvd., Baltimore, MD, USA
| | - Yunong Wang
- Laboratory of Genetics and Genomics, Biomedical Research Center, National Institute On Aging/National Institutes of Health, 251 Bayview Blvd., Baltimore, MD, USA
| | - Hagai Yanai
- Translational Gerontology Branch, Biomedical Research Center, National Institute On Aging/National Institutes of Health, 251 Bayview Blvd., Baltimore, MD, USA
| | - Matthew F Starost
- Division of Veterinary Resources, Building 14E, National Institutes of Health, 9000 Rockville Pike, Bethesda, MD, USA
| | - Mayuri Tanaka-Yano
- Translational Gerontology Branch, Biomedical Research Center, National Institute On Aging/National Institutes of Health, 251 Bayview Blvd., Baltimore, MD, USA
| | - Monica Bodogai
- Laboratory of Molecular Biology and Immunology, Biomedical Research Center, National Institute On Aging/National Institutes of Health, 251 Bayview Blvd., Baltimore, MD, USA
| | - Chongkui Sun
- Laboratory of Genetics and Genomics, Biomedical Research Center, National Institute On Aging/National Institutes of Health, 251 Bayview Blvd., Baltimore, MD, USA
| | - Yajun Wang
- Laboratory of Genetics and Genomics, Biomedical Research Center, National Institute On Aging/National Institutes of Health, 251 Bayview Blvd., Baltimore, MD, USA
| | - Yi Gong
- Laboratory of Genetics and Genomics, Biomedical Research Center, National Institute On Aging/National Institutes of Health, 251 Bayview Blvd., Baltimore, MD, USA
| | - Chandrakala Puligilla
- Laboratory of Genetics and Genomics, Biomedical Research Center, National Institute On Aging/National Institutes of Health, 251 Bayview Blvd., Baltimore, MD, USA
| | - Evandro F Fang
- DNA Repair Section, Biomedical Research Center, National Institute On Aging/National Institutes of Health, 251 Bayview Blvd., Baltimore, MD, USA
- Department of Clinical Molecular Biology, University of Oslo and Akershus University Hospital, 1478, Lørenskog, Norway
| | - Vilhelm A Bohr
- DNA Repair Section, Biomedical Research Center, National Institute On Aging/National Institutes of Health, 251 Bayview Blvd., Baltimore, MD, USA
| | - Yie Liu
- Laboratory of Genetics and Genomics, Biomedical Research Center, National Institute On Aging/National Institutes of Health, 251 Bayview Blvd., Baltimore, MD, USA.
| | - Isabel Beerman
- Translational Gerontology Branch, Biomedical Research Center, National Institute On Aging/National Institutes of Health, 251 Bayview Blvd., Baltimore, MD, USA.
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6
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Verma AK, Dubey S, Srivastava SK. "Identification of alkaloid compounds as potent inhibitors of Mycobacterium tuberculosis NadD using computational strategies". Comput Biol Med 2023; 158:106863. [PMID: 37030267 DOI: 10.1016/j.compbiomed.2023.106863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 02/09/2023] [Accepted: 03/30/2023] [Indexed: 04/10/2023]
Abstract
Mycobacterium tuberculosis is leading cause of death worldwide. NAD participates in a host of redox reactions in energy landscape of organisms. Several studies implicate surrogate energy pathways involving NAD pools as important in survival of active as well as dormant mycobacteria. One of the NAD metabolic pathway enzyme, nicotinate mononucleotide adenylyltransferase (NadD) is indispensable in mycobacterial NAD metabolism and is perceived as an attractive drug target in pathogen. In this study, we have employed in silico screening, simulation and MM-PBSA strategies to identify potentially important alkaloid compounds against mycobacterial NadD for structure-based inhibitor development. We have performed an exhaustive structure-based virtual screening of an alkaloid library, ADMET, DFT profiling followed by Molecular Dynamics (MD) simulation, and Molecular Mechanics-Poisson Boltzmann Surface Area (MM-PBSA) calculation to identify 10 compounds which exhibit favourable drug like properties and interactions. Interaction energies of these 10 alkaloid molecules range between -190 kJ/mol and -250 kJ/mol. These compounds could be promising starting point in the development of selective inhibitors against Mycobacterium tuberculosis.
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Affiliation(s)
- Abhishek Kumar Verma
- Structural Biology & Bioinformatics Laboratory, Department of Biosciences, Manipal University Jaipur, Dehmi Kalan, Off Jaipur-Ajmer Expressway, Jaipur, Rajasthan, 303007, India
| | - Saumya Dubey
- Structural Biology & Bioinformatics Laboratory, Department of Biosciences, Manipal University Jaipur, Dehmi Kalan, Off Jaipur-Ajmer Expressway, Jaipur, Rajasthan, 303007, India
| | - Sandeep Kumar Srivastava
- Structural Biology & Bioinformatics Laboratory, Department of Biosciences, Manipal University Jaipur, Dehmi Kalan, Off Jaipur-Ajmer Expressway, Jaipur, Rajasthan, 303007, India.
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7
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Neves D, Duarte-Pereira S, Matos S, Silva RM. Proteostasis networks in aging: novel insights from text-mining approaches. Biogerontology 2023:10.1007/s10522-023-10027-0. [PMID: 37004691 PMCID: PMC10267007 DOI: 10.1007/s10522-023-10027-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 03/06/2023] [Indexed: 04/04/2023]
Abstract
Aging is a topic of paramount importance in an increasingly elderly society and has been the focus of extensive research. Protein homeostasis (proteostasis) decline is a hallmark in aging and several age-related diseases, but which specific proteins and mechanisms are involved in proteostasis (de)regulation during the aging process remain largely unknown. Here, we used different text-mining tools complemented with protein-protein interaction data to address this complex topic. Analysis of the integrated protein interaction networks identified novel proteins and pathways associated to proteostasis mechanisms and aging or age-related disorders, indicating that this approach is useful to identify previously unknown links and for retrieving information of potential novel biomarkers or therapeutic targets.
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Affiliation(s)
- Diogo Neves
- Department of Medical Sciences & iBiMED, University of Aveiro, Aveiro, Portugal
| | - Sara Duarte-Pereira
- Department of Medical Sciences & iBiMED, University of Aveiro, Aveiro, Portugal
- IEETA, University of Aveiro, Aveiro, Portugal
| | - Sérgio Matos
- IEETA, University of Aveiro, Aveiro, Portugal
- DETI, University of Aveiro, Aveiro, Portugal
| | - Raquel M Silva
- Department of Medical Sciences & iBiMED, University of Aveiro, Aveiro, Portugal.
- Universidade Católica Portuguesa, Faculdade de Medicina Dentária, Centro de Investigação Interdisciplinar em Saúde, Estrada da Circunvalação, 3504-505, Viseu, Portugal.
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8
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Sadr Z, Ghasemi A, Rohani M, Alavi A. NMNAT1 and hereditary spastic paraplegia (HSP): expanding the phenotypic spectrum of NMNAT1 variants. Neuromuscul Disord 2023; 33:295-301. [PMID: 36871412 DOI: 10.1016/j.nmd.2023.02.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 02/05/2023] [Accepted: 02/06/2023] [Indexed: 02/10/2023]
Abstract
In the NAD biosynthetic network, the nicotinamide mononucleotide adenylyltransferase (NMNAT) enzyme fuels NAD as a co-substrate for a group of enzymes. Mutations in the nuclear-specific isoform, NMNAT1, have been extensively reported as the cause of Leber congenital amaurosis-type 9 (LCA9). However, there are no reports of NMNAT1 mutations causing neurological disorders by disrupting the maintenance of physiological NAD homeostasis in other types of neurons. In this study, for the first time, the potential association between a NMNAT1 variant and hereditary spastic paraplegia (HSP) is described. Whole-exome sequencing was performed for two affected siblings diagnosed with HSP. Runs of homozygosity (ROH) were detected. The shared variants of the siblings located in the homozygosity blocks were selected. The candidate variant was amplified and Sanger sequenced in the proband and other family members. Homozygous variant c.769G>A:p.(Glu257Lys) in NMNAT1, the most common variant of NMNAT1 in LCA9 patients, located in the ROH of chromosome 1, was detected as a probable disease-causing variant. After detection of the variant in NMNAT1, as a LCA9-causative gene, ophthalmological and neurological re-evaluations were performed. No ophthalmological abnormality was detected and the clinical manifestations of these patients were completely consistent with pure HSP. No NMNAT1 variant had ever been previously reported in HSP patients. However, NMNAT1 variants have been reported in a syndromic form of LCA which is associated with ataxia. In conclusion, our patients expand the clinical spectrum of NMNAT1 variants and represent the first evidence of the probable correlation between NMNAT1 variants and HSP.
