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•Fusion cell gene profiling
•Identify mbo and CG15252 enhancer
•Molecular mechanism of target gene regulation by Dys::Tgo
•Dys::Tgo activation of CG13196
•Dys:Tgo activation of CG15252
•Identify dys fusion cell enhancer
dys-gal4::UAS-CD8-GFP btl-gal4::UAS-CD8-GFP
dys-gal4::UAS-CD8-GFP dys-gal4::UAS-CD8-GFP ; dys/dys
•Identify dys target gene
dys genomic structure
FTF Q72L FTF T31N
F2F elution
LP05454
Exon1 2 3 4 5 6 7 8 9 10
1.7kb2.7kb
3.8kb
3.8kb
3.8kb
CG13196 enhancer
Expression patterns of CG13196 enhancer and TCGTG enhancer
Early S15
4xTCGTG GFP Dys
S16
CG13196 GFP Dys
CG13196 4xTCGTG GFP
S15
S16
Dys Dys
Ectopic expression of dys can activate CG13196 and TCGTG enhancer ectopically
CG15252 5’ upstream
Exon1
3.2kb
9.0 kB 5’ upstream
0.8 kb TCGTG cluster
TCGTG TCGTG TCGTG
Spalt is not required for CG15252 activation by dys in DT
Need to do:CG15252 expression in Spalt mutants
CG15252 Dys CG15252 Dys
btl-gal4;UAS-dys btl-gal4;UAS-spalt;UAS-dys
Ectopic dys can activate mbo-lacZ ectopically
mbo-lacZ-Dys
btl-gal4, UAS-dys
mbo 3’
TCGTG
407bp
ACGTG
Conclusion
•There are other transcriptional activators turns on at late stages or changes in chromatin structure.
• Spalt is not required for CG15252 expression
•There is no transcriptional inhibition at early stage
• dys target genes can only be turn on at late stages (late 14 or early 15)
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