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Developmental Biology
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Developmental Biology
Article . 2002
License: Elsevier Non-Commercial
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Developmental Biology
Article . 2002 . Peer-reviewed
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Genetic Mechanism for the Stage- and Tissue-Specific Regulation of Steroid Triggered Programmed Cell Death in Drosophila

Authors: Lee, Cheng-Yu; Simon, Claudio R.; Woodard, Craig T.; Baehrecke, Eric H.;

Genetic Mechanism for the Stage- and Tissue-Specific Regulation of Steroid Triggered Programmed Cell Death in Drosophila

Abstract

Steroid hormones trigger a wide variety of cell-specific responses during animal development, but the mechanisms by which these systemic signals specify either cell division, differentiation, morphogenesis or death remain uncertain. Here, we analyze the function of the steroid-regulated genes betaFTZ-F1, BR-C, E74A, and E93 during salivary gland programmed cell death. While mutations in the betaFTZ-F1, BR-C, E74A, and E93 genes prevent destruction of salivary glands, only betaFTZ-F1 is required for DNA fragmentation. Analyses of BR-C, E74A, and E93 loss-of-function mutants indicate that these genes regulate stage-specific transcription of the rpr, hid, ark, dronc, and crq cell death genes. Ectopic expression of betaFTZ-F1 is sufficient to trigger premature cell death of larval salivary glands and ectopic transcription of the rpr, dronc, and crq cell death genes that normally precedes salivary gland cell death. The E93 gene is necessary for ectopic salivary gland cell destruction, and ectopic rpr, dronc, and crq transcription, that is induced by expression of betaFTZ-F1. Together, these observations indicate that betaFTZ-F1 regulates the timing of hormone-induced cell responses, while E93 functions to specify programmed cell death.

Keywords

autophagy, Ecdysone, Fushi Tarazu Transcription Factors, Receptors, Cytoplasmic and Nuclear, Apoptosis, Steroidogenic Factor 1, Salivary Glands, Animals, Drosophila Proteins, ecdysone, programmed cell death, development, Molecular Biology, Homeodomain Proteins, metamorphosis, steroid, apoptosis, Cell Biology, Blotting, Northern, DNA-Binding Proteins, Insect Proteins, Drosophila, Developmental Biology, Transcription Factors

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
103
Top 10%
Top 10%
Top 10%
hybrid