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Echinobase
ECB-ART-45446
Elife 2017 Apr 27;6. doi: 10.7554/eLife.23481.
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IL17 factors are early regulators in the gut epithelium during inflammatory response to Vibrio in the sea urchin larva.

Buckley KM , Ho ECH , Hibino T , Schrankel CS , Schuh NW , Wang G , Rast JP .


Abstract
IL17 cytokines are central mediators of mammalian immunity. In vertebrates, these factors derive from diverse cellular sources. Sea urchins share a molecular heritage with chordates that includes the IL17 system. Here, we characterize the role of epithelial expression of IL17 in the larval gut-associated immune response. The purple sea urchin genome encodes 10 IL17 subfamilies (35 genes) and 2 IL17 receptors. Most of these subfamilies are conserved throughout echinoderms. Two IL17 subfamilies are sequentially strongly upregulated and attenuated in the gut epithelium in response to bacterial disturbance. IL17R1 signal perturbation results in reduced expression of several response genes including an IL17 subtype, indicating a potential feedback. A third IL17 subfamily is activated in adult immune cells indicating that expression in immune cells and epithelia is divided among families. The larva provides a tractable model to investigate the regulation and consequences of gut epithelial IL17 expression across the organism.

PubMed ID: 28447937
PMC ID: PMC5457136
Article link: Elife
Grant support: [+]

Genes referenced: LOC100887844 LOC100892182 LOC100893907 LOC115919910 LOC115925415 LOC582915


Article Images: [+] show captions
References [+] :
Barsi, General approach for in vivo recovery of cell type-specific effector gene sets. 2014, Pubmed, Echinobase