Cited by 305Biochemical Acid Research StudiesCancer, Hypoxia, and MetabolismMetabolism, Diabetes, and Cancer

Tyr phosphorylation of PDP1 toggles recruitment between ACAT1 and SIRT3 to regulate the pyruvate dehydrogenase complex

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Fan, Jun, Shan, Changliang, Kang, Hee-Bum, Elf, Shannon, Xie, Jianxin, Tucker, Meghan, Gu, Ting-Lei, Aguiar, Mike +20 more·2014·Molecular Cell

Abstract

Mitochondrial pyruvate dehydrogenase complex (PDC) is crucial for glucose homeostasis in mammalian cells. The current understanding of PDC regulation involves inhibitory serine phosphorylation of pyruvate dehydrogenase (PDH) by PDH kinase (PDK), whereas dephosphorylation of PDH by PDH phosphatase (PDP) activates PDC. Here, we report that lysine acetylation of PDHA1 and PDP1 is common in epidermal growth factor (EGF)-stimulated cells and diverse human cancer cells. K321 acetylation inhibits PDHA1 by recruiting PDK1, and K202 acetylation inhibits PDP1 by dissociating its substrate PDHA1, both of which are important in promoting glycolysis in cancer cells and consequent tumor growth. Moreover, we identified mitochondrial ACAT1 and SIRT3 as the upstream acetyltransferase and deacetylase, respectively, of PDHA1 and PDP1, while knockdown of ACAT1 attenuates tumor growth. Furthermore, Y381 phosphorylation of PDP1 dissociates SIRT3 and recruits ACAT1 to PDC. Together, hierarchical, distinct posttranslational modifications act in concert to control molecular composition of PDC and contribute to the Warburg effect.

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Authors
Fan, J., Shan, C., Kang, H.-B., Elf, S., Xie, J., Tucker, M., Gu, T.-L., Aguiar, M., Lonning, S., Chen, H., Mohammadi, M., Britton, L.-M. P., Garcia, B. A., Alečković, M., Kang, Y., Kaluz, S., Devi, N., Van Meir, E. G., Hitosugi, T., Seo, J. H., Lonial, S., Gaddh, M., Arellano, M., Khoury, H. J., Khuri, F. R., Boggon, T. J., Kang, S., & Chen, J.
Affiliations
  • Emory University (US)
  • Cell Signaling Technology (United States) (US)
  • New York University (US)
  • Princeton University (US)
  • University of Pennsylvania (US)
  • Yale University (US)
Corresponding author
Chen, Jing
Venue
Molecular Cell
Publisher
Elsevier BV
Published
2014-02
Volume
53
Issue
4
Pages
534-548
ISSN
1097-2765 (ISSN-L)
OpenAlex
W2027522444
Cited by
305
References
33
Citations by year
2026: 13 · 2025: 20 · 2024: 29 · 2023: 30 · 2022: 24 · 2021: 37 · 2020: 24 · 2019: 17 · 2018: 25 · 2017: 22 · 2016: 25 · 2015: 22 · 2014: 16
FWCI
12.56
Type
journal article
Language
en
Open access
Locations
  • Molecular Cell (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • U.S. Department of Defense (W81XWH-12-1-0217)
  • National Institutes of Health (T32 GM008602, CA140515, CA116804)
  • Georgia Cancer Coalition
  • School of Medicine, Emory University
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Biochemical Acid Research Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
Keywords
pyruvate dehydrogenase complex, PDP1, PDHA1, tyrosine phosphorylation, lysine acetylation, ACAT1, SIRT3, pyruvate dehydrogenase, Warburg effect, glycolysis, tumor growth, epidermal growth factor, post-translational modification, deacetylase
MeSH terms
Acetyl-CoA C-Acetyltransferase, Animals, Glycolysis, Humans, Lysine, Male, Mice, Nude, Mitochondria, Neoplasm Transplantation, Neoplasms, Phosphorylation, Pyruvate Dehydrogenase (Lipoamide)-Phosphatase, Tyrosine, Gene Expression Regulation, Enzymologic, Gene Expression Regulation, Neoplastic, Pyruvate Dehydrogenase (Lipoamide), Cell Line, Tumor, Cell Proliferation, Mice, Sirtuin 3

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