GEO DataSets

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Drosophila melanogaster

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platforms:

GPL21306 GPL17275

66 Samples

Download data: NARROWPEAK

(Submitter supplied) The pioneer transcription factor Zelda (ZLD) increases the accessibility of chromatin to promote the essential process of zygotic genome activation (ZGA) in the Drosophila early embryo. However, many genomic loci remain accessible in the absence of ZLD and are enriched for GA-rich DNA binding motifs. Therefore, we hypothesized that other pioneer TFs that function with ZLD have not yet been identified, especially those that bind to GA-rich motifs. more...

Organism:

Drosophila melanogaster

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL17275

54 Samples

Download data: BED, BW

(Submitter supplied) The pioneer transcription factor Zelda (ZLD) increases the accessibility of chromatin to promote the essential process of zygotic genome activation (ZGA) in the Drosophila early embryo. However, many genomic loci remain accessible in the absence of ZLD and are enriched for GA-rich DNA binding motifs. Therefore, we hypothesized that other pioneer TFs that function with ZLD have not yet been identified, especially those that bind to GA-rich motifs. more...

Organism:

Drosophila melanogaster

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL21306

12 Samples

Download data: BW, NARROWPEAK

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Drosophila melanogaster

Type:

Genome binding/occupancy profiling by high throughput sequencing; Expression profiling by high throughput sequencing

Platforms:

GPL21306 GPL25244 GPL19132

50 Samples

Download data

(Submitter supplied) Following fertilization, the genomes of the germ cells are reprogrammed to form the totipotent embryo. Pioneer transcription factors are essential for remodeling the chromatin and driving the initial wave of zygotic gene expression. In Drosophila melanogaster, the pioneer factor Zelda is essential for development through this dramatic period of reprogramming, known as the maternal- to-zygotic transition (MZT). more...

Organism:

Drosophila melanogaster

Type:

Expression profiling by high throughput sequencing

Platform:

GPL19132

6 Samples

Download data: TXT

(Submitter supplied) Following fertilization, the genomes of the germ cells are reprogrammed to form the totipotent embryo. Pioneer transcription factors are essential for remodeling the chromatin and driving the initial wave of zygotic gene expression. In Drosophila melanogaster, the pioneer factor Zelda is essential for development through this dramatic period of reprogramming, known as the maternal-to-zygotic transition (MZT). more...

Organism:

Drosophila melanogaster

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL25244

12 Samples

Download data: BED, BW

(Submitter supplied) Following fertilization, the genomes of the germ cells are reprogrammed to form the totipotent embryo. Pioneer transcription factors are essential for remodeling the chromatin and driving the initial wave of zygotic gene expression. In Drosophila melanogaster, the pioneer factor Zelda is essential for development through this dramatic period of reprogramming, known as the maternal-to-zygotic transition (MZT). more...

Organism:

Drosophila melanogaster

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL21306

32 Samples

Download data: BED, BW

(Submitter supplied) The earliest stages of development in most metazoans are driven by maternally deposited proteins and mRNAs, with widespread transcriptional activation of the zygotic genome occurring hours after fertilization, at a period known as the maternal-to-zygotic transition (MZT). In Drosophila, the MZT is preceded by the transcription of a small number of genes that initiate sex determination, patterning and other essential developmental processes. more...

Organism:

Drosophila melanogaster

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL11203

3 Samples

Download data: BED, BEDGRAPH

(Submitter supplied) During the first stages of development, the fertilized germ cells rapidly transition to totipotency. Maternally deposited mRNAs encode the proteins necessary for reprogramming the transcriptionally quiescent zygotic genome during this maternal-to-zygotic transition (MZT). The transcription factor Zelda is essential for this reprogramming in the Drosophila embryo. Zelda is necessary for transcriptional activation of the zygotic genome, and the absence of Zelda leads to embryonic lethality during the MZT. more...

Organism:

Drosophila melanogaster

Type:

Expression profiling by high throughput sequencing

Platform:

GPL19132

62 Samples

Download data: TXT

(Submitter supplied) In all animals, the initial events of embryogenesis are controlled by maternal gene products that are deposited into the developing oocyte. At some point after fertilization, control of embryogenesis is transferred to the zygotic genome in a process called the maternal to zygotic transition (MZT). During this time maternal RNAs are degraded and zygotic RNAs are transcribed1. A long standing question has been, what factors regulate these events? The recent findings that microRNAs and Smaugs mediate maternal transcript degradation brought new life to this old problem2,3, however, the transcription factors that activate zygotic gene expression remained elusive. more...

Organism:

Drosophila melanogaster

Type:

Expression profiling by array

Dataset:

GDS3477

Platform:

GPL1322

6 Samples

Download data: CEL

Analysis of embryos lacking the zinc finger protein Zelda. Results provide insight into the role of Zelda in the transfer of control of embryogenesis to the zygotic genome during the process of maternal-to-zygotic transition.

Organism:

Drosophila melanogaster

Type:

Expression profiling by array, count, 2 genotype/variation sets

Platform:

GPL1322

Series:

GSE11231

6 Samples

Download data: CEL

(Submitter supplied) We used FAIRE-seq to perform genome-wide profiling of open chromatin in 2-3 hour Drosophila embryos lacking maternal ZLD (zldM-) and in paired control embryos (yw). We demonstrate that ZLD is required to establish or maintain specific regions of open chromatin. Using single embryo RNA-seq data (from stage 5 yw and zldM- embryos) we show that loci that lose accessibility in zldM- embryos require ZLD for robust expression of associated genes. more...

