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Because of the singular importance of DNA for genetic inheritance, all organisms have evolved mechanisms to recognize and respond to DNA damage. In metazoans, cells can respond to DNA damage either by undergoing cell cycle arrest, to facilitate DNA repair, or by undergoing cell suicide. Cell death can either occur by activation of the apoptotic machinery or simply be a consequence of irreparable damage...
Previously, we analyzed mice lacking either caspase-2 or caspase-3 and documented a role for caspase-2 in developmental and chemotherapy-induced apoptosis of oocytes. Those data also revealed dispensability of caspase-3, although we found this caspase critical for ovarian granulosa cell death. Because of the mutual interdependence of germ cells and granulosa cells, herein we generated caspase-2 and...
QM31 represents a new class of cytoprotective agents that inhibit the formation of the apoptosome, the caspase activation complex composed by Apaf-1, cytochrome c, dATP and caspase-9. Here, we analyzed the cellular effects of QM31, as compared to the prototypic caspase inhibitor Z-VAD-fmk. QM31 was as efficient as Z-VAD-fmk in suppressing caspase-3 activation, and conferred a similar cytoprotective...
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