A Database of Drosophila Genes & Genomes

FB2013_03, released May 7th, 2013
 

Allele Dmel\DJ-1αdsRNA.Scer\UAS

General Information
SymbolDmel\DJ-1αdsRNA.Scer\UASSpeciesD. melanogaster
NameFlyBase IDFBal0190191
Feature typealleleAssociated geneDmel\DJ-1α
Allele class
Mutagenin vitro construct - RNAi
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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
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Associated Sequence Data
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DNA sequence
Protein sequence
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Nature of the lesion
Statement
Reference
Construct: Scer\UAS sequences drive expression of genomic DJ-1α sequence fused with an inverted DJ-1α cDNA fragment corresponding to the same region to generate dsRNA.
Construct: Scer\UAS regulatory sequences drive expression of dsRNA-encoding DJ-1α sequences.
Carried in construct
Cytology
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Statement
Reference
Flies expressing DJ-1α[dsRNA.Scer\UAS] under the control of Scer\GAL4[GMR.PF] at 29[o]C have black lesions on the eye surface.
Induction of DJ-1αdsRNA.Scer\UAS in the developing eye using Scer\GAL4GMR.PF produces a rough eye phenotype, caused through a loss of photoreceptor neurons and some ommatidia. This RNAi effect is dosage dependent as increasing the copy number of Scer\GAL4GMR.PF and DJ-1αdsRNA.Scer\UAS results in a more severe degeneration of the eye. In a Df(2R)CX1 heterozygous background (Df(2R)CX1 removes DJ-1α), the eye phenotype of DJ-1αdsRNA.Scer\UAS/Scer\GAL4GMR.PF is significantly enhanced. Expression of DJ-1αdsRNA.Scer\UAS, under the control of Scer\GAL4Ddc.PL results in an age-dependent reduction in the number of ple-positive (dopaminergic) neurons in the dorsomedial clusters. In 1-day-old flies, a normal complement of ple positive neurons (approximately 18) is present, but, in 35-day and old flies, only 10-12 of these neurons can be detected. Induction of DJ-1αdsRNA.Scer\UAS with Scer\GAL4ple.PF or Scer\GAL4elav-C155 results in a reduction in ple-positive dopaminergic neurons in the dorsomedial clusters. In newly eclosed flies the numbers of dopaminergic neurons is comparable between control and DJ-1αdsRNA.Scer\UAS (Scer\GAL4ple.PF) flies. However, 1 day after eclosion, DJ-1αdsRNA.Scer\UAS flies exhibit significantly reduced dopaminergic neuron levels compared to wild-type. At 4,7 and 10 dyas of age, control flies and DJ-1αdsRNA.Scer\UAS flies exhibit an age-dependent decline in dopaminergic neurons, although DJ-1αdsRNA.Scer\UAS flies consistently exhibit more reduction than in controls. When treated with 1% H2O2, the time to reach 50% mortality is reduced by 27% in DJ-1αdsRNA.Scer\UAS (under the control of Scer\GAL4elav-C155) compared to controls. DJ-1αdsRNA.Scer\UAS (under the control of Scer\GAL4elav-C155) flies are more sensitive to 3-AT (a known inhibitor of catalase, which converts H2O2 to H20) exposure compared to control flies.
Induction of DJ-1αdsRNA.Scer\UAS in aduly fly dopaminergic neurons (through Scer\GAL4ple.PF leads to an elevation in the levels of reactive oxygen species (ROS).
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Statement
Reference
