A Database of Drosophila Genes & Genomes

FB2013_03, released May 7th, 2013
 

Allele Dmel\cindrdsRNA.Scer\UAS

General Information
SymbolDmel\cindrdsRNA.Scer\UASSpeciesD. melanogaster
NameFlyBase IDFBal0243992
Feature typealleleAssociated geneDmel\cindr
Allele class
Mutagenin vitro construct - RNAiin vitro construct - regulatory fusion
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Description
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FB2013_03
FB2013_02
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Allele class
Mutagen
Mutations Mapped to the Genome
Type
Location
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Associated Sequence Data
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Protein sequence
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Nature of the lesion
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Scer\UAS regulatory sequences drive expression of an inverted repeat (IR) that targets all known (3) isoforms of cindr.
Carried in construct
Cytology
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Statement
Reference
Co-expression of cindr[dsRNA.PC.PD.Scer\UAS] and cindr[dsRNA.Scer\UAS] under the control of Scer\GAL4[GR1] results in a significant increase in the number of binucleate follicle cells compared to control egg chambers. The increase in binucleate follicle cells is accompanied by a significant decrease in the average number of follicle cell intercellular bridges per nucleus.
Expression of cindr[dsRNA.Scer\UAS] under the control of Scer\GAL4[306] results in a weak border cell migration defect in the egg chamber.
Expression of cindr[dsRNA.Scer\UAS] driven by Scer\GAL4[GMR.PF] results in patterning defect in pupal eyes.
Ubiquitous expression of cindr[dsRNA.Scer\UAS] under the control of Scer\GAL4[tub] leads to embryonic and early larval lethality. Expression of cindr[dsRNA.Scer\UAS] and cindr[dsRNA.PC.PD.Scer\UAS] in the eye for at least 24 hours (under the control of Scer\GAL4[GMR.PF]) does not generate any developmental defects. Initial recruitment of 1[o] cells in Scer\GAL4[GMR.PF]>cindr[dsRNA.PC.PD.Scer\UAS], cindr[dsRNA.Scer\UAS] eyes commences normally and many, though not all, fledgling 1[o] cells successfully encircle a central cone cell quartet. However, these emerging 1[o] cells commonly fail to maintain their niches: 1[o] cells often lose contact with their partners, a loss typically coupled with dissolution of their shared junction. As a result, one proto-1[o] cell is often replaced by another cell to generate a new 1[o] cell. Remarkably, this instability of the 1[o]-1[o] interface continues throughout the stages of interommatidial precursor cell patterning hours after 1[o] cells have normally completed their movements. Expression of cindr[dsRNA.Scer\UAS] in the pupal eye (under the control of Scer\GAL4[GMR.PF]) results in misplacement of cells, misorientation of pattern elements within the ommatidial field, and a variable number of pigment cells. An additional one to two pigment cells surround approximately 16% of Scer\GAL4[GMR.PF]>cindr[dsRNA.Scer\UAS] ommatidia. Patterning of the interommatidial precursor cells is delayed or lost in these flies. Small clonal patches of 1[o] cells expressing cindr[dsRNA.PC.PD.Scer\UAS] and cindr[dsRNA.Scer\UAS] under the control of Scer\GAL4[Scer\FRT.Act5C] are consistently smaller than their wild-type neighbours. Paired cindr[dsRNA.PC.PD.Scer\UAS] 1[o] cells frequently retract, permitting a neighbouring wild-type interommatidial precursor cell direct contact with the central cone cells and often leads to an ectopic third 1[o] cell. Strongly reducing cindr activity (in Scer\GAL4[GMR.PF]>cindr[dsRNA.PC.PD.Scer\UAS], cindr[dsRNA.Scer\UAS] mutants) has a marked effect on F-actin during interommatidial precursor cell patterning: at 28 hours APF, the density of F-actin fibrils and spikes filling the cytoplasm of interommatidial precursor cells is markedly increased. At later stages of patterning, a more dense and disorganized cytoskeletal network is observed in interommatidial precursor cells and the radiating arrangement of actin fibrils in 1[o] cells absent at 41 hours APF. Within cone cells, F-actin levels are mildly elevated at 28 hours APF, and distinct F-actin spikes fail to radiate from cell membranes.
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Statement
Reference
Expression of cindr[dsRNA.Scer\UAS] under the control of Scer\GAL4[306] in a mim[null] background restores the ability of border cells in the egg chamber to migrate.
The pupal eye patterning defect phenotype caused by the expression of cindr[dsRNA.Scer\UAS] driven by Scer\GAL4[GMR.PF] is enhanced by ena[GC1]/+.
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Reported As
Symbol Synonym
cindrdsRNA.Scer\UAS
 
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hide References ( 4 )
Research paper
Haglund et al., 2010, Curr. Biol. 20(10): 944--950
Cindr interacts with anillin to control cytokinesis in Drosophila melanogaster. [FBrf0210868]
Quinones et al., 2010, J. Cell Biol. 189(2): 353--367
I-BAR protein antagonism of endocytosis mediates directional sensing during guided cell migration. [FBrf0210570]
Johnson and Cagan, 2009, PLoS ONE 4(9): e7008
A quantitative method to analyze Drosophila pupal eye patterning. [FBrf0208849]
Johnson et al., 2008, J. Cell Biol. 180(6): 1191--1204
The Drosophila CD2AP/CIN85 orthologue Cindr regulates junctions and cytoskeleton dynamics during tissue patterning. [FBrf0204348]