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Affiliation(s)
- Zahra Sadr
- Genetics research center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Aida Ghasemi
- Genetics research center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Mohammad Rohani
- Department of Neurology, Iran University of Medical Sciences, Hazrat Rasool Hospital, Tehran, Iran.
| | - Afagh Alavi
- Genetics research center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
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Duarte-Pereira S, Matos S, Oliveira JL, Silva RM. Study of NAD-interacting proteins highlights the extent of NAD regulatory roles in the cell and its potential as a therapeutic target. J Integr Bioinform 2023:jib-2022-0049. [PMID: 36880517 PMCID: PMC10389049 DOI: 10.1515/jib-2022-0049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Accepted: 02/08/2023] [Indexed: 03/08/2023] Open
Abstract
Nicotinamide adenine dinucleotide (NAD) levels are essential for the normal physiology of the cell and are strictly regulated to prevent pathological conditions. NAD functions as a coenzyme in redox reactions, as a substrate of regulatory proteins, and as a mediator of protein-protein interactions. The main objectives of this study were to identify the NAD-binding and NAD-interacting proteins, and to uncover novel proteins and functions that could be regulated by this metabolite. It was considered if cancer-associated proteins were potential therapeutic targets. Using multiple experimental databases, we defined datasets of proteins that directly interact with NAD - the NAD-binding proteins (NADBPs) dataset - and of proteins that interact with NADBPs - the NAD-protein-protein interactions (NAD-PPIs) dataset. Pathway enrichment analysis revealed that NADBPs participate in several metabolic pathways, while NAD-PPIs are mostly involved in signalling pathways. These include disease-related pathways, namely, three major neurodegenerative disorders: Alzheimer's disease, Huntington's disease, and Parkinson's disease. Then, the complete human proteome was further analysed to select potential NADBPs. TRPC3 and isoforms of diacylglycerol (DAG) kinases, which are involved in calcium signalling, were identified as new NADBPs. Potential therapeutic targets that interact with NAD were identified, that have regulatory and signalling functions in cancer and neurodegenerative diseases.
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Affiliation(s)
- Sara Duarte-Pereira
- IEETA/DETI, University of Aveiro, Aveiro, Portugal.,Department of Medical Sciences, iBiMED - Institute of Biomedicine, University of Aveiro, Aveiro, Portugal
| | - Sérgio Matos
- IEETA/DETI, University of Aveiro, Aveiro, Portugal.,LASI - Intelligent Systems Associate Laboratory, Guimarães, Portugal
| | - José Luís Oliveira
- IEETA/DETI, University of Aveiro, Aveiro, Portugal.,LASI - Intelligent Systems Associate Laboratory, Guimarães, Portugal
| | - Raquel M Silva
- Department of Medical Sciences, iBiMED - Institute of Biomedicine, University of Aveiro, Aveiro, Portugal.,Universidade Católica Portuguesa, Faculty of Dental Medicine, Center for Interdisciplinary Research in Health (CIIS), Viseu, Portugal
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Minazzato G, Gasparrini M, Heroux A, Sernova NV, Rodionov DA, Cianci M, Sorci L, Raffaelli N. Bacterial NadQ (COG4111) is a Nudix-like, ATP-responsive regulator of NAD biosynthesis. J Struct Biol 2022; 214:107917. [PMID: 36332744 DOI: 10.1016/j.jsb.2022.107917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 10/13/2022] [Accepted: 10/27/2022] [Indexed: 11/06/2022]
Abstract
Nicotinamide-adenine dinucleotide (NAD) is centrally important to metabolic reactions that involve redox chemistry. In bacteria, NAD biosynthesis is controlled by different transcription factors, depending on the species. Among the four regulators identified so far, the protein NadQ is reported to act as a repressor of the de novo NAD biosynthetic pathway in proteobacteria. Using comparative genomics, a systematic reconstruction of NadQ regulons in thousands of fully sequenced bacterial genomes has been performed, confirming that NadQ is present in α-proteobacteria and some β- and γ-proteobacteria, including pathogens like Bordetella pertussis and Neisseria meningitidis, where it likely controls de novo NAD biosynthesis. Through mobility shift assay and mutagenesis, the DNA binding activity of NadQ from Agrobacterium tumefaciens was experimentally validated and determined to be suppressed by ATP. The crystal structures of NadQ in native form and in complex with ATP were determined, indicating that NadQ is a dimer, with each monomer composed of an N-terminal Nudix domain hosting the effector binding site and a C-terminal winged helix-turn-helix domain that binds DNA. Within the dimer, we found one ATP molecule bound, at saturating concentration of the ligand, in keeping with an intrinsic asymmetry of the quaternary structure. Overall, this study provided the basis for depicting a working model of NadQ regulation mechanism.
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Affiliation(s)
- Gabriele Minazzato
- Department of Agricultural, Food and Environmental Sciences, Polytechnic University of Marche, Ancona, Italy
| | - Massimiliano Gasparrini
- Department of Agricultural, Food and Environmental Sciences, Polytechnic University of Marche, Ancona, Italy
| | - Annie Heroux
- Elettra - Sincrotrone Trieste S.C.P.A., Basovizza, Italy
| | - Natalia V Sernova
- A. A. Kharkevich Institute for Information Transmission Problems, Russian Academy of Sciences, Moscow, Russia
| | - Dmitry A Rodionov
- A. A. Kharkevich Institute for Information Transmission Problems, Russian Academy of Sciences, Moscow, Russia; Sanford-Burnham-Prebys Medical Discovery Institute, La Jolla, CA, USA
| | - Michele Cianci
- Department of Agricultural, Food and Environmental Sciences, Polytechnic University of Marche, Ancona, Italy
| | - Leonardo Sorci
- Department of Materials, Environmental Sciences and Urban Planning, Division of Bioinformatics and Biochemistry, Polytechnic University of Marche, Ancona, Italy.
| | - Nadia Raffaelli
- Department of Agricultural, Food and Environmental Sciences, Polytechnic University of Marche, Ancona, Italy.
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11
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Nizami HL, Minor KE, Chiao YA, Light CM, Lee CF. Sexually dimorphic effects of SARM1 deletion on cardiac NAD + metabolism and function. Am J Physiol Heart Circ Physiol 2022; 323:H774-H781. [PMID: 36053750 PMCID: PMC9529255 DOI: 10.1152/ajpheart.00370.2022] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/17/2022] [Accepted: 08/24/2022] [Indexed: 11/22/2022]
Abstract
Nicotinamide adenine dinucleotide (NAD+) decline is repeatedly observed in heart disease and its risk factors. Although strategies promoting NAD+ synthesis to elevate NAD+ levels improve cardiac function, whether inhibition of NAD+ consumption can be therapeutic is less investigated. In this study, we examined the role of sterile-α and TIR motif containing 1 (SARM1) NAD+ hydrolase in mouse hearts, using global SARM1-knockout mice (KO). Cardiac function was assessed by echocardiography in male and female KO mice and wild-type (WT) controls. Hearts were collected for biochemical, histological, and molecular analyses. We found that the cardiac NAD+ pool was elevated in female KO mice, but only trended to increase in male KO mice. SARM1 deletion induced changes to a greater number of NAD+ metabolism transcripts in male mice than in female mice. Body weights, cardiac systolic and diastolic function, and geometry showed no changes in both male and female KO mice compared with WT counterparts. Male KO mice showed a small, but significant, elevation in cardiac collagen levels compared with WT counterparts, but no difference in collagen levels was detected in female mice. The increased collagen levels were associated with greater number of altered profibrotic and senescence-associated inflammatory genes in male KO mice, but not in female KO mice.NEW & NOTEWORTHY We examined the effects of SARM1 deletion on NAD+ pool, transcripts of NAD+ metabolism, and fibrotic pathway for the first time in mouse hearts. We observed the sexually dimorphic effects of SARM1 deletion. How these sex-dependent effects influence the outcomes of SARM1 deficiency in male and female mice in responses to cardiac stresses warrant further investigation. The elevation of cardiac NAD+ pool by SARM1 deletion provides evidence that targeting SARM1 may reverse disease-related NAD+ decline.
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Affiliation(s)
- Hina Lateef Nizami
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma
| | - Keaton E Minor
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma
- Department of Physiology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Ying Ann Chiao
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma
- Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Christine M Light
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma
| | - Chi Fung Lee
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma
- Department of Physiology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
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12
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Weagley JS, Zaydman M, Venkatesh S, Sasaki Y, Damaraju N, Yenkin A, Buchser W, Rodionov DA, Osterman A, Ahmed T, Barratt MJ, DiAntonio A, Milbrandt J, Gordon JI. Products of gut microbial Toll/interleukin-1 receptor domain NADase activities in gnotobiotic mice and Bangladeshi children with malnutrition. Cell Rep 2022; 39:110738. [PMID: 35476981 DOI: 10.1016/j.celrep.2022.110738] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 01/05/2022] [Accepted: 04/04/2022] [Indexed: 12/04/2022] Open
Abstract
Perturbed gut microbiome development has been linked to childhood malnutrition. Here, we characterize bacterial Toll/interleukin-1 receptor (TIR) protein domains that metabolize nicotinamide adenine dinucleotide (NAD), a co-enzyme with far-reaching effects on human physiology. A consortium of 26 human gut bacterial strains, representing the diversity of TIRs observed in the microbiome and the NAD hydrolase (NADase) activities of a subset of 152 bacterial TIRs assayed in vitro, was introduced into germ-free mice. Integrating mass spectrometry and microbial RNA sequencing (RNA-seq) with consortium membership manipulation disclosed that a variant of cyclic-ADPR (v-cADPR-x) is a specific product of TIR NADase activity and a prominent, colonization-discriminatory, taxon-specific metabolite. Guided by bioinformatic analyses of biochemically validated TIRs, we find that acute malnutrition is associated with decreased fecal levels of genes encoding TIRs known or predicted to generate v-cADPR-x, as well as decreased levels of the metabolite itself. These results underscore the need to consider microbiome TIR NADases when evaluating NAD metabolism in the human holobiont.
