Abstract
Recently, vinyl sulfones have been observed to selectively inhibit glyceraldehyde-3-phosphate dehydrogenase (GAPDH), which is an important ATP-generating enzyme in glycolysis. The possibility of using GAPDH as a biochemical parameter of cytotoxicity by vinyl sulfones was investigated using mouse lymphocytes. Incubation of lymphocyte GAPDH with ethylvinyl sulfone resulted in a pseudo-first-order loss of enzyme activity. The exposure of lymphocytes to ethylvinyl sulfone resulted in the decrease of GAPDH activity followed by ATP depletion and cell death, which were both dependent on the concentration of ethylvinyl sulfone. A further study on the time-dependent change indicated that cell death was preceded by ATP loss. Compared to ethylvinyl sulfone, divinyl sulfone was more than 8 times more potent in causing either ATP depletion or cell death.
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Abbreviations
- DTT:
-
dithiothreitol
- GAPDH:
-
glyceraldehyde-3-phosphate dehydrogenase
- NAD:
-
nicotinamide adenine dinucleotide
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Choi, D.S., Kim, Y.B., Lee, Y.H. et al. Glyceraldehyde-3-phosphate dehydrogenase as a biochemical marker of cytotoxicity by vinyl sulfones in cultured murine spleen lymphocytes. Cell Biol Toxicol 11, 23–28 (1995). https://doi.org/10.1007/BF00769989
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DOI: https://doi.org/10.1007/BF00769989