Effect of glucose uptake on growth rate of mouse 3T3 cells

Journal of Cellular Physiology
A H Romano, N D Connell

Abstract

The objective of this investigation was to determine whether the rate of glucose uptake by mouse 3T3 cells was a primary determinant of growth rate. The experimental approach was to control the rate of glucose uptake into intracellular pools by supplying this sugar at varying concentration in minimal Eagle's medium with dialyzed serum in the absence and presence of 6-deoxy-D-glucose, a metabolically inert homomorphic analog of D-glucose that competitively inhibits the uptake of D-glucose. Total hexose (D-glucose and 6-deoxy-D-glucose) concentration was maintained at the physiological concentration of 5.5 mM, in order to maintain saturation and maximum activity of the D-glucose transport system; thus the flux of D-glucose into the cell was controlled by adjusting its concentration relative to its competing nonmetabolizable analog. It was found that even when the concentration of D-glucose was reduced to 0.7 mM, one eighth of the "normal" level of 5.5 mM, and 6-deoxy-D-glucose was present in sevenfold excess (4.8 mM), conditions under which glucose uptake was reduced to 20% of that shown by cells in the presence of 5.5 mM D-glucose, and intracellular pools of glucose and phosphorylated sugars derived from glucose were reduced to ...Continue Reading

References

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Citations

Jul 1, 1984·The Journal of Experimental Zoology·G L Nieder, H M Weitlauf

Related Concepts

Cell Division Phases
Deoxyglucose
Glucose, (beta-D)-Isomer
Sugar Phosphates

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