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Review
. 1993:33:97-110.
doi: 10.1016/0065-2571(93)90011-2.

Fructose 2,6-bisphosphate and the control of glycolysis by growth factors, tumor promoters and oncogenes

Affiliations
Review

Fructose 2,6-bisphosphate and the control of glycolysis by growth factors, tumor promoters and oncogenes

L Hue et al. Adv Enzyme Regul. 1993.

Abstract

Tumor and proliferating cells maintain a high glycolytic rate even under aerobic conditions. The discovery of fructose 2,6-bisphosphate, a potent stimulator of glycolysis, has prompted a re-investigation of this phenomenon. Rat hepatoma cells and fibroblasts stimulated by mitogens or transformed by the Rous sarcoma virus carrying the v-src oncogene were used as models. The results indicate that in established lines of hepatoma cells the biochemical properties of the bifunctional enzyme, PFK-2/FBPase-2, involved in the synthesis and degradation of fructose 2,6-bisphosphate, differ from those of the enzyme from normal liver. In addition, the stimulation of glycolysis induced by phorbol esters and pp60v-src can be explained by an increase in the concentration of fructose 2,6-bisphosphate and an activation of PFK-2. The mechanism of stimulation involves the transcription of a gene whose product activates PFK-2 or is a distinct PFK-2 isozyme. Finally, mercaptopurines were found to block fructose 2,6-bisphosphate synthesis in vitro and in lymphocytes and lymphoblastic cells. In these cells, this resulted in an inhibition of glycolysis.

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