The DOI matches its Crossref record; 31 of the 31 references it cites were found in a registry or an index.
The Stimulation of Glycolysis by Hypoxia in Activated Monocytes Is Mediated by AMP-activated Protein Kinase and Inducible 6-Phosphofructo-2-kinase
Open accessAbstract
The activation of monocytes involves a stimulation of glycolysis, release of potent inflammatory mediators, and alterations in gene expression. All of these processes are known to be further increased under hypoxic conditions. The activated monocytes express inducible 6-phosphofructo-2-kinase (iPFK-2), which synthesizes fructose 2,6-bisphosphate, a stimulator of glycolysis. During ischemia, AMP-activated protein kinase (AMPK) activates the homologous heart 6-phosphofructo-2-kinase isoform by phosphorylating its Ser-466. Here, we studied the involvement of AMPK and iPFK-2 in the stimulation of glycolysis in activated monocytes under hypoxia. iPFK-2 was phosphorylated on the homologous serine (Ser-461) and activated by AMPK in vitro. The activation of human monocytes by lipopolysaccharide induced iPFK-2 expression and increased fructose 2,6-bisphosphate content and glycolysis. The incubation of activated monocytes with oligomycin, an inhibitor of oxidative phosphorylation, or under hypoxic conditions activated AMPK and further increased iPFK-2 activity, fructose 2,6-bisphosphate content, and glycolysis. In cultured human embryonic kidney 293 cells, the expression of a dominant-negative AMPK prevented both the activation and phosphorylation of co-transfected iPFK-2 by oligomycin. It is concluded that the stimulation of glycolysis by hypoxia in activated monocytes requires the phosphorylation and activation of iPFK-2 by AMPK.
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Cited by
AMPK: a nutrient and energy sensor that maintains energy homeostasis
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Metadata
- Authors
- Marsin, A.-S., Bouzin, C., Bertrand, L., & Hue, L.
- Venue
- Journal of Biological Chemistry
- Publisher
- Elsevier BV
- Published
- 2002-08
- Volume
- 277
- Issue
- 34
- Pages
- 30778-30783
- ISSN
- 0021-9258 (ISSN-L)
- OpenAlex
- W2024883161
- Cited by
- 379
- References
- 31
- FWCI
- 4.00
- Type
- journal article
- Language
- en
- Open access
- hybrid
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- Marsin, A.-S., Bouzin, C., Bertrand, L., & Hue, L. (2002). The Stimulation of Glycolysis by Hypoxia in Activated Monocytes Is Mediated by AMP-activated Protein Kinase and Inducible 6-Phosphofructo-2-kinase. Journal of Biological Chemistry. https://doi.org/10.1074/jbc.m205213200
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