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Serrano J, Boyd J, Brown IS, Mason C, Smith KR, Karolyi K, Maurya SK, Meshram NN, Serna V, Link GM, Gardell SJ, Kyriazis GA. The TAS1R2 G-protein-coupled receptor is an ambient glucose sensor in skeletal muscle that regulates NAD homeostasis and mitochondrial capacity. Nat Commun 2024; 15:4915. [PMID: 38851747 PMCID: PMC11162498 DOI: 10.1038/s41467-024-49100-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 05/21/2024] [Indexed: 06/10/2024] Open
Abstract
The bioavailability of nicotinamide adenine dinucleotide (NAD) is vital for skeletal muscle health, yet the mechanisms or signals regulating NAD homeostasis remain unclear. Here, we uncover a pathway connecting peripheral glucose sensing to the modulation of muscle NAD through TAS1R2, the sugar-sensing G protein-coupled receptor (GPCR) initially identified in taste perception. Muscle TAS1R2 receptor stimulation by glucose and other agonists induces ERK1/2-dependent phosphorylation and activation of poly(ADP-ribose) polymerase1 (PARP1), a major NAD consumer in skeletal muscle. Consequently, muscle-specific deletion of TAS1R2 (mKO) in male mice suppresses PARP1 activity, elevating NAD levels and enhancing mitochondrial capacity and running endurance. Plasma glucose levels negatively correlate with muscle NAD, and TAS1R2 receptor deficiency enhances NAD responses across the glycemic range, implicating TAS1R2 as a peripheral energy surveyor. These findings underscore the role of GPCR signaling in NAD regulation and propose TAS1R2 as a potential therapeutic target for maintaining muscle health.
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Affiliation(s)
- Joan Serrano
- Biological Chemistry & Pharmacology, College of Medicine, The Ohio State University; Columbus, Columbus, 43210, USA
| | - Jordan Boyd
- Biological Chemistry & Pharmacology, College of Medicine, The Ohio State University; Columbus, Columbus, 43210, USA
| | - Ian S Brown
- Biological Chemistry & Pharmacology, College of Medicine, The Ohio State University; Columbus, Columbus, 43210, USA
| | - Carter Mason
- Biological Chemistry & Pharmacology, College of Medicine, The Ohio State University; Columbus, Columbus, 43210, USA
| | - Kathleen R Smith
- Biological Chemistry & Pharmacology, College of Medicine, The Ohio State University; Columbus, Columbus, 43210, USA
| | - Katalin Karolyi
- Biological Chemistry & Pharmacology, College of Medicine, The Ohio State University; Columbus, Columbus, 43210, USA
| | - Santosh K Maurya
- Physiology and Cell Biology, College of Medicine, The Ohio State University; Columbus, Columbus, 43210, USA
| | - Nishita N Meshram
- Biological Chemistry & Pharmacology, College of Medicine, The Ohio State University; Columbus, Columbus, 43210, USA
| | - Vanida Serna
- Biological Chemistry & Pharmacology, College of Medicine, The Ohio State University; Columbus, Columbus, 43210, USA
| | - Grace M Link
- Biological Chemistry & Pharmacology, College of Medicine, The Ohio State University; Columbus, Columbus, 43210, USA
| | - Stephen J Gardell
- Translational Research Institute, Advent Health, Orlando, 32804, USA
| | - George A Kyriazis
- Biological Chemistry & Pharmacology, College of Medicine, The Ohio State University; Columbus, Columbus, 43210, USA.
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2
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Velma G, Krider IS, Alves ETM, Courey JM, Laham MS, Thatcher GRJ. Channeling Nicotinamide Phosphoribosyltransferase (NAMPT) to Address Life and Death. J Med Chem 2024; 67:5999-6026. [PMID: 38580317 PMCID: PMC11056997 DOI: 10.1021/acs.jmedchem.3c02112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 02/22/2024] [Accepted: 03/11/2024] [Indexed: 04/07/2024]
Abstract
Nicotinamide phosphoribosyltransferase (NAMPT) catalyzes the rate-limiting step in NAD+ biosynthesis via salvage of NAM formed from catabolism of NAD+ by proteins with NADase activity (e.g., PARPs, SIRTs, CD38). Depletion of NAD+ in aging, neurodegeneration, and metabolic disorders is addressed by NAD+ supplementation. Conversely, NAMPT inhibitors have been developed for cancer therapy: many discovered by phenotypic screening for cancer cell death have low nanomolar potency in cellular models. No NAMPT inhibitor is yet FDA-approved. The ability of inhibitors to act as NAMPT substrates may be associated with efficacy and toxicity. Some 3-pyridyl inhibitors become 4-pyridyl activators or "NAD+ boosters". NAMPT positive allosteric modulators (N-PAMs) and boosters may increase enzyme activity by relieving substrate/product inhibition. Binding to a "rear channel" extending from the NAMPT active site is key for inhibitors, boosters, and N-PAMs. A deeper understanding may fulfill the potential of NAMPT ligands to regulate cellular life and death.
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Affiliation(s)
- Ganga
Reddy Velma
- Department
of Pharmacology & Toxicology, R. Ken Coit College of Pharmacy, University of Arizona, Tucson, Arizona 85721, United States
| | - Isabella S. Krider
- Department
of Chemistry & Biochemistry, University
of Arizona, Tucson, Arizona 85721, United States
| | - Erick T. M. Alves
- Department
of Pharmacology & Toxicology, R. Ken Coit College of Pharmacy, University of Arizona, Tucson, Arizona 85721, United States
| | - Jenna M. Courey
- Department
of Chemistry & Biochemistry, University
of Arizona, Tucson, Arizona 85721, United States
| | - Megan S. Laham
- Department
of Chemistry & Biochemistry, University
of Arizona, Tucson, Arizona 85721, United States
| | - Gregory R. J. Thatcher
- Department
of Pharmacology & Toxicology, R. Ken Coit College of Pharmacy, University of Arizona, Tucson, Arizona 85721, United States
- Department
of Chemistry & Biochemistry, University
of Arizona, Tucson, Arizona 85721, United States
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3
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Schellino R, Boido M, Vrijbloed JW, Fariello RG, Vercelli A. Synergistically Acting on Myostatin and Agrin Pathways Increases Neuromuscular Junction Stability and Endurance in Old Mice. Aging Dis 2024; 15:893-910. [PMID: 37548943 PMCID: PMC10917542 DOI: 10.14336/ad.2023.0713-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Accepted: 07/13/2023] [Indexed: 08/08/2023] Open
Abstract
Sarcopenia is the primary cause of impaired motor performance in the elderly. The current prevailing approach to counteract such condition is increasing the muscle mass through inhibition of the myostatin system: however, this strategy only moderately improves muscular strength, not being able to sustain the innervation of the hypertrophic muscle per se, leading to a progressive worsening of motor performances. Thus, we proposed the administration of ActR-Fc-nLG3, a protein that combines the soluble activin receptor, a strong myostatin inhibitor, with the C-terminal agrin nLG3 domain. This compound has the potential of reinforcing neuro-muscular stability to the hypertrophic muscle. We previously demonstrated an enhancement of motor endurance and ACh receptor aggregation in young mice after ActR-Fc-nLG3 administration. Now we extended these observations by demonstrating that also in aged (2 years-old) mice, long-term administration of ActR-Fc-nLG3 increases in a sustained way both motor endurance and muscle strength, compared with ActR-Fc, a myostatin inhibitor, alone. Histological data demonstrate that the administration of this biological improves neuromuscular stability and fiber innervation maintenance, preventing muscle fiber atrophy and inducing only moderate hypertrophy. Moreover, at the postsynaptic site we observe an increased folding in the soleplate, a likely anatomical substrate for improved neurotransmission efficiency in the NMJ, that may lead to enhanced motor endurance. We suggest that ActR-Fc-nLG3 may become a valid option for treating sarcopenia and possibly other disorders of striatal muscles.
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Affiliation(s)
- Roberta Schellino
- Department of Neuroscience Rita Levi-Montalcini, University of Turin, Turin 10126, Italy
- Neuroscience Institute Cavalieri Ottolenghi, University of Turin, Orbassano, 10043 Italy
| | - Marina Boido
- Department of Neuroscience Rita Levi-Montalcini, University of Turin, Turin 10126, Italy
- Neuroscience Institute Cavalieri Ottolenghi, University of Turin, Orbassano, 10043 Italy
| | | | | | - Alessandro Vercelli
- Department of Neuroscience Rita Levi-Montalcini, University of Turin, Turin 10126, Italy
- Neuroscience Institute Cavalieri Ottolenghi, University of Turin, Orbassano, 10043 Italy
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4
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Nakanishi R, Hashimoto N, Takuwa M, Xing J, Uemura M, un Nisa B, Tanaka M, Hirabayashi T, Tanaka M, Fujino H. High Concentrations of Nucleotides Prevent Capillary Regression during Hindlimb Unloading by Inhibiting Oxidative Stress and Enhancing Mitochondrial Metabolism of Soleus Muscles in Rats. Acta Histochem Cytochem 2023; 56:95-104. [PMID: 38318105 PMCID: PMC10838627 DOI: 10.1267/ahc.23-00029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Accepted: 10/09/2023] [Indexed: 02/07/2024] Open
Abstract
Prolonged inactivity in skeletal muscles decreases muscle capillary development because of an imbalance between pro- and antiangiogenic signals, mitochondrial metabolism disorders, and increased oxidative stress. Nucleotides have been shown to exert a dose-dependent effect on disuse-induced muscle atrophy. However, the dose-dependent effect on capillary regression in disused muscles remains unclear. Therefore, this study investigated the dose-dependent effect of nucleotides on capillary regression due to disuse. For this purpose, Wistar rats were divided into five groups as follows: control rats fed nucleotide-free diets (CON), hindlimb-unloaded rats fed nucleotide-free diets (HU), and hindlimb-unloaded rats fed 1.0%, 2.5%, and 5.0% nucleotide diets, (HU + 1.0% NT), (HU + 2.5% NT), and (HU + 5.0% NT), respectively. Unloading increased reactive oxygen species (ROS) production and decreased mitochondrial enzyme activity, thereby decreasing the number of muscle capillaries. In contrast, 5.0% nucleotide-containing diet prevented increases in ROS production and reductions in the expression levels of NAMPT, PGC-1α, and CPT-1b proteins. Moreover, 5.0% nucleotide-containing diet prevented mitochondrial enzyme activity (such as citrate synthase and beta-hydroxy acyl-CoA dehydrogenase activity) via NAMPT or following PGC-1α upregulation, thereby preventing capillary regression. Therefore, 5.0% nucleotide-containing diet is likely to prevent capillary regression by decreasing oxidative stress and increasing mitochondrial metabolism.
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Affiliation(s)
- Ryosuke Nakanishi
- Department of Rehabilitation Science, Kobe University Graduate School of Health Sciences, 7–10–2, Tomogaoka, Suma-ku, Kobe, Hyogo, 654–0142, Japan
- Department of Physical Therapy, Kobe International University, 9–1–6, Koyocho-naka, Higashinada-ku, Kobe, Hyogo 658–0032, Japan
| | - Nagisa Hashimoto
- Department of Rehabilitation Science, Kobe University Graduate School of Health Sciences, 7–10–2, Tomogaoka, Suma-ku, Kobe, Hyogo, 654–0142, Japan
| | - Miho Takuwa
- Department of Rehabilitation Science, Kobe University Graduate School of Health Sciences, 7–10–2, Tomogaoka, Suma-ku, Kobe, Hyogo, 654–0142, Japan
| | - Jihao Xing
- Department of Rehabilitation Science, Kobe University Graduate School of Health Sciences, 7–10–2, Tomogaoka, Suma-ku, Kobe, Hyogo, 654–0142, Japan
| | - Mikiko Uemura
- Department of Rehabilitation Science, Kobe University Graduate School of Health Sciences, 7–10–2, Tomogaoka, Suma-ku, Kobe, Hyogo, 654–0142, Japan
- Department of Physical Therapy, Kansai University of Welfare Sciences, 3–11–1, Asahigaoka, Kashihara, Osaka, 582–0026, Japan
| | - Badur un Nisa
- Department of Rehabilitation Science, Kobe University Graduate School of Health Sciences, 7–10–2, Tomogaoka, Suma-ku, Kobe, Hyogo, 654–0142, Japan
| | - Masayuki Tanaka
- Department of Rehabilitation Science, Kobe University Graduate School of Health Sciences, 7–10–2, Tomogaoka, Suma-ku, Kobe, Hyogo, 654–0142, Japan
- Department of Physical Therapy, Okayama Healthcare Professional University, 3-2-18, Daiku Kita-ku, Okayama, Okayama, 700-0913, Japan
| | - Takumi Hirabayashi
- Department of Rehabilitation Science, Kobe University Graduate School of Health Sciences, 7–10–2, Tomogaoka, Suma-ku, Kobe, Hyogo, 654–0142, Japan
| | - Minoru Tanaka
- Department of Rehabilitation Science, Kobe University Graduate School of Health Sciences, 7–10–2, Tomogaoka, Suma-ku, Kobe, Hyogo, 654–0142, Japan
- Department of Rehabilitation, Osaka Health Science University, 1-9-27, Tenma Kita-ku, Osaka, 530-0043, Japan
| | - Hidemi Fujino
- Department of Rehabilitation Science, Kobe University Graduate School of Health Sciences, 7–10–2, Tomogaoka, Suma-ku, Kobe, Hyogo, 654–0142, Japan
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Zhang X, Liu N, Yang F, Su G, Hu J, Chen R, Zheng Z. Exploration of the minimal clinically important difference value of the 3-min simulated pedal motion in patients with chronic obstructive pulmonary disease: A self-controlled prospective clinical trial. THE CLINICAL RESPIRATORY JOURNAL 2023; 17:951-961. [PMID: 37586707 PMCID: PMC10500321 DOI: 10.1111/crj.13687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Revised: 05/30/2023] [Accepted: 08/03/2023] [Indexed: 08/18/2023]
Abstract
BACKGROUND To help elderly patients with severe or very severe chronic obstructive pulmonary disease (COPD) with pulmonary rehabilitation, we have developed Zheng's supine rehabilitation exercise (ZSRE). Currently, none of the terminal or critically ill patients with severe exercise limitation can complete the 6-min walking distance (6MWD) and cardiopulmonary exercise testing (CPET). METHODS In this study, we discuss the definition of the standardized 3-min simulated pedal motion (3MSPM) test and its operational specifications. Also, we evaluate the minimal clinically important difference (MCID) value of the 3MSPM. RESULTS The results showed that the mMRC score of COPD patients with acute exacerbation of dyspnea was progressively reduced from the second day of respiratory rehabilitation, and the difference between the first and seventh days was statistically significant (p < 0.000, χ2 = 176.664). 6MWD increased progressively, and the difference between 6MWD on day 1-7 was statistically significant (p = 0.024, F = 2.443). The difference between 3MSPM on day 1-7 was also statistically significant (p < 0.000, F = 4.481). Further analysis showed that 6MWD was negatively correlated with mMRC (p < 0.000, OR = -0.524). 3MSPM was positively correlated with 6MWD (p < 0.000, OR = 0.640) but negatively correlated with mMRC (p < 0.000, OR = -0.413). There is a linear regression relationship between 6MWD and 3MSPM, that is, 6MWD = 14.151 + 0.301 * 3MSPM, adjusted R2 = 0.401. CONCLUSION Based on the regression equation, 3MSPM can predict 6MWD, and it can be used as a simple exercise endurance method to evaluate patients with safety hazards in underground activities or who cannot complete the 6MWD test. The minimum clinically important difference value is increased by 23.
