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Changes of H3K9ac and H3K27ac recruitment and gene expression in pachytene spermatocytes and round spermatids depleted of HDAC3

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Mus musculus

PROVIDER: GSE153065 | GEO | 2021/05/26

REPOSITORIES: GEO

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Gene expression in pachytene spermatocytes and round spermatids depleted of HDAC3

Project description:This study aims to explore the transcriptomic changes in Stra8-cre/Hdac3fl/- mice at meiotic and postmeiotic stages. Pachytene spermatocytes and round spermatids were isolated from testes of Hdac3fl/+ and Stra8-cre/Hdac3fl/- mice at 7-8 week-old through STA-PUT method. Cells from 6 WT mice or 10 Stra8-cre/Hdac3fl/- mice were pooled for one biological replicate. RNA-seq libraries were prepared in biological triplicates.

2021-05-26 | GSE153064 | GEO

Changes of H3K9ac and H3K27ac recruitment and gene expression in pachytene spermatocytes and round spermatids depleted of HDAC3

Project description:Changes of H3K9ac and H3K27ac recruitment and gene expression in pachytene spermatocytes and round spermatids depleted of HDAC3

| PRJNA641344 | ENA

Heat stress induced piRNA alterations in pachytene spermatocytes and round spermatids.

Project description:BackgroundSpermatogenesis is a temperature-sensitive process, and elevation in temperature hampers this process quickly and significantly. We studied the molecular effects of testicular heating on piRNAs and gene expression in rat testicular germ cells.MethodsWe generated a cryptorchid rat model by displacing the testis from the scrotal sac (34 °C) to the abdominal area (37 °C) and sacrificed animals after 1 day, 3 days, and 5 days. Pachytene spermatocytes and round spermatids were purified using elutriation centrifugation and percoll gradient methods. We performed transcriptome sequencing in pachytene spermatocytes and round spermatids to identify differentially expressed piRNAs and their probable targets, i.e., TE transcripts and mRNAs.ResultsAs a result of heat stress, we observed significant upregulation of piRNAs and TE transcripts in testicular germ cells. In addition to this, piRNA biogenesis machinery and heat shock proteins (Hsp70 and Hsp90 family members) were upregulated. mRNAs have also been proposed as targets for piRNAs; therefore, we shortlisted certain piRNA-mRNA pairs with an inverse relationship of expression. We observed that in testicular heat stress, the heat shock proteins go hand-in-hand with the upregulation of piRNA biogenesis machinery. The dysregulation of piRNAs in heat-stressed germ cells, increased ping-pong activity, and disturbed expression of piRNA target transcripts suggest a connection between piRNAs, mRNAs, and TE transcripts.ConclusionsIn heat stress, piRNAs, piRNA machinery, and heat shock proteins are activated to deal with low levels of stress, which is followed by a rescue approach in prolonged stressaccompained by high TE activity to allow genetic mutations, perhaps for survival and adaptability.

| S-EPMC11267754 | biostudies-literature

Changes of H3K9ac and H3K27ac recruitment in pachytene spermatocytes and round spermatids from testes-specific HDAC3-depleted mice and genome-wide maps of HDAC3,NCOR and Sox30 in wild-type and Sox30 KO testes

Project description:We reported changes in the recruitment of H3K9ac and H3K27ac in HDAC3-depleted mouse testes in the late meiotic and early haploid stages. We also investigated genome-wide occupancy of HDAC3, NCOR and Sox30 to the mouse testes from wild-type and Sox30 KO mice.

2021-05-26 | GSE153063 | GEO

Round Spermatids and Pachytene Spermatocytes

Project description:Mouse Round Spermatids (Sptd) and Pachytene Spermatocytes (Spcy) Keywords: repeat sample

2005-03-15 | GSE1768 | GEO

Round Spermatids and Pachytene Spermatocytes

Project description:Mouse Round Spermatids (Sptd) and Pachytene Spermatocytes (Spcy)

2010-06-10 | E-GEOD-1768 | biostudies-arrayexpress

Comprehensive Analysis of the Transcriptome-Wide m6A Methylation in Mouse Pachytene Spermatocytes and Round Spermatids.