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13
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Zeidler JD, Hogan KA, Agorrody G, Peclat TR, Kashyap S, Kanamori KS, Gomez LS, Mazdeh DZ, Warner GM, Thompson KL, Chini CCS, Chini EN. The CD38 glycohydrolase and the NAD sink: implications for pathological conditions. Am J Physiol Cell Physiol 2022; 322:C521-C545. [PMID: 35138178 PMCID: PMC8917930 DOI: 10.1152/ajpcell.00451.2021] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Nicotinamide adenine dinucleotide (NAD) acts as a cofactor in several oxidation-reduction (redox) reactions and is a substrate for a number of nonredox enzymes. NAD is fundamental to a variety of cellular processes including energy metabolism, cell signaling, and epigenetics. NAD homeostasis appears to be of paramount importance to health span and longevity, and its dysregulation is associated with multiple diseases. NAD metabolism is dynamic and maintained by synthesis and degradation. The enzyme CD38, one of the main NAD-consuming enzymes, is a key component of NAD homeostasis. The majority of CD38 is localized in the plasma membrane with its catalytic domain facing the extracellular environment, likely for the purpose of controlling systemic levels of NAD. Several cell types express CD38, but its expression predominates on endothelial cells and immune cells capable of infiltrating organs and tissues. Here we review potential roles of CD38 in health and disease and postulate ways in which CD38 dysregulation causes changes in NAD homeostasis and contributes to the pathophysiology of multiple conditions. Indeed, in animal models the development of infectious diseases, autoimmune disorders, fibrosis, metabolic diseases, and age-associated diseases including cancer, heart disease, and neurodegeneration are associated with altered CD38 enzymatic activity. Many of these conditions are modified in CD38-deficient mice or by blocking CD38 NADase activity. In diseases in which CD38 appears to play a role, CD38-dependent NAD decline is often a common denominator of pathophysiology. Thus, understanding dysregulation of NAD homeostasis by CD38 may open new avenues for the treatment of human diseases.
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Affiliation(s)
- Julianna D. Zeidler
- 1Signal Transduction and Molecular Nutrition Laboratory, Kogod Aging Center, Department of Anesthesiology and Perioperative Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Kelly A. Hogan
- 1Signal Transduction and Molecular Nutrition Laboratory, Kogod Aging Center, Department of Anesthesiology and Perioperative Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Guillermo Agorrody
- 3Departamento de Fisiopatología, Hospital de Clínicas, Montevideo, Uruguay,4Laboratorio de Patologías del Metabolismo y el Envejecimiento, Instituto Pasteur de Montevideo, Montevideo, Uruguay
| | - Thais R. Peclat
- 1Signal Transduction and Molecular Nutrition Laboratory, Kogod Aging Center, Department of Anesthesiology and Perioperative Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Sonu Kashyap
- 2Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Jacksonville, Florida
| | - Karina S. Kanamori
- 1Signal Transduction and Molecular Nutrition Laboratory, Kogod Aging Center, Department of Anesthesiology and Perioperative Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Lilian Sales Gomez
- 1Signal Transduction and Molecular Nutrition Laboratory, Kogod Aging Center, Department of Anesthesiology and Perioperative Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Delaram Z. Mazdeh
- 1Signal Transduction and Molecular Nutrition Laboratory, Kogod Aging Center, Department of Anesthesiology and Perioperative Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Gina M. Warner
- 1Signal Transduction and Molecular Nutrition Laboratory, Kogod Aging Center, Department of Anesthesiology and Perioperative Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Katie L. Thompson
- 1Signal Transduction and Molecular Nutrition Laboratory, Kogod Aging Center, Department of Anesthesiology and Perioperative Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Claudia C. S. Chini
- 2Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Jacksonville, Florida
| | - Eduardo Nunes Chini
- 1Signal Transduction and Molecular Nutrition Laboratory, Kogod Aging Center, Department of Anesthesiology and Perioperative Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota,2Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Jacksonville, Florida
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14
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Llobet Rosell A, Paglione M, Gilley J, Kocia M, Perillo G, Gasparrini M, Cialabrini L, Raffaelli N, Angeletti C, Orsomando G, Wu PH, Coleman MP, Loreto A, Neukomm LJ. The NAD + precursor NMN activates dSarm to trigger axon degeneration in Drosophila. eLife 2022; 11:80245. [PMID: 36476387 PMCID: PMC9788811 DOI: 10.7554/elife.80245] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 12/06/2022] [Indexed: 12/12/2022] Open
Abstract
Axon degeneration contributes to the disruption of neuronal circuit function in diseased and injured nervous systems. Severed axons degenerate following the activation of an evolutionarily conserved signaling pathway, which culminates in the activation of SARM1 in mammals to execute the pathological depletion of the metabolite NAD+. SARM1 NADase activity is activated by the NAD+ precursor nicotinamide mononucleotide (NMN). In mammals, keeping NMN levels low potently preserves axons after injury. However, it remains unclear whether NMN is also a key mediator of axon degeneration and dSarm activation in flies. Here, we demonstrate that lowering NMN levels in Drosophila through the expression of a newly generated prokaryotic NMN-Deamidase (NMN-D) preserves severed axons for months and keeps them circuit-integrated for weeks. NMN-D alters the NAD+ metabolic flux by lowering NMN, while NAD+ remains unchanged in vivo. Increased NMN synthesis by the expression of mouse nicotinamide phosphoribosyltransferase (mNAMPT) leads to faster axon degeneration after injury. We also show that NMN-induced activation of dSarm mediates axon degeneration in vivo. Finally, NMN-D delays neurodegeneration caused by loss of the sole NMN-consuming and NAD+-synthesizing enzyme dNmnat. Our results reveal a critical role for NMN in neurodegeneration in the fly, which extends beyond axonal injury. The potent neuroprotection by reducing NMN levels is similar to the interference with other essential mediators of axon degeneration in Drosophila.
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Affiliation(s)
- Arnau Llobet Rosell
- Department of Fundamental Neurosciences, University of LausanneLausanneSwitzerland
| | - Maria Paglione
- Department of Fundamental Neurosciences, University of LausanneLausanneSwitzerland
| | - Jonathan Gilley
- John van Geest Centre for Brain Repair, Department of Clinical Neurosciences, University of CambridgeCambridgeUnited Kingdom
| | - Magdalena Kocia
- Department of Fundamental Neurosciences, University of LausanneLausanneSwitzerland
| | - Giulia Perillo
- Department of Genetic Medicine and Development, University of GenevaGenevaSwitzerland
| | - Massimiliano Gasparrini
- Department of Agricultural, Food and Environmental Sciences, Polytechnic University of MarcheAnconaItaly
| | - Lucia Cialabrini
- Department of Agricultural, Food and Environmental Sciences, Polytechnic University of MarcheAnconaItaly
| | - Nadia Raffaelli
- Department of Agricultural, Food and Environmental Sciences, Polytechnic University of MarcheAnconaItaly
| | - Carlo Angeletti
- Department of Clinical Sciences, Section of Biochemistry, Polytechnic University of MarcheAnconaItaly
| | - Giuseppe Orsomando
- Department of Clinical Sciences, Section of Biochemistry, Polytechnic University of MarcheAnconaItaly
| | - Pei-Hsuan Wu
- Department of Genetic Medicine and Development, University of GenevaGenevaSwitzerland
| | - Michael P Coleman
- John van Geest Centre for Brain Repair, Department of Clinical Neurosciences, University of CambridgeCambridgeUnited Kingdom
| | - Andrea Loreto
- John van Geest Centre for Brain Repair, Department of Clinical Neurosciences, University of CambridgeCambridgeUnited Kingdom
| | - Lukas Jakob Neukomm
- Department of Fundamental Neurosciences, University of LausanneLausanneSwitzerland
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15
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Cuny H, Kristianto E, Hodson MP, Dunwoodie SL. Simultaneous quantification of 26 NAD-related metabolites in plasma, blood, and liver tissue using UHPLC-MS/MS. Anal Biochem 2021; 633:114409. [PMID: 34648806 DOI: 10.1016/j.ab.2021.114409] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 09/15/2021] [Accepted: 10/07/2021] [Indexed: 01/23/2023]
Abstract
Nicotinamide adenine dinucleotide (NAD) is a key metabolic intermediate found in all cells and involved in numerous cellular functions. Perturbances in the NAD metabolome are linked to various diseases such as diabetes and schizophrenia, and to congenital malformations and recurrent miscarriage. Mouse models are central to the investigation of these and other NAD-related conditions because mice can be readily genetically modified and treated with diets with altered concentrations of NAD precursors. Simultaneous quantification of as many metabolites of the NAD metabolome as possible is required to understand which pathways are affected in these disease conditions and what are the functional consequences. Here, we report the development of a fit-for-purpose method to simultaneously quantify 26 NAD-related metabolites and creatinine in mouse plasma, whole blood, and liver tissue using ultra-high performance liquid chromatography - tandem mass spectrometry (UHPLC-MS/MS). The included metabolites represent dietary precursors, intermediates, enzymatic cofactors, and excretion products. Sample preparation was optimized for each matrix and included 21 isotope-labeled internal standards. The method reached adequate precision and accuracy for the intended context of use of exploratory pathway-related biomarker discovery in mouse models. The method was tested by determining metabolite concentrations in mice fed a special diet with defined precursor content.
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Affiliation(s)
- Hartmut Cuny
- Developmental and Stem Cell Biology Division, Victor Chang Cardiac Research Institute, Sydney, New South Wales, 2010, Australia; Faculty of Medicine, University of New South Wales, Sydney, New South Wales, 2052, Australia.
| | - Esther Kristianto
- Victor Chang Cardiac Research Institute Innovation Centre, Sydney, New South Wales, 2010, Australia.
| | - Mark P Hodson
- Victor Chang Cardiac Research Institute Innovation Centre, Sydney, New South Wales, 2010, Australia; School of Pharmacy, University of Queensland, Woolloongabba, Queensland, 4102, Australia.
| | - Sally L Dunwoodie
- Developmental and Stem Cell Biology Division, Victor Chang Cardiac Research Institute, Sydney, New South Wales, 2010, Australia; Faculty of Medicine, University of New South Wales, Sydney, New South Wales, 2052, Australia; Faculty of Science, University of New South Wales, Sydney, New South Wales, 2052, Australia.