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Affiliation(s)
- Xiaoting Zhang
- Zhengzhou Central Hospital Affiliated to Zhengzhou UniversityZhengzhouHenanChina
| | - Ni Liu
- State Key Laboraory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory HealthThe First Affiliated Hospital of Guangzhou Medical UniversityGuangzhouGuangdongChina
| | - Feng Yang
- State Key Laboraory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory HealthThe First Affiliated Hospital of Guangzhou Medical UniversityGuangzhouGuangdongChina
| | - Guansheng Su
- State Key Laboraory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory HealthThe First Affiliated Hospital of Guangzhou Medical UniversityGuangzhouGuangdongChina
| | - Jieying Hu
- State Key Laboraory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory HealthThe First Affiliated Hospital of Guangzhou Medical UniversityGuangzhouGuangdongChina
| | - Rongchang Chen
- Shenzhen Institute of Respiratory DiseasesShenzhen CityGuangdong provinceChina
| | - Zeguang Zheng
- State Key Laboraory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory HealthThe First Affiliated Hospital of Guangzhou Medical UniversityGuangzhouGuangdongChina
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6
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Henriquez-Olguin C, Meneses-Valdes R, Raun SH, Gallero S, Knudsen JR, Li Z, Li J, Sylow L, Jaimovich E, Jensen TE. NOX2 deficiency exacerbates diet-induced obesity and impairs molecular training adaptations in skeletal muscle. Redox Biol 2023; 65:102842. [PMID: 37572454 PMCID: PMC10440567 DOI: 10.1016/j.redox.2023.102842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 08/05/2023] [Indexed: 08/14/2023] Open
Abstract
The production of reactive oxygen species (ROS) by NADPH oxidase (NOX) 2 has been linked to both insulin resistance and exercise training adaptations in skeletal muscle. This study explores the previously unexamined role of NOX2 in the interplay between diet-induced insulin resistance and exercise training (ET). Using a mouse model that harbors a point mutation in the essential NOX2 regulatory subunit, p47phox (Ncf1*), we investigated the impact of this mutation on various metabolic adaptations. Wild-type (WT) and Ncf1* mice were assigned to three groups: chow diet, 60% energy fat diet (HFD), and HFD with access to running wheels (HFD + E). After a 16-week intervention, a comprehensive phenotypic assessment was performed, including body composition, glucose tolerance, energy intake, muscle insulin signaling, redox-related proteins, and mitochondrial adaptations. The results revealed that NOX2 deficiency exacerbated the impact of HFD on body weight, body composition, and glucose intolerance. Moreover, in Ncf1* mice, ET did not improve glucose tolerance or increase muscle cross-sectional area. ET normalized body fat independently of genotype. The lack of NOX2 activity during ET reduced several metabolic adaptations in skeletal muscle, including insulin signaling and expression of Hexokinase II and oxidative phosphorylation complexes. In conclusion, these findings suggest that NOX2 mediates key beneficial effects of exercise training in the context of diet-induced obesity.
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Affiliation(s)
- Carlos Henriquez-Olguin
- The August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise, and Sports, University of Copenhagen, August Krogh Building, Universitetsparken 13, 2100, Copenhagen, Denmark; Exercise Science Laboratory, Faculty of Medicine, Universidad Finis Terrae, Av. Pedro de Valdivia 1509, Santiago, Chile.
| | - Roberto Meneses-Valdes
- The August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise, and Sports, University of Copenhagen, August Krogh Building, Universitetsparken 13, 2100, Copenhagen, Denmark; Center for Exercise, Metabolism and Cancer, ICBM, Universidad de Chile, 8380453, Santiago, Chile
| | - Steffen H Raun
- The August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise, and Sports, University of Copenhagen, August Krogh Building, Universitetsparken 13, 2100, Copenhagen, Denmark; Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 3 Blegdamsvej, Copenhagen N, Denmark
| | - Samantha Gallero
- The August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise, and Sports, University of Copenhagen, August Krogh Building, Universitetsparken 13, 2100, Copenhagen, Denmark
| | - Jonas R Knudsen
- The August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise, and Sports, University of Copenhagen, August Krogh Building, Universitetsparken 13, 2100, Copenhagen, Denmark
| | - Zhencheng Li
- College of Physical Education, Chongqing University, Chongqing, 400044, CN, China
| | - Jingwen Li
- School of Medicine and Nursing, Huzhou University, Huzhou, 313000, CN, China
| | - Lykke Sylow
- The August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise, and Sports, University of Copenhagen, August Krogh Building, Universitetsparken 13, 2100, Copenhagen, Denmark; Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 3 Blegdamsvej, Copenhagen N, Denmark
| | - Enrique Jaimovich
- Center for Exercise, Metabolism and Cancer, ICBM, Universidad de Chile, 8380453, Santiago, Chile
| | - Thomas E Jensen
- The August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise, and Sports, University of Copenhagen, August Krogh Building, Universitetsparken 13, 2100, Copenhagen, Denmark.
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7
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Dent JR, Stocks B, Campelj DG, Philp A. Transient changes to metabolic homeostasis initiate mitochondrial adaptation to endurance exercise. Semin Cell Dev Biol 2023; 143:3-16. [PMID: 35351374 DOI: 10.1016/j.semcdb.2022.03.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Revised: 01/26/2022] [Accepted: 03/19/2022] [Indexed: 12/14/2022]
Abstract
Endurance exercise is well established to increase mitochondrial content and function in skeletal muscle, a process termed mitochondrial biogenesis. Current understanding is that exercise initiates skeletal muscle mitochondrial remodeling via modulation of cellular nutrient, energetic and contractile stress pathways. These subtle changes in the cellular milieu are sensed by numerous transduction pathways that serve to initiate and coordinate an increase in mitochondrial gene transcription and translation. The result of these acute signaling events is the promotion of growth and assembly of mitochondria, coupled to a greater capacity for aerobic ATP provision in skeletal muscle. The aim of this review is to highlight the acute metabolic events induced by endurance exercise and the subsequent molecular pathways that sense this transient change in cellular homeostasis to drive mitochondrial adaptation and remodeling.
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Affiliation(s)
- Jessica R Dent
- Department of Surgery, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
| | - Ben Stocks
- Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, Blegdamsvej 3B, DK-2200 Copenhagen, Denmark
| | - Dean G Campelj
- Mitochondrial Metabolism and Ageing Laboratory, Healthy Ageing Research Theme, Garvan Institute of Medical Research, Sydney, Australia
| | - Andrew Philp
- Mitochondrial Metabolism and Ageing Laboratory, Healthy Ageing Research Theme, Garvan Institute of Medical Research, Sydney, Australia; St Vincent's Medical School, UNSW Sydney, Sydney, Australia.
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8
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Chubanava S, Treebak JT. Regular exercise effectively protects against the aging-associated decline in skeletal muscle NAD content. Exp Gerontol 2023; 173:112109. [PMID: 36708750 DOI: 10.1016/j.exger.2023.112109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 12/15/2022] [Accepted: 01/24/2023] [Indexed: 01/27/2023]
Abstract
Skeletal muscle is a tissue integral to general health. Due to its high abundance and oxidative capacity, its metabolism is intimately linked to whole-body physiology. In the elderly population, mobility correlates positively with life expectancy and survival. Furthermore, regular physical activity is one of the most effective health-promoting interventions that delay the onset of aging-associated chronic diseases. Data from preclinical studies show that aging of various tissues is accompanied by a decrease in the concentration of nicotinamide adenine dinucleotide (NAD), which plays a central role in energy homeostasis. Thus, a hypothesis has emerged that normalization of its content would ameliorate the age-related decline in tissue function and therefore improve health of the elderly. This idea, along with the documented safety and high tolerability of NAD precursor supplementation, makes NAD metabolism a prospective target for anti-aging interventions. Interestingly, muscle NAD biosynthesis pathways are stimulated by exercise training, which suggests that training-induced adaptations rely on tissue NAD levels. However, while the relationship between muscle fitness and regular physical activity is well-characterized, the proposed synergy between muscle NAD replenishment and exercise training has not been established. Here, we review the published data on the role of NAD metabolism in exercise in the context of young and aged skeletal muscle and discuss the current challenges relevant to the field.
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Affiliation(s)
- Sabina Chubanava
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Science, University of Copenhagen, Denmark
| | - Jonas T Treebak
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Science, University of Copenhagen, Denmark.
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9
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Fasted Sprint Interval Training Results in Some Beneficial Skeletal Muscle Metabolic, but Similar Metabolomic and Performance Adaptations Compared With Carbohydrate-Fed Training in Recreationally Active Male. Int J Sport Nutr Exerc Metab 2023; 33:73-83. [PMID: 36572038 DOI: 10.1123/ijsnem.2022-0142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 10/28/2022] [Accepted: 10/29/2022] [Indexed: 12/28/2022]
Abstract
Endurance training in fasted conditions (FAST) induces favorable skeletal muscle metabolic adaptations compared with carbohydrate feeding (CHO), manifesting in improved exercise performance over time. Sprint interval training (SIT) is a potent metabolic stimulus, however nutritional strategies to optimize adaptations to SIT are poorly characterized. Here we investigated the efficacy of FAST versus CHO SIT (4-6 × 30-s Wingate sprints interspersed with 4-min rest) on muscle metabolic, serum metabolome and exercise performance adaptations in a double-blind parallel group design in recreationally active males. Following acute SIT, we observed exercise-induced increases in pan-acetylation and several genes associated with mitochondrial biogenesis, fatty acid oxidation, and NAD+-biosynthesis, along with favorable regulation of PDK4 (p = .004), NAMPT (p = .0013), and NNMT (p = .001) in FAST. Following 3 weeks of SIT, NRF2 (p = .029) was favorably regulated in FAST, with augmented pan-acetylation in CHO but not FAST (p = .033). SIT induced increases in maximal citrate synthase activity were evident with no effect of nutrition, while 3-hydroxyacyl-CoA dehydrogenase activity did not change. Despite no difference in the overall serum metabolome, training-induced changes in C3:1 (p = .013) and C4:1 (p = .010) which increased in FAST, and C16:1 (p = .046) and glutamine (p = .021) which increased in CHO, were different between groups. Training-induced increases in anaerobic (p = .898) and aerobic power (p = .249) were not influenced by nutrition. These findings suggest some beneficial muscle metabolic adaptations are evident in FAST versus CHO SIT following acute exercise and 3 weeks of SIT. However, this stimulus did not manifest in differential exercise performance adaptations.
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10
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Serrano J, Boyd J, Mason C, Smith KR, Karolyi K, Kondo S, Brown IS, Maurya SK, Meshram NN, Serna V, Gilger J, Branch DA, Gardell SJ, Baskin KK, Ayala JE, Pratley RE, Goodpaster BH, Coen PM, Kyriazis GA. The TAS1R2 sweet taste receptor regulates skeletal muscle mass and fitness. RESEARCH SQUARE 2023:rs.3.rs-2475555. [PMID: 36798161 PMCID: PMC9934781 DOI: 10.21203/rs.3.rs-2475555/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
Muscle fitness and mass deteriorate under the conditions of obesity and aging for reasons yet to be fully elucidated. Herein, we describe a novel pathway linking peripheral nutrient sensing and skeletal muscle function through the sweet taste receptor TAS1R2 and the involvement of ERK2-PARP1-NAD signaling axis. Muscle-specific deletion of TAS1R2 (mKO) in mice produced elevated NAD levels due to suppressed PARP1 activity, improved mitochondrial function, increased muscle mass and strength, and prolonged running endurance. Deletion of TAS1R2 in obese or aged mice also ameliorated the decline in muscle mass and fitness arising from these conditions. Remarkably, partial loss-of-function of TAS1R2 (rs35874116) in older, obese humans recapitulated the healthier muscle phenotype displayed by mKO mice in response to exercise training. Our findings show that inhibition of the TAS1R2 signaling in skeletal muscle is a promising therapeutic approach to preserve muscle mass and function.
