The Journal of Experimental Medicine
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© The Rockefeller University Press, 0022-1007/1997/4/1481/ $5.00
The Journal of Experimental Medicine, Volume 185, Number 8, April 21, 1997 1481-1486


Brief Definitive Reports

Intracellular Adenosine Triphosphate (ATP) Concentration: A Switch in the Decision Between Apoptosis and Necrosis

Marcel Leist, Barbara Single, Anna F. Castoldi, Simone Kühnle, and Pierluigi Nicotera

From the Department of Molecular Toxicology, Faculty of Biology, University of Konstanz, D-78457 Konstanz, Germany

Apoptosis and necrosis are considered conceptually and morphologically distinct forms of cell death. Here, we report that demise of human T cells caused by two classic apoptotic triggers (staurosporin and CD95 stimulation) changed from apoptosis to necrosis, when cells were preemptied of adenosine triphosphate (ATP). Nuclear condensation and DNA fragmentation did not occur in cells predepleted of ATP and treated with either of the two inducers, although the kinetics of cell death were unchanged. Selective and graded repletion of the extramitochondrial ATP/pool with glucose prevented necrosis and restored the ability of the cells to undergo apoptosis. Pulsed ATP/depletion/repletion experiments also showed that ATP generation either by glycolysis or by mitochondria was required for the active execution of the final phase of apoptosis, which involves nuclear condensation and DNA degradation.


Address correspondence to Professor P. Nicotera, Chair of Molecular Toxicology, University of Konstanz, POB 5560-X911, D-78457 Konstanz, Germany.


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