Project description:Spermatogenesis, an efficient and complex system in male germline development, requires a series of elaborately regulated genetic events in which diploid spermatogonia differentiate into haploid spermatozoa. N6-methyladenosine (m6A) is an important epigenetic RNA modification that occurs during spermatogenesis. ALKBH5 is an m6A eraser and knocking out Alkbh5 increases the level of total m6A methylation and causes male infertility. In this study, comprehensive analyses of MeRIP-seq and RNA-seq data revealed differences between wild-type (WT) and Alkbh5 knockout (KO) mice. In pachytene spermatocytes (PA), 8,151 m6A peaks associated with 9,959 genes were tested from WT and 10,856 m6A peaks associated with 10,016 genes were tested from KO mice. In the round spermatids (RO), 10,271 m6A peaks associated with 10,109 genes were tested from WT mice and 9,559 m6A peaks associated with 10,138 genes were tested from KO mice. The peaks were mainly concentrated in the coding region and the stop codon of the GGAC motif. In addition, enrichment analysis showed significant m6A methylation genes in related pathways in spermatogenesis. Furthermore, we conducted joint analyses of the m6A methylome and RNA transcription, suggesting an m6A regulatory mechanism of gene expression. Finally, seven differentially expressed mRNAs from RNA-seq data in both PA and RO were verified using qPCR. Overall, our study provides new information on m6A modification changes between WT and KO in PA and RO, and may provide new insights into the molecular mechanisms of m6A modification in germ cell development and spermatogenesis.

| S-EPMC8968445 | biostudies-literature

Gene expression in pachytene spermatocytes and round spermatids depleted of HDAC3

Project description:Gene expression in pachytene spermatocytes and round spermatids depleted of HDAC3

| PRJNA641378 | ENA

Corrigendum: Comprehensive analysis of the transcriptome-wide m6A methylation in mouse pachytene spermatocytes and round spermatids.

Project description:[This corrects the article DOI: 10.3389/fgene.2022.832677.].

| S-EPMC9421247 | biostudies-literature

Effects of Fatty Acids on Intracellular [Ca2+], Mitochondrial Uncoupling and Apoptosis in Rat Pachytene Spermatocytes and Round Spermatids.

Project description:The aim of this work was to explore the ability of free arachidonic acid, palmitic acid and the unsaturated fatty acids oleic acid and docosahexaenoic acid to modify calcium homeostasis and mitochondrial function in rat pachytene spermatocytes and round spermatids. In contrast to palmitic acid, unsaturated fatty acids produced significant increases in intracellular calcium concentrations ([Ca2+]i) in both cell types. Increases were fatty acid specific, dose-dependent and different for each cell type. The arachidonic acid effects on [Ca2+]i were higher in spermatids than in spermatocytes and persisted when residual extracellular Ca2+ was chelated by EGTA, indicating that the increase in [Ca2+]i originated from release of intracellular calcium stores. At the concentrations required for these increases, unsaturated fatty acids produced no significant changes in the plasma membrane potential of or non-specific permeability in spermatogenic cells. For the case of arachidonic acid, the [Ca2+]i increases were not caused by its metabolic conversion to eicosanoids or anandamide; thus we attribute this effect to the fatty acid itself. As estimated with fluorescent probes, unsaturated fatty acids did not affect the intracellular pH but were able to induce a progressive decrease in the mitochondrial membrane potential. The association of this decrease with reduced reactive oxygen species (ROS) production strongly suggests that unsaturated fatty acids induced mitochondrial uncoupling. This effect was stronger in spermatids than in spermatocytes. As a late event, arachidonic acid induced caspase 3 activation in a dose-dependent manner both in the absence and presence of external Ca2+. The concurrent but differential effects of unsaturated fatty acids on [Ca2+]i and mitochondrial functions are additional manifestations of the metabolic changes that germ cells undergo during their differentiation.

| S-EPMC4948913 | biostudies-literature

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