Gonadal supporting cells acquire sex-specific regulatory elements during mammalian sex determination
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PROVIDER: PRJNA486735 | ENA |
REPOSITORIES: ENA
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Project description:Purpose: In this study we employed unbiased, genome-wide techniques to identify regulatory elements during murine sex determination. Methods: We performed ATAC-seq on 60K FACS-purified XX and XY gonadal cells before and after sex determination to map nucleosome depleted regions (NDRs) indicative of regulatory elements. To determine whether these are active enhancers, we performed ChIP-seq for H3K27ac, a histone modification that marks active enhancers in both sexes and time points. Transient transgenics was performed on select enhancers to determine whether they are functional in gonads during the sex determination stage. Results: We have produced a genome wide map of potential regulatory elements and active enhancers during the process of murine sex determination. Furthermore, we validated the power of our dataset by identifying a novel enhancer downstream of Bmp2, a female-specific gene. Conclusions: This work supplies a powerful resource for identifying chromatin regulatory elements active during mammalian sex determination.
2019-01-02 | GSE118755 | GEO
Project description:Mammalian gonadal sex determination is dependent on proper expression of sex determining genes in fetal gonadal somatic support cells (i.e., pre-granulosa and pre-Sertoli cells in XX and XY gonads, resp.). We used a unique transgenic mouse strain combined with microarray profiling to identify all the differentially expressed transcripts in XX and XY isolated somatic support cells during critical stages of gonadal development and differentiation.
2009-11-09 | GSE18211 | GEO
Project description:Gonadal sex determination represents a unique model for studying cell fate decisions. However, a complete understanding of the different cell lineages forming the developing testis and ovary remains elusive. Here, we investigated the origin, specification, and subsequent sex-specific differentiation of a previously uncharacterized population of supporting-like cells (SLCs) in the developing mouse gonads. The SLC lineage is closely related to the coelomic epithelium and specified as early as E10.5, making it the first somatic lineage to be specified in the bipotential gonad. SLC progenitors are localized within the genital ridge at the interface with the mesonephros and initially coexpress Wnt4 and Sox9. SLCs become sexually dimorphic around E12.5, progressively acquire a more Sertoli- or pregranulosa-like identity and contribute to the formation of the rete testis and rete ovarii. Last, we found that WNT4 is a crucial regulator of the SLC lineage and is required for normal development of the rete testis. In the present study, we built a transcriptomic atlas of the entire cell population of the developing female and male gonads during the process of mouse sex determination. We identified a previously uncharacterized population of supporting-like cells (SLC) and shed light on the origin and the developmental trajectory of this important cell lineage during the process of testis and ovary development.
2022-05-27 | GSE184708 | GEO
Project description:A critical transcription factor required for mammalian male sex determination is SRY (sex determining region on the Y chromosome). The expression of SRY in precursor Sertoli cells is one of the initial events in testis development. The current study was designed to determine the impact of environmentally induced epigenetic transgenerational inheritance on SRY during gonadal sex determination in the male. The agricultural fungicide vinclozolin and vehicle control (DMSO) exposed gestating females (F0 generation) during gonadal sex determination promoted the transgenerational inheritance of differential DNA methylation in sperm of the F3 generation (great grand-offspring). The fetal gonads in F3 generation males were used to identify potential alterations in SRY binding sites in the developing Sertoli cells. Chromatin immunoprecipitation with an SRY antibody followed by genome-wide promoter tiling array (ChIP-Chip) was used to identify alterations in SRY binding. A total of 81 adjacent oligonucleotide sites and 173 single oligo SRY binding sites were identified to be altered transgenerationally in the Sertoli cell vinclozolin lineage F3 generation males. Observations demonstrate the majority of the previously identified normal SRY binding sites were not altered and the altered SRY binding sites were novel and new additional sites. The chromosomal locations, gene associations and potentially modified cellular pathways were investigated. In summary, environmentally induces epigenetic transgenerational inheritance of germline epimutations appears to alter the cellular differentiation and development of the precursor Sertoli cell SRY binding during gonadal sex determination that influence the developmental origins of adult onset testis disease.
