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- W2010758581 abstract "The relationships between autophagy and cell death are complex and still not well understood. To advance our understanding of the molecular connections between autophagy and apoptosis, we performed an RNAi-based screen of Drosophila melanogaster apoptosis-related genes for their ability to enhance or suppress starvation-induced autophagy. We discovered that six apoptosis-related genes, Dcp-1, hid, bruce, buffy, debcl and p53 as well as Ras/Raf/MAPK signaling pathway components play a role in autophagy regulation in Drosophila cultured cells. Our study also provides the first in vivo evidence that the effector caspase Dcp-1 and IAP protein Bruce regulate both autophagy and starvation-induced cell death at two nutrient status checkpoints, germarium and mid-oogenesis, in the Drosophila ovary. Analysis of degenerating mid-stage egg chambers in DmAtg1 and DmAtg7 mutants reveal a reduction in TUNEL staining though DNA condensation appears unaffected. Based on these and previous findings, we propose here a putative molecular pathway that might regulate the sensitivity threshold of apoptotic and autophagic responses. We also discuss multiple interpretations of the Atg mutant egg chamber TUNEL phenotype that are consistent with a possible role for autophagy in either suppressing or enhancing the efficiency of cell degradation and/or promoting cell clearance associated with the death process." @default.
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- W2010758581 date "2009-05-16" @default.
- W2010758581 modified "2023-10-17" @default.
- W2010758581 title "An executioner caspase regulates autophagy" @default.
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- W2010758581 doi "https://doi.org/10.4161/auto.5.4.8061" @default.
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