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16
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Daussin FN, Cuillerier A, Touron J, Bensaid S, Melo B, Al Rewashdy A, Vasam G, Menzies KJ, Harper ME, Heyman E, Burelle Y. Dietary Cocoa Flavanols Enhance Mitochondrial Function in Skeletal Muscle and Modify Whole-Body Metabolism in Healthy Mice. Nutrients 2021; 13:nu13103466. [PMID: 34684467 PMCID: PMC8538722 DOI: 10.3390/nu13103466] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 09/22/2021] [Accepted: 09/28/2021] [Indexed: 01/18/2023] Open
Abstract
Mitochondrial dysfunction is widely reported in various diseases and contributes to their pathogenesis. We assessed the effect of cocoa flavanols supplementation on mitochondrial function and whole metabolism, and we explored whether the mitochondrial deacetylase sirtuin-3 (Sirt3) is involved or not. We explored the effects of 15 days of CF supplementation in wild type and Sirt3-/- mice. Whole-body metabolism was assessed by indirect calorimetry, and an oral glucose tolerance test was performed to assess glucose metabolism. Mitochondrial respiratory function was assessed in permeabilised fibres and the pyridine nucleotides content (NAD+ and NADH) were quantified. In the wild type, CF supplementation significantly modified whole-body metabolism by promoting carbohydrate use and improved glucose tolerance. CF supplementation induced a significant increase of mitochondrial mass, while significant qualitative adaptation occurred to maintain H2O2 production and cellular oxidative stress. CF supplementation induced a significant increase in NAD+ and NADH content. All the effects mentioned above were blunted in Sirt3-/- mice. Collectively, CF supplementation boosted the NAD metabolism that stimulates sirtuins metabolism and improved mitochondrial function, which likely contributed to the observed whole-body metabolism adaptation, with a greater ability to use carbohydrates, at least partially through Sirt3.
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Affiliation(s)
- Frédéric Nicolas Daussin
- ULR 7369—URePSSS—Unité de Recherche Pluridisciplinaire Sport Santé Société, University Lille, University Artois, University Littoral Côte d’Opale, F-59000 Lille, France; (S.B.); (E.H.)
- Correspondence: ; Tel.: +33-(0)3-20-00-73-69
| | - Alexane Cuillerier
- Interdisciplinary School of Health Sciences and Faculty of Health Sciences, University of Ottawa, Ottawa, ON K1H 8M5, Canada; (A.C.); (A.A.R.); (G.V.); (K.J.M.); (Y.B.)
| | - Julianne Touron
- INRAE, UMR1019, Unité de Nutrition Humaine (UNH), Équipe ASMS, Université Clermont Auvergne, 63001 Clermont-Ferrand, France;
| | - Samir Bensaid
- ULR 7369—URePSSS—Unité de Recherche Pluridisciplinaire Sport Santé Société, University Lille, University Artois, University Littoral Côte d’Opale, F-59000 Lille, France; (S.B.); (E.H.)
| | - Bruno Melo
- Department of Physical Education, Exercise Physiology Laboratory, Federal University of Minas Gerais, Belo Horizonte, MG 31270-901, Brazil;
| | - Ali Al Rewashdy
- Interdisciplinary School of Health Sciences and Faculty of Health Sciences, University of Ottawa, Ottawa, ON K1H 8M5, Canada; (A.C.); (A.A.R.); (G.V.); (K.J.M.); (Y.B.)
| | - Goutham Vasam
- Interdisciplinary School of Health Sciences and Faculty of Health Sciences, University of Ottawa, Ottawa, ON K1H 8M5, Canada; (A.C.); (A.A.R.); (G.V.); (K.J.M.); (Y.B.)
| | - Keir J. Menzies
- Interdisciplinary School of Health Sciences and Faculty of Health Sciences, University of Ottawa, Ottawa, ON K1H 8M5, Canada; (A.C.); (A.A.R.); (G.V.); (K.J.M.); (Y.B.)
- Department of Biochemistry Microbiology and Immunology, Faculty of Medicine, Ottawa Institute of Systems Biology, University of Ottawa, Ottawa, ON K1H 8M5, Canada;
| | - Mary-Ellen Harper
- Department of Biochemistry Microbiology and Immunology, Faculty of Medicine, Ottawa Institute of Systems Biology, University of Ottawa, Ottawa, ON K1H 8M5, Canada;
| | - Elsa Heyman
- ULR 7369—URePSSS—Unité de Recherche Pluridisciplinaire Sport Santé Société, University Lille, University Artois, University Littoral Côte d’Opale, F-59000 Lille, France; (S.B.); (E.H.)
| | - Yan Burelle
- Interdisciplinary School of Health Sciences and Faculty of Health Sciences, University of Ottawa, Ottawa, ON K1H 8M5, Canada; (A.C.); (A.A.R.); (G.V.); (K.J.M.); (Y.B.)
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17
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Strømland Ø, Diab J, Ferrario E, Sverkeli LJ, Ziegler M. The balance between NAD + biosynthesis and consumption in ageing. Mech Ageing Dev 2021; 199:111569. [PMID: 34509469 DOI: 10.1016/j.mad.2021.111569] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 08/18/2021] [Accepted: 09/08/2021] [Indexed: 01/07/2023]
Abstract
Nicotinamide adenine dinucleotide (NAD+) is a vital coenzyme in redox reactions. NAD+ is also important in cellular signalling as it is consumed by PARPs, SARM1, sirtuins and CD38. Cellular NAD+ levels regulate several essential processes including DNA repair, immune cell function, senescence, and chromatin remodelling. Maintenance of these cellular processes is important for healthy ageing and lifespan. Interestingly, the levels of NAD+ decline during ageing in several organisms, including humans. Declining NAD+ levels have been linked to several age-related diseases including various metabolic diseases and cognitive decline. Decreasing tissue NAD+ concentrations have been ascribed to an imbalance between biosynthesis and consumption of the dinucleotide, resulting from, for instance, reduced levels of the rate limiting enzyme NAMPT along with an increased activation state of the NAD+-consuming enzymes PARPs and CD38. The progression of some age-related diseases can be halted or reversed by therapeutic augmentation of NAD+ levels. NAD+ metabolism has therefore emerged as a potential target to ameliorate age-related diseases. The present review explores how ageing affects NAD+ metabolism and current approaches to reverse the age-dependent decline of NAD+.
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Affiliation(s)
- Øyvind Strømland
- Department of Biomedicine, University of Bergen, Bergen, 5009, Norway
| | - Joseph Diab
- Department of Biomedicine, University of Bergen, Bergen, 5009, Norway
| | - Eugenio Ferrario
- Department of Biomedicine, University of Bergen, Bergen, 5009, Norway
| | - Lars J Sverkeli
- Department of Biomedicine, University of Bergen, Bergen, 5009, Norway; Department of Biological Sciences, University of Bergen, Bergen, 5020, Norway
| | - Mathias Ziegler
- Department of Biomedicine, University of Bergen, Bergen, 5009, Norway.
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18
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Subedi A, Liu Q, Ayyathan DM, Sharon D, Cathelin S, Hosseini M, Xu C, Voisin V, Bader GD, D'Alessandro A, Lechman ER, Dick JE, Minden MD, Wang JCY, Chan SM. Nicotinamide phosphoribosyltransferase inhibitors selectively induce apoptosis of AML stem cells by disrupting lipid homeostasis. Cell Stem Cell 2021; 28:1851-1867.e8. [PMID: 34293334 DOI: 10.1016/j.stem.2021.06.004] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 05/05/2021] [Accepted: 06/22/2021] [Indexed: 12/29/2022]
Abstract
Current treatments for acute myeloid leukemia (AML) are often ineffective in eliminating leukemic stem cells (LSCs), which perpetuate the disease. Here, we performed a metabolic drug screen to identify LSC-specific vulnerabilities and found that nicotinamide phosphoribosyltransferase (NAMPT) inhibitors selectively killed LSCs, while sparing normal hematopoietic stem and progenitor cells. Treatment with KPT-9274, a NAMPT inhibitor, suppressed the conversion of saturated fatty acids to monounsaturated fatty acids, a reaction catalyzed by the stearoyl-CoA desaturase (SCD) enzyme, resulting in apoptosis of AML cells. Transcriptomic analysis of LSCs treated with KPT-9274 revealed an upregulation of sterol regulatory-element binding protein (SREBP)-regulated genes, including SCD, which conferred partial protection against NAMPT inhibitors. Inhibition of SREBP signaling with dipyridamole enhanced the cytotoxicity of KPT-9274 on LSCs in vivo. Our work demonstrates that altered lipid homeostasis plays a key role in NAMPT inhibitor-induced apoptosis and identifies NAMPT inhibition as a therapeutic strategy for targeting LSCs in AML.
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Affiliation(s)
- Amit Subedi
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Qiang Liu
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Dhanoop M Ayyathan
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - David Sharon
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Severine Cathelin
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Mohsen Hosseini
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Changjiang Xu
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada; Donnelly Centre for Cellular and Biomolecular Research, Toronto, ON, Canada
| | - Veronique Voisin
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada; Donnelly Centre for Cellular and Biomolecular Research, Toronto, ON, Canada
| | - Gary D Bader
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada; Donnelly Centre for Cellular and Biomolecular Research, Toronto, ON, Canada
| | - Angelo D'Alessandro
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver, Aurora, CO, USA
| | - Eric R Lechman
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - John E Dick
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - Mark D Minden
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada; Department of Medicine, University of Toronto, ON, Canada; Division of Medical Oncology and Hematology, Department of Medicine, University Health Network, Toronto, ON, Canada
| | - Jean C Y Wang
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada; Department of Medicine, University of Toronto, ON, Canada; Division of Medical Oncology and Hematology, Department of Medicine, University Health Network, Toronto, ON, Canada
| | - Steven M Chan
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada; Department of Medicine, University of Toronto, ON, Canada; Division of Medical Oncology and Hematology, Department of Medicine, University Health Network, Toronto, ON, Canada.