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Affiliation(s)
- Joan Serrano
- Biological Chemistry & Pharmacology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Jordan Boyd
- Biological Chemistry & Pharmacology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Carter Mason
- Biological Chemistry & Pharmacology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Kathleen R Smith
- Biological Chemistry & Pharmacology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Katalin Karolyi
- Biological Chemistry & Pharmacology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Saki Kondo
- Biological Chemistry & Pharmacology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Ian S Brown
- Biological Chemistry & Pharmacology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Santosh K Maurya
- Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Nishita N Meshram
- Biological Chemistry & Pharmacology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Vanida Serna
- Biological Chemistry & Pharmacology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Joshua Gilger
- Biological Chemistry & Pharmacology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Daniel A Branch
- Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | | | - Kedryn K Baskin
- Physiology and Cell Biology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Julio E Ayala
- Molecular Physiology & Biophysics, Vanderbilt University School of Medicine, Nashville, TN, USA
| | | | | | - Paul M Coen
- Translational Research Institute, Advent Health, Orlando, FL, USA
| | - George A Kyriazis
- Biological Chemistry & Pharmacology, College of Medicine, The Ohio State University, Columbus, OH, USA
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11
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Cercillieux A, Ciarlo E, Canto C. Balancing NAD + deficits with nicotinamide riboside: therapeutic possibilities and limitations. Cell Mol Life Sci 2022; 79:463. [PMID: 35918544 PMCID: PMC9345839 DOI: 10.1007/s00018-022-04499-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 06/20/2022] [Accepted: 07/20/2022] [Indexed: 12/21/2022]
Abstract
Alterations in cellular nicotinamide adenine dinucleotide (NAD+) levels have been observed in multiple lifestyle and age-related medical conditions. This has led to the hypothesis that dietary supplementation with NAD+ precursors, or vitamin B3s, could exert health benefits. Among the different molecules that can act as NAD+ precursors, Nicotinamide Riboside (NR) has gained most attention due to its success in alleviating and treating disease conditions at the pre-clinical level. However, the clinical outcomes for NR supplementation strategies have not yet met the expectations generated in mouse models. In this review we aim to provide a comprehensive view on NAD+ biology, what causes NAD+ deficits and the journey of NR from its discovery to its clinical development. We also discuss what are the current limitations in NR-based therapies and potential ways to overcome them. Overall, this review will not only provide tools to understand NAD+ biology and assess its changes in disease situations, but also to decide which NAD+ precursor could have the best therapeutic potential.
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Affiliation(s)
- Angelique Cercillieux
- Nestlé Institute of Health Sciences, Nestlé Research Ltd., EPFL Campus, Innovation Park, Building G, 1015, Lausanne, Switzerland
- School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Eleonora Ciarlo
- Nestlé Institute of Health Sciences, Nestlé Research Ltd., EPFL Campus, Innovation Park, Building G, 1015, Lausanne, Switzerland
| | - Carles Canto
- Nestlé Institute of Health Sciences, Nestlé Research Ltd., EPFL Campus, Innovation Park, Building G, 1015, Lausanne, Switzerland.
- School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland.
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12
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Song M, Armenian SH, Bhandari R, Lee K, Ness K, Putt M, Lindenfeld L, Manoukian S, Wade K, Dedio A, Guzman T, Hampton I, Lin K, Baur J, McCormack S, Mostoufi-Moab S. Exercise training and NR supplementation to improve muscle mass and fitness in adolescent and young adult hematopoietic cell transplant survivors: a randomized controlled trial {1}. BMC Cancer 2022; 22:795. [PMID: 35854224 PMCID: PMC9295440 DOI: 10.1186/s12885-022-09845-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 07/01/2022] [Indexed: 11/23/2022] Open
Abstract
Background Advances in hematopoietic cell transplantation (HCT) have led to marked improvements in survival. However, adolescents and young adults (AYAs) who undergo HCT are at high risk of developing sarcopenia (loss of skeletal muscle mass) due to the impact of HCT-related exposures on the developing musculoskeletal system. HCT survivors who have sarcopenia also have excess lifetime risk of non-relapse mortality. Therefore, interventions that increase skeletal muscle mass, metabolism, strength, and function are needed to improve health in AYA HCT survivors. Skeletal muscle is highly reliant on mitochondrial energy production, as reflected by oxidative phosphorylation (OXPHOS) capacity. Exercise is one approach to target skeletal muscle mitochondrial OXPHOS, and in turn improve muscle function and strength. Another approach is to use “exercise enhancers”, such as nicotinamide riboside (NR), a safe and well-tolerated precursor of nicotinamide adenine dinucleotide (NAD+), a cofactor that in turn impacts muscle energy production. Interventions combining exercise with exercise enhancers like NR hold promise, but have not yet been rigorously tested in AYA HCT survivors. Methods/design We will perform a randomized controlled trial testing 16 weeks of in-home aerobic and resistance exercise and NR in AYA HCT survivors, with a primary outcome of muscle strength via dynamometry and a key secondary outcome of cardiovascular fitness via cardiopulmonary exercise testing. We will also test the effects of these interventions on i) muscle mass via dual energy x-ray absorptiometry; ii) muscle mitochondrial OXPHOS via an innovative non-invasive MRI-based technique, and iii) circulating correlates of NAD+ metabolism via metabolomics. Eighty AYAs (ages 15-30y) will be recruited 6–24 months post-HCT and randomized to 1 of 4 arms: exercise + NR, exercise alone, NR alone, or control. Outcomes will be collected at baseline and after the 16-week intervention. Discussion We expect that exercise with NR will produce larger changes than exercise alone in key outcomes, and that changes will be mediated by increases in muscle OXPHOS. We will apply the insights gained from this trial to develop individualized, evidence-supported precision initiatives that will reduce chronic disease burden in high-risk cancer survivors. Trial registration ClinicalTrials.gov, NCT05194397. Registered January 18, 2022, https://clinicaltrials.gov/ct2/show/NCT05194397 {2a}.
Supplementary Information The online version contains supplementary material available at 10.1186/s12885-022-09845-1.
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Affiliation(s)
- Minkeun Song
- Division of Oncology, Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104-4319, USA
| | - Saro H Armenian
- Department of Population Sciences, City of Hope, 1500, East Duarte Road, Duarte, CA, 91010-3000, USA.,Department of Pediatrics, City of Hope, 1500, East Duarte Road, Duarte, CA, 91010-3000, USA
| | - Rusha Bhandari
- Department of Population Sciences, City of Hope, 1500, East Duarte Road, Duarte, CA, 91010-3000, USA.,Department of Pediatrics, City of Hope, 1500, East Duarte Road, Duarte, CA, 91010-3000, USA
| | - Kyuwan Lee
- Department of Population Sciences, City of Hope, 1500, East Duarte Road, Duarte, CA, 91010-3000, USA
| | - Kirsten Ness
- Epidemiology and Cancer Control, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN, 38105-3678, USA
| | - Mary Putt
- Department of Biostatistics, Epidemiology & Informatics, University of Pennsylvania Perelman School of Medicine, 3400 Civic Center Blvd, Philadelphia, PA, 19104-5156, USA
| | - Lanie Lindenfeld
- Department of Population Sciences, City of Hope, 1500, East Duarte Road, Duarte, CA, 91010-3000, USA
| | - Saro Manoukian
- Department of Diagnostic Radiology, City of Hope, 1500, East Duarte Road, Duarte, CA, 91010-3000, USA
| | - Kristin Wade
- Division of Endocrinology, Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104-4319, USA
| | - Anna Dedio
- Division of Endocrinology, Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104-4319, USA
| | - Tati Guzman
- Department of Population Sciences, City of Hope, 1500, East Duarte Road, Duarte, CA, 91010-3000, USA
| | - Isabella Hampton
- Division of Oncology, Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104-4319, USA
| | - Kimberly Lin
- Cardiac Center, Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104-4319, USA
| | - Joseph Baur
- Department of Physiology, University of Pennsylvania Perelman School of Medicine, 3400 Civic Center Blvd, Philadelphia, PA, 19104-5156, USA
| | - Shana McCormack
- Division of Endocrinology, Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104-4319, USA
| | - Sogol Mostoufi-Moab
- Division of Oncology, Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104-4319, USA.
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13
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Maintenance of NAD+ Homeostasis in Skeletal Muscle during Aging and Exercise. Cells 2022; 11:cells11040710. [PMID: 35203360 PMCID: PMC8869961 DOI: 10.3390/cells11040710] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 02/07/2022] [Accepted: 02/12/2022] [Indexed: 12/20/2022] Open
Abstract
Nicotinamide adenine dinucleotide (NAD) is a versatile chemical compound serving as a coenzyme in metabolic pathways and as a substrate to support the enzymatic functions of sirtuins (SIRTs), poly (ADP-ribose) polymerase-1 (PARP-1), and cyclic ADP ribose hydrolase (CD38). Under normal physiological conditions, NAD+ consumption is matched by its synthesis primarily via the salvage pathway catalyzed by nicotinamide phosphoribosyltransferase (NAMPT). However, aging and muscular contraction enhance NAD+ utilization, whereas NAD+ replenishment is limited by cellular sources of NAD+ precursors and/or enzyme expression. This paper will briefly review NAD+ metabolic functions, its roles in regulating cell signaling, mechanisms of its degradation and biosynthesis, and major challenges to maintaining its cellular level in skeletal muscle. The effects of aging, physical exercise, and dietary supplementation on NAD+ homeostasis will be highlighted based on recent literature.
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14
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Damgaard MV, Nielsen TS, Basse AL, Chubanava S, Trost K, Moritz T, Dellinger RW, Larsen S, Treebak JT. Intravenous nicotinamide riboside elevates mouse skeletal muscle NAD+ without impacting respiratory capacity or insulin sensitivity. iScience 2022; 25:103863. [PMID: 35198907 PMCID: PMC8844641 DOI: 10.1016/j.isci.2022.103863] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 01/18/2022] [Accepted: 01/28/2022] [Indexed: 11/30/2022] Open
Abstract
In clinical trials, oral supplementation with nicotinamide riboside (NR) fails to increase muscle mitochondrial respiratory capacity and insulin sensitivity but also does not increase muscle NAD+ levels. This study tests the feasibility of chronically elevating skeletal muscle NAD+ in mice and investigates the putative effects on mitochondrial respiratory capacity, insulin sensitivity, and gene expression. Accordingly, to improve bioavailability to skeletal muscle, we developed an experimental model for administering NR repeatedly through a jugular vein catheter. Mice on a Western diet were treated with various combinations of NR, pterostilbene (PT), and voluntary wheel running, but the metabolic effects of NR and PT treatment were modest. We conclude that the chronic elevation of skeletal muscle NAD+ by the intravenous injection of NR is possible but does not affect muscle respiratory capacity or insulin sensitivity in either sedentary or physically active mice. Our data have implications for NAD+ precursor supplementation regimens. A model was developed for daily intravenous NR injections Intravenous NR stably elevates NAD+ of skeletal muscle and adipose, but not liver Voluntary running and intravenous NR synergize to boost mouse skeletal muscle NAD+ NR did not impact skeletal muscle insulin sensitivity or respiratory capacity
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Affiliation(s)
- Mads V. Damgaard
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
| | - Thomas S. Nielsen
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
| | - Astrid L. Basse
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
| | - Sabina Chubanava
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
| | - Kajetan Trost
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
| | - Thomas Moritz
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
| | | | - Steen Larsen
- Center for Healthy Aging, Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
- Clinical Research Centre, Medical University of Bialystok, Bialystok, Poland
| | - Jonas T. Treebak
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
- Corresponding author
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15
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Williams AS, Koves TR, Pettway YD, Draper JA, Slentz DH, Grimsrud PA, Ilkayeva OR, Muoio DM. Nicotinamide riboside supplementation confers marginal metabolic benefits in obese mice without remodeling the muscle acetyl-proteome. iScience 2022; 25:103635. [PMID: 35028529 PMCID: PMC8741497 DOI: 10.1016/j.isci.2021.103635] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 07/22/2021] [Accepted: 12/14/2021] [Indexed: 12/20/2022] Open
Abstract
Nicotinamide riboside supplements (NRS) have been touted as a nutraceutical that promotes cardiometabolic and musculoskeletal health by enhancing nicotinamide adenine dinucleotide (NAD+) biosynthesis, mitochondrial function, and/or the activities of NAD-dependent sirtuin deacetylase enzymes. This investigation examined the impact of NRS on whole body energy homeostasis, skeletal muscle mitochondrial function, and corresponding shifts in the acetyl-lysine proteome, in the context of diet-induced obesity using C57BL/6NJ mice. The study also included a genetically modified mouse model that imposes greater demand on sirtuin flux and associated NAD+ consumption, specifically within muscle tissues. In general, whole body glucose control was marginally improved by NRS when administered at the midpoint of a chronic high-fat diet, but not when given as a preventative therapy upon initiation of the diet. Contrary to anticipated outcomes, the study produced little evidence that NRS increases tissue NAD+ levels, augments mitochondrial function, and/or mitigates diet-induced hyperacetylation of the skeletal muscle proteome.
