A Link Between the Antioxidant Defense System and Calcium: A Proposal for the Biochemical Function of Bcl-2
Tumorigenesis has long been viewed as a problem of perturbed regulation of cell proliferation. It has, however, become increasingly apparent during the last years that disturbance of the equilibrium between cell survival and cell death may equally contribute to the development of a tumor. Elimination of cells has first been described by morphologists as an important physiological process in developmental biology for which the term programmed cell death (PCD) or apoptosis has been coined, and has since then been recognized as a generally important phenomenon in many different areas of biology (Wyllie et al., 1980). Apart from morphological criteria, apoptosis is only poorly defined and discrimination from other forms of cell death is often difficult. Regardless of the definition of apoptosis, it is apparent that susceptibility versus resistance to toxic conditions or death inducing signals is an extremely important property of a cell determining its fate in its environmental context.
KeywordsLymphoma Glutathione Superoxide NADPH Cyclosporin
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