FB2025_01 , released February 20, 2025
Allele: Hsap\APPArctic.Aβ42.UAS.cJa.Tag:SS(nec)
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General Information
Symbol
Hsap\APPArctic.Aβ42.UAS.cJa.Tag:SS(nec)
Species
H. sapiens
Name
FlyBase ID
FBal0294067
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Also Known As
UAS-Aβ42arc, Aβ-Arc
Key Links
Transgenic product class
Nature of the Allele
Transgenic product class
Progenitor genotype
Carried in construct
Cytology
Description

UAS regulatory sequences drive expression of an arctic variant (E22G) Aβ1-42 peptide.

Allele components
Component
Use(s)
Encoded product / tool
Mutations Mapped to the Genome
Curation Data
Type
Location
Additional Notes
References
Variant Molecular Consequences
Associated Sequence Data
DNA sequence
Protein sequence
 
Expression Data
Reporter Expression
Additional Information
Statement
Reference
 
Marker for
Reflects expression of
Reporter construct used in assay
Human Disease Associations
Disease Ontology (DO) Annotations
Models Based on Experimental Evidence ( 1 )
Modifiers Based on Experimental Evidence ( 1 )
Disease
Interaction
References
Comments on Models/Modifiers Based on Experimental Evidence ( 0 )
 
Disease-implicated variant(s)
 
This allele represents a human variant implicated in disease.

This construct carries the amyloid Aβ42 peptide; variant described relative to the full-length protein and in terms of the Aβ42 peptide.

APP:p.Glu693Gly
Variants Synonym(s)
APP(Aβ42 peptide):p.Glu22Gly
External database links
Comments concerning this variant
Phenotypic Data
Phenotypic Class
Phenotype Manifest In
Detailed Description
Statement
Reference

Flies expressing Hsap\APParctic.Aβ42.Scer\UAS.att under the control of Scer\GAL4elav-C155 exhibit significantly reduced rhythmicity in constant darkness (DD) compared to controls. The phenotype is from 2-12 days after eclosion onwards and progresses with increased age. Overall locomotor activity is unaffected. The flies exhibit the anticipatory ramping seen in control flies 2-3 hours prior to dusk or dawn in 12 hour light:dark conditions (LD). However, while control flies retain robust circadian behaviour when shifted to constant darkness (DD), the mutant flies become arrhythmic and are unable to re-synchronise within 24 hours of being shifted back to LD. A significantly reduced lifespan is seen compared to controls and, as in controls, lifespan is shorter in constant light conditions (LL) compared with LD. No loss of the LNv and ILNv clock neurons or the dorsal neuron groups LNd and DN1 is observed. Locomotor rhythm in DD is comparable to controls when Hsap\APParctic.Aβ42.Scer\UAS.att is expressed under the control of either Scer\GAL4tim.PE or Scer\GAL4P2.4.Pdf.

Median survival of flies expressing Scer\GAL4elav-C155>Hsap\APParctic.Aβ42.Scer\UAS.att is 31 days compared with 66 days in control flies.

Expression of Hsap\APParctic.Aβ42.Scer\UAS.att under the control of Scer\GAL4elav-C155 results in the proliferation of AΒ plaques throughout the fly brain.

Expression of Hsap\APPArctic.Aβ42.Scer\UAS.cJa.T:SS-nec under the control of Scer\GAL4elav-C155 results in the proliferation of AΒ plaques throughout the fly brain. These individuals display significant decreases in adul locomotion and in adult lifespan, as compared to controls.

Flies expressing Scer\GAL4elav-C155>Hsap\APParctic.Aβ42.Scer\UAS.att become significantly and progressively impaired in their climbing ability. After day 10 the mutant flies are no longer able to climb the sides of the test tubes.

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
NOT Enhanced by
Suppressed by
NOT suppressed by
Phenotype Manifest In
Additional Comments
Genetic Interactions
Statement
Reference
Xenogenetic Interactions
Statement
Reference

Overexpression of CG14715G6908 in Scer\GAL4elav-C155>Hsap\APParctic.Aβ42.Scer\UAS.att flies results in a significant increase in climbing ability in early adulthood but has no effect on survival.

Co-expression of CG14715GD4788 with Hsap\APParctic.Aβ42.Scer\UAS.att using Scer\GAL4elav-C155 results in a significant increase in survival, but no improvement in climbing ability.

Co-expression of CG14715KK104150 with Hsap\APParctic.Aβ42.Scer\UAS.att using Scer\GAL4elav-C155 results in a significant increase in survival, but no improvement in climbing ability.

Co-expression of PGRP-SC1bGD5490 using Scer\GAL4elav-C155 ameliorates the Hsap\APParctic.Aβ42.Scer\UAS.att phenotypes: the flies show improved climbing and survival.

Co-expression of Sod3GD4801 using Scer\GAL4elav-C155 ameliorates the Hsap\APParctic.Aβ42.Scer\UAS.att phenotypes: the flies show improved climbing and survival.

Co-expression of PsaScer\UAS.cKa results in an increase in median survival in flies expressing Hsap\APParctic.Aβ42.Scer\UAS.att under the control of Scer\GAL4elav-C155. In addition, PsaScer\UAS.cKa expression suppresses the retinal toxicity associated with Hsap\APParctic.Aβ42.Scer\UAS.att expression, resulting in normal eye development. These flies are also functionally protected, as shown by improved locomotor function throughout their adult life, as compared to flies expressing Hsap\APParctic.Aβ42.Scer\UAS.att alone. Coexpression of PsaScer\UAS.cKa results in a marked reduction in the number of AΒ deposits.

Co-expression of cueScer\UAS.cKa does not affect the toxicity associated with expression of Hsap\APParctic.Aβ42.Scer\UAS.att under the control of Scer\GAL4elav-C155.

Complementation and Rescue Data
Comments
Images (0)
Mutant
Wild-type
Stocks (0)
Notes on Origin
Discoverer
External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (4)
Reported As
Symbol Synonym
Hsap\APPArctic.Aβ42.Scer\UAS.cJa.T:SS-nec
Hsap\APPArctic.Aβ42.UAS.cJa.Tag:SS(nec)
Hsap\APParctic.Aβ42.Scer\UAS.att
Hsap\APParctic.Aβ42.Scer\UAS
Name Synonyms
Secondary FlyBase IDs
    References (11)