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Affiliation(s)
- Ashley S. Williams
- Duke Molecular Physiology Institute and Sarah W. Stedman Nutrition and Metabolism Center, Duke University Medical Center, Durham, NC 27701, USA
| | - Timothy R. Koves
- Duke Molecular Physiology Institute and Sarah W. Stedman Nutrition and Metabolism Center, Duke University Medical Center, Durham, NC 27701, USA
- Divison of Geriatrics, Duke University Medical Center, Durham, NC 27710, USA
| | - Yasminye D. Pettway
- Duke Molecular Physiology Institute and Sarah W. Stedman Nutrition and Metabolism Center, Duke University Medical Center, Durham, NC 27701, USA
| | - James A. Draper
- Duke Molecular Physiology Institute and Sarah W. Stedman Nutrition and Metabolism Center, Duke University Medical Center, Durham, NC 27701, USA
| | - Dorothy H. Slentz
- Duke Molecular Physiology Institute and Sarah W. Stedman Nutrition and Metabolism Center, Duke University Medical Center, Durham, NC 27701, USA
| | - Paul A. Grimsrud
- Duke Molecular Physiology Institute and Sarah W. Stedman Nutrition and Metabolism Center, Duke University Medical Center, Durham, NC 27701, USA
- Department of Medicine, Division of Endocrinology, Metabolism, and Nutrition, Duke University Medical Center, Durham, NC 27710, USA
| | - Olga R. Ilkayeva
- Duke Molecular Physiology Institute and Sarah W. Stedman Nutrition and Metabolism Center, Duke University Medical Center, Durham, NC 27701, USA
- Department of Medicine, Division of Endocrinology, Metabolism, and Nutrition, Duke University Medical Center, Durham, NC 27710, USA
| | - Deborah M. Muoio
- Duke Molecular Physiology Institute and Sarah W. Stedman Nutrition and Metabolism Center, Duke University Medical Center, Durham, NC 27701, USA
- Department of Medicine, Division of Endocrinology, Metabolism, and Nutrition, Duke University Medical Center, Durham, NC 27710, USA
- Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC 27710, USA
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16
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Campelj D, Philp A. NAD + Therapeutics and Skeletal Muscle Adaptation to Exercise in Humans. Sports Med 2022; 52:91-99. [PMID: 36331703 PMCID: PMC9734213 DOI: 10.1007/s40279-022-01772-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/28/2022] [Indexed: 11/06/2022]
Abstract
Nicotinamide adenine dinucleotide (NAD+) is a vital energy intermediate in skeletal muscle. The discovery of dietary-derived NAD+ precursors has led to the rapid development of NAD+ therapeutics designed to manipulate NAD+ content in target tissues. Of those developed, nicotinamide riboside and nicotinamide mononucleotide have been reported to display health benefit in humans under clinical scenarios of NAD+ deficiency. In contrast, relatively little is known regarding the potential benefit of nicotinamide riboside and nicotinamide mononucleotide supplementation in healthy individuals, with questions remaining as to whether NAD+ therapeutics can be used to support training adaptation or improve performance in athletic populations. Examining animal and human nicotinamide riboside supplementation studies, this review discusses current evidence suggesting that NAD+ therapeutics do not alter skeletal muscle metabolism or improve athletic performance in healthy humans. Further, we will highlight potential reasons why nicotinamide riboside supplementation studies do not translate to healthy populations and discuss the futility of testing NAD+ therapeutics outside of the clinical populations where NAD+ deficiency is present.
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Affiliation(s)
- Dean Campelj
- grid.248902.50000 0004 0444 7512Biology of Ageing Laboratory, Centenary Institute, Missenden Road, Camperdown, Sydney, NSW 2050 Australia ,grid.248902.50000 0004 0444 7512Centre for Healthy Ageing, Centenary Institute, Missenden Road, Sydney, NSW Australia ,grid.1013.30000 0004 1936 834XFaculty of Medicine and Health, Charles Perkins Centre, University of Sydney, Sydney, NSW Australia
| | - Andrew Philp
- grid.248902.50000 0004 0444 7512Biology of Ageing Laboratory, Centenary Institute, Missenden Road, Camperdown, Sydney, NSW 2050 Australia ,grid.248902.50000 0004 0444 7512Centre for Healthy Ageing, Centenary Institute, Missenden Road, Sydney, NSW Australia ,grid.1013.30000 0004 1936 834XFaculty of Medicine and Health, Charles Perkins Centre, University of Sydney, Sydney, NSW Australia ,grid.117476.20000 0004 1936 7611Faculty of Health, School of Sport, Exercise and Rehabilitation Sciences, University of Technology Sydney, Ultimo, NSW Australia
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17
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BST1 regulates nicotinamide riboside metabolism via its glycohydrolase and base-exchange activities. Nat Commun 2021; 12:6767. [PMID: 34799586 PMCID: PMC8604996 DOI: 10.1038/s41467-021-27080-3] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 11/04/2021] [Indexed: 11/09/2022] Open
Abstract
Nicotinamide riboside (NR) is one of the orally bioavailable NAD+ precursors and has been demonstrated to exhibit beneficial effects against aging and aging-associated diseases. However, the metabolic pathway of NR in vivo is not yet fully understood. Here, we demonstrate that orally administered NR increases NAD+ level via two different pathways. In the early phase, NR was directly absorbed and contributed to NAD+ generation through the NR salvage pathway, while in the late phase, NR was hydrolyzed to nicotinamide (NAM) by bone marrow stromal cell antigen 1 (BST1), and was further metabolized by the gut microbiota to nicotinic acid, contributing to generate NAD+ through the Preiss-Handler pathway. Furthermore, we report BST1 has a base-exchange activity against both NR and nicotinic acid riboside (NAR) to generate NAR and NR, respectively, connecting amidated and deamidated pathways. Thus, we conclude that BST1 plays a dual role as glycohydrolase and base-exchange enzyme during oral NR supplementation.
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18
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Lundt S, Ding S. NAD + Metabolism and Diseases with Motor Dysfunction. Genes (Basel) 2021; 12:1776. [PMID: 34828382 PMCID: PMC8625820 DOI: 10.3390/genes12111776] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 11/04/2021] [Accepted: 11/05/2021] [Indexed: 12/12/2022] Open
Abstract
Neurodegenerative diseases result in the progressive deterioration of the nervous system, with motor and cognitive impairments being the two most observable problems. Motor dysfunction could be caused by motor neuron diseases (MNDs) characterized by the loss of motor neurons, such as amyotrophic lateral sclerosis and Charcot-Marie-Tooth disease, or other neurodegenerative diseases with the destruction of brain areas that affect movement, such as Parkinson's disease and Huntington's disease. Nicotinamide adenine dinucleotide (NAD+) is one of the most abundant metabolites in the human body and is involved with numerous cellular processes, including energy metabolism, circadian clock, and DNA repair. NAD+ can be reversibly oxidized-reduced or directly consumed by NAD+-dependent proteins. NAD+ is synthesized in cells via three different paths: the de novo, Preiss-Handler, or NAD+ salvage pathways, with the salvage pathway being the primary producer of NAD+ in mammalian cells. NAD+ metabolism is being investigated for a role in the development of neurodegenerative diseases. In this review, we discuss cellular NAD+ homeostasis, looking at NAD+ biosynthesis and consumption, with a focus on the NAD+ salvage pathway. Then, we examine the research, including human clinical trials, focused on the involvement of NAD+ in MNDs and other neurodegenerative diseases with motor dysfunction.
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Affiliation(s)
- Samuel Lundt
- Dalton Cardiovascular Research Center, University of Missouri-Columbia, Columbia, MO 65211, USA;
- Interdisciplinary Neuroscience Program, University of Missouri-Columbia, Columbia, MO 65211, USA
| | - Shinghua Ding
- Dalton Cardiovascular Research Center, University of Missouri-Columbia, Columbia, MO 65211, USA;
- Department of Biomedical, Biological and Chemical Engineering, University of Missouri-Columbia, Columbia, MO 65211, USA
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19
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Spinelli S, Begani G, Guida L, Magnone M, Galante D, D'Arrigo C, Scotti C, Iamele L, De Jonge H, Zocchi E, Sturla L. LANCL1 binds abscisic acid and stimulates glucose transport and mitochondrial respiration in muscle cells via the AMPK/PGC-1α/Sirt1 pathway. Mol Metab 2021; 53:101263. [PMID: 34098144 PMCID: PMC8237609 DOI: 10.1016/j.molmet.2021.101263] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 05/28/2021] [Accepted: 05/28/2021] [Indexed: 12/18/2022] Open
Abstract
OBJECTIVE Abscisic acid (ABA) is a plant hormone also present and active in animals. In mammals, ABA regulates blood glucose levels by stimulating insulin-independent glucose uptake and metabolism in adipocytes and myocytes through its receptor LANCL2. The objective of this study was to investigate whether another member of the LANCL protein family, LANCL1, also behaves as an ABA receptor and, if so, which functional effects are mediated by LANCL1. METHODS ABA binding to human recombinant LANCL1 was explored by equilibrium-binding experiments with [3H]ABA, circular dichroism, and surface plasmon resonance. Rat L6 myoblasts overexpressing either LANCL1 or LANCL2, or silenced for the expression of both proteins, were used to investigate the basal and ABA-stimulated transport of a fluorescent glucose analog (NBDG) and the signaling pathway downstream of the LANCL proteins using Western blot and qPCR analysis. Finally, glucose tolerance and sensitivity to ABA were compared in LANCL2-/- and wild-type (WT) siblings. RESULTS Human recombinant LANCL1 binds ABA with a Kd between 1 and 10 μM, depending on the assay (i.e., in a concentration range that lies between the low and high-affinity ABA binding sites of LANCL2). In L6 myoblasts, LANCL1 and LANCL2 similarly, i) stimulate both basal and ABA-triggered NBDG uptake (4-fold), ii) activate the transcription and protein expression of the glucose transporters GLUT4 and GLUT1 (4-6-fold) and the signaling proteins AMPK/PGC-1α/Sirt1 (2-fold), iii) stimulate mitochondrial respiration (5-fold) and the expression of the skeletal muscle (SM) uncoupling proteins sarcolipin (3-fold) and UCP3 (12-fold). LANCL2-/- mice have a reduced glucose tolerance compared to WT. They spontaneously overexpress LANCL1 in the SM and respond to chronic ABA treatment (1 μg/kg body weight/day) with an improved glycemia response to glucose load and an increased SM transcription of GLUT4 and GLUT1 (20-fold) of the AMPK/PGC-1α/Sirt1 pathway and sarcolipin, UCP3, and NAMPT (4- to 6-fold). CONCLUSIONS LANCL1 behaves as an ABA receptor with a somewhat lower affinity for ABA than LANCL2 but with overlapping effector functions: stimulating glucose uptake and the expression of muscle glucose transporters and mitochondrial uncoupling and respiration via the AMPK/PGC-1α/Sirt1 pathway. Receptor redundancy may have been advantageous in animal evolution, given the role of the ABA/LANCL system in the insulin-independent stimulation of cell glucose uptake and energy metabolism.
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Affiliation(s)
- Sonia Spinelli
- Department of Experimental Medicine, Section of Biochemistry, School of Medical and Pharmaceutical Sciences, University of Genova, Viale Benedetto XV 1, 16132, Genova, Italy
| | - Giulia Begani
- Department of Experimental Medicine, Section of Biochemistry, School of Medical and Pharmaceutical Sciences, University of Genova, Viale Benedetto XV 1, 16132, Genova, Italy
| | - Lucrezia Guida
- Department of Experimental Medicine, Section of Biochemistry, School of Medical and Pharmaceutical Sciences, University of Genova, Viale Benedetto XV 1, 16132, Genova, Italy
| | - Mirko Magnone
- Department of Experimental Medicine, Section of Biochemistry, School of Medical and Pharmaceutical Sciences, University of Genova, Viale Benedetto XV 1, 16132, Genova, Italy
| | - Denise Galante
- Institute for Macromolecular Studies, National Research Council, Via De Marini 6, 16149, Genova, Italy
| | - Cristina D'Arrigo
- Institute for Macromolecular Studies, National Research Council, Via De Marini 6, 16149, Genova, Italy
| | - Claudia Scotti
- Department of Molecular Medicine, Immunology and General Pathology Unit, University of Pavia, Via Ferrata 9, 27100, Pavia, Italy; Ardis Srl, Via Taramelli 24, 27100, Pavia, Italy
| | - Luisa Iamele
- Department of Molecular Medicine, Immunology and General Pathology Unit, University of Pavia, Via Ferrata 9, 27100, Pavia, Italy; Ardis Srl, Via Taramelli 24, 27100, Pavia, Italy
| | - Hugo De Jonge
- Department of Molecular Medicine, Immunology and General Pathology Unit, University of Pavia, Via Ferrata 9, 27100, Pavia, Italy; Ardis Srl, Via Taramelli 24, 27100, Pavia, Italy
| | - Elena Zocchi
- Department of Experimental Medicine, Section of Biochemistry, School of Medical and Pharmaceutical Sciences, University of Genova, Viale Benedetto XV 1, 16132, Genova, Italy.
| | - Laura Sturla
- Department of Experimental Medicine, Section of Biochemistry, School of Medical and Pharmaceutical Sciences, University of Genova, Viale Benedetto XV 1, 16132, Genova, Italy
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20
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Liao B, Zhao Y, Wang D, Zhang X, Hao X, Hu M. Nicotinamide mononucleotide supplementation enhances aerobic capacity in amateur runners: a randomized, double-blind study. J Int Soc Sports Nutr 2021; 18:54. [PMID: 34238308 PMCID: PMC8265078 DOI: 10.1186/s12970-021-00442-4] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 05/18/2021] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Recent studies in rodents indicate that a combination of exercise training and supplementation with nicotinamide adenine dinucleotide (NAD+) precursors has synergistic effects. However, there are currently no human clinical trials analyzing this. OBJECTIVE This study investigates the effects of a combination of exercise training and supplementation with nicotinamide mononucleotide (NMN), the immediate precursor of NAD+, on cardiovascular fitness in healthy amateur runners. METHODS A six-week randomized, double-blind, placebo-controlled, four-arm clinical trial including 48 young and middle-aged recreationally trained runners of the Guangzhou Pearl River running team was conducted. The participants were randomized into four groups: the low dosage group (300 mg/day NMN), the medium dosage group (600 mg/day NMN), the high dosage group (1200 mg/day NMN), and the control group (placebo). Each group consisted of ten male participants and two female participants. Each training session was 40-60 min, and the runners trained 5-6 times each week. Cardiopulmonary exercise testing was performed at baseline and after the intervention, at 6 weeks, to assess the aerobic capacity of the runners. RESULTS Analysis of covariance of the change from baseline over the 6 week treatment showed that the oxygen uptake (VO2), percentages of maximum oxygen uptake (VO2max), power at first ventilatory threshold, and power at second ventilatory threshold increased to a higher degree in the medium and high dosage groups compared with the control group. However, there was no difference in VO2max, O2-pulse, VO2 related to work rate, and peak power after the 6 week treatment from baseline in any of these groups. CONCLUSION NMN increases the aerobic capacity of humans during exercise training, and the improvement is likely the result of enhanced O2 utilization of the skeletal muscle. TRIAL REGISTRATION NUMBER ChiCTR2000035138 .
