Linked Life Data

17078066

Source:http://linkedlifedata.com/resource/pubmed/id/17078066

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
11
pubmed:dateCreated
2006-11-8
pubmed:abstractText
The wing imaginal disc of Drosophila consists of the primordia for the adult wing and the body wall. The zinc-finger transcription factor Teashirt (Tsh) is expressed in the region proximal to the wing primordium and regulates the formation of the wing-body wall boundary. Here, we report that Tollo/Toll-8, a member of Toll family transmembrane proteins, is also expressed proximal to the wing domain. Ectopic expression of Decapentaplegic (Dpp), a morphogen for wing development, represses tollo expression in the proximal domain. Likewise, misexpression of Tollo in the presumptive wing strongly antagonizes the effects of Dpp signaling. The extracellular domain of Tollo containing the Leucine-Rich Repeats (LRR) is required for the inhibition of Dpp signaling in the wing. Furthermore, clones of cells with Tollo overexpression are sorted out from the surrounding wild-type cells, resulting in the formation of epithelial folds around the clone boundaries. Tsh is ectopically induced at the border of Tollo-expressing clones. Despite the strong effects of Tollo overexpression on Dpp signaling and cell sorting, loss-of-function tollo mutants are viable with normal external morphology. Our data suggest that Tollo function might be redundant but is sufficient to antagonize Dpp signaling and induce sorting of Tollo expressing cells from the wing cells to develop proximal cell fate.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
1526-954X
pubmed:author
pubmed:issnType
Print
pubmed:volume
44
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
541-9
pubmed:meshHeading
pubmed-meshheading:17078066-Animals, pubmed-meshheading:17078066-Base Sequence, pubmed-meshheading:17078066-DNA, Intergenic, pubmed-meshheading:17078066-DNA Primers, pubmed-meshheading:17078066-Drosophila, pubmed-meshheading:17078066-Drosophila Proteins, pubmed-meshheading:17078066-Gene Expression Regulation, Developmental, pubmed-meshheading:17078066-Immunohistochemistry, pubmed-meshheading:17078066-In Situ Hybridization, pubmed-meshheading:17078066-Molecular Sequence Data, pubmed-meshheading:17078066-Mutation, pubmed-meshheading:17078066-Repressor Proteins, pubmed-meshheading:17078066-Sequence Analysis, DNA, pubmed-meshheading:17078066-Signal Transduction, pubmed-meshheading:17078066-Toll-Like Receptor 8, pubmed-meshheading:17078066-Transcription Factors, pubmed-meshheading:17078066-Wing
pubmed:year
2006
pubmed:articleTitle
Ectopic expression of Tollo/Toll-8 antagonizes Dpp signaling and induces cell sorting in the Drosophila wing.
pubmed:affiliation
School of Biological Sciences, Seoul National University, Seoul, Korea.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't