Journal article
Nicotinamide riboside kinases display redundancy in mediating nicotinamide mononucleotide and nicotinamide riboside metabolism in skeletal muscle cells
Molecular Metabolism, Vol.6(8), pp.819-832
08/2017
DOI: 10.1016/j.molmet.2017.05.011
PMCID: PMC5518663
PMID: 28752046
Abstract
Augmenting nicotinamide adenine dinucleotide (NAD+) availability may protect skeletal muscle from age-related metabolic decline. Dietary supplementation of NAD+ precursors nicotinamide mononucleotide (NMN) and nicotinamide riboside (NR) appear efficacious in elevating muscle NAD+. Here we sought to identify the pathways skeletal muscle cells utilize to synthesize NAD+ from NMN and NR and provide insight into mechanisms of muscle metabolic homeostasis. We exploited expression profiling of muscle NAD+ biosynthetic pathways, single and double nicotinamide riboside kinase 1/2 (NRK1/2) loss-of-function mice, and pharmacological inhibition of muscle NAD+ recycling to evaluate NMN and NR utilization. Skeletal muscle cells primarily rely on nicotinamide phosphoribosyltransferase (NAMPT), NRK1, and NRK2 for salvage biosynthesis of NAD+. NAMPT inhibition depletes muscle NAD+ availability and can be rescued by NR and NMN as the preferred precursors for elevating muscle cell NAD+ in a pathway that depends on NRK1 and NRK2. Nrk2 knockout mice develop normally and show subtle alterations to their NAD+ metabolome and expression of related genes. NRK1, NRK2, and double KO myotubes revealed redundancy in the NRK dependent metabolism of NR to NAD+. Significantly, these models revealed that NMN supplementation is also dependent upon NRK activity to enhance NAD+ availability. These results identify skeletal muscle cells as requiring NAMPT to maintain NAD+ availability and reveal that NRK1 and 2 display overlapping function in salvage of exogenous NR and NMN to augment intracellular NAD+ availability. •NRK1 and NRK2 are expressed in skeletal muscle and display redundancy in converting NR and NMN to NAD+.•NRK1 and NRK2 are dispensable for maintaining basal skeletal muscle cell NAD+.•Exogenous NMN salvage to NAD+ is NRK dependent.
Details
- Title: Subtitle
- Nicotinamide riboside kinases display redundancy in mediating nicotinamide mononucleotide and nicotinamide riboside metabolism in skeletal muscle cells
- Creators
- Rachel S Fletcher - Institute of Metabolism and Systems Research, 2nd Floor IBR Tower, University of Birmingham, Birmingham, B15 2TT, UKJoanna Ratajczak - Nestlé Institute of Health Sciences (NIHS), Lausanne, CH-1015, SwitzerlandCraig L Doig - Institute of Metabolism and Systems Research, 2nd Floor IBR Tower, University of Birmingham, Birmingham, B15 2TT, UKLucy A Oakey - Centre for Endocrinology, Diabetes and Metabolism, Birmingham Health Partners, Birmingham, B15 2TH, UKRebecca Callingham - Section of Cell Biology and Functional Genomics, Department of Medicine, Imperial College London, London, W12 0NN, UKGabriella Da Silva Xavier - Section of Cell Biology and Functional Genomics, Department of Medicine, Imperial College London, London, W12 0NN, UKAntje Garten - Institute of Metabolism and Systems Research, 2nd Floor IBR Tower, University of Birmingham, Birmingham, B15 2TT, UKYasir S Elhassan - Institute of Metabolism and Systems Research, 2nd Floor IBR Tower, University of Birmingham, Birmingham, B15 2TT, UKPhilip Redpath - Mitchell Cancer Institute, 1660 Springhill Avenue, Mobile, AL, 36604, USAMarie E Migaud - Mitchell Cancer Institute, 1660 Springhill Avenue, Mobile, AL, 36604, USAAndrew Philp - School of Sport Exercise and Rehabilitation Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UKCharles Brenner - Department of Biochemistry, Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USACarles Canto - Nestlé Institute of Health Sciences (NIHS), Lausanne, CH-1015, SwitzerlandGareth G Lavery - Institute of Metabolism and Systems Research, 2nd Floor IBR Tower, University of Birmingham, Birmingham, B15 2TT, UK
- Resource Type
- Journal article
- Publication Details
- Molecular Metabolism, Vol.6(8), pp.819-832
- DOI
- 10.1016/j.molmet.2017.05.011
- PMID
- 28752046
- PMCID
- PMC5518663
- NLM abbreviation
- Mol Metab
- ISSN
- 2212-8778
- eISSN
- 2212-8778
- Publisher
- Elsevier GmbH
- Grant note
- name: Wellcome Trust Senior Fellowship, award: GGL-104612/Z/14/Z; name: Marie Sklodowska-Curie, award: AG-No 705869; name: Nestlé Institute of Health Sciences; name: Roy J. Carver Trust; DOI: 10.13039/100000002, name: National Institutes of Health, award: CB-R21-AA022371; name: Medical Research Council; name: University of Birmingham Dynamic Investment Fund
- Language
- English
- Date published
- 08/2017
- Academic Unit
- Biochemistry and Molecular Biology; Internal Medicine
- Record Identifier
- 9983788597102771
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