Cited by 913Sirtuins and Resveratrol in MedicinePancreatic function and diabetesAdipose Tissue and Metabolism

Nampt/PBEF/Visfatin Regulates Insulin Secretion in β Cells as a Systemic NAD Biosynthetic Enzyme

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Revollo, Javier R., Körner, Antje, Mills, Kathryn F., Satoh, Akiko, Wang, Tao, Garten, Antje, Dasgupta, Biplab, Sasaki, Yo +5 more·2007·Cell Metabolism

Abstract

Intracellular nicotinamide phosphoribosyltransferase (iNampt) is an essential enzyme in the NAD biosynthetic pathway. An extracellular form of this protein (eNampt) has been reported to act as a cytokine named PBEF or an insulin-mimetic hormone named visfatin, but its physiological relevance remains controversial. Here we show that eNampt does not exert insulin-mimetic effects in vitro or in vivo but rather exhibits robust NAD biosynthetic activity. Haplodeficiency and chemical inhibition of Nampt cause defects in NAD biosynthesis and glucose-stimulated insulin secretion in pancreatic islets in vivo and in vitro. These defects are corrected by administration of nicotinamide mononucleotide (NMN), a product of the Nampt reaction. A high concentration of NMN is present in mouse plasma, and plasma eNampt and NMN levels are reduced in Nampt heterozygous females. Our results demonstrate that Nampt-mediated systemic NAD biosynthesis is critical for beta cell function, suggesting a vital framework for the regulation of glucose homeostasis.

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Crossref · 10.1016/j.cmet.2007.09.003

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Authors
Revollo, J. R., Körner, A., Mills, K. F., Satoh, A., Wang, T., Garten, A., Dasgupta, B., Sasaki, Y., Wolberger, C., Townsend, R. R., Milbrandt, J., Kiess, W., & Imai, S.-I.
Affiliations
  • Washington University in St. Louis (US)
  • University Hospital Leipzig (DE)
  • Howard Hughes Medical Institute (US)
Corresponding author
Imai, Shin-ichiro
Venue
Cell Metabolism
Publisher
Elsevier BV
Published
2007-11
Volume
6
Issue
5
Pages
363-375
ISSN
1550-4131 (ISSN-L)
OpenAlex
W2002811789
Cited by
911
References
41
Citations by year
2026: 32 · 2025: 36 · 2024: 51 · 2023: 38 · 2022: 45 · 2021: 51 · 2020: 42 · 2019: 53 · 2018: 48 · 2017: 47 · 2016: 40 · 2015: 60 · 2014: 44 · 2013: 49 · 2012: 60
FWCI
23.56
Type
journal article
Language
en
Open access
Locations
  • Cell Metabolism (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Deutsche Forschungsgemeinschaft
  • Universität Ulm
  • National Institutes of Health (1c06rr015502-01)
  • National Institute on Aging (R01AG024150, AG024150)
  • National Institute of Diabetes and Digestive and Kidney Diseases (P30 DK-52574, DK56341, P30DK056341, P30DK052574)
  • National Institute of Neurological Disorders and Stroke (NS36358)
  • National Center for Research Resources (C06-RR-015502, P41 RR00945)
Topics
  • Health Sciences › Medicine › Geriatrics and Gerontology › Sirtuins and Resveratrol in Medicine
  • Health Sciences › Medicine › Surgery › Pancreatic function and diabetes
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
Keywords
visfatin, PBEF, NAD biosynthesis, insulin secretion, pancreatic beta cells, nicotinamide mononucleotide, glucose-stimulated insulin secretion, glucose homeostasis
MeSH terms
Animals, Adipose Tissue, Brown, Cell Differentiation, Cell Line, Female, Insulin, Islets of Langerhans, Kidney, Liver, Mice, Inbred C57BL, Myocardium, NAD, Nicotinamide Mononucleotide, Signal Transduction, Glucose Intolerance, Mice, Knockout, Immunoprecipitation, Insulin-Secreting Cells, Mice, Nicotinamide Phosphoribosyltransferase

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