Intracellular α-ketoglutarate maintains the pluripotency of embryonic stem cells Journal Article

Authors: Carey, B. W.; Finley, L. W. S.; Cross, J. R.; Allis, C. D.; Thompson, C. B.
Article Title: Intracellular α-ketoglutarate maintains the pluripotency of embryonic stem cells
Abstract: The role of cellular metabolism in regulating cell proliferation and differentiation remains poorly understood. For example, most mammalian cells cannot proliferate without exogenous glutamine supplementation even though glutamine is a non-essential amino acid. Here we show that mouse embryonic stem (ES) cells grown under conditions that maintain naive pluripotency are capable of proliferation in the absence of exogenous glutamine. Despite this, ES cells consume high levels of exogenous glutamine when the metabolite is available. In comparison to more differentiated cells, naive ES cells utilize both glucose and glutamine catabolism to maintain a high level of intracellular α-ketoglutarate (α KG). Consequently, naive ES cells exhibit an elevated α KG to succinate ratio that promotes histone/DNA demethylation and maintains pluripotency. Direct manipulation of the intracellular α KG/succinate ratio is sufficient to regulate multiple chromatin modifications, including H3K27me3 and ten-eleven translocation (Tet)-dependent DNA demethylation, which contribute to the regulation of pluripotency-associated gene expression. In vitro, supplementation with cell-permeable α KG directly supports ES-cell self-renewal while cell-permeable succinate promotes differentiation. This work reveals that intracellular α KG/succinate levels can contribute to the maintenance of cellular identity and have a mechanistic role in the transcriptional and epigenetic state of stem cells. © 2015 Macmillan Publishers Limited.
Journal Title: Nature
Volume: 518
Issue: 7539
ISSN: 0028-0836
Publisher: Nature Publishing Group  
Date Published: 2015-02-19
Start Page: 413
End Page: 416
Language: English
DOI: 10.1038/nature13981
PROVIDER: scopus
PMCID: PMC4336218
PUBMED: 25487152
Notes: Export Date: 4 May 2015 -- Source: Scopus
Citation Impact
MSK Authors
  1. Justin Robert Cross
    81 Cross
  2. Lydia Whitney Stillman Finley
    32 Finley
  3. Craig Bernie Thompson
    141 Thompson