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19
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Affiliation(s)
- Kelly A. Hyndman
- Section of Cardio-Renal Physiology and Medicine, Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Matthew D. Griffin
- Regenerative Medicine Institute at CÚRAM Centre for Research in Medical Devices, School of Medicine, National University of Ireland Galway, Galway, Ireland,Department of Nephrology, Saolta University Health Care Group, Galway University Hospitals, Galway, Ireland
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20
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Lee KA, Robbins PD, Camell CD. Intersection of immunometabolism and immunosenescence during aging. Curr Opin Pharmacol 2021; 57:107-116. [PMID: 33684669 DOI: 10.1016/j.coph.2021.01.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 01/17/2021] [Accepted: 01/27/2021] [Indexed: 12/15/2022]
Abstract
Aging is associated with the highest risk for morbidity and mortality to chronic or metabolic diseases, which are present in 50% of the elderly. Improving metabolic and immune function of the elderly would improve quality of life and reduce the risk for all other diseases. Tissue-resident macrophages and the NLRP3 inflammasome are established drivers of inflammaging and metabolic dysfunction. Energy-sensing signaling pathways connect sterile and metabolic inflammation with cellular senescence and tissue dysfunction. We discuss recent advances in the immunometabolism field. Common themes revealed by recent publications include the alterations in metabolic signaling (SIRTUIN, AMPK, or mTOR pathways) in aged immune cells, the impact of senescence on inflammaging and tissue dysfunction, and the age-related changes in metabolic tissues, especially adipose tissue, as an immunological organ. Promising gerotherapeutics are candidates to broadly target nutrient and energy sensing, inflammatory and senescence pathways, and have potential to improve healthspan and treat age-related diseases.
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Affiliation(s)
- Kyoo-A Lee
- Institute on the Biology of Aging and Metabolism, Department of Biochemistry, Molecular Biology and Biophysics, 4-108 Nils Hasselmo Hall, University of Minnesota, Minneapolis, MN, USA
| | - Paul D Robbins
- Institute on the Biology of Aging and Metabolism, Department of Biochemistry, Molecular Biology and Biophysics, 4-108 Nils Hasselmo Hall, University of Minnesota, Minneapolis, MN, USA
| | - Christina D Camell
- Institute on the Biology of Aging and Metabolism, Department of Biochemistry, Molecular Biology and Biophysics, 4-108 Nils Hasselmo Hall, University of Minnesota, Minneapolis, MN, USA.
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21
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Wozniak CE, Hendriksen JJ, Olivera BM, Roth JR, Hughes KT. Integration of the pSLT Plasmid into the Salmonella Chromosome Results in a Temperature-Sensitive Growth Defect Due to Aberrant DNA Replication. J Bacteriol 2020; 202:e00380-20. [PMID: 32747428 DOI: 10.1128/JB.00380-20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 07/16/2020] [Indexed: 11/20/2022] Open
Abstract
A mutant of Salmonella enterica serovar Typhimurium was isolated that simultaneously affected two metabolic pathways as follows: NAD metabolism and DNA repair. The mutant was isolated as resistant to a nicotinamide analog and as temperature-sensitive for growth on minimal glucose medium. In this mutant, Salmonella's 94-kb virulence plasmid pSLT had recombined into the chromosome upstream of the NAD salvage pathway gene pncA This insertion blocked most transcription of pncA, which reduced uptake of the nicotinamide analog. The pSLT insertion mutant also exhibited phenotypes associated with induction of the SOS DNA repair system, including an increase in filamentous cells, higher exonuclease III and catalase activities, and derepression of SOS gene expression. Genome sequencing revealed increased read coverage extending out from the site of pSLT insertion. The two pSLT replication origins are likely initiating replication of the chromosome near the normal replication terminus. Too much replication initiation at the wrong site is probably causing the observed growth defects. Accordingly, deletion of both pSLT replication origins restored growth at higher temperatures.IMPORTANCE In studies that insert a second replication origin into the chromosome, both origins are typically active at the same time. In contrast, the integrated pSLT plasmid initiated replication in stationary phase after normal chromosomal replication had finished. The gradient in read coverage extending out from a single site could be a simple but powerful tool for studying replication and detecting chromosomal rearrangements. This technique may be of particular value when a genome has been sequenced for the first time to verify correct assembly.
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22
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Sun C, Wang K, Stock AJ, Gong Y, Demarest TG, Yang B, Giri N, Harrington L, Alter BP, Savage SA, Bohr VA, Liu Y. Re-equilibration of imbalanced NAD metabolism ameliorates the impact of telomere dysfunction. EMBO J 2020; 39:e103420. [PMID: 32935380 PMCID: PMC7604620 DOI: 10.15252/embj.2019103420] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 08/05/2020] [Accepted: 08/20/2020] [Indexed: 12/16/2022] Open
Abstract
Short telomeres are a principal defining feature of telomere biology disorders, such as dyskeratosis congenita (DC), for which there are no effective treatments. Here, we report that primary fibroblasts from DC patients and late generation telomerase knockout mice display lower nicotinamide adenine dinucleotide (NAD) levels, and an imbalance in the NAD metabolome that includes elevated CD38 NADase and reduced poly(ADP‐ribose) polymerase and SIRT1 activities, respectively, affecting many associated biological pathways. Supplementation with the NAD precursor, nicotinamide riboside, and CD38 inhibition improved NAD homeostasis, thereby alleviating telomere damage, defective mitochondrial biosynthesis and clearance, cell growth retardation, and cellular senescence of DC fibroblasts. These findings reveal a direct, underlying role of NAD dysregulation when telomeres are short and underscore its relevance to the pathophysiology and interventions of human telomere‐driven diseases.
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Affiliation(s)
- Chongkui Sun
- Biomedical Research Center, National Institute on Aging/National Institutes of Health, Baltimore, MD, USA
| | - Kun Wang
- Biomedical Research Center, National Institute on Aging/National Institutes of Health, Baltimore, MD, USA
| | - Amanda J Stock
- Biomedical Research Center, National Institute on Aging/National Institutes of Health, Baltimore, MD, USA
| | - Yi Gong
- Biomedical Research Center, National Institute on Aging/National Institutes of Health, Baltimore, MD, USA
| | - Tyler G Demarest
- Biomedical Research Center, National Institute on Aging/National Institutes of Health, Baltimore, MD, USA
| | - Beimeng Yang
- Biomedical Research Center, National Institute on Aging/National Institutes of Health, Baltimore, MD, USA
| | - Neelam Giri
- Clinical Genetics Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Lea Harrington
- Institut de Recherche en Immunologie et en Cancérologie, Université de Montréal, Montréal, QC, Canada
| | - Blanche P Alter
- Clinical Genetics Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Sharon A Savage
- Clinical Genetics Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Vilhelm A Bohr
- Biomedical Research Center, National Institute on Aging/National Institutes of Health, Baltimore, MD, USA
| | - Yie Liu
- Biomedical Research Center, National Institute on Aging/National Institutes of Health, Baltimore, MD, USA
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Abele F, Höfer K, Bernhard P, Grawenhoff J, Seidel M, Krause A, Kopf S, Schröter M, Jäschke A. A Novel NAD-RNA Decapping Pathway Discovered by Synthetic Light-Up NAD-RNAs. Biomolecules 2020; 10:E513. [PMID: 32231086 DOI: 10.3390/biom10040513] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 03/26/2020] [Accepted: 03/27/2020] [Indexed: 12/20/2022] Open
Abstract
The complexity of the transcriptome is governed by the intricate interplay of transcription, RNA processing, translocation, and decay. In eukaryotes, the removal of the 5’-RNA cap is essential for the initiation of RNA degradation. In addition to the canonical 5’-N7-methyl guanosine cap in eukaryotes, the ubiquitous redox cofactor nicotinamide adenine dinucleotide (NAD) was identified as a new 5’-RNA cap structure in prokaryotic and eukaryotic organisms. So far, two classes of NAD-RNA decapping enzymes have been identified, namely Nudix enzymes that liberate nicotinamide mononucleotide (NMN) and DXO-enzymes that remove the entire NAD cap. Herein, we introduce 8-(furan-2-yl)-substituted NAD-capped-RNA (FurNAD-RNA) as a new research tool for the identification and characterization of novel NAD-RNA decapping enzymes. These compounds are found to be suitable for various enzymatic reactions that result in the release of a fluorescence quencher, either nicotinamide (NAM) or nicotinamide mononucleotide (NMN), from the RNA which causes a fluorescence turn-on. FurNAD-RNAs allow for real-time quantification of decapping activity, parallelization, high-throughput screening and identification of novel decapping enzymes in vitro. Using FurNAD-RNAs, we discovered that the eukaryotic glycohydrolase CD38 processes NAD-capped RNA in vitro into ADP-ribose-modified-RNA and nicotinamide and therefore might act as a decapping enzyme in vivo. The existence of multiple pathways suggests that the decapping of NAD-RNA is an important and regulated process in eukaryotes.
