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 PMID:32726635  

Bab2 Functions as an Ecdysone-Responsive Transcriptional Repressor during Drosophila Development.

Jianli Duan | Yunpo Zhao | Haichao Li | Lukas Habernig | Michael D Gordon | Xuexia Miao | Ylva Engström | Sabrina Büttner
Cell reports | 2020

Drosophila development is governed by distinct ecdysone steroid pulses that initiate spatially and temporally defined gene expression programs. The translation of these signals into tissue-specific responses is crucial for metamorphosis, but the mechanisms that confer specificity to systemic ecdysone pulses are far from understood. Here, we identify Bric-à-brac 2 (Bab2) as an ecdysone-responsive transcriptional repressor that controls temporal gene expression during larval to pupal transition. Bab2 is necessary to terminate Salivary gland secretion (Sgs) gene expression, while premature Bab2 expression blocks Sgs genes and causes precocious salivary gland histolysis. The timely expression of bab2 is controlled by the ecdysone-responsive transcription factor Broad, and manipulation of EcR/USP/Broad signaling induces inappropriate Bab2 expression and termination of Sgs gene expression. Bab2 directly binds to Sgs loci in vitro and represses all Sgs genes in vivo. Our work characterizes Bab2 as a temporal regulator of somatic gene expression in response to systemic ecdysone signaling.

Pubmed ID: 32726635

Additional research tools detected in this publication

Associated grants

  • Agency: NIH HHS, United States
    Id: P40 OD018537
  • Agency: CIHR, Canada
    Id: MOP-114934

Publication data is provided by the National Library of Medicine ® and PubMed ®. Data is retrieved from PubMed ® on a weekly schedule. For terms and conditions see the National Library of Medicine Terms and Conditions.

This is a list of tools and resources that we have found mentioned in this publication.


Bloomington Drosophila Stock Center (tool)

RRID:SCR_006457

Collects, maintains and distributes Drosophila melanogaster strains for research. Emphasis is placed on genetic tools that are useful to a broad range of investigations. These include basic stocks of flies used in genetic analysis such as marker, balancer, mapping, and transposon-tagging strains; mutant alleles of identified genes, including a large set of transposable element insertion alleles; defined sets of deficiencies and a variety of other chromosomal aberrations; engineered lines for somatic and germline clonal analysis; GAL4 and UAS lines for targeted gene expression; enhancer trap and lacZ-reporter strains with defined expression patterns for marking tissues; and a collection of transposon-induced lethal mutations.

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DSHB (tool)

RRID:SCR_013527

An antibody supplier which banks and distributes hybridomas and monoclonal antibodies for use in research. The bank includes antibodies against targets such as GFP, transcription factors, stem cells, and human.

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Anti-GFP (antibody)

RRID:AB_390913

This monoclonal targets GFP

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tubulin beta (antibody)

RRID:AB_528499

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Anti-biotin, HRP-linked Antibody (antibody)

RRID:AB_10696897

This unknown targets biotin HRP-linked

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Adobe Illustrator (software resource)

RRID:SCR_010279

Vector graphics software to create digital graphics, illustrations, and typography for several types of media: print, web, interactive, video, and mobile.

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y[1] w[*]; P{w[+mW.hs]=GawB}AB1 (organism)

RRID:BDSC_1824

Drosophila melanogaster with name y[1] w[*]; P{w[+mW.hs]=GawB}AB1 from BDSC.

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P{w[+mC]=UAS-ttk.p88}1, w[*] (organism)

RRID:BDSC_7360

Drosophila melanogaster with name P{w[+mC]=UAS-ttk.p88}1, w[*] from BDSC.

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y[1] v[1]; P{y[+t7.7] v[+t1.8]=TRiP.JF02546}attP2 (organism)

RRID:BDSC_27258

Drosophila melanogaster with name y[1] v[1]; P{y[+t7.7] v[+t1.8]=TRiP.JF02546}attP2 from BDSC.

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w[1118] (organism)

RRID:BDSC_3605

Drosophila melanogaster with name w[1118] from BDSC.

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GraphPad Prism (software resource)

RRID:SCR_002798

Statistical analysis software that combines scientific graphing, comprehensive curve fitting (nonlinear regression), understandable statistics, and data organization. Designed for biological research applications in pharmacology, physiology, and other biological fields for data analysis, hypothesis testing, and modeling.

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w[*]; P{w[+mC]=UAS-ttk.p69}2 (organism)

RRID:BDSC_7361

Drosophila melanogaster with name w[*]; P{w[+mC]=UAS-ttk.p69}2 from BDSC.

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w[*]; P{w[+mC]=tubP-GAL80[ts]}20; TM2/TM6B, Tb[1] (organism)

RRID:BDSC_7019

Drosophila melanogaster with name w[*]; P{w[+mC]=tubP-GAL80[ts]}20; TM2/TM6B, Tb[1] from BDSC.

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w[*]; P{w[+mC]=UAS-EcR.A}3a (organism)

RRID:BDSC_6470

Drosophila melanogaster with name w[*]; P{w[+mC]=UAS-EcR.A}3a from BDSC.

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w[*]; P{w[+mC]=UAS-mCherry.NLS}2; MKRS/TM6B, Tb[1] (organism)

RRID:BDSC_38425

Drosophila melanogaster with name w[*]; P{w[+mC]=UAS-mCherry.NLS}2; MKRS/TM6B, Tb[1] from BDSC.

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w[*]; P{w[+mC]=Sgs3-GFP}3 (organism)

RRID:BDSC_5885

Drosophila melanogaster with name w[*]; P{w[+mC]=Sgs3-GFP}3 from BDSC.

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y[1] v[1]; P{y[+t7.7] v[+t1.8]=TRiP.JF02585}attP2 (organism)

RRID:BDSC_27272

Drosophila melanogaster with name y[1] v[1]; P{y[+t7.7] v[+t1.8]=TRiP.JF02585}attP2 from BDSC.

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w[1118]; P{w[+mC]=UAS-br.Z1}18-13 (organism)

RRID:BDSC_51190

Drosophila melanogaster with name w[1118]; P{w[+mC]=UAS-br.Z1}18-13 from BDSC.

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w[1118]; P{w[+mC]=UAS-EcR.B1-DeltaC655.W650A}TP1-9 (organism)

RRID:BDSC_6872

Drosophila melanogaster with name w[1118]; P{w[+mC]=UAS-EcR.B1-DeltaC655.W650A}TP1-9 from BDSC.

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Fiji (software resource)

RRID:SCR_002285

Software package as distribution of ImageJ and ImageJ2 together with Java, Java3D and plugins organized into coherent menu structure. Used to assist research in life sciences.

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w[*]; P{w[+mC]=UAS-mCherry.NLS}3 (organism)

RRID:BDSC_38424

Drosophila melanogaster with name w[*]; P{w[+mC]=UAS-mCherry.NLS}3 from BDSC.

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