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Dev Comp Immunol. 2014 Jan;42(1):16-24. doi: 10.1016/j.dci.2013.04.011. Epub 2013 Apr 28.

Conventional and non-conventional Drosophila Toll signaling.

Author information

1
Section of Cell and Developmental Biology, University of California, San Diego, La Jolla, CA 92093-0349, USA.

Abstract

The discovery of Toll in Drosophila and of the remarkable conservation in pathway composition and organization catalyzed a transformation in our understanding of innate immune recognition and response. At the center of that picture is a cascade of interactions in which specific microbial cues activate Toll receptors, which then transmit signals driving transcription factor nuclear localization and activity. Experiments gave substance to the vision of pattern recognition receptors, linked phenomena in development, gene regulation, and immunity into a coherent whole, and revealed a rich set of variations for identifying non-self and responding effectively. More recently, research in Drosophila has illuminated the positive and negative regulation of Toll activation, the organization of signaling events at and beneath membranes, the sorting of information flow, and the existence of non-conventional signaling via Toll-related receptors. Here, we provide an overview of the Toll pathway of flies and highlight these ongoing realms of research.

KEYWORDS:

Drosophila; Innate immunity; NF-κB; Non-conventional pathway; Toll

PMID:
23632253
PMCID:
PMC3787077
DOI:
10.1016/j.dci.2013.04.011
[Indexed for MEDLINE]
Free PMC Article
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