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Fernie A, Hashida SN, Yoshimura K, Gakière B, Mou Z, Pétriacq P. Editorial: NAD Metabolism and Signaling in Plants. Front Plant Sci 2020; 11:146. [PMID: 32161612 PMCID: PMC7054218 DOI: 10.3389/fpls.2020.00146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 01/30/2020] [Indexed: 06/10/2023]
Affiliation(s)
- Alisdair Fernie
- Department of Molecular Physiology, MPI of Molecular Plant Physiology, Potsdam-Golm, Germany
| | - Shin-nosuke Hashida
- Environmental Science Research Laboratory, Central Research Institute of Electric Power Industry (CRIEPI), Abiko-shi, Japan
| | - Kazuya Yoshimura
- Department of Food and Nutritional Science, College of Bioscience and Biotechnology Chubu University, Kasugai, Japan
| | - Bertrand Gakière
- Institute of Plant Sciences Paris-Saclay (IPS2), UMR 9213/UMR1403, CNRS, INRAE, Université d’Evry, Université Paris-Diderot, Université Paris-Sud, Sorbonne Paris-Cité, Saclay Plant Sciences, Orsay, France
| | - Zhonglin Mou
- Department of Microbiology and Cell Science, University of Florida, Gainesville, FL, United States
| | - Pierre Pétriacq
- Université de Bordeaux, INRAE, UMR BFP, Plateforme Bordeaux Metabolome, Villenave d’Ornon, France
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25
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Kulikova V, Shabalin K, Nerinovski K, Yakimov A, Svetlova M, Solovjeva L, Kropotov A, Khodorkovskiy M, Migaud ME, Ziegler M, Nikiforov A. Degradation of Extracellular NAD + Intermediates in Cultures of Human HEK293 Cells. Metabolites 2019; 9:E293. [PMID: 31795381 PMCID: PMC6950141 DOI: 10.3390/metabo9120293] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 11/22/2019] [Accepted: 11/27/2019] [Indexed: 01/06/2023] Open
Abstract
Nicotinamide adenine dinucleotide (NAD) is an essential redox carrier, whereas its degradation is a key element of important signaling pathways. Human cells replenish their NAD contents through NAD biosynthesis from extracellular precursors. These precursors encompass bases nicotinamide (Nam) and nicotinic acid and their corresponding nucleosides nicotinamide riboside (NR) and nicotinic acid riboside (NAR), now collectively referred to as vitamin B3. In addition, extracellular NAD+ and nicotinamide mononucleotide (NMN), and potentially their deamidated counterparts, nicotinic acid adenine dinucleotide (NAAD) and nicotinic acid mononucleotide (NAMN), may serve as precursors of intracellular NAD. However, it is still debated whether nucleotides enter cells directly or whether they are converted to nucleosides and bases prior to uptake into cells. Here, we studied the metabolism of extracellular NAD+ and its derivatives in human HEK293 cells using normal and serum-free culture medium. Using medium containing 10% fetal bovine serum (FBS), mono- and dinucleotides were degraded to the corresponding nucleosides. In turn, the nucleosides were cleaved to their corresponding bases. Degradation was also observed in culture medium alone, in the absence of cells, indicating that FBS contains enzymatic activities which degrade NAD+ intermediates. Surprisingly, NR was also rather efficiently hydrolyzed to Nam in the absence of FBS. When cultivated in serum-free medium, HEK293 cells efficiently cleaved NAD+ and NAAD to NMN and NAMN. NMN exhibited rather high stability in cell culture, but was partially metabolized to NR. Using pharmacological inhibitors of plasma membrane transporters, we also showed that extracellular cleavage of NAD+ and NMN to NR is a prerequisite for using these nucleotides to maintain intracellular NAD contents. We also present evidence that, besides spontaneous hydrolysis, NR is intensively metabolized in cell culture by intracellular conversion to Nam. Our results demonstrate that both the cultured cells and the culture medium mediate a rather active conversion of NAD+ intermediates. Consequently, in studies of precursor supplementation and uptake, the culture conditions need to be carefully defined.
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Affiliation(s)
- Veronika Kulikova
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg 194064, Russia; (V.K.); (M.S.); (L.S.); (A.K.)
- Peter the Great St. Petersburg Polytechnic University, St. Petersburg 195251, Russia; (A.Y.); (M.K.)
- Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, St. Petersburg 194223, Russia
| | - Konstantin Shabalin
- Petersburg Nuclear Physics Institute Named by B.P. Konstantinov of National Research Centre “Kurchatov Institute”, Gatchina 188300, Russia;
| | - Kirill Nerinovski
- Department of Nuclear Physics Research Methods, St. Petersburg State University, St. Petersburg 199034, Russia;
| | - Alexander Yakimov
- Peter the Great St. Petersburg Polytechnic University, St. Petersburg 195251, Russia; (A.Y.); (M.K.)
- Petersburg Nuclear Physics Institute Named by B.P. Konstantinov of National Research Centre “Kurchatov Institute”, Gatchina 188300, Russia;
| | - Maria Svetlova
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg 194064, Russia; (V.K.); (M.S.); (L.S.); (A.K.)
| | - Ljudmila Solovjeva
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg 194064, Russia; (V.K.); (M.S.); (L.S.); (A.K.)
| | - Andrey Kropotov
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg 194064, Russia; (V.K.); (M.S.); (L.S.); (A.K.)
| | - Mikhail Khodorkovskiy
- Peter the Great St. Petersburg Polytechnic University, St. Petersburg 195251, Russia; (A.Y.); (M.K.)
| | - Marie E. Migaud
- Mitchell Cancer Institute, University of South Alabama, Mobile, AL 36604, USA;
| | - Mathias Ziegler
- Department of Biomedicine, University of Bergen, 5020 Bergen, Norway;
| | - Andrey Nikiforov
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg 194064, Russia; (V.K.); (M.S.); (L.S.); (A.K.)
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26
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Doke T, Ishimoto T, Hayasaki T, Ikeda S, Hasebe M, Hirayama A, Soga T, Kato N, Kosugi T, Tsuboi N, Lanaspa MA, Johnson RJ, Kadomatsu K, Maruyama S. Lacking ketohexokinase-A exacerbates renal injury in streptozotocin-induced diabetic mice. Metabolism 2018; 85:161-170. [PMID: 29604362 PMCID: PMC6394855 DOI: 10.1016/j.metabol.2018.03.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2017] [Revised: 03/20/2018] [Accepted: 03/22/2018] [Indexed: 01/05/2023]
Abstract
OBJECTIVE Ketohexokinase (KHK), a primary enzyme in fructose metabolism, has two isoforms, namely, KHK-A and KHK-C. Previously, we reported that renal injury was reduced in streptozotocin-induced diabetic mice which lacked both isoforms. Although both isoforms express in kidney, it has not been elucidated whether each isoform plays distinct roles in the development of diabetic kidney disease (DKD). The aim of the study is to elucidate the role of KHK-A for DKD progression. MATERIALS AND METHODS Diabetes was induced by five consecutive daily intraperitoneal injections of streptozotocin (50 mg/kg) in C57BL/6J wild-type mice, mice lacking KHK-A alone (KHK-A KO), and mice lacking both KHK-A and KHK-C (KHK-A/C KO). At 35 weeks, renal injury, inflammation, hypoxia, and oxidative stress were examined. Metabolomic analysis including polyol pathway, fructose metabolism, glycolysis, TCA (tricarboxylic acid) cycle, and NAD (nicotinamide adenine dinucleotide) metabolism in kidney and urine was done. RESULTS Diabetic KHK-A KO mice developed severe renal injury compared to diabetic wild-type mice, and this was associated with further increases of intrarenal fructose, dihydroxyacetone phosphate (DHAP), TCA cycle intermediate levels, and severe inflammation. In contrast, renal injury was prevented in diabetic KHK-A/C KO mice compared to both wild-type and KHK-A KO diabetic mice. Further, diabetic KHK-A KO mice contained decreased renal NAD+ level with the increase of renal hypoxia-inducible factor 1-alpha expression despite having increased renal nicotinamide (NAM) level. CONCLUSION These results suggest that KHK-C might play a deleterious role in DKD progression through endogenous fructose metabolism, and that KHK-A plays a unique protective role against the development of DKD.
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Affiliation(s)
- Tomohito Doke
- Departments of Nephrology, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan; Departments of Biochemistry, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Takuji Ishimoto
- Departments of Nephrology, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan.
| | - Takahiro Hayasaki
- Departments of Nephrology, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Satsuki Ikeda
- Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata 997-0052, Japan
| | - Masako Hasebe
- Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata 997-0052, Japan
| | - Akiyoshi Hirayama
- Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata 997-0052, Japan
| | - Tomoyoshi Soga
- Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata 997-0052, Japan
| | - Noritoshi Kato
- Departments of Nephrology, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Tomoki Kosugi
- Departments of Nephrology, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Naotake Tsuboi
- Departments of Nephrology, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Miguel A Lanaspa
- Division of Renal Diseases and Hypertension, University of Colorado Denver, Aurora, CO 80045, USA
| | - Richard J Johnson
- Division of Renal Diseases and Hypertension, University of Colorado Denver, Aurora, CO 80045, USA
| | - Kenji Kadomatsu
- Departments of Biochemistry, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Shoichi Maruyama
- Departments of Nephrology, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
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27
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Miller KN, Burhans MS, Clark JP, Howell PR, Polewski MA, DeMuth TM, Eliceiri KW, Lindstrom MJ, Ntambi JM, Anderson RM. Aging and caloric restriction impact adipose tissue, adiponectin, and circulating lipids. Aging Cell 2017; 16:497-507. [PMID: 28156058 PMCID: PMC5418198 DOI: 10.1111/acel.12575] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/26/2016] [Indexed: 11/26/2022] Open
Abstract
Adipose tissue expansion has been associated with system-wide metabolic dysfunction and increased vulnerability to diabetes, cancer, and cardiovascular disease. A reduction in adiposity is a hallmark of caloric restriction (CR), an intervention that extends longevity and delays the onset of these same age-related conditions. Despite these parallels, the role of adipose tissue in coordinating the metabolism of aging is poorly defined. Here, we show that adipose tissue metabolism and secretory profiles change with age and are responsive to CR. We conducted a cross-sectional study of CR in adult, late-middle-aged, and advanced-aged mice. Adiposity and the relationship between adiposity and circulating levels of the adipose-derived peptide hormone adiponectin were age-sensitive. CR impacted adiposity but only levels of the high molecular weight isoform of adiponectin responded to CR. Activators of metabolism including PGC-1a, SIRT1, and NAMPT were differentially expressed with CR in adipose tissues. Although age had a significant impact on NAD metabolism, as detected by biochemical assay and multiphoton imaging, the impact of CR was subtle and related to differences in reliance on oxidative metabolism. The impact of age on circulating lipids was limited to composition of circulating phospholipids. In contrast, the impact of CR was detected in all lipid classes regardless of age, suggesting a profound difference in lipid metabolism. These data demonstrate that aspects of adipose tissue metabolism are life phase specific and that CR is associated with a distinct metabolic state, suggesting that adipose tissue signaling presents a suitable target for interventions to delay aging.