2015-08-28 | GSE72469 | GEO
Project description: Not available
| S-EPMC6368449 | biostudies-literature
Project description:Embryonic day 13 (E13), E14, and E16 rat testes and ovaries were used for microarray analysis, as well as E13 testis organ cultures that undergo testis morphogenesis and develop seminiferous cords in vitro. A list of 109 genes resulted from a selective analysis for genes present in male gonadal development and with a 1.5-fold change in expression between E13 and E16. Characterization of these 109 genes potentially important for testis development revealed that cytoskeletal-associated proteins, extracellular matrix factors, and signaling factors were highly represented. Throughout the developmental period (E13-E16), sex-enriched transcripts were more prevalent in the male with 34 of the 109 genes having testis-enriched expression during sex determination. In ovaries, the total number of transcripts with a 1.5-fold change in expression between E13 and E16 was similar to the testis, but none of those genes were both ovary enriched and regulated during the developmental period. Genes conserved in sex determination were identified by comparing changing transcripts in the rat analysis herein, to transcripts altered in previously published mouse studies of gonadal sex determination. A comparison of changing mouse and rat transcripts identified 43 genes with species conservation in sex determination and testis development. Profiles of gene expression during E13-E16 rat testis and ovary development are presented and candidate genes for involvement in sex determination and testis differentiation are identified. Analysis of cellular pathways did not reveal any specific pathways involving multiple candidate genes. However, the genes and gene network identified influence numerous cellular processes with cellular differentiation, proliferation, focal contact, RNA localization, and development being predominant. Keywords: expression analysis, testis, ovary, sex determination
2008-02-20 | GSE10558 | GEO
Project description:Mammalian gonadal sex determination is dependent on proper expression of sex determining genes in fetal gonadal somatic support cells (i.e., pre-granulosa and pre-Sertoli cells in XX and XY gonads, resp.). We used a unique transgenic mouse strain combined with microarray profiling to identify all the differentially expressed transcripts in XX and XY isolated somatic support cells during critical stages of gonadal development and differentiation. Experiment Overall Design: XX and XY somatic support cells (SSC) were isolated by flow cytometry from embryonic day (E) 11.5 and E12.5 mouse gonads. Total RNA was isolated from pools of isolated cells; 3 pools per sex and each timepoint.
2009-11-13 | E-GEOD-18211 | biostudies-arrayexpress
Project description:Single Cell transcriptomic atlas of mouse sex determination and gonadal differentiation
| PRJNA765715 | ENA
Project description:Expression profiles of XX and XY somatic gonadal compartment during sex determination. This experiment was updated in March 2011 to correct the incorrect age value for sample Female E10.5_6 (was 11 days should be 10.5).
2006-01-01 | E-MEXP-454 | biostudies-arrayexpress
Project description:A critical transcription factor required for mammalian male sex determination is SRY (sex determining region on the Y chromosome). The expression of SRY in precursor Sertoli cells is one of the initial events in testis development. The current study was designed to determine the impact of environmentally induced epigenetic transgenerational inheritance on SRY during gonadal sex determination in the male. The agricultural fungicide vinclozolin and vehicle control (DMSO) exposed gestating females (F0 generation) during gonadal sex determination promoted the transgenerational inheritance of differential DNA methylation in sperm of the F3 generation (great grand-offspring). The fetal gonads in F3 generation males were used to identify potential alterations in SRY binding sites in the developing Sertoli cells. Chromatin immunoprecipitation with an SRY antibody followed by genome-wide promoter tiling array (ChIP-Chip) was used to identify alterations in SRY binding. A total of 81 adjacent oligonucleotide sites and 173 single oligo SRY binding sites were identified to be altered transgenerationally in the Sertoli cell vinclozolin lineage F3 generation males. Observations demonstrate the majority of the previously identified normal SRY binding sites were not altered and the altered SRY binding sites were novel and new additional sites. The chromosomal locations, gene associations and potentially modified cellular pathways were investigated. In summary, environmentally induces epigenetic transgenerational inheritance of germline epimutations appears to alter the cellular differentiation and development of the precursor Sertoli cell SRY binding during gonadal sex determination that influence the developmental origins of adult onset testis disease. The experimental design involved the intraperitoneal exposure of gestating female rats to vinclozolin or a vehicle control (dimethyl sulfoxide, DMSO) transiently from embryonic days E8-E14. Sister littermates were divided into control and vinclozolin treatment groups and mated to similar males to minimize the genetic variation between the control and vinclozolin lineages. Sufficient females were used so no inbreeding (sibling or cousin) occurred in any generation. The F1 generation was bred within the lineage to generate the F2 generation and these F2 generation bred to generate the F3 generation. The only exposure was the F0 generation female. The F3 generation control and vinclozolin lineage embryonic day 13 (E13) embryos were collected and the gonads micro-dissected and then sexed with an SRY PCR protocol. The male gonads were pooled from a minimum of three different litters and the pools used to collect DNA. Three different experiments were performed to collect 3 control and vinclozolin E13 F3 generation testis pools, each with different animals (n=25 gonads/pool). The chromatin DNA (not denatured) from each pool was fragmented and used in an SRY chromatin immunoprecipitation (ChIP) procedure for each pool separately. The control and vinclozolin SRY ChIP DNA were paired for a competitive hybridization on a genome-wide promoter tiling array (ChIP-Chip) assay. The hybridization data obtained was used to identify the SRY binding sites that were different in the F3 generation vinclozolin versus control lineage in E13 testis.
2015-08-28 | E-GEOD-72469 | biostudies-arrayexpress