UAS regulatory sequences drive expression of N-terminally tagged full-length Hsap\SCRIB coding sequences (composed of GenBank accessions D63481 and NM_015356).
Expression of Hsap\ScribScer\UAS.T:Avic\GFP-EGFP within wild-type clones of cells (under the control of Scer\GAL4αTub84B.PL) does not affect differentiation.
Scer\GAL4Act.PU/Hsap\SCRIBUAS.EGFP is a suppressor of lethal | larval stage phenotype of scrib1/scribj7B3
Hsap\SCRIBUAS.EGFP/Scer\GAL4αTub84B.PL is a suppressor of epithelial cell phenotype of scrib1
Hsap\SCRIBUAS.EGFP/Scer\GAL4αTub84B.PL is a suppressor of eye disc | somatic clone phenotype of scrib1
Hsap\SCRIBUAS.EGFP/Scer\GAL4αTub84B.PL is a suppressor of photoreceptor neuron | somatic clone phenotype of scrib1
Hsap\SCRIBUAS.EGFP, Scer\GAL4Act.PU, scrib1/scribj7B3 has wing phenotype
Hsap\SCRIBUAS.EGFP, Scer\GAL4Act.PU, scrib1/scribj7B3 has eye phenotype
Hsap\SCRIBUAS.EGFP, Scer\GAL4Act.PU, scrib1/scribj7B3 has scutellar bristle | ectopic phenotype
Expression of Hsap\ScribScer\UAS.T:Avic\GFP-EGFP (under the control of Scer\GAL4αTub84B.PL) within MARCM-generated scrib1 clones largely restores the differentiation and patterning of the photoreceptors in the eye. Hsap\ScribScer\UAS.T:Avic\GFP-EGFP expression also suppresses the tissue organisation defects associated with scrib1 mutant tissue.
scrib1 mutant clones expressing Hsap\ScribScer\UAS.T:Avic\GFP-EGFP (under the control of Scer\GAL4αTub84B.PL) restores the columnar architecture and monolayer organization of the epithelial cells, while the cytoskeleton appears normal.
Ubiquitous expression of Hsap\ScribScer\UAS.T:Avic\GFP-EGFP (under the control of Scer\GAL4Act.PU) effectively suppresses the larval overgrowth phenotype found in scrib1/scribj7B3 mutants. Expression of Hsap\ScribScer\UAS.T:Avic\GFP-EGFP in scrib1/scribj7B3 mutant third instar imaginal wings suppresses the tumorous overgrowth of the epithelial tissues and allows the formation of a monolayered epithelial structure closely resembling that of wild-type discs.
Expression of Hsap\ScribScer\UAS.T:Avic\GFP-EGFP (under the control of Scer\GAL4Act.PU) rescues larval lethality in scrib1/scribj7B3 mutants to allow 59% to form adult structures (pharate adults) and 23% to eclose as mature adult flies. These adult flies exhibit some developmental defects in the eyes and wings on a proportion of rescued animals as well as ectopic scutellar bristles, suggesting the rescue effect is not fully penetrant. Both sexes appear to be sterile.