Cited by 74Metabolism, Diabetes, and CancerCancer, Hypoxia, and MetabolismPI3K/AKT/mTOR signaling in cancer

Akt regulation of glycolysis mediates bioenergetic stability in epithelial cells

Open access
Hung, Yin P, Teragawa, Carolyn, Kosaisawe, Nont, Gillies, Taryn E, Pargett, Michael, Minguet, Marta, Distor, Kevin, Rocha-Gregg, Briana L +6 more·2017·eLife

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Abstract

Abstract Cells use multiple feedback controls to regulate metabolism in response to nutrient and signaling inputs. However, feedback creates the potential for unstable network responses. We examined how concentrations of key metabolites and signaling pathways interact to maintain homeostasis in proliferating human cells, using fluorescent reporters for AMPK activity, Akt activity, and cytosolic NADH/NAD + redox. Across various conditions including metabolic (glycolytic or mitochondrial) inhibition or cell proliferation, we observed distinct patterns of AMPK activity, including stable adaptation and highly dynamic behaviors such as periodic oscillations and irregular fluctuations, indicating a failure to reach a steady state. Fluctuations in AMPK activity, Akt activity, and cytosolic NADH/NAD + redox state were temporally linked in individual cells adapting to metabolic perturbations. By monitoring single-cell dynamics in each of these contexts, we identified PI3K/Akt regulation of glycolysis as a multifaceted modulator of single-cell metabolic dynamics that is required to maintain metabolic stability in proliferating cells.

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Authors
Hung, Y. P., Teragawa, C., Kosaisawe, N., Gillies, T. E., Pargett, M., Minguet, M., Distor, K., Rocha-Gregg, B. L., Coloff, J. L., Keibler, M. A., Stephanopoulos, G., Yellen, G., Brugge, J. S., & Albeck, J. G.
Affiliations
  • Brigham and Women's Hospital (US)
  • University of California, Davis (US)
  • Harvard University (US)
  • Massachusetts Institute of Technology (US)
Corresponding author
Albeck, John G
Venue
eLife
Published
2017-12-14
Volume
6
ISSN
2050-084X (ISSN-L)
OpenAlex
W2619981145
Cited by
74
References
63
Citations by year
2026: 4 · 2025: 13 · 2024: 6 · 2023: 7 · 2022: 8 · 2021: 15 · 2020: 11 · 2019: 7 · 2018: 2 · 2017: 1
FWCI
2.34
Type
journal article
Language
en
Open access
Locations
  • eLife (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Digital Access to Scholarship at Harvard (DASH) (Harvard University) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • DSpace@MIT (Massachusetts Institute of Technology) (submittedVersion, cc-by-nc)
  • eScholarship (California Digital Library) (submittedVersion, cc-by)
Funders
  • Congressionally Directed Medical Research Programs (W81XWH-08-1-0609)
  • National Cancer Institute (5-R01-CA105134-07)
  • National Institute of Neurological Disorders and Stroke (R01-NS055031)
  • Stuart HQ and Victoria Quan (Predoctoral Fellowship)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › PI3K/AKT/mTOR signaling in cancer
Keywords
Akt signaling, AMPK, glycolysis, metabolic homeostasis, PI3K/Akt signaling, metabolic oscillations, epithelial cells, cell proliferation, mitochondrial inhibition
MeSH terms
Cell Line, Energy Metabolism, Epithelial Cells, Gene Expression Regulation, Glycolysis, Humans, NAD, Phosphatidylinositol 3-Kinases, Cell Proliferation, Proto-Oncogene Proteins c-akt, AMP-Activated Protein Kinases

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