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Affiliation(s)
- Bagen Liao
- Department of Sports Medicine, Guangzhou Sport University, Guangzhou, 510150, China.
| | - Yunlong Zhao
- Guangdong Physical Fitness and Health Management Association, Guangzhou, 510310, China
| | - Dan Wang
- Department of Sports Medicine, Guangzhou Sport University, Guangzhou, 510150, China.,Guangdong Physical Fitness and Health Management Association, Guangzhou, 510310, China
| | - Xiaowen Zhang
- Guangzhou Institute of Sports Science, Guangzhou, 510620, China
| | - Xuanming Hao
- South China Normal University, Guangzhou, 510631, China
| | - Min Hu
- Department of Sports Medicine, Guangzhou Sport University, Guangzhou, 510150, China
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21
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Yu J, Laybutt DR, Kim LJ, Quek LE, Wu LE, Morris MJ, Youngson NA. Exercise-induced benefits on glucose handling in a model of diet-induced obesity are reduced by concurrent nicotinamide mononucleotide. Am J Physiol Endocrinol Metab 2021; 321:E176-E189. [PMID: 34121447 DOI: 10.1152/ajpendo.00446.2020] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Almost 40% of adults worldwide are classified as overweight or obese. Exercise is a beneficial intervention in obesity, partly due to increases in mitochondrial activity and subsequent increases in nicotinamide adenine dinucleotide (NAD+), an important metabolic cofactor. Recent studies have shown that increasing NAD+ levels through pharmacological supplementation with precursors such as nicotinamide mononucleotide (NMN) improved metabolic health in high-fat-diet (HFD)-fed mice. However, the effects of combined exercise and NMN supplementation are unknown. Thus, here we examined the combined effects of NMN and treadmill exercise in female mice with established obesity after 10 wk of diet. Five-week-old female C57BL/6J mice were exposed to a control diet (n = 16) or HFD. Mice fed a HFD were either untreated (HFD; n = 16), received NMN in drinking water (400 mg/kg; HNMN; n = 16), were exposed to treadmill exercise 6 days/wk (HEx; n = 16), or were exposed to exercise combined with NMN (HNEx; n = 16). Although some metabolic benefits of NMN have been described, at this dose, NMN administration impaired several aspects of exercise-induced benefits in obese mice, including glucose tolerance, glucose-stimulated insulin secretion from islets, and hepatic triglyceride accumulation. HNEx mice also exhibited increased antioxidant and reduced prooxidant gene expression in both islets and muscle, suggesting that altered redox status is associated with the loss of exercise-induced health benefits with NMN cotreatment. Our data show that NMN treatment impedes the beneficial metabolic effects of exercise in a mouse model of diet-induced obesity in association with disturbances in redox metabolism.NEW & NOTEWORTHY NMN dampened exercise-induced benefits on glucose handling in diet-induced obesity. NMN administration alongside treadmill exercise enhanced the ratio of antioxidants to prooxidants. We suggest that NMN administration may not be beneficial when NAD+ levels are replete.
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Affiliation(s)
- Josephine Yu
- School of Medical Sciences, UNSW Sydney, Sydney, New South Wales, Australia
| | - David Ross Laybutt
- Garvan Institute of Medical Research, St Vincent's Clinical School, UNSW Sydney, Sydney, New South Wales, Australia
| | - Lynn-Jee Kim
- School of Medical Sciences, UNSW Sydney, Sydney, New South Wales, Australia
| | - Lake-Ee Quek
- Charles Perkins Centre, University of Sydney, Sydney, New South Wales, Australia
- School of Mathematics and Statistics, University of Sydney, Sydney, New South Wales, Australia
| | - Lindsay E Wu
- School of Medical Sciences, UNSW Sydney, Sydney, New South Wales, Australia
| | - Margaret J Morris
- School of Medical Sciences, UNSW Sydney, Sydney, New South Wales, Australia
| | - Neil A Youngson
- School of Medical Sciences, UNSW Sydney, Sydney, New South Wales, Australia
- The Institute of Hepatology, Foundation for Liver Research, London, United Kingdom
- Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom
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22
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Méndez-Lara KA, Rodríguez-Millán E, Sebastián D, Blanco-Soto R, Camacho M, Nan MN, Diarte-Añazco EMG, Mato E, Lope-Piedrafita S, Roglans N, Laguna JC, Alonso N, Mauricio D, Zorzano A, Villarroya F, Villena JA, Blanco-Vaca F, Julve J. Nicotinamide Protects Against Diet-Induced Body Weight Gain, Increases Energy Expenditure, and Induces White Adipose Tissue Beiging. Mol Nutr Food Res 2021; 65:e2100111. [PMID: 33870623 DOI: 10.1002/mnfr.202100111] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 03/31/2021] [Indexed: 12/30/2022]
Abstract
SCOPE Interventions that boost NAD+ availability are of potential therapeutic interest for obesity treatment. The potential of nicotinamide (NAM), the amide form of vitamin B3 and a physiological precursor of nicotinamide adenine dinucleotide (NAD)+ , in preventing weight gain has not previously been studied in vivo. Other NAD+ precursors have been shown to decrease weight gain; however, their impact on adipose tissue is not addressed. METHODS AND RESULTS Two doses of NAM (high dose: 1% and low dose: 0.25%) are given by drinking water to C57BL/6J male mice, starting at the same time as the high-fat diet feeding. NAM supplementation protects against diet-induced obesity by augmenting global body energy expenditure in C57BL/6J male mice. The manipulation markedly alters adipose morphology and metabolism, particularly in inguinal (i) white adipose tissue (iWAT). An increased number of brown and beige adipocyte clusters, protein abundance of uncoupling protein 1 (UCP1), mitochondrial activity, adipose NAD+ , and phosphorylated AMP-activated protein kinase (P-AMPK) levels are observed in the iWAT of treated mice. Notably, a significant improvement in hepatic steatosis, inflammation, and glucose tolerance is also observed in NAM high-dose treated mice. CONCLUSION NAM influences whole-body energy expenditure by driving changes in the adipose phenotype. Thus, NAM is an attractive potential treatment for preventing obesity and associated complications.
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Affiliation(s)
- Karen Alejandra Méndez-Lara
- Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau i Institut d'Investigació Biomèdica de l'Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, Barcelona, 08041, Spain
- Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona (UAB), Barcelona, 08193, Spain
| | - Elisabeth Rodríguez-Millán
- Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau i Institut d'Investigació Biomèdica de l'Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, Barcelona, 08041, Spain
| | - David Sebastián
- Departament de Bioquímica i Biomedicina, Facultat de Biologia, Universitat de Barcelona (UB), Barcelona, 08028, Spain
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Barcelona, 08028, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas, CIBERDEM, Madrid, 28028, Spain
| | - Rosi Blanco-Soto
- Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina, CIBER-BBN, Madrid, 28028, Spain
| | - Mercedes Camacho
- Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau i Institut d'Investigació Biomèdica de l'Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, Barcelona, 08041, Spain
| | - Madalina N Nan
- Servei de Bioquímica, Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, Barcelona, 08041, Spain
| | - Elena M G Diarte-Añazco
- Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau i Institut d'Investigació Biomèdica de l'Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, Barcelona, 08041, Spain
| | - Eugènia Mato
- Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina, CIBER-BBN, Madrid, 28028, Spain
| | - Silvia Lope-Piedrafita
- Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina, CIBER-BBN, Madrid, 28028, Spain
- Servei de Ressonància Magnètica Nuclear, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Barcelona, 08193, Spain
| | - Núria Roglans
- Departament de Farmacologia, Toxicologia i Química Terapèutica, Facultat de Farmàcia, Universitat de Barcelona, Barcelona, 08028, Spain
| | - Juan Carlos Laguna
- Departament de Farmacologia, Toxicologia i Química Terapèutica, Facultat de Farmàcia, Universitat de Barcelona, Barcelona, 08028, Spain
| | - Núria Alonso
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas, CIBERDEM, Madrid, 28028, Spain
- Servei d'Endocrinologia, Hospital Universitari Germans Trias i Pujol, Badalona, Barcelona, 08916, Spain
| | - Dídac Mauricio
- Departament de Bioquímica i Biomedicina, Facultat de Biologia, Universitat de Barcelona (UB), Barcelona, 08028, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas, CIBERDEM, Madrid, 28028, Spain
- Servei de Endocrinologia i Nutrició, Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, Barcelona, 08041, Spain
| | - Antonio Zorzano
- Departament de Bioquímica i Biomedicina, Facultat de Biologia, Universitat de Barcelona (UB), Barcelona, 08028, Spain
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Barcelona, 08028, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas, CIBERDEM, Madrid, 28028, Spain
| | - Francesc Villarroya
- Departament de Bioquímica i Biomedicina, Facultat de Biologia, Universitat de Barcelona (UB), Barcelona, 08028, Spain
- Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición, CIBEROBN, Madrid, 28028, Spain
| | - Josep A Villena
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas, CIBERDEM, Madrid, 28028, Spain
- Laboratori de Metabolisme i Obesitat, Unitat de Diabetis i Metabolisme, Institut de Recerca del Vall d'Hebron, Barcelona, 08035, Spain
| | - Francisco Blanco-Vaca
- Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona (UAB), Barcelona, 08193, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas, CIBERDEM, Madrid, 28028, Spain
- Servei de Bioquímica, Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, Barcelona, 08041, Spain
| | - Josep Julve
- Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau i Institut d'Investigació Biomèdica de l'Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, Barcelona, 08041, Spain
- Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona (UAB), Barcelona, 08193, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas, CIBERDEM, Madrid, 28028, Spain
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23
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Role of PGC-1α in the Mitochondrial NAD + Pool in Metabolic Diseases. Int J Mol Sci 2021; 22:ijms22094558. [PMID: 33925372 PMCID: PMC8123861 DOI: 10.3390/ijms22094558] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 04/20/2021] [Accepted: 04/23/2021] [Indexed: 12/12/2022] Open
Abstract
Mitochondria play vital roles, including ATP generation, regulation of cellular metabolism, and cell survival. Mitochondria contain the majority of cellular nicotinamide adenine dinucleotide (NAD+), which an essential cofactor that regulates metabolic function. A decrease in both mitochondria biogenesis and NAD+ is a characteristic of metabolic diseases, and peroxisome proliferator-activated receptor γ coactivator 1-α (PGC-1α) orchestrates mitochondrial biogenesis and is involved in mitochondrial NAD+ pool. Here we discuss how PGC-1α is involved in the NAD+ synthesis pathway and metabolism, as well as the strategy for increasing the NAD+ pool in the metabolic disease state.
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24
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Akiu M, Tsuji T, Sogawa Y, Terayama K, Yokoyama M, Tanaka J, Asano D, Sakurai K, Sergienko E, Sessions EH, Gardell SJ, Pinkerton AB, Nakamura T. Discovery of 1-[2-(1-methyl-1H-pyrazol-5-yl)-[1,2,4]triazolo[1,5-a]pyridin-6-yl]-3-(pyridin-4-ylmethyl)urea as a potent NAMPT (nicotinamide phosphoribosyltransferase) activator with attenuated CYP inhibition. Bioorg Med Chem Lett 2021; 43:128048. [PMID: 33887438 DOI: 10.1016/j.bmcl.2021.128048] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 04/09/2021] [Accepted: 04/14/2021] [Indexed: 12/11/2022]
Abstract
Nicotinamide phosphoribosyltransferase (NAMPT) catalyzes the rate-limiting step of the NAD+ salvage pathway. Since NAD+ plays a pivotal role in many biological processes including metabolism and aging, activation of NAMPT is an attractive therapeutic target for treatment of diverse array of diseases. Herein, we report the continued optimization of novel urea-containing derivatives which were identified as potent NAMPT activators. Early optimization of HTS hits afforded compound 12, with a triazolopyridine core, as a lead compound. CYP direct inhibition (DI) was identified as an issue of concern, and was resolved through modulation of lipophilicity to culminate in 1-[2-(1-methyl-1H-pyrazol-5-yl)-[1,2,4]triazolo[1,5-a]pyridin-6-yl]-3-(pyridin-4-ylmethyl)urea (21), which showed potent NAMPT activity accompanied with attenuated CYP DI towards multiple CYP isoforms.