Coexpression of PtenScer\UAS.cHa with DJ-1αdsRNA.Scer\UAS, under the control of Scer\GAL4GMR.PF enhances the DJ-1αdsRNA.Scer\UAS-induced eye phenotype. The resulting eyes are dramatically reduced in size, with collapsed and fused ommatidia and necrotic spots, which are not present in DJ-1αdsRNA.Scer\UAS flies. There is also a near complete loss of photoreceptor neurons. Coexpression of Pi3K92ED954A.Scer\UAS.T:Hsap\MYC with DJ-1αdsRNA.Scer\UAS, under the control of Scer\GAL4GMR.PF enhances the DJ-1αdsRNA.Scer\UAS-induced eye phenotype. Coexpression of Pi3K92ED954A.Scer\UAS.T:Hsap\MYC with DJ-1αdsRNA.Scer\UAS, under the control of Scer\GAL4Ddc.PL results in a statistically significant enhancement of the dopaminergic (DA) degeneration phenotype of DJ-1αdsRNA.Scer\UAS mutants. Coexpression of Pi3K92EScer\UAS.T:Hsap\MYC with DJ-1αdsRNA.Scer\UAS, under the control of Scer\GAL4GMR.PF suppresses the DJ-1αdsRNA.Scer\UAS-induced eye phenotype. The eyes are restored to normal size, and the organisation of the ommatidia is significantly improved. Coexpression of Pi3K92EScer\UAS.T:Hsap\MYC with DJ-1αdsRNA.Scer\UAS, under the control of Scer\GAL4Ddc.PL completely suppresses the dopaminergic (DA) degeneration phenotype of DJ-1αdsRNA.Scer\UAS mutants. The number of DA neurons remains consistent throughout. Coexpression of Akt1Scer\UAS.T:Ivir\HA1 with DJ-1αdsRNA.Scer\UAS, under the control of Scer\GAL4GMR.PF suppresses the DJ-1αdsRNA.Scer\UAS-induced eye phenotype.
DJ-1αdsRNA.Scer\UAS flies coexpressing Pi3K92EScer\UAS.T:Hsap\MYC (both in the dopaminergic neurons through Scer\GAL4ple.PF) exhibit basal levels of reactive oxygen species (ROS), as in wild-type. DJ-1αdsRNA.Scer\UAS flies coexpressing PtenScer\UAS.cHa (both in the dopaminergic neurons through Scer\GAL4ple.PF) exhibit higher levels of reactive oxygen species (ROS), compared to flies expressing DJ-1αdsRNA.Scer\UAS alone.
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Statement
Reference
Co-expression of Hsap\DJ-1AScer\UAS.cYa with DJ-1αdsRNA.Scer\UAS, under the regulation of Scer\GAL4GMR.PF partially suppresses the eye degeneration phenotype observed in DJ-1αdsRNA.Scer\UAS (Scer\GAL4GMR.PF) mutants. Co-expression of Avic\GFPScer\UAS with DJ-1αdsRNA.Scer\UAS, under the regulation of Scer\GAL4GMR.PF has no effect on the DJ-1αdsRNA.Scer\UAS eye degeneration phenotype.
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Partially rescued by
Comments
Expression of a DJ-1αScer\UAS.cYa transgene partially rescues the DJ-1αdsRNA.Scer\UAS (Scer\GAL4GMR.PF) eye degeneration phenotype.
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Reported As
Symbol Synonym
DJ-1αdsRNA.Scer\UAS
 
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hide References ( 4 )
Research paper
Venderova et al., 2009, Hum. Mol. Genet. 18(22): 4390--4404
Leucine-Rich Repeat Kinase 2 interacts with Parkin, DJ-1 and PINK-1 in a Drosophila melanogaster model of Parkinson's disease. [FBrf0209058]
Yang et al., 2008, Proc. Natl. Acad. Sci. U.S.A. 105(19): 7070--7075
Pink1 regulates mitochondrial dynamics through interaction with the fission/fusion machinery. [FBrf0205047]
Yang et al., 2005, Proc. Natl. Acad. Sci. U.S.A. 102(38): 13670--13675
Inactivation of Drosophila DJ-1 leads to impairments of oxidative stress response and phosphatidylinositol 3-kinase/Akt signaling. [FBrf0188284]
Supplementary material
Yang, 2005, Proc. Natl. Acad. Sci. USA 102(38):
[title not yet available] [FBrf0191581]