eye, with Df(2R)CX1, Scer\GAL4GMR.PF
Expression of DJ-1αdsRNA.Scer\UAS under the control of Scer\GAL4Ddc.PL results in accelerated age-dependent loss of dopaminergic neurons in adult flies (reared on a yeast-paste diet) aged flies also display decreased climbing ability relative to controls.
Flies expressing DJ-1αdsRNA.Scer\UAS under the control of Scer\GAL4GMR.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).
DJ-1αRNAi.UAS, Scer\GAL4Ddc.PL has increased cell death phenotype, enhanceable by Pi3K92ED954A.UAS.Tag:MYC, Scer\GAL4Ddc.PL
DJ-1αRNAi.UAS, Scer\GAL4GMR.PF has increased cell death phenotype, enhanceable by Pi3K92ED954A.UAS.Tag:MYC, Scer\GAL4GMR.PF
DJ-1αRNAi.UAS, Scer\GAL4Ddc.PL has abnormal neuroanatomy | adult stage | progressive phenotype, suppressible by Hsap\PARK7UAS.cYa, Scer\GAL4Ddc.PL
DJ-1αRNAi.UAS, Scer\GAL4Ddc.PL has abnormal locomotor behavior | adult stage phenotype, suppressible by Hsap\PARK7UAS.cYa, Scer\GAL4Ddc.PL
DJ-1αRNAi.UAS, Scer\GAL4GMR.PF has increased cell death phenotype, suppressible by AktUAS.Tag:HA, Scer\GAL4GMR.PF
DJ-1αRNAi.UAS, Scer\GAL4Ddc.PL has increased cell death phenotype, suppressible by Pi3K92EUAS.Tag:MYC, Scer\GAL4Ddc.PL
DJ-1αRNAi.UAS, Scer\GAL4GMR.PF has increased cell death phenotype, suppressible by Pi3K92EUAS.Tag:MYC, Scer\GAL4GMR.PF
DJ-1αRNAi.UAS, Scer\GAL4GMR.PF has increased cell death phenotype, suppressible | partially by Hsap\PARK7UAS.cYa, Scer\GAL4GMR.PF
DJ-1αRNAi.UAS, PtenUAS.cHa, Scer\GAL4GMR.PF has increased cell death phenotype
DJ-1αRNAi.UAS, Scer\GAL4Ddc.PL has dopaminergic neuron phenotype, enhanceable by Pi3K92ED954A.UAS.Tag:MYC, Scer\GAL4Ddc.PL
DJ-1αRNAi.UAS, Scer\GAL4GMR.PF has eye photoreceptor cell phenotype, enhanceable by Pi3K92ED954A.UAS.Tag:MYC, Scer\GAL4GMR.PF
DJ-1αRNAi.UAS, Scer\GAL4GMR.PF has eye phenotype, enhanceable by Pi3K92ED954A.UAS.Tag:MYC, Scer\GAL4GMR.PF
DJ-1αRNAi.UAS, Scer\GAL4GMR.PF has ommatidium phenotype, enhanceable by Pi3K92ED954A.UAS.Tag:MYC, Scer\GAL4GMR.PF
DJ-1αRNAi.UAS, Scer\GAL4GMR.PF has eye phenotype, enhanceable by PtenUAS.cHa, Scer\GAL4GMR.PF
DJ-1αRNAi.UAS, Scer\GAL4Ddc.PL has dopaminergic neuron | adult stage | progressive phenotype, suppressible by Hsap\PARK7UAS.cYa, Scer\GAL4Ddc.PL
DJ-1αRNAi.UAS, Scer\GAL4Ddc.PL has dopaminergic neuron phenotype, suppressible by Pi3K92EUAS.Tag:MYC, Scer\GAL4Ddc.PL
DJ-1αRNAi.UAS, Scer\GAL4GMR.PF has eye photoreceptor cell phenotype, suppressible by AktUAS.Tag:HA, Scer\GAL4GMR.PF
DJ-1αRNAi.UAS, Scer\GAL4GMR.PF has eye photoreceptor cell phenotype, suppressible by Pi3K92EUAS.Tag:MYC, Scer\GAL4GMR.PF
DJ-1αRNAi.UAS, Scer\GAL4GMR.PF has eye phenotype, suppressible by AktUAS.Tag:HA, Scer\GAL4GMR.PF
DJ-1αRNAi.UAS, Scer\GAL4GMR.PF has eye phenotype, suppressible by Pi3K92EUAS.Tag:MYC, Scer\GAL4GMR.PF
DJ-1αRNAi.UAS, Scer\GAL4GMR.PF has ommatidium phenotype, suppressible by AktUAS.Tag:HA, Scer\GAL4GMR.PF
DJ-1αRNAi.UAS, Scer\GAL4GMR.PF has ommatidium phenotype, suppressible by Pi3K92EUAS.Tag:MYC, Scer\GAL4GMR.PF
DJ-1αRNAi.UAS, Scer\GAL4GMR.PF has eye photoreceptor cell phenotype, suppressible | partially by Hsap\PARK7UAS.cYa, Scer\GAL4GMR.PF
DJ-1αRNAi.UAS, Scer\GAL4GMR.PF has eye phenotype, suppressible | partially by Hsap\PARK7UAS.cYa, Scer\GAL4GMR.PF
DJ-1αRNAi.UAS, Scer\GAL4GMR.PF has ommatidium phenotype, suppressible | partially by Hsap\PARK7UAS.cYa, Scer\GAL4GMR.PF
DJ-1αRNAi.UAS, Scer\GAL4GMR.PF has eye photoreceptor cell phenotype, non-suppressible by Avic\GFPUAS.cUa, Scer\GAL4GMR.PF
DJ-1αRNAi.UAS, Scer\GAL4GMR.PF has eye phenotype, non-suppressible by Avic\GFPUAS.cUa, Scer\GAL4GMR.PF
DJ-1αRNAi.UAS, Scer\GAL4GMR.PF has ommatidium phenotype, non-suppressible by Avic\GFPUAS.cUa, Scer\GAL4GMR.PF
DJ-1αRNAi.UAS, PtenUAS.cHa, Scer\GAL4GMR.PF has ommatidium phenotype
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.
The accelerated age-dependent loss of dopaminergic neurons as well as the decrease in climbing ability in aged adults characteristic for flies expressing DJ-1αdsRNA.Scer\UAS under the control of Scer\GAL4Ddc.PL (reared on a yeast-paste diet) is rescued by co-expression of Hsap\PARK7Scer\UAS.cYa.
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.
DJ-1αRNAi.UAS is partially rescued by DJ-1αUAS.cYa/Scer\GAL4GMR.PF
Expression of a DJ-1αScer\UAS.cYa transgene partially rescues the DJ-1αdsRNA.Scer\UAS (Scer\GAL4GMR.PF) eye degeneration phenotype.