A single-cell transcriptomic atlas of fruitless-expressing neurons in the Drosophila pupal central nervous system
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ABSTRACT:
ORGANISM(S): Drosophila melanogaster
PROVIDER: GSE160370 | GEO | 2023/01/25
REPOSITORIES: GEO
Similar Datasets
Project description:Drosophila melanogaster adult males perform an elaborate courtship ritual to entice females to mate. fruitless (fru), a gene that is one of the key regulators of male courtship behavior, encodes multiple male-specific isoforms (FruM). These isoforms vary in their carboxy-terminal zinc finger domains, which are predicted to facilitate DNA binding. By over-expressing individual FruM isoforms in fru-expressing neurons in either males or females and assaying the global transcriptional response by RNA-sequencing, we show that three FruM isoforms have different regulatory activities that depend on the sex of the fly. We identified several sets of genes regulated downstream of FruM isoforms. RNA seqeuncing was performed on mRNA derived from adult male or female heads, for a total of 39 samples. These samples included two wild type genotypes (Berlin and Canton-S), two transheterozygous mutants for fru P1 (Df(3R)P14/Df(3R)fru4-40 and fruw12/ Df(3R)ChaM5), and 3 overexpressing genotypes (fru P1-Gal4: UAS-FruMA, UAS-FruMB, UAS-FruMC). There were at least 3 replicates from biological samples for all sex by genotype combinations.
2013-09-30 | E-GEOD-50515 | biostudies-arrayexpress
Project description:Drosophila reproductive behaviors are directed by fruitless neurons. A reanalysis of genomic studies shows that genes encoding dpr and DIP Immunoglobulin superfamily (IgSF) members are expressed in fru P1 neurons. We find that each fru P1 and dpr/DIP (fru P1 ∩ dpr/DIP) overlapping expression pattern is similar in both sexes, but there are dimorphisms in neuronal morphology and cell number. Behavioral studies of fru P1 ∩ dpr/DIP perturbation genotypes indicates that the mushroom body functions together with the lateral protocerebral complex to direct courtship behavior. A single-cell RNA-seq analysis of fru P1 neurons shows that many DIPs have high expression in a small set of neurons, whereas the dprs are often expressed in a larger set of neurons at intermediate levels, with a myriad of dpr/DIP expression combinations. Functionally, we find that perturbations of sex hierarchy genes and of DIP-ε change the sex-specific morphologies of fru P1 ∩ DIP-α neurons.
2021-02-23 | GSE162098 | GEO
Project description:Drosophila melanogaster adult males perform an elaborate courtship ritual to entice females to mate. fruitless (fru), a gene that is one of the key regulators of male courtship behavior, encodes multiple male-specific isoforms (FruM). These isoforms vary in their carboxy-terminal zinc finger domains, which are predicted to facilitate DNA binding. By over-expressing individual FruM isoforms in fru-expressing neurons in either males or females and assaying the global transcriptional response by RNA-sequencing, we show that three FruM isoforms have different regulatory activities that depend on the sex of the fly. We identified several sets of genes regulated downstream of FruM isoforms.
2013-09-30 | GSE50515 | GEO
Project description:Chromatin modifications have essential roles in directing nervous system development and behavior. Drosophila courtship is an ideal model for understanding the relationships between chromatin modifications, gene expression, sexual dimorphisms in neuroanatomy, and reproductive behaviors. These behaviors are largely innate and are under the control of sex determination hierarchy genes doublesex (dsx) and fruitless (fru) that encode sex-specific transcription factors. Transcripts from the fru P1 promoter are sex-specifically spliced, resulting in male-specific proteins, FruM, which are required for male courtship behaviors. FruM has been shown to form a complex with Bonus/TIF1, a transcriptional cofactor, and interact with chromatin modifying proteins. This indicates that sex-differential modification of the chromatin landscape contributes to creating and maintaining the potential for sexually dimorphic behavior. To examine chromatin modifications genome-wide in fru P1-expressing neurons, we have developed a method to purify chromatin in a cell-type-specific manner using a tagged histone H2B under UAS control, “Chromatag”, paired with sequential ChIP-seq. Here, we evaluate five chromatin modifications: H3K27ac, H3K4me3, H3K36me3, H3K9me3, and H3K27me3 to investigate fru P1-expressing neurons at three developmental stages in both sexes. These modifications have been well characterized for their roles in transcriptional activation or repression. We observe greater changes in chromatin modification profiles across developmental stages than between sexes. In addition, we have generated cell-type specific RNA-seq data sets, using Translating Ribosome Affinity Purification (TRAP), to examine gene expression in fru P1-expressing neurons of both sexes. Informed by these data sets, we have identified several genes with roles in neuronal function and examined their expression in fru P1-expressing neurons, revealing sexually dimorphic expression patterns. Altogether, this work offers insights into stage and sex-differences in chromatin modifications and gene expression in fru P1-expressing neurons.
