Project description:We report the H3K9me2 distribution profile with ChIP sequencing of postnatal male germ cells. Histone modification levels are dynamically controlled during mammalian spermatogenesis. We found that H3K9 demethylases, Jmjd1a and Jmjd1b catalyze H3K9 demethylation in prospermatogonia. Combined loss of Jmjd1 enzymes disturbed prospermatogonia to spermatogonia transition in mice. To examine a role of Jmjd1 in prospermatogonia to spermatogonia transition, we performed RNA-seq and ChIP-seq analyses using postnatal germ cells at P3 and P7.
Project description:We report the whole-transcriptome profile with total RNA sequencing of postnatal male germ cells. Histone modification levels are dynamically controlled during mammalian spermatogenesis. We found that H3K9 demethylases, Jmjd1a and Jmjd1b catalyze H3K9 demethylation in prospermatogonia. Combined loss of Jmjd1 enzymes disturbed prospermatogonia to spermatogonia transition in mice. To examine a role of Jmjd1 in prospermatogonia to spermatogonia transition, we performed RNA-seq and ChIP-seq analyses using postnatal germ cells at P3 and P7.
Project description:The dataset contains the methylome EM-sequencing raw data (fastq) of different spermatogenic cells from 5 human males (three controls and two crypotzoospermic). The datasets correspond to the following cell types: undifferentiated spermatogonia, differentiating spermatogonia, 4C spermatocytes, and 1C spermatids (this cell type only for the control individuals)
Project description:Spermatogonial differentiation is a developmental process that is essential for spermatogenesis, but the molecular and cellular changes that germ cells must undergo to transition from undifferentiated spermatogonia to differentiating spermatogonia remain largely undefined. Retinoic acid (RA) is necessary and sufficient for spermatogonial differentiation. Using the postnatal mouse testis, we examine the transcriptome changes that accompany spermatogonial differentiation. Spermatogenesis was synchronized by administration of potent and selective RA synthesis inhibitor; as a result, testes contained only undifferentiated spermatogonia. Then, the inhibitor was discontinued, and mice were given a single dose of exogenous RA to initiate spermatogonial differentiation. We measured transcriptomes in FACS-enriched germ cells either before RA administration, when the cells correspond to Aal spermatogonia (and a minor contribution of spermatogonial stem cells) or at two points after RA administration, when the cells correspond to A1 or A3 differentiating spermatogonia. The results of this study reveal the full transcriptome changes accompanying spermatogonial differentiation in the mouse.
Project description:Microarray analysis was performed in order to detail the gene expression profiles in murine b-2M-SPa-6+c-kit-undifferentiated and b-2M-SPa-6+c-kit+ differentiating spermatogonia. These data were used to compare human and mouse transcriptomes of undifferentiated spermatogonia.
Project description:Using conditional knockout mice model, here we report the essential role of DIS3L2 in regulating male germline proliferation, growth and differentiation to ensure male fertility. We document that DIS3L2 is essential for spermatogonial homeostasis. DIS3L2-specific deletion in spermatogonia results in the reduction of the undifferentiated spermatogonial population and the block in transition to the differentiating stage in postnatal testes.
