Cited by 1,162Sirtuins and Resveratrol in MedicinePancreatic function and diabetesCalcium signaling and nucleotide metabolism

SIRT4 Inhibits Glutamate Dehydrogenase and Opposes the Effects of Calorie Restriction in Pancreatic β Cells

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Haigis, Marcia C., Mostoslavsky, Raul, Haigis, Kevin M., Fahie, Kamau, Christodoulou, Danos C., Murphy, Andrew J., Valenzuela, David M., Yancopoulos, George D. +7 more·2006·Cell

Abstract

Sir2 is an NAD-dependent deacetylase that connects metabolism with longevity in yeast, flies, and worms. Mammals have seven Sir2 homologs (SIRT1-7). We show that SIRT4 is a mitochondrial enzyme that uses NAD to ADP-ribosylate and downregulate glutamate dehydrogenase (GDH) activity. GDH is known to promote the metabolism of glutamate and glutamine, generating ATP, which promotes insulin secretion. Loss of SIRT4 in insulinoma cells activates GDH, thereby upregulating amino acid-stimulated insulin secretion. A similar effect is observed in pancreatic beta cells from mice deficient in SIRT4 or on the dietary regimen of calorie restriction (CR). Furthermore, GDH from SIRT4-deficient or CR mice is insensitive to phosphodiesterase, an enzyme that cleaves ADP-ribose, suggesting the absence of ADP-ribosylation. These results indicate that SIRT4 functions in beta cell mitochondria to repress the activity of GDH by ADP-ribosylation, thereby downregulating insulin secretion in response to amino acids, effects that are alleviated during CR.

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Crossref · 10.1016/j.cell.2006.06.057

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  • SIRT4 and SIRT6 also function as ADP-ribosyltransferases.

    “SIRT4 and SIRT6 also function as ADP-ribosyltransferases, indicating that sirtuins contribute to cell regulation also through mechanisms beyond modulation of protein acetylation, which require further investigation17,18.”
  • GLUD1 is inhibited by SIRT4 and by acetylation that can be reversed by SIRT3.

    “GLUD1 is inhibited by SIRT4 ((Haigis et al. 2006)) and by acetylation which can be reversed by SIRT3 ((Schlicker et al. 2008)).”
  • ADP-ribosylation of glutamate dehydrogenase limits TCA cycle anaplerosis and NAD[P]H generation.

    “ADP-ribosylation of glutamate dehydrogenase limits TCA cycle anaplerosis and NAD[P]H generation ((Haigis et al. 2006)), and SIRT4’s delipoylation activity ((Mathias et al. 2014)) also suggests the potential for inhibitory delipoylation of the downstream oxoglutarate dehydrogenase complex, which functions similarly to pyruvate dehydrogenase (discussed above).”
  • SIRT4 inhibits GLUD1 function in pancreatic β cells.

    “SIRT4 inhibits GLUD1 function in pancreatic β cells ((Haigis et al. 2006)), raising the possibility that mitochondrial sirtuins might oppose each other to fine tune the activity of urea cycle via modulating different post-translational modifications on various enzymes in this pathway.”
  • In mammals, SIRT1, SIRT6, and SIRT7 are nuclear proteins; SIRT1 is found mainly in the cytoplasm; and SIRT3, SIRT4, and SIRT5 are found in the mitochondria.

    “In mammals, this family has several members of which SIRT1, SIRT6, and SIRT7 are nuclear proteins; SIRT1 is found mainly in the cytoplasm; and the SIRT3, SIRT4, and SIRT5 are found in the mitochondria (165, 295, 389).”

    From Redox regulation of mitochondrial function (2012) · cites this paper as [165]

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Authors
Haigis, M. C., Mostoslavsky, R., Haigis, K. M., Fahie, K., Christodoulou, D. C., Murphy, A. J., Valenzuela, D. M., Yancopoulos, G. D., Karow, M., Blander, G., Wolberger, C., Prolla, T. A., Weindruch, R., Alt, F. W., & Guarente, L.
Affiliations
  • Massachusetts Institute of Technology (US)
  • Johns Hopkins University (US)
  • Regeneron (United States) (US)
  • Howard Hughes Medical Institute (US)
  • University of Wisconsin–Madison (US)
Corresponding author
Guarente, Leonard
Venue
Cell
Publisher
Elsevier BV
Published
2006-09
Volume
126
Issue
5
Pages
941-954
ISSN
0092-8674 (ISSN-L)
OpenAlex
W2056673958
Cited by
1,162
References
56
Citations by year
2026: 29 · 2025: 48 · 2024: 52 · 2023: 45 · 2022: 49 · 2021: 70 · 2020: 60 · 2019: 53 · 2018: 77 · 2017: 62 · 2016: 79 · 2015: 62 · 2014: 65 · 2013: 83 · 2012: 68
FWCI
21.36
Type
journal article
Language
en
Open access
Locations
  • Cell (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institutes of Health
Topics
  • Health Sciences › Medicine › Geriatrics and Gerontology › Sirtuins and Resveratrol in Medicine
  • Health Sciences › Medicine › Surgery › Pancreatic function and diabetes
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Physiology › Calcium signaling and nucleotide metabolism
Keywords
SIRT4, glutamate dehydrogenase, caloric restriction, pancreatic beta cells, insulin secretion, ADP-ribosylation, mitochondrial metabolism, insulinoma cells, phosphodiesterase, glutamine metabolism
MeSH terms
Adenosine Diphosphate Ribose, Amino Acids, Animals, Glucose, Glutamate Dehydrogenase, Glutamine, Humans, Insulin, Islets of Langerhans, Mitochondria, NAD, Protein Processing, Post-Translational, Transfection, Down-Regulation, Mice, Knockout, Caloric Restriction, RNA, Small Interfering, Sirtuins, Cell Line, Tumor, Insulin-Secreting Cells, Mice, Sirtuin 1

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