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Affiliation(s)
- Karl N. Miller
- Division of Geriatrics; Department of Medicine; SMPH; Madison WI 53706 USA
- Department of Nutritional Sciences; University of Wisconsin Madison; Madison WI 53706 USA
| | - Maggie S. Burhans
- Division of Geriatrics; Department of Medicine; SMPH; Madison WI 53706 USA
| | - Josef P. Clark
- Division of Geriatrics; Department of Medicine; SMPH; Madison WI 53706 USA
| | - Porsha R. Howell
- Division of Geriatrics; Department of Medicine; SMPH; Madison WI 53706 USA
| | | | - Tyler M. DeMuth
- Division of Geriatrics; Department of Medicine; SMPH; Madison WI 53706 USA
| | - Kevin W. Eliceiri
- Laboratory for Optical and Computational Instrumentation; University of Wisconsin Madison; Madison WI 53706 USA
| | - Mary J. Lindstrom
- Department of Biostatistics and Medical Informatics; University of Wisconsin; Madison WI 53705 USA
| | - James M. Ntambi
- Department of Nutritional Sciences; University of Wisconsin Madison; Madison WI 53706 USA
- Department of Biochemistry; University of Wisconsin; Madison WI 53706 USA
| | - Rozalyn M. Anderson
- Division of Geriatrics; Department of Medicine; SMPH; Madison WI 53706 USA
- Laboratory for Optical and Computational Instrumentation; University of Wisconsin Madison; Madison WI 53706 USA
- GRECC; William S. Middleton Memorial Veterans Hospital; Madison WI 53705 USA
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28
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Bathke J, Fritz-Wolf K, Brandstädter C, Burkhardt A, Jortzik E, Rahlfs S, Becker K. Structural and Functional Characterization of Plasmodium falciparum Nicotinic Acid Mononucleotide Adenylyltransferase. J Mol Biol 2016; 428:4946-4961. [PMID: 27984041 DOI: 10.1016/j.jmb.2016.10.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Revised: 10/19/2016] [Accepted: 10/24/2016] [Indexed: 11/24/2022]
Abstract
Nicotinic acid mononucleotide adenylyltransferase (NaMNAT) is an indispensable enzyme for the synthesis of NAD and NAD phosphate. It catalyzes the adenylylation of nicotinic acid mononucleotide (NaMN) to yield nicotinic acid adenine dinucleotide (NaAD). Since NAD(H) and NAD phosphate(H) are essentially involved in metabolic and redox regulatory reactions, NaMNAT is an attractive drug target in the fight against bacterial and parasitic infections. Notably, NaMNAT of the malaria parasite Plasmodium falciparum possesses only 20% sequence identity with the homologous human enzyme. Here, we present for the first time the two X-ray structures of P. falciparum NaMNAT (PfNaMNAT)-in the product-bound state with NaAD and complexed with an α,β-non-hydrolizable ATP analog-the structures were determined to a resolution of 2.2Å and 2.5Å, respectively. The overall architecture of PfNaMNAT was found to be more similar to its bacterial homologs than its human counterparts although the PPHK motif conserved in bacteria is missing. Furthermore, PfNaMNAT possesses two cysteine residues within the active site that have not been described for any other NaMNATase so far and are likely to be involved in redox regulation of PfNaMNAT activity. Enzymatic studies and surface plasmon resonance data reveal that PfNaMNAT is capable of utilizing NaMN and nicotinamide mononucleotide with a slight preference for NaMN. Surprisingly, a comparison with the active site of Escherichia coli NaMNAT showed very similar architectures, despite different substrate preferences.
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Affiliation(s)
- Jochen Bathke
- Biochemistry and Molecular Biology, Interdisciplinary Research Center, Justus Liebig University, D-35392 Giessen, Germany
| | - Karin Fritz-Wolf
- Biochemistry and Molecular Biology, Interdisciplinary Research Center, Justus Liebig University, D-35392 Giessen, Germany; Max-Planck Institute for Medical Research, Jahnstrasse 29, D-69120 Heidelberg, Germany
| | - Christina Brandstädter
- Biochemistry and Molecular Biology, Interdisciplinary Research Center, Justus Liebig University, D-35392 Giessen, Germany
| | - Anja Burkhardt
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - Esther Jortzik
- Biochemistry and Molecular Biology, Interdisciplinary Research Center, Justus Liebig University, D-35392 Giessen, Germany
| | - Stefan Rahlfs
- Biochemistry and Molecular Biology, Interdisciplinary Research Center, Justus Liebig University, D-35392 Giessen, Germany
| | - Katja Becker
- Biochemistry and Molecular Biology, Interdisciplinary Research Center, Justus Liebig University, D-35392 Giessen, Germany.
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29
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Chen H, Wang S, Zhang H, Nice EC, Huang C. Nicotinamide phosphoribosyltransferase (Nampt) in carcinogenesis: new clinical opportunities. Expert Rev Anticancer Ther 2016; 16:827-38. [PMID: 27186719 DOI: 10.1080/14737140.2016.1190649] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
INTRODUCTION Nicotinamide phosphoribosyltransferase (Nampt) is the rate-limiting enzyme that catalyzes the first step in the mammalian nicotinamide adenine dinucleotide (NAD) salvage pathway. Aberrant NAD metabolism was associated with oncogenic signal transduction, suggesting the critical roles of Nampt in tumorigenesis and metastasis. Additionally, Nampt can be secreted out of the cell, and this extracellular form of Nampt (eNampt) was shown to induce inflammation and angiogenesis due to its cytokine activity, which may also be involved in carcinogenesis. AREAS COVERED This article reviews recent advances in the studies of Nampt in carcinogenesis, with a special highlight on Nampt inhibitors and future clinical application, including cancer diagnosis, prognosis and therapy. Expert commentary: Nampt not only maintains the balance of cellular metabolism, but also has a profound influence on multiple aspects of carcinogenesis. Therefore, elucidation of these mechanisms opens the door for future clinical applications targeting this protein. Additional studies are needed to address important questions including the relationship between extracellular Nampt and carcinogenesis.
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Affiliation(s)
- Hang Chen
- a Key Laboratory of Tropical Diseases and Translational Medicine of Ministry of Education & Department of Neurology , The Affiliated Hospital of Hainan Medical College , Haikou , China
| | - Shiyu Wang
- a Key Laboratory of Tropical Diseases and Translational Medicine of Ministry of Education & Department of Neurology , The Affiliated Hospital of Hainan Medical College , Haikou , China
| | - Haiyuan Zhang
- a Key Laboratory of Tropical Diseases and Translational Medicine of Ministry of Education & Department of Neurology , The Affiliated Hospital of Hainan Medical College , Haikou , China
| | - Edouard C Nice
- b Department of Biochemistry and Molecular Biology , Monash University , Clayton , Australia
| | - Canhua Huang
- c State Key Laboratory for Biotherapy and Cancer Center, West China Hospital , Sichuan University, and Collaborative Innovation Center of Biotherapy , Chengdu , China
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30
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Forero-Baena N, Sánchez-Lancheros D, Buitrago JC, Bustos V, Ramírez-Hernández MH. Identification of a nicotinamide/nicotinate mononucleotide adenylyltransferase in Giardia lamblia (GlNMNAT). Biochim Open 2015; 1:61-69. [PMID: 29632831 PMCID: PMC5889475 DOI: 10.1016/j.biopen.2015.11.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Revised: 10/18/2015] [Indexed: 01/19/2023]
Abstract
Giardia lamblia is an intestinal protozoan parasite that causes giardiasis, a disease of high prevalence in Latin America, Asia and Africa. Giardiasis leads to poor absorption of nutrients, severe electrolyte loss and growth retardation. In addition to its clinical importance, this parasite is of special biological interest due to its basal evolutionary position and simplified metabolism, which has not been studied thoroughly. One of the most important and conserved metabolic pathways is the biosynthesis of nicotinamide adenine dinucleotide (NAD). This molecule is widely known as a coenzyme in multiple redox reactions and as a substrate in cellular processes such as synthesis of Ca2+ mobilizing agents, DNA repair and gene expression regulation. There are two pathways for NAD biosynthesis, which converge at the step catalyzed by nicotinamide/nicotinate mononucleotide adenylyltransferase (NMNAT, EC 2.7.7.1/18). Using bioinformatics tools, we found two NMNAT sequences in Giardia lamblia (glnmnat-a and glnmnat-b). We first verified the identity of the sequences in silico. Subsequently, glnmnat-a was cloned into an expression vector. The recombinant protein (His-GlNMNAT) was purified by nickel-affinity binding and was used in direct in vitro enzyme assays assessed by C18-HPLC, verifying adenylyltransferase activity with both nicotinamide (NMN) and nicotinic acid (NAMN) mononucleotides. Optimal reaction pH and temperature were 7.3 and 26 °C. Michaelis-Menten kinetics were observed for NMN and ATP, but saturation was not accomplished with NAMN, implying low affinity yet detectable activity with this substrate. Double-reciprocal plots showed no cooperativity for this enzyme. This represents an advance in the study of NAD metabolism in Giardia spp.
