UASt regulatory sequences drive expression of wild-type Hsap\LRRK2 tagged with Tag:FLAG at the N-terminus.
The expression of Hsap\LRRK2Scer\UAS.cLa.T:Zzzz\FLAG under the control of Scer\GAL4ple.PF, Scer\GAL4nSyb.PG, Scer\GAL4Gr5a.8.5, Scer\GAL4E49, Scer\GAL4Ddc.PL, Scer\GAL4Ddc.HL9, Scer\GAL4ple.TH-C' or Scer\GAL4ple.TH-D' leads to insignificant differences in proboscis extension reflex (in starved flies exposed to a moderate sugar stimulus), as compared to controls. In ad libitum conditions, Scer\GAL4ple.PF-driven expression leads to a significant decrease in lifespan, as compared to controls.
As in controls, the dynamic golgi outposts (GOPs) in the dendrites of dendritic arborizing neurons expressing Hsap\LRRK2Scer\UAS.cLa.T:Zzzz\FLAG under the control of Scer\GAL4ppk.PU show an overall preference for retrograde movement (towards cell bodies). However, anterograde movement (towards dendritic ends) is slightly increased compared to controls and retrograde displacement is reduced. Velocity of movement is unchanged in both directions.
Flies expressing Hsap\LRRK2Scer\UAS.cLa.T:Zzzz\FLAG under the control of Scer\GAL4ple.PG do not show a progressive reduction in electroretinogram (ERG) amplitude (there is no significant difference in the amplitude seen in 3 and 28 day old flies).
Expression of Hsap\LRRK2Scer\UAS.cLa.T:Zzzz\FLAG in dendritic arborization (DA) neurons using Scer\GAL4109(2)80 engenders dendrite arborization defects as shown by the quantification of numbers of dendritic ends in the dorsal field of A6 segments in third instar larvae.
Axonal terminals of class IV dendritic arborizing neurons expressing Scer\GAL4ppk.PG>Hsap\LRRK2Scer\UAS.cLa.T:Zzzz\FLAG remain normal, targeting to the ventral nerve cord, although the complexity of dendrites is severely compromised, displaying shorter and fewer terminal arbors and leaving some receptive fields uncovered.
Hsap\LRRK2UAS.cLa.Tag:FLAG/Scer\GAL4ppk.PU is a suppressor of abnormal neuroanatomy phenotype of Df(3R)del6/Lrrke03680
Hsap\LRRK2UAS.cLa.Tag:FLAG/Scer\GAL4ppk.PU is a suppressor of dendritic arborizing neuron phenotype of Df(3R)del6/Lrrke03680
Hsap\LRRK2UAS.cLa.Tag:FLAG/Scer\GAL4ppk.PU is a suppressor of dendrite phenotype of Df(3R)del6/Lrrke03680
Hsap\LRRK2UAS.cLa.Tag:FLAG/Scer\GAL4ppk.PU is a suppressor of Golgi stack phenotype of Df(3R)del6/Lrrke03680
Expression of Hsap\LRRK2Scer\UAS.cLa.T:Zzzz\FLAG in dendritic arborizing neurons under the control of either Scer\GAL4109(2)80 or Scer\GAL4ppk.PU suppresses the dendrite overgrowth seen in Df(3R)del6/Lrrke03680 mutants.
Expression of Hsap\LRRK2Scer\UAS.cLa.T:Zzzz\FLAG in dendritic arborizing class IV neurons under the control of Scer\GAL4ppk.PU suppresses the preference for anterograde movement (towards dendritic ends) seen in Df(3R)del6/Lrrke03680 mutant golgi outposts (GOPs), with the resulting GOPs showing the retrograde preference (towards cell bodies) seen in the Scer\GAL4ppk.PU control.