Cited by 1,010Sirtuins and Resveratrol in MedicineBiochemical and Molecular ResearchNuclear Structure and Function

The NAD Biosynthesis Pathway Mediated by Nicotinamide Phosphoribosyltransferase Regulates Sir2 Activity in Mammalian Cells

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Revollo, Javier R., Grimm, Andrew A., Imai, Shin-ichiro·2004·Journal of Biological Chemistry

Abstract

Recent studies have revealed new roles for NAD and its derivatives in transcriptional regulation. The evolutionarily conserved Sir2 protein family requires NAD for its deacetylase activity and regulates a variety of biological processes, such as stress response, differentiation, metabolism, and aging. Despite its absolute requirement for NAD, the regulation of Sir2 function by NAD biosynthesis pathways is poorly understood in mammals. In this study, we determined the kinetics of the NAD biosynthesis mediated by nicotinamide phosphoribosyltransferase (Nampt) and nicotinamide/nicotinic acid mononucleotide adenylyltransferase (Nmnat), and we examined its effects on the transcriptional regulatory function of the mouse Sir2 ortholog, Sir2alpha, in mouse fibroblasts. We found that Nampt was the rate-limiting component in this mammalian NAD biosynthesis pathway. Increased dosage of Nampt, but not Nmnat, increased the total cellular NAD level and enhanced the transcriptional regulatory activity of the catalytic domain of Sir2alpha recruited onto a reporter gene in mouse fibroblasts. Gene expression profiling with oligonucleotide microarrays also demonstrated a significant correlation between the expression profiles of Nampt- and Sir2alpha-overexpressing cells. These findings suggest that NAD biosynthesis mediated by Nampt regulates the function of Sir2alpha and thereby plays an important role in controlling various biological events in mammals.

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  1. Downes, M., Ordentlich, P., Kao, H. Y., Alvarez, J. G., and Evans, R. M. (2000) Proc. Natl. Acad. Sci. U. S. A. 97, 10330 -10335
  2. Nau, G. J., Richmond, J. F., Schlesinger, A., Jennings, E. G., Lander, E. S., and Young, R. A. (2002) Proc. Natl. Acad. Sci. U. S. A. 99, 1503-1508

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Authors
Revollo, J. R., Grimm, A. A., & Imai, S.-I.
Affiliations
Washington University in St. Louis (US)
Corresponding author
Imai, Shin-ichiro
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2004-12
Volume
279
Issue
49
Pages
50754-50763
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2108536847
Cited by
1,010
References
61
Citations by year
2026: 31 · 2025: 34 · 2024: 54 · 2023: 43 · 2022: 52 · 2021: 49 · 2020: 57 · 2019: 51 · 2018: 56 · 2017: 62 · 2016: 48 · 2015: 51 · 2014: 41 · 2013: 58 · 2012: 55
FWCI
9.04
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • Ellison Medical Foundation
  • Leukemia and Lymphoma Society
Topics
  • Health Sciences › Medicine › Geriatrics and Gerontology › Sirtuins and Resveratrol in Medicine
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Biochemical and Molecular Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nuclear Structure and Function
Keywords
NAD biosynthesis, visfatin, nicotinamide mononucleotide adenylyltransferase, rate-limiting enzyme, mouse fibroblasts, gene expression profiling, aging
MeSH terms
Animals, Cell Differentiation, Chromatography, High Pressure Liquid, Dose-Response Relationship, Drug, Fibroblasts, Fungal Proteins, Kinetics, Luciferases, NAD, Nicotinamide-Nucleotide Adenylyltransferase, Pentosyltransferases, Phylogeny, Recombinant Proteins, Saccharomyces cerevisiae, Transcription, Genetic, Blotting, Western, Gene Library, Cytokines, Genes, Reporter, DNA, Complementary, Reverse Transcriptase Polymerase Chain Reaction, Catalytic Domain, Oligonucleotide Array Sequence Analysis, Sirtuins, NIH 3T3 Cells, Mice, Nicotinamide Phosphoribosyltransferase, Sirtuin 1

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