Caspase 3–mediated stimulation of tumor cell repopulation during cancer radiotherapy
2011
Cytotoxic cancer therapy can induce accelerated growth of surviving cancer cells, a phenomenon known as tumor repopulation. This report uncovers a mechanism by which caspase 3 activation in treated cells promotes growth of surviving cells, mediated by iPLA2 and PGE2. The level of caspase 3 activation in human tumors also correlates with risk of relapse, suggesting that this pathway may be a determinant of therapeutic effects.
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