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Affiliation(s)
- Mayuko Akiu
- R&D Division, Daiichi Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan.
| | - Takashi Tsuji
- R&D Division, Daiichi Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan
| | - Yoshitaka Sogawa
- R&D Division, Daiichi Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan
| | - Koji Terayama
- R&D Division, Daiichi Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan
| | - Mika Yokoyama
- R&D Division, Daiichi Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan
| | - Jun Tanaka
- R&D Division, Daiichi Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan
| | - Daigo Asano
- R&D Division, Daiichi Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan
| | - Ken Sakurai
- R&D Division, Daiichi Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan
| | - Eduard Sergienko
- Sanford Burnham Prebys Medical Discovery Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - E Hampton Sessions
- Sanford Burnham Prebys Medical Discovery Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Stephen J Gardell
- Translational Research Institute, AdventHealth, Orlando, FL 32804, USA
| | - Anthony B Pinkerton
- Sanford Burnham Prebys Medical Discovery Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Tsuyoshi Nakamura
- R&D Division, Daiichi Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan
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25
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Stocks B, Ashcroft SP, Joanisse S, Dansereau LC, Koay YC, Elhassan YS, Lavery GG, Quek LE, O'Sullivan JF, Philp AM, Wallis GA, Philp A. Nicotinamide riboside supplementation does not alter whole-body or skeletal muscle metabolic responses to a single bout of endurance exercise. J Physiol 2021; 599:1513-1531. [PMID: 33492681 DOI: 10.1113/jp280825] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Accepted: 01/11/2021] [Indexed: 12/16/2022] Open
Abstract
KEY POINTS Acute nicotinamide riboside (NR) supplementation does not alter substrate metabolism at rest, during or in recovery from endurance exercise. NR does not alter NAD+ -sensitive signalling pathways in human skeletal muscle. NR supplementation and acute exercise influence the NAD+ metabolome. ABSTRACT Oral supplementation of the NAD+ precursor nicotinamide riboside (NR) has been reported to alter metabolism alongside increasing sirtuin (SIRT) signalling and mitochondrial biogenesis in rodent skeletal muscle. However, whether NR supplementation can elicit a similar response in human skeletal muscle is unclear. This study assessed the effect of 7-day NR supplementation on whole-body metabolism and exercise-induced mitochondrial biogenic signalling in skeletal muscle. Eight male participants (age: 23 ± 4 years, V ̇ O 2 peak 46.5 ± 4.4 ml kg-1 min-1 ) received 1 week of NR or cellulose placebo (PLA) supplementation (1000 mg day-1 ). Muscle biopsies were collected from the medial vastus lateralis prior to supplementation and pre-, immediately post- and 3 h post-exercise (1 h of 60% Wmax cycling) performed following the supplementation period. There was no effect of NR supplementation on substrate utilisation at rest or during exercise or on skeletal muscle mitochondrial respiration. Global acetylation, auto-PARylation of poly ADP-ribose polymerase 1 (PARP1), acetylation of Tumour protein 53 (p53)Lys382 and Manganese superoxide dismutase (MnSOD)Lys122 were also unaffected by NR supplementation or exercise. NR supplementation did not increase skeletal muscle NAD+ concentration, but it did increase the concentration of deaminated NAD+ precursors nicotinic acid riboside (NAR) and nicotinic acid mononucleotide (NAM) and methylated nicotinamide breakdown products (Me2PY and Me4PY), demonstrating the skeletal muscle bioavailability of NR supplementation. In summary, 1 week of NR supplementation does not alter whole-body metabolism or skeletal muscle signal transduction pathways implicated in the mitochondrial adaptation to endurance exercise.
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Affiliation(s)
- Ben Stocks
- School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, UK
| | - Stephen P Ashcroft
- School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, UK
| | - Sophie Joanisse
- School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, UK
| | - Linda C Dansereau
- Mitochondrial Metabolism and Ageing Laboratory, Garvan Institute of Medical Research, Sydney, NSW, 2010, Australia.,St Vincent's Clinical School, UNSW Medicine, UNSW Sydney, Sydney, Australia
| | - Yen Chin Koay
- Charles Perkins Centre, School of Life and Environmental Sciences, University of Sydney, Sydney, NSW, Australia.,Heart Research Institute, University of Sydney, Sydney, NSW, Australia
| | - Yasir S Elhassan
- Institute of Metabolism and Systems Research (IMSR), University of Birmingham, Birmingham, UK
| | - Gareth G Lavery
- Institute of Metabolism and Systems Research (IMSR), University of Birmingham, Birmingham, UK
| | - Lake-Ee Quek
- Charles Perkins Centre, School of Mathematics and Statistics, University of Sydney, Sydney, NSW, Australia
| | - John F O'Sullivan
- Charles Perkins Centre, School of Life and Environmental Sciences, University of Sydney, Sydney, NSW, Australia.,Heart Research Institute, University of Sydney, Sydney, NSW, Australia
| | - Ashleigh M Philp
- Mitochondrial Metabolism and Ageing Laboratory, Garvan Institute of Medical Research, Sydney, NSW, 2010, Australia.,St Vincent's Clinical School, UNSW Medicine, UNSW Sydney, Sydney, Australia
| | - Gareth A Wallis
- School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, UK
| | - Andrew Philp
- School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, UK.,Mitochondrial Metabolism and Ageing Laboratory, Garvan Institute of Medical Research, Sydney, NSW, 2010, Australia.,St Vincent's Clinical School, UNSW Medicine, UNSW Sydney, Sydney, Australia
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26
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[Potential significance of NAD + biology translational research in super-aged Japan]. Nihon Ronen Igakkai Zasshi 2021; 57:213-223. [PMID: 32893201 DOI: 10.3143/geriatrics.57.213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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27
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Akiu M, Tsuji T, Iida K, Sogawa Y, Terayama K, Yokoyama M, Tanaka J, Asano D, Honda T, Sakurai K, Pinkerton AB, Nakamura T. Discovery of DS68702229 as a Potent, Orally Available NAMPT (Nicotinamide Phosphoribosyltransferase) Activator. Chem Pharm Bull (Tokyo) 2021; 69:1110-1122. [PMID: 34719594 DOI: 10.1248/cpb.c21-00700] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Nicotinamide phosphoribosyltransferase (NAMPT) catalyzes the rate-limiting step of the nicotinamide adenine dinucleotide (NAD+) salvage pathway. Because NAD+ plays a pivotal role in energy metabolism and boosting NAD+ has positive effects on metabolic regulation, activation of NAMPT is an attractive therapeutic approach for the treatment of various diseases, including type 2 diabetes and obesity. Herein we report the discovery of 1-(2-phenyl-1,3-benzoxazol-6-yl)-3-(pyridin-4-ylmethyl)urea 12c (DS68702229), which was identified as a potent NAMPT activator. Compound 12c activated NAMPT, increased cellular NAD+ levels, and exhibited an excellent pharmacokinetic profile in mice after oral administration. Oral administration of compound 12c to high-fat diet-induced obese mice decreased body weight. These observations indicate that compound 12c is a promising anti-obesity drug candidate.
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28
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Frederick DW, McDougal AV, Semenas M, Vappiani J, Nuzzo A, Ulrich JC, Becherer JD, Preugschat F, Stewart EL, Sévin DC, Kramer HF. Complementary NAD + replacement strategies fail to functionally protect dystrophin-deficient muscle. Skelet Muscle 2020; 10:30. [PMID: 33092650 PMCID: PMC7579925 DOI: 10.1186/s13395-020-00249-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 09/22/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Duchenne muscular dystrophy (DMD) is a progressive muscle wasting disorder stemming from a loss of functional dystrophin. Current therapeutic options for DMD are limited, as small molecule modalities remain largely unable to decrease the incidence or mitigate the consequences of repetitive mechanical insults to the muscle during eccentric contractions (ECCs). METHODS Using a metabolomics-based approach, we observed distinct and transient molecular phenotypes in muscles of dystrophin-deficient MDX mice subjected to ECCs. Among the most chronically depleted metabolites was nicotinamide adenine dinucleotide (NAD), an essential metabolic cofactor suggested to protect muscle from structural and metabolic degeneration over time. We tested whether the MDX muscle NAD pool can be expanded for therapeutic benefit using two complementary small molecule strategies: provision of a biosynthetic precursor, nicotinamide riboside, or specific inhibition of the NAD-degrading ADP-ribosyl cyclase, CD38. RESULTS Administering a novel, potent, and orally available CD38 antagonist to MDX mice successfully reverted a majority of the muscle metabolome toward the wildtype state, with a pronounced impact on intermediates of the pentose phosphate pathway, while supplementing nicotinamide riboside did not significantly affect the molecular phenotype of the muscle. However, neither strategy sustainably increased the bulk tissue NAD pool, lessened muscle damage markers, nor improved maximal hindlimb strength following repeated rounds of eccentric challenge and recovery. CONCLUSIONS In the absence of dystrophin, eccentric injury contributes to chronic intramuscular NAD depletion with broad pleiotropic effects on the molecular phenotype of the tissue. These molecular consequences can be more effectively overcome by inhibiting the enzymatic activity of CD38 than by supplementing nicotinamide riboside. However, we found no evidence that either small molecule strategy is sufficient to restore muscle contractile function or confer protection from eccentric injury, undermining the modulation of NAD metabolism as a therapeutic approach for DMD.
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Affiliation(s)
- David W Frederick
- Muscle Metabolism Unit, GlaxoSmithKline R&D, Research Triangle Park, NC, Collegeville, PA, USA
| | - Alan V McDougal
- Muscle Metabolism Unit, GlaxoSmithKline R&D, Research Triangle Park, NC, Collegeville, PA, USA
| | - Melisa Semenas
- Muscle Metabolism Unit, GlaxoSmithKline R&D, Research Triangle Park, NC, Collegeville, PA, USA
| | | | - Andrea Nuzzo
- Target Sciences, Computational Biology, GlaxoSmithKline R&D, Collegeville, PA, USA
| | - John C Ulrich
- Muscle Metabolism Unit, GlaxoSmithKline R&D, Research Triangle Park, NC, Collegeville, PA, USA
| | - J David Becherer
- Muscle Metabolism Unit, GlaxoSmithKline R&D, Research Triangle Park, NC, Collegeville, PA, USA
| | - Frank Preugschat
- Muscle Metabolism Unit, GlaxoSmithKline R&D, Research Triangle Park, NC, Collegeville, PA, USA
| | - Eugene L Stewart
- Computational Sciences, Molecular Design, GlaxoSmithKline R&D, Collegeville, PA, USA.
| | | | - H Fritz Kramer
- Muscle Metabolism Unit, GlaxoSmithKline R&D, Research Triangle Park, NC, Collegeville, PA, USA
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29
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Administration of Nicotinamide Mononucleotide (NMN) Reduces Metabolic Impairment in Male Mouse Offspring from Obese Mothers. Cells 2020; 9:cells9040791. [PMID: 32218167 PMCID: PMC7226525 DOI: 10.3390/cells9040791] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 03/19/2020] [Accepted: 03/23/2020] [Indexed: 12/20/2022] Open
Abstract
Maternal obesity impacts offspring metabolism. We sought to boost mitochondrial energy metabolism using the nicotinamide adenine dinucleotide (NAD+) precursor nicotinamide mononucleotide (NMN) to treat metabolic impairment induced by maternal and long-term post weaning over-nutrition. Male offspring of lean or obese mothers, fed chow or high fat diet (HFD) for 30 weeks post-weaning, were given NMN injection, starting at 31 weeks of age, daily for 3 weeks before sacrifice. Glucose tolerance was tested at 10, 29 and 32 weeks of age to measure short and long term effects of post-weaning HFD, and NMN treatment. Plasma insulin and triglycerides, liver triglycerides and expression of mitochondrial metabolism-related genes were measured at 34 weeks. Impaired glucose tolerance due to maternal and post weaning HFD was significantly improved by only 8 days of NMN treatment. Furthermore, in offspring of obese mothers hepatic lipid accumulation was reduced due to NMN treatment by 50% and 23% in chow and HFD fed offspring respectively. Hepatic genes involved in fat synthesis, transport and uptake were reduced, while those involved in fatty acid oxidation were increased by NMN. Overall this finding suggests short term administration of NMN could be a therapeutic approach for treating metabolic disease due to maternal and post weaning over-nutrition, even in late adulthood.