2021-04-08 | GSE154034 | GEO
Project description:Chromatin modifications have essential roles in directing nervous system development and behavior. Drosophila courtship is an ideal model for understanding the relationships between chromatin modifications, gene expression, sexual dimorphisms in neuroanatomy, and reproductive behaviors. These behaviors are largely innate and are under the control of sex determination hierarchy genes doublesex (dsx) and fruitless (fru) that encode sex-specific transcription factors. Transcripts from the fru P1 promoter are sex-specifically spliced, resulting in male-specific proteins, FruM, which are required for male courtship behaviors. FruM has been shown to form a complex with Bonus/TIF1, a transcriptional cofactor, and interact with chromatin modifying proteins. This indicates that sex-differential modification of the chromatin landscape contributes to creating and maintaining the potential for sexually dimorphic behavior. To examine chromatin modifications genome-wide in fru P1-expressing neurons, we have developed a method to purify chromatin in a cell-type-specific manner using a tagged histone H2B under UAS control, “Chromatag”, paired with sequential ChIP-seq. Here, we evaluate five chromatin modifications: H3K27ac, H3K4me3, H3K36me3, H3K9me3, and H3K27me3 to investigate fru P1-expressing neurons at three developmental stages in both sexes. These modifications have been well characterized for their roles in transcriptional activation or repression. We observe greater changes in chromatin modification profiles across developmental stages than between sexes. In addition, we have generated cell-type specific RNA-seq data sets, using Translating Ribosome Affinity Purification (TRAP), to examine gene expression in fru P1-expressing neurons of both sexes. Informed by these data sets, we have identified several genes with roles in neuronal function and examined their expression in fru P1-expressing neurons, revealing sexually dimorphic expression patterns. Altogether, this work offers insights into stage and sex-differences in chromatin modifications and gene expression in fru P1-expressing neurons.
2021-04-08 | GSE153900 | GEO
Project description:Chromatin modifications have essential roles in directing nervous system development and behavior. Drosophila courtship is an ideal model for understanding the relationships between chromatin modifications, gene expression, sexual dimorphisms in neuroanatomy, and reproductive behaviors. These behaviors are largely innate and are under the control of sex determination hierarchy genes doublesex (dsx) and fruitless (fru) that encode sex-specific transcription factors. Transcripts from the fru P1 promoter are sex-specifically spliced, resulting in male-specific proteins, FruM, which are required for male courtship behaviors. FruM has been shown to form a complex with Bonus/TIF1, a transcriptional cofactor, and interact with chromatin modifying proteins. This indicates that sex-differential modification of the chromatin landscape contributes to creating and maintaining the potential for sexually dimorphic behavior. To examine chromatin modifications genome-wide in fru P1-expressing neurons, we have developed a method to purify chromatin in a cell-type-specific manner using a tagged histone H2B under UAS control, “Chromatag”, paired with sequential ChIP-seq. Here, we evaluate five chromatin modifications: H3K27ac, H3K4me3, H3K36me3, H3K9me3, and H3K27me3 to investigate fru P1-expressing neurons at three developmental stages in both sexes. These modifications have been well characterized for their roles in transcriptional activation or repression. We observe greater changes in chromatin modification profiles across developmental stages than between sexes. In addition, we have generated cell-type specific RNA-seq data sets, using Translating Ribosome Affinity Purification (TRAP), to examine gene expression in fru P1-expressing neurons of both sexes. Informed by these data sets, we have identified several genes with roles in neuronal function and examined their expression in fru P1-expressing neurons, revealing sexually dimorphic expression patterns. Altogether, this work offers insights into stage and sex-differences in chromatin modifications and gene expression in fru P1-expressing neurons.
