Mus musculus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA96325 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Sry is sufficient to induce testis formation and subsequent male development of internal and external genitalia in chromosomally female mice and humans. In XX sex-reversed males such as XX/Sry-transgenic (XX/Sry) mice, however, testicular germ cells always disappear soon after birth due to germ cell autonomous defects. Therefore, it remains unclear whether or not Sry alone is sufficient to induce a fully functional testicular soma capable of supporting complete spermatogenesis in the XX body. Here we demonstrated that the testicular somatic environment of XX/Sry males is defective in the later phases of spermatogenesis. Spermatogonial transplantation analyses using XX/Sry male mice revealed that donor XY spermatogonia are capable of proliferating, entering meiosis and differentiating into the round spermatid stage. XY donor-derived round spermatids, however, were frequently detached from the XX/Sry seminiferous epithelia and underwent cell death, thereby preventing further progress beyond the elongated spermatid stage. In contrast, immature XY seminiferous tubule segments transplanted under XX/Sry testis capsules clearly displayed proper differentiation into elongated spermatids in the transplanted XY donor tubules. Microarray analysis of seminiferous tubules isolated from XX/Sry testes confirmed missing expression of several Y-linked genes and alterations in the expression profile of genes associated with spermatogenesis. Therefore, our findings indicate dysfunction of the somatic tubule components, probably Sertoli cells, of XX/Sry testes, supporting our hypothesis that Sry alone is insufficient to induce a fully functional Sertoli cell in XX mice. Keywords: comparative genomic hybridization
2007-07-15 | GSE5319 | GEO
Project description:Sry is sufficient to induce testis formation and subsequent male development of internal and external genitalia in chromosomally female mice and humans. In XX sex-reversed males such as XX/Sry-transgenic (XX/Sry) mice, however, testicular germ cells always disappear soon after birth due to germ cell autonomous defects. Therefore, it remains unclear whether or not Sry alone is sufficient to induce a fully functional testicular soma capable of supporting complete spermatogenesis in the XX body. Here we demonstrated that the testicular somatic environment of XX/Sry males is defective in the later phases of spermatogenesis. Spermatogonial transplantation analyses using XX/Sry male mice revealed that donor XY spermatogonia are capable of proliferating, entering meiosis and differentiating into the round spermatid stage. XY donor-derived round spermatids, however, were frequently detached from the XX/Sry seminiferous epithelia and underwent cell death, thereby preventing further progress beyond the elongated spermatid stage. In contrast, immature XY seminiferous tubule segments transplanted under XX/Sry testis capsules clearly displayed proper differentiation into elongated spermatids in the transplanted XY donor tubules. Microarray analysis of seminiferous tubules isolated from XX/Sry testes confirmed missing expression of several Y-linked genes and alterations in the expression profile of genes associated with spermatogenesis. Therefore, our findings indicate dysfunction of the somatic tubule components, probably Sertoli cells, of XX/Sry testes, supporting our hypothesis that Sry alone is insufficient to induce a fully functional Sertoli cell in XX mice. Experiment Overall Design: Whole testes and seminiferous tubules of XX/Sry and W/Wv males were used for microarray expression analysis using the Affymetrix GeneChip system (Affymetrix, CA). In order to isolate the seminiferous tubules, the tunica was carefully removed from the testes which were then incubated in the medium with 5 mg/ml collagnease at 37oC for 40 min. The remaining seminiferous tubules were washed several times with PBS using a 70-ºm cell strainer to remove interstitial cells. After total RNA was extracted using a RNeasy Mini Kit (Qiagen, Germantown, MD), double-stranded cDNA and biotin-labeled cRNA were synthesized using One-Cycle cDNA Synthesis and IVT Labeling kits (Affymetrix, CA), respectively. Twenty micrograms of fragmented biotin-labeled cRNA was hybridized to the Affymetrix Mouse Expression Array MOE 430A for 16 hr at 45oC. The chips were washed, stained, and then scanned with the GeneArray Scanner (Hewlett Packard, CA) in accordance with the manufacturer's standard protocols. Finally, the microarray data were analyzed using Microarray Suite ver. 5.0 (Affymetrix). Differential expression was defined as a difference of 2-fold or more in both whole testis and seminiferous tubule samples between two recipient males. Mouse 430A Affymetrix Genome Array IDs were used to query the NetAffx data mining tool for gene annotations.
