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Transcription factor NFYA directs male meiotic entry by facilitating accessible chromatin at meiotic promoters in mice

ABSTRACT: Transcription factor NFYA directs male meiotic entry by facilitating accessible chromatin at meiotic promoters in mice

PROVIDER: PRJNA1257271 | ENA |

REPOSITORIES: ENA

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Transcription factor NFYA directs male meiotic entry by facilitating accessible chromatin at the promoters of genes expressed during meiosis [CUT&RUN]

Project description:Meiotic prophase I characterized by homologous recombination and synapsis is an intricate step for spermatogenesis. This process entails extensive changes to chromatin and transcription. Recent studies have revealed that prior to prophase I, accessible chromatin bound by paused Pol II at meiotic gene promoters is essential for their timely activation during later stages of prophase I. However, the factor responsible for promoting accessible chromatin at meiotic gene promoters before entry into prophase I is unknown. Here, we discovered that NFYA expressed in pre-meiotic germ cells promotes accessible chromatin at meiotic gene promoters. Concordantly, conditional germline deletion of Nfya in male mice blocks meiotic entry. Functionally, our spatial and single-cell ATAC-seq data revealed that loss of NFYA in pre-meiotic cells disrupts accessible chromatin at meiotic gene promoters. Our study identifies a pioneer role for NFYA in facilitating permissive chromatin at meiotic gene promoters before meiosis, thereby controlling the timely activation of meiotic genetic program during later meiosis.

2025-05-10 | GSE295964 | GEO

Transcription factor NFYA directs male meiotic entry by facilitating accessible chromatin at the promoters of genes expressed during meiosis [ATAC-seq]

2025-05-10 | GSE295941 | GEO

Transcription factor NFYA directs male meiotic entry by facilitating accessible chromatin at the promoters of genes expressed during meiosis [scRNA-seq & scATAC-seq]

2025-05-10 | GSE296438 | GEO

Transcription factor NFYA directs male meiotic entry by facilitating accessible chromatin at the promoters of genes expressed during meiosis [ATAC-seq]

Project description:Transcription factor NFYA directs male meiotic entry by facilitating accessible chromatin at the promoters of genes expressed during meiosis [ATAC-seq]

| PRJNA1256837 | ENA

Transcription factor NFYA directs male meiotic entry by facilitating accessible chromatin at the promoters of genes expressed during meiosis [CUT&RUN]

Project description:Transcription factor NFYA directs male meiotic entry by facilitating accessible chromatin at the promoters of genes expressed during meiosis [CUT&RUN]

| PRJNA1256871 | ENA

Transcription factor NFYA directs male meiotic entry by facilitating accessible chromatin at meiotic promoters in mice

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

2025-05-10 | GSE295991 | GEO

Single-cell staging of meiotic entry identifies a sequential order in meiotic sex chromosome activation

Project description:The switch from mitosis to meiosis is a major transition that takes place during germ cell development. The precise sequence and the different gene expression programs activated during this process are only partly known. Here, we applied single-cell mRNA sequencing to interrogate the transcriptional changes that occur during the early steps of male germ cell differentiation. We isolated single cells from testes using a Dazl-GFP reporter mouse, which allowed us to focus on germ cells undergoing the mitotic to meiotic transition. We identified 4 distinct meiotic stages with unique transcriptome profiles and reconstructed the timeline of the meiotic entry in silico, from spermatogonia up to the pachytene stage, identifying transcriptional changes with an unprecedented resolution. This allowed us to characterize 3 major transitions in the meiotic prophase 1 of the male germline: meiotic entry, the meiotic sex chromosome inactivation (MSCI), and concomitant pachytene transcriptional activation. Meiotic entry is initiated following the downregulation of a tightly connected set of pluripotency factors and accompanied by a global transcriptional silencing. In contrast, during subsequent sex chromosome inactivation at the zygotene stage, gene silencing proceeds in a defined order, related to gene function.

2021-05-22 | GSE114788 | GEO

Project description:Transcription factor NFYA directs male meiotic entry by facilitating accessible chromatin at the promoters of genes expressed during meiosis

| PRJNA1254472 | ENA

MAX controls meiotic entry in sexually undifferentiated germ cells

Project description:MAX controls meiotic entry in sexually undifferentiated germ cells

| PRJNA1022400 | ENA

Maintenance DNA methylation in pre-meiotic germ cells regulates meiotic prophase by facilitating homologous chromosome pairing

Project description:During spermatogenesis, mammalian spermatogonia undergo mitotic division, to maintain stem cell pool via self-renewal and generate differentiating progenitor cells for entry into meiotic prophase. During the perinatal stage, de novo DNA methylation occurring in pro-spermatogonia plays a key role to complete meiotic prophase and initiate meiotic division. In contrast, the role of the maintenance DNA methylation pathway for regulation of meiotic prophase, or meiotic division, in the adult is not well understood. Here, by using conditional mutants for Np95 (nuclear protein 95 kDa, also known as Uhrf1) or Dnmt1 [DNA (cytosine-5)-methyltransferase 1], two proteins that are essential for maintenance DNA methylation, we reveal that both NP95 and DNMT1 are co-expressed in spermatogonia and that these factors are necessary for meiosis in male germ cells. We found that Np95- or Dnmt1-deficient spermatocytes exhibited spermatogenic defects involving synaptic failure during meiotic prophase. In addition, assembly of pericentric heterochromatin clusters in early meiotic prophase, a phenomenon that is required for subsequent pairing of homologous chromosomes, is disrupted in Np95-deficient as well as Dnmt1-deficient spermatocytes. Based on these observations, we propose that DNA methylation established in pre-meiotic spermatogonia regulates synapsis of homologous chromosomes, and in turn quality control of male germ cells. Maintenance DNA methylation, therefore, plays a role to ensure faithful transmission of both genetic and epigenetic information to offspring.

2021-03-24 | GSE169482 | GEO

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