Regeneration is the ability that allows organisms to replace missing organs or lost tissue after injuries. This ability requires the coordinated activity of different cellular processes, including programmed cell death. Apoptosis plays a key role as a source of signals necessary for regeneration in different organisms. The imaginal discs of Drosophila melanogaster provide a particularly well-characterised model system for studying the cellular and molecular mechanisms underlying regeneration. Although it has been shown that signals produced by apoptotic cells are needed for homeostasis and regeneration of some tissues of this organism, such as the adult midgut, the contribution of apoptosis to disc regeneration remains unclear. Using a new method for studying disc regeneration in physiological conditions, we have defined the pattern of cell death in regenerating discs. Our data indicate that during disc regeneration, cell death increases first at the wound edge, but as regeneration progresses dead cells can be observed in regions far away from the site of damage. This result indicates that apoptotic signals initiated in the wound spread throughout the disc. We also present results which suggest that the partial inhibition of apoptosis does not have a major effect on disc regeneration. Finally, our results suggest that during disc regeneration distinct apoptotic signals might be acting simultaneously.
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Univ Colorado, Dept Mol Cellular & Dev Biol, Boulder, CO USA
Colorado State Univ, Coll Vet Med & Biomed Sci, Ft Collins, CO USAUniv Colorado, Dept Mol Cellular & Dev Biol, Boulder, CO USA
Ledru, Michelle
Clark, Caitlin A.
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Univ Colorado, Dept Mol Cellular & Dev Biol, Boulder, CO USAUniv Colorado, Dept Mol Cellular & Dev Biol, Boulder, CO USA
Clark, Caitlin A.
Brown, Jeremy
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Univ Colorado, Dept Mol Cellular & Dev Biol, Boulder, CO USAUniv Colorado, Dept Mol Cellular & Dev Biol, Boulder, CO USA
Brown, Jeremy
Verghese, Shilpi
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Univ Colorado, Dept Mol Cellular & Dev Biol, Boulder, CO USA
Emory Univ, Dept Cell Biol, Atlanta, GA USAUniv Colorado, Dept Mol Cellular & Dev Biol, Boulder, CO USA
Verghese, Shilpi
Ferrara, Sarah
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Univ Colorado, Ctr Canc, Anschutz Med Campus, Aurora, CO USAUniv Colorado, Dept Mol Cellular & Dev Biol, Boulder, CO USA
Ferrara, Sarah
Goodspeed, Andrew
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Univ Colorado, Ctr Canc, Anschutz Med Campus, Aurora, CO USA
Univ Colorado, Dept Pharmacol, Anschutz Med Campus, Aurora, CO USAUniv Colorado, Dept Mol Cellular & Dev Biol, Boulder, CO USA
Goodspeed, Andrew
Su, Tin Tin
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Univ Colorado, Dept Mol Cellular & Dev Biol, Boulder, CO USA
Univ Colorado, Ctr Canc, Anschutz Med Campus, Aurora, CO USAUniv Colorado, Dept Mol Cellular & Dev Biol, Boulder, CO USA
机构:
Univ Colorado, Dept Mol Cellular & Dev Biol, Boulder, CO USA
Colorado State Univ, Coll Vet Med & Biomed Sci, Ft Collins, CO USAUniv Colorado, Dept Mol Cellular & Dev Biol, Boulder, CO USA
Ledru, Michelle
Clark, Caitlin A.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Colorado, Dept Mol Cellular & Dev Biol, Boulder, CO USAUniv Colorado, Dept Mol Cellular & Dev Biol, Boulder, CO USA
Clark, Caitlin A.
Brown, Jeremy
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h-index: 0
机构:
Univ Colorado, Dept Mol Cellular & Dev Biol, Boulder, CO USAUniv Colorado, Dept Mol Cellular & Dev Biol, Boulder, CO USA
Brown, Jeremy
Verghese, Shilpi
论文数: 0引用数: 0
h-index: 0
机构:
Univ Colorado, Dept Mol Cellular & Dev Biol, Boulder, CO USA
Emory Univ, Dept Cell Biol, Atlanta, GA USAUniv Colorado, Dept Mol Cellular & Dev Biol, Boulder, CO USA
Verghese, Shilpi
Ferrara, Sarah
论文数: 0引用数: 0
h-index: 0
机构:
Univ Colorado, Ctr Canc, Anschutz Med Campus, Aurora, CO USAUniv Colorado, Dept Mol Cellular & Dev Biol, Boulder, CO USA
Ferrara, Sarah
Goodspeed, Andrew
论文数: 0引用数: 0
h-index: 0
机构:
Univ Colorado, Ctr Canc, Anschutz Med Campus, Aurora, CO USA
Univ Colorado, Dept Pharmacol, Anschutz Med Campus, Aurora, CO USAUniv Colorado, Dept Mol Cellular & Dev Biol, Boulder, CO USA
Goodspeed, Andrew
Su, Tin Tin
论文数: 0引用数: 0
h-index: 0
机构:
Univ Colorado, Dept Mol Cellular & Dev Biol, Boulder, CO USA
Univ Colorado, Ctr Canc, Anschutz Med Campus, Aurora, CO USAUniv Colorado, Dept Mol Cellular & Dev Biol, Boulder, CO USA