FB2025_01 , released February 20, 2025
Allele: Dmel\Sirt1EP2300
Open Close
General Information
Symbol
Dmel\Sirt1EP2300
Species
D. melanogaster
Name
FlyBase ID
FBal0119385
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Also Known As
dSir2EP2300, EP(2)2300, Sir2EP2300
Key Links
Genomic Maps

Allele class
Nature of the Allele
Allele class
Progenitor genotype
Associated Insertion(s)
Cytology
Description

P{EP} insertion approximately 400bp upstream of Sir2. The P{EP} insertion is in the correct orientation to drive overexpression of Sir2 from the Scer\UAS regulatory sequences within the P{EP} element.

The P{EP} insertion is 427bp upstream of the putative ATG start codon in the same orientation to the transcription unit.

The P{EP}Sir2EP2300 insertion maps within both Sir2 and DnaJ-H (overlapping genes on opposite strands).

Allele components
Component
Use(s)
Mutations Mapped to the Genome
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 ( 0 )
Disease
Evidence
References
Modifiers Based on Experimental Evidence ( 1 )
Comments on Models/Modifiers Based on Experimental Evidence ( 0 )
 
Disease-implicated variant(s)
 
Phenotypic Data
Phenotypic Class
Phenotype Manifest In
Detailed Description
Statement
Reference

Expression of Sirt1EP2300 under the control of Scer\GAL4Hand.PU leads to significantly increased heart period, diastolic period, and fractional shortening whereas it leads to significantly decreased diastolic dysfunction index while it does not lead to any changes in systolic periods, systolic diameter or diastolic diameter when compared to control adults. Exercise training significantly enhances these hearth function phenotypes, except the systolic period phenotype.

Expression of Sirt1EP2300 under the control of Scer\GAL4Hand.PU significantly increases the climbing index of 5-week-old flies (but not of 1-, 3- or 7-week-old flies) compared to controls. Exercise increases the climbing index of 5- and 7-week-old (but not of 1-week-old or 3-week-old) flies that express Sirt1EP2300 under the control of Scer\GAL4Hand.PU and it extends the lifespan of flies that express Sirt1EP2300 under the control of Scer\GAL4Hand.PU compared to control adults.

Expression of Sirt1EP2300 under the control of Scer\GAL4sca.PU leads to a partial loss of the scutellar bristles.

Flies expressing Sir2EP2300 under the control of Scer\GAL4tub.PU show no increase in lifespan compared to the control carrying the Scer\GAL4tub.PU driver alone.

Overexpression of Sir2EP2300 under the control of Scer\GAL4elav-C155 significantly extends adult lifespan.

Sir2EP2300; Scer\GAL4αTub84B.PL females live on average 57% longer than controls and have a maximal life span (mean of 10% survival) of 19% longer than controls. For males of this genotype, the equivalent figures are 32% and 14% respectively. These lifespan increases are somewhat reduced by a low calorie diet. Similar increases in lifespan are seen when Scer\GAL4elav-C155 is used as a driver in stead of Scer\GAL4αTub84B.PL : female average lifespan up 52% and maximal lifespan up 19%; male average lifespan up 20% and maximal lifespan up 8%. Lifespan is not further increased in these flies by a low calorie diet. When Scer\GAL4arm.PS is used as the driver, there is only a 10-20% increase in average lifespan and no increase in maximal lifespan compared to controls. No increase in lifespan is seen when the driver is Scer\GAL4D42. The presence of 200μM RU486 in the food of Sir2EP2300; Scer\GAL4elav.Switch.PO females increases average lifespan by 5-12% and maximal lifespan by 9-16%.

Expression of Sir2EP2300 under the control of Scer\GAL4GMR.PF does not result in a rough eye phenotype.

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
Enhancer of
Statement
Reference

Sirt1EP2300/Sir2[+] is an enhancer of visible | homeotic phenotype of E(z)32/E(z)61

NOT Enhancer of
Statement
Reference
Suppressor of
Statement
Reference
NOT Suppressor of
Phenotype Manifest In
Enhancer of
NOT Enhancer of
Suppressor of
NOT Suppressor of
Additional Comments
Genetic Interactions
Statement
Reference

Expression of Sirt1EP2300 driven by Scer\GAL4ple.PF suppresses the enlarged mitochondria in dopaminergic neurons and dopaminergic neuron loss (DL1 cluster) seen in Pink1B9/Y flies; additional presence of foxo21/+ partially suppresses the suppressive effect of Sirt1EP2300 driven by Scer\GAL4ple.PF on these phenotypes in Pink1B9/Y flies.

Expression of P{EP}Sir2EP2300 under the control of Scer\GAL4GMR.PU (which results in the simultaneous over-expression of both Sir2 and DnaJ-H) has no effect on eye morphology.

The increased average lifespan of HDAC1def24 homozygous flies is suppressed by Sirt1EP2300/+.

Xenogenetic Interactions
Statement
Reference

Expression of Sir2EP2300 enhances the retinal phenotype seen when Hsap\HTT128Q.1-336.Scer\UAS is expressed under the control of Scer\GAL4GMR.PU.

Expression of Sir2EP2300 enhances the retinal phenotype seen when Hsap\ATXN182Q.Scer\UAS is expressed under the control of Scer\GAL4GMR.PU.

Overexpression of Sir2EP2300 does not reduce the lethality associated with expression of Hsap\HTTQ93.ex1p.Scer\UAS (when both are driven by Scer\GAL4elav-C155). Addition of resveratrol to food fed to these 'double mutant' flies rescues the neuronal degeneration phenotype found in these flies, in a dose-dependent manner.

The rough eye phenotype caused by expression of Hsap\MAPTV337M.Scer\UAS under the control of Scer\GAL4GMR.PF is not modified if the flies are also carrying Sir2EP2300.

Complementation and Rescue Data
Comments
Images (0)
Mutant
Wild-type
Stocks (1)
Notes on Origin
Discoverer
External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (4)
Reported As
Name Synonyms
Secondary FlyBase IDs
    References (20)