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Single cell RNA sequencing of embryonic day 14.5 testes isolated from wild-type and mutant mice lacking Nr5a1 in Sertoli cells from embryonic day E13.5

ABSTRACT: Single cell RNA sequencing of embryonic day 14.5 testes isolated from wild-type and mutant mice lacking Nr5a1 in Sertoli cells from embryonic day E13.5

PROVIDER: PRJNA907833 | ENA |

REPOSITORIES: ENA

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Single cell RNA sequencing of embryonic day 14.5 testes isolated from wild-type and mutant mice lacking Nr5a1 in Sertoli cells from embryonic day E13.5

Project description:To investigate the role of the nuclear receptor NR5A1 in testis after sex determination, we have analyzed mice lacking NR5A1 in Sertoli cells (SC) from embryonic day (E) 13.5 onwards. Ablation of Nr5a1 impairs the expression of genes characteristic of the SC identity (e.g., Sox9, Amh), causes SC death from E14.5 through a Trp53-independent mechanism related to anoikis, and induces disorganization of the testis cords. Together, these effects cause germ cells to enter meiosis and die. Single-cell RNA-sequencing experiments revealed that NR5A1-deficient SC change their molecular identity: some acquire a “pre-granulosa-like” identity, while other revert to a “supporting progenitor-like” cell identity, most of them being “intersex” because they express both testicular and ovarian genes. Fetal Leydig cells (LC) do not display significant changes, indicating that SC are not required beyond E14.5 for their emergence or maintenance. In contrast, adult LC were absent from the postnatal testes. In addition, adult mutant males display persistence of Müllerian duct derivatives, decreased anogenital distance and reduced penis length, which can be explained by the loss of AMH and testosterone synthesis due to SC failure.

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RNA-seq of mouse barrelette neurons at embryonic day 14.5

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Single-cell analysis RNA sequencing of whole mouse skin at embryonic day 13.5 and 14.5

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Gestational high salt stressed Embryonic Day 14.5 BdkrB2 Null Mouse Kidney vs. BdkrB2 Wild Type Mouse Kidney

Project description:Transcriptional profiling of Embryonic Day 14.5 mouse kidneys comparing the infuence of gestational high salt stress on gene expression remolding of BdkrB2 receptor null mice with that of BdkrB2 receptor wild type mice. The BdkrB2 receptor has been shown to be playing a role in renal vascular tone, kidney secretion and reabsorption function, normal kidney development, while impaired BdkrB2 receptor in kidney shown being associated with renal agenesis and renal dysplasia. Goal was to determine the effects of BdkrB2 receptor knockout together with gestational high salt stress on renal gene expression pattern.

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Whole kidneys at embryonic day 14.5: wildtype (WT) versus Hoxb7Cre transgene mediated conditional Mdm4 knockout kidneys

Project description:Whole kidneys at embryonic day 14.5: wildtype (WT) versus Hoxb7Cre transgene mediated conditional Mdm4 knockout kidneys

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Induction of Sertoli-like cells from human fibroblasts by NR5A1 and GATA4

Project description:Sertoli cells are essential nurse cells in the testis that regulate the process of spermatogenesis and establish the immune-privileged environment of the blood-testis-barrier (BTB). The induction of human Sertoli cells from fibroblasts could provide cellular sources for fertility and transplantation treatments. Here, we report the in vitro reprogramming of human fibroblasts to Sertoli cells and characterize these human induced Sertoli-like cells (hiSCs). Initially, five transcriptional factors (NR5A1, GATA4, WT1, SOX9 and DMRT1) and a gene reporter carrying the AMH promoter were utilized to obtain the hiSCs. We further reduce the number of reprogramming factors to two, i.e., NR5A1 and GATA4, and show that these hiSCs have transcriptome profiles that are similar to those of primary human Sertoli cells. Consistent with the known cellular properties of Sertoli cells, hiSCs attract endothelial cells and exhibit high number of lipid droplets in the cytoplasm. More importantly, hiSCs can sustain the viability of spermatogonia cells harvested from mouse seminiferous tubules. In addition, hiSCs suppress the production of IL-2 and proliferation of human T lymphocytes. When hiSCs were cotransplanted with human embryonic kidney cells, these xenotransplanted human cells survived longer in mice with normal immune systems. hiSCs also allow us to determine a gene associated with Sertoli-only syndrome (SCO), CX43, is indeed important in regulating the maturation of Sertoli cells.

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Gestational high salt stressed Embryonic Day 14.5 BdkrB2 Null Mouse Kidney vs. BdkrB2 Wild Type Mouse Kidney

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Single cell sequencing of dissected mouse mandibular prominence at embryonic day e11.5 and e13.5

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Transcription profiling of mouse pancreatic islets on day 14.5 of pregnancy

Project description:The inability of the beta-cell to meet the demand for insulin brought about by insulin resistance leads to type 2 diabetes. In adults, beta-cell replication is one of the mechanisms thought to cause the expansion of beta-cell mass. Efforts to treat diabetes require knowledge of the pathways that drive facultative beta-cell proliferation in vivo. A robust physiological stimulus of beta-cell expansion is pregnancy, and identifying the mechanisms underlying this stimulus may provide therapeutic leads for the treatment of type 2 diabetes. The peak in beta-cell proliferation during pregnancy occurs on day 14.5 of gestation in mice. Using advanced genomic approaches, we globally characterize the gene expression signature of pancreatic islets on day 14.5 of gestation during pregnancy. We identify a total of 1,907 genes as differentially expressed in the islet during pregnancy. We demonstrate that the islet's ability to compensate for relative insulin deficiency during metabolic stress is associated with the induction of both proliferative and survival pathways. A comparison of the genes induced in three different models of islet expansion suggests that diverse mechanisms can be recruited to expand islet mass. The identification of many novel genes involved in islet expansion during pregnancy provides an important resource for diabetes researchers to further investigate how these factors contribute to the maintenance of not only islet mass, but ultimately beta-cell mass.

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