Retinoic acid-induced differentiation of porcine spermatogonia in vitro
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PROVIDER: PRJNA906611 | ENA |
REPOSITORIES: ENA
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Project description:Spermatogenesis is an intricate developmental process occurring in testes by which spermatogonial stem cells (SSCs) self-renew and differentiate into mature sperm. The molecular mechanisms for SSC self-renewal and differentiation, while have been well studied in mice, may differ between mice and domestic animals including pigs. To gain knowledge about the molecular mechanisms for porcine SSC self-renewal and differentiation that have to date been poorly understood, here we isolated and enriched primitive spermatogonia from neonatal porcine testes, and exposed the cells to retinoic acid, a direct inducer for spermatogonial differentiation. We then identified that retinoic acid could induce porcine primitive spermatogonial differentiation into leptotene spermatocyte-like cells, which was accompanied by a clear transcriptomic alteration, as revealed by the RNA-sequencing analysis. We also compared retinoic acid-induced in vitro porcine spermatogonial differentiation with the in vivo process, and compared retinoic acid-induced in vitro spermatogonial differentiation between pigs and mice. Furthermore, we analyzed retinoic acid-induced differentially expressed long non-coding RNAs (lncRNAs), and demonstrated that a pig-specific lncRNA, lncRNA-106504875, positively regulated porcine spermatogonial proliferation by targeting the core transcription factor ZBTB16. Taken together, these results would help to elucidate the roles of retinoic acid in porcine spermatogonial differentiation, thereby contributing to further knowledge about the molecular mechanisms underlying porcine SSC development and, in the long run, to optimization of both long-term culture and induced differentiation systems for porcine SSCs.
2023-01-09 | GSE219031 | GEO
Project description:Total RNA from in vitro cultured murine undifferentiated and differentiating spermatogonia (by retinoic acid induction) were collected for RNA-seq
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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.
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Project description:Analysis of gene expression and alternate splicing effects of retinoic acid treatment on gestational day 15 rat fetal testes in whole testis culture Retinoic acid exposure in cultured fetal testis has previously been demonstrated to have significant effects on the histology of the fetal testis in multiple species, as well as to alter the meiotic states of germ cells. However, previous experiments have not analyzed the mechanisms by which retinoic acid exposure leads to altered tubulogenesis and loss of seminiferous cord structure. This experiment demonstrated that retinoic acid exposure activated signaling pathways that promote the ovary development program and oppose normal testis development in mid-gestational rat fetal testes.
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Project description:We are presenting the application of toxicogenomics in the evaluation of the toxic effects of retinoic acid and one of its isoforms the 9-cis retinoic acid. The main goal is to distinguish the pattern of action of the both chemical compounds and their action in an extended exposure. The results suggest a different pattern within the days and the chemicals. Representatives of each GO functional groups were selected and quantified by real-time PCR to validate the microarray data and to differentiate the action of retinoic acid compounds studied.
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Project description:wide genome analysis of difference in gene expression induced by treatment with kit ligand (KL), or bone mprphogenetic protein 4 (BMP4), or all-trans retinoic acid in spermatogonia from 7-day-old mice, using Mouse Genome 430 2.0 Array from Affymetrix, representing approximately 45000 mouse known genes or EST sequences, spanning the whole mouse genome.
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Project description:Retinoic acid (RA) induces spermatogonial differentiation, but the mechanism by which it operates remains largely unknown. We developed a germ cell culture assay system to study genes involved in spermatogonial differentiation triggered by RA. Stimulated by Retinoic Acid 8 (Stra8), an RA-inducible gene, is indispensable for meiosis initiation, and its deletion results in a complete block of spermatogenesis at the pre-leptotene/zygotene stage due to failure to complete pre-meiotic DNA replication. To interrogate the role of Stra8 in RA mediated differentiation of spermatogonia, we derived germ cell cultures from the neonatal testis of both wild type and Stra8 knock-out mice. We provide the first evidence that Stra8 plays a crucial role in modulating the responsiveness of undifferentiated spermatogonia to RA and facilitates transition to a differentiated state. Stra8-mediated differentiation is achieved through downregulation of a large portfolio of genes and pathways, most notably including genes involved in the spermatogonial stem cell self-renewal process. We also report here for the first time the role of Transcription Elongation Regulator-1 Like (Tcerg1l) as a downstream effector of RA-induced spermatogonial differentiation.
2021-05-05 | GSE173873 | GEO