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Key Words
- Enzyme activity
- Giardia lamblia
- NA, nicotinic acid
- NAAD, nicotinic acid adenine dinucleotide
- NAD metabolism
- NAD synthetase, EC. 6.3.5.1
- NAD, nicotinamide adenine dinucleotide
- NAM, nicotinamide
- NAMN, nicotinic acid mononucleotide
- NAMPRT, nicotinamide phosphoribosyltransferase
- NAPRT, nicotinic acid phosphoribosyltransferase
- NMN, nicotinamide mononucleotide
- NMNAT
- NMNAT, nicotinamide/nicotinic acid mononucleotide adenylyltransferase
- NR, nicotinamide riboside
- NRK, nicotinamide riboside kinase
- QA, quinolinic acid
- QAPRT, quinolinic acid phosphoribosyltransferase
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Affiliation(s)
- Nicolás Forero-Baena
- Department of Chemistry, Universidad Nacional de Colombia, Bogotá Cundinamarca, Colombia
| | | | | | - Victor Bustos
- Department of Chemistry, Universidad Nacional de Colombia, Bogotá Cundinamarca, Colombia
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Gossmann TI, Ziegler M. Sequence divergence and diversity suggests ongoing functional diversification of vertebrate NAD metabolism. DNA Repair (Amst) 2014; 23:39-48. [PMID: 25084685 PMCID: PMC4248024 DOI: 10.1016/j.dnarep.2014.07.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Revised: 05/22/2014] [Accepted: 07/09/2014] [Indexed: 12/04/2022]
Abstract
NAD is not only an important cofactor in redox reactions but has also received attention in recent years because of its physiological importance in metabolic regulation, DNA repair and signaling. In contrast to the redox reactions, these regulatory processes involve degradation of NAD and therefore necessitate a constant replenishment of its cellular pool. NAD biosynthetic enzymes are common to almost all species in all clades, but the number of NAD degrading enzymes varies substantially across taxa. In particular, vertebrates, including humans, have a manifold of NAD degrading enzymes which require a high turnover of NAD. As there is currently a lack of a systematic study of how natural selection has shaped enzymes involved in NAD metabolism we conducted a comprehensive evolutionary analysis based on intraspecific variation and interspecific divergence. We compare NAD biosynthetic and degrading enzymes in four eukaryotic model species and subsequently focus on human NAD metabolic enzymes and their orthologs in other vertebrates. We find that the majority of enzymes involved in NAD metabolism are subject to varying levels of purifying selection. While NAD biosynthetic enzymes appear to experience a rather high level of evolutionary constraint, there is evidence for positive selection among enzymes mediating NAD-dependent signaling. This is particularly evident for members of the PARP family, a diverse protein family involved in DNA damage repair and programmed cell death. Based on haplotype information and substitution rate analysis we pinpoint sites that are potential targets of positive selection. We also link our findings to a three dimensional structure, which suggests that positive selection occurs in domains responsible for DNA binding and polymerization rather than the NAD catalytic domain. Taken together, our results indicate that vertebrate NAD metabolism is still undergoing functional diversification.
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Affiliation(s)
- Toni I Gossmann
- Department of Animal and Plant Sciences, University of Sheffield, Alfred Denny Building, S10 2TN Sheffield, United Kingdom.
| | - Mathias Ziegler
- Department of Molecular Biology, University of Bergen, Postbox 7803, 5020 Bergen, Norway
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Kim JS, Yoon CS, Park DR. NAMPT regulates mitochondria biogenesis via NAD metabolism and calcium binding proteins during skeletal muscle contraction. J Exerc Nutrition Biochem 2014; 18:259-66. [PMID: 25566462 PMCID: PMC4241898 DOI: 10.5717/jenb.2014.18.3.259] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Revised: 09/04/2014] [Accepted: 09/11/2014] [Indexed: 01/10/2023] Open
Abstract
PURPOSE The purpose of this study was to investigate the effect that muscle contraction induced NAD metabolism via NAMPT has on mitochondrial biogenesis. METHODS Primary skeletal muscle cells were isolated from the gastrocnemius in C57BL/6 mice. The muscle cells were stimulated by electrical current at 1Hz for 3 minutes in conditions of normal or NAD metabolism related inhibitor treatment. NAD/NADH level, Sirt1 and mitochondria biogenesis related signal factor's changes were examined in normal or NAD metabolism related inhibitor treated cells. RESULTS Electrical stimulation (ES) induced muscle contractions significantly increased NAD/NADH levels, NAMPT inhibitor FK-866 inhibited ES-induced NAD formation, which caused SIRT1 expression and PGC-1α deacetylation to decrease. Moreover, NAMPT inhibition decreased mitochondrial biogenesis related mRNA, COX-1 and Tfam levels. Along with AMPK inhibitor, compound C decreases SIRT1 expression, PGC-1α deacetylation and muscle contraction induced mitochondrial biogenesis related mRNA increment. These results indicated that the AMPK-NAMPT signal is a key player for muscle contraction induced SIRT1 expression and PGC-1α deacetylation, which influences mitochondrial biogenesis. Inhibition of the AMPK upregulator, Camkkβ, STO-609 decreased AMPK phosphorylation and SIRT1 expression but did not decrease PGC-1α deacetylation. However, CAMKII inhibition via AIP decreased PGC-1α deacetylation. CONCLUSION In conclusion, the results indicate that NAMPT plays an important role in NAD metabolism and mitochondrial biogenesis. However, mitochondrial biogenesis is also controlled by different calcium binding protein signals including Camkkβ and CAMKII. [Keyword] Muscle contraction, NAD metabolism, SIRT1, PGC-1 α, mitochondria biogenesis.
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Affiliation(s)
- Jeong Seok Kim
- Department of physical education, Chonbuk National University, Jeonju, Korea
| | - Chung-Su Yoon
- Department of physical education, Chonbuk National University, Jeonju, Korea
| | - Dae Ryoung Park
- Department of Biochemistry, Chonbuk National University Medical school, Jeonju, Korea
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Skoge RH, Dölle C, Ziegler M. Regulation of SIRT2-dependent α-tubulin deacetylation by cellular NAD levels. DNA Repair (Amst) 2014; 23:33-8. [PMID: 24814981 DOI: 10.1016/j.dnarep.2014.04.011] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Revised: 03/24/2014] [Accepted: 04/13/2014] [Indexed: 10/25/2022]
Abstract
Acetylation of α-tubulin on lysine 40 is one of the major posttranslational modifications of microtubules. The acetylation reaction is catalyzed by alpha-tubulin N-acetyltransferase and the modification can be reversed by either the NAD-independent class II histone deacetylase HDAC6 or the NAD-dependent deacetylase SIRT2. In this study, we assessed to what extent cellular NAD levels are involved in the regulation of the α-tubulin acetylation state. Cells were subjected to different treatments known to influence cellular NAD content. In response to NAD depletion caused by inhibition of NAD synthesis from nicotinamide, α-tubulin was hyperacetylated. Under these conditions, the normal tubulin acetylation state could be restored by providing the cells with alternative NAD precursors. Likewise, decreasing the rate of endogenous NAD consumption using an inhibitor of poly-ADP-ribosylation also stabilized the acetylation of α-tubulin. Conversely, the level of acetylated α-tubulin decreased when NAD synthesis was enhanced by overexpression of an NAD biosynthetic enzyme. Combined, these results show that the tubulin acetylation status is reciprocally regulated by cellular NAD levels. Furthermore, we provide evidence confirming that the NAD-dependent regulation of tubulin acetylation is mediated by SIRT2.
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Affiliation(s)
- Renate Hvidsten Skoge
- Department of Molecular Biology, University of Bergen, Postbox 7803, 5020 Bergen, Norway
| | - Christian Dölle
- Department of Molecular Biology, University of Bergen, Postbox 7803, 5020 Bergen, Norway
| | - Mathias Ziegler
- Department of Molecular Biology, University of Bergen, Postbox 7803, 5020 Bergen, Norway.
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Abstract
Cancer progression is accompanied by widespread transcriptional changes and metabolic alterations. While it is widely accepted that the origin of cancer can be traced to the mutations that accumulate over time, relatively recent evidence favors a similarly fundamental role for alterations in the epigenome during tumorigenesis. Changes in epigenetics that arise from post-translational modifications of histones and DNA are exploited by cancer cells to upregulate and/or downregulate the expression levels of oncogenes and tumor suppressors, respectively. Although the mechanisms behind these modifications, in particular how they lead to gene silencing and activation, are still being understood, most of the enzymatic machinery of epigenetics require metabolites as substrates or cofactors. As a result, their activities can be influenced by the metabolic state of the cell. The purpose of this review is to give an overview of cancer epigenetics and metabolism and provide examples of where they converge.
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Affiliation(s)
- Jihye Yun
- Department of Systems Biology, Harvard Medical School Boston, MA, USA
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