Organism:

Drosophila melanogaster

Type:

Genome binding/occupancy profiling by high throughput sequencing; Expression profiling by high throughput sequencing

Platform:

GPL13304

6 Samples

Download data: BIGWIG, TXT

(Submitter supplied) Reprogramming cell fate during the first stages of embryogenesis requires that transcriptional activators gain access to the genome and remodel the zygotic transcriptome. Nonetheless, it is not clear if the continued activity of these pioneering factors is required throughout zygotic genome activation or if they are only required early to establish cis-regulatory regions. To address this question, we developed an optogenetic strategy to rapidly and reversibly inactivate the master regulator of genome activation in Drosophila, Zelda. more...

Organism:

Drosophila melanogaster

Type:

Expression profiling by high throughput sequencing

Platform:

GPL17275

34 Samples

Download data: TXT

(Submitter supplied) A central question in biology is how enhancers are made accessible. The Drosophila embryo is a good model system to study this question as the gene regulatory networks regulating early developmental events have been well characterized. Zelda (Zld) is a uniformly distributed transcription factor (TF) integral to these networks, acting prior to and in collaboration with the patterning TFs to regulate target enhancers. more...

Organism:

Drosophila melanogaster

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platforms:

GPL11203 GPL13304 GPL17275

32 Samples

Download data: BW, TXT

(Submitter supplied) A long-standing question in the field of embryogenesis is how the zygotic genome is precisely activated by maternal factors, allowing normal early embryonic development. We have previously shown that N6-methyladenine (6mA) DNA modification is highly dynamic in early Drosophila embryos and forms an epigenetic mark. However, little is known about how 6mA-formed epigenetic information is decoded. Here we report that the Fox-family protein Jumu binds 6mA-marked DNA and acts as a maternal factor to regulate the maternal-to-zygotic transition. more...

Organism:

Drosophila melanogaster

Type:

Methylation profiling by high throughput sequencing; Expression profiling by high throughput sequencing; Genome binding/occupancy profiling by high throughput sequencing; Other

Platforms:

GPL17275 GPL25244

40 Samples

Download data: BED, TXT

(Submitter supplied) During early Drosophila embryogenesis, the essential pioneer factor Zelda defines hundreds of cis-regulatory regions and in doing so reprograms the zygotic transcriptome. While Zelda is essential later in development, it is unclear how the ability of Zelda to define cis-regulatory regions is shaped by cell-type specific chromatin architecture established during differentiation. Asymmetric division of neural stem cells (neuroblasts) in the fly brain provide an excellent paradigm for investigating the cell-type specific functions of this pioneer factor. more...

Organism:

Drosophila melanogaster

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platforms:

GPL21306 GPL25244

21 Samples

Download data: BED, BW

(Submitter supplied) The earliest stage of animal development is controlled by maternally deposited mRNA transcripts and proteins. Once the zygote is able to transcribe its own genome, maternal transcripts are degraded, in a tightly regulated process known as the maternal to zygotic transition (MZT). While this process has been well-studied within model species, we have little knowledge of how the pools of maternal and zygotic transcripts evolve. more...

Organism:

Drosophila persimilis; Drosophila santomea; Drosophila melanogaster; Drosophila yakuba; Drosophila mauritiana; Drosophila mojavensis; Drosophila pseudoobscura; Drosophila willistoni; Drosophila ananassae; Drosophila erecta; Drosophila miranda; Drosophila sechellia; Drosophila simulans; Drosophila virilis

Type:

Expression profiling by high throughput sequencing; Third-party reanalysis

14 related Platforms

119 Samples

Download data: TXT

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Drosophila melanogaster

Type:

Genome binding/occupancy profiling by high throughput sequencing; Expression profiling by high throughput sequencing

Platforms:

GPL25244 GPL17275

30 Samples

Download data: BW

(Submitter supplied) Pioneer factors such as Zelda (Zld) help initiate zygotic transcription in Drosophila early embryos, but whether other factors support this dynamic process is unclear. Odd-paired (Opa), a zinc-finger transcription factor expressed at cellularization, controls the transition of genes from pair-rule to segmental patterns along the anterior-posterior axis. Finding that Opa also regulates expression through enhancer sog_Distal along the dorso-ventral axis, we hypothesized Opa’s role is more general. more...

Organism:

Drosophila melanogaster

Type:

Genome binding/occupancy profiling by high throughput sequencing; Expression profiling by high throughput sequencing

Platform:

GPL25244

16 Samples

Download data: BW, TXT

(Submitter supplied) Pioneer factors such as Zelda initiate zygotic transcription within Drosophila early embryos, but whether other factors also support this dynamic patterning process is unclear. Odd-paired (Opa) is a zinc-finger transcription factor expressed during cellularization, shown to act as timing factor to control pair-rule to segmental patterning transition along the anterior-posterior (AP) axis. We found Opa regulates expression through an enhancer active along the dorso-ventral axis (sog_Distal), specifically, to support its late embryonic expression. more...

Organism:

Drosophila melanogaster

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL17275

14 Samples

Download data: BW