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A genome-wide analysis reveals that the Drosophila transcription factor, Lola, promotes axon growth in part by suppressing expression of the actin nucleation factor, Spire (allele lola_ORC4)

ABSTRACT: Transcriptional profiling of Drosophila embryos comparing lola mutant 10-12 hour after egg lay (AEL) embryos to age-matched control embryos. Mutants are homozygous isoform K nulls (allele lola_ORC4).

ORGANISM(S): Drosophila melanogaster

PROVIDER: GSE34122 | GEO | 2011/12/03

SECONDARY ACCESSION(S): PRJNA156483

REPOSITORIES: GEO

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A genome-wide analysis reveals that the Drosophila transcription factor, Lola, promotes axon growth in part by suppressing expression of the actin nucleation factor, Spire (allele lola_ORE76)

2011-12-03 | GSE34121 | GEO

A genome-wide analysis reveals that the Drosophila transcription factor, Lola, promotes axon growth in part by suppressing expression of the actin nucleation factor, Spire (allele lola_ORE76)

Project description:Transcriptional profiling of Drosophila embryos comparing lola mutant 10-12 hour after egg lay (AEL) embryos to age-matched control embryos. Mutants are homozygous lola nulls (allele lola_ORE76). Two-condition experiment: lola mutant embryos vs. age-matched control embryos. 7 biological replicates, each sample independently collected and containing RNA from approximately 300 embryos. Mutant and control embryos for each replicate were collected simultaneously. Dye-swaps were performed.

2011-12-03 | E-GEOD-34121 | biostudies-arrayexpress

A genome-wide analysis reveals that the Drosophila transcription factor, Lola, promotes axon growth in part by suppressing expression of the actin nucleation factor, Spire (allele lola_ORC4)

Project description:Transcriptional profiling of Drosophila embryos comparing lola mutant 10-12 hour after egg lay (AEL) embryos to age-matched control embryos. Mutants are homozygous isoform K nulls (allele lola_ORC4). Two-condition experiment: lola mutant embryos vs. age-matched control embryos. 7 biological replicates, each sample independently collected and containing RNA from approximately 300 embryos. Mutant and control embryos for each replicate were collected simultaneously. Dye-swaps were performed.

2011-12-03 | E-GEOD-34122 | biostudies-arrayexpress

A genome-wide analysis reveals that the Drosophila transcription factor, Lola, promotes axon growth in part by suppressing expression of the actin nucleation factor, Spire

Project description:This SuperSeries is composed of the following subset Series: GSE34121: A genome-wide analysis reveals that the Drosophila transcription factor, Lola, promotes axon growth in part by suppressing expression of the actin nucleation factor, Spire (allele lola_ORE76) GSE34122: A genome-wide analysis reveals that the Drosophila transcription factor, Lola, promotes axon growth in part by suppressing expression of the actin nucleation factor, Spire (allele lola_ORC4) Refer to individual Series

2011-12-03 | E-GEOD-34123 | biostudies-arrayexpress

A genome-wide analysis reveals that the Drosophila transcription factor Lola promotes axon growth in part by suppressing expression of the actin nucleation factor Spire.

Project description:BackgroundThe phylogenetically conserved transcription factor Lola is essential for many aspects of axon growth and guidance, synapse formation and neural circuit development in Drosophila. To date it has been difficult, however, to obtain an overall view of Lola functions and mechanisms.ResultsWe use expression microarrays to identify the lola-dependent transcriptome in the Drosophila embryo. We find that lola regulates the expression of a large selection of genes that are known to affect each of several lola-dependent developmental processes. Among other loci, we find lola to be a negative regulator of spire, an actin nucleation factor that has been studied for its essential role in oogenesis. We show that spire is expressed in the nervous system and is required for a known lola-dependent axon guidance decision, growth of ISNb motor axons. We further show that reducing spire gene dosage suppresses this aspect of the lola phenotype, verifying that derepression of spire is an important contributor to the axon stalling phenotype of embryonic motor axons in lola mutants.ConclusionsThese data shed new light on the molecular mechanisms of many lola-dependent processes, and also identify several developmental processes not previously linked to lola that are apt to be regulated by this transcription factor. These data further demonstrate that excessive expression of the actin nucleation factor Spire is as deleterious for axon growth in vivo as is the loss of Spire, thus highlighting the need for a balance in the elementary steps of actin dynamics to achieve effective neuronal morphogenesis.

| S-EPMC3262752 | biostudies-literature

A genome-wide analysis reveals that the Drosophila transcription factor, Lola, promotes axon growth in part by suppressing expression of the actin nucleation factor, Spire

Project description:This SuperSeries is composed of the SubSeries listed below.

2011-12-03 | GSE34123 | GEO

lola-PI-GFP_W3L_ChIP-seq

Project description:modENCODE_submission_5003 This submission comes from a modENCODE project of Kevin White. For full list of modENCODE projects, see http://www.genome.gov/26524648 Project Goal: The White Lab is aiming to map the association of all the Transcription Factors (TF) on the genome of Drosophila melanogaster. One technique that we use for this purpose is chromatin immunoprecipitation coupled with deep sequencing (ChIP-seq) utilizing an Illumina next generation sequencing platform. The data generated by ChIP-seq experiments consist basically of a plot of signal intensity across the genome. The highest signals correspond to positions in the genome occupied by the tested TF. For data usage terms and conditions, please refer to http://www.genome.gov/27528022 and http://www.genome.gov/Pages/Research/ENCODE/ENCODEDataReleasePolicyFinal2008.pdf EXPERIMENT TYPE: CHIP-seq. BIOLOGICAL SOURCE: Strain: lola-RI-GFP; Developmental Stage: L3; Genotype: PBac{y[+]-attP-3B}VK00033; Sex: Unknown; Transgene: lola-RI genomic coding region; EXPERIMENTAL FACTORS: Developmental Stage L3; Target gene lola; Strain lola-RI-GFP; Antibody GFP ab290 (target is Green Fluorescent Protein)

2013-08-28 | E-GEOD-50372 | biostudies-arrayexpress

Roles of Lola-O

Project description:Roles of Lola-O

| PRJNA404083 | ENA

RNA-Sequencing of Wild Type, Lola-F and Lola-Null mutant embryos

Project description:longitudinals lacking (lola) is among the most complex genes in Drosophila melanogaster, encoding up to 20 different protein isoforms and acting as a key transcription factor in axonal pathfinding and neural reprograming. To better characterize Lola function we have generated specific mutations in each isoform using the CRISPR/Cas9 system. Our targeted screen allows us to revisit the previously demonstrated roles for few isoforms, to assign known functions to specific isoforms and to reveal a critical role for a specific variant in the octopaminergic pathway. Thus, our comprehensive study expands the repertoire of Lola functions, and demonstrates that the CRISPR/Cas9 approach is a valuable tool to systematically address the role of complex loci in vivo.

2020-01-08 | GSE93294 | GEO

DamID for Lola-O

2017-12-15 | GSE97836 | GEO