Analysis of the Function of Apoptosis during Imaginal Wing Disc Regeneration in Drosophila melanogaster

被引:11
作者
Diaz-Garcia, Sandra [3 ]
Ahmed, Sara [1 ,2 ]
Baonza, Antonio [1 ,2 ]
机构
[1] CSIC, Ctr Biol Mol Severo Ochoa, Madrid, Spain
[2] Univ Autonoma Madrid, Madrid, Spain
[3] Univ Calif San Diego, Biol Sect Cell & Dev Biol, La Jolla, CA 92093 USA
来源
PLOS ONE | 2016年 / 11卷 / 11期
关键词
JNK SIGNALING PATHWAY; CELL-DEATH; DEPENDENT APOPTOSIS; TISSUE REGENERATION; TRANSDETERMINATION; PROLIFERATION; GROWTH; REQUIRES; ENCODES; KINASE;
D O I
10.1371/journal.pone.0165554
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
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.
引用
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页数:20
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