2021-04-08 | GSE153899 | GEO
Project description:In Drosophila, male-specific FRU (FRUM) is required to establish the potential for courtship behaviors, but the downstream effectors of FRUM during development are largely unknown. A microarray-based approach identified genes that are differentially expressed as a consequence of FRUM in pupae, in both whole body and CNS tissues. Genes were also identified that are sex-differentially expressed in CNS tissues. The FRUM-regulated sets were significantly overrepresented with genes also regulated by the ecdysone regulatory pathway. Two EcR isoforms (EcRA and EcRB1) are expressed in FRUM-expressing neurons during distinct periods of metamorphosis. Males with abrogated EcRA function in FRUM-expressing neurons aggressively court other males. Transcriptional profiles of mutants with abrogated EcRA function in the fru circuit demonstrate that EcR and FRUM regulate common gene sets, including the early gene broad. These results demonstrate a novel role for EcR in specifying male courtship behavior through its actions specifically in the FRUM neural circuitry. All microarrays were dual channel with direct comparisons of male versus female, wild type versus mutant, or experimental versus control. For each experiment, four to eight independent biological samples were analyzed using a dye-swap design. Samples consisted of whole body pupae or dissected CNS collected either at 0 hour After Pupal Formation (APF), 48 hour APF, or 0-24 hour adults.
2009-09-21 | E-GEOD-11752 | biostudies-arrayexpress
Project description:Adult reproductive behaviors in Drosophila melanogaster males and females are vastly different. Yet, neurons that express sex-specifically spliced fruitless transcripts (fru P1) underlie these behaviors in both sexes. How the same set of neurons can drive such different behaviors is an important and unresolved question in developmental genetics. A particular challenge is that fru P1-expressing neurons are only 2-5% of the adult nervous system, making studies of adult head tissue, or even the whole brain, unlikely to yield informative inferences. Translating Ribosome Affinity Purification (TRAP) identifies the actively translated pool of mRNAs from fru P1-expressing neurons and allowed us to conduct a sensitive, cell-specific assay of gene expression. The male and female fru P1-expressing neurons have a shared set of 1,642 genes with enriched TRAP transcripts that form a distinct repertoire, relative to TRAP analyses of all neurons in the adult head. Further, there are a striking number of genes (3,147) that have sex-biased TRAP enrichment in fru P1-expressing neurons. Yet, most of these genes (3,107) have only male-biased TRAP enrichment. This suggests an underlying mechanism to generate dimorphism in behavior, with the transcript repertoire that specifies female behaviors present in both sexes and a large additional set of genes with expression in the male dramatically altering the pattern. Thus, these additional genes invoke the male-specific behaviors by establishing cell fate in the same context of gene expression observed in females. These results suggest a possible global mechanism for how distinct behaviors can arise in different environments, from a shared set of neurons. Libraries were prepared from five independent biological replicates, from TRAP adult heads samples from males and females, and the mRNA input from adult heads from males and females. For each experimental condition, approximately 1,000 flies that were 8 to 24 hours post-eclosion were used.
2015-09-01 | E-GEOD-67743 | biostudies-arrayexpress
Project description:Male and female reproductive behaviors in Drosophila melanogaster are vastly different, but the neurons that express sex-specifically spliced fruitless transcripts (fru P1) underlie these behaviors in both sexes. How this set of neurons can generate such different behaviors between the two sexes is an unresolved question. A particular challenge is that fru P1-expressing neurons comprise only 2-5% of the adult nervous system, and so studies of adult head tissue or whole brain may not reveal crucial differences. Translating Ribosome Affinity Purification (TRAP) identifies the actively translated pool of mRNAs from fru P1-expressing neurons allowing a sensitive, cell-type-specific assay. Genes with TRAP mRNAs that are detected in both sexes are four times as likely to be male biased (1,210) as female biased (331) in fru P1-expressing neurons. This suggests a potential mechanism to generate dimorphism in behavior. The male-biased genes may direct male behaviors by establishing cell fate in a similar context of gene expression observed in females. These results suggest a possible global mechanism for how distinct behaviors can arise from a shared set of neurons.
2015-09-01 | GSE67743 | GEO
Project description:In Drosophila, male-specific FRU (FRUM) is required to establish the potential for courtship behaviors, but the downstream effectors of FRUM during development are largely unknown. A microarray-based approach identified genes that are differentially expressed as a consequence of FRUM in pupae, in both whole body and CNS tissues. Genes were also identified that are sex-differentially expressed in CNS tissues. The FRUM-regulated sets were significantly overrepresented with genes also regulated by the ecdysone regulatory pathway. Two EcR isoforms (EcRA and EcRB1) are expressed in FRUM-expressing neurons during distinct periods of metamorphosis. Males with abrogated EcRA function in FRUM-expressing neurons aggressively court other males. Transcriptional profiles of mutants with abrogated EcRA function in the fru circuit demonstrate that EcR and FRUM regulate common gene sets, including the early gene broad. These results demonstrate a novel role for EcR in specifying male courtship behavior through its actions specifically in the FRUM neural circuitry.
2009-09-21 | GSE11752 | GEO