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Boido M, Butenko O, Filippo C, Schellino R, Vrijbloed JW, Fariello RG, Vercelli A. A new protein curbs the hypertrophic effect of myostatin inhibition, adding remarkable endurance to motor performance in mice. PLoS One 2020; 15:e0228653. [PMID: 32160187 PMCID: PMC7065788 DOI: 10.1371/journal.pone.0228653] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 01/21/2020] [Indexed: 12/13/2022] Open
Abstract
Current efforts to improve muscle performance are focused on muscle trophism via inhibition of the myostatin pathway: however they have been unsuccessful in the clinic to date. In this study, a novel protein has been created by combining the soluble activin receptor, a strong myostatin inhibitor, to the C-terminal agrin nLG3 domain (ActR-Fc-nLG3) involved in the development and maintenance of neuromuscular junctions. Both domains are connected via the constant region of an Igg1 monoclonal antibody. Surprisingly, young male mice treated with ActR-Fc-nLG3 showed a remarkably increased endurance in the rotarod test, significantly longer than the single domain compounds ActR-Fc and Fc-nLG3 treated animals. This increase in endurance was accompanied by only a moderate increase in body weights and wet muscle weights of ActR-Fc-nLG3 treated animals and were lower than expected. The myostatin inhibitor ActR-Fc induced, as expected, a highly significant increase in body and muscle weights compared to control animals and ActR-Fc-nLG3 treated animals. Moreover, the prolonged endurance effect was not observed when ActR-Fc and Fc-nLG3 were dosed simultaneously as a mixture and the body and muscle weights of these animals were very similar to ActR-Fc treated animals, indicating that both domains need to be on one molecule. Muscle morphology induced by ActR-Fc-nLG3 did not appear to be changed however, close examination of the neuromuscular junction showed significantly increased acetylcholine receptor surface area for ActR-Fc-nLG3 treated animals compared to controls. This result is consistent with published observations that endurance training in rats increased acetylcholine receptor quantity at neuromuscular junctions and provide evidence that improving nerve-muscle interaction could be an important factor for sustaining long term muscle activity.
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Affiliation(s)
- Marina Boido
- Neuroscience Institute Cavalieri Ottolenghi, Department of Neuroscience "Rita Levi Montalcini", University of Torino, Torino, Italy
- * E-mail:
| | - Olena Butenko
- Neuroscience Institute Cavalieri Ottolenghi, Department of Neuroscience "Rita Levi Montalcini", University of Torino, Torino, Italy
| | - Consuelo Filippo
- Neuroscience Institute Cavalieri Ottolenghi, Department of Neuroscience "Rita Levi Montalcini", University of Torino, Torino, Italy
| | - Roberta Schellino
- Neuroscience Institute Cavalieri Ottolenghi, Department of Neuroscience "Rita Levi Montalcini", University of Torino, Torino, Italy
| | | | | | - Alessandro Vercelli
- Neuroscience Institute Cavalieri Ottolenghi, Department of Neuroscience "Rita Levi Montalcini", University of Torino, Torino, Italy
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McReynolds MR, Chellappa K, Baur JA. Age-related NAD + decline. Exp Gerontol 2020; 134:110888. [PMID: 32097708 PMCID: PMC7442590 DOI: 10.1016/j.exger.2020.110888] [Citation(s) in RCA: 81] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 02/20/2020] [Accepted: 02/21/2020] [Indexed: 12/11/2022]
Abstract
Nicotinamide adenine dinucleotide (NAD+) is an essential metabolite that is reported to decline in concentration in tissues of aged animals. Strategies to increase NAD+ availability have shown promise in treating many conditions in rodents, including age-related degeneration, which has in turn driven intense interest in the effects of supplements on human health. However, many aspects of NAD+ metabolism remain poorly understood, and human data are limited. Here, we discuss the state of the evidence for an age-related decline in NAD+, along with potential mechanistic explanations, including increased consumption or decreased synthesis of NAD+ and changes in the composition of cells or tissues with age. Key challenges for the field involve the development of better tools to resolve information on the NAD+ content of specific cells and subcellular compartments as well as determining the threshold levels at which NAD+ depletion triggers physiological consequences in different tissues. Understanding how NAD+ metabolism changes with age in humans may ultimately allow the design of more targeted strategies to maintain its availability, such as inhibition of key consumers in specific tissues or direct delivery of precursors to sites of deficiency. In the meantime, human clinical trials with oral supplements are poised to provide some of the first direct evidence as to whether increasing NAD+ availability can impact human physiology. Thus, it is an exciting time for NAD+ research, with much remaining to be learned in terms of both basic biology and potential therapeutic applications.
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Affiliation(s)
- Melanie R McReynolds
- Lewis-Sigler Institute for Integrative Genomics, Department of Chemistry, Princeton University, Princeton, NJ, United States of America
| | - Karthikeyani Chellappa
- Department of Physiology, Institute for Diabetes, Obesity, and Metabolism, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States of America
| | - Joseph A Baur
- Department of Physiology, Institute for Diabetes, Obesity, and Metabolism, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States of America.
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Tsuboshima K, Urakawa S, Takamoto K, Taguchi T, Matsuda T, Sakai S, Mizumura K, Ono T, Nishijo H. Distinct effects of thermal treatments after lengthening contraction on mechanical hyperalgesia and exercise-induced physiological changes in rat muscle. J Appl Physiol (1985) 2020; 128:296-306. [PMID: 31999528 DOI: 10.1152/japplphysiol.00355.2019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Delayed-onset muscle soreness (DOMS) is a common but displeasing event induced by excessive muscle use or unaccustomed exercise and characterized by tenderness and movement-related pain in the exercised muscle. Thermal therapies, either icing or heating applied to muscles immediately after exercise, have been used as therapeutic interventions for DOMS. However, the mechanisms of their analgesic effects, and physiological and metabolic changes in the muscle during thermal therapy, remain unclear. In the present study, we investigated the effects of both thermal treatments on mechanical hyperalgesia of DOMS and physiological and muscle metabolite changes using the rat DOMS model induced by lengthening contraction (LC) to the gastrocnemius muscle. Heating treatment just after LC induced analgesic effects, while rats with icing treatment showed mechanical hyperalgesia similar to that of the LC group. Furthermore, increased physiological responses (e.g., muscle temperature and blood flow) following the LC were significantly kept high only in the rats with heating treatment. In addition, heating treatment increased metabolites involved in the improvement of blood flow and oxidative metabolisms in the exercised muscle. The results indicated that heating treatment just after LC has analgesic effects on DOMS, which might be mediated partly through the improvement of muscle oxidative metabolisms by changes in metabolites and elevated physiological responses.NEW & NOTEWORTHY Physiological effects of thermal therapy in the muscle and its mechanisms of analgesic effects remain unclear. The results indicated that heating, but not icing, treatment just after lengthening contractions induced analgesic effects in the rat muscle. Increases in hemodynamics, muscle temperature, and metabolites such as nicotinamide were more prominent in heating treatment, consistent with improvement of muscle oxidative metabolisms, which might reduce chemical factors to induce mechanical hyperalgesia.
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Affiliation(s)
- Katsuyuki Tsuboshima
- Department of System Emotional Science, Faculty of Medicine, University of Toyama, Toyama, Japan
| | - Susumu Urakawa
- Department of System Emotional Science, Faculty of Medicine, University of Toyama, Toyama, Japan.,Department of Musculoskeletal Functional Research and Regeneration, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kouichi Takamoto
- Department of System Emotional Science, Faculty of Medicine, University of Toyama, Toyama, Japan
| | - Toru Taguchi
- Department of System Emotional Science, Faculty of Medicine, University of Toyama, Toyama, Japan.,Department of Physical Therapy, Faculty of Rehabilitation, Niigata University of Health and Welfare, Niigata, Japan
| | - Teru Matsuda
- Department of Physical Therapy, College of Life and Health Sciences, Chubu University, Kasugai, Japan
| | - Shigekazu Sakai
- Department of System Emotional Science, Faculty of Medicine, University of Toyama, Toyama, Japan
| | - Kazue Mizumura
- Department of Physical Therapy, College of Life and Health Sciences, Chubu University, Kasugai, Japan
| | - Taketoshi Ono
- Department of System Emotional Science, Faculty of Medicine, University of Toyama, Toyama, Japan
| | - Hisao Nishijo
- Department of System Emotional Science, Faculty of Medicine, University of Toyama, Toyama, Japan
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The effect of NAMPT deletion in projection neurons on the function and structure of neuromuscular junction (NMJ) in mice. Sci Rep 2020; 10:99. [PMID: 31919382 PMCID: PMC6952356 DOI: 10.1038/s41598-019-57085-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 12/20/2019] [Indexed: 12/14/2022] Open
Abstract
Nicotinamide adenine dinucleotide (NAD+) plays a critical role in energy metabolism and bioenergetic homeostasis. Most NAD+ in mammalian cells is synthesized via the NAD+ salvage pathway, where nicotinamide phosphoribosyltransferase (NAMPT) is the rate-limiting enzyme, converting nicotinamide into nicotinamide mononucleotide (NMN). Using a Thy1-Nampt−/− projection neuron conditional knockout (cKO) mouse, we studied the impact of NAMPT on synaptic vesicle cycling in the neuromuscular junction (NMJ), end-plate structure of NMJs and muscle contractility of semitendinosus muscles. Loss of NAMPT impaired synaptic vesicle endocytosis/exocytosis in the NMJs. The cKO mice also had motor endplates with significantly reduced area and thickness. When the cKO mice were treated with NMN, vesicle endocytosis/exocytosis was improved and endplate morphology was restored. Electrical stimulation induced muscle contraction was significantly impacted in the cKO mice in a frequency dependent manner. The cKO mice were unresponsive to high frequency stimulation (100 Hz), while the NMN-treated cKO mice responded similarly to the control mice. Transmission electron microscopy (TEM) revealed sarcomere misalignment and changes to mitochondrial morphology in the cKO mice, with NMN treatment restoring sarcomere alignment but not mitochondrial morphology. This study demonstrates that neuronal NAMPT is important for pre-/post-synaptic NMJ function, and maintaining skeletal muscular function and structure.
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Sarcolipin Signaling Promotes Mitochondrial Biogenesis and Oxidative Metabolism in Skeletal Muscle. Cell Rep 2019; 24:2919-2931. [PMID: 30208317 PMCID: PMC6481681 DOI: 10.1016/j.celrep.2018.08.036] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Revised: 04/30/2018] [Accepted: 08/13/2018] [Indexed: 12/19/2022] Open
Abstract
The major objective of this study was to understand the molecular basis of how sarcolipin uncoupling of SERCA regulates muscle oxidative metabolism. Using genetically engineered sarcolipin (SLN) mouse models and primary muscle cells, we demonstrate that SLN plays a crucial role in mitochondrial biogenesis and oxidative metabolism in muscle. Loss of SLN severely compromised muscle oxidative capacity without affecting fiber-type composition. Mice overexpressing SLN in fast-twitch glycolytic muscle reprogrammed mitochondrial phenotype, increasing fat utilization and protecting against high-fat dietinduced lipotoxicity. We show that SLN affects cytosolic Ca2+ transients and activates the Ca2+/ calmodulin-dependent protein kinase II (CamKII) and PGC1α axis to increase mitochondrial biogenesis and oxidative metabolism. These studies provide a fundamental framework for understanding the role of sarcoplasmic reticulum (SR)-Ca2+ cycling as an important factor in mitochondrial health and muscle metabolism. We propose that SLN can be targeted to enhance energy expenditure in muscle and prevent metabolic disease. Maurya et al. report that sarcolipin, a regulator of the SERCA pump, promotes mitochondrial biogenesis and oxidative phenotype in muscle. Loss of SLN decreases fat oxidation, whereas overexpression of SLN in muscle provides resistance against diet-induced lipotoxicity. By increasing cytosolic Ca2+ transients, SLN activates the CamKII-PGC1α signaling pathway to promote mitochondrial biogenesis.
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Connell NJ, Houtkooper RH, Schrauwen P. NAD + metabolism as a target for metabolic health: have we found the silver bullet? Diabetologia 2019; 62:888-899. [PMID: 30772929 PMCID: PMC6509089 DOI: 10.1007/s00125-019-4831-3] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 12/28/2018] [Indexed: 12/02/2022]
Abstract
NAD+ has gone in and out of fashion within the scientific community a number of times since its discovery in the early 1900s. Over the last decade, NAD+ has emerged as a potential target for combatting metabolic disturbances and the mitochondrial dysfunction that is mediated through sirtuin (SIRT) enzymes. The beneficial metabolic effects of the NAD+/SIRT axis have triggered an increased interest in NAD+ as an enhancer of energy metabolism. As a result, a myriad of publications have focused on NAD+ metabolism, with the majority of the work having been performed using in vitro models, and in vivo work largely consisting of interventions in Caenorhabditis elegans and rodents. Human intervention trials, on the other hand, are scarce. The aim of this review is to provide an overview of the state-of-the-art on influencing NAD+ metabolism in humans and to set the stage for what the future of this exciting field may hold.
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Affiliation(s)
- Niels J Connell
- Department of Nutrition and Movement Sciences, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University, Universiteitssingel 50, P.O. Box 616, 6200 MD, Maastricht, the Netherlands
| | - Riekelt H Houtkooper
- Laboratory Genetic Metabolic Diseases, Amsterdam Gastroenterology and Metabolism, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
| | - Patrick Schrauwen
- Department of Nutrition and Movement Sciences, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University, Universiteitssingel 50, P.O. Box 616, 6200 MD, Maastricht, the Netherlands.
