JNK/FOXO mediated PeroxiredoxinV expression regulates redox homeostasis during Drosophila melanogaster gut infection

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Title
JNK/FOXO mediated PeroxiredoxinV expression regulates redox homeostasis during Drosophila melanogaster gut infection
Author(s)
Hye Mi An; Kyu-Sun Lee; D S Lee; Kweon Yu
Bibliographic Citation
Developmental and Comparative Immunology, vol. 38, no. 3, pp. 466-473
Publication Year
2012
Abstract
Innate immunity plays an important role in combating microbial infection in animals. During bacterial infection in Drosophila melanogaster gut, Dual oxidase (Duox) generates reactive oxygen species (ROS) to fight against the infected microbes. Concurrently, antioxidant systems eliminate residual ROS and protect the hosts. Here we found that Drosophila melanogaster Peroxiredoxin V (dPrxV) is an immune-related antioxidant enzyme which maintains intestinal redox homeostasis. dPrxV was highly expressed in gut and induced by the oral infection of Erwinia carotovora carotovora. dPrxV expression was increased by the gut-specific Duox overexpression but decreased by Duox inhibition. Moreover, dPrxV expression was mediated by the JNK/FOXO signaling and dPrxV mutant reduced survival after gut infection. These results suggest that JNK/FOXO mediated dPrxV expression plays a critical role in Drosophila melanogaster gut during bacterial infection in protecting the host gut epithelial cells from oxidative damage.
Keyword
Drosophila melanogasterDuoxFOXOGut infectionJNKPeroxiredoxin VROS
ISSN
0145-305X
Publisher
Elsevier
DOI
http://dx.doi.org/10.1016/j.dci.2012.07.002
Type
Article
Appears in Collections:
Ochang Branch Institute > Division of National Bio-Infrastructure > 1. Journal Articles
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