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Adapting glycolysis to cancer cell proliferation: the MAPK pathway focuses on PFKFB3

Juan P Bolaños1

  • 1Institute of Functional Biology and Genomics (IBFG), University of Salamanca-CSIC, Zacarias Gonzalez 2, 37007 Salamanca, Spain. jbolanos@usal.es

The Biochemical Journal
|June 4, 2013
PubMed

Insights

Mitogen-activated protein kinase-activated protein kinase 2 (MK2) up-regulates glycolysis in cancer cells by activating the enzyme 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase 3 (PFKFB3). This discovery reveals a new therapeutic target for cancer treatment.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Cancer Research

Background:

  • Cancer cells exhibit significant metabolic adaptations to support biomass production.
  • Increased glycolysis is a hallmark of cancer metabolism and a target for anticancer therapies.
  • Mitogen-activated protein kinase (MAPK) pathway components play roles in cancer cell proliferation.

Purpose of the Study:

  • To identify novel mechanisms by which cancer cells adapt metabolism for proliferation.
  • To elucidate the role of MAPK-activated protein kinase 2 (MK2) in regulating glycolysis in cancer.
  • To investigate 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase 3 (PFKFB3) as a key mediator.

Main Methods:

  • Investigated the role of MK2 in glycolysis regulation in cancer cells.
  • Analyzed the phosphorylation of specific substrate residues by MK2.
  • Assessed the impact of MK2 on PFKFB3 gene transcription and allosteric activation.

Main Results:

  • MK2 was identified as a key regulator that up-regulates glycolysis in cancer cells under stress.
  • MK2 promotes both increased gene transcription and allosteric activation of PFKFB3.
  • PFKFB3 was confirmed as a crucial enzyme in promoting glycolysis.

Conclusions:

  • MK2 coordinates metabolic adaptation to cell proliferation in cancer through PFKFB3.
  • This study reveals a novel pathway linking stress response, MK2, and enhanced glycolysis.
  • PFKFB3 emerges as a potential therapeutic target for cancer treatment.

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