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Okabe K, Yaku K, Tobe K, Nakagawa T. Implications of altered NAD metabolism in metabolic disorders. J Biomed Sci 2019; 26:34. [PMID: 31078136 PMCID: PMC6511662 DOI: 10.1186/s12929-019-0527-8] [Citation(s) in RCA: 133] [Impact Index Per Article: 26.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 04/25/2019] [Indexed: 12/15/2022] Open
Abstract
Nicotinamide adenine dinucleotide (NAD) is an important coenzyme that participates in various energy metabolism pathways, including glycolysis, β-oxidation, and oxidative phosphorylation. Besides, it is a required cofactor for post-translational modifications such as ADP-ribosylation and deacetylation by poly (ADP-ribose) polymerases (PARPs) and sirtuins, respectively. Thus, NAD regulates energy metabolism, DNA damage repair, gene expression, and stress response through these enzymes. Numerous studies have shown that NAD levels decrease with aging and under disturbed nutrient conditions, such as obesity. Additionally, a decline in NAD levels is closely related to the development of various metabolic disorders, including diabetes and fatty liver disease. In addition, many studies have revealed that administration of NAD precursors, such as nicotinamide mononucleotide (NMN) and nicotinamide riboside (NR), efficiently increase NAD levels in various tissues and prevent such metabolic diseases. These NAD precursors are contained in natural foods, such as cow milk, vegetables, and meats. Therefore, altered NAD metabolism can be a practical target for nutritional intervention. Recently, several human clinical trials using NAD precursors have been conducted to investigate the safety, pharmacokinetics, and efficacy against metabolic disorders such as glucose intolerance. In this review, we summarize current knowledge on the implications of NAD metabolism in metabolic diseases and discuss the outcomes of recent human clinical trials.
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Affiliation(s)
- Keisuke Okabe
- Department of Metabolism and Nutrition, Graduate School of Medicine and Pharmaceutical Science for Research, University of Toyama, 2630 Sugitani, Toyama, Toyama 930-0194 Japan
- First Department of Internal Medicine, Graduate School of Medicine and Pharmaceutical Science for Research, University of Toyama, Toyama, 930-0194 Japan
| | - Keisuke Yaku
- Department of Metabolism and Nutrition, Graduate School of Medicine and Pharmaceutical Science for Research, University of Toyama, 2630 Sugitani, Toyama, Toyama 930-0194 Japan
| | - Kazuyuki Tobe
- First Department of Internal Medicine, Graduate School of Medicine and Pharmaceutical Science for Research, University of Toyama, Toyama, 930-0194 Japan
| | - Takashi Nakagawa
- Department of Metabolism and Nutrition, Graduate School of Medicine and Pharmaceutical Science for Research, University of Toyama, 2630 Sugitani, Toyama, Toyama 930-0194 Japan
- Institute of Natural Medicine, University of Toyama, Toyama, 930-0194 Japan
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Hara N, Osago H, Hiyoshi M, Kobayashi-Miura M, Tsuchiya M. Quantitative analysis of the effects of nicotinamide phosphoribosyltransferase induction on the rates of NAD+ synthesis and breakdown in mammalian cells using stable isotope-labeling combined with mass spectrometry. PLoS One 2019; 14:e0214000. [PMID: 30875389 PMCID: PMC6420012 DOI: 10.1371/journal.pone.0214000] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 03/05/2019] [Indexed: 12/11/2022] Open
Abstract
NAD+ is mainly synthesized from nicotinamide (Nam) by the rate-limiting enzyme Nam phosphoribosyltransferase (Nampt) and degraded to Nam by NAD+-degrading enzymes in mammals. Numerous studies report that tissue NAD+ levels decrease during aging and age-related diseases and suggest that NAD+ replenishment promotes healthy aging. Although increased expression of Nampt might be a promising intervention for healthy aging, forced expression of Nampt gene, inducing more than 10-fold increases in the enzyme protein level, has been reported to elevate NAD+ levels only 40-60% in mammalian cells. Mechanisms underlying the limited increases in NAD+ levels remain to be determined. Here we show that Nampt is inhibited in cells and that enhanced expression of Nampt activates NAD+ breakdown. Combined with the measurement of each cell's volume, we determined absolute values (μM/h) of the rates of NAD+ synthesis (RS) and breakdown (RB) using a flux assay with a 2H (D)-labeled Nam, together with the absolute NAD+ concentrations in various mammalian cells including primary cultured cardiomyocytes under the physiological conditions and investigated the relations among total cellular Nampt activity, RS, RB, and the NAD+ concentration. NAD+ concentration was maintained within a narrow range (400-700 μM) in the cells. RS was much smaller than the total Nampt activity, indicating that NAD+ synthesis from Nam in the cells is suppressed. Forced expression of Nampt leading to 6-fold increase in total Nampt activity induced only a 1.6-fold increase in cellular NAD+ concentration. Under the conditions, RS increased by 2-fold, while 2-fold increase in RB was also observed. The small increase in cellular NAD+ concentration is likely due to both inhibited increase in the NAD+ synthesis and the activation of its breakdown. Our findings suggest that cellular NAD+ concentrations do not vary dramatically by the physiological fluctuation of Nampt expression and show the tight link between the NAD+ synthesis and its breakdown.
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Affiliation(s)
- Nobumasa Hara
- Department of Biochemistry, Shimane University Faculty of Medicine, Izumo, Shimane, Japan
- * E-mail:
| | - Harumi Osago
- Department of Biochemistry, Shimane University Faculty of Medicine, Izumo, Shimane, Japan
| | - Mineyoshi Hiyoshi
- Department of Biochemistry, Shimane University Faculty of Medicine, Izumo, Shimane, Japan
| | - Mikiko Kobayashi-Miura
- Department of Biochemistry, Shimane University Faculty of Medicine, Izumo, Shimane, Japan
| | - Mikako Tsuchiya
- Department of Biochemistry, Shimane University Faculty of Medicine, Izumo, Shimane, Japan
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Brouwers B, Stephens NA, Costford SR, Hopf ME, Ayala JE, Yi F, Xie H, Li JL, Gardell SJ, Sparks LM, Smith SR. Elevated Nicotinamide Phosphoribosyl Transferase in Skeletal Muscle Augments Exercise Performance and Mitochondrial Respiratory Capacity Following Exercise Training. Front Physiol 2018; 9:704. [PMID: 29942262 PMCID: PMC6004371 DOI: 10.3389/fphys.2018.00704] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 05/22/2018] [Indexed: 11/25/2022] Open
Abstract
Mice overexpressing NAMPT in skeletal muscle (NamptTg mice) develop higher exercise endurance and maximal aerobic capacity (VO2max) following voluntary exercise training compared to wild-type (WT) mice. Here, we aimed to investigate the mechanisms underlying by determining skeletal muscle mitochondrial respiratory capacity in NamptTg and WT mice. Body weight and body composition, tissue weight (gastrocnemius, quadriceps, soleus, heart, liver, and epididymal white adipose tissue), skeletal muscle and liver glycogen content, VO2max, skeletal muscle mitochondrial respiratory capacity (measured by high-resolution respirometry), skeletal muscle gene expression (measured by microarray and qPCR), and skeletal muscle protein content (measured by Western blot) were determined following 6 weeks of voluntary exercise training (access to running wheel) in 13-week-old male NamptTg (exercised NamptTg) mice and WT (exercised WT) mice. Daily running distance and running time during the voluntary exercise training protocol were recorded. Daily running distance (p = 0.51) and running time (p = 0.85) were not significantly different between exercised NamptTg mice and exercised WT mice. VO2max was higher in exercised NamptTg mice compared to exercised WT mice (p = 0.02). Body weight (p = 0.92), fat mass (p = 0.49), lean mass (p = 0.91), tissue weight (all p > 0.05), and skeletal muscle (p = 0.72) and liver (p = 0.94) glycogen content were not significantly different between exercised NamptTg mice and exercised WT mice. Complex I oxidative phosphorylation (OXPHOS) respiratory capacity supported by fatty acid substrates (p < 0.01), maximal (complex I+II) OXPHOS respiratory capacity supported by glycolytic (p = 0.02) and fatty acid (p < 0.01) substrates, and maximal uncoupled respiratory capacity supported by fatty acid substrates (p < 0.01) was higher in exercised NamptTg mice compared to exercised WT mice. Transcriptomic analyses revealed differential expression for genes involved in oxidative metabolism in exercised NamptTg mice compared to exercised WT mice, specifically, enrichment for the gene set related to the SIRT3-mediated signaling pathway. SIRT3 protein content correlated with NAMPT protein content (r = 0.61, p = 0.04). In conclusion, NamptTg mice develop higher exercise capacity following voluntary exercise training compared to WT mice, which is paralleled by higher mitochondrial respiratory capacity in skeletal muscle. The changes in SIRT3 targets suggest that these effects are due to remodeling of mitochondrial function.
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Affiliation(s)
- Bram Brouwers
- Translational Research Institute for Metabolism and Diabetes, Florida Hospital, Orlando, FL, United States
| | - Natalie A Stephens
- Translational Research Institute for Metabolism and Diabetes, Florida Hospital, Orlando, FL, United States
| | - Sheila R Costford
- Sanford Burnham Prebys Medical Discovery Institute, Orlando, FL, United States
| | - Meghan E Hopf
- Sanford Burnham Prebys Medical Discovery Institute, Orlando, FL, United States
| | - Julio E Ayala
- Sanford Burnham Prebys Medical Discovery Institute, Orlando, FL, United States
| | - Fanchao Yi
- Translational Research Institute for Metabolism and Diabetes, Florida Hospital, Orlando, FL, United States
| | - Hui Xie
- Translational Research Institute for Metabolism and Diabetes, Florida Hospital, Orlando, FL, United States
| | - Jian-Liang Li
- Sanford Burnham Prebys Medical Discovery Institute, Orlando, FL, United States
| | - Stephen J Gardell
- Sanford Burnham Prebys Medical Discovery Institute, Orlando, FL, United States
| | - Lauren M Sparks
- Translational Research Institute for Metabolism and Diabetes, Florida Hospital, Orlando, FL, United States.,Sanford Burnham Prebys Medical Discovery Institute, Orlando, FL, United States
| | - Steven R Smith
- Translational Research Institute for Metabolism and Diabetes, Florida Hospital, Orlando, FL, United States.,Sanford Burnham Prebys Medical Discovery Institute, Orlando, FL, United States
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Nielsen KN, Peics J, Ma T, Karavaeva I, Dall M, Chubanava S, Basse AL, Dmytriyeva O, Treebak JT, Gerhart-Hines Z. NAMPT-mediated NAD + biosynthesis is indispensable for adipose tissue plasticity and development of obesity. Mol Metab 2018; 11:178-188. [PMID: 29551635 PMCID: PMC6001355 DOI: 10.1016/j.molmet.2018.02.014] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 02/21/2018] [Accepted: 02/26/2018] [Indexed: 12/11/2022] Open
Abstract
Objective The ability of adipose tissue to expand and contract in response to fluctuations in nutrient availability is essential for the maintenance of whole-body metabolic homeostasis. Given the nutrient scarcity that mammals faced for millions of years, programs involved in this adipose plasticity were likely evolved to be highly efficient in promoting lipid storage. Ironically, this previously advantageous feature may now represent a metabolic liability given the caloric excess of modern society. We speculate that nicotinamide adenine dinucleotide (NAD+) biosynthesis exemplifies this concept. Indeed NAD+/NADH metabolism in fat tissue has been previously linked with obesity, yet whether it plays a causal role in diet-induced adiposity is unknown. Here we investigated how the NAD+ biosynthetic enzyme nicotinamide phosphoribosyltransferase (NAMPT) supports adipose plasticity and the pathological progression to obesity. Methods We utilized a newly generated Nampt loss-of-function model to investigate the tissue-specific and systemic metabolic consequences of adipose NAD+ deficiency. Energy expenditure, glycemic control, tissue structure, and gene expression were assessed in the contexts of a high dietary fat burden as well as the transition back to normal chow diet. Results Fat-specific Nampt knockout (FANKO) mice were completely resistant to high fat diet (HFD)-induced obesity. This was driven in part by reduced food intake. Furthermore, HFD-fed FANKO mice were unable to undergo healthy expansion of adipose tissue mass, and adipose depots were rendered fibrotic with markedly reduced mitochondrial respiratory capacity. Yet, surprisingly, HFD-fed FANKO mice exhibited improved glucose tolerance compared to control littermates. Removing the HFD burden largely reversed adipose fibrosis and dysfunction in FANKO animals whereas the improved glucose tolerance persisted. Conclusions These findings indicate that adipose NAMPT plays an essential role in handling dietary lipid to modulate fat tissue plasticity, food intake, and systemic glucose homeostasis. Fat-specific Nampt knockout (FANKO) does not alter body composition on chow diet. NAMPT is essential for adipose expansion and weight gain from high dietary fat. Loss of adipose NAD+ decreases food intake and improves glucose tolerance. High fat diet-induced metabolic dysfunction in FANKO mice is reversible.
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Affiliation(s)
- Karen Nørgaard Nielsen
- Section for Metabolic Receptology, Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, 2200 Copenhagen, Denmark; Department of Biomedical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Julia Peics
- Section for Metabolic Receptology, Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Tao Ma
- Section for Metabolic Receptology, Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, 2200 Copenhagen, Denmark; Department of Biomedical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Iuliia Karavaeva
- Section for Metabolic Receptology, Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, 2200 Copenhagen, Denmark; Department of Biomedical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Morten Dall
- Section for Integrative Physiology, Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Sabina Chubanava
- Section for Integrative Physiology, Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Astrid L Basse
- Section for Integrative Physiology, Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Oksana Dmytriyeva
- Laboratory of Neural Plasticity, Institute of Neuroscience, University of Copenhagen, 2200 Copenhagen, Denmark; Research Laboratory for Stereology and Neuroscience, Bispebjerg-Frederiksberg Hospital, Copenhagen University Hospital, 2400 Copenhagen, Denmark
| | - Jonas T Treebak
- Section for Integrative Physiology, Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Zachary Gerhart-Hines
- Section for Metabolic Receptology, Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, 2200 Copenhagen, Denmark; Department of Biomedical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark.
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