2008-06-13 | E-GEOD-5319 | biostudies-arrayexpress
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: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 determining (GSD) genes that initiate fetal ovarian and testicular development and differentiation are expressed in the cells of the urogenital ridge that differentiate as somatic support cells (SSCs), i.e., granulosa cells of the ovary and Sertoli cells of the testis. To identify potential new mammalian GSD genes, we analyzed the gene expression differences between XX and XY SSCs cells isolated from the gonads of embryonic day (E) 13 mouse fetuses carrying an EGFP reporter transgene expressed specifically in SSCs. In addition, genome wide expression differences between XX and XY E13 whole gonads were examined. Newly identified differentially expressed transcripts are potential GSD genes involved in unexplained human sex reversal cases. Keywords: microarray, mouse fetal gonadal somatic support cells, sex determination
2006-05-27 | GSE4928 | GEO
Project description:Newt testis is an appropriate model to isolate germ cells at a specific stage and study the effect of various factors on specific stage of spermatogenesis. Spermatogenesis is an essential process for sexual reproduction in development. It is triggered by the sequential mitotic divisions of spermatogonia, followed by their differentiation into spermatocytes. After two meiotic divisions, spermatocytes develop into spermatids, which possess half the normal complement of genetic material, and then into spermatozoa, mature male gametes in many sexually reproducing organisms. This complex process is controlled by cooperation with several hormones and testicular somatic cells, such as Follicle-stimulating hormone (FSH) and Prolactin (PRL). They are secreted by the pituitary gland and act on testicular somatic cells, mainly Sertoli cells, through the specific receptor. Sertoli cells have essential roles in the regulation of spermatogenesis. They not only represent the only cellular component of the blood–testis barrier but also produce and secrete local factors to germ cells. In this study, Primary Sertoli cells were established from Newt testis, and analyzed their proteome changes during the stimulation of FSH/PRL by 2D-DIGE (IC-Dyes).
2019-12-01 | PXD008342 | JPOST Repository
Project description:This repository contains single-nucleus gene expression profiling from mouse livers of the Four Core Genotypes cross. By crossing mice with both a deletion of the sex-determining factor Sry on the Y-chromosome and a transgenic insertion of Sry on Chromosome 3, four combinations of gonadal (testis or ovaries) and chromosomal (XX or XY) are generated, namely XYSry-Chr3Sry+ (gonadal and chromosomal males), XYSry- (gonadal females, chromosomal males), XX (gonadal and chromosomal females), XXChr3Sry+ (gonadal males, chromosomal females). The transgenes are on a C57BL6 genetic background. From all four genotypes, whole livers were dissected and flash frozen, followed by nuclear extraction and fixation for sci-RNA-seq3.
2024-10-15 | E-MTAB-13700 | biostudies-arrayexpress
Project description:Postnatal human male gonad development and function are known to involve many genes and pathways but our understanding of genome-wide developmental stage-specific and cell type-specific gene expression is far from complete. Integration of testicular and somatic data could elucidate regulatory mechanisms specifically controlling spermatogenesis and may yield insight into certain reproductive pathologies. Please note: AdMinus means that there is no Ad spermatogonia in the corresponding testicular biopsies of cryptorchid children. AdPlus means that Ad spermatogonia are present in the corresponding testicular biopsies of cryptorchid children. JS refers to Johnsen score.
2012-10-28 | E-TABM-1214 | biostudies-arrayexpress
Project description:This repository contains whole genome long read sequencing data generated using Oxford Nanopore Technologies from a mouse of the Four Core Genotypes cross. By crossing mice with both a deletion of the sex-determining factor Sry on the Y-chromosome and a transgenic insertion of Sry on Chromosome 3, four combinations of gonadal (testis or ovaries) and chromosomal (XX or XY) are generated, namely XYSry-Chr3Sry+ (gonadal and chromosomal males), XYSry- (gonadal females, chromosomal males), XX (gonadal and chromosomal females), XXChr3Sry+ (gonadal males, chromosomal females). The transgenes were on a C57BL6 genetic background which is crossed with a CAST/EiJ female to allow for the distinction of the parental haplotypes. DNA sequencing was done on a liver sample of the XYSry+ genotype.
2024-10-14 | E-MTAB-14291 | biostudies-arrayexpress
Project description:This repository contains whole genome sequencing data from mice of the Four Core Genotypes cross. By crossing mice with both a deletion of the sex-determining factor Sry on the Y-chromosome and a transgenic insertion of Sry on Chromosome 3 , four combinations of gonadal (testis or ovaries) and chromosomal (XX or XY) are generated, namely XYSry-Chr3Sry+ (gonadal and chromosomal males), XYSry- (gonadal females, chromosomal males), XX (gonadal and chromosomal females), XXChr3Sry+ (gonadal males, chromosomal females). The transgenes were on a C57BL6 genetic background which is crossed with a CAST/EiJ female to allow for the distinction of the parental haplotypes, or on a pure-bred C57BL6 background. DNA sequencing was done on either liver or ear-punch samples.
2024-10-14 | E-MTAB-13585 | biostudies-arrayexpress